1 files changed, 55 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/MPHDRDisplayGammaF.glsl b/indra/newview/app_settings/shaders/class1/deferred/MPHDRDisplayGammaF.glsl
new file mode 100644
index 0000000000..7107cfcbce
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/MPHDRDisplayGammaF.glsl
@@ -0,0 +1,55 @@
+/**
+ * @file postDeferredGammaCorrect.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+/*[EXTRA_CODE_HERE]*/
+
+out vec4 frag_color;
+
+uniform sampler2D diffuseRect;
+
+uniform float gamma = 2.2;
+uniform float mpHDRBoost;
+
+in vec2 vary_fragcoord;
+
+vec3 clampHDRRange(vec3 color);
+
+vec3 HDRDisplayGamma(vec3 linearRGB)
+{
+    bvec3 cutoff = lessThan(linearRGB, vec3(0.0031308));
+    vec3 higher = vec3(1.055)*pow(linearRGB, vec3(1.0/gamma)) - vec3(0.055);
+    vec3 lower = linearRGB * vec3(12.92);
+
+    return mix(higher, lower, cutoff);
+}
+
+void main()
+{
+    vec4 diff = texture(diffuseRect, vary_fragcoord);
+    diff.rgb = mpHDRBoost * HDRDisplayGamma(diff.rgb);
+    diff.rgb = clampHDRRange(diff.rgb);
+    frag_color = diff;
+}
+