mirror of
https://github.com/curioustorvald/Terrarum.git
synced 2026-03-07 20:31:51 +09:00
moved essential resources out of the assets directory and into the jar
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39
src/shaders/loadingCircle.frag
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39
src/shaders/loadingCircle.frag
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#version 120
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#ifdef GL_ES
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precision mediump float;
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#endif
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varying vec4 v_color;
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varying vec2 v_texCoords;
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uniform sampler2D u_texture;
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uniform float rcount = 64.0;
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uniform float gcount = 64.0;
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uniform float bcount = 64.0;
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uniform float acount = 1.0;
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uniform vec2 circleCentrePoint;
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uniform vec2 colorCentrePoint;
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uniform float circleSize;
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void main() {
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vec2 screenCoord = gl_FragCoord.xy;
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float distToCircleCentre =
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(screenCoord.x - circleCentrePoint.x + 0.5) * (screenCoord.x - circleCentrePoint.x + 0.5) +
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(screenCoord.y - circleCentrePoint.y + 0.5) * (screenCoord.y - circleCentrePoint.y + 0.5);
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float circleSizeSqr = circleSize * circleSize / 4;
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if (distToCircleCentre <= circleSizeSqr) {
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gl_FragColor = vec4(0.993, 0.993, 0.993, 1.0);
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}
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else if (distToCircleCentre <= circleSizeSqr + 200) { // dunno why it's 200; 2000 makes 10px feather
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gl_FragColor = vec4(0.993, 0.993, 0.993, 1 - (distToCircleCentre - circleSizeSqr) / 200);
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}
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else {
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gl_FragColor = vec4(0,0,0,1);
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}
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}
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