diff --git a/opengl/tests/EGLTest/EGL_test.cpp b/opengl/tests/EGLTest/EGL_test.cpp
index 9ffe036..5927dc1 100644
--- a/opengl/tests/EGLTest/EGL_test.cpp
+++ b/opengl/tests/EGLTest/EGL_test.cpp
@@ -61,8 +61,8 @@
 class EGLTest : public ::testing::Test {
 public:
     void get8BitConfig(EGLConfig& config);
-    void addOptionalWindowMetadata(std::vector<EGLint>& attrs);
-    void checkOptionalWindowMetadata(EGLSurface eglSurface);
+    void setSurfaceSmpteMetadata(EGLSurface surface);
+    void checkSurfaceSmpteMetadata(EGLSurface eglSurface);
 
 protected:
     EGLDisplay mEglDisplay;
@@ -421,39 +421,39 @@
     EXPECT_EQ(components[3], 8);
 }
 
-void EGLTest::addOptionalWindowMetadata(std::vector<EGLint>& attrs) {
+void EGLTest::setSurfaceSmpteMetadata(EGLSurface surface) {
     if (hasEglExtension(mEglDisplay, "EGL_EXT_surface_SMPTE2086_metadata")) {
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT);
-        attrs.push_back(METADATA_SCALE(0.640));
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT);
-        attrs.push_back(METADATA_SCALE(0.330));
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT);
-        attrs.push_back(METADATA_SCALE(0.290));
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT);
-        attrs.push_back(METADATA_SCALE(0.600));
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT);
-        attrs.push_back(METADATA_SCALE(0.150));
-        attrs.push_back(EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT);
-        attrs.push_back(METADATA_SCALE(0.060));
-        attrs.push_back(EGL_SMPTE2086_WHITE_POINT_X_EXT);
-        attrs.push_back(METADATA_SCALE(0.3127));
-        attrs.push_back(EGL_SMPTE2086_WHITE_POINT_Y_EXT);
-        attrs.push_back(METADATA_SCALE(0.3290));
-        attrs.push_back(EGL_SMPTE2086_MAX_LUMINANCE_EXT);
-        attrs.push_back(METADATA_SCALE(300));
-        attrs.push_back(EGL_SMPTE2086_MIN_LUMINANCE_EXT);
-        attrs.push_back(METADATA_SCALE(0.7));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT,
+                         METADATA_SCALE(0.640));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT,
+                         METADATA_SCALE(0.330));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT,
+                         METADATA_SCALE(0.290));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT,
+                         METADATA_SCALE(0.600));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT,
+                         METADATA_SCALE(0.150));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT,
+                         METADATA_SCALE(0.060));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_WHITE_POINT_X_EXT,
+                         METADATA_SCALE(0.3127));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_WHITE_POINT_Y_EXT,
+                         METADATA_SCALE(0.3290));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT,
+                         METADATA_SCALE(300));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_SMPTE2086_MIN_LUMINANCE_EXT,
+                         METADATA_SCALE(0.7));
     }
 
     if (hasEglExtension(mEglDisplay, "EGL_EXT_surface_CTA861_3_metadata")) {
-        attrs.push_back(EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT);
-        attrs.push_back(METADATA_SCALE(300));
-        attrs.push_back(EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT);
-        attrs.push_back(METADATA_SCALE(75));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
+                         METADATA_SCALE(300));
+        eglSurfaceAttrib(mEglDisplay, surface, EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT,
+                         METADATA_SCALE(75));
     }
 }
 
-void EGLTest::checkOptionalWindowMetadata(EGLSurface eglSurface) {
+void EGLTest::checkSurfaceSmpteMetadata(EGLSurface eglSurface) {
     EGLBoolean success;
     EGLint value;
 
@@ -534,8 +534,6 @@
     winAttrs.push_back(EGL_GL_COLORSPACE_KHR);
     winAttrs.push_back(EGL_GL_COLORSPACE_BT2020_PQ_EXT);
 
-    ASSERT_NO_FATAL_FAILURE(addOptionalWindowMetadata(winAttrs));
-
     winAttrs.push_back(EGL_NONE);
 
     EGLSurface eglSurface = eglCreateWindowSurface(mEglDisplay, config, mANW.get(), winAttrs.data());
@@ -547,7 +545,9 @@
     ASSERT_EQ(EGL_UNSIGNED_TRUE, success);
     ASSERT_EQ(EGL_GL_COLORSPACE_BT2020_PQ_EXT, value);
 
-    ASSERT_NO_FATAL_FAILURE(checkOptionalWindowMetadata(eglSurface));
+    ASSERT_NO_FATAL_FAILURE(setSurfaceSmpteMetadata(eglSurface));
+
+    ASSERT_NO_FATAL_FAILURE(checkSurfaceSmpteMetadata(eglSurface));
 
     EXPECT_TRUE(eglDestroySurface(mEglDisplay, eglSurface));
 }
@@ -584,9 +584,6 @@
     std::vector<EGLint> winAttrs;
     winAttrs.push_back(EGL_GL_COLORSPACE_KHR);
     winAttrs.push_back(EGL_GL_COLORSPACE_BT2020_PQ_EXT);
-
-    ASSERT_NO_FATAL_FAILURE(addOptionalWindowMetadata(winAttrs));
-
     winAttrs.push_back(EGL_NONE);
 
     EGLSurface eglSurface = eglCreateWindowSurface(mEglDisplay, config, mANW.get(), winAttrs.data());
@@ -598,7 +595,9 @@
     ASSERT_EQ(EGL_UNSIGNED_TRUE, success);
     ASSERT_EQ(EGL_GL_COLORSPACE_BT2020_PQ_EXT, value);
 
-    ASSERT_NO_FATAL_FAILURE(checkOptionalWindowMetadata(eglSurface));
+    ASSERT_NO_FATAL_FAILURE(setSurfaceSmpteMetadata(eglSurface));
+
+    ASSERT_NO_FATAL_FAILURE(checkSurfaceSmpteMetadata(eglSurface));
 
     EXPECT_TRUE(eglDestroySurface(mEglDisplay, eglSurface));
 }
diff --git a/opengl/tests/gl2_basic/gl2_basic.cpp b/opengl/tests/gl2_basic/gl2_basic.cpp
index 13f6fba..0bb77f3 100644
--- a/opengl/tests/gl2_basic/gl2_basic.cpp
+++ b/opengl/tests/gl2_basic/gl2_basic.cpp
@@ -32,6 +32,8 @@
 using namespace android;
 extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
 
+#define METADATA_SCALE(x) (static_cast<EGLint>(x * EGL_METADATA_SCALING_EXT))
+
 static void printGLString(const char *name, GLenum s) {
     // fprintf(stderr, "printGLString %s, %d\n", name, s);
     const char *v = (const char *) glGetString(s);
@@ -265,6 +267,39 @@
     return true;
 }
 
+void setSurfaceMetadata(EGLDisplay dpy, EGLSurface surface) {
+    static EGLBoolean toggle = GL_FALSE;
+    if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_SMPTE2086_metadata")) {
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT, METADATA_SCALE(0.640));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT, METADATA_SCALE(0.330));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT, METADATA_SCALE(0.290));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT, METADATA_SCALE(0.600));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT, METADATA_SCALE(0.150));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT, METADATA_SCALE(0.060));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_X_EXT, METADATA_SCALE(0.3127));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_Y_EXT, METADATA_SCALE(0.3290));
+        if (toggle) {
+            eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(350));
+        } else {
+            eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(300));
+        }
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MIN_LUMINANCE_EXT, METADATA_SCALE(0.7));
+    }
+
+    if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_CTA861_3_metadata")) {
+        if (toggle) {
+            eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
+                             METADATA_SCALE(300));
+        } else {
+            eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
+                             METADATA_SCALE(325));
+        }
+        eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT,
+                         METADATA_SCALE(75));
+    }
+    toggle = !toggle;
+}
+
 int main(int /*argc*/, char** /*argv*/) {
     EGLBoolean returnValue;
     EGLConfig myConfig = {0};
@@ -318,10 +353,11 @@
     printf("Chose this configuration:\n");
     printEGLConfiguration(dpy, myConfig);
 
-    surface = eglCreateWindowSurface(dpy, myConfig, window, NULL);
+    EGLint winAttribs[] = {EGL_GL_COLORSPACE_KHR, EGL_GL_COLORSPACE_SRGB_KHR, EGL_NONE};
+    surface = eglCreateWindowSurface(dpy, myConfig, window, winAttribs);
     checkEglError("eglCreateWindowSurface");
     if (surface == EGL_NO_SURFACE) {
-        printf("gelCreateWindowSurface failed.\n");
+        printf("eglCreateWindowSurface failed.\n");
         return 0;
     }
 
@@ -356,6 +392,7 @@
 
     for (;;) {
         renderFrame();
+        setSurfaceMetadata(dpy, surface);
         eglSwapBuffers(dpy, surface);
         checkEglError("eglSwapBuffers");
     }
diff --git a/opengl/tests/gl_basic/gl_basic.cpp b/opengl/tests/gl_basic/gl_basic.cpp
index a675c7c..63d94be 100644
--- a/opengl/tests/gl_basic/gl_basic.cpp
+++ b/opengl/tests/gl_basic/gl_basic.cpp
@@ -15,6 +15,8 @@
 
 using namespace android;
 
+#define METADATA_SCALE(x) (static_cast<EGLint>(x * EGL_METADATA_SCALING_EXT))
+
 EGLDisplay eglDisplay;
 EGLSurface eglSurface;
 EGLContext eglContext;
@@ -330,6 +332,39 @@
     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
 }
 
+void setSurfaceMetadata(EGLDisplay dpy, EGLSurface surface) {
+    static EGLBoolean toggle = GL_FALSE;
+    if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_SMPTE2086_metadata")) {
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RX_EXT, METADATA_SCALE(0.640));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_RY_EXT, METADATA_SCALE(0.330));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GX_EXT, METADATA_SCALE(0.290));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_GY_EXT, METADATA_SCALE(0.600));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BX_EXT, METADATA_SCALE(0.150));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_DISPLAY_PRIMARY_BY_EXT, METADATA_SCALE(0.060));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_X_EXT, METADATA_SCALE(0.3127));
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_WHITE_POINT_Y_EXT, METADATA_SCALE(0.3290));
+        if (toggle) {
+            eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(350));
+        } else {
+            eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MAX_LUMINANCE_EXT, METADATA_SCALE(300));
+        }
+        eglSurfaceAttrib(dpy, surface, EGL_SMPTE2086_MIN_LUMINANCE_EXT, METADATA_SCALE(0.7));
+    }
+
+    if (EGLUtils::hasEglExtension(dpy, "EGL_EXT_surface_CTA861_3_metadata")) {
+        if (toggle) {
+            eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
+                             METADATA_SCALE(300));
+        } else {
+            eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_CONTENT_LIGHT_LEVEL_EXT,
+                             METADATA_SCALE(325));
+        }
+        eglSurfaceAttrib(dpy, surface, EGL_CTA861_3_MAX_FRAME_AVERAGE_LEVEL_EXT,
+                         METADATA_SCALE(75));
+    }
+    toggle = !toggle;
+}
+
 void render()
 {
     const GLfloat vertices[] = {
@@ -354,5 +389,6 @@
     int nelem = sizeof(indices)/sizeof(indices[0]);
     glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
     glDrawElements(GL_TRIANGLES, nelem, GL_UNSIGNED_SHORT, indices);
+    setSurfaceMetadata(eglDisplay, eglSurface);
     eglSwapBuffers(eglDisplay, eglSurface);
 }