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| 1 /* |
| 2 * Copyright 2016 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrVkUniformHandler_DEFINED |
| 9 #define GrVkUniformHandler_DEFINED |
| 10 |
| 11 #include "glsl/GrGLSLUniformHandler.h" |
| 12 |
| 13 #include "GrAllocator.h" |
| 14 #include "glsl/GrGLSLShaderVar.h" |
| 15 |
| 16 static const int kUniformsPerBlock = 8; |
| 17 |
| 18 class GrVkUniformHandler : public GrGLSLUniformHandler { |
| 19 public: |
| 20 enum { |
| 21 kSamplerDescSet = 0, |
| 22 kUniformBufferDescSet = 1, |
| 23 }; |
| 24 enum { |
| 25 kVertexBinding = 0, |
| 26 kFragBinding = 1, |
| 27 }; |
| 28 |
| 29 // fUBOffset is only valid if the GrSLType of the fVariable is not a sampler |
| 30 struct UniformInfo { |
| 31 GrGLSLShaderVar fVariable; |
| 32 uint32_t fVisibility; |
| 33 uint32_t fSetNumber; |
| 34 uint32_t fBinding; |
| 35 uint32_t fUBOffset; |
| 36 }; |
| 37 typedef GrTAllocator<UniformInfo> UniformInfoArray; |
| 38 |
| 39 const GrGLSLShaderVar& getUniformVariable(UniformHandle u) const override { |
| 40 return fUniforms[u.toIndex()].fVariable; |
| 41 } |
| 42 |
| 43 const char* getUniformCStr(UniformHandle u) const override { |
| 44 return this->getUniformVariable(u).c_str(); |
| 45 } |
| 46 |
| 47 private: |
| 48 explicit GrVkUniformHandler(GrGLSLProgramBuilder* program) |
| 49 : INHERITED(program) |
| 50 , fUniforms(kUniformsPerBlock) |
| 51 , fCurrentVertexUBOOffset(0) |
| 52 , fCurrentFragmentUBOOffset(0) |
| 53 , fCurrentSamplerBinding(0) { |
| 54 } |
| 55 |
| 56 UniformHandle internalAddUniformArray(uint32_t visibility, |
| 57 GrSLType type, |
| 58 GrSLPrecision precision, |
| 59 const char* name, |
| 60 bool mangleName, |
| 61 int arrayCount, |
| 62 const char** outName) override; |
| 63 |
| 64 void appendUniformDecls(GrShaderFlags, SkString*) const override; |
| 65 |
| 66 bool hasVertexUniforms() const { return fCurrentVertexUBOOffset > 0; } |
| 67 bool hasFragmentUniforms() const { return fCurrentFragmentUBOOffset > 0; } |
| 68 |
| 69 |
| 70 const UniformInfo& getUniformInfo(UniformHandle u) const { |
| 71 return fUniforms[u.toIndex()]; |
| 72 } |
| 73 |
| 74 |
| 75 UniformInfoArray fUniforms; |
| 76 uint32_t fCurrentVertexUBOOffset; |
| 77 uint32_t fCurrentFragmentUBOOffset; |
| 78 uint32_t fCurrentSamplerBinding; |
| 79 |
| 80 friend class GrVkProgramBuilder; |
| 81 |
| 82 typedef GrGLSLUniformHandler INHERITED; |
| 83 }; |
| 84 |
| 85 #endif |
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