#version 330
in vec3 pos;
in vec3 unscaledNormal;
in vec2 vTexCoord;

in ivec4 boneIds;
in vec4 boneWeights;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;

uniform mat4 bones[16 + 1];

out vec3 normal;
out vec2 texCoords;

out vec3 lightPos, viewPos, worldPos;

void main() {
	texCoords = vTexCoord;

	mat4 boneTrans = bones[boneIds.x] * boneWeights.x;
	boneTrans += bones[boneIds.y] * boneWeights.y;
	boneTrans += bones[boneIds.z] * boneWeights.z;
	boneTrans += bones[boneIds.w] * boneWeights.w;

	mat4 bonedModel = model * boneTrans;

	worldPos = vec3(bonedModel * vec4(pos, 1.f));

	normal = mat3(transpose(inverse(bonedModel))) * unscaledNormal;
	
	gl_Position = projection * view * bonedModel * vec4(pos, 1.f);
}