SH-469 GL_ARB_texture_multisample support

1 files changed, 38 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class1/effects/glowExtractMSF.glsl b/indra/newview/app_settings/shaders/class1/effects/glowExtractMSF.glsl
new file mode 100644
index 0000000000..c03a0c61bd
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/effects/glowExtractMSF.glsl
@@ -0,0 +1,38 @@
+/** 
+ * @file glowExtractF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+#version 120
+
+#extension GL_ARB_texture_rectangle : enable
+#extension GL_ARB_texture_multisample : enable
+
+uniform sampler2DMS diffuseMap;
+uniform float minLuminance;
+uniform float maxExtractAlpha;
+uniform vec3 lumWeights;
+uniform vec3 warmthWeights;
+uniform float warmthAmount;
+
+void main()
+{
+	ivec2 itc = ivec2(gl_TexCoord[0].xy);
+	vec4 fcol = vec4(0,0,0,0);
+
+	for (int i = 0; i < samples; i++)
+	{
+		vec4 col = texelFetch(diffuseMap, itc, i);	
+
+		/// CALCULATING LUMINANCE (Using NTSC lum weights)
+		/// http://en.wikipedia.org/wiki/Luma_%28video%29
+		float lum = smoothstep(minLuminance, minLuminance+1.0, dot(col.rgb, lumWeights ) );
+		float warmth = smoothstep(minLuminance, minLuminance+1.0, max(col.r * warmthWeights.r, max(col.g * warmthWeights.g, col.b * warmthWeights.b)) ); 
+	
+		fcol += vec4(col.rgb, max(col.a, mix(lum, warmth, warmthAmount) * maxExtractAlpha));
+	}
+
+	gl_FragColor = fcol/samples;
+}