Initial work to get ETC1 data up to the GPU

src/gpu/gl/GrGpuGL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpuGL_DEFINED
 #define GrGpuGL_DEFINED
 
@@ skipping 106 matching lines @@
                                   const SkIRect& srcRect,
                                   const SkIPoint& dstPoint) SK_OVERRIDE;
 
 private:
     // GrGpu overrides
     virtual void onResetContext(uint32_t resetBits) SK_OVERRIDE;
 
     virtual GrTexture* onCreateTexture(const GrTextureDesc& desc,
                                        const void* srcData,
                                        size_t rowBytes) SK_OVERRIDE;
+    virtual GrTexture* onCreateCompressedTexture(const GrTextureDesc& desc,
+                                                 const void* srcData,
+                                                 GrCompressedFormat format) SK_OVERRIDE;
     virtual GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) SK_OVERRIDE;
     virtual GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) SK_OVERRIDE;
     virtual GrPath* onCreatePath(const SkPath&, const SkStrokeRec&) SK_OVERRIDE;
     virtual GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) SK_OVERRIDE;
     virtual GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&) SK_OVERRIDE;
     virtual bool createStencilBufferForRenderTarget(GrRenderTarget* rt,
                                                     int width,
                                                     int height) SK_OVERRIDE;
     virtual bool attachStencilBufferToRenderTarget(
         GrStencilBuffer* sb,
@@ skipping 121 matching lines @@
                            GrGLenum* externalFormat,
                            GrGLenum* externalType);
     // helper for onCreateTexture and writeTexturePixels
     bool uploadTexData(const GrGLTexture::Desc& desc,
                        bool isNewTexture,
                        int left, int top, int width, int height,
                        GrPixelConfig dataConfig,
                        const void* data,
                        size_t rowBytes);
 
+    // helper for onCreateCompressedTexture
+    bool compressedFormatToGLFormats(GrCompressedFormat fmt, GrGLenum* internalFormat);
+    bool uploadCompressedTexData(const GrGLTexture::Desc& desc,
+                                 GrCompressedFormat fmt,
+                                 const void* data);
+
     bool createRenderTargetObjects(int width, int height,
                                    GrGLuint texID,
                                    GrGLRenderTarget::Desc* desc);
 
     GrGLContext fGLContext;
 
     // GL program-related state
     ProgramCache*               fProgramCache;
     SkAutoTUnref<GrGLProgram>   fCurrentProgram;
 
@@ skipping 178 matching lines @@
     ///@}
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
 };
 
 #endif