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19 lines
688 B
Plaintext
19 lines
688 B
Plaintext
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// Authored by Variable (6 May 2022)
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shader_type canvas_item;
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render_mode unshaded;
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uniform sampler2D map_texture : filter_nearest; // The map texture
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// (begin DESCRIPTION)
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// The Red and Green values (0-255) of tool color will be treated as an x and y position
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// respectively instead of color components.
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// When you draw, color will be taken from the x-y position in the "Map Texture".
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// (end DESCRIPTION)
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void fragment(){
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vec4 col = texture(TEXTURE, UV);
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vec2 map_size = vec2(textureSize(map_texture, 0));
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vec2 lookup_uv = vec2(round(col.x * 255.0)/(map_size.x), round(col.y * 255.0)/(map_size.y));
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vec4 index_color = texture(map_texture, lookup_uv);
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COLOR = index_color;
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}
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