39 lines
848 B
GLSL
39 lines
848 B
GLSL
#version 430 core
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in Fragment
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{
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// @Performance: Are this fields aligned to vec4? Is it better to reorder them?
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vec2 position;
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vec4 color;
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vec2 uv;
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} frag;
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uniform int width; // Width of the screen in pixels
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uniform int height; // Height of the screen in pixels
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uniform int has_texture0;
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uniform sampler2D texture0;
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uniform int texture_channels0;
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uniform vec4 color0;
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out vec4 FragColor;
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void main()
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{
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FragColor = frag.color;
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if(has_texture0 != 0)
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{
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vec4 texture_color;
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if(texture_channels0 == 1)
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texture_color = vec4(1.0, 1.0, 1.0, texture(texture0, frag.uv).r);
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else if(texture_channels0 == 3)
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texture_color = vec4(texture(texture0, frag.uv).rgb, 1.0);
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else
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texture_color = texture(texture0, frag.uv);
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FragColor = color0 * frag.color * texture_color;
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FragColor.rgb *= FragColor.a; // Premultiplied alpha
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}
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}
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