25 lines
616 B
Text
25 lines
616 B
Text
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shader_type canvas_item;
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uniform sampler2D u_normalmap;
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uniform sampler2D u_globalmap;
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uniform vec3 u_light_direction = vec3(0.5, -0.7, 0.2);
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vec3 unpack_normal(vec4 rgba) {
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return rgba.xzy * 2.0 - vec3(1.0);
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}
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void fragment() {
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vec3 albedo = texture(u_globalmap, UV).rgb;
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// Undo sRGB
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// TODO I don't know what is correct tbh, this didn't work well
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//albedo *= pow(albedo, vec3(0.4545));
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//albedo *= pow(albedo, vec3(1.0 / 0.4545));
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albedo = sqrt(albedo);
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vec3 normal = unpack_normal(texture(u_normalmap, UV));
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float g = max(-dot(u_light_direction, normal), 0.0);
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COLOR = vec4(albedo * g, 1.0);
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}
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