Initial version of external_oes texture support and unit test

include/gpu/GrTypesPriv.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrTypesPriv_DEFINED
 #define GrTypesPriv_DEFINED
 
 #include "GrTypes.h"
 #include "SkTArray.h"
 #include "SkRect.h"
 
 /**
  * Types of shader-language-specific boxed variables we can create. (Currently only GrGLShaderVars,
  * but should be applicable to other shader languages.)
  */
 enum GrSLType {
     kVoid_GrSLType,
     kFloat_GrSLType,
     kVec2f_GrSLType,
     kVec3f_GrSLType,
     kVec4f_GrSLType,
     kMat33f_GrSLType,
     kMat44f_GrSLType,
     kSampler2D_GrSLType,
+    kSamplerExternal_GrSLType,
 
-    kLast_GrSLType = kSampler2D_GrSLType
+    kLast_GrSLType = kSamplerExternal_GrSLType
 };
 static const int kGrSLTypeCount = kLast_GrSLType + 1;
 
 enum GrShaderType {
     kVertex_GrShaderType,
     kGeometry_GrShaderType,
     kFragment_GrShaderType,
 
     kLastkFragment_GrShaderType = kFragment_GrShaderType
 };
@@ skipping 16 matching lines @@
     kLast_GrSLPrecision = kHigh_GrSLPrecision
 };
 
 static const int kGrSLPrecisionCount = kLast_GrSLPrecision + 1;
 
 /**
  * Gets the vector size of the SLType. Returns -1 for void, matrices, and samplers.
  */
 static inline int GrSLTypeVectorCount(GrSLType type) {
     SkASSERT(type >= 0 && type < static_cast<GrSLType>(kGrSLTypeCount));
-    static const int kCounts[] = { -1, 1, 2, 3, 4, -1, -1, -1 };
+    static const int kCounts[] = { -1, 1, 2, 3, 4, -1, -1, -1, -1 };
     return kCounts[type];
 
     GR_STATIC_ASSERT(0 == kVoid_GrSLType);
     GR_STATIC_ASSERT(1 == kFloat_GrSLType);
     GR_STATIC_ASSERT(2 == kVec2f_GrSLType);
     GR_STATIC_ASSERT(3 == kVec3f_GrSLType);
     GR_STATIC_ASSERT(4 == kVec4f_GrSLType);
     GR_STATIC_ASSERT(5 == kMat33f_GrSLType);
     GR_STATIC_ASSERT(6 == kMat44f_GrSLType);
     GR_STATIC_ASSERT(7 == kSampler2D_GrSLType);
+    GR_STATIC_ASSERT(8 == kSamplerExternal_GrSLType);
     GR_STATIC_ASSERT(SK_ARRAY_COUNT(kCounts) == kGrSLTypeCount);
 }
 
 /** Return the type enum for a vector of floats of length n (1..4),
  e.g. 1 -> kFloat_GrSLType, 2 -> kVec2_GrSLType, ... */
 static inline GrSLType GrSLFloatVectorType(int count) {
     SkASSERT(count > 0 && count <= 4);
     return (GrSLType)(count);
 
     GR_STATIC_ASSERT(kFloat_GrSLType == 1);
     GR_STATIC_ASSERT(kVec2f_GrSLType == 2);
     GR_STATIC_ASSERT(kVec3f_GrSLType == 3);
     GR_STATIC_ASSERT(kVec4f_GrSLType == 4);
 }
 
 /** Is the shading language type floating point (or vector/matrix of fp)? */
 static inline bool GrSLTypeIsFloatType(GrSLType type) {
     SkASSERT(type >= 0 && type < static_cast<GrSLType>(kGrSLTypeCount));
     return type >= 1 && type <= 6;
 
     GR_STATIC_ASSERT(0 == kVoid_GrSLType);
     GR_STATIC_ASSERT(1 == kFloat_GrSLType);
     GR_STATIC_ASSERT(2 == kVec2f_GrSLType);
     GR_STATIC_ASSERT(3 == kVec3f_GrSLType);
     GR_STATIC_ASSERT(4 == kVec4f_GrSLType);
     GR_STATIC_ASSERT(5 == kMat33f_GrSLType);
     GR_STATIC_ASSERT(6 == kMat44f_GrSLType);
     GR_STATIC_ASSERT(7 == kSampler2D_GrSLType);
-    GR_STATIC_ASSERT(8 == kGrSLTypeCount);
+    GR_STATIC_ASSERT(8 == kSamplerExternal_GrSLType);
+    GR_STATIC_ASSERT(9 == kGrSLTypeCount);
 }
 //////////////////////////////////////////////////////////////////////////////
 
 /**
  * Types used to describe format of vertices in arrays.
   */
 enum GrVertexAttribType {
     kFloat_GrVertexAttribType = 0,
     kVec2f_GrVertexAttribType,
     kVec3f_GrVertexAttribType,
@@ skipping 152 matching lines @@
 // Takes a pointer to a GrCaps, and will suppress prints if required
 #define GrCapsDebugf(caps, ...)         \
     if (!caps->suppressPrints()) {      \
         SkDebugf(__VA_ARGS__);          \
     }
 #else
 #define GrCapsDebugf(caps, ...)
 #endif
 
 #endif