SH-2181 Fix for alpha flickering when basic shaders enabled (don't use glAlphaFunc when shaders are available).

Reviewed by Leslie

1 files changed, 27 insertions, 0 deletions

diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskF.glsl
new file mode 100644
index 0000000000..7b3c20f092
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskF.glsl
@@ -0,0 +1,27 @@
+/** 
+ * @file lightWaterAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec3 atmosLighting(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void default_lighting_water()
+{
+	vec4 color = diffuseLookup(gl_TexCoord[0].xy) * gl_Color;
+
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = atmosLighting(color.rgb);
+
+	gl_FragColor = applyWaterFog(color);
+}
+