More WebView HDR plumbing

Pass through format for GL
and shouldDither if HWUI wants
dithering globally enabled

Fixes: 279030860
Test: make
Change-Id: Ic9e767fede8be9664bb87a340573e5f424d0de3e

libs/hwui/pipeline/skia/GLFunctorDrawable.cpp

@@ -27,6 +27,7 @@
 #include "include/gpu/GpuTypes.h" // from Skia
 #include "utils/GLUtils.h"
 #include <effects/GainmapRenderer.h>
+#include "renderthread/CanvasContext.h"
 
 namespace android {
 namespace uirenderer {
@@ -131,6 +132,8 @@ void GLFunctorDrawable::onDraw(SkCanvas* canvas) {
     mat4.getColMajor(&info.transform[0]);
     info.color_space_ptr = canvas->imageInfo().colorSpace();
     info.currentHdrSdrRatio = getTargetHdrSdrRatio(info.color_space_ptr);
+    info.fboColorType = canvas->imageInfo().colorType();
+    info.shouldDither = renderthread::CanvasContext::shouldDither();
 
     // ensure that the framebuffer that the webview will render into is bound before we clear
     // the stencil and/or draw the functor.

libs/hwui/pipeline/skia/VkFunctorDrawable.cpp

@@ -15,22 +15,25 @@
  */
 
 #include "VkFunctorDrawable.h"
-#include <private/hwui/DrawVkInfo.h>
 
 #include <GrBackendDrawableInfo.h>
 #include <SkAndroidFrameworkUtils.h>
 #include <SkImage.h>
 #include <SkM44.h>
 #include <gui/TraceUtils.h>
+#include <private/hwui/DrawVkInfo.h>
 #include <utils/Color.h>
 #include <utils/Trace.h>
 #include <vk/GrVkTypes.h>
+
 #include <thread>
+
+#include "effects/GainmapRenderer.h"
+#include "renderthread/CanvasContext.h"
 #include "renderthread/RenderThread.h"
 #include "renderthread/VulkanManager.h"
 #include "thread/ThreadBase.h"
 #include "utils/TimeUtils.h"
-#include "effects/GainmapRenderer.h"
 
 namespace android {
 namespace uirenderer {
@@ -75,6 +78,7 @@ void VkFunctorDrawHandler::draw(const GrBackendDrawableInfo& info) {
             .clip_bottom = mClip.fBottom,
             .is_layer = !vulkan_info.fFromSwapchainOrAndroidWindow,
             .currentHdrSdrRatio = getTargetHdrSdrRatio(mImageInfo.colorSpace()),
+            .shouldDither = renderthread::CanvasContext::shouldDither(),
     };
     mat4.getColMajor(&params.transform[0]);
     params.secondary_command_buffer = vulkan_info.fSecondaryCommandBuffer;

libs/hwui/private/hwui/DrawGlInfo.h

@@ -18,6 +18,7 @@
 #define ANDROID_HWUI_DRAW_GL_INFO_H
 
 #include <SkColorSpace.h>
+#include <SkColorType.h>
 
 namespace android {
 namespace uirenderer {
@@ -91,6 +92,12 @@ struct DrawGlInfo {
     // be baked into the color_space_ptr, so this is just to indicate the amount of extended
     // range is available if desired
     float currentHdrSdrRatio;
+
+    // Whether or not dithering is globally enabled
+    bool shouldDither;
+
+    // The color type of the destination framebuffer
+    SkColorType fboColorType;
 };  // struct DrawGlInfo
 
 }  // namespace uirenderer

libs/hwui/private/hwui/DrawVkInfo.h

@@ -76,6 +76,9 @@ struct VkFunctorDrawParams {
   // be baked into the color_space_ptr, so this is just to indicate the amount of extended
   // range is available if desired
   float currentHdrSdrRatio;
+
+  // Whether or not dithering is globally enabled
+  bool shouldDither;
 };
 
 }  // namespace uirenderer

libs/hwui/renderthread/CanvasContext.cpp

@@ -1077,6 +1077,12 @@ void CanvasContext::startHintSession() {
     mHintSessionWrapper.init();
 }
 
+bool CanvasContext::shouldDither() {
+    CanvasContext* self = getActiveContext();
+    if (!self) return false;
+    return self->mColorMode != ColorMode::Default;
+}
+
 } /* namespace renderthread */
 } /* namespace uirenderer */
 } /* namespace android */

libs/hwui/renderthread/CanvasContext.h

@@ -234,6 +234,8 @@ public:
 
     void startHintSession();
 
+    static bool shouldDither();
+
 private:
     CanvasContext(RenderThread& thread, bool translucent, RenderNode* rootRenderNode,
                   IContextFactory* contextFactory, std::unique_ptr<IRenderPipeline> renderPipeline,