Initial work to get ETC1 data up to the GPU

src/gpu/GrGpu.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 GrGpu_DEFINED
 #define GrGpu_DEFINED
 
@@ skipping 69 matching lines @@
      * @param srcData     texel data to load texture. Begins with full-size
      *                    palette data for paletted textures. Contains width*
      *                    height texels. If NULL texture data is uninitialized.
      *
      * @return    The texture object if successful, otherwise NULL.
      */
     GrTexture* createTexture(const GrTextureDesc& desc,
                              const void* srcData, size_t rowBytes);
 
     /**
+     * Creates a compressed texture object. If desc width or height is not a power of
+     * two but underlying API requires a power of two texture then this function will
+     * return NULL.
+     *
+     * The kRenderTarget_TextureFlag should not be specified
+     *
+     * @param desc        describes the texture to be created.

[robertphillips, 2014/05/27 22:01:50]

Mention its compressedness ?

[krajcevski, 2014/05/27 22:19:29]

Done.

+     * @param srcData     texel data to load texture. The size of the data is expected
+     *                    to be large enough to hold as much data as the format expects
+     *                    with respect to the width and height.

[robertphillips, 2014/05/27 22:01:50]

format ?

[krajcevski, 2014/05/27 22:19:29]

Done.

[krajcevski, 2014/05/27 22:19:29]

Done.

+     *
+     * @return    The texture object if successful, otherwise NULL.
+     */
+    GrTexture* createCompressedTexture(const GrTextureDesc& desc,
+                                       const void* srcData, GrCompressedFormat format);
+
+    /**
      * Implements GrContext::wrapBackendTexture
      */
     GrTexture* wrapBackendTexture(const GrBackendTextureDesc&);
 
     /**
      * Implements GrContext::wrapBackendTexture
      */
     GrRenderTarget* wrapBackendRenderTarget(const GrBackendRenderTargetDesc&);
 
     /**
@@ skipping 307 matching lines @@
 
 
     // called when the 3D context state is unknown. Subclass should emit any
     // assumed 3D context state and dirty any state cache.
     virtual void onResetContext(uint32_t resetBits) = 0;
 
     // overridden by backend-specific derived class to create objects.
     virtual GrTexture* onCreateTexture(const GrTextureDesc& desc,
                                        const void* srcData,
                                        size_t rowBytes) = 0;
+    virtual GrTexture* onCreateCompressedTexture(const GrTextureDesc& desc,
+                                                 const void* srcData,
+                                                 GrCompressedFormat format) = 0;
     virtual GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&) = 0;
     virtual GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&) = 0;
     virtual GrVertexBuffer* onCreateVertexBuffer(size_t size, bool dynamic) = 0;
     virtual GrIndexBuffer* onCreateIndexBuffer(size_t size, bool dynamic) = 0;
     virtual GrPath* onCreatePath(const SkPath& path, const SkStrokeRec&) = 0;
 
     // overridden by backend-specific derived class to perform the clear and
     // clearRect. NULL rect means clear whole target. If canIgnoreRect is
     // true, it is okay to perform a full clear instead of a partial clear
     virtual void onClear(const SkIRect* rect, GrColor color, bool canIgnoreRect) = 0;
@@ skipping 87 matching lines @@
     // these are mutable so they can be created on-demand
     mutable GrIndexBuffer*                                              fQuadIndexBuffer;
     // Used to abandon/release all resources created by this GrGpu. TODO: Move this
     // functionality to GrResourceCache.
     ObjectList                                                          fObjectList;
 
     typedef GrDrawTarget INHERITED;
 };
 
 #endif