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perf: Compute bone matrices on CPU, not in vertex shader

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This commit is contained in:
Vsevolod Kremianskii 2021-02-14 14:18:37 +07:00
parent 8b3b940748
commit 0ef7d158fe
2 changed files with 11 additions and 10 deletions
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19
src/render/shaders.cpp
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@ -384,7 +384,7 @@ out vec2 fragLightmapCoords;
out mat3 fragTanSpace;
void main() {
vec3 newPosition = vec3(0.0);
vec4 P = vec4(0.0);
if (isFeatureEnabled(FEATURE_SKELETAL)) {
float weight0 = aBoneWeights.x;
@ -397,19 +397,20 @@ void main() {
int index2 = int(aBoneIndices.z);
int index3 = int(aBoneIndices.w);
vec4 position4 = vec4(aPosition, 1.0);
vec4 position = vec4(aPosition, 1.0);
newPosition += weight0 * (uAbsTransformInv * uBones[index0] * uAbsTransform * position4).xyz;
newPosition += weight1 * (uAbsTransformInv * uBones[index1] * uAbsTransform * position4).xyz;
newPosition += weight2 * (uAbsTransformInv * uBones[index2] * uAbsTransform * position4).xyz;
newPosition += weight3 * (uAbsTransformInv * uBones[index3] * uAbsTransform * position4).xyz;
P += weight0 * uBones[index0] * position;
P += weight1 * uBones[index1] * position;
P += weight2 * uBones[index2] * position;
P += weight3 * uBones[index3] * position;
P = vec4(P.xyz, 1.0);
} else {
newPosition = aPosition;
P = vec4(aPosition, 1.0);
}
vec4 newPosition4 = vec4(newPosition, 1.0);
fragPosition = vec3(uModel * newPosition4);
fragPosition = vec3(uModel * P);
fragNormal = mat3(transpose(inverse(uModel))) * aNormal;
fragTexCoords = aTexCoords;
fragLightmapCoords = aLightmapCoords;

2
src/scene/node/modelnodescenenode.cpp
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@ -178,7 +178,7 @@ void ModelNodeSceneNode::renderSingle(bool shadowPass) const {
ModelNodeSceneNode *bone = _modelSceneNode->getModelNodeByIndex(nodeIdx);
if (bone) {
locals.skeletal->bones[boneIdx] = bone->boneTransform();
locals.skeletal->bones[boneIdx] = _modelNode->absoluteTransformInverse() * bone->boneTransform() * _modelNode->absoluteTransform();
}
}
}