73 lines
2.6 KiB
HLSL
73 lines
2.6 KiB
HLSL
// The following comment prevents Unity from auto upgrading the shader. Please keep it to keep backward compatibility.
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// UNITY_SHADER_NO_UPGRADE
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#ifndef _VLB_SHADER_SPECIFIC_INCLUDED_
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#define _VLB_SHADER_SPECIFIC_INCLUDED_
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/////////////////////////////////////////////////////
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// Redefine missing functions from legacy pipeline
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/////////////////////////////////////////////////////
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inline float4 ComputeNonStereoScreenPos(float4 pos)
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{
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float4 o = pos * 0.5f;
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o.xy = float2(o.x, o.y * _ProjectionParams.x) + o.w;
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o.zw = pos.zw;
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return o;
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}
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#define TransformStereoScreenSpaceTex(uv, w) uv
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inline float4 ComputeScreenPos(float4 pos)
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{
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float4 o = ComputeNonStereoScreenPos(pos);
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#if defined(UNITY_SINGLE_PASS_STEREO)
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o.xy = TransformStereoScreenSpaceTex(o.xy, pos.w);
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#endif
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return o;
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}
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/////////////////////////////////////////////////////
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// POSITION TRANSFORM
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inline float4 VLBObjectToClipPos(in float3 pos) { return mul(UNITY_MATRIX_VP, mul(UNITY_MATRIX_M, float4(pos.xyz, 1.0))); }
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// Don't use UNITY_MATRIX_M directly here, because ApplyCameraTranslationToMatrix has been applied to it to substract the camera position.
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// But we can't use GetRawUnityObjectToWorld neither, since it doesn't work on Unity 2018.4.19 and HDRP 4.10.0 with GPUInstancing.
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// So we counter the effect of ApplyCameraTranslationToMatrix by adding the _WorldSpaceCameraPos back.
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inline float4 VLBObjectToWorldPos(in float4 pos)
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{
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float4x4 modelMatrix = UNITY_MATRIX_M;
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#if (SHADEROPTIONS_CAMERA_RELATIVE_RENDERING != 0)
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modelMatrix._m03_m13_m23 += _WorldSpaceCameraPos;
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#endif
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return mul(modelMatrix, pos);
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}
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#define VLBObjectToViewPos(pos) (mul(UNITY_MATRIX_V, mul(UNITY_MATRIX_M, float4(pos.xyz, 1.0))).xyz)
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// FRUSTUM PLANES
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#define VLBFrustumPlanes _FrustumPlanes
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// CAMERA
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inline float3 __VLBWorldToObjectPos(in float3 pos) { return mul(UNITY_MATRIX_I_M, float4(pos, 1.0)).xyz; }
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inline float3 VLBGetCameraPositionObjectSpace(float3 scaleObjectSpace)
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{
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// getting access directly to _WorldSpaceCameraPos gives wrong values
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return __VLBWorldToObjectPos(GetCurrentViewPosition()) * scaleObjectSpace;
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}
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// DEPTH
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#define VLBSampleDepthTexture(/*float4*/uv) (SampleCameraDepth((uv.xy) / (uv.w)))
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#define VLBLinearEyeDepth(depth) LinearEyeDepth((depth), _ZBufferParams)
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inline void ApplyPipelineSpecificIntensityModifier(inout float intensity)
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{
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#if defined(UNITY_SHADER_VARIABLES_INCLUDED) && UNITY_VERSION >= 202110
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intensity *= lerp(1.0, GetCurrentExposureMultiplier(), VLB_GET_PROP(_HDRPExposureWeight));
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#endif
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}
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#endif // _VLB_SHADER_SPECIFIC_INCLUDED_
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