1 files changed, 118 insertions, 110 deletions

diff --git a/indra/newview/llvosky.cpp b/indra/newview/llvosky.cpp
index 7ae8c2c07d..4dab213fa0 100644..100755
--- a/indra/newview/llvosky.cpp
+++ b/indra/newview/llvosky.cpp
@@ -28,11 +28,9 @@
 
 #include "llvosky.h"
 
-#include "imageids.h"
 #include "llfeaturemanager.h"
 #include "llviewercontrol.h"
 #include "llframetimer.h"
-#include "timing.h"
 
 #include "llagent.h"
 #include "llagentcamera.h"
@@ -64,8 +62,6 @@ static const S32 NUM_TILES = NUM_TILES_X * NUM_TILES_Y;
 static const F32 SUN_DISK_RADIUS	= 0.5f;
 static const F32 MOON_DISK_RADIUS	= SUN_DISK_RADIUS * 0.9f;
 static const F32 SUN_INTENSITY = 1e5;
-static const F32 SUN_DISK_INTENSITY = 24.f;
-
 
 // Texture coordinates:
 static const LLVector2 TEX00 = LLVector2(0.f, 0.f);
@@ -77,9 +73,6 @@ static const LLVector2 TEX11 = LLVector2(1.f, 1.f);
 LLUUID gSunTextureID = IMG_SUN;
 LLUUID gMoonTextureID = IMG_MOON;
 
-//static 
-LLColor3 LLHaze::sAirScaSeaLevel;
-
 class LLFastLn
 {
 public:
@@ -182,6 +175,23 @@ inline void color_gamma_correct(LLColor3 &col)
 	}
 }
 
+static LLColor3 calc_air_sca_sea_level()
+{
+	static LLColor3 WAVE_LEN(675, 520, 445);
+	static LLColor3 refr_ind = refr_ind_calc(WAVE_LEN);
+	static LLColor3 n21 = refr_ind * refr_ind - LLColor3(1, 1, 1);
+	static LLColor3 n4 = n21 * n21;
+	static LLColor3 wl2 = WAVE_LEN * WAVE_LEN * 1e-6f;
+	static LLColor3 wl4 = wl2 * wl2;
+	static LLColor3 mult_const = fsigma * 2.0f/ 3.0f * 1e24f * (F_PI * F_PI) * n4;
+	static F32 dens_div_N = F32( ATM_SEA_LEVEL_NDENS / Ndens2);
+	return dens_div_N * color_div ( mult_const, wl4 );
+}
+
+// static constants.
+LLColor3 const LLHaze::sAirScaSeaLevel = calc_air_sca_sea_level();
+F32 const LLHaze::sAirScaIntense = color_intens(LLHaze::sAirScaSeaLevel);	
+F32 const LLHaze::sAirScaAvg = LLHaze::sAirScaIntense / 3.f;
 
 
 /***************************************
@@ -284,13 +294,13 @@ void LLSkyTex::create(const F32 brightness)
 
 void LLSkyTex::createGLImage(S32 which)
 {	
-	mTexture[which]->createGLTexture(0, mImageRaw[which], 0, TRUE, LLViewerTexture::LOCAL);
+	mTexture[which]->createGLTexture(0, mImageRaw[which], 0, TRUE, LLGLTexture::LOCAL);
 	mTexture[which]->setAddressMode(LLTexUnit::TAM_CLAMP);
 }
 
 void LLSkyTex::bindTexture(BOOL curr)
 {
-	gGL.getTexUnit(0)->bind(mTexture[getWhich(curr)]);
+	gGL.getTexUnit(0)->bind(mTexture[getWhich(curr)], true);
 }
 
 /***************************************
@@ -328,7 +338,7 @@ LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
 	blue_density = LLColor3();
 	blue_horizon = LLColor3();
 	haze_density = 0.f;
-	haze_horizon = LLColor3();
+	haze_horizon = 1.f;
 	density_multiplier = 0.f;
 	max_y = 0.f;
 	glow = LLColor3();
@@ -356,7 +366,7 @@ LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
 	mAtmHeight = ATM_HEIGHT;
 	mEarthCenter = LLVector3(mCameraPosAgent.mV[0], mCameraPosAgent.mV[1], -EARTH_RADIUS);
 
-	mSunDefaultPosition = LLVector3(LLWLParamManager::instance()->mCurParams.getVector("lightnorm", error));
+	mSunDefaultPosition = LLVector3(LLWLParamManager::getInstance()->mCurParams.getVector("lightnorm", error));
 	if (gSavedSettings.getBOOL("SkyOverrideSimSunPosition"))
 	{
 		initSunDirection(mSunDefaultPosition, LLVector3(0, 0, 0));
@@ -370,9 +380,9 @@ LLVOSky::LLVOSky(const LLUUID &id, const LLPCode pcode, LLViewerRegion *regionp)
 	mSun.setIntensity(SUN_INTENSITY);
 	mMoon.setIntensity(0.1f * SUN_INTENSITY);
 
-	mSunTexturep = LLViewerTextureManager::getFetchedTexture(gSunTextureID, TRUE, LLViewerTexture::BOOST_UI);
+	mSunTexturep = LLViewerTextureManager::getFetchedTexture(gSunTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
 	mSunTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
-	mMoonTexturep = LLViewerTextureManager::getFetchedTexture(gMoonTextureID, TRUE, LLViewerTexture::BOOST_UI);
+	mMoonTexturep = LLViewerTextureManager::getFetchedTexture(gMoonTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
 	mMoonTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
 	mBloomTexturep = LLViewerTextureManager::getFetchedTexture(IMG_BLOOM1);
 	mBloomTexturep->setNoDelete() ;
@@ -394,12 +404,6 @@ LLVOSky::~LLVOSky()
 	mCubeMap = NULL;
 }
 
-void LLVOSky::initClass()
-{
-	LLHaze::initClass();
-}
-
-
 void LLVOSky::init()
 {
    	const F32 haze_int = color_intens(mHaze.calcSigSca(0));
@@ -470,9 +474,9 @@ void LLVOSky::restoreGL()
 	{
 		mSkyTex[i].restoreGL();
 	}
-	mSunTexturep = LLViewerTextureManager::getFetchedTexture(gSunTextureID, TRUE, LLViewerTexture::BOOST_UI);
+	mSunTexturep = LLViewerTextureManager::getFetchedTexture(gSunTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
 	mSunTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
-	mMoonTexturep = LLViewerTextureManager::getFetchedTexture(gMoonTextureID, TRUE, LLViewerTexture::BOOST_UI);
+	mMoonTexturep = LLViewerTextureManager::getFetchedTexture(gMoonTextureID, FTT_DEFAULT, TRUE, LLGLTexture::BOOST_UI);
 	mMoonTexturep->setAddressMode(LLTexUnit::TAM_CLAMP);
 	mBloomTexturep = LLViewerTextureManager::getFetchedTexture(IMG_BLOOM1);
 	mBloomTexturep->setNoDelete() ;
@@ -613,21 +617,6 @@ static inline LLColor3 colorMix(LLColor3 const & left, LLColor3 const & right, F
 	return (left + ((right - left) * amount));
 }
 
-static inline F32 texture2D(LLPointer<LLImageRaw> const & tex, LLVector2 const & uv)
-{
-	U16 w = tex->getWidth();
-	U16 h = tex->getHeight();
-
-	U16 r = U16(uv[0] * w) % w;
-	U16 c = U16(uv[1] * h) % h;
-
-	U8 const * imageBuffer = tex->getData();
-
-	U8 sample = imageBuffer[r * w + c];
-
-	return sample / 255.f;
-}
-
 static inline LLColor3 smear(F32 val)
 {
 	return LLColor3(val, val, val);
@@ -638,24 +627,24 @@ void LLVOSky::initAtmospherics(void)
 	bool error;
 	
 	// uniform parameters for convenience
-	dome_radius = LLWLParamManager::instance()->getDomeRadius();
-	dome_offset_ratio = LLWLParamManager::instance()->getDomeOffset();
-	sunlight_color = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("sunlight_color", error));
-	ambient = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("ambient", error));
-	//lightnorm = LLWLParamManager::instance()->mCurParams.getVector("lightnorm", error);
-	gamma = LLWLParamManager::instance()->mCurParams.getVector("gamma", error)[0];
-	blue_density = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("blue_density", error));
-	blue_horizon = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("blue_horizon", error));
-	haze_density = LLWLParamManager::instance()->mCurParams.getVector("haze_density", error)[0];
-	haze_horizon = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("haze_horizon", error));
-	density_multiplier = LLWLParamManager::instance()->mCurParams.getVector("density_multiplier", error)[0];
-	max_y = LLWLParamManager::instance()->mCurParams.getVector("max_y", error)[0];
-	glow = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("glow", error));
-	cloud_shadow = LLWLParamManager::instance()->mCurParams.getVector("cloud_shadow", error)[0];
-	cloud_color = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("cloud_color", error));
-	cloud_scale = LLWLParamManager::instance()->mCurParams.getVector("cloud_scale", error)[0];
-	cloud_pos_density1 = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("cloud_pos_density1", error));
-	cloud_pos_density2 = LLColor3(LLWLParamManager::instance()->mCurParams.getVector("cloud_pos_density2", error));
+	dome_radius = LLWLParamManager::getInstance()->getDomeRadius();
+	dome_offset_ratio = LLWLParamManager::getInstance()->getDomeOffset();
+	sunlight_color = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("sunlight_color", error));
+	ambient = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("ambient", error));
+	//lightnorm = LLWLParamManager::getInstance()->mCurParams.getVector("lightnorm", error);
+	gamma = LLWLParamManager::getInstance()->mCurParams.getFloat("gamma", error);
+	blue_density = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("blue_density", error));
+	blue_horizon = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("blue_horizon", error));
+	haze_density = LLWLParamManager::getInstance()->mCurParams.getFloat("haze_density", error);
+	haze_horizon = LLWLParamManager::getInstance()->mCurParams.getFloat("haze_horizon", error);
+	density_multiplier = LLWLParamManager::getInstance()->mCurParams.getFloat("density_multiplier", error);
+	max_y = LLWLParamManager::getInstance()->mCurParams.getFloat("max_y", error);
+	glow = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("glow", error));
+	cloud_shadow = LLWLParamManager::getInstance()->mCurParams.getFloat("cloud_shadow", error);
+	cloud_color = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_color", error));
+	cloud_scale = LLWLParamManager::getInstance()->mCurParams.getFloat("cloud_scale", error);
+	cloud_pos_density1 = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_pos_density1", error));
+	cloud_pos_density2 = LLColor3(LLWLParamManager::getInstance()->mCurParams.getVector("cloud_pos_density2", error));
 
 	// light norm is different.  We need the sun's direction, not the light direction
 	// which could be from the moon.  And we need to clamp it
@@ -747,6 +736,11 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
 	// project the direction ray onto the sky dome.
 	F32 phi = acos(Pn[1]);
 	F32 sinA = sin(F_PI - phi);
+	if (fabsf(sinA) < 0.01f)
+	{ //avoid division by zero
+		sinA = 0.01f;
+	}
+
 	F32 Plen = dome_radius * sin(F_PI + phi + asin(dome_offset_ratio * sinA)) / sinA;
 
 	Pn *= Plen;
@@ -812,7 +806,7 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
 
 	// Haze color above cloud
 	vary_HazeColor = (blue_horizon * blue_weight * (sunlight + ambient)
-				+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight * temp2.mV[0] + ambient)
+				+ componentMult(haze_horizon * haze_weight, sunlight * temp2.mV[0] + ambient)
 			 );	
 
 	// Increase ambient when there are more clouds
@@ -823,7 +817,7 @@ void LLVOSky::calcSkyColorWLVert(LLVector3 & Pn, LLColor3 & vary_HazeColor, LLCo
 
 	// Haze color below cloud
 	LLColor3 additiveColorBelowCloud = (blue_horizon * blue_weight * (sunlight + tmpAmbient)
-				+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight * temp2.mV[0] + tmpAmbient)
+				+ componentMult(haze_horizon * haze_weight, sunlight * temp2.mV[0] + tmpAmbient)
 			 );	
 
 	// Final atmosphere additive
@@ -989,7 +983,7 @@ void LLVOSky::calcAtmospherics(void)
 		//haze color
 		vary_HazeColor =
 			(blue_horizon * blue_weight * (sunlight*(1.f - cloud_shadow) + tmpAmbient)	
-			+ componentMult(haze_horizon.mV[0] * haze_weight, sunlight*(1.f - cloud_shadow) * temp2.mV[0] + tmpAmbient)
+			+ componentMult(haze_horizon * haze_weight, sunlight*(1.f - cloud_shadow) * temp2.mV[0] + tmpAmbient)
 				 );	
 
 		//brightness of surface both sunlight and ambient
@@ -1025,7 +1019,7 @@ void LLVOSky::calcAtmospherics(void)
 	// Since WL scales everything by 2, there should always be at least a 2:1 brightness ratio
 	// between sunlight and point lights in windlight to normalize point lights.
 	F32 sun_dynamic_range = llmax(gSavedSettings.getF32("RenderSunDynamicRange"), 0.0001f);
-	LLWLParamManager::instance()->mSceneLightStrength = 2.0f * (1.0f + sun_dynamic_range * dp);
+	LLWLParamManager::getInstance()->mSceneLightStrength = 2.0f * (1.0f + sun_dynamic_range * dp);
 
 	mSunDiffuse = vary_SunlightColor;
 	mSunAmbient = vary_AmbientColor;
@@ -1039,9 +1033,8 @@ void LLVOSky::calcAtmospherics(void)
 	mFadeColor.setAlpha(0);
 }
 
-BOOL LLVOSky::idleUpdate(LLAgent &agent, LLWorld &world, const F64 &time)
+void LLVOSky::idleUpdate(LLAgent &agent, const F64 &time)
 {
-	return TRUE;
 }
 
 BOOL LLVOSky::updateSky()
@@ -1174,7 +1167,7 @@ BOOL LLVOSky::updateSky()
 		}
 	}
 
-	if (mDrawable.notNull() && mDrawable->getFace(0) && mDrawable->getFace(0)->mVertexBuffer.isNull())
+	if (mDrawable.notNull() && mDrawable->getFace(0) && !mDrawable->getFace(0)->getVertexBuffer())
 	{
 		gPipeline.markRebuild(mDrawable, LLDrawable::REBUILD_VOLUME, TRUE);
 	}
@@ -1225,14 +1218,15 @@ void LLVOSky::createDummyVertexBuffer()
 		mFace[FACE_DUMMY] = mDrawable->addFace(poolp, NULL);
 	}
 
-	if(mFace[FACE_DUMMY]->mVertexBuffer.isNull())
+	if(!mFace[FACE_DUMMY]->getVertexBuffer())
 	{
-		mFace[FACE_DUMMY]->mVertexBuffer = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_DYNAMIC_DRAW_ARB);
-		mFace[FACE_DUMMY]->mVertexBuffer->allocateBuffer(1, 1, TRUE);
+		LLVertexBuffer* buff = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_DYNAMIC_DRAW_ARB);
+		buff->allocateBuffer(1, 1, TRUE);
+		mFace[FACE_DUMMY]->setVertexBuffer(buff);
 	}
 }
 
-static LLFastTimer::DeclareTimer FTM_RENDER_FAKE_VBO_UPDATE("Fake VBO Update");
+static LLTrace::BlockTimerStatHandle FTM_RENDER_FAKE_VBO_UPDATE("Fake VBO Update");
 
 void LLVOSky::updateDummyVertexBuffer()
 {	
@@ -1245,24 +1239,24 @@ void LLVOSky::updateDummyVertexBuffer()
 		return ;
 	}
 
-	LLFastTimer t(FTM_RENDER_FAKE_VBO_UPDATE) ;
+	LL_RECORD_BLOCK_TIME(FTM_RENDER_FAKE_VBO_UPDATE) ;
 
-	if(!mFace[FACE_DUMMY] || mFace[FACE_DUMMY]->mVertexBuffer.isNull())
+	if(!mFace[FACE_DUMMY] || !mFace[FACE_DUMMY]->getVertexBuffer())
 		createDummyVertexBuffer() ;
 
 	LLStrider<LLVector3> vertices ;
-	mFace[FACE_DUMMY]->mVertexBuffer->getVertexStrider(vertices,  0);
+	mFace[FACE_DUMMY]->getVertexBuffer()->getVertexStrider(vertices,  0);
 	*vertices = mCameraPosAgent ;
-	mFace[FACE_DUMMY]->mVertexBuffer->setBuffer(0) ;
+	mFace[FACE_DUMMY]->getVertexBuffer()->flush();
 }
 //----------------------------------
 //end of fake vertex buffer updating
 //----------------------------------
-static LLFastTimer::DeclareTimer FTM_GEO_SKY("Sky Geometry");
+static LLTrace::BlockTimerStatHandle FTM_GEO_SKY("Sky Geometry");
 
 BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
 {
-	LLFastTimer ftm(FTM_GEO_SKY);
+	LL_RECORD_BLOCK_TIME(FTM_GEO_SKY);
 	if (mFace[FACE_REFLECTION] == NULL)
 	{
 		LLDrawPoolWater *poolp = (LLDrawPoolWater*) gPipeline.getPool(LLDrawPool::POOL_WATER);
@@ -1296,14 +1290,15 @@ BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
 	{
 		face = mFace[FACE_SIDE0 + side]; 
 
-		if (face->mVertexBuffer.isNull())
+		if (!face->getVertexBuffer())
 		{
 			face->setSize(4, 6);
 			face->setGeomIndex(0);
 			face->setIndicesIndex(0);
-			face->mVertexBuffer = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
-			face->mVertexBuffer->allocateBuffer(4, 6, TRUE);
-			
+			LLVertexBuffer* buff = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
+			buff->allocateBuffer(4, 6, TRUE);
+			face->setVertexBuffer(buff);
+
 			index_offset = face->getGeometry(verticesp,normalsp,texCoordsp, indicesp);
 			
 			S32 vtx = 0;
@@ -1336,7 +1331,7 @@ BOOL LLVOSky::updateGeometry(LLDrawable *drawable)
 			*indicesp++ = index_offset + 3;
 			*indicesp++ = index_offset + 2;
 
-			face->mVertexBuffer->setBuffer(0);
+			buff->flush();
 		}
 	}
 
@@ -1463,15 +1458,18 @@ BOOL LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, const S32 f, cons
 
 	facep = mFace[f]; 
 
-	if (facep->mVertexBuffer.isNull())
+	if (!facep->getVertexBuffer())
 	{
-		facep->setSize(4, 6);		
-		facep->mVertexBuffer = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
-		facep->mVertexBuffer->allocateBuffer(facep->getGeomCount(), facep->getIndicesCount(), TRUE);
+		facep->setSize(4, 6);	
+		LLVertexBuffer* buff = new LLVertexBuffer(LLDrawPoolSky::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
+		buff->allocateBuffer(facep->getGeomCount(), facep->getIndicesCount(), TRUE);
 		facep->setGeomIndex(0);
 		facep->setIndicesIndex(0);
+		facep->setVertexBuffer(buff);
 	}
 
+	llassert(facep->getVertexBuffer()->getNumIndices() == 6);
+
 	index_offset = facep->getGeometry(verticesp,normalsp,texCoordsp, indicesp);
 
 	if (-1 == index_offset)
@@ -1498,7 +1496,7 @@ BOOL LLVOSky::updateHeavenlyBodyGeometry(LLDrawable *drawable, const S32 f, cons
 	*indicesp++ = index_offset + 2;
 	*indicesp++ = index_offset + 3;
 
-	facep->mVertexBuffer->setBuffer(0);
+	facep->getVertexBuffer()->flush();
 
 	if (is_sun)
 	{
@@ -1867,13 +1865,14 @@ void LLVOSky::updateReflectionGeometry(LLDrawable *drawable, F32 H,
 
 	LLFace *face = mFace[FACE_REFLECTION]; 
 
-	if (face->mVertexBuffer.isNull() || quads*4 != face->getGeomCount())
+	if (!face->getVertexBuffer() || quads*4 != face->getGeomCount())
 	{
 		face->setSize(quads * 4, quads * 6);
-		face->mVertexBuffer = new LLVertexBuffer(LLDrawPoolWater::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
-		face->mVertexBuffer->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
+		LLVertexBuffer* buff = new LLVertexBuffer(LLDrawPoolWater::VERTEX_DATA_MASK, GL_STREAM_DRAW_ARB);
+		buff->allocateBuffer(face->getGeomCount(), face->getIndicesCount(), TRUE);
 		face->setIndicesIndex(0);
 		face->setGeomIndex(0);
+		face->setVertexBuffer(buff);
 	}
 	
 	LLStrider<LLVector3> verticesp;
@@ -2011,7 +2010,7 @@ void LLVOSky::updateReflectionGeometry(LLDrawable *drawable, F32 H,
 		}
 	}
 
-	face->mVertexBuffer->setBuffer(0);
+	face->getVertexBuffer()->flush();
 }
 
 
@@ -2021,9 +2020,12 @@ void LLVOSky::updateFog(const F32 distance)
 {
 	if (!gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_FOG))
 	{
-		glFogf(GL_FOG_DENSITY, 0);
-		glFogfv(GL_FOG_COLOR, (F32 *) &LLColor4::white.mV);
-		glFogf(GL_FOG_END, 1000000.f);
+		if (!LLGLSLShader::sNoFixedFunction)
+		{
+			glFogf(GL_FOG_DENSITY, 0);
+			glFogfv(GL_FOG_COLOR, (F32 *) &LLColor4::white.mV);
+			glFogf(GL_FOG_END, 1000000.f);
+		}
 		return;
 	}
 
@@ -2093,7 +2095,10 @@ void LLVOSky::updateFog(const F32 distance)
 	if (camera_height > water_height)
 	{
 		LLColor4 fog(render_fog_color);
-		glFogfv(GL_FOG_COLOR, fog.mV);
+		if (!LLGLSLShader::sNoFixedFunction)
+		{
+			glFogfv(GL_FOG_COLOR, fog.mV);
+		}
 		mGLFogCol = fog;
 
 		if (hide_clip_plane)
@@ -2101,13 +2106,19 @@ void LLVOSky::updateFog(const F32 distance)
 			// For now, set the density to extend to the cull distance.
 			const F32 f_log = 2.14596602628934723963618357029f; // sqrt(fabs(log(0.01f)))
 			fog_density = f_log/fog_distance;
-			glFogi(GL_FOG_MODE, GL_EXP2);
+			if (!LLGLSLShader::sNoFixedFunction)
+			{
+				glFogi(GL_FOG_MODE, GL_EXP2);
+			}
 		}
 		else
 		{
 			const F32 f_log = 4.6051701859880913680359829093687f; // fabs(log(0.01f))
 			fog_density = (f_log)/fog_distance;
-			glFogi(GL_FOG_MODE, GL_EXP);
+			if (!LLGLSLShader::sNoFixedFunction)
+			{
+				glFogi(GL_FOG_MODE, GL_EXP);
+			}
 		}
 	}
 	else
@@ -2115,8 +2126,8 @@ void LLVOSky::updateFog(const F32 distance)
 		F32 depth = water_height - camera_height;
 		
 		// get the water param manager variables
-		float water_fog_density = LLWaterParamManager::instance()->getFogDensity();
-		LLColor4 water_fog_color = LLDrawPoolWater::sWaterFogColor.mV;
+		float water_fog_density = LLWaterParamManager::getInstance()->getFogDensity();
+		LLColor4 water_fog_color(LLDrawPoolWater::sWaterFogColor.mV);
 		
 		// adjust the color based on depth.  We're doing linear approximations
 		float depth_scale = gSavedSettings.getF32("WaterGLFogDepthScale");
@@ -2127,37 +2138,34 @@ void LLVOSky::updateFog(const F32 distance)
 		fogCol.setAlpha(1);
 
 		// set the gl fog color
-		glFogfv(GL_FOG_COLOR, (F32 *) &fogCol.mV);
 		mGLFogCol = fogCol;
 
 		// set the density based on what the shaders use
 		fog_density = water_fog_density * gSavedSettings.getF32("WaterGLFogDensityScale");
-		glFogi(GL_FOG_MODE, GL_EXP2);
+
+		if (!LLGLSLShader::sNoFixedFunction)
+		{
+			glFogfv(GL_FOG_COLOR, (F32 *) &fogCol.mV);
+			glFogi(GL_FOG_MODE, GL_EXP2);
+		}
 	}
 
 	mFogColor = sky_fog_color;
 	mFogColor.setAlpha(1);
-	LLGLSFog gls_fog;
-
-	glFogf(GL_FOG_END, fog_distance*2.2f);
-
-	glFogf(GL_FOG_DENSITY, fog_density);
+	LLDrawPoolWater::sWaterFogEnd = fog_distance*2.2f;
 
-	glHint(GL_FOG_HINT, GL_NICEST);
+	if (!LLGLSLShader::sNoFixedFunction)
+	{
+		LLGLSFog gls_fog;
+		glFogf(GL_FOG_END, fog_distance*2.2f);
+		glFogf(GL_FOG_DENSITY, fog_density);
+		glHint(GL_FOG_HINT, GL_NICEST);
+	}
 	stop_glerror();
 }
 
-// static
-void LLHaze::initClass()
-{
-	sAirScaSeaLevel = LLHaze::calcAirScaSeaLevel();
-}
-
-
 
 // Functions used a lot.
-
-
 F32 color_norm_pow(LLColor3& col, F32 e, BOOL postmultiply)
 {
 	F32 mv = color_max(col);