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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /gfx/angle/src/compiler/translator/blocklayout.h | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'gfx/angle/src/compiler/translator/blocklayout.h')
-rwxr-xr-x | gfx/angle/src/compiler/translator/blocklayout.h | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/gfx/angle/src/compiler/translator/blocklayout.h b/gfx/angle/src/compiler/translator/blocklayout.h new file mode 100755 index 000000000..298a72c92 --- /dev/null +++ b/gfx/angle/src/compiler/translator/blocklayout.h @@ -0,0 +1,103 @@ +// +// Copyright (c) 2013-2014 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// +// blocklayout.h: +// Methods and classes related to uniform layout and packing in GLSL and HLSL. +// + +#ifndef COMMON_BLOCKLAYOUT_H_ +#define COMMON_BLOCKLAYOUT_H_ + +#include <cstddef> +#include <vector> + +#include "angle_gl.h" +#include <GLSLANG/ShaderLang.h> + +namespace sh +{ +struct ShaderVariable; +struct InterfaceBlockField; +struct Uniform; +struct Varying; +struct InterfaceBlock; + +struct BlockMemberInfo +{ + BlockMemberInfo() : offset(-1), arrayStride(-1), matrixStride(-1), isRowMajorMatrix(false) {} + + BlockMemberInfo(int offset, int arrayStride, int matrixStride, bool isRowMajorMatrix) + : offset(offset), + arrayStride(arrayStride), + matrixStride(matrixStride), + isRowMajorMatrix(isRowMajorMatrix) + {} + + static BlockMemberInfo getDefaultBlockInfo() + { + return BlockMemberInfo(-1, -1, -1, false); + } + + int offset; + int arrayStride; + int matrixStride; + bool isRowMajorMatrix; +}; + +class BlockLayoutEncoder +{ + public: + BlockLayoutEncoder(); + virtual ~BlockLayoutEncoder() {} + + BlockMemberInfo encodeType(GLenum type, unsigned int arraySize, bool isRowMajorMatrix); + + size_t getBlockSize() const { return mCurrentOffset * BytesPerComponent; } + + virtual void enterAggregateType() = 0; + virtual void exitAggregateType() = 0; + + static const size_t BytesPerComponent = 4u; + static const unsigned int ComponentsPerRegister = 4u; + + static size_t getBlockRegister(const BlockMemberInfo &info); + static size_t getBlockRegisterElement(const BlockMemberInfo &info); + + protected: + size_t mCurrentOffset; + + void nextRegister(); + + virtual void getBlockLayoutInfo(GLenum type, unsigned int arraySize, bool isRowMajorMatrix, int *arrayStrideOut, int *matrixStrideOut) = 0; + virtual void advanceOffset(GLenum type, unsigned int arraySize, bool isRowMajorMatrix, int arrayStride, int matrixStride) = 0; +}; + +// Block layout according to the std140 block layout +// See "Standard Uniform Block Layout" in Section 2.11.6 of the OpenGL ES 3.0 specification + +class Std140BlockEncoder : public BlockLayoutEncoder +{ + public: + Std140BlockEncoder(); + + void enterAggregateType() override; + void exitAggregateType() override; + + protected: + void getBlockLayoutInfo(GLenum type, + unsigned int arraySize, + bool isRowMajorMatrix, + int *arrayStrideOut, + int *matrixStrideOut) override; + void advanceOffset(GLenum type, + unsigned int arraySize, + bool isRowMajorMatrix, + int arrayStride, + int matrixStride) override; +}; + +} + +#endif // COMMON_BLOCKLAYOUT_H_ |