237 lines
7.3 KiB
HLSL
237 lines
7.3 KiB
HLSL
#ifndef UNITY_CORE_BLIT_INCLUDED
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#define UNITY_CORE_BLIT_INCLUDED
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Common.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/Color.hlsl"
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#include "Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl"
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TEXTURE2D_X(_BlitTexture);
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TEXTURECUBE(_BlitCubeTexture);
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SamplerState sampler_PointClamp;
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SamplerState sampler_LinearClamp;
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SamplerState sampler_PointRepeat;
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SamplerState sampler_LinearRepeat;
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uniform float4 _BlitScaleBias;
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uniform float4 _BlitScaleBiasRt;
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uniform float _BlitMipLevel;
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uniform float2 _BlitTextureSize;
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uniform uint _BlitPaddingSize;
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uniform int _BlitTexArraySlice;
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#if SHADER_API_GLES
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struct Attributes
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{
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float4 positionOS : POSITION;
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float2 uv : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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#else
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struct Attributes
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{
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uint vertexID : SV_VertexID;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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#endif
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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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UNITY_VERTEX_OUTPUT_STEREO
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};
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Varyings Vert(Attributes input)
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{
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Varyings output;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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#if SHADER_API_GLES
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float4 pos = input.positionOS;
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float2 uv = input.uv;
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#else
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float4 pos = GetFullScreenTriangleVertexPosition(input.vertexID);
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float2 uv = GetFullScreenTriangleTexCoord(input.vertexID);
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#endif
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output.positionCS = pos;
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output.texcoord = uv * _BlitScaleBias.xy + _BlitScaleBias.zw;
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return output;
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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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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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#if SHADER_API_GLES
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float4 pos = input.positionOS;
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float2 uv = input.uv;
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#else
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float4 pos = GetQuadVertexPosition(input.vertexID);
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float2 uv = GetQuadTexCoord(input.vertexID);
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#endif
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output.positionCS = pos * float4(_BlitScaleBiasRt.x, _BlitScaleBiasRt.y, 1, 1) + float4(_BlitScaleBiasRt.z, _BlitScaleBiasRt.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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output.texcoord = uv * _BlitScaleBias.xy + _BlitScaleBias.zw;
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return output;
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}
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Varyings VertQuadPadding(Attributes input)
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{
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Varyings output;
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UNITY_SETUP_INSTANCE_ID(input);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
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float2 scalePadding = ((_BlitTextureSize + float(_BlitPaddingSize)) / _BlitTextureSize);
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float2 offsetPaddding = (float(_BlitPaddingSize) / 2.0) / (_BlitTextureSize + _BlitPaddingSize);
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#if SHADER_API_GLES
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float4 pos = input.positionOS;
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float2 uv = input.uv;
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#else
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float4 pos = GetQuadVertexPosition(input.vertexID);
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float2 uv = GetQuadTexCoord(input.vertexID);
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#endif
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output.positionCS = pos * float4(_BlitScaleBiasRt.x, _BlitScaleBiasRt.y, 1, 1) + float4(_BlitScaleBiasRt.z, _BlitScaleBiasRt.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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output.texcoord = uv;
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output.texcoord = (output.texcoord - offsetPaddding) * scalePadding;
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output.texcoord = output.texcoord * _BlitScaleBias.xy + _BlitScaleBias.zw;
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return output;
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}
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float4 Frag(Varyings input, SamplerState s)
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{
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#if defined(USE_TEXTURE2D_X_AS_ARRAY) && defined(BLIT_SINGLE_SLICE)
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return SAMPLE_TEXTURE2D_ARRAY_LOD(_BlitTexture, s, input.texcoord.xy, _BlitTexArraySlice, _BlitMipLevel);
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#endif
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, s, input.texcoord.xy, _BlitMipLevel);
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}
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float4 FragNearest(Varyings input) : SV_Target
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{
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return Frag(input, sampler_PointClamp);
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}
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float4 FragBilinear(Varyings input) : SV_Target
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{
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return Frag(input, sampler_LinearClamp);
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}
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float4 FragBilinearRepeat(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 uv = input.texcoord.xy;
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_LinearRepeat, uv, _BlitMipLevel);
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}
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float4 FragNearestRepeat(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 uv = input.texcoord.xy;
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_PointRepeat, uv, _BlitMipLevel);
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}
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float4 FragOctahedralBilinearRepeat(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float u = input.texcoord.x;
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float v = input.texcoord.y;
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float2 uv;
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if (u < 0.0f)
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{
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if (v < 0.0f)
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uv = float2(1.0f + u, 1.0f + v);
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else if (v < 1.0f)
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uv = float2(-u, 1.0f - v);
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else
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uv = float2(1.0f + u, v - 1.0f);
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}
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else if (u < 1.0f)
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{
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if (v < 0.0f)
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uv = float2(1.0f - u, -v);
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else if (v < 1.0f)
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uv = float2(u, v);
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else
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uv = float2(1.0f - u, 2.0f - v);
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}
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else
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{
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if (v < 0.0f)
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uv = float2(u - 1.0f, 1.0f + v);
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else if (v < 1.0f)
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uv = float2(2.0f - u, 1.0f - v);
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else
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uv = float2(u - 1.0f, v - 1.0f);
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}
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_LinearRepeat, uv, _BlitMipLevel);
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}
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float4 FragOctahedralProject(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 UV = saturate(input.texcoord);
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float3 dir = UnpackNormalOctQuadEncode(2.0f*UV - 1.0f);
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return float4(SAMPLE_TEXTURECUBE_LOD(_BlitCubeTexture, sampler_LinearRepeat, dir, _BlitMipLevel).rgb, 1);
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}
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// 8-bit single channel sampling/format conversions
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float4 FragOctahedralProjectLuminance(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 UV = saturate(input.texcoord);
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float3 dir = UnpackNormalOctQuadEncode(2.0f*UV - 1.0f);
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// sRGB/Rec.709
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return Luminance(SAMPLE_TEXTURECUBE_LOD(_BlitCubeTexture, sampler_LinearRepeat, dir, _BlitMipLevel)).xxxx;
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}
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float4 FragOctahedralProjectRedToRGBA(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 UV = saturate(input.texcoord);
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float3 dir = UnpackNormalOctQuadEncode(2.0f*UV - 1.0f);
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return SAMPLE_TEXTURECUBE_LOD(_BlitCubeTexture, sampler_LinearRepeat, dir, _BlitMipLevel).rrrr;
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}
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float4 FragOctahedralProjectAlphaToRGBA(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 UV = saturate(input.texcoord);
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float3 dir = UnpackNormalOctQuadEncode(2.0f*UV - 1.0f);
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return SAMPLE_TEXTURECUBE_LOD(_BlitCubeTexture, sampler_LinearRepeat, dir, _BlitMipLevel).aaaa;
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}
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float4 FragBilinearLuminance(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 uv = input.texcoord.xy;
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// sRGB/Rec.709
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return Luminance(SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_LinearRepeat, uv, _BlitMipLevel)).xxxx;
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}
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float4 FragBilinearRedToRGBA(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 uv = input.texcoord.xy;
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_LinearRepeat, uv, _BlitMipLevel).rrrr;
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}
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float4 FragBilinearAlphaToRGBA(Varyings input) : SV_Target
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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float2 uv = input.texcoord.xy;
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return SAMPLE_TEXTURE2D_X_LOD(_BlitTexture, sampler_LinearRepeat, uv, _BlitMipLevel).aaaa;
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}
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#endif //UNITY_CORE_BLIT_INCLUDED
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