71 lines
1.7 KiB
GLSL
71 lines
1.7 KiB
GLSL
//Vertex Shader
|
|
#version 400 core
|
|
|
|
|
|
|
|
//input buffers
|
|
layout (location = 0) in vec3 aPos;
|
|
layout (location = 1) in vec3 aNormal;
|
|
layout (location = 2) in vec4 aWeights;
|
|
layout (location = 3) in vec4 aIndex;
|
|
layout (location = 4) in vec2 aTex;
|
|
|
|
|
|
//coordinate space transformation matrices
|
|
uniform mat4 transform;
|
|
uniform mat4 model;
|
|
uniform mat4 view;
|
|
uniform mat4 projection;
|
|
uniform mat4 lightSpaceMatrix;
|
|
|
|
//bone related variables
|
|
const int MAX_WEIGHTS = 4;
|
|
const int MAX_BONES = 100;
|
|
uniform mat4 bones[MAX_BONES];
|
|
uniform int hasBones;
|
|
uniform int numBones;
|
|
|
|
|
|
|
|
//output buffers
|
|
out vec3 Normal;
|
|
out vec3 FragPos;
|
|
out vec2 TexCoord;
|
|
out vec4 FragPosLightSpace;
|
|
|
|
|
|
|
|
|
|
void main() {
|
|
|
|
|
|
|
|
//calculate bone transform
|
|
mat4 BoneTransform = (bones[int(aIndex[0])] * aWeights[0]);
|
|
BoneTransform = BoneTransform + (bones[int(aIndex[1])] * aWeights[1]);
|
|
BoneTransform = BoneTransform + (bones[int(aIndex[2])] * aWeights[2]);
|
|
BoneTransform = BoneTransform + (bones[int(aIndex[3])] * aWeights[3]);
|
|
|
|
|
|
//apply bone transform to position vectors
|
|
vec4 FinalVertex = BoneTransform * vec4(aPos, 1.0);
|
|
vec4 FinalNormal = BoneTransform * vec4(aNormal, 1.0);
|
|
|
|
|
|
//make sure the W component is 1.0
|
|
FinalVertex = vec4(FinalVertex.xyz, 1.0);
|
|
FinalNormal = vec4(FinalNormal.xyz, 1.0);
|
|
|
|
|
|
//push frag, normal, and texture positions to fragment shader
|
|
FragPos = vec3(model * FinalVertex);
|
|
Normal = mat3(transpose(inverse(model))) * FinalNormal.xyz;
|
|
TexCoord = aTex;
|
|
|
|
//shadow map stuff
|
|
FragPosLightSpace = lightSpaceMatrix * vec4(FragPos, 1.0);
|
|
|
|
|
|
//set final position with opengl space
|
|
gl_Position = projection * view * model * FinalVertex;
|
|
} |