51 lines
1.8 KiB
HLSL
51 lines
1.8 KiB
HLSL
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#ifdef UNITY_PROCEDURAL_INSTANCING_ENABLED
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struct IndirectShaderData
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{
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float4x4 PositionMatrix;
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float4x4 InversePositionMatrix;
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float4 ControlData;
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};
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#if defined(SHADER_API_GLCORE) || defined(SHADER_API_D3D11) || defined(SHADER_API_GLES3) || defined(SHADER_API_METAL) || defined(SHADER_API_VULKAN) || defined(SHADER_API_PSSL) || defined(SHADER_API_XBOXONE)
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StructuredBuffer<IndirectShaderData> IndirectShaderDataBuffer;
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StructuredBuffer<IndirectShaderData> VisibleShaderDataBuffer;
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#endif
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#endif
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void setupScale()
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{
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#ifdef UNITY_PROCEDURAL_INSTANCING_ENABLED
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#ifdef GPU_FRUSTUM_ON
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unity_ObjectToWorld = VisibleShaderDataBuffer[unity_InstanceID].PositionMatrix;
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unity_WorldToObject = VisibleShaderDataBuffer[unity_InstanceID].InversePositionMatrix;
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#else
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unity_ObjectToWorld = IndirectShaderDataBuffer[unity_InstanceID].PositionMatrix;
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unity_WorldToObject = IndirectShaderDataBuffer[unity_InstanceID].InversePositionMatrix;
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#endif
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#ifdef FAR_CULL_ON_PROCEDURAL_INSTANCING
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#define transformPosition mul(unity_ObjectToWorld, float4(0,0,0,1)).xyz
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#define distanceToCamera length(transformPosition - _WorldSpaceCameraPos.xyz)
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float cull = 1.0 - saturate((distanceToCamera - _CullFarStart) / _CullFarDistance);
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unity_ObjectToWorld = mul(unity_ObjectToWorld, float4x4(cull, 0, 0, 0, 0, cull, 0, 0, 0, 0, cull, 0, 0, 0, 0, 1));
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#undef transformPosition
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#undef distanceToCamera
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#endif
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#endif
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}
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void setup()
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{
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#ifdef UNITY_PROCEDURAL_INSTANCING_ENABLED
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#ifdef GPU_FRUSTUM_ON
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unity_ObjectToWorld = VisibleShaderDataBuffer[unity_InstanceID].PositionMatrix;
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unity_WorldToObject = VisibleShaderDataBuffer[unity_InstanceID].InversePositionMatrix;
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#else
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unity_ObjectToWorld = IndirectShaderDataBuffer[unity_InstanceID].PositionMatrix;
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unity_WorldToObject = IndirectShaderDataBuffer[unity_InstanceID].InversePositionMatrix;
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#endif
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#endif
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}
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