Add support for 2x2 matrices

src/gpu/vk/GrVkProgramDataManager.h

 /*
 * Copyright 2016 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #ifndef GrVkProgramDataManager_DEFINED
 #define GrVkProgramDataManager_DEFINED
 
@@ skipping 15 matching lines @@
     void set1f(UniformHandle, float v0) const override;
     void set1fv(UniformHandle, int arrayCount, const float v[]) const override;
     void set2f(UniformHandle, float, float) const override;
     void set2fv(UniformHandle, int arrayCount, const float v[]) const override;
     void set3f(UniformHandle, float, float, float) const override;
     void set3fv(UniformHandle, int arrayCount, const float v[]) const override;
     void set4f(UniformHandle, float, float, float, float) const override;
     void set4fv(UniformHandle, int arrayCount, const float v[]) const override;
     // matrices are column-major, the first two upload a single matrix, the latter two upload
     // arrayCount matrices into a uniform array.
+    void setMatrix2f(UniformHandle, const float matrix[]) const override;
     void setMatrix3f(UniformHandle, const float matrix[]) const override;
     void setMatrix4f(UniformHandle, const float matrix[]) const override;
+    void setMatrix2fv(UniformHandle, int arrayCount, const float matrices[]) const override;
     void setMatrix3fv(UniformHandle, int arrayCount, const float matrices[]) const override;
     void setMatrix4fv(UniformHandle, int arrayCount, const float matrices[]) const override;
 
     // for nvpr only
     void setPathFragmentInputTransform(VaryingHandle u, int components,
                                        const SkMatrix& matrix) const override {
         SkFAIL("Only supported in NVPR, which is not in vulkan");
     }
 
     void uploadUniformBuffers(const GrVkGpu* gpu,
                               GrVkUniformBuffer* vertexBuffer,
                               GrVkUniformBuffer* fragmentBuffer) const;
 private:
     struct Uniform {
         uint32_t fBinding;
         uint32_t fOffset;
         SkDEBUGCODE(
             GrSLType    fType;
             int         fArrayCount;
             uint32_t    fSetNumber;
         );
     };
 
+    template<int N> inline void setMatrices(UniformHandle, int arrayCount,
+                                            const float matrices[]) const;
+
     uint32_t fVertexUniformSize;
     uint32_t fFragmentUniformSize;
 
     SkTArray<Uniform, true> fUniforms;
 
     mutable SkAutoMalloc fVertexUniformData;
     mutable SkAutoMalloc fFragmentUniformData;
 };
 
 #endif