mirror of
https://github.com/devZoGok/vb01.git
synced 2026-08-26 19:43:30 +00:00
devZoGok
4f4bc88956
model space positions are retrieved from bones supported more than 4 bones improved global and local orientation methods improved vector angle method
79 lines
2.2 KiB
GLSL
Executable File
79 lines
2.2 KiB
GLSL
Executable File
#version 330 core
|
|
|
|
const int numBones=1;
|
|
const int numVertGroups=1;
|
|
const int numMaxInfluences = 4;
|
|
|
|
layout (location=0) in vec3 aPos;
|
|
layout (location=1) in vec3 aNorm;
|
|
layout (location=2) in vec2 aTexCoords;
|
|
layout (location=3) in vec3 aTan;
|
|
layout (location=4) in vec3 aBiTan;
|
|
layout (location=5) in vec4 aWeight;
|
|
layout (location=6) in ivec4 aBoneIndices;
|
|
|
|
out vec3 fragPos;
|
|
out vec3 norm;
|
|
out vec3 tan;
|
|
out vec3 biTan;
|
|
out vec2 texCoords;
|
|
|
|
struct Bone{
|
|
float angle;
|
|
vec3 pos,trans,rotAxis,scale;
|
|
int vertGroup,parent;
|
|
};
|
|
|
|
uniform bool animated;
|
|
uniform Bone bones[numBones];
|
|
uniform mat4 model;
|
|
uniform mat4 view;
|
|
uniform mat4 proj;
|
|
|
|
void main(){
|
|
vec4 vertPos=vec4(aPos,1);
|
|
if(animated){
|
|
for(int i = 0; i < numBones; i++){
|
|
Bone bone = bones[i];
|
|
float weight = 0;
|
|
|
|
for(int j = 0; j < numMaxInfluences; j++){
|
|
if(bone.vertGroup == aBoneIndices[j])
|
|
weight = aWeight[j];
|
|
}
|
|
|
|
while(bone.parent!=-1){
|
|
float angle = weight * bone.angle;
|
|
vec3 trans = bone.trans;
|
|
vec3 axis = bone.rotAxis;
|
|
vec3 scale = bone.scale;
|
|
vec4 bonePos = vec4(bone.pos, 1);
|
|
|
|
float s = sin(angle);
|
|
float c = cos(angle);
|
|
float oc = 1.0 - c;
|
|
|
|
mat4 rotMat;
|
|
rotMat[0] = vec4(oc * axis.x * axis.x + c,oc * axis.x * axis.y + axis.z * s,oc * axis.z * axis.x - axis.y * s, 0.0);
|
|
rotMat[1] = vec4(oc * axis.x * axis.y - axis.z * s,oc * axis.y * axis.y + c,oc * axis.y * axis.z + axis.x * s, 0.0);
|
|
rotMat[2] = vec4(oc * axis.z * axis.x + axis.y * s,oc * axis.y * axis.z - axis.x * s,oc * axis.z * axis.z + c, 0.0);
|
|
rotMat[3] = vec4(0, 0, 0, 1);
|
|
|
|
vertPos += -(vertPos - bonePos) + rotMat * (vertPos - bonePos);
|
|
vec4 vertToBone = vec4(vertPos.xyz - bonePos.xyz, 1);
|
|
vertPos.xyz += -weight * vertToBone.xyz + weight * vec3(scale.x * vertToBone.x, scale.y * vertToBone.y, scale.z * vertToBone.z);
|
|
vertPos.xyz += weight * trans;
|
|
|
|
bone = bones[bone.parent];
|
|
}
|
|
}
|
|
}
|
|
|
|
gl_Position = proj * view * model * vertPos;
|
|
fragPos = vec3(model * vec4(aPos, 1));
|
|
norm = mat3(transpose(inverse(model))) * aNorm;
|
|
tan = mat3(transpose(inverse(model))) * aTan;
|
|
biTan = mat3(transpose(inverse(model))) * aBiTan;
|
|
texCoords = aTexCoords;
|
|
}
|