Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)
Bug: 166295507
Merged-In: I70ea776b8589ac3a7982c710c5c8b2941d86e55b
Change-Id: Ic1d535e9d2d6f80d95215240dbdb024995b045f8
diff --git a/libs/renderengine/gl/GLESRenderEngine.cpp b/libs/renderengine/gl/GLESRenderEngine.cpp
index 056df5e..2139acb 100644
--- a/libs/renderengine/gl/GLESRenderEngine.cpp
+++ b/libs/renderengine/gl/GLESRenderEngine.cpp
@@ -46,8 +46,10 @@
#include "GLExtensions.h"
#include "GLFramebuffer.h"
#include "GLImage.h"
+#include "GLShadowVertexGenerator.h"
#include "Program.h"
#include "ProgramCache.h"
+#include "filters/BlurFilter.h"
extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
@@ -145,52 +147,6 @@
return NAME_NOT_FOUND;
}
-class EGLAttributeVector {
- struct Attribute;
- class Adder;
- friend class Adder;
- KeyedVector<Attribute, EGLint> mList;
- struct Attribute {
- Attribute() : v(0){};
- explicit Attribute(EGLint v) : v(v) {}
- EGLint v;
- bool operator<(const Attribute& other) const {
- // this places EGL_NONE at the end
- EGLint lhs(v);
- EGLint rhs(other.v);
- if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
- if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
- return lhs < rhs;
- }
- };
- class Adder {
- friend class EGLAttributeVector;
- EGLAttributeVector& v;
- EGLint attribute;
- Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
-
- public:
- void operator=(EGLint value) {
- if (attribute != EGL_NONE) {
- v.mList.add(Attribute(attribute), value);
- }
- }
- operator EGLint() const { return v.mList[attribute]; }
- };
-
-public:
- EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
- void remove(EGLint attribute) {
- if (attribute != EGL_NONE) {
- mList.removeItem(Attribute(attribute));
- }
- }
- Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
- EGLint operator[](EGLint attribute) const { return mList[attribute]; }
- // cast-operator to (EGLint const*)
- operator EGLint const*() const { return &mList.keyAt(0).v; }
-};
-
static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
EGLConfig* config) {
// select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
@@ -199,16 +155,33 @@
EGLint wantedAttribute;
EGLint wantedAttributeValue;
- EGLAttributeVector attribs;
+ std::vector<EGLint> attribs;
if (renderableType) {
- attribs[EGL_RENDERABLE_TYPE] = renderableType;
- attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
- attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
- attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
- attribs[EGL_RED_SIZE] = 8;
- attribs[EGL_GREEN_SIZE] = 8;
- attribs[EGL_BLUE_SIZE] = 8;
- attribs[EGL_ALPHA_SIZE] = 8;
+ const ui::PixelFormat pixelFormat = static_cast<ui::PixelFormat>(format);
+ const bool is1010102 = pixelFormat == ui::PixelFormat::RGBA_1010102;
+
+ // Default to 8 bits per channel.
+ const EGLint tmpAttribs[] = {
+ EGL_RENDERABLE_TYPE,
+ renderableType,
+ EGL_RECORDABLE_ANDROID,
+ EGL_TRUE,
+ EGL_SURFACE_TYPE,
+ EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
+ EGL_FRAMEBUFFER_TARGET_ANDROID,
+ EGL_TRUE,
+ EGL_RED_SIZE,
+ is1010102 ? 10 : 8,
+ EGL_GREEN_SIZE,
+ is1010102 ? 10 : 8,
+ EGL_BLUE_SIZE,
+ is1010102 ? 10 : 8,
+ EGL_ALPHA_SIZE,
+ is1010102 ? 2 : 8,
+ EGL_NONE,
+ };
+ std::copy(tmpAttribs, tmpAttribs + (sizeof(tmpAttribs) / sizeof(EGLint)),
+ std::back_inserter(attribs));
wantedAttribute = EGL_NONE;
wantedAttributeValue = EGL_NONE;
} else {
@@ -217,7 +190,8 @@
wantedAttributeValue = format;
}
- err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
+ err = selectConfigForAttribute(display, attribs.data(), wantedAttribute, wantedAttributeValue,
+ config);
if (err == NO_ERROR) {
EGLint caveat;
if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
@@ -227,30 +201,39 @@
return err;
}
-std::unique_ptr<GLESRenderEngine> GLESRenderEngine::create(int hwcFormat, uint32_t featureFlags,
- uint32_t imageCacheSize) {
+std::unique_ptr<GLESRenderEngine> GLESRenderEngine::create(const RenderEngineCreationArgs& args) {
// initialize EGL for the default display
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (!eglInitialize(display, nullptr, nullptr)) {
LOG_ALWAYS_FATAL("failed to initialize EGL");
}
+ const auto eglVersion = eglQueryStringImplementationANDROID(display, EGL_VERSION);
+ if (!eglVersion) {
+ checkGlError(__FUNCTION__, __LINE__);
+ LOG_ALWAYS_FATAL("eglQueryStringImplementationANDROID(EGL_VERSION) failed");
+ }
+
+ const auto eglExtensions = eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS);
+ if (!eglExtensions) {
+ checkGlError(__FUNCTION__, __LINE__);
+ LOG_ALWAYS_FATAL("eglQueryStringImplementationANDROID(EGL_EXTENSIONS) failed");
+ }
+
GLExtensions& extensions = GLExtensions::getInstance();
- extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
- eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
+ extensions.initWithEGLStrings(eglVersion, eglExtensions);
// The code assumes that ES2 or later is available if this extension is
// supported.
EGLConfig config = EGL_NO_CONFIG;
if (!extensions.hasNoConfigContext()) {
- config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+ config = chooseEglConfig(display, args.pixelFormat, /*logConfig*/ true);
}
- bool useContextPriority = extensions.hasContextPriority() &&
- (featureFlags & RenderEngine::USE_HIGH_PRIORITY_CONTEXT);
+ bool useContextPriority =
+ extensions.hasContextPriority() && args.contextPriority == ContextPriority::HIGH;
EGLContext protectedContext = EGL_NO_CONTEXT;
- if ((featureFlags & RenderEngine::ENABLE_PROTECTED_CONTEXT) &&
- extensions.hasProtectedContent()) {
+ if (args.enableProtectedContext && extensions.hasProtectedContent()) {
protectedContext = createEglContext(display, config, nullptr, useContextPriority,
Protection::PROTECTED);
ALOGE_IF(protectedContext == EGL_NO_CONTEXT, "Can't create protected context");
@@ -262,26 +245,30 @@
// if can't create a GL context, we can only abort.
LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
- EGLSurface dummy = EGL_NO_SURFACE;
+ EGLSurface stub = EGL_NO_SURFACE;
if (!extensions.hasSurfacelessContext()) {
- dummy = createDummyEglPbufferSurface(display, config, hwcFormat, Protection::UNPROTECTED);
- LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
+ stub = createStubEglPbufferSurface(display, config, args.pixelFormat,
+ Protection::UNPROTECTED);
+ LOG_ALWAYS_FATAL_IF(stub == EGL_NO_SURFACE, "can't create stub pbuffer");
}
- EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
- LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
+ EGLBoolean success = eglMakeCurrent(display, stub, stub, ctxt);
+ LOG_ALWAYS_FATAL_IF(!success, "can't make stub pbuffer current");
extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
- EGLSurface protectedDummy = EGL_NO_SURFACE;
+ EGLSurface protectedStub = EGL_NO_SURFACE;
if (protectedContext != EGL_NO_CONTEXT && !extensions.hasSurfacelessContext()) {
- protectedDummy =
- createDummyEglPbufferSurface(display, config, hwcFormat, Protection::PROTECTED);
- ALOGE_IF(protectedDummy == EGL_NO_SURFACE, "can't create protected dummy pbuffer");
+ protectedStub = createStubEglPbufferSurface(display, config, args.pixelFormat,
+ Protection::PROTECTED);
+ ALOGE_IF(protectedStub == EGL_NO_SURFACE, "can't create protected stub pbuffer");
}
// now figure out what version of GL did we actually get
GlesVersion version = parseGlesVersion(extensions.getVersion());
+ LOG_ALWAYS_FATAL_IF(args.supportsBackgroundBlur && version < GLES_VERSION_3_0,
+ "Blurs require OpenGL ES 3.0. Please unset ro.surface_flinger.supports_background_blur");
+
// initialize the renderer while GL is current
std::unique_ptr<GLESRenderEngine> engine;
switch (version) {
@@ -291,9 +278,8 @@
break;
case GLES_VERSION_2_0:
case GLES_VERSION_3_0:
- engine = std::make_unique<GLESRenderEngine>(featureFlags, display, config, ctxt, dummy,
- protectedContext, protectedDummy,
- imageCacheSize);
+ engine = std::make_unique<GLESRenderEngine>(args, display, config, ctxt, stub,
+ protectedContext, protectedStub);
break;
}
@@ -347,20 +333,20 @@
return config;
}
-GLESRenderEngine::GLESRenderEngine(uint32_t featureFlags, EGLDisplay display, EGLConfig config,
- EGLContext ctxt, EGLSurface dummy, EGLContext protectedContext,
- EGLSurface protectedDummy, uint32_t imageCacheSize)
- : renderengine::impl::RenderEngine(featureFlags),
+GLESRenderEngine::GLESRenderEngine(const RenderEngineCreationArgs& args, EGLDisplay display,
+ EGLConfig config, EGLContext ctxt, EGLSurface stub,
+ EGLContext protectedContext, EGLSurface protectedStub)
+ : renderengine::impl::RenderEngine(args),
mEGLDisplay(display),
mEGLConfig(config),
mEGLContext(ctxt),
- mDummySurface(dummy),
+ mStubSurface(stub),
mProtectedEGLContext(protectedContext),
- mProtectedDummySurface(protectedDummy),
+ mProtectedStubSurface(protectedStub),
mVpWidth(0),
mVpHeight(0),
- mFramebufferImageCacheSize(imageCacheSize),
- mUseColorManagement(featureFlags & USE_COLOR_MANAGEMENT) {
+ mFramebufferImageCacheSize(args.imageCacheSize),
+ mUseColorManagement(args.useColorManagement) {
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
@@ -369,24 +355,15 @@
// Initialize protected EGL Context.
if (mProtectedEGLContext != EGL_NO_CONTEXT) {
- EGLBoolean success = eglMakeCurrent(display, mProtectedDummySurface, mProtectedDummySurface,
+ EGLBoolean success = eglMakeCurrent(display, mProtectedStubSurface, mProtectedStubSurface,
mProtectedEGLContext);
ALOGE_IF(!success, "can't make protected context current");
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_PACK_ALIGNMENT, 4);
- success = eglMakeCurrent(display, mDummySurface, mDummySurface, mEGLContext);
+ success = eglMakeCurrent(display, mStubSurface, mStubSurface, mEGLContext);
LOG_ALWAYS_FATAL_IF(!success, "can't make default context current");
}
- const uint16_t protTexData[] = {0};
- glGenTextures(1, &mProtectedTexName);
- glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 1, 1, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, protTexData);
-
// mColorBlindnessCorrection = M;
if (mUseColorManagement) {
@@ -423,6 +400,12 @@
mTraceGpuCompletion = true;
mFlushTracer = std::make_unique<FlushTracer>(this);
}
+
+ if (args.supportsBackgroundBlur) {
+ mBlurFilter = new BlurFilter(*this);
+ checkErrors("BlurFilter creation");
+ }
+
mImageManager = std::make_unique<ImageManager>(this);
mImageManager->initThread();
mDrawingBuffer = createFramebuffer();
@@ -459,11 +442,8 @@
void GLESRenderEngine::primeCache() const {
ProgramCache::getInstance().primeCache(mInProtectedContext ? mProtectedEGLContext : mEGLContext,
- mFeatureFlags & USE_COLOR_MANAGEMENT);
-}
-
-bool GLESRenderEngine::isCurrent() const {
- return mEGLDisplay == eglGetCurrentDisplay() && mEGLContext == eglGetCurrentContext();
+ mArgs.useColorManagement,
+ mArgs.precacheToneMapperShaderOnly);
}
base::unique_fd GLESRenderEngine::flush() {
@@ -572,7 +552,10 @@
float alpha) {
size_t c;
Rect const* r = region.getArray(&c);
- Mesh mesh(Mesh::TRIANGLES, c * 6, 2);
+ Mesh mesh = Mesh::Builder()
+ .setPrimitive(Mesh::TRIANGLES)
+ .setVertices(c * 6 /* count */, 2 /* size */)
+ .build();
Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
for (size_t i = 0; i < c; i++, r++) {
position[i * 6 + 0].x = r->left;
@@ -793,34 +776,66 @@
// top rectangle and the bottom rectangle, and turn off blending for the middle rectangle.
FloatRect bounds = layer.geometry.roundedCornersCrop;
- // Firstly, we need to convert the coordination from layer native coordination space to
- // device coordination space.
- const auto transformMatrix = display.globalTransform * layer.geometry.positionTransform;
- const vec4 leftTopCoordinate(bounds.left, bounds.top, 1.0, 1.0);
- const vec4 rightBottomCoordinate(bounds.right, bounds.bottom, 1.0, 1.0);
- const vec4 leftTopCoordinateInBuffer = transformMatrix * leftTopCoordinate;
- const vec4 rightBottomCoordinateInBuffer = transformMatrix * rightBottomCoordinate;
- bounds = FloatRect(leftTopCoordinateInBuffer[0], leftTopCoordinateInBuffer[1],
- rightBottomCoordinateInBuffer[0], rightBottomCoordinateInBuffer[1]);
-
- // Secondly, if the display is rotated, we need to undo the rotation on coordination and
- // align the (left, top) and (right, bottom) coordination with the device coordination
- // space.
+ // Explicitly compute the transform from the clip rectangle to the physical
+ // display. Normally, this is done in glViewport but we explicitly compute
+ // it here so that we can get the scissor bounds correct.
+ const Rect& source = display.clip;
+ const Rect& destination = display.physicalDisplay;
+ // Here we compute the following transform:
+ // 1. Translate the top left corner of the source clip to (0, 0)
+ // 2. Rotate the clip rectangle about the origin in accordance with the
+ // orientation flag
+ // 3. Translate the top left corner back to the origin.
+ // 4. Scale the clip rectangle to the destination rectangle dimensions
+ // 5. Translate the top left corner to the destination rectangle's top left
+ // corner.
+ const mat4 translateSource = mat4::translate(vec4(-source.left, -source.top, 0, 1));
+ mat4 rotation;
+ int displacementX = 0;
+ int displacementY = 0;
+ float destinationWidth = static_cast<float>(destination.getWidth());
+ float destinationHeight = static_cast<float>(destination.getHeight());
+ float sourceWidth = static_cast<float>(source.getWidth());
+ float sourceHeight = static_cast<float>(source.getHeight());
+ const float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
switch (display.orientation) {
case ui::Transform::ROT_90:
- std::swap(bounds.left, bounds.right);
+ rotation = mat4::rotate(rot90InRadians, vec3(0, 0, 1));
+ displacementX = source.getHeight();
+ std::swap(sourceHeight, sourceWidth);
break;
case ui::Transform::ROT_180:
- std::swap(bounds.left, bounds.right);
- std::swap(bounds.top, bounds.bottom);
+ rotation = mat4::rotate(rot90InRadians * 2.0f, vec3(0, 0, 1));
+ displacementY = source.getHeight();
+ displacementX = source.getWidth();
break;
case ui::Transform::ROT_270:
- std::swap(bounds.top, bounds.bottom);
+ rotation = mat4::rotate(rot90InRadians * 3.0f, vec3(0, 0, 1));
+ displacementY = source.getWidth();
+ std::swap(sourceHeight, sourceWidth);
break;
default:
break;
}
+ const mat4 intermediateTranslation = mat4::translate(vec4(displacementX, displacementY, 0, 1));
+ const mat4 scale = mat4::scale(
+ vec4(destinationWidth / sourceWidth, destinationHeight / sourceHeight, 1, 1));
+ const mat4 translateDestination =
+ mat4::translate(vec4(destination.left, destination.top, 0, 1));
+ const mat4 globalTransform =
+ translateDestination * scale * intermediateTranslation * rotation * translateSource;
+
+ const mat4 transformMatrix = globalTransform * layer.geometry.positionTransform;
+ const vec4 leftTopCoordinate(bounds.left, bounds.top, 1.0, 1.0);
+ const vec4 rightBottomCoordinate(bounds.right, bounds.bottom, 1.0, 1.0);
+ const vec4 leftTopCoordinateInBuffer = transformMatrix * leftTopCoordinate;
+ const vec4 rightBottomCoordinateInBuffer = transformMatrix * rightBottomCoordinate;
+ bounds = FloatRect(std::min(leftTopCoordinateInBuffer[0], rightBottomCoordinateInBuffer[0]),
+ std::min(leftTopCoordinateInBuffer[1], rightBottomCoordinateInBuffer[1]),
+ std::max(leftTopCoordinateInBuffer[0], rightBottomCoordinateInBuffer[0]),
+ std::max(leftTopCoordinateInBuffer[1], rightBottomCoordinateInBuffer[1]));
+
// Finally, we cut the layer into 3 parts, with top and bottom parts having rounded corners
// and the middle part without rounded corners.
const int32_t radius = ceil(layer.geometry.roundedCornersRadius);
@@ -832,11 +847,14 @@
drawMesh(mesh);
// The middle part of the layer can turn off blending.
- const Rect middleRect(bounds.left, bounds.top + radius, bounds.right, bounds.bottom - radius);
- setScissor(middleRect);
- mState.cornerRadius = 0.0;
- disableBlending();
- drawMesh(mesh);
+ if (topRect.bottom < bottomRect.top) {
+ const Rect middleRect(bounds.left, bounds.top + radius, bounds.right,
+ bounds.bottom - radius);
+ setScissor(middleRect);
+ mState.cornerRadius = 0.0;
+ disableBlending();
+ drawMesh(mesh);
+ }
disableScissor();
}
@@ -856,26 +874,52 @@
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, textureName, 0);
uint32_t glStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
-
ALOGE_IF(glStatus != GL_FRAMEBUFFER_COMPLETE_OES, "glCheckFramebufferStatusOES error %d",
glStatus);
return glStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
}
-void GLESRenderEngine::unbindFrameBuffer(Framebuffer* /* framebuffer */) {
+void GLESRenderEngine::unbindFrameBuffer(Framebuffer* /*framebuffer*/) {
ATRACE_CALL();
// back to main framebuffer
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
+bool GLESRenderEngine::cleanupPostRender() {
+ ATRACE_CALL();
+
+ if (mPriorResourcesCleaned ||
+ (mLastDrawFence != nullptr && mLastDrawFence->getStatus() != Fence::Status::Signaled)) {
+ // If we don't have a prior frame needing cleanup, then don't do anything.
+ return false;
+ }
+
+ // Bind the texture to placeholder so that backing image data can be freed.
+ GLFramebuffer* glFramebuffer = static_cast<GLFramebuffer*>(getFramebufferForDrawing());
+ glFramebuffer->allocateBuffers(1, 1, mPlaceholderDrawBuffer);
+ // Release the cached fence here, so that we don't churn reallocations when
+ // we could no-op repeated calls of this method instead.
+ mLastDrawFence = nullptr;
+ mPriorResourcesCleaned = true;
+ return true;
+}
+
void GLESRenderEngine::checkErrors() const {
+ checkErrors(nullptr);
+}
+
+void GLESRenderEngine::checkErrors(const char* tag) const {
do {
// there could be more than one error flag
GLenum error = glGetError();
if (error == GL_NO_ERROR) break;
- ALOGE("GL error 0x%04x", int(error));
+ if (tag == nullptr) {
+ ALOGE("GL error 0x%04x", int(error));
+ } else {
+ ALOGE("GL error: %s -> 0x%04x", tag, int(error));
+ }
} while (true);
}
@@ -890,7 +934,7 @@
if (useProtectedContext && mProtectedEGLContext == EGL_NO_CONTEXT) {
return false;
}
- const EGLSurface surface = useProtectedContext ? mProtectedDummySurface : mDummySurface;
+ const EGLSurface surface = useProtectedContext ? mProtectedStubSurface : mStubSurface;
const EGLContext context = useProtectedContext ? mProtectedEGLContext : mEGLContext;
const bool success = eglMakeCurrent(mEGLDisplay, surface, surface, context) == EGL_TRUE;
if (success) {
@@ -937,7 +981,7 @@
}
status_t GLESRenderEngine::drawLayers(const DisplaySettings& display,
- const std::vector<LayerSettings>& layers,
+ const std::vector<const LayerSettings*>& layers,
ANativeWindowBuffer* const buffer,
const bool useFramebufferCache, base::unique_fd&& bufferFence,
base::unique_fd* drawFence) {
@@ -947,9 +991,13 @@
return NO_ERROR;
}
- if (bufferFence.get() >= 0 && !waitFence(std::move(bufferFence))) {
- ATRACE_NAME("Waiting before draw");
- sync_wait(bufferFence.get(), -1);
+ if (bufferFence.get() >= 0) {
+ // Duplicate the fence for passing to waitFence.
+ base::unique_fd bufferFenceDup(dup(bufferFence.get()));
+ if (bufferFenceDup < 0 || !waitFence(std::move(bufferFenceDup))) {
+ ATRACE_NAME("Waiting before draw");
+ sync_wait(bufferFence.get(), -1);
+ }
}
if (buffer == nullptr) {
@@ -957,13 +1005,38 @@
return BAD_VALUE;
}
- BindNativeBufferAsFramebuffer fbo(*this, buffer, useFramebufferCache);
+ std::unique_ptr<BindNativeBufferAsFramebuffer> fbo;
+ // Gathering layers that requested blur, we'll need them to decide when to render to an
+ // offscreen buffer, and when to render to the native buffer.
+ std::deque<const LayerSettings*> blurLayers;
+ if (CC_LIKELY(mBlurFilter != nullptr)) {
+ for (auto layer : layers) {
+ if (layer->backgroundBlurRadius > 0) {
+ blurLayers.push_back(layer);
+ }
+ }
+ }
+ const auto blurLayersSize = blurLayers.size();
- if (fbo.getStatus() != NO_ERROR) {
- ALOGE("Failed to bind framebuffer! Aborting GPU composition for buffer (%p).",
- buffer->handle);
- checkErrors();
- return fbo.getStatus();
+ if (blurLayersSize == 0) {
+ fbo = std::make_unique<BindNativeBufferAsFramebuffer>(*this, buffer, useFramebufferCache);
+ if (fbo->getStatus() != NO_ERROR) {
+ ALOGE("Failed to bind framebuffer! Aborting GPU composition for buffer (%p).",
+ buffer->handle);
+ checkErrors();
+ return fbo->getStatus();
+ }
+ setViewportAndProjection(display.physicalDisplay, display.clip);
+ } else {
+ setViewportAndProjection(display.physicalDisplay, display.clip);
+ auto status =
+ mBlurFilter->setAsDrawTarget(display, blurLayers.front()->backgroundBlurRadius);
+ if (status != NO_ERROR) {
+ ALOGE("Failed to prepare blur filter! Aborting GPU composition for buffer (%p).",
+ buffer->handle);
+ checkErrors();
+ return status;
+ }
}
// clear the entire buffer, sometimes when we reuse buffers we'd persist
@@ -973,53 +1046,96 @@
// opaque layers.
clearWithColor(0.0, 0.0, 0.0, 0.0);
- setViewportAndProjection(display.physicalDisplay, display.clip);
-
setOutputDataSpace(display.outputDataspace);
setDisplayMaxLuminance(display.maxLuminance);
- mat4 projectionMatrix = mState.projectionMatrix * display.globalTransform;
- mState.projectionMatrix = projectionMatrix;
+ const mat4 projectionMatrix =
+ ui::Transform(display.orientation).asMatrix4() * mState.projectionMatrix;
if (!display.clearRegion.isEmpty()) {
glDisable(GL_BLEND);
fillRegionWithColor(display.clearRegion, 0.0, 0.0, 0.0, 1.0);
}
- Mesh mesh(Mesh::TRIANGLE_FAN, 4, 2, 2);
- for (auto layer : layers) {
- mState.projectionMatrix = projectionMatrix * layer.geometry.positionTransform;
+ Mesh mesh = Mesh::Builder()
+ .setPrimitive(Mesh::TRIANGLE_FAN)
+ .setVertices(4 /* count */, 2 /* size */)
+ .setTexCoords(2 /* size */)
+ .setCropCoords(2 /* size */)
+ .build();
+ for (auto const layer : layers) {
+ if (blurLayers.size() > 0 && blurLayers.front() == layer) {
+ blurLayers.pop_front();
- const FloatRect bounds = layer.geometry.boundaries;
+ auto status = mBlurFilter->prepare();
+ if (status != NO_ERROR) {
+ ALOGE("Failed to render blur effect! Aborting GPU composition for buffer (%p).",
+ buffer->handle);
+ checkErrors("Can't render first blur pass");
+ return status;
+ }
+
+ if (blurLayers.size() == 0) {
+ // Done blurring, time to bind the native FBO and render our blur onto it.
+ fbo = std::make_unique<BindNativeBufferAsFramebuffer>(*this, buffer,
+ useFramebufferCache);
+ status = fbo->getStatus();
+ setViewportAndProjection(display.physicalDisplay, display.clip);
+ } else {
+ // There's still something else to blur, so let's keep rendering to our FBO
+ // instead of to the display.
+ status = mBlurFilter->setAsDrawTarget(display,
+ blurLayers.front()->backgroundBlurRadius);
+ }
+ if (status != NO_ERROR) {
+ ALOGE("Failed to bind framebuffer! Aborting GPU composition for buffer (%p).",
+ buffer->handle);
+ checkErrors("Can't bind native framebuffer");
+ return status;
+ }
+
+ status = mBlurFilter->render(blurLayersSize > 1);
+ if (status != NO_ERROR) {
+ ALOGE("Failed to render blur effect! Aborting GPU composition for buffer (%p).",
+ buffer->handle);
+ checkErrors("Can't render blur filter");
+ return status;
+ }
+ }
+
+ mState.maxMasteringLuminance = layer->source.buffer.maxMasteringLuminance;
+ mState.maxContentLuminance = layer->source.buffer.maxContentLuminance;
+ mState.projectionMatrix = projectionMatrix * layer->geometry.positionTransform;
+
+ const FloatRect bounds = layer->geometry.boundaries;
Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
position[0] = vec2(bounds.left, bounds.top);
position[1] = vec2(bounds.left, bounds.bottom);
position[2] = vec2(bounds.right, bounds.bottom);
position[3] = vec2(bounds.right, bounds.top);
- setupLayerCropping(layer, mesh);
- setColorTransform(display.colorTransform * layer.colorTransform);
+ setupLayerCropping(*layer, mesh);
+ setColorTransform(display.colorTransform * layer->colorTransform);
bool usePremultipliedAlpha = true;
bool disableTexture = true;
bool isOpaque = false;
-
- if (layer.source.buffer.buffer != nullptr) {
+ if (layer->source.buffer.buffer != nullptr) {
disableTexture = false;
- isOpaque = layer.source.buffer.isOpaque;
+ isOpaque = layer->source.buffer.isOpaque;
- sp<GraphicBuffer> gBuf = layer.source.buffer.buffer;
- bindExternalTextureBuffer(layer.source.buffer.textureName, gBuf,
- layer.source.buffer.fence);
+ sp<GraphicBuffer> gBuf = layer->source.buffer.buffer;
+ bindExternalTextureBuffer(layer->source.buffer.textureName, gBuf,
+ layer->source.buffer.fence);
- usePremultipliedAlpha = layer.source.buffer.usePremultipliedAlpha;
- Texture texture(Texture::TEXTURE_EXTERNAL, layer.source.buffer.textureName);
- mat4 texMatrix = layer.source.buffer.textureTransform;
+ usePremultipliedAlpha = layer->source.buffer.usePremultipliedAlpha;
+ Texture texture(Texture::TEXTURE_EXTERNAL, layer->source.buffer.textureName);
+ mat4 texMatrix = layer->source.buffer.textureTransform;
texture.setMatrix(texMatrix.asArray());
- texture.setFiltering(layer.source.buffer.useTextureFiltering);
+ texture.setFiltering(layer->source.buffer.useTextureFiltering);
texture.setDimensions(gBuf->getWidth(), gBuf->getHeight());
- setSourceY410BT2020(layer.source.buffer.isY410BT2020);
+ setSourceY410BT2020(layer->source.buffer.isY410BT2020);
renderengine::Mesh::VertexArray<vec2> texCoords(mesh.getTexCoordArray<vec2>());
texCoords[0] = vec2(0.0, 0.0);
@@ -1029,28 +1145,32 @@
setupLayerTexturing(texture);
}
- const half3 solidColor = layer.source.solidColor;
- const half4 color = half4(solidColor.r, solidColor.g, solidColor.b, layer.alpha);
+ const half3 solidColor = layer->source.solidColor;
+ const half4 color = half4(solidColor.r, solidColor.g, solidColor.b, layer->alpha);
// Buffer sources will have a black solid color ignored in the shader,
// so in that scenario the solid color passed here is arbitrary.
setupLayerBlending(usePremultipliedAlpha, isOpaque, disableTexture, color,
- layer.geometry.roundedCornersRadius);
- if (layer.disableBlending) {
+ layer->geometry.roundedCornersRadius);
+ if (layer->disableBlending) {
glDisable(GL_BLEND);
}
- setSourceDataSpace(layer.sourceDataspace);
+ setSourceDataSpace(layer->sourceDataspace);
+ if (layer->shadow.length > 0.0f) {
+ handleShadow(layer->geometry.boundaries, layer->geometry.roundedCornersRadius,
+ layer->shadow);
+ }
// We only want to do a special handling for rounded corners when having rounded corners
// is the only reason it needs to turn on blending, otherwise, we handle it like the
// usual way since it needs to turn on blending anyway.
- if (layer.geometry.roundedCornersRadius > 0.0 && color.a >= 1.0f && isOpaque) {
- handleRoundedCorners(display, layer, mesh);
+ else if (layer->geometry.roundedCornersRadius > 0.0 && color.a >= 1.0f && isOpaque) {
+ handleRoundedCorners(display, *layer, mesh);
} else {
drawMesh(mesh);
}
// Cleanup if there's a buffer source
- if (layer.source.buffer.buffer != nullptr) {
+ if (layer->source.buffer.buffer != nullptr) {
disableBlending();
setSourceY410BT2020(false);
disableTexturing();
@@ -1071,39 +1191,18 @@
// us bad parameters, or we messed up our shader generation).
return INVALID_OPERATION;
}
+ mLastDrawFence = nullptr;
+ } else {
+ // The caller takes ownership of drawFence, so we need to duplicate the
+ // fd here.
+ mLastDrawFence = new Fence(dup(drawFence->get()));
}
+ mPriorResourcesCleaned = false;
checkErrors();
return NO_ERROR;
}
-void GLESRenderEngine::setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
- ui::Transform::orientation_flags rotation) {
- setViewportAndProjection(Rect(vpw, vph), sourceCrop);
-
- if (rotation == ui::Transform::ROT_0) {
- return;
- }
-
- // Apply custom rotation to the projection.
- float rot90InRadians = 2.0f * static_cast<float>(M_PI) / 4.0f;
- mat4 m = mState.projectionMatrix;
- switch (rotation) {
- case ui::Transform::ROT_90:
- m = mat4::rotate(rot90InRadians, vec3(0, 0, 1)) * m;
- break;
- case ui::Transform::ROT_180:
- m = mat4::rotate(rot90InRadians * 2.0f, vec3(0, 0, 1)) * m;
- break;
- case ui::Transform::ROT_270:
- m = mat4::rotate(rot90InRadians * 3.0f, vec3(0, 0, 1)) * m;
- break;
- default:
- break;
- }
- mState.projectionMatrix = m;
-}
-
void GLESRenderEngine::setViewportAndProjection(Rect viewport, Rect clip) {
ATRACE_CALL();
mVpWidth = viewport.getWidth();
@@ -1168,14 +1267,6 @@
mState.textureEnabled = true;
}
-void GLESRenderEngine::setupLayerBlackedOut() {
- glBindTexture(GL_TEXTURE_2D, mProtectedTexName);
- Texture texture(Texture::TEXTURE_2D, mProtectedTexName);
- texture.setDimensions(1, 1); // FIXME: we should get that from somewhere
- mState.texture = texture;
- mState.textureEnabled = true;
-}
-
void GLESRenderEngine::setColorTransform(const mat4& colorTransform) {
mState.colorMatrix = colorTransform;
}
@@ -1217,13 +1308,23 @@
mesh.getByteStride(), mesh.getCropCoords());
}
+ if (mState.drawShadows) {
+ glEnableVertexAttribArray(Program::shadowColor);
+ glVertexAttribPointer(Program::shadowColor, mesh.getShadowColorSize(), GL_FLOAT, GL_FALSE,
+ mesh.getByteStride(), mesh.getShadowColor());
+
+ glEnableVertexAttribArray(Program::shadowParams);
+ glVertexAttribPointer(Program::shadowParams, mesh.getShadowParamsSize(), GL_FLOAT, GL_FALSE,
+ mesh.getByteStride(), mesh.getShadowParams());
+ }
+
+ Description managedState = mState;
// By default, DISPLAY_P3 is the only supported wide color output. However,
// when HDR content is present, hardware composer may be able to handle
// BT2020 data space, in that case, the output data space is set to be
// BT2020_HLG or BT2020_PQ respectively. In GPU fall back we need
// to respect this and convert non-HDR content to HDR format.
if (mUseColorManagement) {
- Description managedState = mState;
Dataspace inputStandard = static_cast<Dataspace>(mDataSpace & Dataspace::STANDARD_MASK);
Dataspace inputTransfer = static_cast<Dataspace>(mDataSpace & Dataspace::TRANSFER_MASK);
Dataspace outputStandard =
@@ -1314,27 +1415,25 @@
managedState.outputTransferFunction =
Description::dataSpaceToTransferFunction(outputTransfer);
}
+ }
- ProgramCache::getInstance().useProgram(mInProtectedContext ? mProtectedEGLContext
- : mEGLContext,
- managedState);
+ ProgramCache::getInstance().useProgram(mInProtectedContext ? mProtectedEGLContext : mEGLContext,
+ managedState);
- glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
-
- if (outputDebugPPMs) {
- static uint64_t managedColorFrameCount = 0;
- std::ostringstream out;
- out << "/data/texture_out" << managedColorFrameCount++;
- writePPM(out.str().c_str(), mVpWidth, mVpHeight);
- }
+ if (mState.drawShadows) {
+ glDrawElements(mesh.getPrimitive(), mesh.getIndexCount(), GL_UNSIGNED_SHORT,
+ mesh.getIndices());
} else {
- ProgramCache::getInstance().useProgram(mInProtectedContext ? mProtectedEGLContext
- : mEGLContext,
- mState);
-
glDrawArrays(mesh.getPrimitive(), 0, mesh.getVertexCount());
}
+ if (mUseColorManagement && outputDebugPPMs) {
+ static uint64_t managedColorFrameCount = 0;
+ std::ostringstream out;
+ out << "/data/texture_out" << managedColorFrameCount++;
+ writePPM(out.str().c_str(), mVpWidth, mVpHeight);
+ }
+
if (mesh.getTexCoordsSize()) {
glDisableVertexAttribArray(Program::texCoords);
}
@@ -1342,6 +1441,11 @@
if (mState.cornerRadius > 0.0f) {
glDisableVertexAttribArray(Program::cropCoords);
}
+
+ if (mState.drawShadows) {
+ glDisableVertexAttribArray(Program::shadowColor);
+ glDisableVertexAttribArray(Program::shadowParams);
+ }
}
size_t GLESRenderEngine::getMaxTextureSize() const {
@@ -1459,11 +1563,11 @@
return context;
}
-EGLSurface GLESRenderEngine::createDummyEglPbufferSurface(EGLDisplay display, EGLConfig config,
- int hwcFormat, Protection protection) {
- EGLConfig dummyConfig = config;
- if (dummyConfig == EGL_NO_CONFIG) {
- dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+EGLSurface GLESRenderEngine::createStubEglPbufferSurface(EGLDisplay display, EGLConfig config,
+ int hwcFormat, Protection protection) {
+ EGLConfig stubConfig = config;
+ if (stubConfig == EGL_NO_CONFIG) {
+ stubConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
}
std::vector<EGLint> attributes;
attributes.reserve(7);
@@ -1477,7 +1581,7 @@
}
attributes.push_back(EGL_NONE);
- return eglCreatePbufferSurface(display, dummyConfig, attributes.data());
+ return eglCreatePbufferSurface(display, stubConfig, attributes.data());
}
bool GLESRenderEngine::isHdrDataSpace(const Dataspace dataSpace) const {
@@ -1576,6 +1680,36 @@
}
}
+void GLESRenderEngine::handleShadow(const FloatRect& casterRect, float casterCornerRadius,
+ const ShadowSettings& settings) {
+ ATRACE_CALL();
+ const float casterZ = settings.length / 2.0f;
+ const GLShadowVertexGenerator shadows(casterRect, casterCornerRadius, casterZ,
+ settings.casterIsTranslucent, settings.ambientColor,
+ settings.spotColor, settings.lightPos,
+ settings.lightRadius);
+
+ // setup mesh for both shadows
+ Mesh mesh = Mesh::Builder()
+ .setPrimitive(Mesh::TRIANGLES)
+ .setVertices(shadows.getVertexCount(), 2 /* size */)
+ .setShadowAttrs()
+ .setIndices(shadows.getIndexCount())
+ .build();
+
+ Mesh::VertexArray<vec2> position = mesh.getPositionArray<vec2>();
+ Mesh::VertexArray<vec4> shadowColor = mesh.getShadowColorArray<vec4>();
+ Mesh::VertexArray<vec3> shadowParams = mesh.getShadowParamsArray<vec3>();
+ shadows.fillVertices(position, shadowColor, shadowParams);
+ shadows.fillIndices(mesh.getIndicesArray());
+
+ mState.cornerRadius = 0.0f;
+ mState.drawShadows = true;
+ setupLayerTexturing(mShadowTexture.getTexture());
+ drawMesh(mesh);
+ mState.drawShadows = false;
+}
+
} // namespace gl
} // namespace renderengine
} // namespace android
diff --git a/libs/renderengine/gl/GLESRenderEngine.h b/libs/renderengine/gl/GLESRenderEngine.h
index dd60e50..61986ff 100644
--- a/libs/renderengine/gl/GLESRenderEngine.h
+++ b/libs/renderengine/gl/GLESRenderEngine.h
@@ -17,7 +17,6 @@
#ifndef SF_GLESRENDERENGINE_H_
#define SF_GLESRENDERENGINE_H_
-#include <stdint.h>
#include <condition_variable>
#include <deque>
#include <mutex>
@@ -32,6 +31,7 @@
#include <renderengine/RenderEngine.h>
#include <renderengine/private/Description.h>
#include <sys/types.h>
+#include "GLShadowTexture.h"
#include "ImageManager.h"
#define EGL_NO_CONFIG ((EGLConfig)0)
@@ -46,30 +46,18 @@
namespace gl {
class GLImage;
+class BlurFilter;
class GLESRenderEngine : public impl::RenderEngine {
public:
- static std::unique_ptr<GLESRenderEngine> create(int hwcFormat, uint32_t featureFlags,
- uint32_t imageCacheSize);
- static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
+ static std::unique_ptr<GLESRenderEngine> create(const RenderEngineCreationArgs& args);
- GLESRenderEngine(uint32_t featureFlags, // See RenderEngine::FeatureFlag
- EGLDisplay display, EGLConfig config, EGLContext ctxt, EGLSurface dummy,
- EGLContext protectedContext, EGLSurface protectedDummy,
- uint32_t imageCacheSize);
+ GLESRenderEngine(const RenderEngineCreationArgs& args, EGLDisplay display, EGLConfig config,
+ EGLContext ctxt, EGLSurface stub, EGLContext protectedContext,
+ EGLSurface protectedStub);
~GLESRenderEngine() override EXCLUDES(mRenderingMutex);
- std::unique_ptr<Framebuffer> createFramebuffer() override;
- std::unique_ptr<Image> createImage() override;
-
void primeCache() const override;
- bool isCurrent() const override;
- base::unique_fd flush() override;
- bool finish() override;
- bool waitFence(base::unique_fd fenceFd) override;
- void clearWithColor(float red, float green, float blue, float alpha) override;
- void fillRegionWithColor(const Region& region, float red, float green, float blue,
- float alpha) override;
void genTextures(size_t count, uint32_t* names) override;
void deleteTextures(size_t count, uint32_t const* names) override;
void bindExternalTextureImage(uint32_t texName, const Image& image) override;
@@ -79,18 +67,17 @@
void unbindExternalTextureBuffer(uint64_t bufferId) EXCLUDES(mRenderingMutex);
status_t bindFrameBuffer(Framebuffer* framebuffer) override;
void unbindFrameBuffer(Framebuffer* framebuffer) override;
- void checkErrors() const override;
bool isProtected() const override { return mInProtectedContext; }
bool supportsProtectedContent() const override;
bool useProtectedContext(bool useProtectedContext) override;
- status_t drawLayers(const DisplaySettings& display, const std::vector<LayerSettings>& layers,
+ status_t drawLayers(const DisplaySettings& display,
+ const std::vector<const LayerSettings*>& layers,
ANativeWindowBuffer* buffer, const bool useFramebufferCache,
base::unique_fd&& bufferFence, base::unique_fd* drawFence) override;
+ bool cleanupPostRender() override;
- // internal to RenderEngine
EGLDisplay getEGLDisplay() const { return mEGLDisplay; }
- EGLConfig getEGLConfig() const { return mEGLConfig; }
// Creates an output image for rendering to
EGLImageKHR createFramebufferImageIfNeeded(ANativeWindowBuffer* nativeBuffer, bool isProtected,
bool useFramebufferCache)
@@ -112,27 +99,6 @@
Framebuffer* getFramebufferForDrawing() override;
void dump(std::string& result) override EXCLUDES(mRenderingMutex)
EXCLUDES(mFramebufferImageCacheMutex);
- void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
- ui::Transform::orientation_flags rotation) override;
- void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
- const half4& color, float cornerRadius) override;
- void setupLayerTexturing(const Texture& texture) override;
- void setupLayerBlackedOut() override;
- void setupFillWithColor(float r, float g, float b, float a) override;
- void setColorTransform(const mat4& colorTransform) override;
- void disableTexturing() override;
- void disableBlending() override;
- void setupCornerRadiusCropSize(float width, float height) override;
-
- // HDR and color management related functions and state
- void setSourceY410BT2020(bool enable) override;
- void setSourceDataSpace(ui::Dataspace source) override;
- void setOutputDataSpace(ui::Dataspace dataspace) override;
- void setDisplayMaxLuminance(const float maxLuminance) override;
-
- // drawing
- void drawMesh(const Mesh& mesh) override;
-
size_t getMaxTextureSize() const override;
size_t getMaxViewportDims() const override;
@@ -144,12 +110,17 @@
GLES_VERSION_3_0 = 0x30000,
};
+ static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
static GlesVersion parseGlesVersion(const char* str);
static EGLContext createEglContext(EGLDisplay display, EGLConfig config,
EGLContext shareContext, bool useContextPriority,
Protection protection);
- static EGLSurface createDummyEglPbufferSurface(EGLDisplay display, EGLConfig config,
- int hwcFormat, Protection protection);
+ static EGLSurface createStubEglPbufferSurface(EGLDisplay display, EGLConfig config,
+ int hwcFormat, Protection protection);
+ std::unique_ptr<Framebuffer> createFramebuffer();
+ std::unique_ptr<Image> createImage();
+ void checkErrors() const;
+ void checkErrors(const char* tag) const;
void setScissor(const Rect& region);
void disableScissor();
bool waitSync(EGLSyncKHR sync, EGLint flags);
@@ -176,19 +147,43 @@
// blending is an expensive operation, we want to turn off blending when it's not necessary.
void handleRoundedCorners(const DisplaySettings& display, const LayerSettings& layer,
const Mesh& mesh);
+ base::unique_fd flush();
+ bool finish();
+ bool waitFence(base::unique_fd fenceFd);
+ void clearWithColor(float red, float green, float blue, float alpha);
+ void fillRegionWithColor(const Region& region, float red, float green, float blue, float alpha);
+ void handleShadow(const FloatRect& casterRect, float casterCornerRadius,
+ const ShadowSettings& shadowSettings);
+ void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
+ const half4& color, float cornerRadius);
+ void setupLayerTexturing(const Texture& texture);
+ void setupFillWithColor(float r, float g, float b, float a);
+ void setColorTransform(const mat4& colorTransform);
+ void disableTexturing();
+ void disableBlending();
+ void setupCornerRadiusCropSize(float width, float height);
+
+ // HDR and color management related functions and state
+ void setSourceY410BT2020(bool enable);
+ void setSourceDataSpace(ui::Dataspace source);
+ void setOutputDataSpace(ui::Dataspace dataspace);
+ void setDisplayMaxLuminance(const float maxLuminance);
+
+ // drawing
+ void drawMesh(const Mesh& mesh);
EGLDisplay mEGLDisplay;
EGLConfig mEGLConfig;
EGLContext mEGLContext;
- EGLSurface mDummySurface;
+ EGLSurface mStubSurface;
EGLContext mProtectedEGLContext;
- EGLSurface mProtectedDummySurface;
- GLuint mProtectedTexName;
+ EGLSurface mProtectedStubSurface;
GLint mMaxViewportDims[2];
GLint mMaxTextureSize;
GLuint mVpWidth;
GLuint mVpHeight;
Description mState;
+ GLShadowTexture mShadowTexture;
mat4 mSrgbToXyz;
mat4 mDisplayP3ToXyz;
@@ -236,6 +231,20 @@
std::mutex mRenderingMutex;
std::unique_ptr<Framebuffer> mDrawingBuffer;
+ // this is a 1x1 RGB buffer, but over-allocate in case a driver wants more
+ // memory or if it needs to satisfy alignment requirements. In this case:
+ // assume that each channel requires 4 bytes, and add 3 additional bytes to
+ // ensure that we align on a word. Allocating 16 bytes will provide a
+ // guarantee that we don't clobber memory.
+ uint32_t mPlaceholderDrawBuffer[4];
+ sp<Fence> mLastDrawFence;
+ // Store a separate boolean checking if prior resources were cleaned up, as
+ // devices that don't support native sync fences can't rely on a last draw
+ // fence that doesn't exist.
+ bool mPriorResourcesCleaned = true;
+
+ // Blur effect processor, only instantiated when a layer requests it.
+ BlurFilter* mBlurFilter = nullptr;
class FlushTracer {
public:
@@ -260,6 +269,9 @@
};
friend class FlushTracer;
friend class ImageManager;
+ friend class GLFramebuffer;
+ friend class BlurFilter;
+ friend class GenericProgram;
std::unique_ptr<FlushTracer> mFlushTracer;
std::unique_ptr<ImageManager> mImageManager = std::make_unique<ImageManager>(this);
};
diff --git a/libs/renderengine/gl/GLFramebuffer.cpp b/libs/renderengine/gl/GLFramebuffer.cpp
index 5fbb5ba..383486b 100644
--- a/libs/renderengine/gl/GLFramebuffer.cpp
+++ b/libs/renderengine/gl/GLFramebuffer.cpp
@@ -20,8 +20,8 @@
#include <GLES/gl.h>
#include <GLES/glext.h>
-#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
+#include <GLES3/gl3.h>
#include <gui/DebugEGLImageTracker.h>
#include <nativebase/nativebase.h>
#include <utils/Trace.h>
@@ -68,6 +68,47 @@
return true;
}
+void GLFramebuffer::allocateBuffers(uint32_t width, uint32_t height, void* data) {
+ ATRACE_CALL();
+
+ glBindTexture(GL_TEXTURE_2D, mTextureName);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, data);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
+
+ mBufferHeight = height;
+ mBufferWidth = width;
+ mEngine.checkErrors("Allocating Fbo texture");
+
+ bind();
+ glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, mTextureName, 0);
+ mStatus = glCheckFramebufferStatus(GL_FRAMEBUFFER);
+ unbind();
+ glBindTexture(GL_TEXTURE_2D, 0);
+
+ if (mStatus != GL_FRAMEBUFFER_COMPLETE) {
+ ALOGE("Frame buffer is not complete. Error %d", mStatus);
+ }
+}
+
+void GLFramebuffer::bind() const {
+ glBindFramebuffer(GL_FRAMEBUFFER, mFramebufferName);
+}
+
+void GLFramebuffer::bindAsReadBuffer() const {
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, mFramebufferName);
+}
+
+void GLFramebuffer::bindAsDrawBuffer() const {
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, mFramebufferName);
+}
+
+void GLFramebuffer::unbind() const {
+ glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
} // namespace gl
} // namespace renderengine
} // namespace android
diff --git a/libs/renderengine/gl/GLFramebuffer.h b/libs/renderengine/gl/GLFramebuffer.h
index b7650bb..6757695 100644
--- a/libs/renderengine/gl/GLFramebuffer.h
+++ b/libs/renderengine/gl/GLFramebuffer.h
@@ -20,6 +20,7 @@
#include <EGL/egl.h>
#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
#include <renderengine/Framebuffer.h>
struct ANativeWindowBuffer;
@@ -33,21 +34,29 @@
class GLFramebuffer : public renderengine::Framebuffer {
public:
explicit GLFramebuffer(GLESRenderEngine& engine);
+ explicit GLFramebuffer(GLESRenderEngine& engine, bool multiTarget);
~GLFramebuffer() override;
bool setNativeWindowBuffer(ANativeWindowBuffer* nativeBuffer, bool isProtected,
const bool useFramebufferCache) override;
+ void allocateBuffers(uint32_t width, uint32_t height, void* data = nullptr);
EGLImageKHR getEGLImage() const { return mEGLImage; }
uint32_t getTextureName() const { return mTextureName; }
uint32_t getFramebufferName() const { return mFramebufferName; }
int32_t getBufferHeight() const { return mBufferHeight; }
int32_t getBufferWidth() const { return mBufferWidth; }
+ GLenum getStatus() const { return mStatus; }
+ void bind() const;
+ void bindAsReadBuffer() const;
+ void bindAsDrawBuffer() const;
+ void unbind() const;
private:
GLESRenderEngine& mEngine;
EGLDisplay mEGLDisplay;
EGLImageKHR mEGLImage;
bool usingFramebufferCache = false;
+ GLenum mStatus = GL_FRAMEBUFFER_UNSUPPORTED;
uint32_t mTextureName, mFramebufferName;
int32_t mBufferHeight = 0;
diff --git a/libs/renderengine/gl/GLShadowTexture.cpp b/libs/renderengine/gl/GLShadowTexture.cpp
new file mode 100644
index 0000000..2423a34
--- /dev/null
+++ b/libs/renderengine/gl/GLShadowTexture.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+#include <GLES3/gl3.h>
+
+#include "GLShadowTexture.h"
+#include "GLSkiaShadowPort.h"
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+GLShadowTexture::GLShadowTexture() {
+ fillShadowTextureData(mTextureData, SHADOW_TEXTURE_WIDTH);
+
+ glGenTextures(1, &mName);
+ glBindTexture(GL_TEXTURE_2D, mName);
+ glTexImage2D(GL_TEXTURE_2D, 0 /* base image level */, GL_ALPHA, SHADOW_TEXTURE_WIDTH,
+ SHADOW_TEXTURE_HEIGHT, 0 /* border */, GL_ALPHA, GL_UNSIGNED_BYTE, mTextureData);
+ mTexture.init(Texture::TEXTURE_2D, mName);
+ mTexture.setFiltering(true);
+ mTexture.setDimensions(SHADOW_TEXTURE_WIDTH, 1);
+}
+
+GLShadowTexture::~GLShadowTexture() {
+ glDeleteTextures(1, &mName);
+}
+
+const Texture& GLShadowTexture::getTexture() {
+ return mTexture;
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLShadowTexture.h b/libs/renderengine/gl/GLShadowTexture.h
new file mode 100644
index 0000000..250a9d7
--- /dev/null
+++ b/libs/renderengine/gl/GLShadowTexture.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <renderengine/Texture.h>
+#include <cstdint>
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLShadowTexture {
+public:
+ GLShadowTexture();
+ ~GLShadowTexture();
+
+ const Texture& getTexture();
+
+private:
+ static constexpr int SHADOW_TEXTURE_WIDTH = 128;
+ static constexpr int SHADOW_TEXTURE_HEIGHT = 1;
+
+ GLuint mName;
+ Texture mTexture;
+ uint8_t mTextureData[SHADOW_TEXTURE_WIDTH];
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLShadowVertexGenerator.cpp b/libs/renderengine/gl/GLShadowVertexGenerator.cpp
new file mode 100644
index 0000000..3181f9b
--- /dev/null
+++ b/libs/renderengine/gl/GLShadowVertexGenerator.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <renderengine/Mesh.h>
+
+#include <math/vec4.h>
+
+#include <ui/Rect.h>
+#include <ui/Transform.h>
+
+#include "GLShadowVertexGenerator.h"
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+GLShadowVertexGenerator::GLShadowVertexGenerator(const FloatRect& casterRect,
+ float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent, const vec4& ambientColor,
+ const vec4& spotColor, const vec3& lightPosition,
+ float lightRadius) {
+ mDrawAmbientShadow = ambientColor.a > 0.f;
+ mDrawSpotShadow = spotColor.a > 0.f;
+
+ // Generate geometries and find number of vertices to generate
+ if (mDrawAmbientShadow) {
+ mAmbientShadowGeometry = getAmbientShadowGeometry(casterRect, casterCornerRadius, casterZ,
+ casterIsTranslucent, ambientColor);
+ mAmbientShadowVertexCount = getVertexCountForGeometry(*mAmbientShadowGeometry.get());
+ mAmbientShadowIndexCount = getIndexCountForGeometry(*mAmbientShadowGeometry.get());
+ } else {
+ mAmbientShadowVertexCount = 0;
+ mAmbientShadowIndexCount = 0;
+ }
+
+ if (mDrawSpotShadow) {
+ mSpotShadowGeometry =
+ getSpotShadowGeometry(casterRect, casterCornerRadius, casterZ, casterIsTranslucent,
+ spotColor, lightPosition, lightRadius);
+ mSpotShadowVertexCount = getVertexCountForGeometry(*mSpotShadowGeometry.get());
+ mSpotShadowIndexCount = getIndexCountForGeometry(*mSpotShadowGeometry.get());
+ } else {
+ mSpotShadowVertexCount = 0;
+ mSpotShadowIndexCount = 0;
+ }
+}
+
+size_t GLShadowVertexGenerator::getVertexCount() const {
+ return mAmbientShadowVertexCount + mSpotShadowVertexCount;
+}
+
+size_t GLShadowVertexGenerator::getIndexCount() const {
+ return mAmbientShadowIndexCount + mSpotShadowIndexCount;
+}
+
+void GLShadowVertexGenerator::fillVertices(Mesh::VertexArray<vec2>& position,
+ Mesh::VertexArray<vec4>& color,
+ Mesh::VertexArray<vec3>& params) const {
+ if (mDrawAmbientShadow) {
+ fillVerticesForGeometry(*mAmbientShadowGeometry.get(), mAmbientShadowVertexCount, position,
+ color, params);
+ }
+ if (mDrawSpotShadow) {
+ fillVerticesForGeometry(*mSpotShadowGeometry.get(), mSpotShadowVertexCount,
+ Mesh::VertexArray<vec2>(position, mAmbientShadowVertexCount),
+ Mesh::VertexArray<vec4>(color, mAmbientShadowVertexCount),
+ Mesh::VertexArray<vec3>(params, mAmbientShadowVertexCount));
+ }
+}
+
+void GLShadowVertexGenerator::fillIndices(uint16_t* indices) const {
+ if (mDrawAmbientShadow) {
+ fillIndicesForGeometry(*mAmbientShadowGeometry.get(), mAmbientShadowIndexCount,
+ 0 /* starting vertex offset */, indices);
+ }
+ if (mDrawSpotShadow) {
+ fillIndicesForGeometry(*mSpotShadowGeometry.get(), mSpotShadowIndexCount,
+ mAmbientShadowVertexCount /* starting vertex offset */,
+ &(indices[mAmbientShadowIndexCount]));
+ }
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLShadowVertexGenerator.h b/libs/renderengine/gl/GLShadowVertexGenerator.h
new file mode 100644
index 0000000..112f976
--- /dev/null
+++ b/libs/renderengine/gl/GLShadowVertexGenerator.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <math/vec4.h>
+#include <ui/Rect.h>
+
+#include "GLSkiaShadowPort.h"
+
+namespace android {
+namespace renderengine {
+
+class Mesh;
+
+namespace gl {
+
+/**
+ * Generates gl attributes required to draw shadow spot and/or ambient shadows.
+ *
+ * Each shadow can support different colors. This class generates three vertex attributes for
+ * each shadow, its position, color and shadow params(offset and distance). These can be sent
+ * using a single glDrawElements call.
+ */
+class GLShadowVertexGenerator {
+public:
+ GLShadowVertexGenerator(const FloatRect& casterRect, float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent, const vec4& ambientColor,
+ const vec4& spotColor, const vec3& lightPosition, float lightRadius);
+ ~GLShadowVertexGenerator() = default;
+
+ size_t getVertexCount() const;
+ size_t getIndexCount() const;
+ void fillVertices(Mesh::VertexArray<vec2>& position, Mesh::VertexArray<vec4>& color,
+ Mesh::VertexArray<vec3>& params) const;
+ void fillIndices(uint16_t* indices) const;
+
+private:
+ bool mDrawAmbientShadow;
+ std::unique_ptr<Geometry> mAmbientShadowGeometry;
+ int mAmbientShadowVertexCount = 0;
+ int mAmbientShadowIndexCount = 0;
+
+ bool mDrawSpotShadow;
+ std::unique_ptr<Geometry> mSpotShadowGeometry;
+ int mSpotShadowVertexCount = 0;
+ int mSpotShadowIndexCount = 0;
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLSkiaShadowPort.cpp b/libs/renderengine/gl/GLSkiaShadowPort.cpp
new file mode 100644
index 0000000..da8b435
--- /dev/null
+++ b/libs/renderengine/gl/GLSkiaShadowPort.cpp
@@ -0,0 +1,656 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <math/vec4.h>
+
+#include <renderengine/Mesh.h>
+
+#include <ui/Rect.h>
+#include <ui/Transform.h>
+
+#include <utils/Log.h>
+
+#include "GLSkiaShadowPort.h"
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+/**
+ * The shadow geometry logic and vertex generation code has been ported from skia shadow
+ * fast path OpenGL implementation to draw shadows around rects and rounded rects including
+ * circles.
+ *
+ * path: skia/src/gpu/GrRenderTargetContext.cpp GrRenderTargetContext::drawFastShadow
+ *
+ * Modifications made:
+ * - Switched to using std lib math functions
+ * - Fall off function is implemented in vertex shader rather than a shadow texture
+ * - Removed transformations applied on the caster rect since the caster will be in local
+ * coordinate space and will be transformed by the vertex shader.
+ */
+
+static inline float divide_and_pin(float numer, float denom, float min, float max) {
+ if (denom == 0.0f) return min;
+ return std::clamp(numer / denom, min, max);
+}
+
+static constexpr auto SK_ScalarSqrt2 = 1.41421356f;
+static constexpr auto kAmbientHeightFactor = 1.0f / 128.0f;
+static constexpr auto kAmbientGeomFactor = 64.0f;
+// Assuming that we have a light height of 600 for the spot shadow,
+// the spot values will reach their maximum at a height of approximately 292.3077.
+// We'll round up to 300 to keep it simple.
+static constexpr auto kMaxAmbientRadius = 300 * kAmbientHeightFactor * kAmbientGeomFactor;
+
+inline float AmbientBlurRadius(float height) {
+ return std::min(height * kAmbientHeightFactor * kAmbientGeomFactor, kMaxAmbientRadius);
+}
+inline float AmbientRecipAlpha(float height) {
+ return 1.0f + std::max(height * kAmbientHeightFactor, 0.0f);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+// Circle Data
+//
+// We have two possible cases for geometry for a circle:
+
+// In the case of a normal fill, we draw geometry for the circle as an octagon.
+static const uint16_t gFillCircleIndices[] = {
+ // enter the octagon
+ // clang-format off
+ 0, 1, 8, 1, 2, 8,
+ 2, 3, 8, 3, 4, 8,
+ 4, 5, 8, 5, 6, 8,
+ 6, 7, 8, 7, 0, 8,
+ // clang-format on
+};
+
+// For stroked circles, we use two nested octagons.
+static const uint16_t gStrokeCircleIndices[] = {
+ // enter the octagon
+ // clang-format off
+ 0, 1, 9, 0, 9, 8,
+ 1, 2, 10, 1, 10, 9,
+ 2, 3, 11, 2, 11, 10,
+ 3, 4, 12, 3, 12, 11,
+ 4, 5, 13, 4, 13, 12,
+ 5, 6, 14, 5, 14, 13,
+ 6, 7, 15, 6, 15, 14,
+ 7, 0, 8, 7, 8, 15,
+ // clang-format on
+};
+
+#define SK_ARRAY_COUNT(a) (sizeof(a) / sizeof((a)[0]))
+static const int kIndicesPerFillCircle = SK_ARRAY_COUNT(gFillCircleIndices);
+static const int kIndicesPerStrokeCircle = SK_ARRAY_COUNT(gStrokeCircleIndices);
+static const int kVertsPerStrokeCircle = 16;
+static const int kVertsPerFillCircle = 9;
+
+static int circle_type_to_vert_count(bool stroked) {
+ return stroked ? kVertsPerStrokeCircle : kVertsPerFillCircle;
+}
+
+static int circle_type_to_index_count(bool stroked) {
+ return stroked ? kIndicesPerStrokeCircle : kIndicesPerFillCircle;
+}
+
+static const uint16_t* circle_type_to_indices(bool stroked) {
+ return stroked ? gStrokeCircleIndices : gFillCircleIndices;
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// RoundRect Data
+//
+// The geometry for a shadow roundrect is similar to a 9-patch:
+// ____________
+// |_|________|_|
+// | | | |
+// | | | |
+// | | | |
+// |_|________|_|
+// |_|________|_|
+//
+// However, each corner is rendered as a fan rather than a simple quad, as below. (The diagram
+// shows the upper part of the upper left corner. The bottom triangle would similarly be split
+// into two triangles.)
+// ________
+// |\ \ |
+// | \ \ |
+// | \\ |
+// | \|
+// --------
+//
+// The center of the fan handles the curve of the corner. For roundrects where the stroke width
+// is greater than the corner radius, the outer triangles blend from the curve to the straight
+// sides. Otherwise these triangles will be degenerate.
+//
+// In the case where the stroke width is greater than the corner radius and the
+// blur radius (overstroke), we add additional geometry to mark out the rectangle in the center.
+// This rectangle extends the coverage values of the center edges of the 9-patch.
+// ____________
+// |_|________|_|
+// | |\ ____ /| |
+// | | | | | |
+// | | |____| | |
+// |_|/______\|_|
+// |_|________|_|
+//
+// For filled rrects we reuse the stroke geometry but add an additional quad to the center.
+
+static const uint16_t gRRectIndices[] = {
+ // clang-format off
+ // overstroke quads
+ // we place this at the beginning so that we can skip these indices when rendering as filled
+ 0, 6, 25, 0, 25, 24,
+ 6, 18, 27, 6, 27, 25,
+ 18, 12, 26, 18, 26, 27,
+ 12, 0, 24, 12, 24, 26,
+
+ // corners
+ 0, 1, 2, 0, 2, 3, 0, 3, 4, 0, 4, 5,
+ 6, 11, 10, 6, 10, 9, 6, 9, 8, 6, 8, 7,
+ 12, 17, 16, 12, 16, 15, 12, 15, 14, 12, 14, 13,
+ 18, 19, 20, 18, 20, 21, 18, 21, 22, 18, 22, 23,
+
+ // edges
+ 0, 5, 11, 0, 11, 6,
+ 6, 7, 19, 6, 19, 18,
+ 18, 23, 17, 18, 17, 12,
+ 12, 13, 1, 12, 1, 0,
+
+ // fill quad
+ // we place this at the end so that we can skip these indices when rendering as stroked
+ 0, 6, 18, 0, 18, 12,
+ // clang-format on
+};
+
+// overstroke count
+static const int kIndicesPerOverstrokeRRect = SK_ARRAY_COUNT(gRRectIndices) - 6;
+// simple stroke count skips overstroke indices
+static const int kIndicesPerStrokeRRect = kIndicesPerOverstrokeRRect - 6 * 4;
+// fill count adds final quad to stroke count
+static const int kIndicesPerFillRRect = kIndicesPerStrokeRRect + 6;
+static const int kVertsPerStrokeRRect = 24;
+static const int kVertsPerOverstrokeRRect = 28;
+static const int kVertsPerFillRRect = 24;
+
+static int rrect_type_to_vert_count(RRectType type) {
+ switch (type) {
+ case kFill_RRectType:
+ return kVertsPerFillRRect;
+ case kStroke_RRectType:
+ return kVertsPerStrokeRRect;
+ case kOverstroke_RRectType:
+ return kVertsPerOverstrokeRRect;
+ }
+ ALOGE("Invalid rect type: %d", type);
+ return -1;
+}
+
+static int rrect_type_to_index_count(RRectType type) {
+ switch (type) {
+ case kFill_RRectType:
+ return kIndicesPerFillRRect;
+ case kStroke_RRectType:
+ return kIndicesPerStrokeRRect;
+ case kOverstroke_RRectType:
+ return kIndicesPerOverstrokeRRect;
+ }
+ ALOGE("Invalid rect type: %d", type);
+ return -1;
+}
+
+static const uint16_t* rrect_type_to_indices(RRectType type) {
+ switch (type) {
+ case kFill_RRectType:
+ case kStroke_RRectType:
+ return gRRectIndices + 6 * 4;
+ case kOverstroke_RRectType:
+ return gRRectIndices;
+ }
+ ALOGE("Invalid rect type: %d", type);
+ return nullptr;
+}
+
+static void fillInCircleVerts(const Geometry& args, bool isStroked,
+ Mesh::VertexArray<vec2>& position,
+ Mesh::VertexArray<vec4>& shadowColor,
+ Mesh::VertexArray<vec3>& shadowParams) {
+ vec4 color = args.fColor;
+ float outerRadius = args.fOuterRadius;
+ float innerRadius = args.fInnerRadius;
+ float blurRadius = args.fBlurRadius;
+ float distanceCorrection = outerRadius / blurRadius;
+
+ const FloatRect& bounds = args.fDevBounds;
+
+ // The inner radius in the vertex data must be specified in normalized space.
+ innerRadius = innerRadius / outerRadius;
+
+ vec2 center = vec2(bounds.getWidth() / 2.0f, bounds.getHeight() / 2.0f);
+ float halfWidth = 0.5f * bounds.getWidth();
+ float octOffset = 0.41421356237f; // sqrt(2) - 1
+ int vertexCount = 0;
+
+ position[vertexCount] = center + vec2(-octOffset * halfWidth, -halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-octOffset, -1, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(octOffset * halfWidth, -halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(octOffset, -1, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(halfWidth, -octOffset * halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(1, -octOffset, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(halfWidth, octOffset * halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(1, octOffset, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(octOffset * halfWidth, halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(octOffset, 1, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-octOffset * halfWidth, halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-octOffset, 1, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-halfWidth, octOffset * halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-1, octOffset, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-halfWidth, -octOffset * halfWidth);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-1, -octOffset, distanceCorrection);
+ vertexCount++;
+
+ if (isStroked) {
+ // compute the inner ring
+
+ // cosine and sine of pi/8
+ float c = 0.923579533f;
+ float s = 0.382683432f;
+ float r = args.fInnerRadius;
+
+ position[vertexCount] = center + vec2(-s * r, -c * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-s * innerRadius, -c * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(s * r, -c * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(s * innerRadius, -c * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(c * r, -s * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(c * innerRadius, -s * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(c * r, s * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(c * innerRadius, s * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(s * r, c * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(s * innerRadius, c * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-s * r, c * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-s * innerRadius, c * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-c * r, s * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-c * innerRadius, s * innerRadius, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = center + vec2(-c * r, -s * r);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(-c * innerRadius, -s * innerRadius, distanceCorrection);
+ vertexCount++;
+ } else {
+ // filled
+ position[vertexCount] = center;
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+ }
+}
+
+static void fillInRRectVerts(const Geometry& args, Mesh::VertexArray<vec2>& position,
+ Mesh::VertexArray<vec4>& shadowColor,
+ Mesh::VertexArray<vec3>& shadowParams) {
+ vec4 color = args.fColor;
+ float outerRadius = args.fOuterRadius;
+
+ const FloatRect& bounds = args.fDevBounds;
+
+ float umbraInset = args.fUmbraInset;
+ float minDim = 0.5f * std::min(bounds.getWidth(), bounds.getHeight());
+ if (umbraInset > minDim) {
+ umbraInset = minDim;
+ }
+
+ float xInner[4] = {bounds.left + umbraInset, bounds.right - umbraInset,
+ bounds.left + umbraInset, bounds.right - umbraInset};
+ float xMid[4] = {bounds.left + outerRadius, bounds.right - outerRadius,
+ bounds.left + outerRadius, bounds.right - outerRadius};
+ float xOuter[4] = {bounds.left, bounds.right, bounds.left, bounds.right};
+ float yInner[4] = {bounds.top + umbraInset, bounds.top + umbraInset, bounds.bottom - umbraInset,
+ bounds.bottom - umbraInset};
+ float yMid[4] = {bounds.top + outerRadius, bounds.top + outerRadius,
+ bounds.bottom - outerRadius, bounds.bottom - outerRadius};
+ float yOuter[4] = {bounds.top, bounds.top, bounds.bottom, bounds.bottom};
+
+ float blurRadius = args.fBlurRadius;
+
+ // In the case where we have to inset more for the umbra, our two triangles in the
+ // corner get skewed to a diamond rather than a square. To correct for that,
+ // we also skew the vectors we send to the shader that help define the circle.
+ // By doing so, we end up with a quarter circle in the corner rather than the
+ // elliptical curve.
+
+ // This is a bit magical, but it gives us the correct results at extrema:
+ // a) umbraInset == outerRadius produces an orthogonal vector
+ // b) outerRadius == 0 produces a diagonal vector
+ // And visually the corner looks correct.
+ vec2 outerVec = vec2(outerRadius - umbraInset, -outerRadius - umbraInset);
+ outerVec = normalize(outerVec);
+ // We want the circle edge to fall fractionally along the diagonal at
+ // (sqrt(2)*(umbraInset - outerRadius) + outerRadius)/sqrt(2)*umbraInset
+ //
+ // Setting the components of the diagonal offset to the following value will give us that.
+ float diagVal = umbraInset / (SK_ScalarSqrt2 * (outerRadius - umbraInset) - outerRadius);
+ vec2 diagVec = vec2(diagVal, diagVal);
+ float distanceCorrection = umbraInset / blurRadius;
+
+ int vertexCount = 0;
+ // build corner by corner
+ for (int i = 0; i < 4; ++i) {
+ // inner point
+ position[vertexCount] = vec2(xInner[i], yInner[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+
+ // outer points
+ position[vertexCount] = vec2(xOuter[i], yInner[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, -1, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = vec2(xOuter[i], yMid[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(outerVec.x, outerVec.y, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = vec2(xOuter[i], yOuter[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(diagVec.x, diagVec.y, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = vec2(xMid[i], yOuter[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(outerVec.x, outerVec.y, distanceCorrection);
+ vertexCount++;
+
+ position[vertexCount] = vec2(xInner[i], yOuter[i]);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, -1, distanceCorrection);
+ vertexCount++;
+ }
+
+ // Add the additional vertices for overstroked rrects.
+ // Effectively this is an additional stroked rrect, with its
+ // parameters equal to those in the center of the 9-patch. This will
+ // give constant values across this inner ring.
+ if (kOverstroke_RRectType == args.fType) {
+ float inset = umbraInset + args.fInnerRadius;
+
+ // TL
+ position[vertexCount] = vec2(bounds.left + inset, bounds.top + inset);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+
+ // TR
+ position[vertexCount] = vec2(bounds.right - inset, bounds.top + inset);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+
+ // BL
+ position[vertexCount] = vec2(bounds.left + inset, bounds.bottom - inset);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+
+ // BR
+ position[vertexCount] = vec2(bounds.right - inset, bounds.bottom - inset);
+ shadowColor[vertexCount] = color;
+ shadowParams[vertexCount] = vec3(0, 0, distanceCorrection);
+ vertexCount++;
+ }
+}
+
+int getVertexCountForGeometry(const Geometry& shadowGeometry) {
+ if (shadowGeometry.fIsCircle) {
+ return circle_type_to_vert_count(shadowGeometry.fType);
+ }
+
+ return rrect_type_to_vert_count(shadowGeometry.fType);
+}
+
+int getIndexCountForGeometry(const Geometry& shadowGeometry) {
+ if (shadowGeometry.fIsCircle) {
+ return circle_type_to_index_count(kStroke_RRectType == shadowGeometry.fType);
+ }
+
+ return rrect_type_to_index_count(shadowGeometry.fType);
+}
+
+void fillVerticesForGeometry(const Geometry& shadowGeometry, int /* vertexCount */,
+ Mesh::VertexArray<vec2> position, Mesh::VertexArray<vec4> shadowColor,
+ Mesh::VertexArray<vec3> shadowParams) {
+ if (shadowGeometry.fIsCircle) {
+ fillInCircleVerts(shadowGeometry, shadowGeometry.fIsStroked, position, shadowColor,
+ shadowParams);
+ } else {
+ fillInRRectVerts(shadowGeometry, position, shadowColor, shadowParams);
+ }
+}
+
+void fillIndicesForGeometry(const Geometry& shadowGeometry, int indexCount,
+ int startingVertexOffset, uint16_t* indices) {
+ if (shadowGeometry.fIsCircle) {
+ const uint16_t* primIndices = circle_type_to_indices(shadowGeometry.fIsStroked);
+ for (int i = 0; i < indexCount; ++i) {
+ indices[i] = primIndices[i] + startingVertexOffset;
+ }
+ } else {
+ const uint16_t* primIndices = rrect_type_to_indices(shadowGeometry.fType);
+ for (int i = 0; i < indexCount; ++i) {
+ indices[i] = primIndices[i] + startingVertexOffset;
+ }
+ }
+}
+
+inline void GetSpotParams(float occluderZ, float lightX, float lightY, float lightZ,
+ float lightRadius, float& blurRadius, float& scale, vec2& translate) {
+ float zRatio = divide_and_pin(occluderZ, lightZ - occluderZ, 0.0f, 0.95f);
+ blurRadius = lightRadius * zRatio;
+ scale = divide_and_pin(lightZ, lightZ - occluderZ, 1.0f, 1.95f);
+ translate.x = -zRatio * lightX;
+ translate.y = -zRatio * lightY;
+}
+
+static std::unique_ptr<Geometry> getShadowGeometry(const vec4& color, const FloatRect& devRect,
+ float devRadius, float blurRadius,
+ float insetWidth) {
+ // An insetWidth > 1/2 rect width or height indicates a simple fill.
+ const bool isCircle = ((devRadius >= devRect.getWidth()) && (devRadius >= devRect.getHeight()));
+
+ FloatRect bounds = devRect;
+ float innerRadius = 0.0f;
+ float outerRadius = devRadius;
+ float umbraInset;
+
+ RRectType type = kFill_RRectType;
+ if (isCircle) {
+ umbraInset = 0;
+ } else {
+ umbraInset = std::max(outerRadius, blurRadius);
+ }
+
+ // If stroke is greater than width or height, this is still a fill,
+ // otherwise we compute stroke params.
+ if (isCircle) {
+ innerRadius = devRadius - insetWidth;
+ type = innerRadius > 0 ? kStroke_RRectType : kFill_RRectType;
+ } else {
+ if (insetWidth <= 0.5f * std::min(devRect.getWidth(), devRect.getHeight())) {
+ // We don't worry about a real inner radius, we just need to know if we
+ // need to create overstroke vertices.
+ innerRadius = std::max(insetWidth - umbraInset, 0.0f);
+ type = innerRadius > 0 ? kOverstroke_RRectType : kStroke_RRectType;
+ }
+ }
+ const bool isStroked = (kStroke_RRectType == type);
+ return std::make_unique<Geometry>(Geometry{color, outerRadius, umbraInset, innerRadius,
+ blurRadius, bounds, type, isCircle, isStroked});
+}
+
+std::unique_ptr<Geometry> getAmbientShadowGeometry(const FloatRect& casterRect,
+ float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent,
+ const vec4& ambientColor) {
+ float devSpaceInsetWidth = AmbientBlurRadius(casterZ);
+ const float umbraRecipAlpha = AmbientRecipAlpha(casterZ);
+ const float devSpaceAmbientBlur = devSpaceInsetWidth * umbraRecipAlpha;
+
+ // Outset the shadow rrect to the border of the penumbra
+ float ambientPathOutset = devSpaceInsetWidth;
+ FloatRect outsetRect(casterRect);
+ outsetRect.left -= ambientPathOutset;
+ outsetRect.top -= ambientPathOutset;
+ outsetRect.right += ambientPathOutset;
+ outsetRect.bottom += ambientPathOutset;
+
+ float outsetRad = casterCornerRadius + ambientPathOutset;
+ if (casterIsTranslucent) {
+ // set a large inset to force a fill
+ devSpaceInsetWidth = outsetRect.getWidth();
+ }
+
+ return getShadowGeometry(ambientColor, outsetRect, std::abs(outsetRad), devSpaceAmbientBlur,
+ std::abs(devSpaceInsetWidth));
+}
+
+std::unique_ptr<Geometry> getSpotShadowGeometry(const FloatRect& casterRect,
+ float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent, const vec4& spotColor,
+ const vec3& lightPosition, float lightRadius) {
+ float devSpaceSpotBlur;
+ float spotScale;
+ vec2 spotOffset;
+ GetSpotParams(casterZ, lightPosition.x, lightPosition.y, lightPosition.z, lightRadius,
+ devSpaceSpotBlur, spotScale, spotOffset);
+ // handle scale of radius due to CTM
+ const float srcSpaceSpotBlur = devSpaceSpotBlur;
+
+ // Adjust translate for the effect of the scale.
+ spotOffset.x += spotScale;
+ spotOffset.y += spotScale;
+
+ // Compute the transformed shadow rect
+ ui::Transform shadowTransform;
+ shadowTransform.set(spotOffset.x, spotOffset.y);
+ shadowTransform.set(spotScale, 0, 0, spotScale);
+ FloatRect spotShadowRect = shadowTransform.transform(casterRect);
+ float spotShadowRadius = casterCornerRadius * spotScale;
+
+ // Compute the insetWidth
+ float blurOutset = srcSpaceSpotBlur;
+ float insetWidth = blurOutset;
+ if (casterIsTranslucent) {
+ // If transparent, just do a fill
+ insetWidth += spotShadowRect.getWidth();
+ } else {
+ // For shadows, instead of using a stroke we specify an inset from the penumbra
+ // border. We want to extend this inset area so that it meets up with the caster
+ // geometry. The inset geometry will by default already be inset by the blur width.
+ //
+ // We compare the min and max corners inset by the radius between the original
+ // rrect and the shadow rrect. The distance between the two plus the difference
+ // between the scaled radius and the original radius gives the distance from the
+ // transformed shadow shape to the original shape in that corner. The max
+ // of these gives the maximum distance we need to cover.
+ //
+ // Since we are outsetting by 1/2 the blur distance, we just add the maxOffset to
+ // that to get the full insetWidth.
+ float maxOffset;
+ if (casterCornerRadius <= 0.f) {
+ // Manhattan distance works better for rects
+ maxOffset = std::max(std::max(std::abs(spotShadowRect.left - casterRect.left),
+ std::abs(spotShadowRect.top - casterRect.top)),
+ std::max(std::abs(spotShadowRect.right - casterRect.right),
+ std::abs(spotShadowRect.bottom - casterRect.bottom)));
+ } else {
+ float dr = spotShadowRadius - casterCornerRadius;
+ vec2 upperLeftOffset = vec2(spotShadowRect.left - casterRect.left + dr,
+ spotShadowRect.top - casterRect.top + dr);
+ vec2 lowerRightOffset = vec2(spotShadowRect.right - casterRect.right - dr,
+ spotShadowRect.bottom - casterRect.bottom - dr);
+ maxOffset = sqrt(std::max(dot(upperLeftOffset, lowerRightOffset),
+ dot(lowerRightOffset, lowerRightOffset))) +
+ dr;
+ }
+ insetWidth += std::max(blurOutset, maxOffset);
+ }
+
+ // Outset the shadow rrect to the border of the penumbra
+ spotShadowRadius += blurOutset;
+ spotShadowRect.left -= blurOutset;
+ spotShadowRect.top -= blurOutset;
+ spotShadowRect.right += blurOutset;
+ spotShadowRect.bottom += blurOutset;
+
+ return getShadowGeometry(spotColor, spotShadowRect, std::abs(spotShadowRadius),
+ 2.0f * devSpaceSpotBlur, std::abs(insetWidth));
+}
+
+void fillShadowTextureData(uint8_t* data, size_t shadowTextureWidth) {
+ for (int i = 0; i < shadowTextureWidth; i++) {
+ const float d = 1 - i / ((shadowTextureWidth * 1.0f) - 1.0f);
+ data[i] = static_cast<uint8_t>((exp(-4.0f * d * d) - 0.018f) * 255);
+ }
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLSkiaShadowPort.h b/libs/renderengine/gl/GLSkiaShadowPort.h
new file mode 100644
index 0000000..912c8bb
--- /dev/null
+++ b/libs/renderengine/gl/GLSkiaShadowPort.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <math/vec4.h>
+#include <renderengine/Mesh.h>
+#include <ui/Rect.h>
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+/**
+ * The shadow geometry logic and vertex generation code has been ported from skia shadow
+ * fast path OpenGL implementation to draw shadows around rects and rounded rects including
+ * circles.
+ *
+ * path: skia/src/gpu/GrRenderTargetContext.cpp GrRenderTargetContext::drawFastShadow
+ *
+ * Modifications made:
+ * - Switched to using std lib math functions
+ * - Fall off function is implemented in vertex shader rather than a shadow texture
+ * - Removed transformations applied on the caster rect since the caster will be in local
+ * coordinate space and will be transformed by the vertex shader.
+ */
+
+enum RRectType {
+ kFill_RRectType,
+ kStroke_RRectType,
+ kOverstroke_RRectType,
+};
+
+struct Geometry {
+ vec4 fColor;
+ float fOuterRadius;
+ float fUmbraInset;
+ float fInnerRadius;
+ float fBlurRadius;
+ FloatRect fDevBounds;
+ RRectType fType;
+ bool fIsCircle;
+ bool fIsStroked;
+};
+
+std::unique_ptr<Geometry> getSpotShadowGeometry(const FloatRect& casterRect,
+ float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent, const vec4& spotColor,
+ const vec3& lightPosition, float lightRadius);
+
+std::unique_ptr<Geometry> getAmbientShadowGeometry(const FloatRect& casterRect,
+ float casterCornerRadius, float casterZ,
+ bool casterIsTranslucent,
+ const vec4& ambientColor);
+
+int getVertexCountForGeometry(const Geometry& shadowGeometry);
+
+int getIndexCountForGeometry(const Geometry& shadowGeometry);
+
+void fillVerticesForGeometry(const Geometry& shadowGeometry, int vertexCount,
+ Mesh::VertexArray<vec2> position, Mesh::VertexArray<vec4> shadowColor,
+ Mesh::VertexArray<vec3> shadowParams);
+
+void fillIndicesForGeometry(const Geometry& shadowGeometry, int indexCount,
+ int startingVertexOffset, uint16_t* indices);
+
+/**
+ * Maps shadow geometry 'alpha' varying (1 for darkest, 0 for transparent) to
+ * darkness at that spot. Values are determined by an exponential falloff
+ * function provided by UX.
+ *
+ * The texture is used for quick lookup in theshadow shader.
+ *
+ * textureData - filled with shadow texture data that needs to be at least of
+ * size textureWidth
+ *
+ * textureWidth - width of the texture, height is always 1
+ */
+void fillShadowTextureData(uint8_t* textureData, size_t textureWidth);
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLVertexBuffer.cpp b/libs/renderengine/gl/GLVertexBuffer.cpp
new file mode 100644
index 0000000..e50c471
--- /dev/null
+++ b/libs/renderengine/gl/GLVertexBuffer.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "GLVertexBuffer.h"
+
+#include <GLES/gl.h>
+#include <GLES2/gl2.h>
+#include <nativebase/nativebase.h>
+#include <utils/Trace.h>
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+GLVertexBuffer::GLVertexBuffer() {
+ glGenBuffers(1, &mBufferName);
+}
+
+GLVertexBuffer::~GLVertexBuffer() {
+ glDeleteBuffers(1, &mBufferName);
+}
+
+void GLVertexBuffer::allocateBuffers(const GLfloat data[], const GLuint size) {
+ ATRACE_CALL();
+ bind();
+ glBufferData(GL_ARRAY_BUFFER, size * sizeof(GLfloat), data, GL_STATIC_DRAW);
+ unbind();
+}
+
+void GLVertexBuffer::bind() const {
+ glBindBuffer(GL_ARRAY_BUFFER, mBufferName);
+}
+
+void GLVertexBuffer::unbind() const {
+ glBindBuffer(GL_ARRAY_BUFFER, 0);
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/GLVertexBuffer.h b/libs/renderengine/gl/GLVertexBuffer.h
new file mode 100644
index 0000000..c0fd0c1
--- /dev/null
+++ b/libs/renderengine/gl/GLVertexBuffer.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <cstdint>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GLESRenderEngine;
+
+class GLVertexBuffer {
+public:
+ explicit GLVertexBuffer();
+ ~GLVertexBuffer();
+
+ void allocateBuffers(const GLfloat data[], const GLuint size);
+ uint32_t getBufferName() const { return mBufferName; }
+ void bind() const;
+ void unbind() const;
+
+private:
+ uint32_t mBufferName;
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/Program.cpp b/libs/renderengine/gl/Program.cpp
index fe9d909..f4fbf35 100644
--- a/libs/renderengine/gl/Program.cpp
+++ b/libs/renderengine/gl/Program.cpp
@@ -37,6 +37,8 @@
glBindAttribLocation(programId, position, "position");
glBindAttribLocation(programId, texCoords, "texCoords");
glBindAttribLocation(programId, cropCoords, "cropCoords");
+ glBindAttribLocation(programId, shadowColor, "shadowColor");
+ glBindAttribLocation(programId, shadowParams, "shadowParams");
glLinkProgram(programId);
GLint status;
@@ -65,6 +67,8 @@
mSamplerLoc = glGetUniformLocation(programId, "sampler");
mColorLoc = glGetUniformLocation(programId, "color");
mDisplayMaxLuminanceLoc = glGetUniformLocation(programId, "displayMaxLuminance");
+ mMaxMasteringLuminanceLoc = glGetUniformLocation(programId, "maxMasteringLuminance");
+ mMaxContentLuminanceLoc = glGetUniformLocation(programId, "maxContentLuminance");
mInputTransformMatrixLoc = glGetUniformLocation(programId, "inputTransformMatrix");
mOutputTransformMatrixLoc = glGetUniformLocation(programId, "outputTransformMatrix");
mCornerRadiusLoc = glGetUniformLocation(programId, "cornerRadius");
@@ -138,6 +142,12 @@
if (mDisplayMaxLuminanceLoc >= 0) {
glUniform1f(mDisplayMaxLuminanceLoc, desc.displayMaxLuminance);
}
+ if (mMaxMasteringLuminanceLoc >= 0) {
+ glUniform1f(mMaxMasteringLuminanceLoc, desc.maxMasteringLuminance);
+ }
+ if (mMaxContentLuminanceLoc >= 0) {
+ glUniform1f(mMaxContentLuminanceLoc, desc.maxContentLuminance);
+ }
if (mCornerRadiusLoc >= 0) {
glUniform1f(mCornerRadiusLoc, desc.cornerRadius);
}
diff --git a/libs/renderengine/gl/Program.h b/libs/renderengine/gl/Program.h
index bc9cf08..fc3755e 100644
--- a/libs/renderengine/gl/Program.h
+++ b/libs/renderengine/gl/Program.h
@@ -44,7 +44,13 @@
texCoords = 1,
/* Crop coordinates, in pixels */
- cropCoords = 2
+ cropCoords = 2,
+
+ /* Shadow color */
+ shadowColor = 3,
+
+ /* Shadow params */
+ shadowParams = 4,
};
Program(const ProgramCache::Key& needs, const char* vertex, const char* fragment);
@@ -90,6 +96,10 @@
/* location of display luminance uniform */
GLint mDisplayMaxLuminanceLoc;
+ /* location of max mastering luminance uniform */
+ GLint mMaxMasteringLuminanceLoc;
+ /* location of max content luminance uniform */
+ GLint mMaxContentLuminanceLoc;
/* location of transform matrix */
GLint mInputTransformMatrixLoc;
diff --git a/libs/renderengine/gl/ProgramCache.cpp b/libs/renderengine/gl/ProgramCache.cpp
index d242677..3ae35ec 100644
--- a/libs/renderengine/gl/ProgramCache.cpp
+++ b/libs/renderengine/gl/ProgramCache.cpp
@@ -77,9 +77,38 @@
return f;
}
-void ProgramCache::primeCache(EGLContext context, bool useColorManagement) {
+void ProgramCache::primeCache(
+ EGLContext context, bool useColorManagement, bool toneMapperShaderOnly) {
auto& cache = mCaches[context];
uint32_t shaderCount = 0;
+
+ if (toneMapperShaderOnly) {
+ Key shaderKey;
+ // base settings used by HDR->SDR tonemap only
+ shaderKey.set(Key::BLEND_MASK | Key::INPUT_TRANSFORM_MATRIX_MASK |
+ Key::OUTPUT_TRANSFORM_MATRIX_MASK | Key::OUTPUT_TF_MASK |
+ Key::OPACITY_MASK | Key::ALPHA_MASK |
+ Key::ROUNDED_CORNERS_MASK | Key::TEXTURE_MASK,
+ Key::BLEND_NORMAL | Key::INPUT_TRANSFORM_MATRIX_ON |
+ Key::OUTPUT_TRANSFORM_MATRIX_ON | Key::OUTPUT_TF_SRGB |
+ Key::OPACITY_OPAQUE | Key::ALPHA_EQ_ONE |
+ Key::ROUNDED_CORNERS_OFF | Key::TEXTURE_EXT);
+ for (int i = 0; i < 4; i++) {
+ // Cache input transfer for HLG & ST2084
+ shaderKey.set(Key::INPUT_TF_MASK, (i & 1) ?
+ Key::INPUT_TF_HLG : Key::INPUT_TF_ST2084);
+
+ // Cache Y410 input on or off
+ shaderKey.set(Key::Y410_BT2020_MASK, (i & 2) ?
+ Key::Y410_BT2020_ON : Key::Y410_BT2020_OFF);
+ if (cache.count(shaderKey) == 0) {
+ cache.emplace(shaderKey, generateProgram(shaderKey));
+ shaderCount++;
+ }
+ }
+ return;
+ }
+
uint32_t keyMask = Key::BLEND_MASK | Key::OPACITY_MASK | Key::ALPHA_MASK | Key::TEXTURE_MASK
| Key::ROUNDED_CORNERS_MASK;
// Prime the cache for all combinations of the above masks,
@@ -145,16 +174,15 @@
.set(Key::OPACITY_MASK,
description.isOpaque ? Key::OPACITY_OPAQUE : Key::OPACITY_TRANSLUCENT)
.set(Key::Key::INPUT_TRANSFORM_MATRIX_MASK,
- description.hasInputTransformMatrix()
- ? Key::INPUT_TRANSFORM_MATRIX_ON : Key::INPUT_TRANSFORM_MATRIX_OFF)
+ description.hasInputTransformMatrix() ? Key::INPUT_TRANSFORM_MATRIX_ON
+ : Key::INPUT_TRANSFORM_MATRIX_OFF)
.set(Key::Key::OUTPUT_TRANSFORM_MATRIX_MASK,
description.hasOutputTransformMatrix() || description.hasColorMatrix()
? Key::OUTPUT_TRANSFORM_MATRIX_ON
: Key::OUTPUT_TRANSFORM_MATRIX_OFF)
.set(Key::ROUNDED_CORNERS_MASK,
- description.cornerRadius > 0
- ? Key::ROUNDED_CORNERS_ON : Key::ROUNDED_CORNERS_OFF);
-
+ description.cornerRadius > 0 ? Key::ROUNDED_CORNERS_ON : Key::ROUNDED_CORNERS_OFF)
+ .set(Key::SHADOW_MASK, description.drawShadows ? Key::SHADOW_ON : Key::SHADOW_OFF);
needs.set(Key::Y410_BT2020_MASK,
description.isY410BT2020 ? Key::Y410_BT2020_ON : Key::Y410_BT2020_OFF);
@@ -310,9 +338,9 @@
default:
fs << R"__SHADER__(
highp vec3 ToneMap(highp vec3 color) {
- const float maxMasteringLumi = 1000.0;
- const float maxContentLumi = 1000.0;
- const float maxInLumi = min(maxMasteringLumi, maxContentLumi);
+ float maxMasteringLumi = maxMasteringLuminance;
+ float maxContentLumi = maxContentLuminance;
+ float maxInLumi = min(maxMasteringLumi, maxContentLumi);
float maxOutLumi = displayMaxLuminance;
float nits = color.y;
@@ -522,7 +550,7 @@
String8 ProgramCache::generateVertexShader(const Key& needs) {
Formatter vs;
- if (needs.isTexturing()) {
+ if (needs.hasTextureCoords()) {
vs << "attribute vec4 texCoords;"
<< "varying vec2 outTexCoords;";
}
@@ -530,16 +558,26 @@
vs << "attribute lowp vec4 cropCoords;";
vs << "varying lowp vec2 outCropCoords;";
}
+ if (needs.drawShadows()) {
+ vs << "attribute lowp vec4 shadowColor;";
+ vs << "varying lowp vec4 outShadowColor;";
+ vs << "attribute lowp vec4 shadowParams;";
+ vs << "varying lowp vec3 outShadowParams;";
+ }
vs << "attribute vec4 position;"
<< "uniform mat4 projection;"
<< "uniform mat4 texture;"
<< "void main(void) {" << indent << "gl_Position = projection * position;";
- if (needs.isTexturing()) {
+ if (needs.hasTextureCoords()) {
vs << "outTexCoords = (texture * texCoords).st;";
}
if (needs.hasRoundedCorners()) {
vs << "outCropCoords = cropCoords.st;";
}
+ if (needs.drawShadows()) {
+ vs << "outShadowColor = shadowColor;";
+ vs << "outShadowParams = shadowParams.xyz;";
+ }
vs << dedent << "}";
return vs.getString();
}
@@ -554,11 +592,13 @@
fs << "precision mediump float;";
if (needs.getTextureTarget() == Key::TEXTURE_EXT) {
- fs << "uniform samplerExternalOES sampler;"
- << "varying vec2 outTexCoords;";
+ fs << "uniform samplerExternalOES sampler;";
} else if (needs.getTextureTarget() == Key::TEXTURE_2D) {
- fs << "uniform sampler2D sampler;"
- << "varying vec2 outTexCoords;";
+ fs << "uniform sampler2D sampler;";
+ }
+
+ if (needs.hasTextureCoords()) {
+ fs << "varying vec2 outTexCoords;";
}
if (needs.hasRoundedCorners()) {
@@ -585,6 +625,24 @@
)__SHADER__";
}
+ if (needs.drawShadows()) {
+ fs << R"__SHADER__(
+ varying lowp vec4 outShadowColor;
+ varying lowp vec3 outShadowParams;
+
+ /**
+ * Returns the shadow color.
+ */
+ vec4 getShadowColor()
+ {
+ lowp float d = length(outShadowParams.xy);
+ vec2 uv = vec2(outShadowParams.z * (1.0 - d), 0.5);
+ lowp float factor = texture2D(sampler, uv).a;
+ return outShadowColor * factor;
+ }
+ )__SHADER__";
+ }
+
if (needs.getTextureTarget() == Key::TEXTURE_OFF || needs.hasAlpha()) {
fs << "uniform vec4 color;";
}
@@ -604,9 +662,10 @@
}
if (needs.hasTransformMatrix() || (needs.getInputTF() != needs.getOutputTF())) {
- // Currently, display maximum luminance is needed when doing tone mapping.
if (needs.needsToneMapping()) {
fs << "uniform float displayMaxLuminance;";
+ fs << "uniform float maxMasteringLuminance;";
+ fs << "uniform float maxContentLuminance;";
}
if (needs.hasInputTransformMatrix()) {
@@ -647,25 +706,29 @@
}
fs << "void main(void) {" << indent;
- if (needs.isTexturing()) {
- fs << "gl_FragColor = texture2D(sampler, outTexCoords);";
- if (needs.isY410BT2020()) {
- fs << "gl_FragColor.rgb = convertY410BT2020(gl_FragColor.rgb);";
- }
+ if (needs.drawShadows()) {
+ fs << "gl_FragColor = getShadowColor();";
} else {
- fs << "gl_FragColor.rgb = color.rgb;";
- fs << "gl_FragColor.a = 1.0;";
- }
- if (needs.isOpaque()) {
- fs << "gl_FragColor.a = 1.0;";
- }
- if (needs.hasAlpha()) {
- // modulate the current alpha value with alpha set
- if (needs.isPremultiplied()) {
- // ... and the color too if we're premultiplied
- fs << "gl_FragColor *= color.a;";
+ if (needs.isTexturing()) {
+ fs << "gl_FragColor = texture2D(sampler, outTexCoords);";
+ if (needs.isY410BT2020()) {
+ fs << "gl_FragColor.rgb = convertY410BT2020(gl_FragColor.rgb);";
+ }
} else {
- fs << "gl_FragColor.a *= color.a;";
+ fs << "gl_FragColor.rgb = color.rgb;";
+ fs << "gl_FragColor.a = 1.0;";
+ }
+ if (needs.isOpaque()) {
+ fs << "gl_FragColor.a = 1.0;";
+ }
+ if (needs.hasAlpha()) {
+ // modulate the current alpha value with alpha set
+ if (needs.isPremultiplied()) {
+ // ... and the color too if we're premultiplied
+ fs << "gl_FragColor *= color.a;";
+ } else {
+ fs << "gl_FragColor.a *= color.a;";
+ }
}
}
diff --git a/libs/renderengine/gl/ProgramCache.h b/libs/renderengine/gl/ProgramCache.h
index 400ad74..901e631 100644
--- a/libs/renderengine/gl/ProgramCache.h
+++ b/libs/renderengine/gl/ProgramCache.h
@@ -112,6 +112,11 @@
Y410_BT2020_MASK = 1 << Y410_BT2020_SHIFT,
Y410_BT2020_OFF = 0 << Y410_BT2020_SHIFT,
Y410_BT2020_ON = 1 << Y410_BT2020_SHIFT,
+
+ SHADOW_SHIFT = 13,
+ SHADOW_MASK = 1 << SHADOW_SHIFT,
+ SHADOW_OFF = 0 << SHADOW_SHIFT,
+ SHADOW_ON = 1 << SHADOW_SHIFT,
};
inline Key() : mKey(0) {}
@@ -123,6 +128,7 @@
}
inline bool isTexturing() const { return (mKey & TEXTURE_MASK) != TEXTURE_OFF; }
+ inline bool hasTextureCoords() const { return isTexturing() && !drawShadows(); }
inline int getTextureTarget() const { return (mKey & TEXTURE_MASK); }
inline bool isPremultiplied() const { return (mKey & BLEND_MASK) == BLEND_PREMULT; }
inline bool isOpaque() const { return (mKey & OPACITY_MASK) == OPACITY_OPAQUE; }
@@ -130,6 +136,7 @@
inline bool hasRoundedCorners() const {
return (mKey & ROUNDED_CORNERS_MASK) == ROUNDED_CORNERS_ON;
}
+ inline bool drawShadows() const { return (mKey & SHADOW_MASK) == SHADOW_ON; }
inline bool hasInputTransformMatrix() const {
return (mKey & INPUT_TRANSFORM_MATRIX_MASK) == INPUT_TRANSFORM_MATRIX_ON;
}
@@ -179,7 +186,7 @@
~ProgramCache() = default;
// Generate shaders to populate the cache
- void primeCache(const EGLContext context, bool useColorManagement);
+ void primeCache(const EGLContext context, bool useColorManagement, bool toneMapperShaderOnly);
size_t getSize(const EGLContext context) { return mCaches[context].size(); }
diff --git a/libs/renderengine/gl/filters/BlurFilter.cpp b/libs/renderengine/gl/filters/BlurFilter.cpp
new file mode 100644
index 0000000..19f18c0
--- /dev/null
+++ b/libs/renderengine/gl/filters/BlurFilter.cpp
@@ -0,0 +1,268 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "BlurFilter.h"
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES3/gl3.h>
+#include <GLES3/gl3ext.h>
+#include <ui/GraphicTypes.h>
+#include <cstdint>
+
+#include <utils/Trace.h>
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+BlurFilter::BlurFilter(GLESRenderEngine& engine)
+ : mEngine(engine),
+ mCompositionFbo(engine),
+ mPingFbo(engine),
+ mPongFbo(engine),
+ mMixProgram(engine),
+ mBlurProgram(engine) {
+ mMixProgram.compile(getVertexShader(), getMixFragShader());
+ mMPosLoc = mMixProgram.getAttributeLocation("aPosition");
+ mMUvLoc = mMixProgram.getAttributeLocation("aUV");
+ mMTextureLoc = mMixProgram.getUniformLocation("uTexture");
+ mMCompositionTextureLoc = mMixProgram.getUniformLocation("uCompositionTexture");
+ mMMixLoc = mMixProgram.getUniformLocation("uMix");
+
+ mBlurProgram.compile(getVertexShader(), getFragmentShader());
+ mBPosLoc = mBlurProgram.getAttributeLocation("aPosition");
+ mBUvLoc = mBlurProgram.getAttributeLocation("aUV");
+ mBTextureLoc = mBlurProgram.getUniformLocation("uTexture");
+ mBOffsetLoc = mBlurProgram.getUniformLocation("uOffset");
+
+ static constexpr auto size = 2.0f;
+ static constexpr auto translation = 1.0f;
+ const GLfloat vboData[] = {
+ // Vertex data
+ translation - size, -translation - size,
+ translation - size, -translation + size,
+ translation + size, -translation + size,
+ // UV data
+ 0.0f, 0.0f - translation,
+ 0.0f, size - translation,
+ size, size - translation
+ };
+ mMeshBuffer.allocateBuffers(vboData, 12 /* size */);
+}
+
+status_t BlurFilter::setAsDrawTarget(const DisplaySettings& display, uint32_t radius) {
+ ATRACE_NAME("BlurFilter::setAsDrawTarget");
+ mRadius = radius;
+ mDisplayX = display.physicalDisplay.left;
+ mDisplayY = display.physicalDisplay.top;
+
+ if (mDisplayWidth < display.physicalDisplay.width() ||
+ mDisplayHeight < display.physicalDisplay.height()) {
+ ATRACE_NAME("BlurFilter::allocatingTextures");
+
+ mDisplayWidth = display.physicalDisplay.width();
+ mDisplayHeight = display.physicalDisplay.height();
+ mCompositionFbo.allocateBuffers(mDisplayWidth, mDisplayHeight);
+
+ const uint32_t fboWidth = floorf(mDisplayWidth * kFboScale);
+ const uint32_t fboHeight = floorf(mDisplayHeight * kFboScale);
+ mPingFbo.allocateBuffers(fboWidth, fboHeight);
+ mPongFbo.allocateBuffers(fboWidth, fboHeight);
+
+ if (mPingFbo.getStatus() != GL_FRAMEBUFFER_COMPLETE) {
+ ALOGE("Invalid ping buffer");
+ return mPingFbo.getStatus();
+ }
+ if (mPongFbo.getStatus() != GL_FRAMEBUFFER_COMPLETE) {
+ ALOGE("Invalid pong buffer");
+ return mPongFbo.getStatus();
+ }
+ if (mCompositionFbo.getStatus() != GL_FRAMEBUFFER_COMPLETE) {
+ ALOGE("Invalid composition buffer");
+ return mCompositionFbo.getStatus();
+ }
+ if (!mBlurProgram.isValid()) {
+ ALOGE("Invalid shader");
+ return GL_INVALID_OPERATION;
+ }
+ }
+
+ mCompositionFbo.bind();
+ glViewport(0, 0, mCompositionFbo.getBufferWidth(), mCompositionFbo.getBufferHeight());
+ return NO_ERROR;
+}
+
+void BlurFilter::drawMesh(GLuint uv, GLuint position) {
+
+ glEnableVertexAttribArray(uv);
+ glEnableVertexAttribArray(position);
+ mMeshBuffer.bind();
+ glVertexAttribPointer(position, 2 /* size */, GL_FLOAT, GL_FALSE,
+ 2 * sizeof(GLfloat) /* stride */, 0 /* offset */);
+ glVertexAttribPointer(uv, 2 /* size */, GL_FLOAT, GL_FALSE, 0 /* stride */,
+ (GLvoid*)(6 * sizeof(GLfloat)) /* offset */);
+ mMeshBuffer.unbind();
+
+ // draw mesh
+ glDrawArrays(GL_TRIANGLES, 0 /* first */, 3 /* count */);
+}
+
+status_t BlurFilter::prepare() {
+ ATRACE_NAME("BlurFilter::prepare");
+
+ // Kawase is an approximation of Gaussian, but it behaves differently from it.
+ // A radius transformation is required for approximating them, and also to introduce
+ // non-integer steps, necessary to smoothly interpolate large radii.
+ const auto radius = mRadius / 6.0f;
+
+ // Calculate how many passes we'll do, based on the radius.
+ // Too many passes will make the operation expensive.
+ const auto passes = min(kMaxPasses, (uint32_t)ceil(radius));
+
+ const float radiusByPasses = radius / (float)passes;
+ const float stepX = radiusByPasses / (float)mCompositionFbo.getBufferWidth();
+ const float stepY = radiusByPasses / (float)mCompositionFbo.getBufferHeight();
+
+ // Let's start by downsampling and blurring the composited frame simultaneously.
+ mBlurProgram.useProgram();
+ glActiveTexture(GL_TEXTURE0);
+ glUniform1i(mBTextureLoc, 0);
+ glBindTexture(GL_TEXTURE_2D, mCompositionFbo.getTextureName());
+ glUniform2f(mBOffsetLoc, stepX, stepY);
+ glViewport(0, 0, mPingFbo.getBufferWidth(), mPingFbo.getBufferHeight());
+ mPingFbo.bind();
+ drawMesh(mBUvLoc, mBPosLoc);
+
+ // And now we'll ping pong between our textures, to accumulate the result of various offsets.
+ GLFramebuffer* read = &mPingFbo;
+ GLFramebuffer* draw = &mPongFbo;
+ glViewport(0, 0, draw->getBufferWidth(), draw->getBufferHeight());
+ for (auto i = 1; i < passes; i++) {
+ ATRACE_NAME("BlurFilter::renderPass");
+ draw->bind();
+
+ glBindTexture(GL_TEXTURE_2D, read->getTextureName());
+ glUniform2f(mBOffsetLoc, stepX * i, stepY * i);
+
+ drawMesh(mBUvLoc, mBPosLoc);
+
+ // Swap buffers for next iteration
+ auto tmp = draw;
+ draw = read;
+ read = tmp;
+ }
+ mLastDrawTarget = read;
+
+ return NO_ERROR;
+}
+
+status_t BlurFilter::render(bool multiPass) {
+ ATRACE_NAME("BlurFilter::render");
+
+ // Now let's scale our blur up. It will be interpolated with the larger composited
+ // texture for the first frames, to hide downscaling artifacts.
+ GLfloat mix = fmin(1.0, mRadius / kMaxCrossFadeRadius);
+
+ // When doing multiple passes, we cannot try to read mCompositionFbo, given that we'll
+ // be writing onto it. Let's disable the crossfade, otherwise we'd need 1 extra frame buffer,
+ // as large as the screen size.
+ if (mix >= 1 || multiPass) {
+ mLastDrawTarget->bindAsReadBuffer();
+ glBlitFramebuffer(0, 0, mLastDrawTarget->getBufferWidth(),
+ mLastDrawTarget->getBufferHeight(), mDisplayX, mDisplayY, mDisplayWidth,
+ mDisplayHeight, GL_COLOR_BUFFER_BIT, GL_LINEAR);
+ return NO_ERROR;
+ }
+
+ mMixProgram.useProgram();
+ glUniform1f(mMMixLoc, mix);
+ glActiveTexture(GL_TEXTURE0);
+ glBindTexture(GL_TEXTURE_2D, mLastDrawTarget->getTextureName());
+ glUniform1i(mMTextureLoc, 0);
+ glActiveTexture(GL_TEXTURE1);
+ glBindTexture(GL_TEXTURE_2D, mCompositionFbo.getTextureName());
+ glUniform1i(mMCompositionTextureLoc, 1);
+
+ drawMesh(mMUvLoc, mMPosLoc);
+
+ glUseProgram(0);
+ glActiveTexture(GL_TEXTURE0);
+ mEngine.checkErrors("Drawing blur mesh");
+ return NO_ERROR;
+}
+
+string BlurFilter::getVertexShader() const {
+ return R"SHADER(#version 310 es
+ precision mediump float;
+
+ in vec2 aPosition;
+ in highp vec2 aUV;
+ out highp vec2 vUV;
+
+ void main() {
+ vUV = aUV;
+ gl_Position = vec4(aPosition, 0.0, 1.0);
+ }
+ )SHADER";
+}
+
+string BlurFilter::getFragmentShader() const {
+ return R"SHADER(#version 310 es
+ precision mediump float;
+
+ uniform sampler2D uTexture;
+ uniform vec2 uOffset;
+
+ in highp vec2 vUV;
+ out vec4 fragColor;
+
+ void main() {
+ fragColor = texture(uTexture, vUV, 0.0);
+ fragColor += texture(uTexture, vUV + vec2( uOffset.x, uOffset.y), 0.0);
+ fragColor += texture(uTexture, vUV + vec2( uOffset.x, -uOffset.y), 0.0);
+ fragColor += texture(uTexture, vUV + vec2(-uOffset.x, uOffset.y), 0.0);
+ fragColor += texture(uTexture, vUV + vec2(-uOffset.x, -uOffset.y), 0.0);
+
+ fragColor = vec4(fragColor.rgb * 0.2, 1.0);
+ }
+ )SHADER";
+}
+
+string BlurFilter::getMixFragShader() const {
+ string shader = R"SHADER(#version 310 es
+ precision mediump float;
+
+ in highp vec2 vUV;
+ out vec4 fragColor;
+
+ uniform sampler2D uCompositionTexture;
+ uniform sampler2D uTexture;
+ uniform float uMix;
+
+ void main() {
+ vec4 blurred = texture(uTexture, vUV);
+ vec4 composition = texture(uCompositionTexture, vUV);
+ fragColor = mix(composition, blurred, uMix);
+ }
+ )SHADER";
+ return shader;
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/filters/BlurFilter.h b/libs/renderengine/gl/filters/BlurFilter.h
new file mode 100644
index 0000000..593a8fd
--- /dev/null
+++ b/libs/renderengine/gl/filters/BlurFilter.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <ui/GraphicTypes.h>
+#include "../GLESRenderEngine.h"
+#include "../GLFramebuffer.h"
+#include "../GLVertexBuffer.h"
+#include "GenericProgram.h"
+
+using namespace std;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+/**
+ * This is an implementation of a Kawase blur, as described in here:
+ * https://community.arm.com/cfs-file/__key/communityserver-blogs-components-weblogfiles/
+ * 00-00-00-20-66/siggraph2015_2D00_mmg_2D00_marius_2D00_notes.pdf
+ */
+class BlurFilter {
+public:
+ // Downsample FBO to improve performance
+ static constexpr float kFboScale = 0.25f;
+ // Maximum number of render passes
+ static constexpr uint32_t kMaxPasses = 4;
+ // To avoid downscaling artifacts, we interpolate the blurred fbo with the full composited
+ // image, up to this radius.
+ static constexpr float kMaxCrossFadeRadius = 30.0f;
+
+ explicit BlurFilter(GLESRenderEngine& engine);
+ virtual ~BlurFilter(){};
+
+ // Set up render targets, redirecting output to offscreen texture.
+ status_t setAsDrawTarget(const DisplaySettings&, uint32_t radius);
+ // Execute blur passes, rendering to offscreen texture.
+ status_t prepare();
+ // Render blur to the bound framebuffer (screen).
+ status_t render(bool multiPass);
+
+private:
+ uint32_t mRadius;
+ void drawMesh(GLuint uv, GLuint position);
+ string getVertexShader() const;
+ string getFragmentShader() const;
+ string getMixFragShader() const;
+
+ GLESRenderEngine& mEngine;
+ // Frame buffer holding the composited background.
+ GLFramebuffer mCompositionFbo;
+ // Frame buffers holding the blur passes.
+ GLFramebuffer mPingFbo;
+ GLFramebuffer mPongFbo;
+ uint32_t mDisplayWidth = 0;
+ uint32_t mDisplayHeight = 0;
+ uint32_t mDisplayX = 0;
+ uint32_t mDisplayY = 0;
+ // Buffer holding the final blur pass.
+ GLFramebuffer* mLastDrawTarget;
+
+ // VBO containing vertex and uv data of a fullscreen triangle.
+ GLVertexBuffer mMeshBuffer;
+
+ GenericProgram mMixProgram;
+ GLuint mMPosLoc;
+ GLuint mMUvLoc;
+ GLuint mMMixLoc;
+ GLuint mMTextureLoc;
+ GLuint mMCompositionTextureLoc;
+
+ GenericProgram mBlurProgram;
+ GLuint mBPosLoc;
+ GLuint mBUvLoc;
+ GLuint mBTextureLoc;
+ GLuint mBOffsetLoc;
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/filters/GenericProgram.cpp b/libs/renderengine/gl/filters/GenericProgram.cpp
new file mode 100644
index 0000000..bb35889
--- /dev/null
+++ b/libs/renderengine/gl/filters/GenericProgram.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GenericProgram.h"
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+GenericProgram::GenericProgram(GLESRenderEngine& engine) : mEngine(engine) {}
+
+GenericProgram::~GenericProgram() {
+ if (mVertexShaderHandle != 0) {
+ if (mProgramHandle != 0) {
+ glDetachShader(mProgramHandle, mVertexShaderHandle);
+ }
+ glDeleteShader(mVertexShaderHandle);
+ }
+
+ if (mFragmentShaderHandle != 0) {
+ if (mProgramHandle != 0) {
+ glDetachShader(mProgramHandle, mFragmentShaderHandle);
+ }
+ glDeleteShader(mFragmentShaderHandle);
+ }
+
+ if (mProgramHandle != 0) {
+ glDeleteProgram(mProgramHandle);
+ }
+}
+
+void GenericProgram::compile(string vertexShader, string fragmentShader) {
+ mVertexShaderHandle = compileShader(GL_VERTEX_SHADER, vertexShader);
+ mFragmentShaderHandle = compileShader(GL_FRAGMENT_SHADER, fragmentShader);
+ if (mVertexShaderHandle == 0 || mFragmentShaderHandle == 0) {
+ ALOGE("Aborting program creation.");
+ return;
+ }
+ mProgramHandle = createAndLink(mVertexShaderHandle, mFragmentShaderHandle);
+ mEngine.checkErrors("Linking program");
+}
+
+void GenericProgram::useProgram() const {
+ glUseProgram(mProgramHandle);
+}
+
+GLuint GenericProgram::compileShader(GLuint type, string src) const {
+ const GLuint shader = glCreateShader(type);
+ if (shader == 0) {
+ mEngine.checkErrors("Creating shader");
+ return 0;
+ }
+ const GLchar* charSrc = (const GLchar*)src.c_str();
+ glShaderSource(shader, 1, &charSrc, nullptr);
+ glCompileShader(shader);
+
+ GLint isCompiled = 0;
+ glGetShaderiv(shader, GL_COMPILE_STATUS, &isCompiled);
+ if (isCompiled == GL_FALSE) {
+ GLint maxLength = 0;
+ glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &maxLength);
+ string errorLog;
+ errorLog.reserve(maxLength);
+ glGetShaderInfoLog(shader, maxLength, &maxLength, errorLog.data());
+ glDeleteShader(shader);
+ ALOGE("Error compiling shader: %s", errorLog.c_str());
+ return 0;
+ }
+ return shader;
+}
+GLuint GenericProgram::createAndLink(GLuint vertexShader, GLuint fragmentShader) const {
+ const GLuint program = glCreateProgram();
+ mEngine.checkErrors("Creating program");
+
+ glAttachShader(program, vertexShader);
+ glAttachShader(program, fragmentShader);
+ glLinkProgram(program);
+ mEngine.checkErrors("Linking program");
+ return program;
+}
+
+GLuint GenericProgram::getUniformLocation(const string name) const {
+ if (mProgramHandle == 0) {
+ ALOGE("Can't get location of %s on an invalid program.", name.c_str());
+ return -1;
+ }
+ return glGetUniformLocation(mProgramHandle, (const GLchar*)name.c_str());
+}
+
+GLuint GenericProgram::getAttributeLocation(const string name) const {
+ if (mProgramHandle == 0) {
+ ALOGE("Can't get location of %s on an invalid program.", name.c_str());
+ return -1;
+ }
+ return glGetAttribLocation(mProgramHandle, (const GLchar*)name.c_str());
+}
+
+bool GenericProgram::isValid() const {
+ return mProgramHandle != 0;
+}
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android
diff --git a/libs/renderengine/gl/filters/GenericProgram.h b/libs/renderengine/gl/filters/GenericProgram.h
new file mode 100644
index 0000000..6da2a5a
--- /dev/null
+++ b/libs/renderengine/gl/filters/GenericProgram.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <ui/GraphicTypes.h>
+#include "../GLESRenderEngine.h"
+#include "../GLFramebuffer.h"
+
+using namespace std;
+
+namespace android {
+namespace renderengine {
+namespace gl {
+
+class GenericProgram {
+public:
+ explicit GenericProgram(GLESRenderEngine& renderEngine);
+ ~GenericProgram();
+ void compile(string vertexShader, string fragmentShader);
+ bool isValid() const;
+ void useProgram() const;
+ GLuint getAttributeLocation(const string name) const;
+ GLuint getUniformLocation(const string name) const;
+
+private:
+ GLuint compileShader(GLuint type, const string src) const;
+ GLuint createAndLink(GLuint vertexShader, GLuint fragmentShader) const;
+
+ GLESRenderEngine& mEngine;
+ GLuint mVertexShaderHandle = 0;
+ GLuint mFragmentShaderHandle = 0;
+ GLuint mProgramHandle = 0;
+};
+
+} // namespace gl
+} // namespace renderengine
+} // namespace android