Final day of opengl. Animations mostly work but there's either a problem with the model or the way it's loaded from assimp.

53-final-cleanup/shaders/45-framebuffers.vert.glsl

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+#version 330 core
+layout (location = 0) in vec3 aPos;
+layout (location = 1) in vec3 aNormal;
+layout (location = 2) in vec2 aTexCoords;
+layout (location = 3) in vec3 aTangent;
+layout (location = 4) in vec3 aBitangent;
+layout (location = 5) in ivec4 boneIds;
+layout (location = 6) in vec4 weights;
+layout (location = 7) in int bone_count;
+
+out vec3 FragPos;
+out vec3 Normal;
+out vec2 TexCoords;
+out vec4 FragPosLightSpace;
+out mat3 TBN;
+
+uniform mat4 projection;
+uniform mat4 view;
+uniform mat4 model;
+uniform mat4 lightSpaceMatrix;
+uniform bool hasBones;
+
+const int MAX_BONES = 100;
+uniform mat4 finalBonesMatrices[MAX_BONES];
+
+vec4 AnimateBones() {
+  vec4 totalPosition = vec4(0.0f);
+
+  for(int i = 0; i < bone_count; i++) {
+    int bone_id = boneIds[i];
+
+    if(bone_id >= MAX_BONES) {
+      totalPosition = vec4(aPos, 1.0f);
+      break;
+    }
+
+    // bone found, mark it
+    vec4 localPosition = finalBonesMatrices[bone_id] * vec4(aPos, 1.0f);
+    totalPosition += localPosition * weights[i];
+    vec3 localNormal = mat3(finalBonesMatrices[bone_id]) * aNormal;
+  }
+
+  if(totalPosition == vec4(0.0f)) {
+    return vec4(aPos, 1.0f);
+  } else {
+    return totalPosition;
+  }
+}
+
+void main()
+{
+  vec4 totalPosition = hasBones ? AnimateBones() : vec4(aPos, 1.0);
+
+  FragPos = vec3(model * vec4(aPos, 1.0));
+  Normal = transpose(inverse(mat3(model))) * aNormal;
+  TexCoords = aTexCoords;
+  FragPosLightSpace = lightSpaceMatrix * vec4(FragPos, 1.0);
+  gl_Position = projection * view * model * totalPosition;
+
+  vec3 T = normalize(vec3(model * vec4(aTangent, 0.0)));
+  vec3 B = normalize(vec3(model * vec4(aBitangent, 0.0)));
+  vec3 N = normalize(vec3(model * vec4(aNormal, 0.0)));
+  TBN = mat3(T, B, N);
+}