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bgfx_compute.sh
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bgfx_compute.sh
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/*
* Copyright 2011-2024 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx/blob/master/LICENSE
*/
#ifndef BGFX_COMPUTE_H_HEADER_GUARD
#define BGFX_COMPUTE_H_HEADER_GUARD
#include "bgfx_shader.sh"
#ifndef __cplusplus
#if BGFX_SHADER_LANGUAGE_HLSL > 0 && BGFX_SHADER_LANGUAGE_HLSL < 400
# error "Compute is not supported!"
#endif // BGFX_SHADER_LANGUAGE_HLSL
#if BGFX_SHADER_LANGUAGE_METAL || BGFX_SHADER_LANGUAGE_SPIRV
# define FORMAT(_format) [[spv::format_ ## _format]]
# define WRITEONLY [[spv::nonreadable]]
#else
# define FORMAT(_format)
# define WRITEONLY
#endif // BGFX_SHADER_LANGUAGE_METAL || BGFX_SHADER_LANGUAGE_SPIRV
#if BGFX_SHADER_LANGUAGE_GLSL
#define SHARED shared
#define __IMAGE_XX(_name, _format, _reg, _image, _access) \
layout(_format, binding=_reg) _access uniform highp _image _name
#define readwrite
#define IMAGE2D_RO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2D, readonly)
#define UIMAGE2D_RO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2D, readonly)
#define IMAGE2D_WO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2D, writeonly)
#define UIMAGE2D_WO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2D, writeonly)
#define IMAGE2D_RW( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2D, readwrite)
#define UIMAGE2D_RW(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2D, readwrite)
#define IMAGE2D_ARRAY_RO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2DArray, readonly)
#define UIMAGE2D_ARRAY_RO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2DArray, readonly)
#define IMAGE2D_ARRAY_WO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2DArray, writeonly)
#define UIMAGE2D_ARRAY_WO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2DArray, writeonly)
#define IMAGE2D_ARRAY_RW( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image2DArray, readwrite)
#define UIMAGE2D_ARRAY_RW(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage2DArray, readwrite)
#define IMAGE3D_RO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image3D, readonly)
#define UIMAGE3D_RO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage3D, readonly)
#define IMAGE3D_WO( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image3D, writeonly)
#define UIMAGE3D_WO(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage3D, writeonly)
#define IMAGE3D_RW( _name, _format, _reg) __IMAGE_XX(_name, _format, _reg, image3D, readwrite)
#define UIMAGE3D_RW(_name, _format, _reg) __IMAGE_XX(_name, _format, _reg, uimage3D, readwrite)
#define __BUFFER_XX(_name, _type, _reg, _access) \
layout(std430, binding=_reg) _access buffer _name ## Buffer \
{ \
_type _name[]; \
}
#define BUFFER_RO(_name, _type, _reg) __BUFFER_XX(_name, _type, _reg, readonly)
#define BUFFER_RW(_name, _type, _reg) __BUFFER_XX(_name, _type, _reg, readwrite)
#define BUFFER_WO(_name, _type, _reg) __BUFFER_XX(_name, _type, _reg, writeonly)
#define NUM_THREADS(_x, _y, _z) layout (local_size_x = _x, local_size_y = _y, local_size_z = _z) in;
#define atomicFetchAndAdd(_mem, _data, _original) _original = atomicAdd(_mem, _data)
#define atomicFetchAndAnd(_mem, _data, _original) _original = atomicAnd(_mem, _data)
#define atomicFetchAndMax(_mem, _data, _original) _original = atomicMax(_mem, _data)
#define atomicFetchAndMin(_mem, _data, _original) _original = atomicMin(_mem, _data)
#define atomicFetchAndOr(_mem, _data, _original) _original = atomicOr(_mem, _data)
#define atomicFetchAndXor(_mem, _data, _original) _original = atomicXor(_mem, _data)
#define atomicFetchAndExchange(_mem, _data, _original) _original = atomicExchange(_mem, _data)
#define atomicFetchCompareExchange(_mem, _compare, _data, _original) _original = atomicCompSwap(_mem,_compare, _data)
#else
#define SHARED groupshared
#define COMP_r32ui uint
#define COMP_rg32ui uint2
#define COMP_rgba32ui uint4
#define COMP_r32f float
#define COMP_r16f float
#define COMP_rg16f float2
#define COMP_rgba16f float4
#if BGFX_SHADER_LANGUAGE_HLSL
# define COMP_rgba8 unorm float4
# define COMP_rg8 unorm float2
# define COMP_r8 unorm float
#else
# define COMP_rgba8 float4
# define COMP_rg8 float2
# define COMP_r8 float
#endif // BGFX_SHADER_LANGUAGE_HLSL
#define COMP_rgba32f float4
#define IMAGE2D_RO( _name, _format, _reg) \
FORMAT(_format) Texture2D<COMP_ ## _format> _name : REGISTER(t, _reg); \
#define UIMAGE2D_RO(_name, _format, _reg) IMAGE2D_RO(_name, _format, _reg)
#define IMAGE2D_WO( _name, _format, _reg) \
WRITEONLY FORMAT(_format) RWTexture2D<COMP_ ## _format> _name : REGISTER(u, _reg); \
#define UIMAGE2D_WO(_name, _format, _reg) IMAGE2D_WO(_name, _format, _reg)
#define IMAGE2D_RW( _name, _format, _reg) \
FORMAT(_format) RWTexture2D<COMP_ ## _format> _name : REGISTER(u, _reg); \
#define UIMAGE2D_RW(_name, _format, _reg) IMAGE2D_RW(_name, _format, _reg)
#define IMAGE2D_ARRAY_RO(_name, _format, _reg) \
FORMAT(_format) Texture2DArray<COMP_ ## _format> _name : REGISTER(t, _reg); \
#define UIMAGE2D_ARRAY_RO(_name, _format, _reg) IMAGE2D_ARRAY_RO(_name, _format, _reg)
#define IMAGE2D_ARRAY_WO( _name, _format, _reg) \
WRITEONLY FORMAT(_format) RWTexture2DArray<COMP_ ## _format> _name : REGISTER(u, _reg); \
#define UIMAGE2D_ARRAY_WO(_name, _format, _reg) IMAGE2D_ARRAY_WO(_name, _format, _reg)
#define IMAGE2D_ARRAY_RW(_name, _format, _reg) \
FORMAT(_format) RWTexture2DArray<COMP_ ## _format> _name : REGISTER(u, _reg); \
#define UIMAGE2D_ARRAY_RW(_name, _format, _reg) IMAGE2D_ARRAY_RW(_name, _format, _reg)
#define IMAGE3D_RO( _name, _format, _reg) \
FORMAT(_format) Texture3D<COMP_ ## _format> _name : REGISTER(t, _reg);
#define UIMAGE3D_RO(_name, _format, _reg) IMAGE3D_RO(_name, _format, _reg)
#define IMAGE3D_WO( _name, _format, _reg) \
WRITEONLY FORMAT(_format) RWTexture3D<COMP_ ## _format> _name : REGISTER(u, _reg);
#define UIMAGE3D_WO(_name, _format, _reg) IMAGE3D_RW(_name, _format, _reg)
#define IMAGE3D_RW( _name, _format, _reg) \
FORMAT(_format) RWTexture3D<COMP_ ## _format> _name : REGISTER(u, _reg); \
#define UIMAGE3D_RW(_name, _format, _reg) IMAGE3D_RW(_name, _format, _reg)
#if BGFX_SHADER_LANGUAGE_METAL || BGFX_SHADER_LANGUAGE_SPIRV
#define BUFFER_RO(_name, _struct, _reg) StructuredBuffer<_struct> _name : REGISTER(t, _reg)
#define BUFFER_RW(_name, _struct, _reg) RWStructuredBuffer <_struct> _name : REGISTER(u, _reg)
#define BUFFER_WO(_name, _struct, _reg) BUFFER_RW(_name, _struct, _reg)
#else
#define BUFFER_RO(_name, _struct, _reg) Buffer<_struct> _name : REGISTER(t, _reg)
#define BUFFER_RW(_name, _struct, _reg) RWBuffer<_struct> _name : REGISTER(u, _reg)
#define BUFFER_WO(_name, _struct, _reg) BUFFER_RW(_name, _struct, _reg)
#endif
#define NUM_THREADS(_x, _y, _z) [numthreads(_x, _y, _z)]
#define __IMAGE_IMPL_A(_format, _storeComponents, _type, _loadComponents) \
_type imageLoad(Texture2D<_format> _image, ivec2 _uv) \
{ \
return _image[_uv]._loadComponents; \
} \
\
ivec2 imageSize(Texture2D<_format> _image) \
{ \
uvec2 result; \
_image.GetDimensions(result.x, result.y); \
return ivec2(result); \
} \
\
_type imageLoad(RWTexture2D<_format> _image, ivec2 _uv) \
{ \
return _image[_uv]._loadComponents; \
} \
\
void imageStore(RWTexture2D<_format> _image, ivec2 _uv, _type _value) \
{ \
_image[_uv] = _value._storeComponents; \
} \
\
ivec2 imageSize(RWTexture2D<_format> _image) \
{ \
uvec2 result; \
_image.GetDimensions(result.x, result.y); \
return ivec2(result); \
} \
\
_type imageLoad(Texture2DArray<_format> _image, ivec3 _uvw) \
{ \
return _image[_uvw]._loadComponents; \
} \
\
ivec3 imageSize(Texture2DArray<_format> _image) \
{ \
uvec3 result; \
_image.GetDimensions(result.x, result.y, result.z); \
return ivec3(result); \
} \
\
_type imageLoad(RWTexture2DArray<_format> _image, ivec3 _uvw) \
{ \
return _image[_uvw]._loadComponents; \
} \
\
void imageStore(RWTexture2DArray<_format> _image, ivec3 _uvw, _type _value) \
{ \
_image[_uvw] = _value._storeComponents; \
} \
\
ivec3 imageSize(RWTexture2DArray<_format> _image) \
{ \
uvec3 result; \
_image.GetDimensions(result.x, result.y, result.z); \
return ivec3(result); \
} \
\
_type imageLoad(Texture3D<_format> _image, ivec3 _uvw) \
{ \
return _image[_uvw]._loadComponents; \
} \
\
ivec3 imageSize(Texture3D<_format> _image) \
{ \
uvec3 result; \
_image.GetDimensions(result.x, result.y, result.z); \
return ivec3(result); \
} \
\
_type imageLoad(RWTexture3D<_format> _image, ivec3 _uvw) \
{ \
return _image[_uvw]._loadComponents; \
} \
\
void imageStore(RWTexture3D<_format> _image, ivec3 _uvw, _type _value) \
{ \
_image[_uvw] = _value._storeComponents; \
} \
\
ivec3 imageSize(RWTexture3D<_format> _image) \
{ \
uvec3 result; \
_image.GetDimensions(result.x, result.y, result.z); \
return ivec3(result); \
}
#define __IMAGE_IMPL_ATOMIC(_format, _storeComponents, _type, _loadComponents) \
\
void imageAtomicAdd(RWTexture2D<_format> _image, ivec2 _uv, _type _value) \
{ \
InterlockedAdd(_image[_uv], _value._storeComponents); \
} \
__IMAGE_IMPL_A(float, x, vec4, xxxx)
__IMAGE_IMPL_A(float2, xy, vec4, xyyy)
__IMAGE_IMPL_A(float4, xyzw, vec4, xyzw)
__IMAGE_IMPL_A(uint, x, uvec4, xxxx)
__IMAGE_IMPL_A(uint2, xy, uvec4, xyyy)
__IMAGE_IMPL_A(uint4, xyzw, uvec4, xyzw)
#if BGFX_SHADER_LANGUAGE_HLSL
__IMAGE_IMPL_A(unorm float, x, vec4, xxxx)
__IMAGE_IMPL_A(unorm float2, xy, vec4, xyyy)
__IMAGE_IMPL_A(unorm float4, xyzw, vec4, xyzw)
#endif
__IMAGE_IMPL_ATOMIC(uint, x, uvec4, xxxx)
#define atomicAdd(_mem, _data) InterlockedAdd(_mem, _data)
#define atomicAnd(_mem, _data) InterlockedAnd(_mem, _data)
#define atomicMax(_mem, _data) InterlockedMax(_mem, _data)
#define atomicMin(_mem, _data) InterlockedMin(_mem, _data)
#define atomicOr(_mem, _data) InterlockedOr(_mem, _data)
#define atomicXor(_mem, _data) InterlockedXor(_mem, _data)
#define atomicFetchAndAdd(_mem, _data, _original) InterlockedAdd(_mem, _data, _original)
#define atomicFetchAndAnd(_mem, _data, _original) InterlockedAnd(_mem, _data, _original)
#define atomicFetchAndMax(_mem, _data, _original) InterlockedMax(_mem, _data, _original)
#define atomicFetchAndMin(_mem, _data, _original) InterlockedMin(_mem, _data, _original)
#define atomicFetchAndOr(_mem, _data, _original) InterlockedOr(_mem, _data, _original)
#define atomicFetchAndXor(_mem, _data, _original) InterlockedXor(_mem, _data, _original)
#define atomicFetchAndExchange(_mem, _data, _original) InterlockedExchange(_mem, _data, _original)
#define atomicFetchCompareExchange(_mem, _compare, _data, _original) InterlockedCompareExchange(_mem,_compare, _data, _original)
// InterlockedCompareStore
#define barrier() GroupMemoryBarrierWithGroupSync()
#define memoryBarrier() GroupMemoryBarrierWithGroupSync()
#define memoryBarrierAtomicCounter() GroupMemoryBarrierWithGroupSync()
#define memoryBarrierBuffer() AllMemoryBarrierWithGroupSync()
#define memoryBarrierImage() GroupMemoryBarrierWithGroupSync()
#define memoryBarrierShared() GroupMemoryBarrierWithGroupSync()
#define groupMemoryBarrier() GroupMemoryBarrierWithGroupSync()
#endif // BGFX_SHADER_LANGUAGE_GLSL
#define dispatchIndirect( \
_buffer \
, _offset \
, _numX \
, _numY \
, _numZ \
) \
_buffer[(_offset)*2+0] = uvec4(_numX, _numY, _numZ, 0u)
#define drawIndirect( \
_buffer \
, _offset \
, _numVertices \
, _numInstances \
, _startVertex \
, _startInstance \
) \
_buffer[(_offset)*2+0] = uvec4(_numVertices, _numInstances, _startVertex, _startInstance)
#define drawIndexedIndirect( \
_buffer \
, _offset \
, _numIndices \
, _numInstances \
, _startIndex \
, _startVertex \
, _startInstance \
) \
_buffer[(_offset)*2+0] = uvec4(_numIndices, _numInstances, _startIndex, _startVertex); \
_buffer[(_offset)*2+1] = uvec4(_startInstance, 0u, 0u, 0u)
#endif // __cplusplus
#endif // BGFX_COMPUTE_H_HEADER_GUARD