Simon Schneegans
35 lines
1.2 KiB
GLSL
35 lines
1.2 KiB
GLSL
vec2 masks = getMasks();
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vec4 windowColor = texture2D(uTexture, cogl_tex_coord_in[0].st);
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// Shell.GLSLEffect uses straight alpha. So we have to convert from premultiplied.
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if (windowColor.a > 0) {
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windowColor.rgb /= windowColor.a;
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}
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// Dissolve window to effect color / transparency.
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cogl_color_out.rgb = mix(uColor, windowColor.rgb, 0.2 * masks.y + 0.8);
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cogl_color_out.a = windowColor.a * masks.y;
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vec2 scaledUV = (cogl_tex_coord_in[0].st - 0.5) * (1.0 + 0.1 * uProgress);
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scaledUV /= uScale;
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// Add molecule particles.
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vec2 uv = scaledUV + vec2(0, 0.1 * uTime);
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uv *= 0.010598 * vec2(0.5 * uSize.x, uSize.y);
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float particles = 0.2 * pow((simplex3D(vec3(uv, 0.0 * uTime))), 3.0);
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// Add more molecule particles.
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for (int i = 1; i <= 3; ++i) {
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vec2 uv = scaledUV * 0.12154 / pow(1.5, i) * uSize;
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float atoms = simplex3D(vec3(uv, 2.0 * uTime / i));
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particles += 0.5 * pow(0.2 * (1.0 / (1.0 - atoms) - 1.0), 2);
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}
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cogl_color_out.rgb += uColor * particles * masks.x;
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cogl_color_out.a += particles * masks.x;
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// These are pretty useful for understanding how this works.
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// cogl_color_out = vec4(masks, 0.0, 1.0);
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// cogl_color_out = vec4(vec3(masks.x), 1.0);
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// cogl_color_out = vec4(vec3(masks.y), 1.0);
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// cogl_color_out = vec4(vec3(particles), 1.0); |