32 lines
811 B
GLSL
32 lines
811 B
GLSL
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#ifdef __cplusplus
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#include <string>
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const std::string shader_overlay_blur_frag = R"("
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#version 300 es
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precision mediump float;
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out vec4 FragColor;
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in vec2 uv;
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in vec2 pos;
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uniform sampler2D tex;
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uniform ivec4 size;
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void main() {
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vec2 texelSize = 1.0 / vec2(float(size.x), float(size.y));
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vec4 result = vec4(0.0, 0.0, 0.0, 0.0);
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for (int x = -size.z; x <= size.z; ++x) {
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for (int y = -size.w; y <= size.w; ++y) {
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vec2 offset = (vec2(float(x), float(y)) * texelSize);
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result += texture(tex, uv + offset);
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}
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}
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vec4 blur_val = result / vec4((float(size.z) * 2.0) * (float(size.w) * 2.0));
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vec4 tex_val = texture(tex, uv);
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if (tex_val != vec4(0.0,0.0,0.0,0.0))
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FragColor = tex_val;
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else
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FragColor = blur_val;
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}
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")";
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#endif
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