luboslenco
38 lines
1.1 KiB
GLSL
38 lines
1.1 KiB
GLSL
#version 450
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uniform sampler2D tex;
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uniform vec2 screenSizeInv;
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uniform int currentMipLevel;
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uniform float sampleScale;
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in vec2 texCoord;
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out vec4 fragColor;
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const float bloomStrength = 0.02;
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vec3 upsample_dual_filter(const sampler2D tex, const vec2 texCoord, const vec2 texelSize) {
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vec2 delta = texelSize * sampleScale;
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vec3 result;
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result = textureLod(tex, texCoord + vec2(-delta.x * 2.0, 0.0), 0.0).rgb;
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result += textureLod(tex, texCoord + vec2(-delta.x, delta.y), 0.0).rgb * 2.0;
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result += textureLod(tex, texCoord + vec2(0.0, delta.y * 2.0), 0.0).rgb;
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result += textureLod(tex, texCoord + delta, 0.0).rgb * 2.0;
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result += textureLod(tex, texCoord + vec2(delta.x * 2.0, 0.0), 0.0).rgb;
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result += textureLod(tex, texCoord + vec2(delta.x, -delta.y), 0.0).rgb * 2.0;
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result += textureLod(tex, texCoord + vec2(0.0, -delta.y * 2.0), 0.0).rgb;
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result += textureLod(tex, texCoord - delta, 0.0).rgb * 2.0;
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return result * (1.0 / 12.0);
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}
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void main() {
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fragColor.rgb = upsample_dual_filter(tex, texCoord, screenSizeInv);
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if (currentMipLevel == 0) {
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fragColor.rgb *= bloomStrength;
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}
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fragColor.a = 1.0;
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}
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