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HaxeJolt

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Onek8
2026-03-04 00:50:15 -08:00
parent 9126175569
commit 4211317c03
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lib/haxejolt/JoltPhysics/Jolt/Shaders/HairApplyGlobalPose.h Normal file
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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2026 Jorrit Rouwe
// SPDX-License-Identifier: MIT
void ApplyGlobalPose(JPH_IN_OUT(JPH_HairPosition) ioPos, float3 inRestPosition, JPH_Quat inRestOrientation, JPH_IN(JPH_HairGlobalPoseTransform) inGlobalPoseTransform, JPH_IN(JPH_HairMaterial) inMaterial, float inStrandFraction)
{
// LERP between stored global pose and global pose skinned to the scalp
float skin_factor = GradientSamplerSample(inMaterial.mSkinGlobalPose, inStrandFraction);
float3 in_position = inRestPosition;
in_position += skin_factor * (inGlobalPoseTransform.mPosition + JPH_QuatMulVec3(inGlobalPoseTransform.mRotation, in_position) - in_position);
JPH_Quat in_rotation = inRestOrientation;
in_rotation += skin_factor * (JPH_QuatMulQuat(inGlobalPoseTransform.mRotation, in_rotation) - in_rotation);
// LERP between simulated position and skinned position
float pose_factor = GradientSamplerSample(inMaterial.mGlobalPose, inStrandFraction);
ioPos.mPosition += pose_factor * (in_position - ioPos.mPosition);
ioPos.mRotation += pose_factor * (in_rotation - ioPos.mRotation);
ioPos.mRotation = normalize(ioPos.mRotation);
}