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156 行
10 KiB
156 行
10 KiB
#ifndef SHADER_API_GLES
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#error GLES.hlsl should not be included if SHADER_API_GLES is not defined
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#endif
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#define UNITY_UV_STARTS_AT_TOP 0
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#define UNITY_REVERSED_Z 0
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#define UNITY_GATHER_SUPPORTED 0
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#define UNITY_NEAR_CLIP_VALUE (-1.0)
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// This value will not go through any matrix projection convertion
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#define UNITY_RAW_FAR_CLIP_VALUE (1.0)
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#define VERTEXID_SEMANTIC gl_VertexID
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#define FRONT_FACE_SEMANTIC VFACE
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#define FRONT_FACE_TYPE float
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#define IS_FRONT_VFACE(VAL, FRONT, BACK) ((VAL > 0.0) ? (FRONT) : (BACK))
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#define CBUFFER_START(name)
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#define CBUFFER_END
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// flow control attributes
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#define UNITY_BRANCH
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#define UNITY_FLATTEN
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#define UNITY_UNROLL
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#define UNITY_UNROLLX(_x)
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#define UNITY_LOOP
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#define uint int
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#define rcp(x) 1.0 / x
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#define ddx_fine ddx
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#define ddy_fine ddy
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#define asfloat
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#define asuint(x) asint(x)
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#define f32tof16
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#define f16tof32
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#define ERROR_ON_UNSUPPORTED_FUNCTION(funcName) #error ##funcName is not supported on GLES 2.0
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// Initialize arbitrary structure with zero values.
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// Do not exist on some platform, in this case we need to have a standard name that call a function that will initialize all parameters to 0
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#define ZERO_INITIALIZE(type, name) name = (type)0;
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#define ZERO_INITIALIZE_ARRAY(type, name, arraySize) { for (int arrayIndex = 0; arrayIndex < arraySize; arrayIndex++) { name[arrayIndex] = (type)0; } }
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// GLES2 might not have shadow hardware comparison support
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#if defined(UNITY_ENABLE_NATIVE_SHADOWS_LOOKUPS)
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#define SHADOW2D_TEXTURE_AND_SAMPLER sampler2DShadow
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#define SHADOWCUBE_TEXTURE_AND_SAMPLER samplerCUBEShadow
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#define SHADOW2D_SAMPLE(textureName, samplerName, coord3) shadow2D(textureName, coord3)
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#define SHADOWCUBE_SAMPLE(textureName, samplerName, coord4) ((texCUBE(textureName,(coord4).xyz) < (coord4).w) ? 0.0 : 1.0)
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#else
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// emulate hardware comparison
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#define SHADOW2D_TEXTURE_AND_SAMPLER sampler2D_float
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#define SHADOWCUBE_TEXTURE_AND_SAMPLER samplerCUBE_float
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#define SHADOW2D_SAMPLE(textureName, samplerName, coord3) ((SAMPLE_DEPTH_TEXTURE(textureName, samplerName, (coord3).xy) < (coord3).z) ? 0.0 : 1.0)
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#define SHADOWCUBE_SAMPLE(textureName, samplerName, coord4) ((texCUBE(textureName,(coord4).xyz).r < (coord4).w) ? 0.0 : 1.0)
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#endif
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// Texture util abstraction
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#define CALCULATE_TEXTURE2D_LOD(textureName, samplerName, coord2) #error calculate Level of Detail not supported in GLES2
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// Texture abstraction
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#define TEXTURE2D(textureName) sampler2D textureName
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#define TEXTURE2D_ARRAY(textureName) samplerCUBE textureName // No support to texture2DArray
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#define TEXTURECUBE(textureName) samplerCUBE textureName
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#define TEXTURECUBE_ARRAY(textureName) samplerCUBE textureName // No supoport to textureCubeArray and can't emulate with texture2DArray
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#define TEXTURE3D(textureName) sampler3D textureName
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#define TEXTURE2D_FLOAT(textureName) sampler2D_float textureName
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#define TEXTURE2D_ARRAY_FLOAT(textureName) TEXTURECUBE_FLOAT(textureName) // No support to texture2DArray
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#define TEXTURECUBE_FLOAT(textureName) samplerCUBE_float textureName
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#define TEXTURECUBE_ARRAY_FLOAT(textureName) TEXTURECUBE_FLOAT(textureName) // No support to textureCubeArray
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#define TEXTURE3D_FLOAT(textureName) sampler3D_float textureName
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#define TEXTURE2D_HALF(textureName) sampler2D_half textureName
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#define TEXTURE2D_ARRAY_HALF(textureName) TEXTURECUBE_HALF(textureName) // No support to texture2DArray
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#define TEXTURECUBE_HALF(textureName) samplerCUBE_half textureName
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#define TEXTURECUBE_ARRAY_HALF(textureName) TEXTURECUBE_HALF(textureName) // No support to textureCubeArray
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#define TEXTURE3D_HALF(textureName) sampler3D_half textureName
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#define TEXTURE2D_SHADOW(textureName) SHADOW2D_TEXTURE_AND_SAMPLER textureName
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#define TEXTURE2D_ARRAY_SHADOW(textureName) TEXTURECUBE_SHADOW(textureName) // No support to texture array
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#define TEXTURECUBE_SHADOW(textureName) SHADOWCUBE_TEXTURE_AND_SAMPLER textureName
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#define TEXTURECUBE_ARRAY_SHADOW(textureName) TEXTURECUBE_SHADOW(textureName) // No support to texture array
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#define RW_TEXTURE2D(type, textureNam) ERROR_ON_UNSUPPORTED_FUNCTION(RWTexture2D)
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#define RW_TEXTURE2D_ARRAY(type, textureName) ERROR_ON_UNSUPPORTED_FUNCTION(RWTexture2DArray)
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#define RW_TEXTURE3D(type, textureNam) ERROR_ON_UNSUPPORTED_FUNCTION(RWTexture3D)
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#define SAMPLER(samplerName)
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#define SAMPLER_CMP(samplerName)
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#define TEXTURE2D_ARGS(textureName, samplerName) sampler2D textureName
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#define TEXTURE2D_ARRAY_ARGS(textureName, samplerName) samplerCUBE textureName
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#define TEXTURECUBE_ARGS(textureName, samplerName) samplerCUBE textureName
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#define TEXTURECUBE_ARRAY_ARGS(textureName, samplerName) samplerCUBE textureName
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#define TEXTURE3D_ARGS(textureName, samplerName) sampler3D textureName
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#define TEXTURE2D_SHADOW_ARGS(textureName, samplerName) SHADOW2D_TEXTURE_AND_SAMPLER textureName
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#define TEXTURE2D_ARRAY_SHADOW_ARGS(textureName, samplerName) SHADOWCUBE_TEXTURE_AND_SAMPLER textureName
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#define TEXTURECUBE_SHADOW_ARGS(textureName, samplerName) SHADOWCUBE_TEXTURE_AND_SAMPLER textureName
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#define TEXTURE2D_PARAM(textureName, samplerName) textureName
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#define TEXTURE2D_ARRAY_PARAM(textureName, samplerName) textureName
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#define TEXTURECUBE_PARAM(textureName, samplerName) textureName
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#define TEXTURECUBE_ARRAY_PARAM(textureName, samplerName) textureName
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#define TEXTURE3D_PARAM(textureName, samplerName) textureName
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#define TEXTURE2D_SHADOW_PARAM(textureName, samplerName) textureName
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#define TEXTURE2D_ARRAY_SHADOW_PARAM(textureName, samplerName) textureName
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#define TEXTURECUBE_SHADOW_PARAM(textureName, samplerName) textureName
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#define SAMPLE_TEXTURE2D(textureName, samplerName, coord2) tex2D(textureName, coord2)
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#if (SHADER_TARGET >= 30)
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#define SAMPLE_TEXTURE2D_LOD(textureName, samplerName, coord2, lod) tex2Dlod(textureName, float4(coord2, 0, lod))
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#else
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// No lod support. Very poor approximation with bias.
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#define SAMPLE_TEXTURE2D_LOD(textureName, samplerName, coord2, lod) SAMPLE_TEXTURE2D_BIAS(textureName, samplerName, coord2, lod)
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#endif
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#define SAMPLE_TEXTURE2D_BIAS(textureName, samplerName, coord2, bias) tex2Dbias(textureName, float4(coord2, 0, bias))
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#define SAMPLE_TEXTURE2D_GRAD(textureName, samplerName, coord2, ddx, ddy) SAMPLE_TEXTURE2D(textureName, coord2)
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#define SAMPLE_TEXTURE2D_ARRAY(textureName, samplerName, coord2, index) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURE2D_ARRAY)
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#define SAMPLE_TEXTURE2D_ARRAY_LOD(textureName, samplerName, coord2, index, lod) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURE2D_ARRAY_LOD)
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#define SAMPLE_TEXTURE2D_ARRAY_BIAS(textureName, samplerName, coord2, index, bias) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURE2D_ARRAY_BIAS)
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#define SAMPLE_TEXTURE2D_ARRAY_GRAD(textureName, samplerName, coord2, index, dpdx, dpdy) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURE2D_ARRAY_GRAD)
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#define SAMPLE_TEXTURECUBE(textureName, samplerName, coord3) texCUBE(textureName, coord3)
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// No lod support. Very poor approximation with bias.
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#define SAMPLE_TEXTURECUBE_LOD(textureName, samplerName, coord3, lod) SAMPLE_TEXTURECUBE_BIAS(textureName, samplerName, coord3, lod)
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#define SAMPLE_TEXTURECUBE_BIAS(textureName, samplerName, coord3, bias) texCUBEbias(textureName, float4(coord3, bias))
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#define SAMPLE_TEXTURECUBE_ARRAY(textureName, samplerName, coord3, index) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURECUBE_ARRAY)
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#define SAMPLE_TEXTURECUBE_ARRAY_LOD(textureName, samplerName, coord3, index, lod) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURECUBE_ARRAY_LOD)
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#define SAMPLE_TEXTURECUBE_ARRAY_BIAS(textureName, samplerName, coord3, index, bias) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURECUBE_ARRAY_BIAS)
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#define SAMPLE_TEXTURE3D(textureName, samplerName, coord3) tex3D(textureName, coord3)
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#define SAMPLE_TEXTURE2D_SHADOW(textureName, samplerName, coord3) SHADOW2D_SAMPLE(textureName, samplerName, coord3)
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#define SAMPLE_TEXTURE2D_ARRAY_SHADOW(textureName, samplerName, coord3, index) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURE2D_ARRAY_SHADOW)
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#define SAMPLE_TEXTURECUBE_SHADOW(textureName, samplerName, coord4) SHADOWCUBE_SAMPLE(textureName, samplerName, coord4)
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#define SAMPLE_TEXTURECUBE_ARRAY_SHADOW(textureName, samplerName, coord4, index) ERROR_ON_UNSUPPORTED_FUNCTION(SAMPLE_TEXTURECUBE_ARRAY_SHADOW)
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#define SAMPLE_DEPTH_TEXTURE(textureName, samplerName, coord2) SAMPLE_TEXTURE2D(textureName, samplerName, coord2).r
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#define SAMPLE_DEPTH_TEXTURE_LOD(textureName, samplerName, coord2, lod) SAMPLE_TEXTURE2D_LOD(textureName, samplerName, coord2, lod).r
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// Not supported. Can't define as error because shader library is calling these functions.
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#define LOAD_TEXTURE2D(textureName, unCoord2) half4(0, 0, 0, 0)
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#define LOAD_TEXTURE2D_LOD(textureName, unCoord2, lod) half4(0, 0, 0, 0)
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#define LOAD_TEXTURE2D_MSAA(textureName, unCoord2, sampleIndex) half4(0, 0, 0, 0)
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#define LOAD_TEXTURE2D_ARRAY(textureName, unCoord2, index) half4(0, 0, 0, 0)
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#define LOAD_TEXTURE2D_ARRAY_MSAA(textureName, unCoord2, index, sampleIndex) half4(0, 0, 0, 0)
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#define LOAD_TEXTURE2D_ARRAY_LOD(textureName, unCoord2, index, lod) half4(0, 0, 0, 0)
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// Gather not supported. Fallback to regular texture sampling.
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#define GATHER_TEXTURE2D(textureName, samplerName, coord2) ERROR_ON_UNSUPPORTED_FUNCTION(GATHER_TEXTURE2D)
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#define GATHER_TEXTURE2D_ARRAY(textureName, samplerName, coord2, index) ERROR_ON_UNSUPPORTED_FUNCTION(GATHER_TEXTURE2D_ARRAY)
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#define GATHER_TEXTURECUBE(textureName, samplerName, coord3) ERROR_ON_UNSUPPORTED_FUNCTION(GATHER_TEXTURECUBE)
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#define GATHER_TEXTURECUBE_ARRAY(textureName, samplerName, coord3, index) ERROR_ON_UNSUPPORTED_FUNCTION(GATHER_TEXTURECUBE_ARRAY)
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