1 files changed, 67 insertions, 11 deletions

diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 1d82dda30f..edcc47aa14 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -46,6 +46,7 @@ S32	gGLViewport[4];
 
 U32 LLRender::sUICalls = 0;
 U32 LLRender::sUIVerts = 0;
+U32 LLTexUnit::sWhiteTexture = 0;
 
 static const U32 LL_NUM_TEXTURE_LAYERS = 32; 
 static const U32 LL_NUM_LIGHT_UNITS = 8;
@@ -126,7 +127,8 @@ void LLTexUnit::refreshState(void)
 	// Per apple spec, don't call glEnable/glDisable when index exceeds max texture units
 	// http://www.mailinglistarchive.com/html/mac-opengl@lists.apple.com/2008-07/msg00653.html
 	//
-	bool enableDisable = (mIndex < gGLManager.mNumTextureUnits) && mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE;
+	bool enableDisable = !LLGLSLShader::sNoFixedFunction && 
+		(mIndex < gGLManager.mNumTextureUnits) && mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE;
 		
 	if (mCurrTexType != TT_NONE)
 	{
@@ -184,7 +186,8 @@ void LLTexUnit::enable(eTextureType type)
 		mCurrTexType = type;
 
 		gGL.flush();
-		if (type != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
+		if (!LLGLSLShader::sNoFixedFunction && 
+			type != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
 			mIndex < gGLManager.mNumTextureUnits)
 		{
 			glEnable(sGLTextureType[type]);
@@ -201,7 +204,8 @@ void LLTexUnit::disable(void)
 		activate();
 		unbind(mCurrTexType);
 		gGL.flush();
-		if (mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
+		if (!LLGLSLShader::sNoFixedFunction &&
+			mCurrTexType != LLTexUnit::TT_MULTISAMPLE_TEXTURE &&
 			mIndex < gGLManager.mNumTextureUnits)
 		{
 			glDisable(sGLTextureType[mCurrTexType]);
@@ -403,7 +407,14 @@ void LLTexUnit::unbind(eTextureType type)
 
 		activate();
 		mCurrTexture = 0;
-		glBindTexture(sGLTextureType[type], 0);
+		if (LLGLSLShader::sNoFixedFunction && type == LLTexUnit::TT_TEXTURE)
+		{
+			glBindTexture(sGLTextureType[type], sWhiteTexture);
+		}
+		else
+		{
+			glBindTexture(sGLTextureType[type], 0);
+		}
 		stop_glerror();
 	}
 }
@@ -474,6 +485,11 @@ void LLTexUnit::setTextureFilteringOption(LLTexUnit::eTextureFilterOptions optio
 
 void LLTexUnit::setTextureBlendType(eTextureBlendType type)
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //texture blend type means nothing when using shaders
+		return;
+	}
+
 	if (mIndex < 0) return;
 
 	// Do nothing if it's already correctly set.
@@ -594,6 +610,11 @@ GLint LLTexUnit::getTextureSourceType(eTextureBlendSrc src, bool isAlpha)
 
 void LLTexUnit::setTextureCombiner(eTextureBlendOp op, eTextureBlendSrc src1, eTextureBlendSrc src2, bool isAlpha)
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //register combiners do nothing when not using fixed function
+		return;
+	}	
+
 	if (mIndex < 0) return;
 
 	activate();
@@ -906,13 +927,7 @@ LLRender::LLRender()
     mMode(LLRender::TRIANGLES),
     mCurrTextureUnitIndex(0),
     mMaxAnisotropy(0.f) 
-{
-	mBuffer = new LLVertexBuffer(immediate_mask, 0);
-	mBuffer->allocateBuffer(4096, 0, TRUE);
-	mBuffer->getVertexStrider(mVerticesp);
-	mBuffer->getTexCoord0Strider(mTexcoordsp);
-	mBuffer->getColorStrider(mColorsp);
-	
+{	
 	mTexUnits.reserve(LL_NUM_TEXTURE_LAYERS);
 	for (U32 i = 0; i < LL_NUM_TEXTURE_LAYERS; i++)
 	{
@@ -943,6 +958,17 @@ LLRender::~LLRender()
 	shutdown();
 }
 
+void LLRender::init()
+{
+	llassert_always(mBuffer.isNull()) ;
+
+	mBuffer = new LLVertexBuffer(immediate_mask, 0);
+	mBuffer->allocateBuffer(4096, 0, TRUE);
+	mBuffer->getVertexStrider(mVerticesp);
+	mBuffer->getTexCoord0Strider(mTexcoordsp);
+	mBuffer->getColorStrider(mColorsp);
+}
+
 void LLRender::shutdown()
 {
 	for (U32 i = 0; i < mTexUnits.size(); i++)
@@ -958,6 +984,7 @@ void LLRender::shutdown()
 		delete mLightState[i];
 	}
 	mLightState.clear();
+	mBuffer = NULL ;
 }
 
 void LLRender::refreshState(void)
@@ -1147,6 +1174,11 @@ void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
 {
 	flush();
 
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //glAlphaFunc is deprecated in OpenGL 3.3
+		return;
+	}
+
 	if (mCurrAlphaFunc != func ||
 		mCurrAlphaFuncVal != value)
 	{
@@ -1161,6 +1193,30 @@ void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
 			glAlphaFunc(sGLCompareFunc[func], value);
 		}
 	}
+
+	if (gDebugGL)
+	{ //make sure cached state is correct
+		GLint cur_func = 0;
+		glGetIntegerv(GL_ALPHA_TEST_FUNC, &cur_func);
+
+		if (func == CF_DEFAULT)
+		{
+			func = CF_GREATER;
+		}
+
+		if (cur_func != sGLCompareFunc[func])
+		{
+			llerrs << "Alpha test function corrupted!" << llendl;
+		}
+
+		F32 ref = 0.f;
+		glGetFloatv(GL_ALPHA_TEST_REF, &ref);
+
+		if (ref != value)
+		{
+			llerrs << "Alpha test value corrupted!" << llendl;
+		}
+	}
 }
 
 void LLRender::blendFunc(eBlendFactor sfactor, eBlendFactor dfactor)