mirror of
https://github.com/scratchfoundation/bgfx.git
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107 lines
3.1 KiB
Bash
107 lines
3.1 KiB
Bash
/*
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* Copyright 2011-2012 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__
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#define __BGFX_SHADER_H__
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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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# 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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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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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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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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# 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(_name, _coord) bgfxTexture2D(_name, _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 sampler3D BgfxSampler3D
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# define texture3D(_name, _coord) bgfxTexture3D(_name, _coord)
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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(_name, _coord) bgfxTextureCube(_name, _coord)
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# else
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# define SAMPLER2D(_name, _reg) uniform sampler2D _name : register(s ## _reg)
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# define texture2D tex2D
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# define SAMPLER3D(_name, _reg) uniform sampler3D _name : register(s ## _reg)
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# define texture3D tex3D
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# define SAMPLERCUBE(_name, _reg) uniform samplerCUBE _name : register(s[_reg])
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# define textureCube texCUBE
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# endif //
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# define vec2_splat(_x) float2(_x, _x)
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# define vec3_splat(_x) float3(_x, _x, _x)
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# define vec4_splat(_x) float4(_x, _x, _x, _x)
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vec4 instMul(mat4 _mtx, vec4 _vec)
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{
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return mul(_vec, _mtx);
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}
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#elif BGFX_SHADER_LANGUAGE_GLSL
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# define atan2(_x, _y) atan(_x, _y)
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# define frac(_x) fract(_x)
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# define lerp(_x, _y, _t) mix(_x, _y, _t)
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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 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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vec4 instMul(mat4 _mtx, vec4 _vec)
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{
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return mul(_mtx, _vec);
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}
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#endif // BGFX_SHADER_LANGUAGE_HLSL
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#endif // __cplusplus
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#endif // __BGFX_SHADER_H__
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