mirror of
https://github.com/Ttanasart-pt/Pixel-Composer.git
synced 2024-09-21 21:01:20 +02:00
28 lines
584 B
GLSL
28 lines
584 B
GLSL
//
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// Simple passthrough fragment shader
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//
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varying vec2 v_vTexcoord;
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varying vec4 v_vColour;
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uniform float strength;
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uniform float direction;
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vec4 dirBlur(vec2 angle) {
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vec4 acc = vec4(0.);
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const float delta = 2.0 / 32.;
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for(float i = -1.0; i <= 1.0; i += delta) {
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vec4 col = texture2D( gm_BaseTexture, v_vTexcoord - vec2(angle.x * i, angle.y * i));
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acc += col;
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}
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acc.rgb *= 0.5;
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return acc * delta;
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}
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void main() {
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float r = radians(direction);
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vec2 dirr = vec2(sin(r), cos(r));
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gl_FragColor = dirBlur(strength * dirr);
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} |