diff --git a/Makefile b/Makefile
index e85e1b8c..9d9757a5 100644
--- a/Makefile
+++ b/Makefile
@@ -348,11 +348,11 @@ ifneq (,$(findstring "$(PLATFORM)", "linux" "gnu_kfreebsd" "kfreebsd-gnu" "gnu")
     HAVE_VM_COMPILED=true
   else
   ifeq ($(ARCH),ppc)
-    BASE_CFLAGS += -maltivec
+    ALTIVEC_CFLAGS = -maltivec
     HAVE_VM_COMPILED=true
   endif
   ifeq ($(ARCH),ppc64)
-    BASE_CFLAGS += -maltivec
+    ALTIVEC_CFLAGS = -maltivec
     HAVE_VM_COMPILED=true
   endif
   ifeq ($(ARCH),sparc)
@@ -440,10 +440,12 @@ ifeq ($(PLATFORM),darwin)
                  -DMAC_OS_X_VERSION_MIN_REQUIRED=$(MAC_OS_X_VERSION_MIN_REQUIRED)
 
   ifeq ($(ARCH),ppc)
-    BASE_CFLAGS += -arch ppc -faltivec
+    BASE_CFLAGS += -arch ppc
+    ALTIVEC_CFLAGS = -faltivec
   endif
   ifeq ($(ARCH),ppc64)
-    BASE_CFLAGS += -arch ppc64 -faltivec
+    BASE_CFLAGS += -arch ppc64
+    ALTIVEC_CFLAGS = -faltivec
   endif
   ifeq ($(ARCH),x86)
     OPTIMIZEVM += -march=prescott -mfpmath=sse
@@ -1189,11 +1191,21 @@ $(echo_cmd) "CC $<"
 $(Q)$(CC) $(NOTSHLIBCFLAGS) $(CFLAGS) $(CLIENT_CFLAGS) $(OPTIMIZE) -o $@ -c $<
 endef
 
+define DO_CC_ALTIVEC
+$(echo_cmd) "CC $<"
+$(Q)$(CC) $(NOTSHLIBCFLAGS) $(CFLAGS) $(CLIENT_CFLAGS) $(OPTIMIZE) $(ALTIVEC_CFLAGS) -o $@ -c $<
+endef
+
 define DO_REF_CC
 $(echo_cmd) "REF_CC $<"
 $(Q)$(CC) $(SHLIBCFLAGS) $(CFLAGS) $(CLIENT_CFLAGS) $(OPTIMIZE) -o $@ -c $<
 endef
 
+define DO_REF_CC_ALTIVEC
+$(echo_cmd) "REF_CC $<"
+$(Q)$(CC) $(SHLIBCFLAGS) $(CFLAGS) $(CLIENT_CFLAGS) $(OPTIMIZE) $(ALTIVEC_CFLAGS) -o $@ -c $<
+endef
+
 define DO_REF_STR
 $(echo_cmd) "REF_STR $<"
 $(Q)rm -f $@
@@ -1664,6 +1676,7 @@ Q3OBJ = \
   $(B)/client/net_ip.o \
   $(B)/client/huffman.o \
   \
+  $(B)/client/snd_altivec.o \
   $(B)/client/snd_adpcm.o \
   $(B)/client/snd_dma.o \
   $(B)/client/snd_mem.o \
@@ -1817,6 +1830,7 @@ Q3R2STRINGOBJ = \
   $(B)/renderergl2/glsl/tonemap_vp.o
 
 Q3ROBJ = \
+  $(B)/renderergl1/tr_altivec.o \
   $(B)/renderergl1/tr_animation.o \
   $(B)/renderergl1/tr_backend.o \
   $(B)/renderergl1/tr_bsp.o \
@@ -2627,6 +2641,9 @@ $(B)/client/%.o: $(ASMDIR)/%.s
 $(B)/client/%.o: $(ASMDIR)/%.c
 	$(DO_CC) -march=k8
 
+$(B)/client/snd_altivec.o: $(CDIR)/snd_altivec.c
+	$(DO_CC_ALTIVEC)
+
 $(B)/client/%.o: $(CDIR)/%.c
 	$(DO_CC)
 
@@ -2691,6 +2708,9 @@ $(B)/renderergl1/%.o: $(RCOMMONDIR)/%.c
 $(B)/renderergl1/%.o: $(RGL1DIR)/%.c
 	$(DO_REF_CC)
 
+$(B)/renderergl1/tr_altivec.o: $(RGL1DIR)/tr_altivec.c
+	$(DO_REF_CC_ALTIVEC)
+
 $(B)/renderergl2/glsl/%.c: $(RGL2DIR)/glsl/%.glsl
 	$(DO_REF_STR)
 
diff --git a/code/client/snd_altivec.c b/code/client/snd_altivec.c
new file mode 100644
index 00000000..e051dda9
--- /dev/null
+++ b/code/client/snd_altivec.c
@@ -0,0 +1,229 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+/* This file is only compiled for PowerPC builds with Altivec support.
+   Altivec intrinsics need to be in a separate file, so GCC's -maltivec
+   command line can enable them, but give us the option to _not_ use that
+   on other files, where the compiler might then generate Altivec
+   instructions for normal floating point, crashing on G3 (etc) processors. */
+
+#include "client.h"
+#include "snd_local.h"
+
+#if idppc_altivec
+
+#if !defined(__APPLE__)
+#include <altivec.h>
+#endif
+
+void S_PaintChannelFrom16_altivec( portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE], int snd_vol, channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
+	int						data, aoff, boff;
+	int						leftvol, rightvol;
+	int						i, j;
+	portable_samplepair_t	*samp;
+	sndBuffer				*chunk;
+	short					*samples;
+	float					ooff, fdata[2], fdiv, fleftvol, frightvol;
+
+	if (sc->soundChannels <= 0) {
+		return;
+	}
+
+	samp = &paintbuffer[ bufferOffset ];
+
+	if (ch->doppler) {
+		sampleOffset = sampleOffset*ch->oldDopplerScale;
+	}
+
+	if ( sc->soundChannels == 2 ) {
+		sampleOffset *= sc->soundChannels;
+
+		if ( sampleOffset & 1 ) {
+			sampleOffset &= ~1;
+		}
+	}
+
+	chunk = sc->soundData;
+	while (sampleOffset>=SND_CHUNK_SIZE) {
+		chunk = chunk->next;
+		sampleOffset -= SND_CHUNK_SIZE;
+		if (!chunk) {
+			chunk = sc->soundData;
+		}
+	}
+
+	if (!ch->doppler || ch->dopplerScale==1.0f) {
+		vector signed short volume_vec;
+		vector unsigned int volume_shift;
+		int vectorCount, samplesLeft, chunkSamplesLeft;
+		leftvol = ch->leftvol*snd_vol;
+		rightvol = ch->rightvol*snd_vol;
+		samples = chunk->sndChunk;
+		((short *)&volume_vec)[0] = leftvol;
+		((short *)&volume_vec)[1] = leftvol;
+		((short *)&volume_vec)[4] = leftvol;
+		((short *)&volume_vec)[5] = leftvol;
+		((short *)&volume_vec)[2] = rightvol;
+		((short *)&volume_vec)[3] = rightvol;
+		((short *)&volume_vec)[6] = rightvol;
+		((short *)&volume_vec)[7] = rightvol;
+		volume_shift = vec_splat_u32(8);
+		i = 0;
+
+		while(i < count) {
+			/* Try to align destination to 16-byte boundary */
+			while(i < count && (((unsigned long)&samp[i] & 0x1f) || ((count-i) < 8) || ((SND_CHUNK_SIZE - sampleOffset) < 8))) {
+				data  = samples[sampleOffset++];
+				samp[i].left += (data * leftvol)>>8;
+
+				if ( sc->soundChannels == 2 ) {
+					data = samples[sampleOffset++];
+				}
+				samp[i].right += (data * rightvol)>>8;
+	
+				if (sampleOffset == SND_CHUNK_SIZE) {
+					chunk = chunk->next;
+					samples = chunk->sndChunk;
+					sampleOffset = 0;
+				}
+				i++;
+			}
+			/* Destination is now aligned.  Process as many 8-sample 
+			   chunks as we can before we run out of room from the current
+			   sound chunk.  We do 8 per loop to avoid extra source data reads. */
+			samplesLeft = count - i;
+			chunkSamplesLeft = SND_CHUNK_SIZE - sampleOffset;
+			if(samplesLeft > chunkSamplesLeft)
+				samplesLeft = chunkSamplesLeft;
+			
+			vectorCount = samplesLeft / 8;
+			
+			if(vectorCount)
+			{
+				vector unsigned char tmp;
+				vector short s0, s1, sampleData0, sampleData1;
+				vector signed int merge0, merge1;
+				vector signed int d0, d1, d2, d3;				
+				vector unsigned char samplePermute0 =
+					VECCONST_UINT8(0, 1, 4, 5, 0, 1, 4, 5, 2, 3, 6, 7, 2, 3, 6, 7);
+				vector unsigned char samplePermute1 = 
+					VECCONST_UINT8(8, 9, 12, 13, 8, 9, 12, 13, 10, 11, 14, 15, 10, 11, 14, 15);
+				vector unsigned char loadPermute0, loadPermute1;
+				
+				// Rather than permute the vectors after we load them to do the sample
+				// replication and rearrangement, we permute the alignment vector so
+				// we do everything in one step below and avoid data shuffling.
+				tmp = vec_lvsl(0,&samples[sampleOffset]);								
+				loadPermute0 = vec_perm(tmp,tmp,samplePermute0);
+				loadPermute1 = vec_perm(tmp,tmp,samplePermute1);
+				
+				s0 = *(vector short *)&samples[sampleOffset];
+				while(vectorCount)
+				{
+					/* Load up source (16-bit) sample data */
+					s1 = *(vector short *)&samples[sampleOffset+7];
+					
+					/* Load up destination sample data */
+					d0 = *(vector signed int *)&samp[i];
+					d1 = *(vector signed int *)&samp[i+2];
+					d2 = *(vector signed int *)&samp[i+4];
+					d3 = *(vector signed int *)&samp[i+6];
+
+					sampleData0 = vec_perm(s0,s1,loadPermute0);
+					sampleData1 = vec_perm(s0,s1,loadPermute1);
+					
+					merge0 = vec_mule(sampleData0,volume_vec);
+					merge0 = vec_sra(merge0,volume_shift);	/* Shift down to proper range */
+					
+					merge1 = vec_mulo(sampleData0,volume_vec);
+					merge1 = vec_sra(merge1,volume_shift);
+					
+					d0 = vec_add(merge0,d0);
+					d1 = vec_add(merge1,d1);
+					
+					merge0 = vec_mule(sampleData1,volume_vec);
+					merge0 = vec_sra(merge0,volume_shift);	/* Shift down to proper range */
+					
+					merge1 = vec_mulo(sampleData1,volume_vec);
+					merge1 = vec_sra(merge1,volume_shift);					
+
+					d2 = vec_add(merge0,d2);
+					d3 = vec_add(merge1,d3);
+
+					/* Store destination sample data */
+					*(vector signed int *)&samp[i] = d0;
+					*(vector signed int *)&samp[i+2] = d1;
+					*(vector signed int *)&samp[i+4] = d2;
+					*(vector signed int *)&samp[i+6] = d3;
+
+					i += 8;
+					vectorCount--;
+					s0 = s1;
+					sampleOffset += 8;
+				}
+				if (sampleOffset == SND_CHUNK_SIZE) {
+					chunk = chunk->next;
+					samples = chunk->sndChunk;
+					sampleOffset = 0;
+				}
+			}
+		}
+	} else {
+		fleftvol = ch->leftvol*snd_vol;
+		frightvol = ch->rightvol*snd_vol;
+
+		ooff = sampleOffset;
+		samples = chunk->sndChunk;
+		
+		for ( i=0 ; i<count ; i++ ) {
+
+			aoff = ooff;
+			ooff = ooff + ch->dopplerScale * sc->soundChannels;
+			boff = ooff;
+			fdata[0] = fdata[1] = 0;
+			for (j=aoff; j<boff; j += sc->soundChannels) {
+				if (j == SND_CHUNK_SIZE) {
+					chunk = chunk->next;
+					if (!chunk) {
+						chunk = sc->soundData;
+					}
+					samples = chunk->sndChunk;
+					ooff -= SND_CHUNK_SIZE;
+				}
+				if ( sc->soundChannels == 2 ) {
+					fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
+					fdata[1] += samples[(j+1)&(SND_CHUNK_SIZE-1)];
+				} else {
+					fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
+					fdata[1] += samples[j&(SND_CHUNK_SIZE-1)];
+				}
+			}
+			fdiv = 256 * (boff-aoff) / sc->soundChannels;
+			samp[i].left += (fdata[0] * fleftvol)/fdiv;
+			samp[i].right += (fdata[1] * frightvol)/fdiv;
+		}
+	}
+}
+
+
+#endif
+
diff --git a/code/client/snd_local.h b/code/client/snd_local.h
index dc56f1bc..3b86d974 100644
--- a/code/client/snd_local.h
+++ b/code/client/snd_local.h
@@ -264,3 +264,7 @@ typedef enum
 typedef int srcHandle_t;
 
 qboolean S_AL_Init( soundInterface_t *si );
+
+#ifdef idppc_altivec
+void S_PaintChannelFrom16_altivec( portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE], int snd_vol, channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset );
+#endif
diff --git a/code/client/snd_mix.c b/code/client/snd_mix.c
index 99fe03c5..af0ba44a 100644
--- a/code/client/snd_mix.c
+++ b/code/client/snd_mix.c
@@ -23,9 +23,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
 #include "client.h"
 #include "snd_local.h"
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 static portable_samplepair_t paintbuffer[PAINTBUFFER_SIZE];
 static int snd_vol;
@@ -241,197 +238,6 @@ CHANNEL MIXING
 ===============================================================================
 */
 
-#if idppc_altivec
-static void S_PaintChannelFrom16_altivec( channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
-	int						data, aoff, boff;
-	int						leftvol, rightvol;
-	int						i, j;
-	portable_samplepair_t	*samp;
-	sndBuffer				*chunk;
-	short					*samples;
-	float					ooff, fdata[2], fdiv, fleftvol, frightvol;
-
-	if (sc->soundChannels <= 0) {
-		return;
-	}
-
-	samp = &paintbuffer[ bufferOffset ];
-
-	if (ch->doppler) {
-		sampleOffset = sampleOffset*ch->oldDopplerScale;
-	}
-
-	if ( sc->soundChannels == 2 ) {
-		sampleOffset *= sc->soundChannels;
-
-		if ( sampleOffset & 1 ) {
-			sampleOffset &= ~1;
-		}
-	}
-
-	chunk = sc->soundData;
-	while (sampleOffset>=SND_CHUNK_SIZE) {
-		chunk = chunk->next;
-		sampleOffset -= SND_CHUNK_SIZE;
-		if (!chunk) {
-			chunk = sc->soundData;
-		}
-	}
-
-	if (!ch->doppler || ch->dopplerScale==1.0f) {
-		vector signed short volume_vec;
-		vector unsigned int volume_shift;
-		int vectorCount, samplesLeft, chunkSamplesLeft;
-		leftvol = ch->leftvol*snd_vol;
-		rightvol = ch->rightvol*snd_vol;
-		samples = chunk->sndChunk;
-		((short *)&volume_vec)[0] = leftvol;
-		((short *)&volume_vec)[1] = leftvol;
-		((short *)&volume_vec)[4] = leftvol;
-		((short *)&volume_vec)[5] = leftvol;
-		((short *)&volume_vec)[2] = rightvol;
-		((short *)&volume_vec)[3] = rightvol;
-		((short *)&volume_vec)[6] = rightvol;
-		((short *)&volume_vec)[7] = rightvol;
-		volume_shift = vec_splat_u32(8);
-		i = 0;
-
-		while(i < count) {
-			/* Try to align destination to 16-byte boundary */
-			while(i < count && (((unsigned long)&samp[i] & 0x1f) || ((count-i) < 8) || ((SND_CHUNK_SIZE - sampleOffset) < 8))) {
-				data  = samples[sampleOffset++];
-				samp[i].left += (data * leftvol)>>8;
-
-				if ( sc->soundChannels == 2 ) {
-					data = samples[sampleOffset++];
-				}
-				samp[i].right += (data * rightvol)>>8;
-	
-				if (sampleOffset == SND_CHUNK_SIZE) {
-					chunk = chunk->next;
-					samples = chunk->sndChunk;
-					sampleOffset = 0;
-				}
-				i++;
-			}
-			/* Destination is now aligned.  Process as many 8-sample 
-			   chunks as we can before we run out of room from the current
-			   sound chunk.  We do 8 per loop to avoid extra source data reads. */
-			samplesLeft = count - i;
-			chunkSamplesLeft = SND_CHUNK_SIZE - sampleOffset;
-			if(samplesLeft > chunkSamplesLeft)
-				samplesLeft = chunkSamplesLeft;
-			
-			vectorCount = samplesLeft / 8;
-			
-			if(vectorCount)
-			{
-				vector unsigned char tmp;
-				vector short s0, s1, sampleData0, sampleData1;
-				vector signed int merge0, merge1;
-				vector signed int d0, d1, d2, d3;				
-				vector unsigned char samplePermute0 =
-					VECCONST_UINT8(0, 1, 4, 5, 0, 1, 4, 5, 2, 3, 6, 7, 2, 3, 6, 7);
-				vector unsigned char samplePermute1 = 
-					VECCONST_UINT8(8, 9, 12, 13, 8, 9, 12, 13, 10, 11, 14, 15, 10, 11, 14, 15);
-				vector unsigned char loadPermute0, loadPermute1;
-				
-				// Rather than permute the vectors after we load them to do the sample
-				// replication and rearrangement, we permute the alignment vector so
-				// we do everything in one step below and avoid data shuffling.
-				tmp = vec_lvsl(0,&samples[sampleOffset]);								
-				loadPermute0 = vec_perm(tmp,tmp,samplePermute0);
-				loadPermute1 = vec_perm(tmp,tmp,samplePermute1);
-				
-				s0 = *(vector short *)&samples[sampleOffset];
-				while(vectorCount)
-				{
-					/* Load up source (16-bit) sample data */
-					s1 = *(vector short *)&samples[sampleOffset+7];
-					
-					/* Load up destination sample data */
-					d0 = *(vector signed int *)&samp[i];
-					d1 = *(vector signed int *)&samp[i+2];
-					d2 = *(vector signed int *)&samp[i+4];
-					d3 = *(vector signed int *)&samp[i+6];
-
-					sampleData0 = vec_perm(s0,s1,loadPermute0);
-					sampleData1 = vec_perm(s0,s1,loadPermute1);
-					
-					merge0 = vec_mule(sampleData0,volume_vec);
-					merge0 = vec_sra(merge0,volume_shift);	/* Shift down to proper range */
-					
-					merge1 = vec_mulo(sampleData0,volume_vec);
-					merge1 = vec_sra(merge1,volume_shift);
-					
-					d0 = vec_add(merge0,d0);
-					d1 = vec_add(merge1,d1);
-					
-					merge0 = vec_mule(sampleData1,volume_vec);
-					merge0 = vec_sra(merge0,volume_shift);	/* Shift down to proper range */
-					
-					merge1 = vec_mulo(sampleData1,volume_vec);
-					merge1 = vec_sra(merge1,volume_shift);					
-
-					d2 = vec_add(merge0,d2);
-					d3 = vec_add(merge1,d3);
-
-					/* Store destination sample data */
-					*(vector signed int *)&samp[i] = d0;
-					*(vector signed int *)&samp[i+2] = d1;
-					*(vector signed int *)&samp[i+4] = d2;
-					*(vector signed int *)&samp[i+6] = d3;
-
-					i += 8;
-					vectorCount--;
-					s0 = s1;
-					sampleOffset += 8;
-				}
-				if (sampleOffset == SND_CHUNK_SIZE) {
-					chunk = chunk->next;
-					samples = chunk->sndChunk;
-					sampleOffset = 0;
-				}
-			}
-		}
-	} else {
-		fleftvol = ch->leftvol*snd_vol;
-		frightvol = ch->rightvol*snd_vol;
-
-		ooff = sampleOffset;
-		samples = chunk->sndChunk;
-		
-		for ( i=0 ; i<count ; i++ ) {
-
-			aoff = ooff;
-			ooff = ooff + ch->dopplerScale * sc->soundChannels;
-			boff = ooff;
-			fdata[0] = fdata[1] = 0;
-			for (j=aoff; j<boff; j += sc->soundChannels) {
-				if (j == SND_CHUNK_SIZE) {
-					chunk = chunk->next;
-					if (!chunk) {
-						chunk = sc->soundData;
-					}
-					samples = chunk->sndChunk;
-					ooff -= SND_CHUNK_SIZE;
-				}
-				if ( sc->soundChannels == 2 ) {
-					fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
-					fdata[1] += samples[(j+1)&(SND_CHUNK_SIZE-1)];
-				} else {
-					fdata[0] += samples[j&(SND_CHUNK_SIZE-1)];
-					fdata[1] += samples[j&(SND_CHUNK_SIZE-1)];
-				}
-			}
-			fdiv = 256 * (boff-aoff) / sc->soundChannels;
-			samp[i].left += (fdata[0] * fleftvol)/fdiv;
-			samp[i].right += (fdata[1] * frightvol)/fdiv;
-		}
-	}
-}
-#endif
-
 static void S_PaintChannelFrom16_scalar( channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
 	int						data, aoff, boff;
 	int						leftvol, rightvol;
@@ -530,8 +336,8 @@ static void S_PaintChannelFrom16_scalar( channel_t *ch, const sfx_t *sc, int cou
 static void S_PaintChannelFrom16( channel_t *ch, const sfx_t *sc, int count, int sampleOffset, int bufferOffset ) {
 #if idppc_altivec
 	if (com_altivec->integer) {
-		// must be in a separate function or G3 systems will crash.
-		S_PaintChannelFrom16_altivec( ch, sc, count, sampleOffset, bufferOffset );
+		// must be in a separate translation unit or G3 systems will crash.
+		S_PaintChannelFrom16_altivec( paintbuffer, snd_vol, ch, sc, count, sampleOffset, bufferOffset );
 		return;
 	}
 #endif
diff --git a/code/renderergl1/tr_altivec.c b/code/renderergl1/tr_altivec.c
new file mode 100644
index 00000000..914aa448
--- /dev/null
+++ b/code/renderergl1/tr_altivec.c
@@ -0,0 +1,414 @@
+/*
+===========================================================================
+Copyright (C) 1999-2005 Id Software, Inc.
+
+This file is part of Quake III Arena source code.
+
+Quake III Arena source code is free software; you can redistribute it
+and/or modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2 of the License,
+or (at your option) any later version.
+
+Quake III Arena source code is distributed in the hope that it will be
+useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with Quake III Arena source code; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+===========================================================================
+*/
+
+/* This file is only compiled for PowerPC builds with Altivec support.
+   Altivec intrinsics need to be in a separate file, so GCC's -maltivec
+   command line can enable them, but give us the option to _not_ use that
+   on other files, where the compiler might then generate Altivec
+   instructions for normal floating point, crashing on G3 (etc) processors. */
+
+#include "tr_local.h" 
+
+#if idppc_altivec
+
+#if !defined(__APPLE__)
+#include <altivec.h>
+#endif
+
+void ProjectDlightTexture_altivec( void ) {
+	int		i, l;
+	vec_t	origin0, origin1, origin2;
+	float   texCoords0, texCoords1;
+	vector float floatColorVec0, floatColorVec1;
+	vector float modulateVec, colorVec, zero;
+	vector short colorShort;
+	vector signed int colorInt;
+	vector unsigned char floatColorVecPerm, modulatePerm, colorChar;
+	vector unsigned char vSel = VECCONST_UINT8(0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff);
+	float	*texCoords;
+	byte	*colors;
+	byte	clipBits[SHADER_MAX_VERTEXES];
+	float	texCoordsArray[SHADER_MAX_VERTEXES][2];
+	byte	colorArray[SHADER_MAX_VERTEXES][4];
+	glIndex_t	hitIndexes[SHADER_MAX_INDEXES];
+	int		numIndexes;
+	float	scale;
+	float	radius;
+	vec3_t	floatColor;
+	float	modulate = 0.0f;
+
+	if ( !backEnd.refdef.num_dlights ) {
+		return;
+	}
+
+	// There has to be a better way to do this so that floatColor
+	// and/or modulate are already 16-byte aligned.
+	floatColorVecPerm = vec_lvsl(0,(float *)floatColor);
+	modulatePerm = vec_lvsl(0,(float *)&modulate);
+	modulatePerm = (vector unsigned char)vec_splat((vector unsigned int)modulatePerm,0);
+	zero = (vector float)vec_splat_s8(0);
+
+	for ( l = 0 ; l < backEnd.refdef.num_dlights ; l++ ) {
+		dlight_t	*dl;
+
+		if ( !( tess.dlightBits & ( 1 << l ) ) ) {
+			continue;	// this surface definitely doesn't have any of this light
+		}
+		texCoords = texCoordsArray[0];
+		colors = colorArray[0];
+
+		dl = &backEnd.refdef.dlights[l];
+		origin0 = dl->transformed[0];
+		origin1 = dl->transformed[1];
+		origin2 = dl->transformed[2];
+		radius = dl->radius;
+		scale = 1.0f / radius;
+
+		if(r_greyscale->integer)
+		{
+			float luminance;
+			
+			luminance = LUMA(dl->color[0], dl->color[1], dl->color[2]) * 255.0f;
+			floatColor[0] = floatColor[1] = floatColor[2] = luminance;
+		}
+		else if(r_greyscale->value)
+		{
+			float luminance;
+			
+			luminance = LUMA(dl->color[0], dl->color[1], dl->color[2]) * 255.0f;
+			floatColor[0] = LERP(dl->color[0] * 255.0f, luminance, r_greyscale->value);
+			floatColor[1] = LERP(dl->color[1] * 255.0f, luminance, r_greyscale->value);
+			floatColor[2] = LERP(dl->color[2] * 255.0f, luminance, r_greyscale->value);
+		}
+		else
+		{
+			floatColor[0] = dl->color[0] * 255.0f;
+			floatColor[1] = dl->color[1] * 255.0f;
+			floatColor[2] = dl->color[2] * 255.0f;
+		}
+		floatColorVec0 = vec_ld(0, floatColor);
+		floatColorVec1 = vec_ld(11, floatColor);
+		floatColorVec0 = vec_perm(floatColorVec0,floatColorVec0,floatColorVecPerm);
+		for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
+			int		clip = 0;
+			vec_t dist0, dist1, dist2;
+			
+			dist0 = origin0 - tess.xyz[i][0];
+			dist1 = origin1 - tess.xyz[i][1];
+			dist2 = origin2 - tess.xyz[i][2];
+
+			backEnd.pc.c_dlightVertexes++;
+
+			texCoords0 = 0.5f + dist0 * scale;
+			texCoords1 = 0.5f + dist1 * scale;
+
+			if( !r_dlightBacks->integer &&
+					// dist . tess.normal[i]
+					( dist0 * tess.normal[i][0] +
+					dist1 * tess.normal[i][1] +
+					dist2 * tess.normal[i][2] ) < 0.0f ) {
+				clip = 63;
+			} else {
+				if ( texCoords0 < 0.0f ) {
+					clip |= 1;
+				} else if ( texCoords0 > 1.0f ) {
+					clip |= 2;
+				}
+				if ( texCoords1 < 0.0f ) {
+					clip |= 4;
+				} else if ( texCoords1 > 1.0f ) {
+					clip |= 8;
+				}
+				texCoords[0] = texCoords0;
+				texCoords[1] = texCoords1;
+
+				// modulate the strength based on the height and color
+				if ( dist2 > radius ) {
+					clip |= 16;
+					modulate = 0.0f;
+				} else if ( dist2 < -radius ) {
+					clip |= 32;
+					modulate = 0.0f;
+				} else {
+					dist2 = Q_fabs(dist2);
+					if ( dist2 < radius * 0.5f ) {
+						modulate = 1.0f;
+					} else {
+						modulate = 2.0f * (radius - dist2) * scale;
+					}
+				}
+			}
+			clipBits[i] = clip;
+
+			modulateVec = vec_ld(0,(float *)&modulate);
+			modulateVec = vec_perm(modulateVec,modulateVec,modulatePerm);
+			colorVec = vec_madd(floatColorVec0,modulateVec,zero);
+			colorInt = vec_cts(colorVec,0);	// RGBx
+			colorShort = vec_pack(colorInt,colorInt);		// RGBxRGBx
+			colorChar = vec_packsu(colorShort,colorShort);	// RGBxRGBxRGBxRGBx
+			colorChar = vec_sel(colorChar,vSel,vSel);		// RGBARGBARGBARGBA replace alpha with 255
+			vec_ste((vector unsigned int)colorChar,0,(unsigned int *)colors);	// store color
+		}
+
+		// build a list of triangles that need light
+		numIndexes = 0;
+		for ( i = 0 ; i < tess.numIndexes ; i += 3 ) {
+			int		a, b, c;
+
+			a = tess.indexes[i];
+			b = tess.indexes[i+1];
+			c = tess.indexes[i+2];
+			if ( clipBits[a] & clipBits[b] & clipBits[c] ) {
+				continue;	// not lighted
+			}
+			hitIndexes[numIndexes] = a;
+			hitIndexes[numIndexes+1] = b;
+			hitIndexes[numIndexes+2] = c;
+			numIndexes += 3;
+		}
+
+		if ( !numIndexes ) {
+			continue;
+		}
+
+		qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
+		qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
+
+		qglEnableClientState( GL_COLOR_ARRAY );
+		qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
+
+		GL_Bind( tr.dlightImage );
+		// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
+		// where they aren't rendered
+		if ( dl->additive ) {
+			GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
+		}
+		else {
+			GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
+		}
+		R_DrawElements( numIndexes, hitIndexes );
+		backEnd.pc.c_totalIndexes += numIndexes;
+		backEnd.pc.c_dlightIndexes += numIndexes;
+	}
+}
+
+void RB_CalcDiffuseColor_altivec( unsigned char *colors )
+{
+	int				i;
+	float			*v, *normal;
+	trRefEntity_t	*ent;
+	int				ambientLightInt;
+	vec3_t			lightDir;
+	int				numVertexes;
+	vector unsigned char vSel = VECCONST_UINT8(0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff,
+                                               0x00, 0x00, 0x00, 0xff);
+	vector float ambientLightVec;
+	vector float directedLightVec;
+	vector float lightDirVec;
+	vector float normalVec0, normalVec1;
+	vector float incomingVec0, incomingVec1, incomingVec2;
+	vector float zero, jVec;
+	vector signed int jVecInt;
+	vector signed short jVecShort;
+	vector unsigned char jVecChar, normalPerm;
+	ent = backEnd.currentEntity;
+	ambientLightInt = ent->ambientLightInt;
+	// A lot of this could be simplified if we made sure
+	// entities light info was 16-byte aligned.
+	jVecChar = vec_lvsl(0, ent->ambientLight);
+	ambientLightVec = vec_ld(0, (vector float *)ent->ambientLight);
+	jVec = vec_ld(11, (vector float *)ent->ambientLight);
+	ambientLightVec = vec_perm(ambientLightVec,jVec,jVecChar);
+
+	jVecChar = vec_lvsl(0, ent->directedLight);
+	directedLightVec = vec_ld(0,(vector float *)ent->directedLight);
+	jVec = vec_ld(11,(vector float *)ent->directedLight);
+	directedLightVec = vec_perm(directedLightVec,jVec,jVecChar);	 
+
+	jVecChar = vec_lvsl(0, ent->lightDir);
+	lightDirVec = vec_ld(0,(vector float *)ent->lightDir);
+	jVec = vec_ld(11,(vector float *)ent->lightDir);
+	lightDirVec = vec_perm(lightDirVec,jVec,jVecChar);	 
+
+	zero = (vector float)vec_splat_s8(0);
+	VectorCopy( ent->lightDir, lightDir );
+
+	v = tess.xyz[0];
+	normal = tess.normal[0];
+
+	normalPerm = vec_lvsl(0,normal);
+	numVertexes = tess.numVertexes;
+	for (i = 0 ; i < numVertexes ; i++, v += 4, normal += 4) {
+		normalVec0 = vec_ld(0,(vector float *)normal);
+		normalVec1 = vec_ld(11,(vector float *)normal);
+		normalVec0 = vec_perm(normalVec0,normalVec1,normalPerm);
+		incomingVec0 = vec_madd(normalVec0, lightDirVec, zero);
+		incomingVec1 = vec_sld(incomingVec0,incomingVec0,4);
+		incomingVec2 = vec_add(incomingVec0,incomingVec1);
+		incomingVec1 = vec_sld(incomingVec1,incomingVec1,4);
+		incomingVec2 = vec_add(incomingVec2,incomingVec1);
+		incomingVec0 = vec_splat(incomingVec2,0);
+		incomingVec0 = vec_max(incomingVec0,zero);
+		normalPerm = vec_lvsl(12,normal);
+		jVec = vec_madd(incomingVec0, directedLightVec, ambientLightVec);
+		jVecInt = vec_cts(jVec,0);	// RGBx
+		jVecShort = vec_pack(jVecInt,jVecInt);		// RGBxRGBx
+		jVecChar = vec_packsu(jVecShort,jVecShort);	// RGBxRGBxRGBxRGBx
+		jVecChar = vec_sel(jVecChar,vSel,vSel);		// RGBARGBARGBARGBA replace alpha with 255
+		vec_ste((vector unsigned int)jVecChar,0,(unsigned int *)&colors[i*4]);	// store color
+	}
+}
+
+void LerpMeshVertexes_altivec(md3Surface_t *surf, float backlerp)
+{
+	short	*oldXyz, *newXyz, *oldNormals, *newNormals;
+	float	*outXyz, *outNormal;
+	float	oldXyzScale QALIGN(16);
+	float   newXyzScale QALIGN(16);
+	float	oldNormalScale QALIGN(16);
+	float newNormalScale QALIGN(16);
+	int		vertNum;
+	unsigned lat, lng;
+	int		numVerts;
+
+	outXyz = tess.xyz[tess.numVertexes];
+	outNormal = tess.normal[tess.numVertexes];
+
+	newXyz = (short *)((byte *)surf + surf->ofsXyzNormals)
+		+ (backEnd.currentEntity->e.frame * surf->numVerts * 4);
+	newNormals = newXyz + 3;
+
+	newXyzScale = MD3_XYZ_SCALE * (1.0 - backlerp);
+	newNormalScale = 1.0 - backlerp;
+
+	numVerts = surf->numVerts;
+
+	if ( backlerp == 0 ) {
+		vector signed short newNormalsVec0;
+		vector signed short newNormalsVec1;
+		vector signed int newNormalsIntVec;
+		vector float newNormalsFloatVec;
+		vector float newXyzScaleVec;
+		vector unsigned char newNormalsLoadPermute;
+		vector unsigned char newNormalsStorePermute;
+		vector float zero;
+		
+		newNormalsStorePermute = vec_lvsl(0,(float *)&newXyzScaleVec);
+		newXyzScaleVec = *(vector float *)&newXyzScale;
+		newXyzScaleVec = vec_perm(newXyzScaleVec,newXyzScaleVec,newNormalsStorePermute);
+		newXyzScaleVec = vec_splat(newXyzScaleVec,0);		
+		newNormalsLoadPermute = vec_lvsl(0,newXyz);
+		newNormalsStorePermute = vec_lvsr(0,outXyz);
+		zero = (vector float)vec_splat_s8(0);
+		//
+		// just copy the vertexes
+		//
+		for (vertNum=0 ; vertNum < numVerts ; vertNum++,
+			newXyz += 4, newNormals += 4,
+			outXyz += 4, outNormal += 4) 
+		{
+			newNormalsLoadPermute = vec_lvsl(0,newXyz);
+			newNormalsStorePermute = vec_lvsr(0,outXyz);
+			newNormalsVec0 = vec_ld(0,newXyz);
+			newNormalsVec1 = vec_ld(16,newXyz);
+			newNormalsVec0 = vec_perm(newNormalsVec0,newNormalsVec1,newNormalsLoadPermute);
+			newNormalsIntVec = vec_unpackh(newNormalsVec0);
+			newNormalsFloatVec = vec_ctf(newNormalsIntVec,0);
+			newNormalsFloatVec = vec_madd(newNormalsFloatVec,newXyzScaleVec,zero);
+			newNormalsFloatVec = vec_perm(newNormalsFloatVec,newNormalsFloatVec,newNormalsStorePermute);
+			//outXyz[0] = newXyz[0] * newXyzScale;
+			//outXyz[1] = newXyz[1] * newXyzScale;
+			//outXyz[2] = newXyz[2] * newXyzScale;
+
+			lat = ( newNormals[0] >> 8 ) & 0xff;
+			lng = ( newNormals[0] & 0xff );
+			lat *= (FUNCTABLE_SIZE/256);
+			lng *= (FUNCTABLE_SIZE/256);
+
+			// decode X as cos( lat ) * sin( long )
+			// decode Y as sin( lat ) * sin( long )
+			// decode Z as cos( long )
+
+			outNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
+			outNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
+			outNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
+
+			vec_ste(newNormalsFloatVec,0,outXyz);
+			vec_ste(newNormalsFloatVec,4,outXyz);
+			vec_ste(newNormalsFloatVec,8,outXyz);
+		}
+	} else {
+		//
+		// interpolate and copy the vertex and normal
+		//
+		oldXyz = (short *)((byte *)surf + surf->ofsXyzNormals)
+			+ (backEnd.currentEntity->e.oldframe * surf->numVerts * 4);
+		oldNormals = oldXyz + 3;
+
+		oldXyzScale = MD3_XYZ_SCALE * backlerp;
+		oldNormalScale = backlerp;
+
+		for (vertNum=0 ; vertNum < numVerts ; vertNum++,
+			oldXyz += 4, newXyz += 4, oldNormals += 4, newNormals += 4,
+			outXyz += 4, outNormal += 4) 
+		{
+			vec3_t uncompressedOldNormal, uncompressedNewNormal;
+
+			// interpolate the xyz
+			outXyz[0] = oldXyz[0] * oldXyzScale + newXyz[0] * newXyzScale;
+			outXyz[1] = oldXyz[1] * oldXyzScale + newXyz[1] * newXyzScale;
+			outXyz[2] = oldXyz[2] * oldXyzScale + newXyz[2] * newXyzScale;
+
+			// FIXME: interpolate lat/long instead?
+			lat = ( newNormals[0] >> 8 ) & 0xff;
+			lng = ( newNormals[0] & 0xff );
+			lat *= 4;
+			lng *= 4;
+			uncompressedNewNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
+			uncompressedNewNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
+			uncompressedNewNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
+
+			lat = ( oldNormals[0] >> 8 ) & 0xff;
+			lng = ( oldNormals[0] & 0xff );
+			lat *= 4;
+			lng *= 4;
+
+			uncompressedOldNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
+			uncompressedOldNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
+			uncompressedOldNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
+
+			outNormal[0] = uncompressedOldNormal[0] * oldNormalScale + uncompressedNewNormal[0] * newNormalScale;
+			outNormal[1] = uncompressedOldNormal[1] * oldNormalScale + uncompressedNewNormal[1] * newNormalScale;
+			outNormal[2] = uncompressedOldNormal[2] * oldNormalScale + uncompressedNewNormal[2] * newNormalScale;
+
+//			VectorNormalize (outNormal);
+		}
+    	VectorArrayNormalize((vec4_t *)tess.normal[tess.numVertexes], numVerts);
+   	}
+}
+
+#endif
diff --git a/code/renderergl1/tr_local.h b/code/renderergl1/tr_local.h
index b7789eae..bbb513af 100644
--- a/code/renderergl1/tr_local.h
+++ b/code/renderergl1/tr_local.h
@@ -1583,5 +1583,13 @@ size_t RE_SaveJPGToBuffer(byte *buffer, size_t bufSize, int quality,
 void RE_TakeVideoFrame( int width, int height,
 		byte *captureBuffer, byte *encodeBuffer, qboolean motionJpeg );
 
+void R_DrawElements( int numIndexes, const glIndex_t *indexes );
+void VectorArrayNormalize( vec4_t *normals, unsigned int count );
+
+#ifdef idppc_altivec
+void LerpMeshVertexes_altivec( md3Surface_t *surf, float backlerp );
+void ProjectDlightTexture_altivec( void );
+void RB_CalcDiffuseColor_altivec( unsigned char *colors );
+#endif
 
 #endif //TR_LOCAL_H
diff --git a/code/renderergl1/tr_shade.c b/code/renderergl1/tr_shade.c
index 19310006..7ea78d13 100644
--- a/code/renderergl1/tr_shade.c
+++ b/code/renderergl1/tr_shade.c
@@ -22,9 +22,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // tr_shade.c
 
 #include "tr_local.h" 
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 /*
 
@@ -163,7 +160,7 @@ instead of using the single glDrawElements call that may be inefficient
 without compiled vertex arrays.
 ==================
 */
-static void R_DrawElements( int numIndexes, const glIndex_t *indexes ) {
+void R_DrawElements( int numIndexes, const glIndex_t *indexes ) {
 	int		primitives;
 
 	primitives = r_primitives->integer;
@@ -407,189 +404,6 @@ ProjectDlightTexture
 Perform dynamic lighting with another rendering pass
 ===================
 */
-#if idppc_altivec
-static void ProjectDlightTexture_altivec( void ) {
-	int		i, l;
-	vec_t	origin0, origin1, origin2;
-	float   texCoords0, texCoords1;
-	vector float floatColorVec0, floatColorVec1;
-	vector float modulateVec, colorVec, zero;
-	vector short colorShort;
-	vector signed int colorInt;
-	vector unsigned char floatColorVecPerm, modulatePerm, colorChar;
-	vector unsigned char vSel = VECCONST_UINT8(0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff);
-	float	*texCoords;
-	byte	*colors;
-	byte	clipBits[SHADER_MAX_VERTEXES];
-	float	texCoordsArray[SHADER_MAX_VERTEXES][2];
-	byte	colorArray[SHADER_MAX_VERTEXES][4];
-	glIndex_t	hitIndexes[SHADER_MAX_INDEXES];
-	int		numIndexes;
-	float	scale;
-	float	radius;
-	vec3_t	floatColor;
-	float	modulate = 0.0f;
-
-	if ( !backEnd.refdef.num_dlights ) {
-		return;
-	}
-
-	// There has to be a better way to do this so that floatColor
-	// and/or modulate are already 16-byte aligned.
-	floatColorVecPerm = vec_lvsl(0,(float *)floatColor);
-	modulatePerm = vec_lvsl(0,(float *)&modulate);
-	modulatePerm = (vector unsigned char)vec_splat((vector unsigned int)modulatePerm,0);
-	zero = (vector float)vec_splat_s8(0);
-
-	for ( l = 0 ; l < backEnd.refdef.num_dlights ; l++ ) {
-		dlight_t	*dl;
-
-		if ( !( tess.dlightBits & ( 1 << l ) ) ) {
-			continue;	// this surface definitely doesn't have any of this light
-		}
-		texCoords = texCoordsArray[0];
-		colors = colorArray[0];
-
-		dl = &backEnd.refdef.dlights[l];
-		origin0 = dl->transformed[0];
-		origin1 = dl->transformed[1];
-		origin2 = dl->transformed[2];
-		radius = dl->radius;
-		scale = 1.0f / radius;
-
-		if(r_greyscale->integer)
-		{
-			float luminance;
-			
-			luminance = LUMA(dl->color[0], dl->color[1], dl->color[2]) * 255.0f;
-			floatColor[0] = floatColor[1] = floatColor[2] = luminance;
-		}
-		else if(r_greyscale->value)
-		{
-			float luminance;
-			
-			luminance = LUMA(dl->color[0], dl->color[1], dl->color[2]) * 255.0f;
-			floatColor[0] = LERP(dl->color[0] * 255.0f, luminance, r_greyscale->value);
-			floatColor[1] = LERP(dl->color[1] * 255.0f, luminance, r_greyscale->value);
-			floatColor[2] = LERP(dl->color[2] * 255.0f, luminance, r_greyscale->value);
-		}
-		else
-		{
-			floatColor[0] = dl->color[0] * 255.0f;
-			floatColor[1] = dl->color[1] * 255.0f;
-			floatColor[2] = dl->color[2] * 255.0f;
-		}
-		floatColorVec0 = vec_ld(0, floatColor);
-		floatColorVec1 = vec_ld(11, floatColor);
-		floatColorVec0 = vec_perm(floatColorVec0,floatColorVec0,floatColorVecPerm);
-		for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
-			int		clip = 0;
-			vec_t dist0, dist1, dist2;
-			
-			dist0 = origin0 - tess.xyz[i][0];
-			dist1 = origin1 - tess.xyz[i][1];
-			dist2 = origin2 - tess.xyz[i][2];
-
-			backEnd.pc.c_dlightVertexes++;
-
-			texCoords0 = 0.5f + dist0 * scale;
-			texCoords1 = 0.5f + dist1 * scale;
-
-			if( !r_dlightBacks->integer &&
-					// dist . tess.normal[i]
-					( dist0 * tess.normal[i][0] +
-					dist1 * tess.normal[i][1] +
-					dist2 * tess.normal[i][2] ) < 0.0f ) {
-				clip = 63;
-			} else {
-				if ( texCoords0 < 0.0f ) {
-					clip |= 1;
-				} else if ( texCoords0 > 1.0f ) {
-					clip |= 2;
-				}
-				if ( texCoords1 < 0.0f ) {
-					clip |= 4;
-				} else if ( texCoords1 > 1.0f ) {
-					clip |= 8;
-				}
-				texCoords[0] = texCoords0;
-				texCoords[1] = texCoords1;
-
-				// modulate the strength based on the height and color
-				if ( dist2 > radius ) {
-					clip |= 16;
-					modulate = 0.0f;
-				} else if ( dist2 < -radius ) {
-					clip |= 32;
-					modulate = 0.0f;
-				} else {
-					dist2 = Q_fabs(dist2);
-					if ( dist2 < radius * 0.5f ) {
-						modulate = 1.0f;
-					} else {
-						modulate = 2.0f * (radius - dist2) * scale;
-					}
-				}
-			}
-			clipBits[i] = clip;
-
-			modulateVec = vec_ld(0,(float *)&modulate);
-			modulateVec = vec_perm(modulateVec,modulateVec,modulatePerm);
-			colorVec = vec_madd(floatColorVec0,modulateVec,zero);
-			colorInt = vec_cts(colorVec,0);	// RGBx
-			colorShort = vec_pack(colorInt,colorInt);		// RGBxRGBx
-			colorChar = vec_packsu(colorShort,colorShort);	// RGBxRGBxRGBxRGBx
-			colorChar = vec_sel(colorChar,vSel,vSel);		// RGBARGBARGBARGBA replace alpha with 255
-			vec_ste((vector unsigned int)colorChar,0,(unsigned int *)colors);	// store color
-		}
-
-		// build a list of triangles that need light
-		numIndexes = 0;
-		for ( i = 0 ; i < tess.numIndexes ; i += 3 ) {
-			int		a, b, c;
-
-			a = tess.indexes[i];
-			b = tess.indexes[i+1];
-			c = tess.indexes[i+2];
-			if ( clipBits[a] & clipBits[b] & clipBits[c] ) {
-				continue;	// not lighted
-			}
-			hitIndexes[numIndexes] = a;
-			hitIndexes[numIndexes+1] = b;
-			hitIndexes[numIndexes+2] = c;
-			numIndexes += 3;
-		}
-
-		if ( !numIndexes ) {
-			continue;
-		}
-
-		qglEnableClientState( GL_TEXTURE_COORD_ARRAY );
-		qglTexCoordPointer( 2, GL_FLOAT, 0, texCoordsArray[0] );
-
-		qglEnableClientState( GL_COLOR_ARRAY );
-		qglColorPointer( 4, GL_UNSIGNED_BYTE, 0, colorArray );
-
-		GL_Bind( tr.dlightImage );
-		// include GLS_DEPTHFUNC_EQUAL so alpha tested surfaces don't add light
-		// where they aren't rendered
-		if ( dl->additive ) {
-			GL_State( GLS_SRCBLEND_ONE | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
-		}
-		else {
-			GL_State( GLS_SRCBLEND_DST_COLOR | GLS_DSTBLEND_ONE | GLS_DEPTHFUNC_EQUAL );
-		}
-		R_DrawElements( numIndexes, hitIndexes );
-		backEnd.pc.c_totalIndexes += numIndexes;
-		backEnd.pc.c_dlightIndexes += numIndexes;
-	}
-}
-#endif
-
-
 static void ProjectDlightTexture_scalar( void ) {
 	int		i, l;
 	vec3_t	origin;
@@ -745,7 +559,7 @@ static void ProjectDlightTexture_scalar( void ) {
 static void ProjectDlightTexture( void ) {
 #if idppc_altivec
 	if (com_altivec->integer) {
-		// must be in a separate function or G3 systems will crash.
+		// must be in a separate translation unit or G3 systems will crash.
 		ProjectDlightTexture_altivec();
 		return;
 	}
diff --git a/code/renderergl1/tr_shade_calc.c b/code/renderergl1/tr_shade_calc.c
index 511ebb4a..455424ed 100644
--- a/code/renderergl1/tr_shade_calc.c
+++ b/code/renderergl1/tr_shade_calc.c
@@ -22,9 +22,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // tr_shade_calc.c
 
 #include "tr_local.h"
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 
 #define	WAVEVALUE( table, base, amplitude, phase, freq )  ((base) + table[ ( (int64_t) ( ( (phase) + tess.shaderTime * (freq) ) * FUNCTABLE_SIZE ) ) & FUNCTABLE_MASK ] * (amplitude))
@@ -1082,77 +1079,6 @@ void RB_CalcSpecularAlpha( unsigned char *alphas ) {
 **
 ** The basic vertex lighting calc
 */
-#if idppc_altivec
-static void RB_CalcDiffuseColor_altivec( unsigned char *colors )
-{
-	int				i;
-	float			*v, *normal;
-	trRefEntity_t	*ent;
-	int				ambientLightInt;
-	vec3_t			lightDir;
-	int				numVertexes;
-	vector unsigned char vSel = VECCONST_UINT8(0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff,
-                                               0x00, 0x00, 0x00, 0xff);
-	vector float ambientLightVec;
-	vector float directedLightVec;
-	vector float lightDirVec;
-	vector float normalVec0, normalVec1;
-	vector float incomingVec0, incomingVec1, incomingVec2;
-	vector float zero, jVec;
-	vector signed int jVecInt;
-	vector signed short jVecShort;
-	vector unsigned char jVecChar, normalPerm;
-	ent = backEnd.currentEntity;
-	ambientLightInt = ent->ambientLightInt;
-	// A lot of this could be simplified if we made sure
-	// entities light info was 16-byte aligned.
-	jVecChar = vec_lvsl(0, ent->ambientLight);
-	ambientLightVec = vec_ld(0, (vector float *)ent->ambientLight);
-	jVec = vec_ld(11, (vector float *)ent->ambientLight);
-	ambientLightVec = vec_perm(ambientLightVec,jVec,jVecChar);
-
-	jVecChar = vec_lvsl(0, ent->directedLight);
-	directedLightVec = vec_ld(0,(vector float *)ent->directedLight);
-	jVec = vec_ld(11,(vector float *)ent->directedLight);
-	directedLightVec = vec_perm(directedLightVec,jVec,jVecChar);	 
-
-	jVecChar = vec_lvsl(0, ent->lightDir);
-	lightDirVec = vec_ld(0,(vector float *)ent->lightDir);
-	jVec = vec_ld(11,(vector float *)ent->lightDir);
-	lightDirVec = vec_perm(lightDirVec,jVec,jVecChar);	 
-
-	zero = (vector float)vec_splat_s8(0);
-	VectorCopy( ent->lightDir, lightDir );
-
-	v = tess.xyz[0];
-	normal = tess.normal[0];
-
-	normalPerm = vec_lvsl(0,normal);
-	numVertexes = tess.numVertexes;
-	for (i = 0 ; i < numVertexes ; i++, v += 4, normal += 4) {
-		normalVec0 = vec_ld(0,(vector float *)normal);
-		normalVec1 = vec_ld(11,(vector float *)normal);
-		normalVec0 = vec_perm(normalVec0,normalVec1,normalPerm);
-		incomingVec0 = vec_madd(normalVec0, lightDirVec, zero);
-		incomingVec1 = vec_sld(incomingVec0,incomingVec0,4);
-		incomingVec2 = vec_add(incomingVec0,incomingVec1);
-		incomingVec1 = vec_sld(incomingVec1,incomingVec1,4);
-		incomingVec2 = vec_add(incomingVec2,incomingVec1);
-		incomingVec0 = vec_splat(incomingVec2,0);
-		incomingVec0 = vec_max(incomingVec0,zero);
-		normalPerm = vec_lvsl(12,normal);
-		jVec = vec_madd(incomingVec0, directedLightVec, ambientLightVec);
-		jVecInt = vec_cts(jVec,0);	// RGBx
-		jVecShort = vec_pack(jVecInt,jVecInt);		// RGBxRGBx
-		jVecChar = vec_packsu(jVecShort,jVecShort);	// RGBxRGBxRGBxRGBx
-		jVecChar = vec_sel(jVecChar,vSel,vSel);		// RGBARGBARGBARGBA replace alpha with 255
-		vec_ste((vector unsigned int)jVecChar,0,(unsigned int *)&colors[i*4]);	// store color
-	}
-}
-#endif
-
 static void RB_CalcDiffuseColor_scalar( unsigned char *colors )
 {
 	int				i, j;
@@ -1206,7 +1132,7 @@ void RB_CalcDiffuseColor( unsigned char *colors )
 {
 #if idppc_altivec
 	if (com_altivec->integer) {
-		// must be in a separate function or G3 systems will crash.
+		// must be in a separate translation unit or G3 systems will crash.
 		RB_CalcDiffuseColor_altivec( colors );
 		return;
 	}
diff --git a/code/renderergl1/tr_surface.c b/code/renderergl1/tr_surface.c
index 0eb1e5c8..41e72738 100644
--- a/code/renderergl1/tr_surface.c
+++ b/code/renderergl1/tr_surface.c
@@ -21,9 +21,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 // tr_surf.c
 #include "tr_local.h"
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 /*
 
@@ -557,7 +554,7 @@ static void RB_SurfaceLightningBolt( void ) {
 * The inputs to this routing seem to always be close to length = 1.0 (about 0.6 to 2.0)
 * This means that we don't have to worry about zero length or enormously long vectors.
 */
-static void VectorArrayNormalize(vec4_t *normals, unsigned int count)
+void VectorArrayNormalize(vec4_t *normals, unsigned int count)
 {
 //    assert(count);
         
@@ -612,136 +609,6 @@ static void VectorArrayNormalize(vec4_t *normals, unsigned int count)
 /*
 ** LerpMeshVertexes
 */
-#if idppc_altivec
-static void LerpMeshVertexes_altivec(md3Surface_t *surf, float backlerp)
-{
-	short	*oldXyz, *newXyz, *oldNormals, *newNormals;
-	float	*outXyz, *outNormal;
-	float	oldXyzScale QALIGN(16);
-	float   newXyzScale QALIGN(16);
-	float	oldNormalScale QALIGN(16);
-	float newNormalScale QALIGN(16);
-	int		vertNum;
-	unsigned lat, lng;
-	int		numVerts;
-
-	outXyz = tess.xyz[tess.numVertexes];
-	outNormal = tess.normal[tess.numVertexes];
-
-	newXyz = (short *)((byte *)surf + surf->ofsXyzNormals)
-		+ (backEnd.currentEntity->e.frame * surf->numVerts * 4);
-	newNormals = newXyz + 3;
-
-	newXyzScale = MD3_XYZ_SCALE * (1.0 - backlerp);
-	newNormalScale = 1.0 - backlerp;
-
-	numVerts = surf->numVerts;
-
-	if ( backlerp == 0 ) {
-		vector signed short newNormalsVec0;
-		vector signed short newNormalsVec1;
-		vector signed int newNormalsIntVec;
-		vector float newNormalsFloatVec;
-		vector float newXyzScaleVec;
-		vector unsigned char newNormalsLoadPermute;
-		vector unsigned char newNormalsStorePermute;
-		vector float zero;
-		
-		newNormalsStorePermute = vec_lvsl(0,(float *)&newXyzScaleVec);
-		newXyzScaleVec = *(vector float *)&newXyzScale;
-		newXyzScaleVec = vec_perm(newXyzScaleVec,newXyzScaleVec,newNormalsStorePermute);
-		newXyzScaleVec = vec_splat(newXyzScaleVec,0);		
-		newNormalsLoadPermute = vec_lvsl(0,newXyz);
-		newNormalsStorePermute = vec_lvsr(0,outXyz);
-		zero = (vector float)vec_splat_s8(0);
-		//
-		// just copy the vertexes
-		//
-		for (vertNum=0 ; vertNum < numVerts ; vertNum++,
-			newXyz += 4, newNormals += 4,
-			outXyz += 4, outNormal += 4) 
-		{
-			newNormalsLoadPermute = vec_lvsl(0,newXyz);
-			newNormalsStorePermute = vec_lvsr(0,outXyz);
-			newNormalsVec0 = vec_ld(0,newXyz);
-			newNormalsVec1 = vec_ld(16,newXyz);
-			newNormalsVec0 = vec_perm(newNormalsVec0,newNormalsVec1,newNormalsLoadPermute);
-			newNormalsIntVec = vec_unpackh(newNormalsVec0);
-			newNormalsFloatVec = vec_ctf(newNormalsIntVec,0);
-			newNormalsFloatVec = vec_madd(newNormalsFloatVec,newXyzScaleVec,zero);
-			newNormalsFloatVec = vec_perm(newNormalsFloatVec,newNormalsFloatVec,newNormalsStorePermute);
-			//outXyz[0] = newXyz[0] * newXyzScale;
-			//outXyz[1] = newXyz[1] * newXyzScale;
-			//outXyz[2] = newXyz[2] * newXyzScale;
-
-			lat = ( newNormals[0] >> 8 ) & 0xff;
-			lng = ( newNormals[0] & 0xff );
-			lat *= (FUNCTABLE_SIZE/256);
-			lng *= (FUNCTABLE_SIZE/256);
-
-			// decode X as cos( lat ) * sin( long )
-			// decode Y as sin( lat ) * sin( long )
-			// decode Z as cos( long )
-
-			outNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
-			outNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
-			outNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
-
-			vec_ste(newNormalsFloatVec,0,outXyz);
-			vec_ste(newNormalsFloatVec,4,outXyz);
-			vec_ste(newNormalsFloatVec,8,outXyz);
-		}
-	} else {
-		//
-		// interpolate and copy the vertex and normal
-		//
-		oldXyz = (short *)((byte *)surf + surf->ofsXyzNormals)
-			+ (backEnd.currentEntity->e.oldframe * surf->numVerts * 4);
-		oldNormals = oldXyz + 3;
-
-		oldXyzScale = MD3_XYZ_SCALE * backlerp;
-		oldNormalScale = backlerp;
-
-		for (vertNum=0 ; vertNum < numVerts ; vertNum++,
-			oldXyz += 4, newXyz += 4, oldNormals += 4, newNormals += 4,
-			outXyz += 4, outNormal += 4) 
-		{
-			vec3_t uncompressedOldNormal, uncompressedNewNormal;
-
-			// interpolate the xyz
-			outXyz[0] = oldXyz[0] * oldXyzScale + newXyz[0] * newXyzScale;
-			outXyz[1] = oldXyz[1] * oldXyzScale + newXyz[1] * newXyzScale;
-			outXyz[2] = oldXyz[2] * oldXyzScale + newXyz[2] * newXyzScale;
-
-			// FIXME: interpolate lat/long instead?
-			lat = ( newNormals[0] >> 8 ) & 0xff;
-			lng = ( newNormals[0] & 0xff );
-			lat *= 4;
-			lng *= 4;
-			uncompressedNewNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
-			uncompressedNewNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
-			uncompressedNewNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
-
-			lat = ( oldNormals[0] >> 8 ) & 0xff;
-			lng = ( oldNormals[0] & 0xff );
-			lat *= 4;
-			lng *= 4;
-
-			uncompressedOldNormal[0] = tr.sinTable[(lat+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK] * tr.sinTable[lng];
-			uncompressedOldNormal[1] = tr.sinTable[lat] * tr.sinTable[lng];
-			uncompressedOldNormal[2] = tr.sinTable[(lng+(FUNCTABLE_SIZE/4))&FUNCTABLE_MASK];
-
-			outNormal[0] = uncompressedOldNormal[0] * oldNormalScale + uncompressedNewNormal[0] * newNormalScale;
-			outNormal[1] = uncompressedOldNormal[1] * oldNormalScale + uncompressedNewNormal[1] * newNormalScale;
-			outNormal[2] = uncompressedOldNormal[2] * oldNormalScale + uncompressedNewNormal[2] * newNormalScale;
-
-//			VectorNormalize (outNormal);
-		}
-    	VectorArrayNormalize((vec4_t *)tess.normal[tess.numVertexes], numVerts);
-   	}
-}
-#endif
-
 static void LerpMeshVertexes_scalar(md3Surface_t *surf, float backlerp)
 {
 	short	*oldXyz, *newXyz, *oldNormals, *newNormals;
@@ -844,7 +711,7 @@ static void LerpMeshVertexes(md3Surface_t *surf, float backlerp)
 {
 #if idppc_altivec
 	if (com_altivec->integer) {
-		// must be in a separate function or G3 systems will crash.
+		// must be in a separate translation unit or G3 systems will crash.
 		LerpMeshVertexes_altivec( surf, backlerp );
 		return;
 	}
diff --git a/code/renderergl2/tr_shade.c b/code/renderergl2/tr_shade.c
index 778a74c4..04eaa755 100644
--- a/code/renderergl2/tr_shade.c
+++ b/code/renderergl2/tr_shade.c
@@ -22,9 +22,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // tr_shade.c
 
 #include "tr_local.h" 
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 /*
 
diff --git a/code/renderergl2/tr_shade_calc.c b/code/renderergl2/tr_shade_calc.c
index 80e1a383..15cfb9c6 100644
--- a/code/renderergl2/tr_shade_calc.c
+++ b/code/renderergl2/tr_shade_calc.c
@@ -22,9 +22,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 // tr_shade_calc.c
 
 #include "tr_local.h"
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 
 #define	WAVEVALUE( table, base, amplitude, phase, freq )  ((base) + table[ ( (int64_t) ( ( (phase) + tess.shaderTime * (freq) ) * FUNCTABLE_SIZE ) ) & FUNCTABLE_MASK ] * (amplitude))
diff --git a/code/renderergl2/tr_surface.c b/code/renderergl2/tr_surface.c
index 5b6b933e..66e894ce 100644
--- a/code/renderergl2/tr_surface.c
+++ b/code/renderergl2/tr_surface.c
@@ -21,9 +21,6 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 // tr_surf.c
 #include "tr_local.h"
-#if idppc_altivec && !defined(__APPLE__)
-#include <altivec.h>
-#endif
 
 /*