Add logic to convert from RenderPassDrawQuads to CALayerOverlays.

cc/output/ca_layer_overlay.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/output/ca_layer_overlay.h"
 
 #include "base/metrics/histogram.h"
+#include "cc/quads/render_pass_draw_quad.h"
 #include "cc/quads/solid_color_draw_quad.h"
 #include "cc/quads/stream_video_draw_quad.h"
 #include "cc/quads/texture_draw_quad.h"
 #include "cc/quads/tile_draw_quad.h"
 #include "cc/resources/resource_provider.h"
 #include "gpu/GLES2/gl2extchromium.h"
 
 namespace cc {
 
 namespace {
 
+bool g_allow_rpdq_quad_conversion = false;
+
 // This enum is used for histogram states and should only have new values added
 // to the end before COUNT.
 enum CALayerResult {
   CA_LAYER_SUCCESS = 0,
   CA_LAYER_FAILED_UNKNOWN,
   CA_LAYER_FAILED_IO_SURFACE_NOT_CANDIDATE,
   CA_LAYER_FAILED_STREAM_VIDEO_NOT_CANDIDATE,
   CA_LAYER_FAILED_STREAM_VIDEO_TRANSFORM,
   CA_LAYER_FAILED_TEXTURE_NOT_CANDIDATE,
   CA_LAYER_FAILED_TEXTURE_Y_FLIPPED,
   CA_LAYER_FAILED_TILE_NOT_CANDIDATE,
   CA_LAYER_FAILED_QUAD_BLEND_MODE,
   CA_LAYER_FAILED_QUAD_TRANSFORM,
   CA_LAYER_FAILED_QUAD_CLIPPING,
   CA_LAYER_FAILED_DEBUG_BORDER,
   CA_LAYER_FAILED_PICTURE_CONTENT,
   CA_LAYER_FAILED_RENDER_PASS,
   CA_LAYER_FAILED_SURFACE_CONTENT,
   CA_LAYER_FAILED_YUV_VIDEO_CONTENT,
   CA_LAYER_FAILED_DIFFERENT_CLIP_SETTINGS,
   CA_LAYER_FAILED_DIFFERENT_VERTEX_OPACITIES,
+  CA_LAYER_FAILED_RENDER_PASS_FILTER_SCALE,
+  CA_LAYER_FAILED_RENDER_PASS_BACKGROUND_FILTERS,
+  CA_LAYER_FAILED_RENDER_PASS_MASK,
+  CA_LAYER_FAILED_RENDER_PASS_FILTER_OPERATION,
   CA_LAYER_FAILED_COUNT,
 };
 
+bool ConvertAndAppendFilterOperation(
+    const FilterOperation& operation,
+    ui::CARendererLayerParams::FilterEffects* filter_effects) {
+  ui::CARendererLayerParams::FilterEffect filter_effect;
+  switch (operation.type()) {
+    case FilterOperation::GRAYSCALE:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::GRAYSCALE;
+      break;
+    case FilterOperation::SEPIA:
+      filter_effect.type = ui::CARendererLayerParams::FilterEffectType::SEPIA;
+      break;
+    case FilterOperation::SATURATE:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::SATURATE;
+      break;
+    case FilterOperation::HUE_ROTATE:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::HUE_ROTATE;
+      break;
+    case FilterOperation::INVERT:
+      filter_effect.type = ui::CARendererLayerParams::FilterEffectType::INVERT;
+      break;
+    case FilterOperation::BRIGHTNESS:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::BRIGHTNESS;
+      break;
+    case FilterOperation::CONTRAST:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::CONTRAST;
+      break;
+    case FilterOperation::OPACITY:
+      filter_effect.type = ui::CARendererLayerParams::FilterEffectType::OPACITY;
+      break;
+    case FilterOperation::BLUR:
+      filter_effect.type = ui::CARendererLayerParams::FilterEffectType::BLUR;
+      break;
+    case FilterOperation::DROP_SHADOW:
+      filter_effect.type =
+          ui::CARendererLayerParams::FilterEffectType::DROP_SHADOW;
+      break;
+    default:
+      return false;
+  }
+  float amount = operation.amount();
+  static_assert(sizeof(int32_t) == sizeof(float),
+                "This conversion requires that float and int32_t have the "
+                "same size.");
+  filter_effect.data[0] = *reinterpret_cast<int32_t*>(&amount);
+  if (filter_effect.type ==
+      ui::CARendererLayerParams::FilterEffectType::DROP_SHADOW) {
+    filter_effect.data[1] = operation.drop_shadow_offset().x();
+    filter_effect.data[2] = operation.drop_shadow_offset().y();
+    SkColor color = operation.drop_shadow_color();
+
+    static_assert(sizeof(int32_t) == sizeof(SkColor),
+                  "This conversion requires that SkColor and int32_t have the "
+                  "same size.");
+    filter_effect.data[3] = *reinterpret_cast<int32_t*>(&color);
+  }
+  filter_effects->push_back(filter_effect);
+  return true;
+}
+
+CALayerResult FromRenderPassQuad(ResourceProvider* resource_provider,
+                                 const RenderPassDrawQuad* quad,
+                                 CALayerOverlay* ca_layer_overlay) {
+  if (quad->filters_scale != gfx::Vector2dF(1, 1))
+    return CA_LAYER_FAILED_RENDER_PASS_FILTER_SCALE;
+  if (quad->background_filters.size() != 0)
+    return CA_LAYER_FAILED_RENDER_PASS_BACKGROUND_FILTERS;
+  if (quad->mask_resource_id() != 0)
+    return CA_LAYER_FAILED_RENDER_PASS_MASK;
+
+  for (const FilterOperation& operation : quad->filters.operations()) {
+    bool success = ConvertAndAppendFilterOperation(
+        operation, &ca_layer_overlay->filter_effects);
+    if (!success)
+      return CA_LAYER_FAILED_RENDER_PASS_FILTER_OPERATION;
+  }
+
+  ca_layer_overlay->render_pass_id = quad->render_pass_id;
+  ca_layer_overlay->contents_rect = gfx::RectF(0, 0, 1, 1);
+
+  // TODO(erikchen): Enable this when RenderPassDrawQuad promotion to CALayer
+  // is fully functional. https://crbug.com/581526.
+  if (g_allow_rpdq_quad_conversion)
+    return CA_LAYER_SUCCESS;
+  return CA_LAYER_FAILED_RENDER_PASS;
+}
+
 CALayerResult FromStreamVideoQuad(ResourceProvider* resource_provider,
                                   const StreamVideoDrawQuad* quad,
                                   CALayerOverlay* ca_layer_overlay) {
   unsigned resource_id = quad->resource_id();
   if (!resource_provider->IsOverlayCandidate(resource_id))
     return CA_LAYER_FAILED_STREAM_VIDEO_NOT_CANDIDATE;
   ca_layer_overlay->contents_resource_id = resource_id;
   // TODO(ccameron): Support merging at least some basic transforms into the
   // layer transform.
   if (!quad->matrix.IsIdentity())
@@ skipping 115 matching lines @@
                                       ca_layer_overlay, skip);
       case DrawQuad::STREAM_VIDEO_CONTENT:
         return FromStreamVideoQuad(resource_provider,
                                    StreamVideoDrawQuad::MaterialCast(quad),
                                    ca_layer_overlay);
       case DrawQuad::DEBUG_BORDER:
         return CA_LAYER_FAILED_DEBUG_BORDER;
       case DrawQuad::PICTURE_CONTENT:
         return CA_LAYER_FAILED_PICTURE_CONTENT;
       case DrawQuad::RENDER_PASS:
-        return CA_LAYER_FAILED_RENDER_PASS;
+        return FromRenderPassQuad(resource_provider,
+                                  RenderPassDrawQuad::MaterialCast(quad),
+                                  ca_layer_overlay);
       case DrawQuad::SURFACE_CONTENT:
         return CA_LAYER_FAILED_SURFACE_CONTENT;
       case DrawQuad::YUV_VIDEO_CONTENT:
         return CA_LAYER_FAILED_YUV_VIDEO_CONTENT;
       default:
         break;
     }
 
     return CA_LAYER_FAILED_UNKNOWN;
   }
@@ skipping 55 matching lines @@
   UMA_HISTOGRAM_ENUMERATION("Compositing.Renderer.CALayerResult", result,
                             CA_LAYER_FAILED_COUNT);
 
   if (result != CA_LAYER_SUCCESS) {
     ca_layer_overlays->clear();
     return false;
   }
   return true;
 }
 
+void EnableRenderPassDrawQuadForTesting() {
+  g_allow_rpdq_quad_conversion = true;
+}
+
 }  // namespace cc