cc/output/gl_renderer.h

   1 // Copyright 2010 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CC_OUTPUT_GL_RENDERER_H_
   6 #define CC_OUTPUT_GL_RENDERER_H_
   7
   8 #include "base/cancelable_callback.h"
   9 #include "cc/base/cc_export.h"
  10 #include "cc/base/scoped_ptr_vector.h"
  11 #include "cc/output/direct_renderer.h"
  12 #include "cc/output/gl_renderer_draw_cache.h"
  13 #include "cc/output/program_binding.h"
  14 #include "cc/output/renderer.h"
  15 #include "cc/quads/checkerboard_draw_quad.h"
  16 #include "cc/quads/debug_border_draw_quad.h"
  17 #include "cc/quads/io_surface_draw_quad.h"
  18 #include "cc/quads/render_pass_draw_quad.h"
  19 #include "cc/quads/solid_color_draw_quad.h"
  20 #include "cc/quads/tile_draw_quad.h"
  21 #include "cc/quads/yuv_video_draw_quad.h"
  22 #include "ui/gfx/quad_f.h"
  23
  24 class SkBitmap;
  25
  26 namespace WebKit { class WebGraphicsContext3D; }
  27
  28 namespace cc {
  29
  30 class GLRendererShaderTest;
  31 class OutputSurface;
  32 class PictureDrawQuad;
  33 class ScopedResource;
  34 class StreamVideoDrawQuad;
  35 class TextureDrawQuad;
  36 class TextureMailboxDeleter;
  37 class GeometryBinding;
  38 class ScopedEnsureFramebufferAllocation;
  39
  40 // Class that handles drawing of composited render layers using GL.
  41 class CC_EXPORT GLRenderer : public DirectRenderer {
  42  public:
  43   static scoped_ptr<GLRenderer> Create(
  44       RendererClient* client,
  45       const LayerTreeSettings* settings,
  46       OutputSurface* output_surface,
  47       ResourceProvider* resource_provider,
  48       TextureMailboxDeleter* texture_mailbox_deleter,
  49       int highp_threshold_min,
  50       bool use_skia_gpu_backend);
  51
  52   virtual ~GLRenderer();
  53
  54   virtual const RendererCapabilities& Capabilities() const OVERRIDE;
  55
  56   WebKit::WebGraphicsContext3D* Context();
  57
  58   virtual void ViewportChanged() OVERRIDE;
  59
  60   // Waits for rendering to finish.
  61   virtual void Finish() OVERRIDE;
  62
  63   virtual void DoNoOp() OVERRIDE;
  64   virtual void SwapBuffers() OVERRIDE;
  65
  66   virtual void GetFramebufferPixels(void* pixels, gfx::Rect rect) OVERRIDE;
  67
  68   virtual bool IsContextLost() OVERRIDE;
  69
  70   virtual void SetVisible(bool visible) OVERRIDE;
  71
  72   virtual void SendManagedMemoryStats(size_t bytes_visible,
  73                                       size_t bytes_visible_and_nearby,
  74                                       size_t bytes_allocated) OVERRIDE;
  75
  76   virtual void SetDiscardBackBufferWhenNotVisible(bool discard) OVERRIDE;
  77
  78   static void DebugGLCall(WebKit::WebGraphicsContext3D* context,
  79                           const char* command,
  80                           const char* file,
  81                           int line);
  82
  83   bool CanUseSkiaGPUBackend() const;
  84
  85  protected:
  86   GLRenderer(RendererClient* client,
  87              const LayerTreeSettings* settings,
  88              OutputSurface* output_surface,
  89              ResourceProvider* resource_provider,
  90              TextureMailboxDeleter* texture_mailbox_deleter,
  91              int highp_threshold_min);
  92
  93   bool IsBackbufferDiscarded() const { return is_backbuffer_discarded_; }
  94   bool Initialize();
  95   void InitializeGrContext();
  96
  97   const gfx::QuadF& SharedGeometryQuad() const { return shared_geometry_quad_; }
  98   const GeometryBinding* SharedGeometry() const {
  99     return shared_geometry_.get();
 100   }
 101
 102   void GetFramebufferPixelsAsync(gfx::Rect rect,
 103                                  scoped_ptr<CopyOutputRequest> request);
 104   void GetFramebufferTexture(unsigned texture_id,
 105                              ResourceFormat texture_format,
 106                              gfx::Rect device_rect);
 107   void ReleaseRenderPassTextures();
 108
 109   void SetStencilEnabled(bool enabled);
 110   bool stencil_enabled() const { return stencil_shadow_; }
 111   void SetBlendEnabled(bool enabled);
 112   bool blend_enabled() const { return blend_shadow_; }
 113
 114   virtual void BindFramebufferToOutputSurface(DrawingFrame* frame) OVERRIDE;
 115   virtual bool BindFramebufferToTexture(DrawingFrame* frame,
 116                                         const ScopedResource* resource,
 117                                         gfx::Rect target_rect) OVERRIDE;
 118   virtual void SetDrawViewport(gfx::Rect window_space_viewport) OVERRIDE;
 119   virtual void SetScissorTestRect(gfx::Rect scissor_rect) OVERRIDE;
 120   virtual void DiscardPixels(bool has_external_stencil_test,
 121                              bool draw_rect_covers_full_surface) OVERRIDE;
 122   virtual void ClearFramebuffer(DrawingFrame* frame,
 123                                 bool has_external_stencil_test) OVERRIDE;
 124   virtual void DoDrawQuad(DrawingFrame* frame, const class DrawQuad*) OVERRIDE;
 125   virtual void BeginDrawingFrame(DrawingFrame* frame) OVERRIDE;
 126   virtual void FinishDrawingFrame(DrawingFrame* frame) OVERRIDE;
 127   virtual bool FlippedFramebuffer() const OVERRIDE;
 128   virtual void EnsureScissorTestEnabled() OVERRIDE;
 129   virtual void EnsureScissorTestDisabled() OVERRIDE;
 130   virtual void CopyCurrentRenderPassToBitmap(
 131       DrawingFrame* frame,
 132       scoped_ptr<CopyOutputRequest> request) OVERRIDE;
 133   virtual void FinishDrawingQuadList() OVERRIDE;
 134
 135   // Check if quad needs antialiasing and if so, inflate the quad and
 136   // fill edge array for fragment shader.  local_quad is set to
 137   // inflated quad if antialiasing is required, otherwise it is left
 138   // unchanged.  edge array is filled with inflated quad's edge data
 139   // if antialiasing is required, otherwise it is left unchanged.
 140   // Returns true if quad requires antialiasing and false otherwise.
 141   static bool SetupQuadForAntialiasing(const gfx::Transform& device_transform,
 142                                        const DrawQuad* quad,
 143                                        gfx::QuadF* local_quad,
 144                                        float edge[24]);
 145
 146  private:
 147   friend class GLRendererShaderPixelTest;
 148   friend class GLRendererShaderTest;
 149
 150   static void ToGLMatrix(float* gl_matrix, const gfx::Transform& transform);
 151
 152   void DrawCheckerboardQuad(const DrawingFrame* frame,
 153                             const CheckerboardDrawQuad* quad);
 154   void DrawDebugBorderQuad(const DrawingFrame* frame,
 155                            const DebugBorderDrawQuad* quad);
 156   scoped_ptr<ScopedResource> DrawBackgroundFilters(
 157       DrawingFrame* frame,
 158       const RenderPassDrawQuad* quad,
 159       const gfx::Transform& contents_device_transform,
 160       const gfx::Transform& contents_device_transformInverse);
 161   void DrawRenderPassQuad(DrawingFrame* frame, const RenderPassDrawQuad* quad);
 162   void DrawSolidColorQuad(const DrawingFrame* frame,
 163                           const SolidColorDrawQuad* quad);
 164   void DrawStreamVideoQuad(const DrawingFrame* frame,
 165                            const StreamVideoDrawQuad* quad);
 166   void EnqueueTextureQuad(const DrawingFrame* frame,
 167                           const TextureDrawQuad* quad);
 168   void FlushTextureQuadCache();
 169   void DrawIOSurfaceQuad(const DrawingFrame* frame,
 170                          const IOSurfaceDrawQuad* quad);
 171   void DrawTileQuad(const DrawingFrame* frame, const TileDrawQuad* quad);
 172   void DrawContentQuad(const DrawingFrame* frame,
 173                        const ContentDrawQuadBase* quad,
 174                        ResourceProvider::ResourceId resource_id);
 175   void DrawYUVVideoQuad(const DrawingFrame* frame,
 176                         const YUVVideoDrawQuad* quad);
 177   void DrawPictureQuad(const DrawingFrame* frame,
 178                        const PictureDrawQuad* quad);
 179   void DrawPictureQuadDirectToBackbuffer(const DrawingFrame* frame,
 180                                          const PictureDrawQuad* quad);
 181
 182   void SetShaderOpacity(float opacity, int alpha_location);
 183   void SetShaderQuadF(const gfx::QuadF& quad, int quad_location);
 184   void DrawQuadGeometry(const DrawingFrame* frame,
 185                         const gfx::Transform& draw_transform,
 186                         const gfx::RectF& quad_rect,
 187                         int matrix_location);
 188   void SetUseProgram(unsigned program);
 189
 190   void CopyTextureToFramebuffer(const DrawingFrame* frame,
 191                                 int texture_id,
 192                                 gfx::Rect rect,
 193                                 const gfx::Transform& draw_matrix,
 194                                 bool flip_vertically);
 195
 196   bool UseScopedTexture(DrawingFrame* frame,
 197                         const ScopedResource* resource,
 198                         gfx::Rect viewport_rect);
 199
 200   bool MakeContextCurrent();
 201
 202   bool InitializeSharedObjects();
 203   void CleanupSharedObjects();
 204
 205   typedef base::Callback<void(scoped_ptr<CopyOutputRequest> copy_request,
 206                               bool success)>
 207       AsyncGetFramebufferPixelsCleanupCallback;
 208   void DoGetFramebufferPixels(
 209       uint8* pixels,
 210       gfx::Rect window_rect,
 211       const AsyncGetFramebufferPixelsCleanupCallback& cleanup_callback);
 212   void FinishedReadback(
 213       const AsyncGetFramebufferPixelsCleanupCallback& cleanup_callback,
 214       unsigned source_buffer,
 215       unsigned query,
 216       uint8_t* dest_pixels,
 217       gfx::Size size);
 218   void PassOnSkBitmap(scoped_ptr<SkBitmap> bitmap,
 219                       scoped_ptr<SkAutoLockPixels> lock,
 220                       scoped_ptr<CopyOutputRequest> request,
 221                       bool success);
 222
 223   void ReinitializeGrCanvas();
 224   void ReinitializeGLState();
 225
 226   virtual void DiscardBackbuffer() OVERRIDE;
 227   virtual void EnsureBackbuffer() OVERRIDE;
 228   void EnforceMemoryPolicy();
 229
 230   RendererCapabilities capabilities_;
 231
 232   unsigned offscreen_framebuffer_id_;
 233
 234   scoped_ptr<GeometryBinding> shared_geometry_;
 235   gfx::QuadF shared_geometry_quad_;
 236
 237   // This block of bindings defines all of the programs used by the compositor
 238   // itself.  Add any new programs here to GLRendererShaderTest.
 239
 240   // Tiled layer shaders.
 241   typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexAlpha>
 242       TileProgram;
 243   typedef ProgramBinding<VertexShaderTileAA, FragmentShaderRGBATexClampAlphaAA>
 244       TileProgramAA;
 245   typedef ProgramBinding<VertexShaderTileAA,
 246                          FragmentShaderRGBATexClampSwizzleAlphaAA>
 247       TileProgramSwizzleAA;
 248   typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexOpaque>
 249       TileProgramOpaque;
 250   typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexSwizzleAlpha>
 251       TileProgramSwizzle;
 252   typedef ProgramBinding<VertexShaderTile, FragmentShaderRGBATexSwizzleOpaque>
 253       TileProgramSwizzleOpaque;
 254   typedef ProgramBinding<VertexShaderPosTex, FragmentShaderCheckerboard>
 255       TileCheckerboardProgram;
 256
 257   // Texture shaders.
 258   typedef ProgramBinding<VertexShaderPosTexTransform,
 259                          FragmentShaderRGBATexVaryingAlpha> TextureProgram;
 260   typedef ProgramBinding<VertexShaderPosTexTransform,
 261                          FragmentShaderRGBATexPremultiplyAlpha>
 262       NonPremultipliedTextureProgram;
 263   typedef ProgramBinding<VertexShaderPosTexTransform,
 264                          FragmentShaderTexBackgroundVaryingAlpha>
 265       TextureBackgroundProgram;
 266   typedef ProgramBinding<VertexShaderPosTexTransform,
 267                          FragmentShaderTexBackgroundPremultiplyAlpha>
 268       NonPremultipliedTextureBackgroundProgram;
 269   typedef ProgramBinding<VertexShaderPosTexTransform,
 270                          FragmentShaderRGBATexRectVaryingAlpha>
 271       TextureIOSurfaceProgram;
 272
 273   // Render surface shaders.
 274   typedef ProgramBinding<VertexShaderPosTexTransform,
 275                          FragmentShaderRGBATexAlpha> RenderPassProgram;
 276   typedef ProgramBinding<VertexShaderPosTexTransform,
 277                          FragmentShaderRGBATexAlphaMask> RenderPassMaskProgram;
 278   typedef ProgramBinding<VertexShaderQuadTexTransformAA,
 279                          FragmentShaderRGBATexAlphaAA> RenderPassProgramAA;
 280   typedef ProgramBinding<VertexShaderQuadTexTransformAA,
 281                          FragmentShaderRGBATexAlphaMaskAA>
 282       RenderPassMaskProgramAA;
 283   typedef ProgramBinding<VertexShaderPosTexTransform,
 284                          FragmentShaderRGBATexColorMatrixAlpha>
 285       RenderPassColorMatrixProgram;
 286   typedef ProgramBinding<VertexShaderQuadTexTransformAA,
 287                          FragmentShaderRGBATexAlphaMaskColorMatrixAA>
 288       RenderPassMaskColorMatrixProgramAA;
 289   typedef ProgramBinding<VertexShaderQuadTexTransformAA,
 290                          FragmentShaderRGBATexAlphaColorMatrixAA>
 291       RenderPassColorMatrixProgramAA;
 292   typedef ProgramBinding<VertexShaderPosTexTransform,
 293                          FragmentShaderRGBATexAlphaMaskColorMatrix>
 294       RenderPassMaskColorMatrixProgram;
 295
 296   // Video shaders.
 297   typedef ProgramBinding<VertexShaderVideoTransform,
 298                          FragmentShaderOESImageExternal>
 299       VideoStreamTextureProgram;
 300   typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVVideo>
 301       VideoYUVProgram;
 302   typedef ProgramBinding<VertexShaderPosTexYUVStretch, FragmentShaderYUVAVideo>
 303       VideoYUVAProgram;
 304
 305   // Special purpose / effects shaders.
 306   typedef ProgramBinding<VertexShaderPos, FragmentShaderColor>
 307       DebugBorderProgram;
 308   typedef ProgramBinding<VertexShaderQuad, FragmentShaderColor>
 309       SolidColorProgram;
 310   typedef ProgramBinding<VertexShaderQuadAA, FragmentShaderColorAA>
 311       SolidColorProgramAA;
 312
 313   const TileProgram* GetTileProgram(TexCoordPrecision precision);
 314   const TileProgramOpaque* GetTileProgramOpaque(TexCoordPrecision precision);
 315   const TileProgramAA* GetTileProgramAA(TexCoordPrecision precision);
 316   const TileProgramSwizzle* GetTileProgramSwizzle(TexCoordPrecision precision);
 317   const TileProgramSwizzleOpaque* GetTileProgramSwizzleOpaque(
 318       TexCoordPrecision precision);
 319   const TileProgramSwizzleAA* GetTileProgramSwizzleAA(
 320       TexCoordPrecision precision);
 321   const TileCheckerboardProgram* GetTileCheckerboardProgram();
 322
 323   const RenderPassProgram* GetRenderPassProgram(
 324       TexCoordPrecision precision);
 325   const RenderPassProgramAA* GetRenderPassProgramAA(
 326       TexCoordPrecision precision);
 327   const RenderPassMaskProgram* GetRenderPassMaskProgram(
 328       TexCoordPrecision precision);
 329   const RenderPassMaskProgramAA* GetRenderPassMaskProgramAA(
 330       TexCoordPrecision precision);
 331   const RenderPassColorMatrixProgram* GetRenderPassColorMatrixProgram(
 332       TexCoordPrecision precision);
 333   const RenderPassColorMatrixProgramAA* GetRenderPassColorMatrixProgramAA(
 334       TexCoordPrecision precision);
 335   const RenderPassMaskColorMatrixProgram* GetRenderPassMaskColorMatrixProgram(
 336       TexCoordPrecision precision);
 337   const RenderPassMaskColorMatrixProgramAA*
 338       GetRenderPassMaskColorMatrixProgramAA(TexCoordPrecision precision);
 339
 340   const TextureProgram* GetTextureProgram(
 341       TexCoordPrecision precision);
 342   const NonPremultipliedTextureProgram* GetNonPremultipliedTextureProgram(
 343       TexCoordPrecision precision);
 344   const TextureBackgroundProgram* GetTextureBackgroundProgram(
 345       TexCoordPrecision precision);
 346   const NonPremultipliedTextureBackgroundProgram*
 347       GetNonPremultipliedTextureBackgroundProgram(TexCoordPrecision precision);
 348   const TextureIOSurfaceProgram* GetTextureIOSurfaceProgram(
 349       TexCoordPrecision precision);
 350
 351   const VideoYUVProgram* GetVideoYUVProgram(
 352       TexCoordPrecision precision);
 353   const VideoYUVAProgram* GetVideoYUVAProgram(
 354       TexCoordPrecision precision);
 355   const VideoStreamTextureProgram* GetVideoStreamTextureProgram(
 356       TexCoordPrecision precision);
 357
 358   const DebugBorderProgram* GetDebugBorderProgram();
 359   const SolidColorProgram* GetSolidColorProgram();
 360   const SolidColorProgramAA* GetSolidColorProgramAA();
 361
 362   scoped_ptr<TileProgram> tile_program_;
 363   scoped_ptr<TileProgramOpaque> tile_program_opaque_;
 364   scoped_ptr<TileProgramAA> tile_program_aa_;
 365   scoped_ptr<TileProgramSwizzle> tile_program_swizzle_;
 366   scoped_ptr<TileProgramSwizzleOpaque> tile_program_swizzle_opaque_;
 367   scoped_ptr<TileProgramSwizzleAA> tile_program_swizzle_aa_;
 368   scoped_ptr<TileCheckerboardProgram> tile_checkerboard_program_;
 369
 370   scoped_ptr<TileProgram> tile_program_highp_;
 371   scoped_ptr<TileProgramOpaque> tile_program_opaque_highp_;
 372   scoped_ptr<TileProgramAA> tile_program_aa_highp_;
 373   scoped_ptr<TileProgramSwizzle> tile_program_swizzle_highp_;
 374   scoped_ptr<TileProgramSwizzleOpaque> tile_program_swizzle_opaque_highp_;
 375   scoped_ptr<TileProgramSwizzleAA> tile_program_swizzle_aa_highp_;
 376
 377   scoped_ptr<TextureProgram> texture_program_;
 378   scoped_ptr<NonPremultipliedTextureProgram> nonpremultiplied_texture_program_;
 379   scoped_ptr<TextureBackgroundProgram> texture_background_program_;
 380   scoped_ptr<NonPremultipliedTextureBackgroundProgram>
 381       nonpremultiplied_texture_background_program_;
 382   scoped_ptr<TextureIOSurfaceProgram> texture_io_surface_program_;
 383
 384   scoped_ptr<TextureProgram> texture_program_highp_;
 385   scoped_ptr<NonPremultipliedTextureProgram>
 386       nonpremultiplied_texture_program_highp_;
 387   scoped_ptr<TextureBackgroundProgram> texture_background_program_highp_;
 388   scoped_ptr<NonPremultipliedTextureBackgroundProgram>
 389       nonpremultiplied_texture_background_program_highp_;
 390   scoped_ptr<TextureIOSurfaceProgram> texture_io_surface_program_highp_;
 391
 392   scoped_ptr<RenderPassProgram> render_pass_program_;
 393   scoped_ptr<RenderPassProgramAA> render_pass_program_aa_;
 394   scoped_ptr<RenderPassMaskProgram> render_pass_mask_program_;
 395   scoped_ptr<RenderPassMaskProgramAA> render_pass_mask_program_aa_;
 396   scoped_ptr<RenderPassColorMatrixProgram> render_pass_color_matrix_program_;
 397   scoped_ptr<RenderPassColorMatrixProgramAA>
 398       render_pass_color_matrix_program_aa_;
 399   scoped_ptr<RenderPassMaskColorMatrixProgram>
 400       render_pass_mask_color_matrix_program_;
 401   scoped_ptr<RenderPassMaskColorMatrixProgramAA>
 402       render_pass_mask_color_matrix_program_aa_;
 403
 404   scoped_ptr<RenderPassProgram> render_pass_program_highp_;
 405   scoped_ptr<RenderPassProgramAA> render_pass_program_aa_highp_;
 406   scoped_ptr<RenderPassMaskProgram> render_pass_mask_program_highp_;
 407   scoped_ptr<RenderPassMaskProgramAA> render_pass_mask_program_aa_highp_;
 408   scoped_ptr<RenderPassColorMatrixProgram>
 409       render_pass_color_matrix_program_highp_;
 410   scoped_ptr<RenderPassColorMatrixProgramAA>
 411       render_pass_color_matrix_program_aa_highp_;
 412   scoped_ptr<RenderPassMaskColorMatrixProgram>
 413       render_pass_mask_color_matrix_program_highp_;
 414   scoped_ptr<RenderPassMaskColorMatrixProgramAA>
 415       render_pass_mask_color_matrix_program_aa_highp_;
 416
 417   scoped_ptr<VideoYUVProgram> video_yuv_program_;
 418   scoped_ptr<VideoYUVAProgram> video_yuva_program_;
 419   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_;
 420
 421   scoped_ptr<VideoYUVProgram> video_yuv_program_highp_;
 422   scoped_ptr<VideoYUVAProgram> video_yuva_program_highp_;
 423   scoped_ptr<VideoStreamTextureProgram> video_stream_texture_program_highp_;
 424
 425   scoped_ptr<DebugBorderProgram> debug_border_program_;
 426   scoped_ptr<SolidColorProgram> solid_color_program_;
 427   scoped_ptr<SolidColorProgramAA> solid_color_program_aa_;
 428
 429   WebKit::WebGraphicsContext3D* context_;
 430
 431   skia::RefPtr<GrContext> gr_context_;
 432   skia::RefPtr<SkCanvas> sk_canvas_;
 433
 434   TextureMailboxDeleter* texture_mailbox_deleter_;
 435
 436   gfx::Rect swap_buffer_rect_;
 437   gfx::Rect scissor_rect_;
 438   gfx::Rect viewport_;
 439   bool is_backbuffer_discarded_;
 440   bool discard_backbuffer_when_not_visible_;
 441   bool is_using_bind_uniform_;
 442   bool visible_;
 443   bool is_scissor_enabled_;
 444   bool stencil_shadow_;
 445   bool blend_shadow_;
 446   unsigned program_shadow_;
 447   TexturedQuadDrawCache draw_cache_;
 448   int highp_threshold_min_;
 449   int highp_threshold_cache_;
 450
 451   struct PendingAsyncReadPixels;
 452   ScopedPtrVector<PendingAsyncReadPixels> pending_async_read_pixels_;
 453
 454   scoped_ptr<ResourceProvider::ScopedWriteLockGL> current_framebuffer_lock_;
 455
 456   scoped_refptr<ResourceProvider::Fence> last_swap_fence_;
 457
 458   SkBitmap on_demand_tile_raster_bitmap_;
 459   ResourceProvider::ResourceId on_demand_tile_raster_resource_id_;
 460
 461   DISALLOW_COPY_AND_ASSIGN(GLRenderer);
 462 };
 463
 464 // Setting DEBUG_GL_CALLS to 1 will call glGetError() after almost every GL
 465 // call made by the compositor. Useful for debugging rendering issues but
 466 // will significantly degrade performance.
 467 #define DEBUG_GL_CALLS 0
 468
 469 #if DEBUG_GL_CALLS && !defined(NDEBUG)
 470 #define GLC(context, x)                                                        \
 471   (x, GLRenderer::DebugGLCall(&* context, #x, __FILE__, __LINE__))
 472 #else
 473 #define GLC(context, x) (x)
 474 #endif
 475
 476 }  // namespace cc
 477
 478 #endif  // CC_OUTPUT_GL_RENDERER_H_