itsmattkc
b5b6ffa0a1
These could be reimplemented almost wholesale, however the code has been cleaned up and documented and the XML metadata has been updated to support international translations.
38 lines
1.0 KiB
GLSL
38 lines
1.0 KiB
GLSL
#version 110
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uniform vec2 ove_resolution;
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varying vec2 ove_texcoord;
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uniform int ove_iteration;
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uniform sampler2D tex_in;
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uniform float radius_in;
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uniform bool horiz_in;
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uniform bool vert_in;
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void main(void) {
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if (radius_in == 0.0
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|| (iteration == 0 && !horiz_in)
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|| (iteration == 1 && !vert_in)) {
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gl_FragColor = texture2D(image, ove_texcoord);
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return;
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}
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// We only sample on hard pixels, so we don't accept decimal radii
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float real_radius = ceil(radius);
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// Calculate the weight of each pixel based on the radius
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float divider = 1.0 / real_radius;
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vec4 composite = vec4(0.0);
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for (float i=-real_radius+0.5;i<=real_radius;i+=2.0) {
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vec2 pixel_coord = ove_texcoord;
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if (iteration == 0) {
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pixel_coord.x += i/ove_resolution.x;
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} else if (iteration == 1) {
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pixel_coord.y += i/ove_resolution.y;
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}
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composite += texture2D(image, pixel_coord) * divider;
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}
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gl_FragColor = composite;
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}
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