86 lines
2.8 KiB
GLSL
86 lines
2.8 KiB
GLSL
uniform float opacity; // painter opacity
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uniform vec4 color; // painter color
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uniform float time; // time in seconds since shader linkage
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uniform sampler2D texture; // map texture
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varying vec2 textureCoords; // map texture coords
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//uniform vec4 awareArea;
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void main()
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{
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gl_FragColor = texture2D(texture, textureCoords);
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}
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/*
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vec4 grayScale(vec4 color, float factor)
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{
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float gray = dot(color.rgb, vec3(0.299, 0.587, 0.114));
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return vec4(gray*factor + (1-factor)*color.r,
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gray*factor + (1-factor)*color.g,
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gray*factor + (1-factor)*color.b, 1);
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}
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// grayscale fog
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void main()
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{
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vec4 color = texture2D(texture, textureCoords);
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float dist = 0;
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// left
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if(textureCoords.x < awareArea.x && textureCoords.y < awareArea.y)
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dist = distance(textureCoords, awareArea.xy);
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else if(textureCoords.x < awareArea.x && textureCoords.y < awareArea.w)
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dist = distance(textureCoords, vec2(awareArea.x, textureCoords.y));
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else if(textureCoords.x < awareArea.x)
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dist = distance(textureCoords, awareArea.xw);
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// right
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else if(textureCoords.x > awareArea.z && textureCoords.y < awareArea.y)
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dist = distance(textureCoords, awareArea.zy);
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else if(textureCoords.x > awareArea.z && textureCoords.y < awareArea.w)
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dist = distance(textureCoords, vec2(awareArea.z, textureCoords.y));
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else if(textureCoords.x > awareArea.z)
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dist = distance(textureCoords, awareArea.zw);
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// top
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else if(textureCoords.y < awareArea.y)
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dist = distance(textureCoords, vec2(textureCoords.x, awareArea.y));
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// bottom
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else if(textureCoords.y > awareArea.w)
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dist = distance(textureCoords, vec2(textureCoords.x, awareArea.w));
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if(dist > 0) {
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float range = 0.01;
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float factor = min(dist/range, 1.0);
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color = grayScale(color, factor);
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//color.rgb *= 1 - (factor * 0.5);
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}
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gl_FragColor = color;
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}
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*/
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/*
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sepia
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void main()
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{
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vec4 color = texture2D(texture, textureCoords);
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if(textureCoords.x < awareArea.x || textureCoords.y < awareArea.y || textureCoords.x > awareArea.z || textureCoords.y > awareArea.w) {
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gl_FragColor.r = dot(color, vec4(.393, .769, .189, .0));
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gl_FragColor.g = dot(color, vec4(.349, .686, .168, .0));
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gl_FragColor.b = dot(color, vec4(.272, .534, .131, .0));
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gl_FragColor.a = 1;
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} else
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gl_FragColor = color;
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}
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*/
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/*
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void main()
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{
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vec4 color = texture2D(texture, textureCoords);
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vec2 awareRange = (awareArea.zw - awareArea.xy)/2.0;
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float dist = distance(textureCoords, awareArea.xy + awareRange);
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float start = min(awareRange.x, awareRange.y);
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float range = awareRange*0.1;
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float endFactor = 0.3;
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if(dist >= start) {
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color.rgb *= 1 - (min((dist - start)/range, 1.0) * (2.0 - endFactor));
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}
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gl_FragColor = color;
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}
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*/ |