From d6567010bf1c65abcbe09b959cde63664778d923 Mon Sep 17 00:00:00 2001
From: Juan Linietsky <reduzio@gmail.com>
Date: Sat, 29 Oct 2016 20:48:09 -0300
Subject: -Many many fixes -Gizmos work again

---
 drivers/gles3/shaders/copy.glsl | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'drivers/gles3/shaders/copy.glsl')

diff --git a/drivers/gles3/shaders/copy.glsl b/drivers/gles3/shaders/copy.glsl
index eb58d66431..79982ecf25 100644
--- a/drivers/gles3/shaders/copy.glsl
+++ b/drivers/gles3/shaders/copy.glsl
@@ -5,9 +5,9 @@ layout(location=0) in highp vec4 vertex_attrib;
 #ifdef USE_CUBEMAP
 layout(location=4) in vec3 cube_in;
 #else
-layout(location=4) in vec2 uv_in; // attrib:4
+layout(location=4) in vec2 uv_in;
 #endif
-layout(location=5) in vec2 uv2_in; // attrib:5
+layout(location=5) in vec2 uv2_in;
 
 #ifdef USE_CUBEMAP
 out vec3 cube_interp;
@@ -40,6 +40,15 @@ uniform sampler2D source; //texunit:0
 #endif
 
 
+float sRGB_gamma_correct(float c){
+    float a = 0.055;
+    if(c < 0.0031308)
+	return 12.92*c;
+    else
+	return (1.0+a)*pow(c, 1.0/2.4) - a;
+}
+
+
 uniform float stuff;
 
 in vec2 uv2_interp;
@@ -57,6 +66,20 @@ void main() {
 	vec4 color = texture( source,  uv_interp );
 #endif
 
+#ifdef LINEAR_TO_SRGB
+	//regular Linear -> SRGB conversion
+	vec3 a = vec3(0.055);
+	color.rgb = mix( (vec3(1.0)+a)*pow(color.rgb,vec3(1.0/2.4))-a , 12.92*color.rgb , lessThan(color.rgb,vec3(0.0031308)));
+#endif
+
+#ifdef DEBUG_GRADIENT
+	color.rg=uv_interp;
+	color.b=0.0;
+#endif
+
+#ifdef DISABLE_ALPHA
+	color.a=1.0;
+#endif
 
 	frag_color = color;
 }
-- 
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