cc: Use highp precision for texture coords if available and needed

cc/output/gl_renderer.h

 // Copyright 2010 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.
 
 #ifndef CC_OUTPUT_GL_RENDERER_H_
 #define CC_OUTPUT_GL_RENDERER_H_
 
 #include "cc/base/cc_export.h"
 #include "cc/output/direct_renderer.h"
 #include "cc/output/gl_renderer_draw_cache.h"
@@ skipping 27 matching lines @@
           WebKit::WebGraphicsContext3D::
               WebGraphicsSwapBuffersCompleteCallbackCHROMIUM),
       public NON_EXPORTED_BASE(
           WebKit::WebGraphicsContext3D::
               WebGraphicsMemoryAllocationChangedCallbackCHROMIUM),
       public NON_EXPORTED_BASE(
           WebKit::WebGraphicsContext3D::WebGraphicsContextLostCallback) {
  public:
   static scoped_ptr<GLRenderer> Create(RendererClient* client,
                                        OutputSurface* output_surface,
-                                       ResourceProvider* resource_provider);
+                                       ResourceProvider* resource_provider,
+                                       int highp_threshold_min);
 
   virtual ~GLRenderer();
 
   virtual const RendererCapabilities& Capabilities() const OVERRIDE;
 
   WebKit::WebGraphicsContext3D* Context();
 
   virtual void ViewportChanged() OVERRIDE;
 
   virtual void ReceiveCompositorFrameAck(const CompositorFrameAck& ack)
@@ skipping 17 matching lines @@
                                       size_t bytes_allocated) OVERRIDE;
 
   static void DebugGLCall(WebKit::WebGraphicsContext3D* context,
                           const char* command,
                           const char* file,
                           int line);
 
  protected:
   GLRenderer(RendererClient* client,
              OutputSurface* output_surface,
-             ResourceProvider* resource_provider);
+             ResourceProvider* resource_provider,
+             int highp_threshold_min);
 
   bool IsBackbufferDiscarded() const { return is_backbuffer_discarded_; }
   bool Initialize();
 
   const gfx::QuadF& SharedGeometryQuad() const { return shared_geometry_quad_; }
   const GeometryBinding* SharedGeometry() const {
     return shared_geometry_.get();
   }
 
   bool GetFramebufferTexture(ScopedResource* resource, gfx::Rect device_rect);
@@ skipping 177 matching lines @@
       SolidColorProgramAA;
 
   const TileProgram* GetTileProgram();
   const TileProgramOpaque* GetTileProgramOpaque();
   const TileProgramAA* GetTileProgramAA();
   const TileProgramSwizzle* GetTileProgramSwizzle();
   const TileProgramSwizzleOpaque* GetTileProgramSwizzleOpaque();
   const TileProgramSwizzleAA* GetTileProgramSwizzleAA();
   const TileCheckerboardProgram* GetTileCheckerboardProgram();
 
-  const RenderPassProgram* GetRenderPassProgram();
-  const RenderPassProgramAA* GetRenderPassProgramAA();
-  const RenderPassMaskProgram* GetRenderPassMaskProgram();
-  const RenderPassMaskProgramAA* GetRenderPassMaskProgramAA();
-  const RenderPassColorMatrixProgram* GetRenderPassColorMatrixProgram();
-  const RenderPassColorMatrixProgramAA* GetRenderPassColorMatrixProgramAA();
-  const RenderPassMaskColorMatrixProgram* GetRenderPassMaskColorMatrixProgram();
+  const RenderPassProgram* GetRenderPassProgram(
+      TexCoordPrecision precision);
+  const RenderPassProgramAA* GetRenderPassProgramAA(
+      TexCoordPrecision precision);
+  const RenderPassMaskProgram* GetRenderPassMaskProgram(
+      TexCoordPrecision precision);
+  const RenderPassMaskProgramAA* GetRenderPassMaskProgramAA(
+      TexCoordPrecision precision);
+  const RenderPassColorMatrixProgram* GetRenderPassColorMatrixProgram(
+      TexCoordPrecision precision);
+  const RenderPassColorMatrixProgramAA* GetRenderPassColorMatrixProgramAA(
+      TexCoordPrecision precision);
+  const RenderPassMaskColorMatrixProgram* GetRenderPassMaskColorMatrixProgram(
+      TexCoordPrecision precision);
   const RenderPassMaskColorMatrixProgramAA*
-      GetRenderPassMaskColorMatrixProgramAA();
+      GetRenderPassMaskColorMatrixProgramAA(TexCoordPrecision precision);
 
-  const TextureProgram* GetTextureProgram();
-  const TextureProgramFlip* GetTextureProgramFlip();
-  const TextureIOSurfaceProgram* GetTextureIOSurfaceProgram();
+  const TextureProgram* GetTextureProgram(
+      TexCoordPrecision precision);
+  const TextureProgramFlip* GetTextureProgramFlip(
+      TexCoordPrecision precision);
+  const TextureIOSurfaceProgram* GetTextureIOSurfaceProgram(
+      TexCoordPrecision precision);
 
-  const VideoYUVProgram* GetVideoYUVProgram();
-  const VideoStreamTextureProgram* GetVideoStreamTextureProgram();
+  const VideoYUVProgram* GetVideoYUVProgram(
+      TexCoordPrecision precision);
+  const VideoStreamTextureProgram* GetVideoStreamTextureProgram(
+      TexCoordPrecision precision);
 
   const DebugBorderProgram* GetDebugBorderProgram();
   const SolidColorProgram* GetSolidColorProgram();
   const SolidColorProgramAA* GetSolidColorProgramAA();
 
   scoped_ptr<TileProgram> tile_program_;
   scoped_ptr<TileProgramOpaque> tile_program_opaque_;
   scoped_ptr<TileProgramAA> tile_program_aa_;
   scoped_ptr<TileProgramSwizzle> tile_program_swizzle_;
   scoped_ptr<TileProgramSwizzleOpaque> tile_program_swizzle_opaque_;
   scoped_ptr<TileProgramSwizzleAA> tile_program_swizzle_aa_;
   scoped_ptr<TileCheckerboardProgram> tile_checkerboard_program_;
 
   scoped_ptr<TextureProgram> texture_program_;
   scoped_ptr<TextureProgramFlip> texture_program_flip_;
   scoped_ptr<TextureIOSurfaceProgram> texture_io_surface_program_;
 
+  scoped_ptr<TextureProgram> texture_program_highp_;
+  scoped_ptr<TextureProgramFlip> texture_program_flip_highp_;
+  scoped_ptr<TextureIOSurfaceProgram> texture_io_surface_program_highp_;
+
   scoped_ptr<RenderPassProgram> render_pass_program_;
   scoped_ptr<RenderPassProgramAA> render_pass_program_aa_;
   scoped_ptr<RenderPassMaskProgram> render_pass_mask_program_;
   scoped_ptr<RenderPassMaskProgramAA> render_pass_mask_program_aa_;
   scoped_ptr<RenderPassColorMatrixProgram> render_pass_color_matrix_program_;
   scoped_ptr<RenderPassColorMatrixProgramAA>
       render_pass_color_matrix_program_aa_;
   scoped_ptr<RenderPassMaskColorMatrixProgram>
       render_pass_mask_color_matrix_program_;
   scoped_ptr<RenderPassMaskColorMatrixProgramAA>
       render_pass_mask_color_matrix_program_aa_;
 
+  scoped_ptr<RenderPassProgram> render_pass_program_highp_;
+  scoped_ptr<RenderPassProgramAA> render_pass_program_aa_highp_;
+  scoped_ptr<RenderPassMaskProgram> render_pass_mask_program_highp_;
+  scoped_ptr<RenderPassMaskProgramAA> render_pass_mask_program_aa_highp_;
+  scoped_ptr<RenderPassColorMatrixProgram>
+      render_pass_color_matrix_program_highp_;
+  scoped_ptr<RenderPassColorMatrixProgramAA>
+      render_pass_color_matrix_program_aa_highp_;
+  scoped_ptr<RenderPassMaskColorMatrixProgram>
+      render_pass_mask_color_matrix_program_highp_;
+  scoped_ptr<RenderPassMaskColorMatrixProgramAA>
+      render_pass_mask_color_matrix_program_aa_highp_;
+
   scoped_ptr<VideoYUVProgram> video_yuv_program_;
   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_;
 
+  scoped_ptr<VideoYUVProgram> video_yuv_program_highp_;
+  scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_highp_;
+
   scoped_ptr<DebugBorderProgram> debug_border_program_;
   scoped_ptr<SolidColorProgram> solid_color_program_;
   scoped_ptr<SolidColorProgramAA> solid_color_program_aa_;
 
   OutputSurface* output_surface_;
   WebKit::WebGraphicsContext3D* context_;
 
   gfx::Rect swap_buffer_rect_;
   gfx::Rect scissor_rect_;
   bool is_viewport_changed_;
   bool is_backbuffer_discarded_;
   bool discard_backbuffer_when_not_visible_;
   bool is_using_bind_uniform_;
   bool visible_;
   bool is_scissor_enabled_;
   bool blend_shadow_;
   unsigned program_shadow_;
   TexturedQuadDrawCache draw_cache_;
+  int highp_threshold_min_;
 
   scoped_ptr<ResourceProvider::ScopedWriteLockGL> current_framebuffer_lock_;
 
   scoped_refptr<ResourceProvider::Fence> last_swap_fence_;
 
   SkBitmap on_demand_tile_raster_bitmap_;
   ResourceProvider::ResourceId on_demand_tile_raster_resource_id_;
 
   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 };
 
 // Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL
 // call made by the compositor. Useful for debugging rendering issues but
 // will significantly degrade performance.
 #define DEBUG_GL_CALLS 0
 
 #if DEBUG_GL_CALLS && !defined(NDEBUG)
 #define GLC(context, x)                                                        \
   (x, GLRenderer::DebugGLCall(&* context, #x, __FILE__, __LINE__))
 #else
 #define GLC(context, x) (x)
 #endif
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_GL_RENDERER_H_