Add support for vertex and geometry shader textures

include/gpu/GrTexture.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 GrTexture_DEFINED
 #define GrTexture_DEFINED
 
 #include "GrSurface.h"
 #include "SkPoint.h"
 #include "SkRefCnt.h"
 
 class GrTextureParams;
 class GrTexturePriv;
 
 class GrTexture : virtual public GrSurface {
 public:
     GrTexture* asTexture() override { return this; }
     const GrTexture* asTexture() const override { return this; }
 
     /**
+     *  Returns the sampler type used to access this texture in a shader.
+     */
+    virtual GrSLType getSamplerType() const = 0;
+
+    /**
      *  Return the native ID or handle to the texture, depending on the
      *  platform. e.g. on OpenGL, return the texture ID.
      */
     virtual GrBackendObject getTextureHandle() const = 0;
 
     /**
      * This function indicates that the texture parameters (wrap mode, filtering, ...) have been
      * changed externally to Skia.
      */
     virtual void textureParamsModified() = 0;
@@ skipping 26 matching lines @@
 
     MipMapsStatus   fMipMapsStatus;
     int fMaxMipMapLevel;
 
     friend class GrTexturePriv;
 
     typedef GrSurface INHERITED;
 };
 
 #endif