63 lines
1.8 KiB
HLSL
63 lines
1.8 KiB
HLSL
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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#if SRC_TEXTURE2D_X_ARRAY
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TEXTURE2D_ARRAY(_SourceTex);
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#else
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TEXTURE2D(_SourceTex);
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#endif
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SamplerState sampler_LinearClamp;
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uniform uint _SourceTexArraySlice;
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uniform uint _SRGBRead;
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uniform uint _SRGBWrite;
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struct Attributes
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{
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uint vertexID : SV_VertexID;
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};
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struct Varyings
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{
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float4 positionCS : SV_POSITION;
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float2 texcoord : TEXCOORD0;
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};
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Varyings VertQuad(Attributes input)
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{
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Varyings output;
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output.positionCS = GetQuadVertexPosition(input.vertexID) * float4(_ScaleBiasRt.x, _ScaleBiasRt.y, 1, 1) + float4(_ScaleBiasRt.z, _ScaleBiasRt.w, 0, 0);
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output.positionCS.xy = output.positionCS.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0f); //convert to -1..1
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//Using temporary as writing to global _ScaleBias.w is prohibited when compiling with DXC
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float scaleBiasW = _ScaleBias.w;
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#if UNITY_UV_STARTS_AT_TOP
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// Unity viewport convention is bottom left as origin. Adjust Scalebias to read the correct region.
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scaleBiasW = 1 - _ScaleBias.w - _ScaleBias.y;
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#endif
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output.texcoord = GetQuadTexCoord(input.vertexID) * _ScaleBias.xy + float2(_ScaleBias.z, scaleBiasW);
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return output;
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}
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float4 FragBilinear(Varyings input) : SV_Target
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{
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float4 outColor;
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#if SRC_TEXTURE2D_X_ARRAY
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outColor = SAMPLE_TEXTURE2D_ARRAY(_SourceTex, sampler_LinearClamp, input.texcoord.xy, _SourceTexArraySlice);
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#else
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outColor = SAMPLE_TEXTURE2D(_SourceTex, sampler_LinearClamp, input.texcoord.xy);
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#endif
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if (_SRGBRead && _SRGBWrite)
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return outColor;
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if (_SRGBRead)
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outColor = SRGBToLinear(outColor);
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if (_SRGBWrite)
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outColor = LinearToSRGB(outColor);
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return outColor;
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}
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