diff --git a/examples/models/resources/shaders/glsl330/skinning.vs b/examples/models/resources/shaders/glsl330/skinning.vs index 73ecca51e9c2..43bbca76c18e 100644 --- a/examples/models/resources/shaders/glsl330/skinning.vs +++ b/examples/models/resources/shaders/glsl330/skinning.vs @@ -6,16 +6,19 @@ in vec3 vertexPosition; in vec2 vertexTexCoord; in vec4 vertexColor; +in vec3 vertexNormal; in vec4 vertexBoneIds; in vec4 vertexBoneWeights; // Input uniform values uniform mat4 mvp; +uniform mat4 matNormal; uniform mat4 boneMatrices[MAX_BONE_NUM]; // Output vertex attributes (to fragment shader) out vec2 fragTexCoord; out vec4 fragColor; +out vec3 fragNormal; void main() { @@ -29,9 +32,18 @@ void main() vertexBoneWeights.y*(boneMatrices[boneIndex1]*vec4(vertexPosition, 1.0)) + vertexBoneWeights.z*(boneMatrices[boneIndex2]*vec4(vertexPosition, 1.0)) + vertexBoneWeights.w*(boneMatrices[boneIndex3]*vec4(vertexPosition, 1.0)); - + + vec4 skinnedNormal = + vertexBoneWeights.x*(boneMatrices[boneIndex0]*vec4(vertexNormal, 0.0)) + + vertexBoneWeights.y*(boneMatrices[boneIndex1]*vec4(vertexNormal, 0.0)) + + vertexBoneWeights.z*(boneMatrices[boneIndex2]*vec4(vertexNormal, 0.0)) + + vertexBoneWeights.w*(boneMatrices[boneIndex3]*vec4(vertexNormal, 0.0)); + skinnedNormal.w = 0.0; + fragTexCoord = vertexTexCoord; fragColor = vertexColor; + fragNormal = normalize(vec3(matNormal*skinnedNormal)); + gl_Position = mvp*skinnedPosition; } \ No newline at end of file