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Diffstat (limited to 'src/3rdparty/angle/src/common/shadervars.h')
-rw-r--r-- | src/3rdparty/angle/src/common/shadervars.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/common/shadervars.h b/src/3rdparty/angle/src/common/shadervars.h new file mode 100644 index 0000000000..0442d81500 --- /dev/null +++ b/src/3rdparty/angle/src/common/shadervars.h @@ -0,0 +1,157 @@ +// +// 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. +// +// shadervars.h: +// Types to represent GL variables (varyings, uniforms, etc) +// + +#ifndef COMMON_SHADERVARIABLE_H_ +#define COMMON_SHADERVARIABLE_H_ + +#include <string> +#include <vector> +#include <algorithm> +#include "GLSLANG/ShaderLang.h" + +namespace sh +{ + +// Varying interpolation qualifier, see section 4.3.9 of the ESSL 3.00.4 spec +enum InterpolationType +{ + INTERPOLATION_SMOOTH, + INTERPOLATION_CENTROID, + INTERPOLATION_FLAT +}; + +// Uniform block layout qualifier, see section 4.3.8.3 of the ESSL 3.00.4 spec +enum BlockLayoutType +{ + BLOCKLAYOUT_STANDARD, + BLOCKLAYOUT_PACKED, + BLOCKLAYOUT_SHARED +}; + +// Base class for all variables defined in shaders, including Varyings, Uniforms, etc +struct ShaderVariable +{ + ShaderVariable() + : type(0), + precision(0), + arraySize(0), + staticUse(false) + {} + + ShaderVariable(GLenum typeIn, GLenum precisionIn, const char *nameIn, unsigned int arraySizeIn) + : type(typeIn), + precision(precisionIn), + name(nameIn), + arraySize(arraySizeIn), + staticUse(false) + {} + + bool isArray() const { return arraySize > 0; } + unsigned int elementCount() const { return std::max(1u, arraySize); } + + GLenum type; + GLenum precision; + std::string name; + std::string mappedName; + unsigned int arraySize; + bool staticUse; +}; + +struct Uniform : public ShaderVariable +{ + Uniform() + {} + + Uniform(GLenum typeIn, GLenum precisionIn, const char *nameIn, unsigned int arraySizeIn) + : ShaderVariable(typeIn, precisionIn, nameIn, arraySizeIn) + {} + + bool isStruct() const { return !fields.empty(); } + + std::vector<Uniform> fields; +}; + +struct Attribute : public ShaderVariable +{ + Attribute() + : location(-1) + {} + + Attribute(GLenum typeIn, GLenum precisionIn, const char *nameIn, unsigned int arraySizeIn, int locationIn) + : ShaderVariable(typeIn, precisionIn, nameIn, arraySizeIn), + location(locationIn) + {} + + int location; +}; + +struct InterfaceBlockField : public ShaderVariable +{ + InterfaceBlockField() + : isRowMajorMatrix(false) + {} + + InterfaceBlockField(GLenum typeIn, GLenum precisionIn, const char *nameIn, unsigned int arraySizeIn, bool isRowMajorMatrix) + : ShaderVariable(typeIn, precisionIn, nameIn, arraySizeIn), + isRowMajorMatrix(isRowMajorMatrix) + {} + + bool isStruct() const { return !fields.empty(); } + + bool isRowMajorMatrix; + std::vector<InterfaceBlockField> fields; +}; + +struct Varying : public ShaderVariable +{ + Varying() + : interpolation(INTERPOLATION_SMOOTH) + {} + + Varying(GLenum typeIn, GLenum precisionIn, const char *nameIn, unsigned int arraySizeIn, InterpolationType interpolationIn) + : ShaderVariable(typeIn, precisionIn, nameIn, arraySizeIn), + interpolation(interpolationIn) + {} + + bool isStruct() const { return !fields.empty(); } + + InterpolationType interpolation; + std::vector<Varying> fields; + std::string structName; +}; + +struct InterfaceBlock +{ + InterfaceBlock() + : arraySize(0), + layout(BLOCKLAYOUT_PACKED), + isRowMajorLayout(false), + staticUse(false) + {} + + InterfaceBlock(const char *name, unsigned int arraySize) + : name(name), + arraySize(arraySize), + layout(BLOCKLAYOUT_SHARED), + isRowMajorLayout(false), + staticUse(false) + {} + + std::string name; + std::string mappedName; + unsigned int arraySize; + BlockLayoutType layout; + bool isRowMajorLayout; + bool staticUse; + std::vector<InterfaceBlockField> fields; +}; + +} + +#endif // COMMON_SHADERVARIABLE_H_ |