From 502d05e1f4ca15c537d017265435dcb9fda5b075 Mon Sep 17 00:00:00 2001
From: hunterk <hunter_kaller@yahoo.com>
Date: Fri, 11 Jan 2019 14:26:38 -0600
Subject: [PATCH] add threshold parameter to kawase blur for use in blooms

---
 blurs/kawase/kawase0.slang | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/blurs/kawase/kawase0.slang b/blurs/kawase/kawase0.slang
index 4ffb8c7..b21785b 100644
--- a/blurs/kawase/kawase0.slang
+++ b/blurs/kawase/kawase0.slang
@@ -10,8 +10,11 @@ layout(push_constant) uniform Push
 	vec4 OriginalSize;
 	vec4 OutputSize;
 	uint FrameCount;
+   float bloom_threshold;
 } params;
 
+#pragma parameter bloom_threshold "Glow Threshold" 0.0 0.0 1.0 0.05
+
 layout(std140, set = 0, binding = 0) uniform UBO
 {
 	mat4 MVP;
@@ -47,7 +50,9 @@ vec4 reSample(float d, vec2 uv, sampler2D decal)
     return color;
 }
 
+#include "../../misc/colorspace-tools.h"
+
 void main()
 {
-   FragColor = reSample(0., vTexCoord, Source);
+   FragColor = vec4(YIQtoRGB(RGBtoYIQ(reSample(0., vTexCoord, Source).rgb) - vec3(params.bloom_threshold, 0.,0.)), 1.0);
 }
\ No newline at end of file