HaxeJolt

lib/haxejolt/JoltPhysics/Jolt/Shaders/HairSkinVertices.hlsl

@@ -0,0 +1,26 @@
+// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
+// SPDX-FileCopyrightText: 2026 Jorrit Rouwe
+// SPDX-License-Identifier: MIT
+
+#include "HairSkinVerticesBindings.h"
+#include "HairCommon.h"
+
+JPH_SHADER_FUNCTION_BEGIN(void, main, cHairPerVertexBatch, 1, 1)
+	JPH_SHADER_PARAM_THREAD_ID(tid)
+JPH_SHADER_FUNCTION_END
+{
+	// Check if this is a valid vertex
+	uint vtx = tid.x;
+		if (vtx >= cNumSkinVertices)
+			return;
+
+	// Skin the vertex
+	float3 v = float3(0, 0, 0);
+	for (uint w = vtx * cNumSkinWeightsPerVertex, w_end = w + cNumSkinWeightsPerVertex; w < w_end; ++w)
+	{
+		JPH_HairSkinWeight sw = gScalpSkinWeights[w];
+		if (sw.mWeight > 0.0f)
+			v += sw.mWeight * JPH_Mat44Mul3x4Vec3(gScalpJointMatrices[sw.mJointIdx], gScalpVertices[vtx]);
+	}
+	gScalpVerticesOut[vtx] = v;
+}