merge

49 files changed, 996 insertions, 154 deletions

diff --git a/indra/llplugin/llpluginclassmedia.h b/indra/llplugin/llpluginclassmedia.h
index e7f303275e..d32cb0afe9 100644
--- a/indra/llplugin/llpluginclassmedia.h
+++ b/indra/llplugin/llpluginclassmedia.h
@@ -41,16 +41,16 @@ class LLPluginClassMedia : public LLPluginProcessParentOwner
 	LOG_CLASS(LLPluginClassMedia);
 public:
 	LLPluginClassMedia(LLPluginClassMediaOwner *owner);
-	virtual ~LLPluginClassMedia();
+	~LLPluginClassMedia();
 
 	// local initialization, called by the media manager when creating a source
-	virtual bool init(const std::string &launcher_filename, 
+	bool init(const std::string &launcher_filename, 
 					  const std::string &plugin_dir, 
 					  const std::string &plugin_filename, 
 					  bool debug);
 
 	// undoes everything init() didm called by the media manager when destroying a source
-	virtual void reset();
+	void reset();
 	
 	void idle(void);
 	
diff --git a/indra/llplugin/llplugininstance.h b/indra/llplugin/llplugininstance.h
index e6926c3e37..3643a15d8c 100644
--- a/indra/llplugin/llplugininstance.h
+++ b/indra/llplugin/llplugininstance.h
@@ -39,7 +39,7 @@
 class LLPluginInstanceMessageListener
 {
 public:
-	virtual ~LLPluginInstanceMessageListener();
+	~LLPluginInstanceMessageListener();
    /** Plugin receives message from plugin loader shell. */
 	virtual void receivePluginMessage(const std::string &message) = 0;
 };
diff --git a/indra/llplugin/llpluginmessagepipe.h b/indra/llplugin/llpluginmessagepipe.h
index 627577beb1..beb942c0fe 100644
--- a/indra/llplugin/llpluginmessagepipe.h
+++ b/indra/llplugin/llpluginmessagepipe.h
@@ -40,7 +40,8 @@ class LLPluginMessagePipeOwner
 	LOG_CLASS(LLPluginMessagePipeOwner);
 public:
 	LLPluginMessagePipeOwner();
-	virtual ~LLPluginMessagePipeOwner();
+	~LLPluginMessagePipeOwner();
+
 	// called with incoming messages
 	virtual void receiveMessageRaw(const std::string &message) = 0;
 	// called when the socket has an error
diff --git a/indra/llplugin/llpluginprocessparent.h b/indra/llplugin/llpluginprocessparent.h
index c66723f175..26c6b0c402 100644
--- a/indra/llplugin/llpluginprocessparent.h
+++ b/indra/llplugin/llpluginprocessparent.h
@@ -41,7 +41,7 @@
 class LLPluginProcessParentOwner
 {
 public:
-	virtual ~LLPluginProcessParentOwner();
+	~LLPluginProcessParentOwner();
 	virtual void receivePluginMessage(const LLPluginMessage &message) = 0;
 	virtual bool receivePluginMessageEarly(const LLPluginMessage &message) {return false;};
 	// This will only be called when the plugin has died unexpectedly 
diff --git a/indra/llrender/llgl.cpp b/indra/llrender/llgl.cpp
index 39f59c0bd8..4e3cfb9c8a 100644
--- a/indra/llrender/llgl.cpp
+++ b/indra/llrender/llgl.cpp
@@ -48,6 +48,7 @@
 #include "llstacktrace.h"
 
 #include "llglheaders.h"
+#include "llglslshader.h"
 
 #ifdef _DEBUG
 //#define GL_STATE_VERIFY
@@ -1781,6 +1782,16 @@ void LLGLState::checkClientArrays(const std::string& msg, U32 data_mask)
 LLGLState::LLGLState(LLGLenum state, S32 enabled) :
 	mState(state), mWasEnabled(FALSE), mIsEnabled(FALSE)
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //always disable state that's deprecated post GL 3.0
+		switch (state)
+		{
+			case GL_ALPHA_TEST:
+				enabled = 0;
+				break;
+		}
+	}
+
 	stop_glerror();
 	if (state)
 	{
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);
+}
diff --git a/indra/llrender/llglslshader.h b/indra/llrender/llglslshader.h
index 621e0b82ee..558ea66b50 100644
--- a/indra/llrender/llglslshader.h
+++ b/indra/llrender/llglslshader.h
@@ -47,6 +47,7 @@ public:
 	bool hasGamma;
 	S32 mIndexedTextureChannels;
 	bool disableTextureIndex;
+	bool hasAlphaMask;
 
 	// char numLights;
 	
@@ -67,6 +68,8 @@ public:
 	LLGLSLShader();
 
 	static GLhandleARB sCurBoundShader;
+	static LLGLSLShader* sCurBoundShaderPtr;
+
 	static bool sNoFixedFunction;
 
 	void unload();
@@ -105,6 +108,8 @@ public:
 	void uniformMatrix3fv(const std::string& uniform, U32 count, GLboolean transpose, const GLfloat *v);
 	void uniformMatrix4fv(const std::string& uniform, U32 count, GLboolean transpose, const GLfloat *v);
 
+	void setAlphaRange(F32 minimum, F32 maximum);
+
 	void vertexAttrib4f(U32 index, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
 	void vertexAttrib4fv(U32 index, GLfloat* v);
 	
diff --git a/indra/llrender/llimagegl.cpp b/indra/llrender/llimagegl.cpp
index 9ca3a23d52..7188b0fa44 100644
--- a/indra/llrender/llimagegl.cpp
+++ b/indra/llrender/llimagegl.cpp
@@ -1424,7 +1424,7 @@ void LLImageGL::deleteDeadTextures()
 		{
 			LLTexUnit* tex_unit = gGL.getTexUnit(i);
 
-			if (tex_unit->getCurrTexture() == tex)
+			if (tex_unit && tex_unit->getCurrTexture() == tex)
 			{
 				tex_unit->unbind(tex_unit->getCurrType());
 				stop_glerror();
@@ -1887,6 +1887,7 @@ BOOL LLImageGL::getMask(const LLVector2 &tc)
 
 void LLImageGL::setCategory(S32 category) 
 {
+#if 0 //turn this off temporarily because it is not in use now.
 	if(!gAuditTexture)
 	{
 		return ;
@@ -1907,6 +1908,7 @@ void LLImageGL::setCategory(S32 category)
 			mCategory = -1 ;
 		}
 	}
+#endif
 }
 
 //for debug use 
diff --git a/indra/llrender/llrender.cpp b/indra/llrender/llrender.cpp
index 70df1dd1d1..d72918b15d 100644
--- a/indra/llrender/llrender.cpp
+++ b/indra/llrender/llrender.cpp
@@ -1168,6 +1168,11 @@ void LLRender::setAlphaRejectSettings(eCompareFunc func, F32 value)
 {
 	flush();
 
+	if (LLGLSLShader::sNoFixedFunction)
+	{ //glAlphaFunc is deprecated in OpenGL 3.3
+		return;
+	}
+
 	if (mCurrAlphaFunc != func ||
 		mCurrAlphaFuncVal != value)
 	{
@@ -1182,6 +1187,30 @@ 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)
diff --git a/indra/llrender/llshadermgr.cpp b/indra/llrender/llshadermgr.cpp
index 751b250d96..986c1f2774 100644
--- a/indra/llrender/llshadermgr.cpp
+++ b/indra/llrender/llshadermgr.cpp
@@ -206,21 +206,40 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 	
 	if (features->hasLighting)
 	{
-	
 		if (features->hasWaterFog)
 		{
 			if (features->disableTextureIndex)
 			{
-				if (!shader->attachObject("lighting/lightWaterNonIndexedF.glsl"))
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightWaterAlphaMaskNonIndexedF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightWaterNonIndexedF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 			}
 			else 
 			{
-				if (!shader->attachObject("lighting/lightWaterF.glsl"))
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightWaterAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightWaterF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 				shader->mFeatures.mIndexedTextureChannels = gGLManager.mNumTextureImageUnits-1;
 			}
@@ -230,16 +249,36 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 		{
 			if (features->disableTextureIndex)
 			{
-				if (!shader->attachObject("lighting/lightNonIndexedF.glsl"))
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightAlphaMaskNonIndexedF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightNonIndexedF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 			}
 			else 
 			{
-				if (!shader->attachObject("lighting/lightF.glsl"))
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 				shader->mFeatures.mIndexedTextureChannels = gGLManager.mNumTextureImageUnits-1;
 			}
@@ -272,14 +311,28 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 		{
 			if (features->disableTextureIndex)
 			{
-				if (!shader->attachObject("lighting/lightFullbrightWaterNonIndexedF.glsl"))
+				if (features->hasAlphaMask)
+				{
+					if (!shader->attachObject("lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else if (!shader->attachObject("lighting/lightFullbrightWaterNonIndexedF.glsl"))
 				{
 					return FALSE;
 				}
 			}
 			else 
 			{
-				if (!shader->attachObject("lighting/lightFullbrightWaterF.glsl"))
+				if (features->hasAlphaMask)
+				{
+					if (!shader->attachObject("lighting/lightFullbrightWaterAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else if (!shader->attachObject("lighting/lightFullbrightWaterF.glsl"))
 				{
 					return FALSE;
 				}
@@ -310,16 +363,37 @@ BOOL LLShaderMgr::attachShaderFeatures(LLGLSLShader * shader)
 		{
 			if (features->disableTextureIndex)
 			{
-				if (!shader->attachObject("lighting/lightFullbrightNonIndexedF.glsl"))
+
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightFullbrightNonIndexedAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightFullbrightNonIndexedF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 			}
 			else 
 			{
-				if (!shader->attachObject("lighting/lightFullbrightF.glsl"))
+				if (features->hasAlphaMask)
 				{
-					return FALSE;
+					if (!shader->attachObject("lighting/lightFullbrightAlphaMaskF.glsl"))
+					{
+						return FALSE;
+					}
+				}
+				else
+				{
+					if (!shader->attachObject("lighting/lightFullbrightF.glsl"))
+					{
+						return FALSE;
+					}
 				}
 				shader->mFeatures.mIndexedTextureChannels = gGLManager.mNumTextureImageUnits-1;
 			}
@@ -406,7 +480,7 @@ void LLShaderMgr::dumpObjectLog(GLhandleARB ret, BOOL warns)
 			LL_DEBUGS("ShaderLoading") << log << LL_ENDL;
 		}
 	}
-}
+ }
 
 GLhandleARB LLShaderMgr::loadShaderFile(const std::string& filename, S32 & shader_level, GLenum type, S32 texture_index_channels)
 {
diff --git a/indra/llwindow/llwindowwin32.cpp b/indra/llwindow/llwindowwin32.cpp
index 551d487cc8..1239e2d40b 100644
--- a/indra/llwindow/llwindowwin32.cpp
+++ b/indra/llwindow/llwindowwin32.cpp
@@ -1172,8 +1172,39 @@ BOOL LLWindowWin32::switchContext(BOOL fullscreen, const LLCoordScreen &size, BO
 
 		// First we try and get a 32 bit depth pixel format
 		BOOL result = wglChoosePixelFormatARB(mhDC, attrib_list, NULL, 256, pixel_formats, &num_formats);
+		
+		while(!result && mFSAASamples > 0) 
+		{
+			llwarns << "FSAASamples: " << mFSAASamples << " not supported." << llendl ;
+
+			mFSAASamples /= 2 ; //try to decrease sample pixel number until to disable anti-aliasing
+			if(mFSAASamples < 2)
+			{
+				mFSAASamples = 0 ;
+			}
+
+			if (mFSAASamples > 0)
+			{
+				attrib_list[end_attrib + 3] = mFSAASamples;
+			}
+			else
+			{
+				cur_attrib = end_attrib ;
+				end_attrib = 0 ;
+				attrib_list[cur_attrib++] = 0 ; //end
+			}
+			result = wglChoosePixelFormatARB(mhDC, attrib_list, NULL, 256, pixel_formats, &num_formats);
+
+			if(result)
+			{
+				llwarns << "Only support FSAASamples: " << mFSAASamples << llendl ;
+			}
+		}
+
 		if (!result)
 		{
+			llwarns << "mFSAASamples: " << mFSAASamples << llendl ;
+
 			close();
 			show_window_creation_error("Error after wglChoosePixelFormatARB 32-bit");
 			return FALSE;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
new file mode 100644
index 0000000000..338d0ebb2b
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskF.glsl
@@ -0,0 +1,30 @@
+/** 
+ * @file diffuseF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+uniform sampler2D diffuseMap;
+
+varying vec3 vary_normal;
+
+void main() 
+{
+	vec4 col = gl_Color * texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+	
+	if (col.a < minimum_alpha || col.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	gl_FragData[0] = vec4(col.rgb, 0.0);
+	gl_FragData[1] = vec4(0,0,0,0); // spec
+	vec3 nvn = normalize(vary_normal);
+	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+}
+
diff --git a/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
new file mode 100644
index 0000000000..0671cb94bd
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/diffuseAlphaMaskIndexedF.glsl
@@ -0,0 +1,26 @@
+/** 
+ * @file diffuseAlphaMaskIndexedF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+varying vec3 vary_normal;
+
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+void main() 
+{
+	vec4 col = diffuseLookup(gl_TexCoord[0].xy) * gl_Color;
+	
+	if (col.a < minimum_alpha || col.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	gl_FragData[0] = vec4(col.rgb, 0.0);
+	gl_FragData[1] = vec4(0,0,0,0);
+	vec3 nvn = normalize(vary_normal);
+	gl_FragData[2] = vec4(nvn.xy * 0.5 + 0.5, nvn.z, 0.0);
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
index f1e9955bb6..7337f853a5 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/impostorF.glsl
@@ -23,6 +23,8 @@
  * $/LicenseInfo$
  */
  
+uniform float minimum_alpha;

+uniform float maximum_alpha;

 
 
 uniform sampler2D diffuseMap;
@@ -32,6 +34,12 @@ uniform sampler2D specularMap;
 void main() 
 {
 	vec4 col = texture2D(diffuseMap, gl_TexCoord[0].xy);
+
+	if (col.a < minimum_alpha || col.a > maximum_alpha)

+	{

+		discard;

+	}

+
 	gl_FragData[0] = vec4(col.rgb, col.a * 0.005);
 	gl_FragData[1] = texture2D(specularMap, gl_TexCoord[0].xy);
 	gl_FragData[2] = vec4(texture2D(normalMap, gl_TexCoord[0].xy).xyz, 0.0);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
new file mode 100644
index 0000000000..e24d0b666e
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskF.glsl
@@ -0,0 +1,27 @@
+/** 
+ * @file shadowAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+uniform sampler2D diffuseMap;
+
+varying vec4 post_pos;
+
+void main() 
+{
+	float alpha = texture2D(diffuseMap, gl_TexCoord[0].xy).a * gl_Color.a;
+
+	if (alpha < minimum_alpha || alpha > maximum_alpha)
+	{
+		discard;
+	}
+
+	gl_FragColor = vec4(1,1,1,1);
+	
+	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
new file mode 100644
index 0000000000..58e9bcec58
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
@@ -0,0 +1,23 @@
+/** 
+ * @file shadowAlphaMaskV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+
+varying vec4 post_pos;
+
+void main()
+{
+	//transform vertex
+	vec4 pos = gl_ModelViewProjectionMatrix*gl_Vertex;
+	
+	post_pos = pos;
+	
+	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
+	
+	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
+	gl_FrontColor = gl_Color;
+}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
index b687d97da0..785fe0084f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowF.glsl
@@ -25,13 +25,11 @@
  
 
 
-uniform sampler2D diffuseMap;
-
 varying vec4 post_pos;
 
 void main() 
 {
-	gl_FragColor = vec4(1,1,1,texture2D(diffuseMap, gl_TexCoord[0].xy).a * gl_Color.a);
+	gl_FragColor = vec4(1,1,1,1);
 	
 	gl_FragDepth = max(post_pos.z/post_pos.w*0.5+0.5, 0.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
index 394fedf28f..66fee10887 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
@@ -35,7 +35,4 @@ void main()
 	post_pos = pos;
 	
 	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-	
-	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
-	gl_FrontColor = gl_Color;
 }
diff --git a/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl b/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl
new file mode 100644
index 0000000000..13597ee439
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/objects/impostorF.glsl
@@ -0,0 +1,26 @@
+/** 
+ * @file impostorF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+uniform sampler2D diffuseMap;
+
+void main()
+{
+	vec4 color = texture2D(diffuseMap,gl_TexCoord[0].xy) * gl_Color;
+	
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	gl_FragColor = color;
+}
diff --git a/indra/newview/app_settings/shaders/class1/objects/impostorV.glsl b/indra/newview/app_settings/shaders/class1/objects/impostorV.glsl
new file mode 100644
index 0000000000..724b86a1b7
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class1/objects/impostorV.glsl
@@ -0,0 +1,16 @@
+/**
+ * @file impostorV.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+ 
+void main()
+{
+	//transform vertex
+	gl_Position = ftransform();
+	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
+	
+	gl_FrontColor = gl_Color;
+}
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskF.glsl
new file mode 100644
index 0000000000..1211ad7a89
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskF.glsl
@@ -0,0 +1,30 @@
+/** 
+ * @file lightAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec3 atmosLighting(vec3 light);
+vec3 scaleSoftClip(vec3 light);
+
+void default_lighting() 
+{
+	vec4 color = diffuseLookup(gl_TexCoord[0].xy) * gl_Color;
+	
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = atmosLighting(color.rgb);
+
+	color.rgb = scaleSoftClip(color.rgb);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskNonIndexedF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskNonIndexedF.glsl
new file mode 100644
index 0000000000..1a7d67b943
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightAlphaMaskNonIndexedF.glsl
@@ -0,0 +1,33 @@
+/** 
+ * @file lightAlphaMaskNonIndexedF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+
+uniform sampler2D diffuseMap;
+
+vec3 atmosLighting(vec3 light);
+vec3 scaleSoftClip(vec3 light);
+
+void default_lighting() 
+{
+	vec4 color = texture2D(diffuseMap,gl_TexCoord[0].xy) * gl_Color;
+
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = atmosLighting(color.rgb);
+
+	color.rgb = scaleSoftClip(color.rgb);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightAlphaMaskF.glsl
new file mode 100644
index 0000000000..73e885a7e9
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightAlphaMaskF.glsl
@@ -0,0 +1,29 @@
+/** 
+ * @file lightFullbrightAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+void fullbright_lighting()
+{
+	vec4 color = diffuseLookup(gl_TexCoord[0].xy) * gl_Color;
+	
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	color.rgb = fullbrightScaleSoftClip(color.rgb);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
new file mode 100644
index 0000000000..55dfe9b166
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightNonIndexedAlphaMaskF.glsl
@@ -0,0 +1,31 @@
+/** 
+ * @file lightFullbrightNonIndexedAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec3 fullbrightScaleSoftClip(vec3 light);
+
+uniform sampler2D diffuseMap;
+
+void fullbright_lighting()
+{
+	vec4 color = texture2D(diffuseMap,gl_TexCoord[0].xy) * gl_Color;
+	
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	color.rgb = fullbrightScaleSoftClip(color.rgb);
+
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterAlphaMaskF.glsl
new file mode 100644
index 0000000000..e4cea077f9
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterAlphaMaskF.glsl
@@ -0,0 +1,29 @@
+/** 
+ * @file lightFullbrightWaterAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+vec4 diffuseLookup(vec2 texcoord);
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void fullbright_lighting_water()
+{
+	vec4 color = diffuseLookup(gl_TexCoord[0].xy) * gl_Color;
+
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	gl_FragColor = applyWaterFog(color);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
new file mode 100644
index 0000000000..e8533f94a7
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl
@@ -0,0 +1,29 @@
+/** 
+ * @file lightFullbrightWaterNonIndexedAlphaMaskF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+uniform sampler2D diffuseMap;
+
+vec3 fullbrightAtmosTransport(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void fullbright_lighting_water()
+{
+	vec4 color = texture2D(diffuseMap, gl_TexCoord[0].xy) * gl_Color;
+
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = fullbrightAtmosTransport(color.rgb);
+	
+	gl_FragColor = applyWaterFog(color);
+}
+
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);
+}
+
diff --git a/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskNonIndexedF.glsl b/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskNonIndexedF.glsl
new file mode 100644
index 0000000000..907140effd
--- /dev/null
+++ b/indra/newview/app_settings/shaders/class2/lighting/lightWaterAlphaMaskNonIndexedF.glsl
@@ -0,0 +1,31 @@
+/** 
+ * @file lightWaterAlphaMaskNonIndexedF.glsl
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * $/LicenseInfo$
+ */
+ 
+uniform float minimum_alpha;
+uniform float maximum_alpha;
+
+uniform sampler2D diffuseMap;
+
+vec3 atmosLighting(vec3 light);
+vec4 applyWaterFog(vec4 color);
+
+void default_lighting_water()
+{
+	vec4 color = texture2D(diffuseMap,gl_TexCoord[0].xy) * gl_Color;
+
+	if (color.a < minimum_alpha || color.a > maximum_alpha)
+	{
+		discard;
+	}
+
+	color.rgb = atmosLighting(color.rgb);
+
+	color = applyWaterFog(color);
+	
+	gl_FragColor = color;
+}
+
diff --git a/indra/newview/lldrawpoolalpha.cpp b/indra/newview/lldrawpoolalpha.cpp
index ddcf42e523..9719140a37 100644
--- a/indra/newview/lldrawpoolalpha.cpp
+++ b/indra/newview/lldrawpoolalpha.cpp
@@ -88,16 +88,13 @@ void LLDrawPoolAlpha::endDeferredPass(S32 pass)
 
 void LLDrawPoolAlpha::renderDeferred(S32 pass)
 {
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.f);
-	{
-		LLFastTimer t(FTM_RENDER_GRASS);
-		gDeferredTreeProgram.bind();
-		LLGLEnable test(GL_ALPHA_TEST);
-		//render alpha masked objects
-		LLRenderPass::renderTexture(LLRenderPass::PASS_ALPHA_MASK, getVertexDataMask());
-		gDeferredTreeProgram.unbind();
-	}			
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	LLFastTimer t(FTM_RENDER_GRASS);
+	gDeferredDiffuseAlphaMaskProgram.bind();
+	gDeferredDiffuseAlphaMaskProgram.setAlphaRange(0.33f, 1.f);
+
+	//render alpha masked objects
+	LLRenderPass::pushBatches(LLRenderPass::PASS_ALPHA_MASK, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
+	gDeferredDiffuseAlphaMaskProgram.unbind();			
 }
 
 
@@ -124,7 +121,7 @@ void LLDrawPoolAlpha::beginPostDeferredPass(S32 pass)
 	if (pass == 0)
 	{
 		simple_shader = &gDeferredAlphaProgram;
-		fullbright_shader = &gObjectFullbrightProgram;
+		fullbright_shader = &gObjectFullbrightAlphaMaskProgram;
 
 		//prime simple shader (loads shadow relevant uniforms)
 		gPipeline.bindDeferredShader(*simple_shader);
@@ -138,7 +135,8 @@ void LLDrawPoolAlpha::beginPostDeferredPass(S32 pass)
 		gPipeline.mDeferredDepth.bindTarget();
 		simple_shader = NULL;
 		fullbright_shader = NULL;
-		gObjectFullbrightProgram.bind();
+		gObjectFullbrightAlphaMaskProgram.bind();
+		gObjectFullbrightAlphaMaskProgram.setAlphaRange(0.33f, 1.f);
 	}
 
 	deferred_render = TRUE;
@@ -157,7 +155,7 @@ void LLDrawPoolAlpha::endPostDeferredPass(S32 pass)
 	{
 		gPipeline.mDeferredDepth.flush();
 		gPipeline.mScreen.bindTarget();
-		gObjectFullbrightProgram.unbind();
+		gObjectFullbrightAlphaMaskProgram.unbind();
 	}
 
 	deferred_render = FALSE;
@@ -175,13 +173,13 @@ void LLDrawPoolAlpha::beginRenderPass(S32 pass)
 	
 	if (LLPipeline::sUnderWaterRender)
 	{
-		simple_shader = &gObjectSimpleWaterProgram;
-		fullbright_shader = &gObjectFullbrightWaterProgram;
+		simple_shader = &gObjectSimpleWaterAlphaMaskProgram;
+		fullbright_shader = &gObjectFullbrightWaterAlphaMaskProgram;
 	}
 	else
 	{
-		simple_shader = &gObjectSimpleProgram;
-		fullbright_shader = &gObjectFullbrightProgram;
+		simple_shader = &gObjectSimpleAlphaMaskProgram;
+		fullbright_shader = &gObjectFullbrightAlphaMaskProgram;
 	}
 
 	if (mVertexShaderLevel > 0)
@@ -227,29 +225,32 @@ void LLDrawPoolAlpha::render(S32 pass)
 		mAlphaDFactor = LLRender::BF_ZERO; // block (zero-out) glow where the alpha test succeeds
 		gGL.blendFunc(mColorSFactor, mColorDFactor, mAlphaSFactor, mAlphaDFactor);
 
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.33f);
 		if (mVertexShaderLevel > 0)
 		{
-			if (!LLPipeline::sRenderDeferred)
+			if (!LLPipeline::sRenderDeferred || !deferred_render)
 			{
 				simple_shader->bind();
+				simple_shader->setAlphaRange(0.33f, 1.f);
+
 				pushBatches(LLRenderPass::PASS_ALPHA_MASK, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
 			}
 			if (fullbright_shader)
 			{
 				fullbright_shader->bind();
+				fullbright_shader->setAlphaRange(0.33f, 1.f);
 			}
 			pushBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK, getVertexDataMask() | LLVertexBuffer::MAP_TEXTURE_INDEX, TRUE, TRUE);
 			//LLGLSLShader::bindNoShader();
 		}
 		else
 		{
+			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.33f); //OK
 			gPipeline.enableLightsFullbright(LLColor4(1,1,1,1));
 			pushBatches(LLRenderPass::PASS_FULLBRIGHT_ALPHA_MASK, getVertexDataMask());
 			gPipeline.enableLightsDynamic();
 			pushBatches(LLRenderPass::PASS_ALPHA_MASK, getVertexDataMask());
+			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT); //OK
 		}
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 	}
 
 	LLGLDepthTest depth(GL_TRUE, LLDrawPoolWater::sSkipScreenCopy || 
@@ -257,7 +258,6 @@ void LLDrawPoolAlpha::render(S32 pass)
 
 	if (deferred_render && pass == 1)
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.33f);
 		gGL.blendFunc(LLRender::BF_SOURCE_ALPHA, LLRender::BF_ONE_MINUS_SOURCE_ALPHA);
 	}
 	else
@@ -268,13 +268,33 @@ void LLDrawPoolAlpha::render(S32 pass)
 		mAlphaDFactor = LLRender::BF_ONE_MINUS_SOURCE_ALPHA;       // }
 		gGL.blendFunc(mColorSFactor, mColorDFactor, mAlphaSFactor, mAlphaDFactor);
 
-		if (LLPipeline::sImpostorRender)
+		if (mVertexShaderLevel > 0)
 		{
-			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
+			if (LLPipeline::sImpostorRender)
+			{
+				fullbright_shader->bind();
+				fullbright_shader->setAlphaRange(0.5f, 1.f);
+				simple_shader->bind();
+				simple_shader->setAlphaRange(0.5f, 1.f);
+			}				
+			else
+			{
+				fullbright_shader->bind();
+				fullbright_shader->setAlphaRange(0.f, 1.f);
+				simple_shader->bind();
+				simple_shader->setAlphaRange(0.f, 1.f);
+			}
 		}
 		else
 		{
-			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+			if (LLPipeline::sImpostorRender)
+			{
+				gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f); //OK
+			}
+			else
+			{
+				gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT); //OK
+			}
 		}
 	}
 
@@ -291,7 +311,6 @@ void LLDrawPoolAlpha::render(S32 pass)
 
 	if (deferred_render && pass == 1)
 	{
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
 	}
 
diff --git a/indra/newview/lldrawpoolavatar.cpp b/indra/newview/lldrawpoolavatar.cpp
index 9f790d03fe..28e464b60d 100644
--- a/indra/newview/lldrawpoolavatar.cpp
+++ b/indra/newview/lldrawpoolavatar.cpp
@@ -258,7 +258,6 @@ void LLDrawPoolAvatar::beginPostDeferredAlpha()
 	sSkipOpaque = TRUE;
 	sShaderLevel = mVertexShaderLevel;
 	sVertexProgram = &gDeferredAvatarAlphaProgram;
-
 	sRenderingSkinned = TRUE;
 
 	gPipeline.bindDeferredShader(*sVertexProgram);
@@ -361,7 +360,7 @@ void LLDrawPoolAvatar::beginShadowPass(S32 pass)
 		{
 			gAvatarMatrixParam = sVertexProgram->mUniform[LLViewerShaderMgr::AVATAR_MATRIX];
 		}
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER_EQUAL, 0.2f);
+		//gGL.setAlphaRejectSettings(LLRender::CF_GREATER_EQUAL, 0.2f);
 		
 		glColor4f(1,1,1,1);
 
@@ -590,12 +589,22 @@ void LLDrawPoolAvatar::beginImpostor()
 		LLVOAvatar::sNumVisibleAvatars = 0;
 	}
 
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gImpostorProgram.bind();
+		gImpostorProgram.setAlphaRange(0.01f, 1.f);
+	}
+
 	gPipeline.enableLightsFullbright(LLColor4(1,1,1,1));
 	sDiffuseChannel = 0;
 }
 
 void LLDrawPoolAvatar::endImpostor()
 {
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gImpostorProgram.unbind();
+	}
 	gPipeline.enableLightsDynamic();
 }
 
@@ -605,16 +614,17 @@ void LLDrawPoolAvatar::beginRigid()
 	{
 		if (LLPipeline::sUnderWaterRender)
 		{
-			sVertexProgram = &gObjectSimpleNonIndexedWaterProgram;
+			sVertexProgram = &gObjectAlphaMaskNonIndexedWaterProgram;
 		}
 		else
 		{
-			sVertexProgram = &gObjectSimpleNonIndexedProgram;
+			sVertexProgram = &gObjectAlphaMaskNonIndexedProgram;
 		}
 		
 		if (sVertexProgram != NULL)
 		{	//eyeballs render with the specular shader
 			sVertexProgram->bind();
+			sVertexProgram->setAlphaRange(0.2f, 1.f);
 		}
 	}
 	else
@@ -647,6 +657,7 @@ void LLDrawPoolAvatar::beginDeferredImpostor()
 	sDiffuseChannel = sVertexProgram->enableTexture(LLViewerShaderMgr::DIFFUSE_MAP);
 
 	sVertexProgram->bind();
+	sVertexProgram->setAlphaRange(0.01f, 1.f);
 }
 
 void LLDrawPoolAvatar::endDeferredImpostor()
@@ -692,11 +703,11 @@ void LLDrawPoolAvatar::beginSkinned()
 	{
 		if (LLPipeline::sUnderWaterRender)
 		{
-			sVertexProgram = &gObjectSimpleNonIndexedWaterProgram;
+			sVertexProgram = &gObjectAlphaMaskNonIndexedWaterProgram;
 		}
 		else
 		{
-			sVertexProgram = &gObjectSimpleNonIndexedProgram;
+			sVertexProgram = &gObjectAlphaMaskNonIndexedProgram;
 		}
 	}
 	
@@ -728,6 +739,11 @@ void LLDrawPoolAvatar::beginSkinned()
 			sVertexProgram->bind();
 		}
 	}
+
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		sVertexProgram->setAlphaRange(0.2f, 1.f);
+	}
 }
 
 void LLDrawPoolAvatar::endSkinned()
diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index d801f6df18..0742250b0b 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -155,6 +155,7 @@ void LLStandardBumpmap::addstandard()
 			LLViewerTextureManager::getFetchedTexture(LLUUID(bump_image_id));	
 		gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->setBoostLevel(LLViewerTexture::BOOST_BUMP) ;
 		gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->setLoadedCallback(LLBumpImageList::onSourceStandardLoaded, 0, TRUE, FALSE, NULL, NULL );
+		gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount].mImage->forceToSaveRawImage(0) ;
 		LLStandardBumpmap::sStandardBumpmapCount++;
 	}
 
@@ -1073,11 +1074,12 @@ LLViewerTexture* LLBumpImageList::getBrightnessDarknessImage(LLViewerFetchedText
 		if (!src_image->hasCallbacks())
 		{ //if image has no callbacks but resolutions don't match, trigger raw image loaded callback again
 			if (src_image->getWidth() != bump->getWidth() ||
-				src_image->getHeight() != bump->getHeight() ||
-				(LLPipeline::sRenderDeferred && bump->getComponents() != 4))
+				src_image->getHeight() != bump->getHeight())// ||
+				//(LLPipeline::sRenderDeferred && bump->getComponents() != 4))
 			{
 				src_image->setBoostLevel(LLViewerTexture::BOOST_BUMP) ;
 				src_image->setLoadedCallback( callback_func, 0, TRUE, FALSE, new LLUUID(src_image->getID()), NULL );
+				src_image->forceToSaveRawImage(0) ;
 			}
 		}
 	}
diff --git a/indra/newview/lldrawpoolsimple.cpp b/indra/newview/lldrawpoolsimple.cpp
index 224f149c6b..eec4ee6bac 100644
--- a/indra/newview/lldrawpoolsimple.cpp
+++ b/indra/newview/lldrawpoolsimple.cpp
@@ -182,7 +182,6 @@ void LLDrawPoolSimple::endRenderPass(S32 pass)
 void LLDrawPoolSimple::render(S32 pass)
 {
 	LLGLDisable blend(GL_BLEND);
-	LLGLDisable alpha_test(GL_ALPHA_TEST);
 	
 	{ //render simple
 		LLFastTimer t(FTM_RENDER_SIMPLE);
@@ -202,6 +201,7 @@ void LLDrawPoolSimple::render(S32 pass)
 		}
 		else
 		{
+			LLGLDisable alpha_test(GL_ALPHA_TEST);
 			renderTexture(LLRenderPass::PASS_SIMPLE, getVertexDataMask());
 		}
 		
@@ -256,19 +256,21 @@ void LLDrawPoolGrass::beginRenderPass(S32 pass)
 
 	if (LLPipeline::sUnderWaterRender)
 	{
-		simple_shader = &gObjectSimpleNonIndexedWaterProgram;
+		simple_shader = &gObjectAlphaMaskNonIndexedWaterProgram;
 	}
 	else
 	{
-		simple_shader = &gObjectSimpleNonIndexedProgram;
+		simple_shader = &gObjectAlphaMaskNonIndexedProgram;
 	}
 
 	if (mVertexShaderLevel > 0)
 	{
 		simple_shader->bind();
+		simple_shader->setAlphaRange(0.5f, 1.f);
 	}
 	else 
 	{
+		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
 		// don't use shaders!
 		if (gGLManager.mHasShaderObjects)
 		{
@@ -286,22 +288,23 @@ void LLDrawPoolGrass::endRenderPass(S32 pass)
 	{
 		simple_shader->unbind();
 	}
+	else
+	{
+		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	}
 }
 
 void LLDrawPoolGrass::render(S32 pass)
 {
 	LLGLDisable blend(GL_BLEND);
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
-
+	
 	{
 		LLFastTimer t(FTM_RENDER_GRASS);
 		LLGLEnable test(GL_ALPHA_TEST);
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
 		//render grass
 		LLRenderPass::renderTexture(LLRenderPass::PASS_GRASS, getVertexDataMask());
-	}			
-
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	}
 }
 
 void LLDrawPoolGrass::beginDeferredPass(S32 pass)
@@ -316,17 +319,13 @@ void LLDrawPoolGrass::endDeferredPass(S32 pass)
 
 void LLDrawPoolGrass::renderDeferred(S32 pass)
 {
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.f);
-
 	{
 		LLFastTimer t(FTM_RENDER_GRASS_DEFERRED);
-		gDeferredTreeProgram.bind();
-		LLGLEnable test(GL_ALPHA_TEST);
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.bind();
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.setAlphaRange(0.5f, 1.f);
 		//render grass
 		LLRenderPass::renderTexture(LLRenderPass::PASS_GRASS, getVertexDataMask());
 	}			
-
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 }
 
 
diff --git a/indra/newview/lldrawpooltree.cpp b/indra/newview/lldrawpooltree.cpp
index 429e06b227..a6e0151114 100644
--- a/indra/newview/lldrawpooltree.cpp
+++ b/indra/newview/lldrawpooltree.cpp
@@ -62,24 +62,25 @@ void LLDrawPoolTree::prerender()
 void LLDrawPoolTree::beginRenderPass(S32 pass)
 {
 	LLFastTimer t(FTM_RENDER_TREES);
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
-	
+		
 	if (LLPipeline::sUnderWaterRender)
 	{
-		shader = &gObjectSimpleNonIndexedWaterProgram;
+		shader = &gObjectAlphaMaskNonIndexedWaterProgram;
 	}
 	else
 	{
-		shader = &gObjectSimpleNonIndexedProgram;
+		shader = &gObjectAlphaMaskNonIndexedProgram;
 	}
 
 	if (gPipeline.canUseVertexShaders())
 	{
 		shader->bind();
+		shader->setAlphaRange(0.5f, 1.f);
 	}
 	else
 	{
 		gPipeline.enableLightsDynamic();
+		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
 	}
 }
 
@@ -92,7 +93,7 @@ void LLDrawPoolTree::render(S32 pass)
 		return;
 	}
 
-	LLGLEnable test(GL_ALPHA_TEST);
+	LLGLState test(GL_ALPHA_TEST, LLGLSLShader::sNoFixedFunction ? 0 : 1);
 	LLOverrideFaceColor color(this, 1.f, 1.f, 1.f, 1.f);
 
 	if (gSavedSettings.getBOOL("RenderAnimateTrees"))
@@ -121,12 +122,16 @@ void LLDrawPoolTree::render(S32 pass)
 void LLDrawPoolTree::endRenderPass(S32 pass)
 {
 	LLFastTimer t(FTM_RENDER_TREES);
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-	
+		
 	if (gPipeline.canUseWindLightShadersOnObjects())
 	{
 		shader->unbind();
 	}
+	
+	if (mVertexShaderLevel <= 0)
+	{
+		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	}
 }
 
 //============================================
@@ -135,10 +140,10 @@ void LLDrawPoolTree::endRenderPass(S32 pass)
 void LLDrawPoolTree::beginDeferredPass(S32 pass)
 {
 	LLFastTimer t(FTM_RENDER_TREES);
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.f);
 		
-	shader = &gDeferredTreeProgram;
+	shader = &gDeferredNonIndexedDiffuseAlphaMaskProgram;
 	shader->bind();
+	shader->setAlphaRange(0.5f, 1.f);
 }
 
 void LLDrawPoolTree::renderDeferred(S32 pass)
@@ -149,8 +154,7 @@ void LLDrawPoolTree::renderDeferred(S32 pass)
 void LLDrawPoolTree::endDeferredPass(S32 pass)
 {
 	LLFastTimer t(FTM_RENDER_TREES);
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-	
+		
 	shader->unbind();
 }
 
@@ -160,11 +164,12 @@ void LLDrawPoolTree::endDeferredPass(S32 pass)
 void LLDrawPoolTree::beginShadowPass(S32 pass)
 {
 	LLFastTimer t(FTM_SHADOW_TREE);
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
+	
 	glPolygonOffset(gSavedSettings.getF32("RenderDeferredTreeShadowOffset"),
 					gSavedSettings.getF32("RenderDeferredTreeShadowBias"));
 
-	gDeferredShadowProgram.bind();
+	gDeferredShadowAlphaMaskProgram.bind();
+	gDeferredShadowAlphaMaskProgram.setAlphaRange(0.5f, 1.f);
 }
 
 void LLDrawPoolTree::renderShadow(S32 pass)
@@ -175,12 +180,9 @@ void LLDrawPoolTree::renderShadow(S32 pass)
 void LLDrawPoolTree::endShadowPass(S32 pass)
 {
 	LLFastTimer t(FTM_SHADOW_TREE);
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-
+	
 	glPolygonOffset(gSavedSettings.getF32("RenderDeferredSpotShadowOffset"),
 						gSavedSettings.getF32("RenderDeferredSpotShadowBias"));
-
-	//gDeferredShadowProgram.unbind();
 }
 
 
diff --git a/indra/newview/lldrawpoolwlsky.cpp b/indra/newview/lldrawpoolwlsky.cpp
index a219386b53..79a835fd14 100644
--- a/indra/newview/lldrawpoolwlsky.cpp
+++ b/indra/newview/lldrawpoolwlsky.cpp
@@ -233,8 +233,7 @@ void LLDrawPoolWLSky::renderSkyClouds(F32 camHeightLocal) const
 	{
 		LLGLEnable blend(GL_BLEND);
 		gGL.setSceneBlendType(LLRender::BT_ALPHA);
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
-
+		
 		gGL.getTexUnit(0)->bind(sCloudNoiseTexture);
 
 		cloud_shader->bind();
diff --git a/indra/newview/llglsandbox.cpp b/indra/newview/llglsandbox.cpp
index 842911ecc0..fa3f546157 100644
--- a/indra/newview/llglsandbox.cpp
+++ b/indra/newview/llglsandbox.cpp
@@ -620,7 +620,7 @@ void LLViewerParcelMgr::renderCollisionSegments(U8* segments, BOOL use_pass, LLV
 	F32 pos_y = pos.mV[VY];
 
 	LLGLSUIDefault gls_ui;
-	LLGLDepthTest gls_depth(GL_TRUE);
+	LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE);
 	LLGLDisable cull(GL_CULL_FACE);
 	
 	if (mCollisionBanned == BA_BANNED)
diff --git a/indra/newview/llselectmgr.cpp b/indra/newview/llselectmgr.cpp
index 8fa4065fa6..26b2b0f5c3 100644
--- a/indra/newview/llselectmgr.cpp
+++ b/indra/newview/llselectmgr.cpp
@@ -5123,7 +5123,6 @@ void LLSelectMgr::renderSilhouettes(BOOL for_hud)
 
 	gGL.getTexUnit(0)->bind(mSilhouetteImagep);
 	LLGLSPipelineSelection gls_select;
-	gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.f);
 	LLGLEnable blend(GL_BLEND);
 	LLGLDepthTest gls_depth(GL_TRUE, GL_FALSE);
 
@@ -5250,7 +5249,6 @@ void LLSelectMgr::renderSilhouettes(BOOL for_hud)
 	}
 
 	gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 }
 
 void LLSelectMgr::generateSilhouette(LLSelectNode* nodep, const LLVector3& view_point)
diff --git a/indra/newview/llspatialpartition.cpp b/indra/newview/llspatialpartition.cpp
index e23b431457..fd17781a2e 100644
--- a/indra/newview/llspatialpartition.cpp
+++ b/indra/newview/llspatialpartition.cpp
@@ -523,6 +523,11 @@ void LLSpatialGroup::clearDrawMap()
 	mDrawMap.clear();
 }
 
+BOOL LLSpatialGroup::isHUDGroup() 
+{
+	return mSpatialPartition && mSpatialPartition->isHUDPartition() ; 
+}
+
 BOOL LLSpatialGroup::isRecentlyVisible() const
 {
 	return (LLDrawable::getCurrentFrame() - mVisible[LLViewerCamera::sCurCameraID]) < LLDrawable::getMinVisFrameRange() ;
@@ -4155,6 +4160,10 @@ void LLSpatialGroup::drawObjectBox(LLColor4 col)
 	drawBox(mObjectBounds[0], size);
 }
 
+bool LLSpatialPartition::isHUDPartition() 
+{ 
+	return mPartitionType == LLViewerRegion::PARTITION_HUD ;
+} 
 
 BOOL LLSpatialPartition::isVisible(const LLVector3& v)
 {
diff --git a/indra/newview/llspatialpartition.h b/indra/newview/llspatialpartition.h
index 54d5d36f6e..11955540c6 100644
--- a/indra/newview/llspatialpartition.h
+++ b/indra/newview/llspatialpartition.h
@@ -282,6 +282,7 @@ public:
 
 	LLSpatialGroup(OctreeNode* node, LLSpatialPartition* part);
 
+	BOOL isHUDGroup() ;
 	BOOL isDead()							{ return isState(DEAD); }
 	BOOL isState(U32 state) const;	
 	BOOL isOcclusionState(U32 state) const	{ return mOcclusionState[LLViewerCamera::sCurCameraID] & state ? TRUE : FALSE; }
@@ -470,6 +471,7 @@ public:
 	S32 cull(LLCamera &camera, std::vector<LLDrawable *>* results = NULL, BOOL for_select = FALSE); // Cull on arbitrary frustum
 	
 	BOOL isVisible(const LLVector3& v);
+	bool isHUDPartition() ;
 	
 	virtual LLSpatialBridge* asBridge() { return NULL; }
 	virtual BOOL isBridge() { return asBridge() != NULL; }
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 7991233ace..880b437404 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -2556,22 +2556,32 @@ void init_start_screen(S32 location_id)
 	else if(!start_image_bmp->load(temp_str) )
 	{
 		LL_WARNS("AppInit") << "Bitmap load failed" << LL_ENDL;
-		return;
+		gStartTexture = NULL;
 	}
+	else
+	{
+		gStartImageWidth = start_image_bmp->getWidth();
+		gStartImageHeight = start_image_bmp->getHeight();
 
-	gStartImageWidth = start_image_bmp->getWidth();
-	gStartImageHeight = start_image_bmp->getHeight();
+		LLPointer<LLImageRaw> raw = new LLImageRaw;
+		if (!start_image_bmp->decode(raw, 0.0f))
+		{
+			LL_WARNS("AppInit") << "Bitmap decode failed" << LL_ENDL;
+			gStartTexture = NULL;
+		}
+		else
+		{
+			raw->expandToPowerOfTwo();
+			gStartTexture = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE) ;
+		}
+	}
 
-	LLPointer<LLImageRaw> raw = new LLImageRaw;
-	if (!start_image_bmp->decode(raw, 0.0f))
+	if(gStartTexture.isNull())
 	{
-		LL_WARNS("AppInit") << "Bitmap decode failed" << LL_ENDL;
-		gStartTexture = NULL;
-		return;
+		gStartTexture = LLViewerTexture::sBlackImagep ;
+		gStartImageWidth = gStartTexture->getWidth() ;
+		gStartImageHeight = gStartTexture->getHeight() ;
 	}
-
-	raw->expandToPowerOfTwo();
-	gStartTexture = LLViewerTextureManager::getLocalTexture(raw.get(), FALSE) ;
 }
 
 
diff --git a/indra/newview/llviewerregion.cpp b/indra/newview/llviewerregion.cpp
index db2dc531db..17f908d73f 100644
--- a/indra/newview/llviewerregion.cpp
+++ b/indra/newview/llviewerregion.cpp
@@ -1193,6 +1193,7 @@ LLViewerRegion::eCacheUpdateResult LLViewerRegion::cacheFullUpdate(LLViewerObjec
 	eCacheUpdateResult result = CACHE_UPDATE_ADDED;
 	if (mImpl->mCacheMap.size() > MAX_OBJECT_CACHE_ENTRIES)
 	{
+		delete mImpl->mCacheMap.begin()->second ;
 		mImpl->mCacheMap.erase(mImpl->mCacheMap.begin());
 		result = CACHE_UPDATE_REPLACED;
 		
diff --git a/indra/newview/llviewershadermgr.cpp b/indra/newview/llviewershadermgr.cpp
index 62d83b516f..36106752a2 100644
--- a/indra/newview/llviewershadermgr.cpp
+++ b/indra/newview/llviewershadermgr.cpp
@@ -70,8 +70,12 @@ LLGLSLShader	gTwoTextureAddProgram;
 //object shaders
 LLGLSLShader		gObjectSimpleProgram;
 LLGLSLShader		gObjectSimpleWaterProgram;
+LLGLSLShader		gObjectSimpleAlphaMaskProgram;
+LLGLSLShader		gObjectSimpleWaterAlphaMaskProgram;
 LLGLSLShader		gObjectFullbrightProgram;
 LLGLSLShader		gObjectFullbrightWaterProgram;
+LLGLSLShader		gObjectFullbrightAlphaMaskProgram;
+LLGLSLShader		gObjectFullbrightWaterAlphaMaskProgram;
 LLGLSLShader		gObjectFullbrightShinyProgram;
 LLGLSLShader		gObjectFullbrightShinyWaterProgram;
 LLGLSLShader		gObjectShinyProgram;
@@ -80,6 +84,8 @@ LLGLSLShader		gObjectBumpProgram;
 
 LLGLSLShader		gObjectSimpleNonIndexedProgram;
 LLGLSLShader		gObjectSimpleNonIndexedWaterProgram;
+LLGLSLShader		gObjectAlphaMaskNonIndexedProgram;
+LLGLSLShader		gObjectAlphaMaskNonIndexedWaterProgram;
 LLGLSLShader		gObjectFullbrightNonIndexedProgram;
 LLGLSLShader		gObjectFullbrightNonIndexedWaterProgram;
 LLGLSLShader		gObjectFullbrightShinyNonIndexedProgram;
@@ -112,6 +118,7 @@ LLGLSLShader		gAvatarProgram;
 LLGLSLShader		gAvatarWaterProgram;
 LLGLSLShader		gAvatarEyeballProgram;
 LLGLSLShader		gAvatarPickProgram;
+LLGLSLShader		gImpostorProgram;
 
 // WindLight shader handles
 LLGLSLShader			gWLSkyProgram;
@@ -128,7 +135,9 @@ LLGLSLShader			gDeferredImpostorProgram;
 LLGLSLShader			gDeferredEdgeProgram;
 LLGLSLShader			gDeferredWaterProgram;
 LLGLSLShader			gDeferredDiffuseProgram;
+LLGLSLShader			gDeferredDiffuseAlphaMaskProgram;
 LLGLSLShader			gDeferredNonIndexedDiffuseProgram;
+LLGLSLShader			gDeferredNonIndexedDiffuseAlphaMaskProgram;
 LLGLSLShader			gDeferredSkinnedDiffuseProgram;
 LLGLSLShader			gDeferredSkinnedBumpProgram;
 LLGLSLShader			gDeferredSkinnedAlphaProgram;
@@ -145,6 +154,7 @@ LLGLSLShader			gDeferredSunProgram;
 LLGLSLShader			gDeferredBlurLightProgram;
 LLGLSLShader			gDeferredSoftenProgram;
 LLGLSLShader			gDeferredShadowProgram;
+LLGLSLShader			gDeferredShadowAlphaMaskProgram;
 LLGLSLShader			gDeferredAvatarShadowProgram;
 LLGLSLShader			gDeferredAttachmentShadowProgram;
 LLGLSLShader			gDeferredAlphaProgram;
@@ -177,6 +187,8 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gWaterProgram);
 	mShaderList.push_back(&gAvatarEyeballProgram); 
 	mShaderList.push_back(&gObjectSimpleProgram);
+	mShaderList.push_back(&gImpostorProgram);
+	mShaderList.push_back(&gObjectSimpleAlphaMaskProgram);
 	mShaderList.push_back(&gObjectBumpProgram);
 	mShaderList.push_back(&gUIProgram);
 	mShaderList.push_back(&gCustomAlphaProgram);
@@ -185,10 +197,13 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gSolidColorProgram);
 	mShaderList.push_back(&gOcclusionProgram);
 	mShaderList.push_back(&gObjectFullbrightProgram);
+	mShaderList.push_back(&gObjectFullbrightAlphaMaskProgram);
 	mShaderList.push_back(&gObjectFullbrightShinyProgram);
 	mShaderList.push_back(&gObjectFullbrightShinyWaterProgram);
 	mShaderList.push_back(&gObjectSimpleNonIndexedProgram);
 	mShaderList.push_back(&gObjectSimpleNonIndexedWaterProgram);
+	mShaderList.push_back(&gObjectAlphaMaskNonIndexedProgram);
+	mShaderList.push_back(&gObjectAlphaMaskNonIndexedWaterProgram);
 	mShaderList.push_back(&gObjectFullbrightNonIndexedProgram);
 	mShaderList.push_back(&gObjectFullbrightNonIndexedWaterProgram);
 	mShaderList.push_back(&gObjectFullbrightShinyNonIndexedProgram);
@@ -205,6 +220,8 @@ LLViewerShaderMgr::LLViewerShaderMgr() :
 	mShaderList.push_back(&gTerrainWaterProgram);
 	mShaderList.push_back(&gObjectSimpleWaterProgram);
 	mShaderList.push_back(&gObjectFullbrightWaterProgram);
+	mShaderList.push_back(&gObjectSimpleWaterAlphaMaskProgram);
+	mShaderList.push_back(&gObjectFullbrightWaterAlphaMaskProgram);
 	mShaderList.push_back(&gAvatarWaterProgram);
 	mShaderList.push_back(&gObjectShinyWaterProgram);
 	mShaderList.push_back(&gObjectShinyNonIndexedWaterProgram);
@@ -623,10 +640,15 @@ void LLViewerShaderMgr::unloadShaders()
 	gSolidColorProgram.unload();
 
 	gObjectSimpleProgram.unload();
+	gImpostorProgram.unload();
+	gObjectSimpleAlphaMaskProgram.unload();
 	gObjectBumpProgram.unload();
 	gObjectSimpleWaterProgram.unload();
+	gObjectSimpleWaterAlphaMaskProgram.unload();
 	gObjectFullbrightProgram.unload();
 	gObjectFullbrightWaterProgram.unload();
+	gObjectFullbrightAlphaMaskProgram.unload();
+	gObjectFullbrightWaterAlphaMaskProgram.unload();
 
 	gObjectShinyProgram.unload();
 	gObjectFullbrightShinyProgram.unload();
@@ -635,6 +657,8 @@ void LLViewerShaderMgr::unloadShaders()
 
 	gObjectSimpleNonIndexedProgram.unload();
 	gObjectSimpleNonIndexedWaterProgram.unload();
+	gObjectAlphaMaskNonIndexedProgram.unload();
+	gObjectAlphaMaskNonIndexedWaterProgram.unload();
 	gObjectFullbrightNonIndexedProgram.unload();
 	gObjectFullbrightNonIndexedWaterProgram.unload();
 
@@ -673,6 +697,8 @@ void LLViewerShaderMgr::unloadShaders()
 	gPostNightVisionProgram.unload();
 
 	gDeferredDiffuseProgram.unload();
+	gDeferredDiffuseAlphaMaskProgram.unload();
+	gDeferredNonIndexedDiffuseAlphaMaskProgram.unload();
 	gDeferredNonIndexedDiffuseProgram.unload();
 	gDeferredSkinnedDiffuseProgram.unload();
 	gDeferredSkinnedBumpProgram.unload();
@@ -766,17 +792,25 @@ BOOL LLViewerShaderMgr::loadBasicShaders()
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "windlight/transportF.glsl",				mVertexShaderLevel[SHADER_WINDLIGHT] ) );	
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "environment/waterFogF.glsl",				mVertexShaderLevel[SHADER_WATER] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightNonIndexedF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightAlphaMaskNonIndexedF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightNonIndexedF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightNonIndexedAlphaMaskF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightWaterNonIndexedF.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightWaterAlphaMaskNonIndexedF.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightWaterNonIndexedF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightWaterNonIndexedAlphaMaskF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightShinyNonIndexedF.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightShinyNonIndexedF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightShinyWaterNonIndexedF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(-1);	 shaders.push_back( make_pair( "lighting/lightFullbrightShinyWaterNonIndexedF.glsl", mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightAlphaMaskF.glsl",					mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightFullbrightF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightFullbrightAlphaMaskF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightWaterF.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightWaterAlphaMaskF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightFullbrightWaterF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
+	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightFullbrightWaterAlphaMaskF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightShinyF.glsl",				mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightFullbrightShinyF.glsl",	mVertexShaderLevel[SHADER_LIGHTING] ) );
 	index_channels.push_back(ch);	 shaders.push_back( make_pair( "lighting/lightShinyWaterF.glsl",			mVertexShaderLevel[SHADER_LIGHTING] ) );
@@ -1022,6 +1056,8 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 	{
 		gDeferredTreeProgram.unload();
 		gDeferredDiffuseProgram.unload();
+		gDeferredDiffuseAlphaMaskProgram.unload();
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.unload();
 		gDeferredNonIndexedDiffuseProgram.unload();
 		gDeferredSkinnedDiffuseProgram.unload();
 		gDeferredSkinnedBumpProgram.unload();
@@ -1037,6 +1073,7 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 		gDeferredBlurLightProgram.unload();
 		gDeferredSoftenProgram.unload();
 		gDeferredShadowProgram.unload();
+		gDeferredShadowAlphaMaskProgram.unload();
 		gDeferredAvatarShadowProgram.unload();
 		gDeferredAttachmentShadowProgram.unload();
 		gDeferredAvatarProgram.unload();
@@ -1077,6 +1114,27 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
+		gDeferredDiffuseAlphaMaskProgram.mName = "Deferred Diffuse Alpha Mask Shader";
+		gDeferredDiffuseAlphaMaskProgram.mShaderFiles.clear();
+		gDeferredDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskIndexedF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredDiffuseAlphaMaskProgram.mFeatures.mIndexedTextureChannels = gGLManager.mNumTextureImageUnits;
+		gDeferredDiffuseAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		success = gDeferredDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.mName = "Deferred Diffuse Non-Indexed Alpha Mask Shader";
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.clear();
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/diffuseAlphaMaskF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredNonIndexedDiffuseAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		success = gDeferredNonIndexedDiffuseAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gDeferredNonIndexedDiffuseProgram.mName = "Non Indexed Deferred Diffuse Shader";
 		gDeferredNonIndexedDiffuseProgram.mShaderFiles.clear();
 		gDeferredNonIndexedDiffuseProgram.mShaderFiles.push_back(make_pair("deferred/diffuseV.glsl", GL_VERTEX_SHADER_ARB));
@@ -1401,6 +1459,16 @@ BOOL LLViewerShaderMgr::loadShadersDeferred()
 
 	if (success)
 	{
+		gDeferredShadowAlphaMaskProgram.mName = "Deferred Shadow Alpha Mask Shader";
+		gDeferredShadowAlphaMaskProgram.mShaderFiles.clear();
+		gDeferredShadowAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/shadowAlphaMaskV.glsl", GL_VERTEX_SHADER_ARB));
+		gDeferredShadowAlphaMaskProgram.mShaderFiles.push_back(make_pair("deferred/shadowAlphaMaskF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gDeferredShadowAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_DEFERRED];
+		success = gDeferredShadowAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gDeferredAvatarShadowProgram.mName = "Deferred Avatar Shadow Shader";
 		gDeferredAvatarShadowProgram.mFeatures.hasSkinning = true;
 		gDeferredAvatarShadowProgram.mShaderFiles.clear();
@@ -1613,16 +1681,23 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 		gObjectFullbrightShinyWaterProgram.unload();
 		gObjectShinyWaterProgram.unload();
 		gObjectSimpleProgram.unload();
+		gImpostorProgram.unload();
+		gObjectSimpleAlphaMaskProgram.unload();
 		gObjectBumpProgram.unload();
 		gObjectSimpleWaterProgram.unload();
+		gObjectSimpleWaterAlphaMaskProgram.unload();
 		gObjectFullbrightProgram.unload();
+		gObjectFullbrightAlphaMaskProgram.unload();
 		gObjectFullbrightWaterProgram.unload();
+		gObjectFullbrightWaterAlphaMaskProgram.unload();
 		gObjectShinyNonIndexedProgram.unload();
 		gObjectFullbrightShinyNonIndexedProgram.unload();
 		gObjectFullbrightShinyNonIndexedWaterProgram.unload();
 		gObjectShinyNonIndexedWaterProgram.unload();
 		gObjectSimpleNonIndexedProgram.unload();
 		gObjectSimpleNonIndexedWaterProgram.unload();
+		gObjectAlphaMaskNonIndexedProgram.unload();
+		gObjectAlphaMaskNonIndexedWaterProgram.unload();
 		gObjectFullbrightNonIndexedProgram.unload();
 		gObjectFullbrightNonIndexedWaterProgram.unload();
 		gSkinnedObjectSimpleProgram.unload();
@@ -1672,6 +1747,41 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 
 	if (success)
 	{
+		gObjectAlphaMaskNonIndexedProgram.mName = "Non indexed alpha mask Shader";
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.calculatesLighting = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.hasGamma = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.hasAtmospherics = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.hasLighting = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.disableTextureIndex = true;
+		gObjectAlphaMaskNonIndexedProgram.mFeatures.hasAlphaMask = true;
+		gObjectAlphaMaskNonIndexedProgram.mShaderFiles.clear();
+		gObjectAlphaMaskNonIndexedProgram.mShaderFiles.push_back(make_pair("objects/simpleV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectAlphaMaskNonIndexedProgram.mShaderFiles.push_back(make_pair("objects/simpleF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectAlphaMaskNonIndexedProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		success = gObjectAlphaMaskNonIndexedProgram.createShader(NULL, NULL);
+	}
+	
+	if (success)
+	{
+		gObjectAlphaMaskNonIndexedWaterProgram.mName = "Non indexed alpha mask Water Shader";
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.calculatesLighting = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.hasWaterFog = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.hasAtmospherics = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.hasLighting = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.disableTextureIndex = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mFeatures.hasAlphaMask = true;
+		gObjectAlphaMaskNonIndexedWaterProgram.mShaderFiles.clear();
+		gObjectAlphaMaskNonIndexedWaterProgram.mShaderFiles.push_back(make_pair("objects/simpleV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectAlphaMaskNonIndexedWaterProgram.mShaderFiles.push_back(make_pair("objects/simpleWaterF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectAlphaMaskNonIndexedWaterProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		gObjectAlphaMaskNonIndexedWaterProgram.mShaderGroup = LLGLSLShader::SG_WATER;
+		success = gObjectAlphaMaskNonIndexedWaterProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gObjectFullbrightNonIndexedProgram.mName = "Non Indexed Fullbright Shader";
 		gObjectFullbrightNonIndexedProgram.mFeatures.calculatesAtmospherics = true;
 		gObjectFullbrightNonIndexedProgram.mFeatures.hasGamma = true;
@@ -1770,6 +1880,17 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 
 	if (success)
 	{
+		gImpostorProgram.mName = "Impostor Shader";
+		gImpostorProgram.mFeatures.disableTextureIndex = true;
+		gImpostorProgram.mShaderFiles.clear();
+		gImpostorProgram.mShaderFiles.push_back(make_pair("objects/impostorV.glsl", GL_VERTEX_SHADER_ARB));
+		gImpostorProgram.mShaderFiles.push_back(make_pair("objects/impostorF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gImpostorProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		success = gImpostorProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gObjectSimpleProgram.mName = "Simple Shader";
 		gObjectSimpleProgram.mFeatures.calculatesLighting = true;
 		gObjectSimpleProgram.mFeatures.calculatesAtmospherics = true;
@@ -1783,6 +1904,23 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 		gObjectSimpleProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
 		success = gObjectSimpleProgram.createShader(NULL, NULL);
 	}
+
+	if (success)
+	{
+		gObjectSimpleAlphaMaskProgram.mName = "Simple Alpha Mask Shader";
+		gObjectSimpleAlphaMaskProgram.mFeatures.calculatesLighting = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.hasGamma = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.hasAtmospherics = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.hasLighting = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.hasAlphaMask = true;
+		gObjectSimpleAlphaMaskProgram.mFeatures.mIndexedTextureChannels = 0;
+		gObjectSimpleAlphaMaskProgram.mShaderFiles.clear();
+		gObjectSimpleAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/simpleV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectSimpleAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/simpleF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectSimpleAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		success = gObjectSimpleAlphaMaskProgram.createShader(NULL, NULL);
+	}
 	
 	if (success)
 	{
@@ -1819,6 +1957,24 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 	
 	if (success)
 	{
+		gObjectSimpleWaterAlphaMaskProgram.mName = "Simple Water Alpha Mask Shader";
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.calculatesLighting = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.hasWaterFog = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.hasAtmospherics = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.hasLighting = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.hasAlphaMask = true;
+		gObjectSimpleWaterAlphaMaskProgram.mFeatures.mIndexedTextureChannels = 0;
+		gObjectSimpleWaterAlphaMaskProgram.mShaderFiles.clear();
+		gObjectSimpleWaterAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/simpleV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectSimpleWaterAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/simpleWaterF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectSimpleWaterAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		gObjectSimpleWaterAlphaMaskProgram.mShaderGroup = LLGLSLShader::SG_WATER;
+		success = gObjectSimpleWaterAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gObjectFullbrightProgram.mName = "Fullbright Shader";
 		gObjectFullbrightProgram.mFeatures.calculatesAtmospherics = true;
 		gObjectFullbrightProgram.mFeatures.hasGamma = true;
@@ -1850,6 +2006,39 @@ BOOL LLViewerShaderMgr::loadShadersObject()
 
 	if (success)
 	{
+		gObjectFullbrightAlphaMaskProgram.mName = "Fullbright Alpha Mask Shader";
+		gObjectFullbrightAlphaMaskProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectFullbrightAlphaMaskProgram.mFeatures.hasGamma = true;
+		gObjectFullbrightAlphaMaskProgram.mFeatures.hasTransport = true;
+		gObjectFullbrightAlphaMaskProgram.mFeatures.isFullbright = true;
+		gObjectFullbrightAlphaMaskProgram.mFeatures.hasAlphaMask = true;
+		gObjectFullbrightAlphaMaskProgram.mFeatures.mIndexedTextureChannels = 0;
+		gObjectFullbrightAlphaMaskProgram.mShaderFiles.clear();
+		gObjectFullbrightAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectFullbrightAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/fullbrightF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectFullbrightAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		success = gObjectFullbrightAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
+		gObjectFullbrightWaterAlphaMaskProgram.mName = "Fullbright Water Shader";
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.calculatesAtmospherics = true;
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.isFullbright = true;
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.hasWaterFog = true;		
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.hasTransport = true;
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.hasAlphaMask = true;
+		gObjectFullbrightWaterAlphaMaskProgram.mFeatures.mIndexedTextureChannels = 0;
+		gObjectFullbrightWaterAlphaMaskProgram.mShaderFiles.clear();
+		gObjectFullbrightWaterAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/fullbrightV.glsl", GL_VERTEX_SHADER_ARB));
+		gObjectFullbrightWaterAlphaMaskProgram.mShaderFiles.push_back(make_pair("objects/fullbrightWaterF.glsl", GL_FRAGMENT_SHADER_ARB));
+		gObjectFullbrightWaterAlphaMaskProgram.mShaderLevel = mVertexShaderLevel[SHADER_OBJECT];
+		gObjectFullbrightWaterAlphaMaskProgram.mShaderGroup = LLGLSLShader::SG_WATER;
+		success = gObjectFullbrightWaterAlphaMaskProgram.createShader(NULL, NULL);
+	}
+
+	if (success)
+	{
 		gObjectShinyProgram.mName = "Shiny Shader";
 		gObjectShinyProgram.mFeatures.calculatesAtmospherics = true;
 		gObjectShinyProgram.mFeatures.calculatesLighting = true;
@@ -2092,6 +2281,7 @@ BOOL LLViewerShaderMgr::loadShadersAvatar()
 		gAvatarProgram.mFeatures.hasGamma = true;
 		gAvatarProgram.mFeatures.hasAtmospherics = true;
 		gAvatarProgram.mFeatures.hasLighting = true;
+		gAvatarProgram.mFeatures.hasAlphaMask = true;
 		gAvatarProgram.mFeatures.disableTextureIndex = true;
 		gAvatarProgram.mShaderFiles.clear();
 		gAvatarProgram.mShaderFiles.push_back(make_pair("avatar/avatarV.glsl", GL_VERTEX_SHADER_ARB));
@@ -2108,6 +2298,7 @@ BOOL LLViewerShaderMgr::loadShadersAvatar()
 			gAvatarWaterProgram.mFeatures.hasWaterFog = true;
 			gAvatarWaterProgram.mFeatures.hasAtmospherics = true;
 			gAvatarWaterProgram.mFeatures.hasLighting = true;
+			gAvatarWaterProgram.mFeatures.hasAlphaMask = true;
 			gAvatarWaterProgram.mFeatures.disableTextureIndex = true;
 			gAvatarWaterProgram.mShaderFiles.clear();
 			gAvatarWaterProgram.mShaderFiles.push_back(make_pair("avatar/avatarV.glsl", GL_VERTEX_SHADER_ARB));
@@ -2146,6 +2337,7 @@ BOOL LLViewerShaderMgr::loadShadersAvatar()
 		gAvatarEyeballProgram.mFeatures.hasGamma = true;
 		gAvatarEyeballProgram.mFeatures.hasAtmospherics = true;
 		gAvatarEyeballProgram.mFeatures.hasLighting = true;
+		gAvatarEyeballProgram.mFeatures.hasAlphaMask = true;
 		gAvatarEyeballProgram.mFeatures.disableTextureIndex = true;
 		gAvatarEyeballProgram.mShaderFiles.clear();
 		gAvatarEyeballProgram.mShaderFiles.push_back(make_pair("avatar/eyeballV.glsl", GL_VERTEX_SHADER_ARB));
diff --git a/indra/newview/llviewershadermgr.h b/indra/newview/llviewershadermgr.h
index 93a0ecc4f0..d4040f11e1 100644
--- a/indra/newview/llviewershadermgr.h
+++ b/indra/newview/llviewershadermgr.h
@@ -297,11 +297,17 @@ extern LLGLSLShader			gTwoTextureAddProgram;
 								
 //object shaders
 extern LLGLSLShader			gObjectSimpleProgram;
+extern LLGLSLShader			gObjectSimpleAlphaMaskProgram;
 extern LLGLSLShader			gObjectSimpleWaterProgram;
+extern LLGLSLShader			gObjectSimpleWaterAlphaMaskProgram;
 extern LLGLSLShader			gObjectSimpleNonIndexedProgram;
 extern LLGLSLShader			gObjectSimpleNonIndexedWaterProgram;
+extern LLGLSLShader			gObjectAlphaMaskNonIndexedProgram;
+extern LLGLSLShader			gObjectAlphaMaskNonIndexedWaterProgram;
 extern LLGLSLShader			gObjectFullbrightProgram;
 extern LLGLSLShader			gObjectFullbrightWaterProgram;
+extern LLGLSLShader			gObjectFullbrightAlphaMaskProgram;
+extern LLGLSLShader			gObjectFullbrightWaterAlphaMaskProgram;
 extern LLGLSLShader			gObjectFullbrightNonIndexedProgram;
 extern LLGLSLShader			gObjectFullbrightNonIndexedWaterProgram;
 extern LLGLSLShader			gObjectBumpProgram;
@@ -345,6 +351,7 @@ extern LLGLSLShader			gAvatarProgram;
 extern LLGLSLShader			gAvatarWaterProgram;
 extern LLGLSLShader			gAvatarEyeballProgram;
 extern LLGLSLShader			gAvatarPickProgram;
+extern LLGLSLShader			gImpostorProgram;
 
 // WindLight shader handles
 extern LLGLSLShader			gWLSkyProgram;
@@ -359,6 +366,8 @@ extern LLGLSLShader			gDeferredImpostorProgram;
 extern LLGLSLShader			gDeferredEdgeProgram;
 extern LLGLSLShader			gDeferredWaterProgram;
 extern LLGLSLShader			gDeferredDiffuseProgram;
+extern LLGLSLShader			gDeferredDiffuseAlphaMaskProgram;
+extern LLGLSLShader			gDeferredNonIndexedDiffuseAlphaMaskProgram;
 extern LLGLSLShader			gDeferredNonIndexedDiffuseProgram;
 extern LLGLSLShader			gDeferredSkinnedDiffuseProgram;
 extern LLGLSLShader			gDeferredSkinnedBumpProgram;
@@ -377,6 +386,7 @@ extern LLGLSLShader			gDeferredBlurLightProgram;
 extern LLGLSLShader			gDeferredAvatarProgram;
 extern LLGLSLShader			gDeferredSoftenProgram;
 extern LLGLSLShader			gDeferredShadowProgram;
+extern LLGLSLShader			gDeferredShadowAlphaMaskProgram;
 extern LLGLSLShader			gDeferredPostGIProgram;
 extern LLGLSLShader			gDeferredPostProgram;
 extern LLGLSLShader			gDeferredPostNoDoFProgram;
diff --git a/indra/newview/llviewertexture.cpp b/indra/newview/llviewertexture.cpp
index 5fcc57bc91..70509f9a9f 100644
--- a/indra/newview/llviewertexture.cpp
+++ b/indra/newview/llviewertexture.cpp
@@ -66,6 +66,7 @@
 
 // statics
 LLPointer<LLViewerTexture>        LLViewerTexture::sNullImagep = NULL;
+LLPointer<LLViewerTexture>        LLViewerTexture::sBlackImagep = NULL;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sMissingAssetImagep = NULL;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sWhiteImagep = NULL;
 LLPointer<LLViewerFetchedTexture> LLViewerFetchedTexture::sDefaultImagep = NULL;
@@ -295,17 +296,23 @@ LLViewerFetchedTexture* LLViewerTextureManager::getFetchedTextureFromHost(const
 
 void LLViewerTextureManager::init()
 {
-	LLPointer<LLImageRaw> raw = new LLImageRaw(1,1,3);
-	raw->clear(0x77, 0x77, 0x77, 0xFF);
-	LLViewerTexture::sNullImagep = LLViewerTextureManager::getLocalTexture(raw.get(), TRUE) ;
-
-#if 1
-	LLPointer<LLViewerFetchedTexture> imagep = LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT);
-	LLViewerFetchedTexture::sDefaultImagep = imagep;
+	{
+		LLPointer<LLImageRaw> raw = new LLImageRaw(1,1,3);
+		raw->clear(0x77, 0x77, 0x77, 0xFF);
+		LLViewerTexture::sNullImagep = LLViewerTextureManager::getLocalTexture(raw.get(), TRUE) ;
+	}
 
 	const S32 dim = 128;
 	LLPointer<LLImageRaw> image_raw = new LLImageRaw(dim,dim,3);
 	U8* data = image_raw->getData();
+	
+	memset(data, 0, dim * dim * 3) ;
+	LLViewerTexture::sBlackImagep = LLViewerTextureManager::getLocalTexture(image_raw.get(), TRUE) ;
+
+#if 1
+	LLPointer<LLViewerFetchedTexture> imagep = LLViewerTextureManager::getFetchedTexture(IMG_DEFAULT);
+	LLViewerFetchedTexture::sDefaultImagep = imagep;
+	
 	for (S32 i = 0; i<dim; i++)
 	{
 		for (S32 j = 0; j<dim; j++)
@@ -359,6 +366,7 @@ void LLViewerTextureManager::cleanup()
 
 	LLImageGL::sDefaultGLTexture = NULL ;
 	LLViewerTexture::sNullImagep = NULL;
+	LLViewerTexture::sBlackImagep = NULL;
 	LLViewerFetchedTexture::sDefaultImagep = NULL;	
 	LLViewerFetchedTexture::sSmokeImagep = NULL;
 	LLViewerFetchedTexture::sMissingAssetImagep = NULL;
diff --git a/indra/newview/llviewertexture.h b/indra/newview/llviewertexture.h
index c5b8c8923a..de528927b4 100644
--- a/indra/newview/llviewertexture.h
+++ b/indra/newview/llviewertexture.h
@@ -330,6 +330,7 @@ public:
 	static BOOL sUseTextureAtlas ;
 
 	static LLPointer<LLViewerTexture> sNullImagep; // Null texture for non-textured objects.
+	static LLPointer<LLViewerTexture> sBlackImagep;	// Texture to show NOTHING (pure black)
 };
 
 
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index b5be3cd552..7946846222 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -4225,7 +4225,7 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 		bool should_alpha_mask = shouldAlphaMask();
 		LLGLState test(GL_ALPHA_TEST, should_alpha_mask);
 		
-		if (should_alpha_mask)
+		if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
 		{
 			gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
 		}
@@ -4254,7 +4254,10 @@ U32 LLVOAvatar::renderSkinned(EAvatarRenderPass pass)
 			}
 		}
 
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+		if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
+		{
+			gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+		}
 
 		if (!LLDrawPoolAvatar::sSkipTransparent || LLPipeline::sImpostorRender)
 		{
@@ -4337,7 +4340,7 @@ U32 LLVOAvatar::renderRigid()
 	bool should_alpha_mask = shouldAlphaMask();
 	LLGLState test(GL_ALPHA_TEST, should_alpha_mask);
 
-	if (should_alpha_mask)
+	if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
 	{
 		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.5f);
 	}
@@ -4348,7 +4351,10 @@ U32 LLVOAvatar::renderRigid()
 		num_indices += mMeshLOD[MESH_ID_EYEBALL_RIGHT]->render(mAdjustedPixelArea, TRUE, mIsDummy);
 	}
 
-	gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	if (should_alpha_mask && !LLGLSLShader::sNoFixedFunction)
+	{
+		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+	}
 	
 	return num_indices;
 }
diff --git a/indra/newview/llvocache.cpp b/indra/newview/llvocache.cpp
index f0b5b50feb..6d457434b5 100644
--- a/indra/newview/llvocache.cpp
+++ b/indra/newview/llvocache.cpp
@@ -621,16 +621,20 @@ void LLVOCache::readFromCache(U64 handle, const LLUUID& id, LLVOCacheEntry::voca
 				S32 num_entries;
 				success = check_read(&apr_file, &num_entries, sizeof(S32)) ;
 	
-				for (S32 i = 0; success && i < num_entries; i++)
+				if(success)
 				{
-					LLVOCacheEntry* entry = new LLVOCacheEntry(&apr_file);
-					if (!entry->getLocalID())
+					for (S32 i = 0; i < num_entries; i++)
 					{
-						llwarns << "Aborting cache file load for " << filename << ", cache file corruption!" << llendl;
-						delete entry ;
-						success = false ;
+						LLVOCacheEntry* entry = new LLVOCacheEntry(&apr_file);
+						if (!entry->getLocalID())
+						{
+							llwarns << "Aborting cache file load for " << filename << ", cache file corruption!" << llendl;
+							delete entry ;
+							success = false ;
+							break ;
+						}
+						cache_entry_map[entry->getLocalID()] = entry;
 					}
-					cache_entry_map[entry->getLocalID()] = entry;
 				}
 			}
 		}		
diff --git a/indra/newview/llvovolume.cpp b/indra/newview/llvovolume.cpp
index 30216f02db..528c7acbc8 100755
--- a/indra/newview/llvovolume.cpp
+++ b/indra/newview/llvovolume.cpp
@@ -704,19 +704,22 @@ BOOL LLVOVolume::isVisible() const
 	return FALSE ;
 }
 
-void LLVOVolume::updateTextureVirtualSize()
+void LLVOVolume::updateTextureVirtualSize(bool forced)
 {
 	LLFastTimer ftm(FTM_VOLUME_TEXTURES);
 	// Update the pixel area of all faces
 
-	if(!isVisible())
+	if(!forced)
 	{
-		return ;
-	}
+		if(!isVisible())
+		{
+			return ;
+		}
 
-	if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SIMPLE))
-	{
-		return;
+		if (!gPipeline.hasRenderType(LLPipeline::RENDER_TYPE_SIMPLE))
+		{
+			return;
+		}
 	}
 
 	static LLCachedControl<bool> dont_load_textures(gSavedSettings,"TextureDisable");
@@ -3998,7 +4001,7 @@ void LLVolumeGeometryManager::rebuildGeom(LLSpatialGroup* group)
 		}
 
 		llassert_always(vobj);
-		vobj->updateTextureVirtualSize();
+		vobj->updateTextureVirtualSize(true);
 		vobj->preRebuild();
 
 		drawablep->clearState(LLDrawable::HAS_ALPHA);
@@ -4487,6 +4490,7 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 		std::sort(faces.begin(), faces.end(), LLFace::CompareDistanceGreater());
 	}
 				
+	bool hud_group = group->isHUDGroup() ;
 	std::vector<LLFace*>::iterator face_iter = faces.begin();
 	
 	LLSpatialGroup::buffer_map_t buffer_map;
@@ -4757,7 +4761,7 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 					registerFace(group, facep, LLRenderPass::PASS_INVISI_SHINY);
 					registerFace(group, facep, LLRenderPass::PASS_INVISIBLE);
 				}
-				else if (LLPipeline::sRenderDeferred)
+				else if (LLPipeline::sRenderDeferred && !hud_group)
 				{ //deferred rendering
 					if (te->getFullbright())
 					{ //register in post deferred fullbright shiny pass
@@ -4795,7 +4799,7 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 				else if (fullbright || bake_sunlight)
 				{ //fullbright
 					registerFace(group, facep, LLRenderPass::PASS_FULLBRIGHT);
-					if (LLPipeline::sRenderDeferred && LLPipeline::sRenderBump && te->getBumpmap())
+					if (LLPipeline::sRenderDeferred && !hud_group && LLPipeline::sRenderBump && te->getBumpmap())
 					{ //if this is the deferred render and a bump map is present, register in post deferred bump
 						registerFace(group, facep, LLRenderPass::PASS_POST_BUMP);
 					}
@@ -4821,7 +4825,7 @@ void LLVolumeGeometryManager::genDrawInfo(LLSpatialGroup* group, U32 mask, std::
 			}
 			
 			//not sure why this is here, and looks like it might cause bump mapped objects to get rendered redundantly -- davep 5/11/2010
-			if (!is_alpha && !LLPipeline::sRenderDeferred)
+			if (!is_alpha && (hud_group || !LLPipeline::sRenderDeferred))
 			{
 				llassert((mask & LLVertexBuffer::MAP_NORMAL) || fullbright);
 				facep->setPoolType((fullbright) ? LLDrawPool::POOL_FULLBRIGHT : LLDrawPool::POOL_SIMPLE);
diff --git a/indra/newview/llvovolume.h b/indra/newview/llvovolume.h
index fc00f0c0d0..13565cb27c 100644
--- a/indra/newview/llvovolume.h
+++ b/indra/newview/llvovolume.h
@@ -206,7 +206,7 @@ public:
 	/*virtual*/ BOOL	updateLOD();
 				void	updateRadius();
 	/*virtual*/ void	updateTextures();
-				void	updateTextureVirtualSize();
+				void	updateTextureVirtualSize(bool forced = false);
 
 				void	updateFaceFlags();
 				void	regenFaces();
diff --git a/indra/newview/pipeline.cpp b/indra/newview/pipeline.cpp
index 4899df13e5..7a26404138 100644
--- a/indra/newview/pipeline.cpp
+++ b/indra/newview/pipeline.cpp
@@ -3340,13 +3340,15 @@ void render_hud_elements()
 	glStencilOp(GL_KEEP, GL_KEEP, GL_REPLACE);
 	
 	gGL.color4f(1,1,1,1);
-	if (!LLPipeline::sReflectionRender && gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
+	
+	if (LLGLSLShader::sNoFixedFunction)
 	{
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gUIProgram.bind();
-		}
+		gUIProgram.bind();
+	}
+	LLGLDepthTest depth(GL_TRUE, GL_FALSE);
 
+	if (!LLPipeline::sReflectionRender && gPipeline.hasRenderDebugFeatureMask(LLPipeline::RENDER_DEBUG_FEATURE_UI))
+	{
 		LLGLEnable multisample(gSavedSettings.getU32("RenderFSAASamples") > 0 ? GL_MULTISAMPLE_ARB : 0);
 		gViewerWindow->renderSelections(FALSE, FALSE, FALSE); // For HUD version in render_ui_3d()
 	
@@ -3360,10 +3362,6 @@ void render_hud_elements()
 	
 		// Render name tags.
 		LLHUDObject::renderAll();
-		if (LLGLSLShader::sNoFixedFunction)
-		{
-			gUIProgram.unbind();
-		}
 	}
 	else if (gForceRenderLandFence)
 	{
@@ -3374,6 +3372,11 @@ void render_hud_elements()
 	{
 		LLHUDText::renderAllHUD();
 	}
+
+	if (LLGLSLShader::sNoFixedFunction)
+	{
+		gUIProgram.unbind();
+	}
 	gGL.flush();
 }
 
@@ -3669,6 +3672,7 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 				occlude = FALSE;
 				gGLLastMatrix = NULL;
 				glLoadMatrixd(gGLModelView);
+				LLGLSLShader::bindNoShader();
 				doOcclusion(camera);
 			}
 
@@ -3734,6 +3738,7 @@ void LLPipeline::renderGeom(LLCamera& camera, BOOL forceVBOUpdate)
 			occlude = FALSE;
 			gGLLastMatrix = NULL;
 			glLoadMatrixd(gGLModelView);
+			LLGLSLShader::bindNoShader();
 			doOcclusion(camera);
 		}
 	}
@@ -3934,6 +3939,7 @@ void LLPipeline::renderGeomPostDeferred(LLCamera& camera)
 			occlude = FALSE;
 			gGLLastMatrix = NULL;
 			glLoadMatrixd(gGLModelView);
+			LLGLSLShader::bindNoShader();
 			doOcclusion(camera);
 			gGL.setColorMask(true, false);
 		}
@@ -3999,6 +4005,7 @@ void LLPipeline::renderGeomPostDeferred(LLCamera& camera)
 		occlude = FALSE;
 		gGLLastMatrix = NULL;
 		glLoadMatrixd(gGLModelView);
+		LLGLSLShader::bindNoShader();
 		doOcclusion(camera);
 		gGLLastMatrix = NULL;
 		glLoadMatrixd(gGLModelView);
@@ -6182,7 +6189,7 @@ void LLPipeline::renderBloom(BOOL for_snapshot, F32 zoom_factor, int subfield)
 		gGlowExtractProgram.uniform1f("warmthAmount", warmthAmount);
 		LLGLEnable blend_on(GL_BLEND);
 		LLGLEnable test(GL_ALPHA_TEST);
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
+		
 		gGL.setSceneBlendType(LLRender::BT_ADD_WITH_ALPHA);
 		
 		mScreen.bindTexture(0, 0);
@@ -8252,7 +8259,6 @@ void LLPipeline::renderShadow(glh::matrix4f& view, glh::matrix4f& proj, LLCamera
 			gOcclusionProgram.bind();
 		}
 		LLFastTimer ftm(FTM_SHADOW_SIMPLE);
-		LLGLDisable test(GL_ALPHA_TEST);
 		gGL.getTexUnit(0)->disable();
 		for (U32 i = 0; i < sizeof(types)/sizeof(U32); ++i)
 		{
@@ -8278,12 +8284,11 @@ void LLPipeline::renderShadow(glh::matrix4f& view, glh::matrix4f& proj, LLCamera
 
 	{
 		LLFastTimer ftm(FTM_SHADOW_ALPHA);
-		LLGLEnable test(GL_ALPHA_TEST);
-		gGL.setAlphaRejectSettings(LLRender::CF_GREATER, 0.6f);
+		gDeferredShadowAlphaMaskProgram.bind();
+		gDeferredShadowAlphaMaskProgram.setAlphaRange(0.6f, 1.f);
 		renderObjects(LLRenderPass::PASS_ALPHA_SHADOW, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0 | LLVertexBuffer::MAP_COLOR, TRUE);
 		glColor4f(1,1,1,1);
 		renderObjects(LLRenderPass::PASS_GRASS, LLVertexBuffer::MAP_VERTEX | LLVertexBuffer::MAP_TEXCOORD0, TRUE);
-		gGL.setAlphaRejectSettings(LLRender::CF_DEFAULT);
 	}
 
 	//glCullFace(GL_BACK);
@@ -8768,6 +8773,7 @@ void LLPipeline::generateSunShadow(LLCamera& camera)
 					LLPipeline::RENDER_TYPE_WATER,
 					LLPipeline::RENDER_TYPE_VOIDWATER,
 					LLPipeline::RENDER_TYPE_PASS_ALPHA_SHADOW,
+					LLPipeline::RENDER_TYPE_PASS_GRASS,
 					LLPipeline::RENDER_TYPE_PASS_SIMPLE,
 					LLPipeline::RENDER_TYPE_PASS_BUMP,
 					LLPipeline::RENDER_TYPE_PASS_FULLBRIGHT,