90 lines
4.2 KiB
C#
90 lines
4.2 KiB
C#
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namespace UnityEngine.Rendering
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{
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// TODO make consistent with InstanceOcclusionCullerShaderVariables
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[GenerateHLSL(needAccessors = false, generateCBuffer = true)]
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internal unsafe struct OcclusionCullingCommonShaderVariables
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{
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[HLSLArray(OccluderContext.k_MaxOccluderMips, typeof(ShaderGenUInt4))]
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public fixed uint _OccluderMipBounds[OccluderContext.k_MaxOccluderMips * 4];
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[HLSLArray(OccluderContext.k_MaxSubviewsPerView, typeof(Matrix4x4))]
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public fixed float _ViewProjMatrix[OccluderContext.k_MaxSubviewsPerView * 16]; // from view-centered world space
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[HLSLArray(OccluderContext.k_MaxSubviewsPerView, typeof(Vector4))]
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public fixed float _ViewOriginWorldSpace[OccluderContext.k_MaxSubviewsPerView * 4];
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[HLSLArray(OccluderContext.k_MaxSubviewsPerView, typeof(Vector4))]
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public fixed float _FacingDirWorldSpace[OccluderContext.k_MaxSubviewsPerView * 4];
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[HLSLArray(OccluderContext.k_MaxSubviewsPerView, typeof(Vector4))]
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public fixed float _RadialDirWorldSpace[OccluderContext.k_MaxSubviewsPerView * 4];
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public Vector4 _DepthSizeInOccluderPixels;
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public Vector4 _OccluderDepthPyramidSize;
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public uint _OccluderMipLayoutSizeX;
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public uint _OccluderMipLayoutSizeY;
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public uint _OcclusionTestDebugFlags;
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public uint _OcclusionCullingCommonPad0;
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public int _OcclusionTestCount;
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public int _OccluderSubviewIndices; // packed 4 bits each
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public int _CullingSplitIndices; // packed 4 bits each
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public int _CullingSplitMask; // only used for early out
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internal OcclusionCullingCommonShaderVariables(
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in OccluderContext occluderCtx,
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in InstanceOcclusionTestSubviewSettings subviewSettings,
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bool occlusionOverlayCountVisible,
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bool overrideOcclusionTestToAlwaysPass)
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{
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for (int i = 0; i < occluderCtx.subviewCount; ++i)
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{
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if (occluderCtx.IsSubviewValid(i))
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{
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unsafe
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{
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for (int j = 0; j < 16; ++j)
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_ViewProjMatrix[16 * i + j] = occluderCtx.subviewData[i].viewProjMatrix[j];
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for (int j = 0; j < 4; ++j)
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{
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_ViewOriginWorldSpace[4 * i + j] = occluderCtx.subviewData[i].viewOriginWorldSpace[j];
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_FacingDirWorldSpace[4 * i + j] = occluderCtx.subviewData[i].facingDirWorldSpace[j];
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_RadialDirWorldSpace[4 * i + j] = occluderCtx.subviewData[i].radialDirWorldSpace[j];
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}
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}
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}
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}
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_OccluderMipLayoutSizeX = (uint)occluderCtx.occluderMipLayoutSize.x;
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_OccluderMipLayoutSizeY = (uint)occluderCtx.occluderMipLayoutSize.y;
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_OcclusionTestDebugFlags
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= (overrideOcclusionTestToAlwaysPass ? (uint)OcclusionTestDebugFlag.AlwaysPass : 0)
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| (occlusionOverlayCountVisible ? (uint)OcclusionTestDebugFlag.CountVisible : 0);
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_OcclusionCullingCommonPad0 = 0;
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_OcclusionTestCount = subviewSettings.testCount;
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_OccluderSubviewIndices = subviewSettings.occluderSubviewIndices;
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_CullingSplitIndices = subviewSettings.cullingSplitIndices;
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_CullingSplitMask = subviewSettings.cullingSplitMask;
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_DepthSizeInOccluderPixels = occluderCtx.depthBufferSizeInOccluderPixels;
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Vector2Int textureSize = occluderCtx.occluderDepthPyramidSize;
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_OccluderDepthPyramidSize = new Vector4(textureSize.x, textureSize.y, 1.0f / textureSize.x, 1.0f / textureSize.y);
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for (int i = 0; i < occluderCtx.occluderMipBounds.Length; ++i)
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{
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var mipBounds = occluderCtx.occluderMipBounds[i];
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unsafe
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{
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_OccluderMipBounds[4*i + 0] = (uint)mipBounds.offset.x;
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_OccluderMipBounds[4*i + 1] = (uint)mipBounds.offset.y;
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_OccluderMipBounds[4*i + 2] = (uint)mipBounds.size.x;
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_OccluderMipBounds[4*i + 3] = (uint)mipBounds.size.y;
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}
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}
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}
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}
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}
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