//*VERTEX*
#version 460


struct SpotShadowMapSet
{
	uint entity_id;    
	uint shadow_id;
    uint shadow_texture_id;   
    uint frame_buffer_id;    	
    float far_plane;
	uint padding[3];
    mat4 light_space_proj;
    mat4 light_space_view;
};

layout(binding = 1) readonly buffer positions_buffer 
{
	mat4 model_matrix[];
};

layout (std430, binding = 6) readonly buffer spot_shadow_map_sets
{	
	SpotShadowMapSet spot_shadows[];
};

layout(binding = 0) uniform shadow_per_frame
{
	vec3 camera_pos;
	uint shadow_idxs;
};

layout (location = 0) in vec3 inPos; 		//12 bytes : 0
layout (location = 1) in vec2 inUV;  		//8 Bytes  : 12
layout (location = 2) in uvec3 inChunkID; 	//12 Bytes : 20
layout (location = 3) in vec3 inNormal;  	//8 Bytes  : 12 
layout (location = 4) in vec3 inBiTangent;
layout (location = 5) in vec3 inTangent;

layout (location=0) out VS_OUT
{
	vec2 vsUV;
    flat uint vsMaterialID;
}vs_out;

void main() 
{  	
	 uint chunkid = inChunkID[0];
	 mat4 model = model_matrix[chunkid];
	 mat4 proj = spot_shadows[shadow_idxs].light_space_proj;
	 mat4 view = spot_shadows[shadow_idxs].light_space_view;
	//view = mat4(1);
	//proj = mat4(1);
	 gl_Position =  proj * view * model * vec4(inPos, 1.0);
	 vs_out.vsUV = inUV;
	 vs_out.vsMaterialID = inChunkID[1];
}