Vulkan: Clear to opaque black instead of transparent

src/libANGLE/renderer/vulkan/TextureVk.cpp

@@ -43,6 +43,12 @@ void MapSwizzleState(GLenum internalFormat,
             swizzleStateOut->swizzleBlue  = GL_ZERO;
             swizzleStateOut->swizzleAlpha = swizzleState.swizzleRed;
             break;
+        case GL_RGB8:
+            swizzleStateOut->swizzleRed   = swizzleState.swizzleRed;
+            swizzleStateOut->swizzleGreen = swizzleState.swizzleGreen;
+            swizzleStateOut->swizzleBlue  = swizzleState.swizzleBlue;
+            swizzleStateOut->swizzleAlpha = GL_ONE;
+            break;
         default:
             *swizzleStateOut = swizzleState;
             break;
@@ -557,7 +563,7 @@ vk::Error TextureVk::initImage(RendererVk *renderer,
                                    mappedSwizzle, &mBaseLevelImageView, 1));
 
     // TODO(jmadill): Fold this into the RenderPass load/store ops. http://anglebug.com/2361
-    VkClearColorValue black = {{0}};
+    VkClearColorValue black = {{0, 0, 0, 1.0f}};
     mImage.clearColor(black, commandBuffer);
     return vk::NoError();
 }

src/tests/gl_tests/TextureTest.cpp

@@ -1398,10 +1398,7 @@ TEST_P(TextureCubeTest, CubeMapFBO)
 // Test that glTexSubImage2D works properly when glTexStorage2DEXT has initialized the image with a default color.
 TEST_P(Texture2DTest, TexStorage)
 {
-    // TODO(lucferron): Follow up to clear with opaque black in TextureVk::initImageAndViews.
-    // http://anglebug.com/2536
-    ANGLE_SKIP_TEST_IF(IsVulkan() ||
-                       getClientMajorVersion() < 3 && !extensionEnabled("GL_EXT_texture_storage"));
+    ANGLE_SKIP_TEST_IF(getClientMajorVersion() < 3 && !extensionEnabled("GL_EXT_texture_storage"));
 
     int width = getWindowWidth();
     int height = getWindowHeight();