#version 450

const int MAX_TEXTURES = 128;
const float GAMMA_CONST = 0.4545;
layout(location = 0) in vec2 inUV;

layout(location = 0) out vec4 outColor;
layout(push_constant) uniform pc {
    layout(offset = 28) uint textureIndex;
} push_constants;

layout(set = 1, binding = 0) uniform sampler2D spriteTextures[MAX_TEXTURES];

vec4 gamma(vec4 color){
    return color = vec4(pow(color.rgb,vec3(GAMMA_CONST)),color.a);
}

void main() {
    vec4 tex = texture(spriteTextures[push_constants.textureIndex], inUV);
    outColor = gamma(tex);

    if (outColor.a <= 0.09) {
        discard;
    }
}