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fixed morphing when moving bones

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devZoGok
2021-10-19 19:06:41 +03:00
parent 443059586d
commit 347286aa1f
2 changed files with 25 additions and 18 deletions
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mesh.cpp
-1
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@@ -195,7 +195,6 @@ namespace vb01{
shader->setVec3(scale, "bones[" + to_string(i) + "].scale");
shader->setInt(vertGroupId, "bones[" + to_string(i) + "].vertGroup");
shader->setInt(parentId, "bones[" + to_string(i) + "].parent");
shader->setInt(i, "bones[" + to_string(i) + "].id");
}
}
texture.vert
+25 -17
View File
@@ -5,6 +5,7 @@ const int numVertGroups=1;
const int numMaxInfluences = 4;
mat4 transform[numBones];
mat4 poseTransform[numBones];
layout (location=0) in vec3 aPos;
layout (location=1) in vec3 aNorm;
@@ -23,7 +24,7 @@ out vec2 texCoords;
struct Bone{
float angle;
vec3 pos,trans,rotAxis,scale;
int vertGroup,parent,id;
int vertGroup,parent;
};
uniform bool animated;
@@ -76,32 +77,39 @@ float getWeight(Bone bone){
void main(){
vec4 vertPos = vec4(aPos, 1);
if(animated){
bool anyWeights = false;
for(int i = 0; i < numMaxInfluences; i++)
if(aWeight[i] > 0)
anyWeights = true;
if(animated && anyWeights){
for(int i = 0; i < numBones; i++){
transform[i] = createTranslationMatrix(bones[i].pos);
vec3 trans = bones[i].trans;
float angle = bones[i].angle;
vec3 axis = bones[i].rotAxis;
vec3 scale = bones[i].scale;
mat4 animTransform = createTranslationMatrix(trans) * createRotationMatrix(angle, axis) * createScaleMatrix(scale);
poseTransform[i] = transform[i] * animTransform;
}
for(int i = 1; i < numBones; i++){
mat4 localTransform = inverse(transform[bones[i].parent]) * poseTransform[i];
poseTransform[i] = poseTransform[bones[i].parent] * localTransform;
}
vec3 v = vec3(0);
for(int i = 0; i < numBones; i++){
Bone bone = bones[i];
float weight = getWeight(bone);
while(bone.parent != -1){
vec3 trans = bone.trans;
float angle = bone.angle;
vec3 axis = bone.rotAxis;
vec3 scale = bone.scale;
mat4 animTransform = createTranslationMatrix(weight * trans) * createRotationMatrix(weight * angle, axis);
float weight = getWeight(bones[i]);
vec4 boneLocalVert = inverse(transform[i]) * vertPos;
v += (weight * poseTransform[i] * boneLocalVert).xyz;
vec4 boneLocalVert = inverse(transform[bone.id]) * vertPos;
vertPos = (transform[bone.id] * animTransform * boneLocalVert);
bone = bones[bone.parent];
}
}
vertPos.xyz = v;
}
gl_Position = proj * view * model * vertPos;
fragPos = vec3(model * vec4(aPos, 1));
fragPos = vec3(model * vertPos);
norm = mat3(transpose(inverse(model))) * aNorm;
tan = mat3(transpose(inverse(model))) * aTan;
biTan = mat3(transpose(inverse(model))) * aBiTan;