323 lines
11 KiB
Bash
323 lines
11 KiB
Bash
/*
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* Copyright 2011-2015 Branimir Karadzic. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#ifndef BGFX_SHADER_H_HEADER_GUARD
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#define BGFX_SHADER_H_HEADER_GUARD
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#if !defined(BGFX_CONFIG_MAX_BONES)
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# define BGFX_CONFIG_MAX_BONES 32
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#endif // !defined(BGFX_CONFIG_MAX_BONES)
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#ifndef __cplusplus
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#if BGFX_SHADER_LANGUAGE_HLSL
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# define dFdx(_x) ddx(_x)
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# define dFdy(_y) ddy(-_y)
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# define inversesqrt(_x) rsqrt(_x)
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# define fract(_x) frac(_x)
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# define bvec2 bool2
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# define bvec3 bool3
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# define bvec4 bool4
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# if BGFX_SHADER_LANGUAGE_HLSL > 3
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struct BgfxSampler2D
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{
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SamplerState m_sampler;
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Texture2D m_texture;
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};
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vec4 bgfxTexture2D(BgfxSampler2D _sampler, vec2 _coord)
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{
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return _sampler.m_texture.Sample(_sampler.m_sampler, _coord);
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}
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vec4 bgfxTexture2DLod(BgfxSampler2D _sampler, vec2 _coord, float _level)
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{
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return _sampler.m_texture.SampleLevel(_sampler.m_sampler, _coord, _level);
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}
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vec4 bgfxTexture2DProj(BgfxSampler2D _sampler, vec3 _coord)
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{
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vec2 coord = _coord.xy * rcp(_coord.z);
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return _sampler.m_texture.Sample(_sampler.m_sampler, coord);
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}
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vec4 bgfxTexture2DProj(BgfxSampler2D _sampler, vec4 _coord)
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{
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vec2 coord = _coord.xy * rcp(_coord.w);
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return _sampler.m_texture.Sample(_sampler.m_sampler, coord);
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}
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struct BgfxSampler2DShadow
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{
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SamplerComparisonState m_sampler;
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Texture2D m_texture;
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};
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float bgfxShadow2D(BgfxSampler2DShadow _sampler, vec3 _coord)
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{
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return _sampler.m_texture.SampleCmpLevelZero(_sampler.m_sampler, _coord.xy, _coord.z * 2.0 - 1.0);
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}
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float bgfxShadow2DProj(BgfxSampler2DShadow _sampler, vec4 _coord)
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{
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vec3 coord = _coord.xyz * rcp(_coord.w);
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return _sampler.m_texture.SampleCmpLevelZero(_sampler.m_sampler, coord.xy, coord.z * 2.0 - 1.0);
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}
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struct BgfxSampler3D
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{
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SamplerState m_sampler;
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Texture3D m_texture;
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};
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struct BgfxISampler3D
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{
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Texture3D<ivec4> m_texture;
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};
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struct BgfxUSampler3D
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{
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Texture3D<uvec4> m_texture;
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};
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vec4 bgfxTexture3D(BgfxSampler3D _sampler, vec3 _coord)
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{
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return _sampler.m_texture.Sample(_sampler.m_sampler, _coord);
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}
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vec4 bgfxTexture3DLod(BgfxSampler3D _sampler, vec3 _coord, float _level)
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{
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return _sampler.m_texture.SampleLevel(_sampler.m_sampler, _coord, _level);
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}
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ivec4 bgfxTexture3D(BgfxISampler3D _sampler, vec3 _coord)
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{
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ivec3 size;
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_sampler.m_texture.GetDimensions(size.x, size.y, size.z);
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return _sampler.m_texture.Load(ivec4(_coord * size, 0) );
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}
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uvec4 bgfxTexture3D(BgfxUSampler3D _sampler, vec3 _coord)
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{
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uvec3 size;
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_sampler.m_texture.GetDimensions(size.x, size.y, size.z);
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return _sampler.m_texture.Load(uvec4(_coord * size, 0) );
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}
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struct BgfxSamplerCube
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{
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SamplerState m_sampler;
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TextureCube m_texture;
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};
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vec4 bgfxTextureCube(BgfxSamplerCube _sampler, vec3 _coord)
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{
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return _sampler.m_texture.Sample(_sampler.m_sampler, _coord);
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}
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vec4 bgfxTextureCubeLod(BgfxSamplerCube _sampler, vec3 _coord, float _level)
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{
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return _sampler.m_texture.SampleLevel(_sampler.m_sampler, _coord, _level);
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}
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# define SAMPLER2D(_name, _reg) \
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uniform SamplerState _name ## Sampler : register(s[_reg]); \
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uniform Texture2D _name ## Texture : register(t[_reg]); \
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static BgfxSampler2D _name = { _name ## Sampler, _name ## Texture }
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# define sampler2D BgfxSampler2D
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# define texture2D(_sampler, _coord) bgfxTexture2D(_sampler, _coord)
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# define texture2DLod(_sampler, _coord, _level) bgfxTexture2DLod(_sampler, _coord, _level)
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# define texture2DProj(_sampler, _coord) bgfxTexture2DProj(_sampler, _coord)
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# define SAMPLER2DSHADOW(_name, _reg) \
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uniform SamplerComparisonState _name ## Sampler : register(s[_reg]); \
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uniform Texture2D _name ## Texture : register(t[_reg]); \
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static BgfxSampler2DShadow _name = { _name ## Sampler, _name ## Texture }
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# define sampler2DShadow BgfxSampler2DShadow
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# define shadow2D(_sampler, _coord) bgfxShadow2D(_sampler, _coord)
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# define shadow2DProj(_sampler, _coord) bgfxShadow2DProj(_sampler, _coord)
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# define SAMPLER3D(_name, _reg) \
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uniform SamplerState _name ## Sampler : register(s[_reg]); \
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uniform Texture3D _name ## Texture : register(t[_reg]); \
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static BgfxSampler3D _name = { _name ## Sampler, _name ## Texture }
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# define ISAMPLER3D(_name, _reg) \
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uniform Texture3D<ivec4> _name ## Texture : register(t[_reg]); \
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static BgfxISampler3D _name = { _name ## Texture }
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# define USAMPLER3D(_name, _reg) \
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uniform Texture3D<uvec4> _name ## Texture : register(t[_reg]); \
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static BgfxUSampler3D _name = { _name ## Texture }
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# define sampler3D BgfxSampler3D
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# define texture3D(_sampler, _coord) bgfxTexture3D(_sampler, _coord)
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# define texture3DLod(_sampler, _coord, _level) bgfxTexture3DLod(_sampler, _coord, _level)
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# define SAMPLERCUBE(_name, _reg) \
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uniform SamplerState _name ## Sampler : register(s[_reg]); \
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uniform TextureCube _name ## Texture : register(t[_reg]); \
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static BgfxSamplerCube _name = { _name ## Sampler, _name ## Texture }
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# define samplerCube BgfxSamplerCube
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# define textureCube(_sampler, _coord) bgfxTextureCube(_sampler, _coord)
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# define textureCubeLod(_sampler, _coord, _level) bgfxTextureCubeLod(_sampler, _coord, _level)
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# else
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# define sampler2DShadow sampler2D
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vec4 bgfxTexture2DProj(sampler2D _sampler, vec3 _coord)
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{
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return tex2Dproj(_sampler, vec4(_coord.xy, 0.0, _coord.z) );
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}
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vec4 bgfxTexture2DProj(sampler2D _sampler, vec4 _coord)
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{
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return tex2Dproj(_sampler, _coord);
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}
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float bgfxShadow2D(sampler2DShadow _sampler, vec3 _coord)
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{
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#if 0
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float occluder = tex2D(_sampler, _coord.xy).x;
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return step(_coord.z * 2.0 - 1.0, occluder);
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#else
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return tex2Dproj(_sampler, vec4(_coord.xy, _coord.z * 2.0 - 1.0, 1.0) ).x;
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#endif // 0
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}
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float bgfxShadow2DProj(sampler2DShadow _sampler, vec4 _coord)
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{
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#if 0
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vec3 coord = _coord.xyz * rcp(_coord.w);
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float occluder = tex2D(_sampler, coord.xy).x;
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return step(coord.z * 2.0 - 1.0, occluder);
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#else
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return tex2Dproj(_sampler, _coord).x;
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#endif // 0
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}
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# define SAMPLER2D(_name, _reg) uniform sampler2D _name : register(s ## _reg)
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# define texture2D(_sampler, _coord) tex2D(_sampler, _coord)
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# define texture2DProj(_sampler, _coord) bgfxTexture2DProj(_sampler, _coord)
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# define SAMPLER2DSHADOW(_name, _reg) uniform sampler2DShadow _name : register(s ## _reg)
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# define shadow2D(_sampler, _coord) bgfxShadow2D(_sampler, _coord)
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# define shadow2DProj(_sampler, _coord) bgfxShadow2DProj(_sampler, _coord)
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# define SAMPLER3D(_name, _reg) uniform sampler3D _name : register(s ## _reg)
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# define texture3D(_sampler, _coord) tex3D(_sampler, _coord)
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# define SAMPLERCUBE(_name, _reg) uniform samplerCUBE _name : register(s[_reg])
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# define textureCube(_sampler, _coord) texCUBE(_sampler, _coord)
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# if BGFX_SHADER_LANGUAGE_HLSL == 2
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# define texture2DLod(_sampler, _coord, _level) tex2D(_sampler, (_coord).xy)
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# define texture3DLod(_sampler, _coord, _level) tex3D(_sampler, (_coord).xyz)
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# define textureCubeLod(_sampler, _coord, _level) texCUBE(_sampler, (_coord).xyz)
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# else
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# define texture2DLod(_sampler, _coord, _level) tex2Dlod(_sampler, vec4( (_coord).xy, 0.0, _level) )
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# define texture3DLod(_sampler, _coord, _level) tex3Dlod(_sampler, vec4( (_coord).xyz, _level) )
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# define textureCubeLod(_sampler, _coord, _level) texCUBElod(_sampler, vec4( (_coord).xyz, _level) )
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# endif // BGFX_SHADER_LANGUAGE_HLSL == 2
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# endif // BGFX_SHADER_LANGUAGE_HLSL > 3
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vec2 vec2_splat(float _x) { return vec2(_x, _x); }
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vec3 vec3_splat(float _x) { return vec3(_x, _x, _x); }
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vec4 vec4_splat(float _x) { return vec4(_x, _x, _x, _x); }
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uvec2 uvec2_splat(uint _x) { return uvec2(_x, _x); }
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uvec3 uvec3_splat(uint _x) { return uvec3(_x, _x, _x); }
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uvec4 uvec4_splat(uint _x) { return uvec4(_x, _x, _x, _x); }
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vec3 instMul(vec3 _vec, mat3 _mtx) { return mul(_mtx, _vec); }
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vec3 instMul(mat3 _mtx, vec3 _vec) { return mul(_vec, _mtx); }
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vec4 instMul(vec4 _vec, mat4 _mtx) { return mul(_mtx, _vec); }
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vec4 instMul(mat4 _mtx, vec4 _vec) { return mul(_vec, _mtx); }
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bvec2 lessThan(vec2 _a, vec2 _b) { return _a < _b; }
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bvec3 lessThan(vec3 _a, vec3 _b) { return _a < _b; }
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bvec4 lessThan(vec4 _a, vec4 _b) { return _a < _b; }
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bvec2 lessThanEqual(vec2 _a, vec2 _b) { return _a <= _b; }
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bvec3 lessThanEqual(vec3 _a, vec3 _b) { return _a <= _b; }
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bvec4 lessThanEqual(vec4 _a, vec4 _b) { return _a <= _b; }
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bvec2 greaterThan(vec2 _a, vec2 _b) { return _a > _b; }
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bvec3 greaterThan(vec3 _a, vec3 _b) { return _a > _b; }
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bvec4 greaterThan(vec4 _a, vec4 _b) { return _a > _b; }
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bvec2 greaterThanEqual(vec2 _a, vec2 _b) { return _a >= _b; }
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bvec3 greaterThanEqual(vec3 _a, vec3 _b) { return _a >= _b; }
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bvec4 greaterThanEqual(vec4 _a, vec4 _b) { return _a >= _b; }
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bvec2 notEqual(vec2 _a, vec2 _b) { return _a != _b; }
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bvec3 notEqual(vec3 _a, vec3 _b) { return _a != _b; }
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bvec4 notEqual(vec4 _a, vec4 _b) { return _a != _b; }
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bvec2 equal(vec2 _a, vec2 _b) { return _a == _b; }
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bvec3 equal(vec3 _a, vec3 _b) { return _a == _b; }
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bvec4 equal(vec4 _a, vec4 _b) { return _a == _b; }
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float mix(float _a, float _b, float _t) { return lerp(_a, _b, _t); }
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vec2 mix(vec2 _a, vec2 _b, vec2 _t) { return lerp(_a, _b, _t); }
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vec3 mix(vec3 _a, vec3 _b, vec3 _t) { return lerp(_a, _b, _t); }
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vec4 mix(vec4 _a, vec4 _b, vec4 _t) { return lerp(_a, _b, _t); }
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float mod(float _a, float _b) { return _a - _b * floor(_a / _b); }
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vec2 mod(vec2 _a, vec2 _b) { return _a - _b * floor(_a / _b); }
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vec3 mod(vec3 _a, vec3 _b) { return _a - _b * floor(_a / _b); }
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vec4 mod(vec4 _a, vec4 _b) { return _a - _b * floor(_a / _b); }
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#else
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# define atan2(_x, _y) atan(_x, _y)
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# define mul(_a, _b) ( (_a) * (_b) )
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# define saturate(_x) clamp(_x, 0.0, 1.0)
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# define SAMPLER2D(_name, _reg) uniform sampler2D _name
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# define SAMPLER3D(_name, _reg) uniform sampler3D _name
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# define SAMPLERCUBE(_name, _reg) uniform samplerCube _name
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# define SAMPLER2DSHADOW(_name, _reg) uniform sampler2DShadow _name
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# define vec2_splat(_x) vec2(_x)
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# define vec3_splat(_x) vec3(_x)
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# define vec4_splat(_x) vec4(_x)
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# define uvec2_splat(_x) uvec2(_x)
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# define uvec3_splat(_x) uvec3(_x)
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# define uvec4_splat(_x) uvec4(_x)
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# if BGFX_SHADER_LANGUAGE_GLSL >= 130
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# define ISAMPLER3D(_name, _reg) uniform isampler3D _name
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# define USAMPLER3D(_name, _reg) uniform usampler3D _name
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ivec4 texture3D(isampler3D _sampler, vec3 _coord) { return texture(_sampler, _coord); }
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uvec4 texture3D(usampler3D _sampler, vec3 _coord) { return texture(_sampler, _coord); }
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# endif // BGFX_SHADER_LANGUAGE_GLSL >= 130
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vec3 instMul(vec3 _vec, mat3 _mtx) { return mul(_vec, _mtx); }
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vec3 instMul(mat3 _mtx, vec3 _vec) { return mul(_mtx, _vec); }
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vec4 instMul(vec4 _vec, mat4 _mtx) { return mul(_vec, _mtx); }
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vec4 instMul(mat4 _mtx, vec4 _vec) { return mul(_mtx, _vec); }
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float rcp(float _a) { return 1.0/_a; }
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vec2 rcp(vec2 _a) { return vec2(1.0)/_a; }
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vec3 rcp(vec3 _a) { return vec3(1.0)/_a; }
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vec4 rcp(vec4 _a) { return vec4(1.0)/_a; }
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#endif // BGFX_SHADER_LANGUAGE_*
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uniform vec4 u_viewRect;
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uniform vec4 u_viewTexel;
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uniform mat4 u_view;
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uniform mat4 u_invView;
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uniform mat4 u_proj;
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uniform mat4 u_invProj;
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uniform mat4 u_viewProj;
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uniform mat4 u_invViewProj;
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uniform mat4 u_model[BGFX_CONFIG_MAX_BONES];
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uniform mat4 u_modelView;
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uniform mat4 u_modelViewProj;
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uniform vec4 u_alphaRef4;
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#define u_alphaRef u_alphaRef4.x
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#endif // __cplusplus
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#endif // BGFX_SHADER_H_HEADER_GUARD
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