Add vulkan files into skia repo.

src/gpu/vk/GrVkProgramBuilder.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 GrVkProgramBuilder_DEFINED
+#define GrVkProgramBuilder_DEFINED
+
+#include "glsl/GrGLSLProgramBuilder.h"
+
+#include "GrPipeline.h"
+#include "vk/GrVkUniformHandler.h"
+#include "vk/GrVkVaryingHandler.h"
+
+#include "shaderc/shaderc.h"
+#include "vulkan/vulkan.h"
+
+class GrVkGpu;
+class GrVkRenderPass;
+class GrVkProgram;
+
+class GrVkProgramBuilder : public GrGLSLProgramBuilder {
+public:
+    /** Generates a shader program.
+    *
+    * The program implements what is specified in the stages given as input.
+    * After successful generation, the builder result objects are available
+    * to be used.
+    * @return true if generation was successful.
+    */
+    static GrVkProgram* CreateProgram(GrVkGpu*,
+                                      const DrawArgs&,
+                                      GrPrimitiveType,
+                                      const GrVkRenderPass& renderPass);
+
+    const GrCaps* caps() const override;
+    const GrGLSLCaps* glslCaps() const override;
+
+    GrVkGpu* gpu() const { return fGpu; }
+
+    void finalizeFragmentOutputColor(GrGLSLShaderVar& outputColor) override;
+
+private:
+    GrVkProgramBuilder(GrVkGpu*, const DrawArgs&);
+
+    void emitSamplers(const GrProcessor&,
+                      GrGLSLTextureSampler::TextureSamplerArray* outSamplers) override;
+
+    GrVkProgram* finalize(const DrawArgs& args,
+                          GrPrimitiveType primitiveType,
+                          const GrVkRenderPass& renderPass);
+
+    static bool CreateVkShaderModule(const GrVkGpu* gpu,
+                                     VkShaderStageFlagBits stage,
+                                     const GrGLSLShaderBuilder& builder,
+                                     VkShaderModule* shaderModule,
+                                     VkPipelineShaderStageCreateInfo* stageInfo);
+
+    GrGLSLUniformHandler* uniformHandler() override { return &fUniformHandler; }
+    const GrGLSLUniformHandler* uniformHandler() const override { return &fUniformHandler; }
+    GrGLSLVaryingHandler* varyingHandler() override { return &fVaryingHandler; }
+
+    GrVkGpu* fGpu;
+    GrVkVaryingHandler        fVaryingHandler;
+    GrVkUniformHandler        fUniformHandler;
+
+    SkTArray<UniformHandle>   fSamplerUniforms;
+
+    typedef GrGLSLProgramBuilder INHERITED;
+};
+
+#endif