Fix tone shift issue when switching between GPU and DPU composition.
- This fixes the issue that extended layer gets crushed in Adaptive
mode.
- When playing with extended HDR api in Adaptive mode, dim in gamma
space and convert transfer to gamma22 to get a
`OETF_gamma22(EOTF_sRGB(color))` SkRuntimeEffect.
Bug: 267530123
Test: play extended HDR on SilkFx and toggle between GPU/DPU
composition.
Change-Id: I029c86ea98969d736a72b9099d8e457006d9db38
diff --git a/libs/renderengine/skia/SkiaRenderEngine.cpp b/libs/renderengine/skia/SkiaRenderEngine.cpp
index e393fb2..8256dd8 100644
--- a/libs/renderengine/skia/SkiaRenderEngine.cpp
+++ b/libs/renderengine/skia/SkiaRenderEngine.cpp
@@ -264,14 +264,11 @@
SkAndroidFrameworkTraceUtil::setEnableTracing(tracingEnabled);
}
-SkiaRenderEngine::SkiaRenderEngine(
- RenderEngineType type,
- PixelFormat pixelFormat,
- bool useColorManagement,
- bool supportsBackgroundBlur) :
- RenderEngine(type),
- mDefaultPixelFormat(pixelFormat),
- mUseColorManagement(useColorManagement) {
+SkiaRenderEngine::SkiaRenderEngine(RenderEngineType type, PixelFormat pixelFormat,
+ bool useColorManagement, bool supportsBackgroundBlur)
+ : RenderEngine(type),
+ mDefaultPixelFormat(pixelFormat),
+ mUseColorManagement(useColorManagement) {
if (supportsBackgroundBlur) {
ALOGD("Background Blurs Enabled");
mBlurFilter = new KawaseBlurFilter();
@@ -507,15 +504,9 @@
}
if (parameters.requiresLinearEffect) {
- const ui::Dataspace inputDataspace = mUseColorManagement ? parameters.layer.sourceDataspace
- : ui::Dataspace::V0_SRGB_LINEAR;
- const ui::Dataspace outputDataspace = mUseColorManagement
- ? parameters.display.outputDataspace
- : ui::Dataspace::V0_SRGB_LINEAR;
-
auto effect =
- shaders::LinearEffect{.inputDataspace = inputDataspace,
- .outputDataspace = outputDataspace,
+ shaders::LinearEffect{.inputDataspace = parameters.layer.sourceDataspace,
+ .outputDataspace = parameters.outputDataSpace,
.undoPremultipliedAlpha = parameters.undoPremultipliedAlpha};
auto effectIter = mRuntimeEffects.find(effect);
@@ -678,9 +669,8 @@
// wait on the buffer to be ready to use prior to using it
waitFence(grContext, bufferFence);
- const ui::Dataspace dstDataspace =
- mUseColorManagement ? display.outputDataspace : ui::Dataspace::V0_SRGB_LINEAR;
- sk_sp<SkSurface> dstSurface = surfaceTextureRef->getOrCreateSurface(dstDataspace, grContext);
+ sk_sp<SkSurface> dstSurface =
+ surfaceTextureRef->getOrCreateSurface(display.outputDataspace, grContext);
SkCanvas* dstCanvas = mCapture->tryCapture(dstSurface.get());
if (dstCanvas == nullptr) {
@@ -888,10 +878,31 @@
const bool dimInLinearSpace = display.dimmingStage !=
aidl::android::hardware::graphics::composer3::DimmingStage::GAMMA_OETF;
+ const bool isExtendedHdr = (layer.sourceDataspace & ui::Dataspace::RANGE_MASK) ==
+ static_cast<int32_t>(ui::Dataspace::RANGE_EXTENDED) &&
+ (display.outputDataspace & ui::Dataspace::TRANSFER_MASK) ==
+ static_cast<int32_t>(ui::Dataspace::TRANSFER_SRGB);
+
+ const ui::Dataspace runtimeEffectDataspace = !dimInLinearSpace && isExtendedHdr
+ ? static_cast<ui::Dataspace>(
+ (display.outputDataspace & ui::Dataspace::STANDARD_MASK) |
+ ui::Dataspace::TRANSFER_GAMMA2_2 |
+ (display.outputDataspace & ui::Dataspace::RANGE_MASK))
+ : display.outputDataspace;
+
+ // If the input dataspace is range extended, the output dataspace transfer is sRGB
+ // and dimmingStage is GAMMA_OETF, dim in linear space instead, and
+ // set the output dataspace's transfer to be GAMMA2_2.
+ // This allows DPU side to use oetf_gamma_2p2 for extended HDR layer
+ // to avoid tone shift.
+ // The reason of tone shift here is because HDR layers manage white point
+ // luminance in linear space, which color pipelines request GAMMA_OETF break
+ // without a gamma 2.2 fixup.
const bool requiresLinearEffect = layer.colorTransform != mat4() ||
(mUseColorManagement &&
needsToneMapping(layer.sourceDataspace, display.outputDataspace)) ||
- (dimInLinearSpace && !equalsWithinMargin(1.f, layerDimmingRatio));
+ (dimInLinearSpace && !equalsWithinMargin(1.f, layerDimmingRatio)) ||
+ (!dimInLinearSpace && isExtendedHdr);
// quick abort from drawing the remaining portion of the layer
if (layer.skipContentDraw ||
@@ -904,7 +915,7 @@
// image with the same colorspace as the destination surface so that Skia's color
// management is a no-op.
const ui::Dataspace layerDataspace = (!mUseColorManagement || requiresLinearEffect)
- ? dstDataspace
+ ? display.outputDataspace
: layer.sourceDataspace;
SkPaint paint;
@@ -985,7 +996,8 @@
.requiresLinearEffect = requiresLinearEffect,
.layerDimmingRatio = dimInLinearSpace
? layerDimmingRatio
- : 1.f}));
+ : 1.f,
+ .outputDataSpace = runtimeEffectDataspace}));
// Turn on dithering when dimming beyond this (arbitrary) threshold...
static constexpr float kDimmingThreshold = 0.2f;
@@ -1048,7 +1060,8 @@
.display = display,
.undoPremultipliedAlpha = false,
.requiresLinearEffect = requiresLinearEffect,
- .layerDimmingRatio = layerDimmingRatio}));
+ .layerDimmingRatio = layerDimmingRatio,
+ .outputDataSpace = runtimeEffectDataspace}));
}
if (layer.disableBlending) {