71 lines
2.1 KiB
HLSL
71 lines
2.1 KiB
HLSL
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#ifndef UNIVERSAL_COPY_DEPTH_PASS_INCLUDED
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#define UNIVERSAL_COPY_DEPTH_PASS_INCLUDED
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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/Runtime/Utilities/Blit.hlsl"
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#if defined(_DEPTH_MSAA_2)
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#define MSAA_SAMPLES 2
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#elif defined(_DEPTH_MSAA_4)
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#define MSAA_SAMPLES 4
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#elif defined(_DEPTH_MSAA_8)
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#define MSAA_SAMPLES 8
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#else
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#define MSAA_SAMPLES 1
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#endif
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#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
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#define DEPTH_TEXTURE_MS(name, samples) Texture2DMSArray<float, samples> name
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#define DEPTH_TEXTURE(name) TEXTURE2D_ARRAY_FLOAT(name)
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#define LOAD(uv, sampleIndex) LOAD_TEXTURE2D_ARRAY_MSAA(_CameraDepthAttachment, uv, unity_StereoEyeIndex, sampleIndex)
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#define SAMPLE(uv) SAMPLE_TEXTURE2D_ARRAY(_CameraDepthAttachment, sampler_CameraDepthAttachment, uv, unity_StereoEyeIndex).r
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#else
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#define DEPTH_TEXTURE_MS(name, samples) Texture2DMS<float, samples> name
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#define DEPTH_TEXTURE(name) TEXTURE2D_FLOAT(name)
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#define LOAD(uv, sampleIndex) LOAD_TEXTURE2D_MSAA(_CameraDepthAttachment, uv, sampleIndex)
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#define SAMPLE(uv) SAMPLE_DEPTH_TEXTURE(_CameraDepthAttachment, sampler_CameraDepthAttachment, uv)
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#endif
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#if MSAA_SAMPLES == 1
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DEPTH_TEXTURE(_CameraDepthAttachment);
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SAMPLER(sampler_CameraDepthAttachment);
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#else
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DEPTH_TEXTURE_MS(_CameraDepthAttachment, MSAA_SAMPLES);
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float4 _CameraDepthAttachment_TexelSize;
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#endif
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#if UNITY_REVERSED_Z
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#define DEPTH_DEFAULT_VALUE 1.0
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#define DEPTH_OP min
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#else
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#define DEPTH_DEFAULT_VALUE 0.0
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#define DEPTH_OP max
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#endif
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float SampleDepth(float2 uv)
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{
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#if MSAA_SAMPLES == 1
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return SAMPLE(uv);
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#else
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int2 coord = int2(uv * _CameraDepthAttachment_TexelSize.zw);
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float outDepth = DEPTH_DEFAULT_VALUE;
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UNITY_UNROLL
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for (int i = 0; i < MSAA_SAMPLES; ++i)
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outDepth = DEPTH_OP(LOAD(coord, i), outDepth);
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return outDepth;
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#endif
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}
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#if defined(_OUTPUT_DEPTH)
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float frag(Varyings input) : SV_Depth
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#else
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float frag(Varyings input) : SV_Target
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#endif
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{
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UNITY_SETUP_STEREO_EYE_INDEX_POST_VERTEX(input);
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return SampleDepth(input.texcoord);
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}
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#endif
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