57 lines
No EOL
2.2 KiB
GLSL
57 lines
No EOL
2.2 KiB
GLSL
#version 440
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layout(location = 0) in vec2 qt_TexCoord0;
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layout(location = 0) out vec4 fragColor;
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layout(binding = 1) uniform sampler2D source1; // Current wallpaper
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layout(binding = 2) uniform sampler2D source2; // Next wallpaper
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layout(std140, binding = 0) uniform buf {
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mat4 qt_Matrix;
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float qt_Opacity;
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float progress; // Transition progress (0.0 to 1.0)
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float direction; // 0=left, 1=right, 2=up, 3=down
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float smoothness; // Edge smoothness (0.01 to 0.5, default 0.05)
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} ubuf;
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void main() {
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vec2 uv = qt_TexCoord0;
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vec4 color1 = texture(source1, uv); // Current (old) wallpaper
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vec4 color2 = texture(source2, uv); // Next (new) wallpaper
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float edge = 0.0;
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float factor = 0.0;
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// Extend the progress range to account for smoothness
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// This ensures the transition completes fully at the edges
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float extendedProgress = ubuf.progress * (1.0 + 2.0 * ubuf.smoothness) - ubuf.smoothness;
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// Calculate edge position based on direction
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// As progress goes from 0 to 1, we reveal source2 (new wallpaper)
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if (ubuf.direction < 0.5) {
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// Swipe from right to left (new image enters from right)
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edge = 1.0 - extendedProgress;
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factor = smoothstep(edge - ubuf.smoothness, edge + ubuf.smoothness, uv.x);
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fragColor = mix(color1, color2, factor);
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}
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else if (ubuf.direction < 1.5) {
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// Swipe from left to right (new image enters from left)
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edge = extendedProgress;
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factor = smoothstep(edge - ubuf.smoothness, edge + ubuf.smoothness, uv.x);
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fragColor = mix(color2, color1, factor);
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}
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else if (ubuf.direction < 2.5) {
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// Swipe from bottom to top (new image enters from bottom)
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edge = 1.0 - extendedProgress;
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factor = smoothstep(edge - ubuf.smoothness, edge + ubuf.smoothness, uv.y);
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fragColor = mix(color1, color2, factor);
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}
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else {
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// Swipe from top to bottom (new image enters from top)
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edge = extendedProgress;
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factor = smoothstep(edge - ubuf.smoothness, edge + ubuf.smoothness, uv.y);
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fragColor = mix(color2, color1, factor);
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}
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fragColor *= ubuf.qt_Opacity;
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} |