#version 450

const int MAX_TEXTURES = 500;

layout(location = 0) in vec2 inTextCoords;
layout(location = 0) out vec4 outAlbedo;

struct Material{
    vec4 diffuseColor;
    uint hasTexture;
    uint textureIdx;
    uint padding[2];
};

layout(set = 2, binding = 0) readonly buffer MaterialUniform{
    Material materials[];
} matUniform;

layout(set = 3, binding = 0) uniform sampler2D textSampler[MAX_TEXTURES];

layout(push_constant) uniform pc{
    layout(offset = 64) uint materialIdx;
} push_constants;

void main()
{
    Material material = matUniform.materials[push_constants.materialIdx];
    if(material.hasTexture == 1){
        vec4 texColor = texture(textSampler[material.textureIdx],inTextCoords);
        if(texColor.a < 0.9){discard;}
        outAlbedo = texColor;
    } else{
        outAlbedo = material.diffuseColor;
    }
}