From 8ec39da3468f53af85d0cd4d4d9c54a72d6b8152 Mon Sep 17 00:00:00 2001
From: Dave Parks <davep@lindenlab.com>
Date: Fri, 29 Jul 2011 17:46:16 -0500
Subject: SH-2181 Fix for alpha flickering when basic shaders enabled (don't
 use glAlphaFunc when shaders are available).

Reviewed by Leslie
---
 indra/llrender/llglslshader.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'indra/llrender/llglslshader.cpp')

diff --git a/indra/llrender/llglslshader.cpp b/indra/llrender/llglslshader.cpp
index 80c93bb0d2..f51d83abe4 100644
--- a/indra/llrender/llglslshader.cpp
+++ b/indra/llrender/llglslshader.cpp
@@ -49,6 +49,7 @@ using std::make_pair;
 using std::string;
 
 GLhandleARB LLGLSLShader::sCurBoundShader = 0;
+LLGLSLShader* LLGLSLShader::sCurBoundShaderPtr = NULL;
 bool LLGLSLShader::sNoFixedFunction = false;
 
 //UI shader -- declared here so llui_libtest will link properly
@@ -63,7 +64,8 @@ BOOL shouldChange(const LLVector4& v1, const LLVector4& v2)
 LLShaderFeatures::LLShaderFeatures()
 : calculatesLighting(false), isShiny(false), isFullbright(false), hasWaterFog(false),
 hasTransport(false), hasSkinning(false), hasObjectSkinning(false), hasAtmospherics(false), isSpecular(false),
-hasGamma(false), hasLighting(false), calculatesAtmospherics(false), mIndexedTextureChannels(0), disableTextureIndex(false)
+hasGamma(false), hasLighting(false), calculatesAtmospherics(false), mIndexedTextureChannels(0), disableTextureIndex(false),
+hasAlphaMask(false)
 {
 }
 
@@ -386,6 +388,7 @@ void LLGLSLShader::bind()
 	{
 		glUseProgramObjectARB(mProgramObject);
 		sCurBoundShader = mProgramObject;
+		sCurBoundShaderPtr = this;
 		if (mUniformsDirty)
 		{
 			LLShaderMgr::instance()->updateShaderUniforms(this);
@@ -410,6 +413,7 @@ void LLGLSLShader::unbind()
 		}
 		glUseProgramObjectARB(0);
 		sCurBoundShader = 0;
+		sCurBoundShaderPtr = NULL;
 		stop_glerror();
 	}
 }
@@ -418,6 +422,7 @@ void LLGLSLShader::bindNoShader(void)
 {
 	glUseProgramObjectARB(0);
 	sCurBoundShader = 0;
+	sCurBoundShaderPtr = NULL;
 }
 
 S32 LLGLSLShader::enableTexture(S32 uniform, LLTexUnit::eTextureType mode)
@@ -979,3 +984,9 @@ void LLGLSLShader::vertexAttrib4fv(U32 index, GLfloat* v)
 		glVertexAttrib4fvARB(mAttribute[index], v);
 	}
 }
+
+void LLGLSLShader::setAlphaRange(F32 minimum, F32 maximum)
+{
+	uniform1f("minimum_alpha", minimum);
+	uniform1f("maximum_alpha", maximum);
+}
-- 
cgit v1.2.3