diff options
Diffstat (limited to 'source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl')
| -rw-r--r-- | source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl | 176 |
1 files changed, 88 insertions, 88 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl index 6ac379c3845..299cb2094c1 100644 --- a/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl +++ b/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl @@ -49,172 +49,172 @@ out vec4 FragColor; vec3 safe_color(vec3 c) { - /* Clamp to avoid black square artifacts if a pixel goes NaN. */ - return clamp(c, vec3(0.0), vec3(1e20)); /* 1e20 arbitrary. */ + /* Clamp to avoid black square artifacts if a pixel goes NaN. */ + return clamp(c, vec3(0.0), vec3(1e20)); /* 1e20 arbitrary. */ } float brightness(vec3 c) { - return max(max(c.r, c.g), c.b); + return max(max(c.r, c.g), c.b); } /* 3-tap median filter */ vec3 median(vec3 a, vec3 b, vec3 c) { - return a + b + c - min(min(a, b), c) - max(max(a, b), c); + return a + b + c - min(min(a, b), c) - max(max(a, b), c); } /* ------------- Filters ------------ */ vec3 downsample_filter_high(sampler2D tex, vec2 uv, vec2 texelSize) { - /* Downsample with a 4x4 box filter + anti-flicker filter */ - vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); - - vec3 s1 = textureLod(tex, uv + d.xy, 0.0).rgb; - vec3 s2 = textureLod(tex, uv + d.zy, 0.0).rgb; - vec3 s3 = textureLod(tex, uv + d.xw, 0.0).rgb; - vec3 s4 = textureLod(tex, uv + d.zw, 0.0).rgb; - - /* Karis's luma weighted average (using brightness instead of luma) */ - float s1w = 1.0 / (brightness(s1) + 1.0); - float s2w = 1.0 / (brightness(s2) + 1.0); - float s3w = 1.0 / (brightness(s3) + 1.0); - float s4w = 1.0 / (brightness(s4) + 1.0); - float one_div_wsum = 1.0 / (s1w + s2w + s3w + s4w); - - return (s1 * s1w + s2 * s2w + s3 * s3w + s4 * s4w) * one_div_wsum; + /* Downsample with a 4x4 box filter + anti-flicker filter */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); + + vec3 s1 = textureLod(tex, uv + d.xy, 0.0).rgb; + vec3 s2 = textureLod(tex, uv + d.zy, 0.0).rgb; + vec3 s3 = textureLod(tex, uv + d.xw, 0.0).rgb; + vec3 s4 = textureLod(tex, uv + d.zw, 0.0).rgb; + + /* Karis's luma weighted average (using brightness instead of luma) */ + float s1w = 1.0 / (brightness(s1) + 1.0); + float s2w = 1.0 / (brightness(s2) + 1.0); + float s3w = 1.0 / (brightness(s3) + 1.0); + float s4w = 1.0 / (brightness(s4) + 1.0); + float one_div_wsum = 1.0 / (s1w + s2w + s3w + s4w); + + return (s1 * s1w + s2 * s2w + s3 * s3w + s4 * s4w) * one_div_wsum; } vec3 downsample_filter(sampler2D tex, vec2 uv, vec2 texelSize) { - /* Downsample with a 4x4 box filter */ - vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); + /* Downsample with a 4x4 box filter */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); - vec3 s; - s = textureLod(tex, uv + d.xy, 0.0).rgb; - s += textureLod(tex, uv + d.zy, 0.0).rgb; - s += textureLod(tex, uv + d.xw, 0.0).rgb; - s += textureLod(tex, uv + d.zw, 0.0).rgb; + vec3 s; + s = textureLod(tex, uv + d.xy, 0.0).rgb; + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.xw, 0.0).rgb; + s += textureLod(tex, uv + d.zw, 0.0).rgb; - return s * (1.0 / 4); + return s * (1.0 / 4); } vec3 upsample_filter_high(sampler2D tex, vec2 uv, vec2 texelSize) { - /* 9-tap bilinear upsampler (tent filter) */ - vec4 d = texelSize.xyxy * vec4(1, 1, -1, 0) * sampleScale; + /* 9-tap bilinear upsampler (tent filter) */ + vec4 d = texelSize.xyxy * vec4(1, 1, -1, 0) * sampleScale; - vec3 s; - s = textureLod(tex, uv - d.xy, 0.0).rgb; - s += textureLod(tex, uv - d.wy, 0.0).rgb * 2; - s += textureLod(tex, uv - d.zy, 0.0).rgb; + vec3 s; + s = textureLod(tex, uv - d.xy, 0.0).rgb; + s += textureLod(tex, uv - d.wy, 0.0).rgb * 2; + s += textureLod(tex, uv - d.zy, 0.0).rgb; - s += textureLod(tex, uv + d.zw, 0.0).rgb * 2; - s += textureLod(tex, uv , 0.0).rgb * 4; - s += textureLod(tex, uv + d.xw, 0.0).rgb * 2; + s += textureLod(tex, uv + d.zw, 0.0).rgb * 2; + s += textureLod(tex, uv, 0.0).rgb * 4; + s += textureLod(tex, uv + d.xw, 0.0).rgb * 2; - s += textureLod(tex, uv + d.zy, 0.0).rgb; - s += textureLod(tex, uv + d.wy, 0.0).rgb * 2; - s += textureLod(tex, uv + d.xy, 0.0).rgb; + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.wy, 0.0).rgb * 2; + s += textureLod(tex, uv + d.xy, 0.0).rgb; - return s * (1.0 / 16.0); + return s * (1.0 / 16.0); } vec3 upsample_filter(sampler2D tex, vec2 uv, vec2 texelSize) { - /* 4-tap bilinear upsampler */ - vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1) * (sampleScale * 0.5); + /* 4-tap bilinear upsampler */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1) * (sampleScale * 0.5); - vec3 s; - s = textureLod(tex, uv + d.xy, 0.0).rgb; - s += textureLod(tex, uv + d.zy, 0.0).rgb; - s += textureLod(tex, uv + d.xw, 0.0).rgb; - s += textureLod(tex, uv + d.zw, 0.0).rgb; + vec3 s; + s = textureLod(tex, uv + d.xy, 0.0).rgb; + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.xw, 0.0).rgb; + s += textureLod(tex, uv + d.zw, 0.0).rgb; - return s * (1.0 / 4.0); + return s * (1.0 / 4.0); } /* ----------- Steps ----------- */ vec4 step_blit(void) { - vec2 uv = uvcoordsvar.xy + sourceBufferTexelSize.xy * 0.5; + vec2 uv = uvcoordsvar.xy + sourceBufferTexelSize.xy * 0.5; #ifdef HIGH_QUALITY /* Anti flicker */ - vec3 d = sourceBufferTexelSize.xyx * vec3(1, 1, 0); - vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); - vec3 s1 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.xz, 0.0).rgb); - vec3 s2 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.xz, 0.0).rgb); - vec3 s3 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.zy, 0.0).rgb); - vec3 s4 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.zy, 0.0).rgb); - vec3 m = median(median(s0.rgb, s1, s2), s3, s4); + vec3 d = sourceBufferTexelSize.xyx * vec3(1, 1, 0); + vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); + vec3 s1 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.xz, 0.0).rgb); + vec3 s2 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.xz, 0.0).rgb); + vec3 s3 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.zy, 0.0).rgb); + vec3 s4 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.zy, 0.0).rgb); + vec3 m = median(median(s0.rgb, s1, s2), s3, s4); #else - vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); - vec3 m = s0.rgb; + vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); + vec3 m = s0.rgb; #endif - /* Pixel brightness */ - float br = brightness(m); + /* Pixel brightness */ + float br = brightness(m); - /* Under-threshold part: quadratic curve */ - float rq = clamp(br - curveThreshold.x, 0, curveThreshold.y); - rq = curveThreshold.z * rq * rq; + /* Under-threshold part: quadratic curve */ + float rq = clamp(br - curveThreshold.x, 0, curveThreshold.y); + rq = curveThreshold.z * rq * rq; - /* Combine and apply the brightness response curve. */ - m *= max(rq, br - curveThreshold.w) / max(1e-5, br); + /* Combine and apply the brightness response curve. */ + m *= max(rq, br - curveThreshold.w) / max(1e-5, br); - /* Clamp pixel intensity if clamping enabled */ - if (clampIntensity > 0.0) { - br = max(1e-5, brightness(m)); - m *= 1.0 - max(0.0, br - clampIntensity) / br; - } + /* Clamp pixel intensity if clamping enabled */ + if (clampIntensity > 0.0) { + br = max(1e-5, brightness(m)); + m *= 1.0 - max(0.0, br - clampIntensity) / br; + } - return vec4(m, 1.0); + return vec4(m, 1.0); } vec4 step_downsample(void) { #ifdef HIGH_QUALITY /* Anti flicker */ - vec3 sample = downsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 sample = downsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #else - vec3 sample = downsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 sample = downsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #endif - return vec4(sample, 1.0); + return vec4(sample, 1.0); } vec4 step_upsample(void) { #ifdef HIGH_QUALITY - vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #else - vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #endif - vec3 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0).rgb; - return vec4(base + blur, 1.0); + vec3 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0).rgb; + return vec4(base + blur, 1.0); } vec4 step_resolve(void) { #ifdef HIGH_QUALITY - vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #else - vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); + vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); #endif - vec4 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0); - vec3 cout = base.rgb + blur * bloomColor; - return vec4(cout, base.a); + vec4 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0); + vec3 cout = base.rgb + blur * bloomColor; + return vec4(cout, base.a); } void main(void) { #if defined(STEP_BLIT) - FragColor = step_blit(); + FragColor = step_blit(); #elif defined(STEP_DOWNSAMPLE) - FragColor = step_downsample(); + FragColor = step_downsample(); #elif defined(STEP_UPSAMPLE) - FragColor = step_upsample(); + FragColor = step_upsample(); #elif defined(STEP_RESOLVE) - FragColor = step_resolve(); + FragColor = step_resolve(); #endif } |