Grafika_2024/projekt_grk/shaders/shader_sun.frag

#version 430 core

layout (location = 0) out vec4 outColor;
layout (location = 1) out vec4 BrightColor;
uniform float exposition;
uniform sampler2D sunTexture;

in vec2 TexCoords;

void main()
{
   vec3 textureColor = texture(sunTexture, TexCoords).xyz;
   vec3 adjustedColor = textureColor * exposition;
   vec3 finalColor = clamp(adjustedColor, 0.0, 1.0);
   outColor = vec4(finalColor, 1.0);

	float brightness = dot(finalColor, vec3(0.2126, 0.7152, 0.0722));
    if(brightness > 0.2)
        BrightColor = vec4(finalColor, 1.0);
    else
        BrightColor = vec4(0.0, 0.0, 0.0, 1.0);
}