forked from AuroraMiddleware/gtk
900a4e4d31
Move the resources of each renderer to its subdirectory. We've previously done that for the ngl renderer, but it is better to be consistent and do it for all the renderers.
51 lines
1.3 KiB
GLSL
51 lines
1.3 KiB
GLSL
#version 420 core
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#include "clip.frag.glsl"
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layout(location = 0) in vec2 inPos;
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layout(location = 1) in flat vec2 inSize;
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layout(location = 2) in vec2 inTexCoord;
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layout(location = 3) in float inRadius;
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layout(set = 0, binding = 0) uniform sampler2D inTexture;
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layout(location = 0) out vec4 color;
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const int samples_x = 15; // must be odd
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const int samples_y = 15; // must be odd
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const int half_samples_x = samples_x / 2;
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const int half_samples_y = samples_y / 2;
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float Gaussian (float sigma, float x)
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{
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return exp ( - (x * x) / (2.0 * sigma * sigma));
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}
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vec4 blur_pixel (in vec2 uv)
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{
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float total = 0.0;
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vec4 ret = vec4 (0);
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float pixel_size_x = (1.0 / inSize.x);
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float pixel_size_y = (1.0 / inSize.y);
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for (int y = 0; y < samples_y; ++y)
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{
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float fy = Gaussian (inRadius, float(y) - float(half_samples_x));
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float offset_y = float(y - half_samples_y) * pixel_size_y;
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for (int x = 0; x < samples_x; ++x)
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{
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float fx = Gaussian (inRadius, float(x) - float(half_samples_x));
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float offset_x = float(x - half_samples_x) * pixel_size_x;
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total += fx * fy;
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ret += texture(inTexture, uv + vec2(offset_x, offset_y)) * fx * fy;
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}
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}
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return ret / total;
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}
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void main()
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{
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color = clip (inPos, blur_pixel (inTexCoord));
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}
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