From ff7e83c3aa26bbaa380305a97dffbf22c0f7a747 Mon Sep 17 00:00:00 2001
From: Tofu Linden <tofu.linden@lindenlab.com>
Date: Fri, 14 May 2010 16:36:39 +0100
Subject: EXT-7154 FIXED revisted: darkness bumpmap looks like lightness
 bumpmap when deferred rendering is enabled

In addition to the previous bugs, the normal-map for *all* bumpmaps was also getting generated with its Y-gradient flipped, causing some odd and inconsistent results.
---
 indra/newview/lldrawpoolbump.cpp  | 23 ++++++++++++++++-------
 indra/newview/lldrawpoolbump.h    |  5 ++++-
 indra/newview/llviewercontrol.cpp |  4 +++-
 3 files changed, 23 insertions(+), 9 deletions(-)

(limited to 'indra/newview')

diff --git a/indra/newview/lldrawpoolbump.cpp b/indra/newview/lldrawpoolbump.cpp
index a3b236fcb9..3c26809259 100644
--- a/indra/newview/lldrawpoolbump.cpp
+++ b/indra/newview/lldrawpoolbump.cpp
@@ -93,6 +93,12 @@ void LLStandardBumpmap::shutdown()
 
 // static 
 void LLStandardBumpmap::restoreGL()
+{
+	addstandard();
+}
+
+// static
+void LLStandardBumpmap::addstandard()
 {
 	llassert( LLStandardBumpmap::sStandardBumpmapCount == 0 );
 	gStandardBumpmapList[LLStandardBumpmap::sStandardBumpmapCount++] = LLStandardBumpmap("None");		// BE_NO_BUMP
@@ -156,7 +162,7 @@ void LLStandardBumpmap::restoreGL()
 }
 
 // static
-void LLStandardBumpmap::destroyGL()
+void LLStandardBumpmap::clear()
 {
 	for( U32 i = 0; i < LLStandardBumpmap::sStandardBumpmapCount; i++ )
 	{
@@ -166,6 +172,12 @@ void LLStandardBumpmap::destroyGL()
 	sStandardBumpmapCount = 0;
 }
 
+// static
+void LLStandardBumpmap::destroyGL()
+{
+	clear();
+}
+
 
 
 ////////////////////////////////////////////////////////////////
@@ -1044,8 +1056,8 @@ void LLBumpImageList::generateNormalMapFromAlpha(LLImageRaw* src, LLImageRaw* nr
 
 			LLVector3 right = LLVector3(norm_scale, 0, (F32) src_data[(j*resX+rX)*src_cmp+src_cmp-1]-cH);
 			LLVector3 left = LLVector3(-norm_scale, 0, (F32) src_data[(j*resX+lX)*src_cmp+src_cmp-1]-cH);
-			LLVector3 up = LLVector3(0, -norm_scale, (F32) src_data[(rY*resX+i)*src_cmp+src_cmp-1]-cH);
-			LLVector3 down = LLVector3(0, norm_scale, (F32) src_data[(lY*resX+i)*src_cmp+src_cmp-1]-cH);
+			LLVector3 up = LLVector3(0, -norm_scale, (F32) src_data[(lY*resX+i)*src_cmp+src_cmp-1]-cH);
+			LLVector3 down = LLVector3(0, norm_scale, (F32) src_data[(rY*resX+i)*src_cmp+src_cmp-1]-cH);
 
 			LLVector3 norm = right%down + down%left + left%up + up%right;
 		
@@ -1155,11 +1167,8 @@ void LLBumpImageList::onSourceLoaded( BOOL success, LLViewerTexture *src_vi, LLI
 				F32 twice_one_over_range = 2.f / (maximum - minimum);
 				S32 i;
 
-				bool bump_polarity_negative = LLPipeline::sRenderDeferred ?
-					(BE_BRIGHTNESS == bump_code) : (BE_DARKNESS == bump_code); // deferred mode likes its normal map values inverted
-
 				const F32 ARTIFICIAL_SCALE = 2.f;  // Advantage: exaggerates the effect in midrange.  Disadvantage: clamps at the extremes.
-				if (bump_polarity_negative)
+				if (BE_DARKNESS == bump_code)
 				{
 					for( i = minimum; i <= maximum; i++ )
 					{
diff --git a/indra/newview/lldrawpoolbump.h b/indra/newview/lldrawpoolbump.h
index 219e2aac54..07846c2812 100644
--- a/indra/newview/lldrawpoolbump.h
+++ b/indra/newview/lldrawpoolbump.h
@@ -115,9 +115,12 @@ public:
 
 	static	U32 sStandardBumpmapCount;  // Number of valid values in gStandardBumpmapList[]
 
+	static void clear();
+	static void addstandard();
+
 	static void init();
 	static void shutdown();
-	static void	restoreGL();
+	static void restoreGL();
 	static void destroyGL();
 };
 
diff --git a/indra/newview/llviewercontrol.cpp b/indra/newview/llviewercontrol.cpp
index e856c18d70..d9f128b878 100644
--- a/indra/newview/llviewercontrol.cpp
+++ b/indra/newview/llviewercontrol.cpp
@@ -119,8 +119,10 @@ static bool handleTerrainDetailChanged(const LLSD& newvalue)
 
 static bool handleSetShaderChanged(const LLSD& newvalue)
 {
-	// changing shader level may invalidate existing cached ad-hoc bump maps, as the shader type determines the format of the bump map it expectes - clear the bump cache
+	// changing shader level may invalidate existing cached bump maps, as the shader type determines the format of the bump map it expects - clear the bump cache
 	gBumpImageList.clear();
+	LLStandardBumpmap::clear();
+	LLStandardBumpmap::addstandard();
 
 	LLViewerShaderMgr::instance()->setShaders();
 	return true;
-- 
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