36 lines
1.3 KiB
HLSL
36 lines
1.3 KiB
HLSL
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// Helper include for using XRVisibilityMesh vertex shader
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#include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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struct AttributesXR
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{
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float4 vertex : POSITION;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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Varyings VertVisibilityMeshXR(AttributesXR IN)
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{
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Varyings OUT;
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UNITY_SETUP_INSTANCE_ID(IN);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(OUT);
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OUT.positionCS = mul(UNITY_MATRIX_M, float4(IN.vertex.xy * float2(2.0f, -2.0f) + float2(-1.0f, 1.0), UNITY_NEAR_CLIP_VALUE, 1.0f));
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#if defined(UNITY_STEREO_INSTANCING_ENABLED)
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OUT.stereoTargetEyeIndexAsRTArrayIdx = IN.vertex.z;
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#elif defined(UNITY_STEREO_MULTIVIEW_ENABLED)
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if (unity_StereoEyeIndex != uint(IN.vertex.z))
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OUT.positionCS = float4(0.0f, 0.0f, 0.0f, 0.0f);
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#endif
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// Mimic same logic of GetFullScreenTriangleVertexPosition, where the v is flipped
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// This matches the orientation of the screen to avoid additional y-flips
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#if UNITY_UV_STARTS_AT_TOP
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OUT.texcoord.xy = DYNAMIC_SCALING_APPLY_SCALEBIAS((OUT.positionCS.xy) * float2(0.5f, -0.5f) + float2(0.5f, 0.5f));
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#else
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OUT.texcoord.xy = DYNAMIC_SCALING_APPLY_SCALEBIAS((OUT.positionCS.xy) * float2(0.5f, 0.5f) + float2(0.5f, 0.5f));
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#endif
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return OUT;
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}
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