42 lines
1.0 KiB
GLSL
42 lines
1.0 KiB
GLSL
// Input texture coordinate
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varying vec2 ove_texcoord;
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// Match with ShapeNode::Type
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#define SHAPE_RECTANGLE 0
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#define SHAPE_ELLIPSE 1
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uniform vec2 pos_in;
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uniform vec2 size_in;
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uniform int type_in;
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uniform vec2 resolution_in;
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uniform vec4 color_in;
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void main() {
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vec2 p = pos_in + resolution_in*0.5 - size_in*0.5;
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vec2 real_position = p/resolution_in;
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vec2 real_size = size_in/resolution_in;
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vec4 col = vec4(0.0);
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if (type_in == SHAPE_RECTANGLE) {
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if (ove_texcoord.x >= real_position.x && ove_texcoord.y >= real_position.y
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&& ove_texcoord.x < real_position.x+real_size.x && ove_texcoord.y < real_position.y+real_size.y) {
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col = color_in;
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}
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} else if (type_in == SHAPE_ELLIPSE) {
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vec2 center = p+size_in*0.5;
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float radius = size_in.y*0.5;
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float aspect_ratio = size_in.x/size_in.y;
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vec2 offset = ove_texcoord*resolution_in - center;
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offset.x /= aspect_ratio;
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float d = length(offset)-radius;
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float t = clamp(d, 0.0, 1.0);
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col = color_in * (1.0-t);
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}
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gl_FragColor = col;
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}
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