31 lines
1.3 KiB
Plaintext
31 lines
1.3 KiB
Plaintext
shader_type canvas_item;
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uniform sampler2D t0 : hint_screen_texture;
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uniform float bloom_spread = 1;
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uniform float bloom_intensity = 2;
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void fragment() {
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ivec2 size = textureSize(t0, 0);
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float uv_x = SCREEN_UV.x * float(size.x);
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float uv_y = SCREEN_UV.y * float(size.y);
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vec4 sum = vec4(0.0);
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for (int n = 0; n < 9; ++n) {
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uv_y = (SCREEN_UV.y * float(size.y)) + float(bloom_spread * float(n - 4));
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vec4 h_sum = vec4(0.0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) - int(4.0 * bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) - int(3.0 * bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) - int(2.0 * bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) - int(bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) + int(bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) + int(2.0 * bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) + int(3.0 * bloom_spread), int(uv_y)), 0);
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h_sum += texelFetch(t0, ivec2(int(uv_x) + int(4.0 * bloom_spread), int(uv_y)), 0);
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sum += h_sum / 9.0;
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}
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COLOR = texture(t0, SCREEN_UV) + ((sum / 9.0) * bloom_intensity);
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}
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