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Make blur effect alpha-aware

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This commit is contained in:
Nikita Lisitsa 2022-02-26 14:33:26 +03:00
parent 3f758e845d
commit 50b75bdd27
1 changed files with 8 additions and 2 deletions
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10
libs/gfx/source/effect/blur.cpp
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@ -55,9 +55,15 @@ void main()
vec4 result = vec4(0.0); vec4 result = vec4(0.0);
for (int i = -BLUR_SIZE; i <= BLUR_SIZE; ++i) for (int i = -BLUR_SIZE; i <= BLUR_SIZE; ++i)
{ {
result += texture(u_texture, texcoord + float(i) * direction * u_inv_texture_size) * coeffs[i + BLUR_SIZE]; vec4 p = texture(u_texture, texcoord + float(i) * direction * u_inv_texture_size);
float c = coeffs[i + BLUR_SIZE];
result.rgb += p.rgb * p.a * c;
result.a += p.a * c;
} }
out_color = result; if (result.a == 0.0)
out_color = result;
else
out_color = vec4(result.rgb / result.a, result.a);
} }
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