patch to import Jon Smirl's work from Bitkeeper

1 files changed, 682 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/radeon/radeon_lighting.c b/src/mesa/drivers/dri/radeon/radeon_lighting.c
new file mode 100644
index 0000000000..b00c9cb6de
--- /dev/null
+++ b/src/mesa/drivers/dri/radeon/radeon_lighting.c
@@ -0,0 +1,682 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/radeon/radeon_state.c,v 1.5 2002/09/16 18:05:20 eich Exp $ */
+/*
+ * Copyright 2000, 2001 VA Linux Systems Inc., Fremont, California.
+ *
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *    Gareth Hughes <gareth@valinux.com>
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "imports.h"
+#include "api_arrayelt.h"
+/* #include "mmath.h" */
+#include "enums.h"
+#include "colormac.h"
+
+
+#include "radeon_context.h"
+#include "radeon_ioctl.h"
+#include "radeon_state.h"
+#include "radeon_tcl.h"
+#include "radeon_tex.h"
+#include "radeon_vtxfmt.h"
+
+
+
+/* =============================================================
+ * Materials
+ */
+
+
+/* Update on colormaterial, material emmissive/ambient, 
+ * lightmodel.globalambient
+ */
+void update_global_ambient( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   float *fcmd = (float *)RADEON_DB_STATE( glt );
+
+   /* Need to do more if both emmissive & ambient are PREMULT:
+    */
+   if ((rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &
+       ((3 << RADEON_EMISSIVE_SOURCE_SHIFT) |
+	(3 << RADEON_AMBIENT_SOURCE_SHIFT))) == 0) 
+   {
+      COPY_3V( &fcmd[GLT_RED], 
+	       ctx->Light.Material[0].Emission);
+      ACC_SCALE_3V( &fcmd[GLT_RED],
+		   ctx->Light.Model.Ambient,
+		   ctx->Light.Material[0].Ambient);
+   } 
+   else
+   {
+      COPY_3V( &fcmd[GLT_RED], ctx->Light.Model.Ambient );
+   }
+   
+   RADEON_DB_STATECHANGE(rmesa, &rmesa->hw.glt);
+}
+
+/* Update on change to 
+ *    - light[p].colors
+ *    - light[p].enabled
+ *    - material,
+ *    - colormaterial enabled
+ *    - colormaterial bitmask
+ */
+void update_light_colors( GLcontext *ctx, GLuint p )
+{
+   struct gl_light *l = &ctx->Light.Light[p];
+
+/*     fprintf(stderr, "%s\n", __FUNCTION__); */
+
+   if (l->Enabled) {
+      radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+      float *fcmd = (float *)RADEON_DB_STATE( lit[p] );
+      GLuint bitmask = ctx->Light.ColorMaterialBitmask;
+      struct gl_material *mat = &ctx->Light.Material[0];
+
+      COPY_4V( &fcmd[LIT_AMBIENT_RED], l->Ambient );	 
+      COPY_4V( &fcmd[LIT_DIFFUSE_RED], l->Diffuse );
+      COPY_4V( &fcmd[LIT_SPECULAR_RED], l->Specular );
+      
+      if (!ctx->Light.ColorMaterialEnabled)
+	 bitmask = 0;
+
+      if ((bitmask & FRONT_AMBIENT_BIT) == 0) 
+	 SELF_SCALE_3V( &fcmd[LIT_AMBIENT_RED], mat->Ambient );
+
+      if ((bitmask & FRONT_DIFFUSE_BIT) == 0) 
+	 SELF_SCALE_3V( &fcmd[LIT_DIFFUSE_RED], mat->Diffuse );
+      
+      if ((bitmask & FRONT_SPECULAR_BIT) == 0) 
+	 SELF_SCALE_3V( &fcmd[LIT_SPECULAR_RED], mat->Specular );
+
+      RADEON_DB_STATECHANGE( rmesa, &rmesa->hw.lit[p] );
+   }
+}
+
+/* Also fallback for asym colormaterial mode in twoside lighting...
+ */
+void check_twoside_fallback( GLcontext *ctx )
+{
+   GLboolean fallback = GL_FALSE;
+
+   if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) {
+      if (memcmp( &ctx->Light.Material[0],
+		  &ctx->Light.Material[1],
+		  sizeof(struct gl_material)) != 0)
+	 fallback = GL_TRUE;  
+      else if (ctx->Light.ColorMaterialEnabled &&
+	       (ctx->Light.ColorMaterialBitmask & BACK_MATERIAL_BITS) != 
+	       ((ctx->Light.ColorMaterialBitmask & FRONT_MATERIAL_BITS)<<1))
+	 fallback = GL_TRUE;
+   }
+
+   TCL_FALLBACK( ctx, RADEON_TCL_FALLBACK_LIGHT_TWOSIDE, fallback );
+}
+
+void radeonColorMaterial( GLcontext *ctx, GLenum face, GLenum mode )
+{
+   if (ctx->Light.ColorMaterialEnabled) {
+      radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+      GLuint light_model_ctl = rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL];
+      GLuint mask = ctx->Light.ColorMaterialBitmask;
+
+      /* Default to PREMULT:
+       */
+      light_model_ctl &= ~((3 << RADEON_EMISSIVE_SOURCE_SHIFT) |
+			   (3 << RADEON_AMBIENT_SOURCE_SHIFT) |
+			   (3 << RADEON_DIFFUSE_SOURCE_SHIFT) |
+			   (3 << RADEON_SPECULAR_SOURCE_SHIFT)); 
+   
+      if (mask & FRONT_EMISSION_BIT) {
+	 light_model_ctl |= (RADEON_LM_SOURCE_VERTEX_DIFFUSE <<
+			     RADEON_EMISSIVE_SOURCE_SHIFT);
+      }
+
+      if (mask & FRONT_AMBIENT_BIT) {
+	 light_model_ctl |= (RADEON_LM_SOURCE_VERTEX_DIFFUSE <<
+			     RADEON_AMBIENT_SOURCE_SHIFT);
+      }
+	 
+      if (mask & FRONT_DIFFUSE_BIT) {
+	 light_model_ctl |= (RADEON_LM_SOURCE_VERTEX_DIFFUSE <<
+			     RADEON_DIFFUSE_SOURCE_SHIFT);
+      }
+   
+      if (mask & FRONT_SPECULAR_BIT) {
+	 light_model_ctl |= (RADEON_LM_SOURCE_VERTEX_DIFFUSE <<
+			     RADEON_SPECULAR_SOURCE_SHIFT);
+      }
+   
+      if (light_model_ctl != rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL]) {
+	 GLuint p;
+
+	 RADEON_STATECHANGE( rmesa, tcl );
+	 rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] = light_model_ctl;      
+
+	 for (p = 0 ; p < MAX_LIGHTS; p++) 
+	    update_light_colors( ctx, p );
+	 update_global_ambient( ctx );
+      }
+   }
+   
+   check_twoside_fallback( ctx );
+}
+
+void radeonUpdateMaterial( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   GLfloat *fcmd = (GLfloat *)RADEON_DB_STATE( mtl );
+   GLuint p;
+   GLuint mask = ~0;
+   
+   if (ctx->Light.ColorMaterialEnabled)
+      mask &= ~ctx->Light.ColorMaterialBitmask;
+
+   if (RADEON_DEBUG & DEBUG_STATE)
+      fprintf(stderr, "%s\n", __FUNCTION__);
+
+      
+   if (mask & FRONT_EMISSION_BIT) {
+      fcmd[MTL_EMMISSIVE_RED]   = ctx->Light.Material[0].Emission[0];
+      fcmd[MTL_EMMISSIVE_GREEN] = ctx->Light.Material[0].Emission[1];
+      fcmd[MTL_EMMISSIVE_BLUE]  = ctx->Light.Material[0].Emission[2];
+      fcmd[MTL_EMMISSIVE_ALPHA] = ctx->Light.Material[0].Emission[3];
+   }
+   if (mask & FRONT_AMBIENT_BIT) {
+      fcmd[MTL_AMBIENT_RED]     = ctx->Light.Material[0].Ambient[0];
+      fcmd[MTL_AMBIENT_GREEN]   = ctx->Light.Material[0].Ambient[1];
+      fcmd[MTL_AMBIENT_BLUE]    = ctx->Light.Material[0].Ambient[2];
+      fcmd[MTL_AMBIENT_ALPHA]   = ctx->Light.Material[0].Ambient[3];
+   }
+   if (mask & FRONT_DIFFUSE_BIT) {
+      fcmd[MTL_DIFFUSE_RED]     = ctx->Light.Material[0].Diffuse[0];
+      fcmd[MTL_DIFFUSE_GREEN]   = ctx->Light.Material[0].Diffuse[1];
+      fcmd[MTL_DIFFUSE_BLUE]    = ctx->Light.Material[0].Diffuse[2];
+      fcmd[MTL_DIFFUSE_ALPHA]   = ctx->Light.Material[0].Diffuse[3];
+   }
+   if (mask & FRONT_SPECULAR_BIT) {
+      fcmd[MTL_SPECULAR_RED]    = ctx->Light.Material[0].Specular[0];
+      fcmd[MTL_SPECULAR_GREEN]  = ctx->Light.Material[0].Specular[1];
+      fcmd[MTL_SPECULAR_BLUE]   = ctx->Light.Material[0].Specular[2];
+      fcmd[MTL_SPECULAR_ALPHA]  = ctx->Light.Material[0].Specular[3];
+   }
+   if (mask & FRONT_SHININESS_BIT) {
+      fcmd[MTL_SHININESS]       = ctx->Light.Material[0].Shininess;
+   }
+
+   if (RADEON_DB_STATECHANGE( rmesa, &rmesa->hw.mtl )) {
+      for (p = 0 ; p < MAX_LIGHTS; p++) 
+	 update_light_colors( ctx, p );
+
+      check_twoside_fallback( ctx );
+      update_global_ambient( ctx );
+   }
+   else if (RADEON_DEBUG & (DEBUG_PRIMS|DEBUG_STATE))
+      fprintf(stderr, "%s: Elided noop material call\n", __FUNCTION__);
+}
+
+/* _NEW_LIGHT
+ * _NEW_MODELVIEW
+ * _MESA_NEW_NEED_EYE_COORDS
+ *
+ * Uses derived state from mesa:
+ *       _VP_inf_norm
+ *       _h_inf_norm
+ *       _Position
+ *       _NormDirection
+ *       _ModelViewInvScale
+ *       _NeedEyeCoords
+ *       _EyeZDir
+ *
+ * which are calculated in light.c and are correct for the current
+ * lighting space (model or eye), hence dependencies on _NEW_MODELVIEW
+ * and _MESA_NEW_NEED_EYE_COORDS.  
+ */
+void radeonUpdateLighting( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+
+   /* Have to check these, or have an automatic shortcircuit mechanism
+    * to remove noop statechanges. (Or just do a better job on the
+    * front end).
+    */
+   {
+      GLuint tmp = rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL];
+
+      if (ctx->_NeedEyeCoords)
+	 tmp &= ~RADEON_LIGHT_IN_MODELSPACE;
+      else
+	 tmp |= RADEON_LIGHT_IN_MODELSPACE;
+      
+
+      /* Leave this test disabled: (unexplained q3 lockup) (even with
+         new packets)
+      */
+      if (tmp != rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL]) 
+      {
+	 RADEON_STATECHANGE( rmesa, tcl );
+	 rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] = tmp;
+      }
+   }
+
+   {
+      GLfloat *fcmd = (GLfloat *)RADEON_DB_STATE( eye );
+      fcmd[EYE_X] = ctx->_EyeZDir[0];
+      fcmd[EYE_Y] = ctx->_EyeZDir[1];
+      fcmd[EYE_Z] = - ctx->_EyeZDir[2];
+      fcmd[EYE_RESCALE_FACTOR] = ctx->_ModelViewInvScale;
+      RADEON_DB_STATECHANGE( rmesa, &rmesa->hw.eye );
+   }
+
+
+/*     RADEON_STATECHANGE( rmesa, glt ); */
+
+   if (ctx->Light.Enabled) {
+      GLint p;
+      for (p = 0 ; p < MAX_LIGHTS; p++) {
+	 if (ctx->Light.Light[p].Enabled) {
+	    struct gl_light *l = &ctx->Light.Light[p];
+	    GLfloat *fcmd = (GLfloat *)RADEON_DB_STATE( lit[p] );
+	    
+	    if (l->EyePosition[3] == 0.0) {
+	       COPY_3FV( &fcmd[LIT_POSITION_X], l->_VP_inf_norm ); 
+	       COPY_3FV( &fcmd[LIT_DIRECTION_X], l->_h_inf_norm ); 
+	       fcmd[LIT_POSITION_W] = 0;
+	       fcmd[LIT_DIRECTION_W] = 0;
+	    } else {
+	       COPY_4V( &fcmd[LIT_POSITION_X], l->_Position );
+	       fcmd[LIT_DIRECTION_X] = -l->_NormDirection[0];
+	       fcmd[LIT_DIRECTION_Y] = -l->_NormDirection[1];
+	       fcmd[LIT_DIRECTION_Z] = -l->_NormDirection[2];
+	       fcmd[LIT_DIRECTION_W] = 0;
+	    }
+
+	    RADEON_DB_STATECHANGE( rmesa, &rmesa->hw.lit[p] );
+	 }
+      }
+   }
+}
+
+
+void radeonLightfv( GLcontext *ctx, GLenum light,
+		    GLenum pname, const GLfloat *params )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   GLint p = light - GL_LIGHT0;
+   struct gl_light *l = &ctx->Light.Light[p];
+   GLfloat *fcmd = (GLfloat *)rmesa->hw.lit[p].cmd;
+   
+
+   switch (pname) {
+   case GL_AMBIENT:		
+   case GL_DIFFUSE:
+   case GL_SPECULAR:
+      update_light_colors( ctx, p );
+      break;
+
+   case GL_SPOT_DIRECTION: 
+      /* picked up in update_light */	
+      break;
+
+   case GL_POSITION: {
+      /* positions picked up in update_light, but can do flag here */	
+      GLuint flag = (p&1)? RADEON_LIGHT_1_IS_LOCAL : RADEON_LIGHT_0_IS_LOCAL;
+      GLuint idx = TCL_PER_LIGHT_CTL_0 + p/2;
+
+      RADEON_STATECHANGE(rmesa, tcl);
+      if (l->EyePosition[3] != 0.0F)
+	 rmesa->hw.tcl.cmd[idx] |= flag;
+      else
+	 rmesa->hw.tcl.cmd[idx] &= ~flag;
+      break;
+   }
+
+   case GL_SPOT_EXPONENT:
+      RADEON_STATECHANGE(rmesa, lit[p]);
+      fcmd[LIT_SPOT_EXPONENT] = params[0];
+      break;
+
+   case GL_SPOT_CUTOFF: {
+      GLuint flag = (p&1) ? RADEON_LIGHT_1_IS_SPOT : RADEON_LIGHT_0_IS_SPOT;
+      GLuint idx = TCL_PER_LIGHT_CTL_0 + p/2;
+
+      RADEON_STATECHANGE(rmesa, lit[p]);
+      fcmd[LIT_SPOT_CUTOFF] = l->_CosCutoff;
+
+      RADEON_STATECHANGE(rmesa, tcl);
+      if (l->SpotCutoff != 180.0F)
+	 rmesa->hw.tcl.cmd[idx] |= flag;
+      else
+	 rmesa->hw.tcl.cmd[idx] &= ~flag;
+      break;
+   }
+
+   case GL_CONSTANT_ATTENUATION:
+      RADEON_STATECHANGE(rmesa, lit[p]);
+      fcmd[LIT_ATTEN_CONST] = params[0];
+      break;
+   case GL_LINEAR_ATTENUATION:
+      RADEON_STATECHANGE(rmesa, lit[p]);
+      fcmd[LIT_ATTEN_LINEAR] = params[0];
+      break;
+   case GL_QUADRATIC_ATTENUATION:
+      RADEON_STATECHANGE(rmesa, lit[p]);
+      fcmd[LIT_ATTEN_QUADRATIC] = params[0];
+      break;
+   default:
+      return;
+   }
+
+}
+
+		  
+
+
+void radeonLightModelfv( GLcontext *ctx, GLenum pname,
+			 const GLfloat *param )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+
+   switch (pname) {
+      case GL_LIGHT_MODEL_AMBIENT: 
+	 update_global_ambient( ctx );
+	 break;
+
+      case GL_LIGHT_MODEL_LOCAL_VIEWER:
+	 RADEON_STATECHANGE( rmesa, tcl );
+	 if (ctx->Light.Model.LocalViewer)
+	    rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= RADEON_LOCAL_VIEWER;
+	 else
+	    rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &= ~RADEON_LOCAL_VIEWER;
+         break;
+
+      case GL_LIGHT_MODEL_TWO_SIDE:
+	 RADEON_STATECHANGE( rmesa, tcl );
+	 if (ctx->Light.Model.TwoSide)
+	    rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] |= RADEON_LIGHT_TWOSIDE;
+	 else
+	    rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] &= ~RADEON_LIGHT_TWOSIDE;
+
+	 check_twoside_fallback( ctx );
+
+#if _HAVE_SWTNL
+	 if (rmesa->TclFallback) {
+	    radeonChooseRenderState( ctx );
+	    radeonChooseVertexState( ctx );
+	 }
+#endif
+         break;
+
+      case GL_LIGHT_MODEL_COLOR_CONTROL:
+	 radeonUpdateSpecular(ctx);
+
+	 RADEON_STATECHANGE( rmesa, tcl );
+	 if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR) 
+	    rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &= 
+	       ~RADEON_DIFFUSE_SPECULAR_COMBINE;
+	 else
+	    rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= 
+	       RADEON_DIFFUSE_SPECULAR_COMBINE;
+         break;
+
+      default:
+         break;
+   }
+}
+
+
+/* =============================================================
+ * Fog
+ */
+
+
+static void radeonFogfv( GLcontext *ctx, GLenum pname, const GLfloat *param )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   union { int i; float f; } c, d;
+   GLchan col[4];
+
+   c.i = rmesa->hw.fog.cmd[FOG_C];
+   d.i = rmesa->hw.fog.cmd[FOG_D];
+
+   switch (pname) {
+   case GL_FOG_MODE:
+      if (!ctx->Fog.Enabled)
+	 return;
+      RADEON_STATECHANGE(rmesa, tcl);
+      rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] &= ~RADEON_TCL_FOG_MASK;
+      switch (ctx->Fog.Mode) {
+      case GL_LINEAR:
+	 rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] |= RADEON_TCL_FOG_LINEAR;
+	 if (ctx->Fog.Start == ctx->Fog.End) {
+	    c.f = 1.0F;
+	    d.f = 1.0F;
+	 }
+	 else {
+	    c.f = ctx->Fog.End/(ctx->Fog.End-ctx->Fog.Start);
+	    d.f = 1.0/(ctx->Fog.End-ctx->Fog.Start);
+	 }
+	 break;
+      case GL_EXP:
+	 rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] |= RADEON_TCL_FOG_EXP;
+	 c.f = 0.0;
+	 d.f = ctx->Fog.Density;
+	 break;
+      case GL_EXP2:
+	 rmesa->hw.tcl.cmd[TCL_UCP_VERT_BLEND_CTL] |= RADEON_TCL_FOG_EXP2;
+	 c.f = 0.0;
+	 d.f = -(ctx->Fog.Density * ctx->Fog.Density);
+	 break;
+      default:
+	 return;
+      }
+      break;
+   case GL_FOG_DENSITY:
+      switch (ctx->Fog.Mode) {
+      case GL_EXP:
+	 c.f = 0.0;
+	 d.f = ctx->Fog.Density;
+	 break;
+      case GL_EXP2:
+	 c.f = 0.0;
+	 d.f = -(ctx->Fog.Density * ctx->Fog.Density);
+	 break;
+      default:
+	 break;
+      }
+      break;
+   case GL_FOG_START:
+   case GL_FOG_END:
+      if (ctx->Fog.Mode == GL_LINEAR) {
+	 if (ctx->Fog.Start == ctx->Fog.End) {
+	    c.f = 1.0F;
+	    d.f = 1.0F;
+	 } else {
+	    c.f = ctx->Fog.End/(ctx->Fog.End-ctx->Fog.Start);
+	    d.f = 1.0/(ctx->Fog.End-ctx->Fog.Start);
+	 }
+      }
+      break;
+   case GL_FOG_COLOR: 
+      RADEON_STATECHANGE( rmesa, ctx );
+      UNCLAMPED_FLOAT_TO_RGB_CHAN( col, ctx->Fog.Color );
+      rmesa->hw.ctx.cmd[CTX_PP_FOG_COLOR] =
+	 radeonPackColor( 4, col[0], col[1], col[2], 0 );
+      break;
+   case GL_FOG_COORDINATE_SOURCE_EXT: 
+      /* What to do?
+       */
+      break;
+   default:
+      return;
+   }
+
+   if (c.i != rmesa->hw.fog.cmd[FOG_C] || d.i != rmesa->hw.fog.cmd[FOG_D]) {
+      RADEON_STATECHANGE( rmesa, fog );
+      rmesa->hw.fog.cmd[FOG_C] = c.i;
+      rmesa->hw.fog.cmd[FOG_D] = d.i;
+   }
+}
+
+/* Examine lighting and texture state to determine if separate specular
+ * should be enabled.
+ */
+void radeonUpdateSpecular( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   GLuint p = rmesa->hw.ctx.cmd[CTX_PP_CNTL];
+
+   if ( ctx->_TriangleCaps & DD_SEPARATE_SPECULAR ) {
+      p |=  RADEON_SPECULAR_ENABLE;
+   } else {
+      p &= ~RADEON_SPECULAR_ENABLE;
+   }
+
+   if ( rmesa->hw.ctx.cmd[CTX_PP_CNTL] != p ) {
+      RADEON_STATECHANGE( rmesa, ctx );
+      rmesa->hw.ctx.cmd[CTX_PP_CNTL] = p;
+   }
+
+   /* Bizzare: have to leave lighting enabled to get fog.
+    */
+   RADEON_STATECHANGE( rmesa, tcl );
+   if ((ctx->Light.Enabled &&
+	ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR)) {
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_SPECULAR;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_SPEC;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= RADEON_LIGHTING_ENABLE;
+   }
+   else if (ctx->Fog.Enabled) {
+      if (ctx->Light.Enabled) {
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_SPECULAR;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_DIFFUSE;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_SPEC;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+	 rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= RADEON_LIGHTING_ENABLE;
+      } else {
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_SPECULAR;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_DIFFUSE;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_SPEC;
+	 rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+	 rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= RADEON_LIGHTING_ENABLE;
+      }
+   }
+   else if (ctx->Light.Enabled) {
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_SPECULAR;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] |= RADEON_TCL_COMPUTE_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] &= ~RADEON_TCL_VTX_PK_SPEC;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |= RADEON_LIGHTING_ENABLE;
+   } else if (ctx->Fog.ColorSumEnabled ) {
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_SPECULAR;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_SPEC;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &= ~RADEON_LIGHTING_ENABLE;
+   } else {
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_SPECULAR;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXSEL] &= ~RADEON_TCL_COMPUTE_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] &= ~RADEON_TCL_VTX_PK_SPEC;
+      rmesa->hw.tcl.cmd[TCL_OUTPUT_VTXFMT] |= RADEON_TCL_VTX_PK_DIFFUSE;
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &= ~RADEON_LIGHTING_ENABLE;
+   }
+
+#if _HAVE_SWTNL
+   /* Update vertex/render formats
+    */
+   if (rmesa->TclFallback) { 
+      radeonChooseRenderState( ctx );
+      radeonChooseVertexState( ctx );
+   }
+#endif
+}
+
+
+
+static void radeonLightingSpaceChange( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   GLboolean tmp;
+   RADEON_STATECHANGE( rmesa, tcl );
+
+   if (RADEON_DEBUG & DEBUG_STATE)
+      fprintf(stderr, "%s %d\n", __FUNCTION__, ctx->_NeedEyeCoords);
+
+   if (ctx->_NeedEyeCoords)
+      tmp = ctx->Transform.RescaleNormals;
+   else
+      tmp = !ctx->Transform.RescaleNormals;
+
+   if ( tmp ) {
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] |=  RADEON_RESCALE_NORMALS;
+   } else {
+      rmesa->hw.tcl.cmd[TCL_LIGHT_MODEL_CTL] &= ~RADEON_RESCALE_NORMALS;
+   }
+}
+
+void radeonInitLightStateFuncs( GLcontext *ctx )
+{
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+   int i;
+
+   ctx->Driver.LightModelfv		= radeonLightModelfv; 
+   ctx->Driver.Lightfv			= radeonLightfv; 
+   ctx->Driver.Fogfv			= radeonFogfv;
+   ctx->Driver.LightingSpaceChange      = radeonLightingSpaceChange;
+
+   for (i = 0 ; i < 8; i++) {
+      struct gl_light *l = &ctx->Light.Light[i];
+      GLenum p = GL_LIGHT0 + i;
+      *(float *)&(rmesa->hw.lit[i].cmd[LIT_RANGE_CUTOFF]) = FLT_MAX;
+
+      ctx->Driver.Lightfv( ctx, p, GL_AMBIENT, l->Ambient );
+      ctx->Driver.Lightfv( ctx, p, GL_DIFFUSE, l->Diffuse );
+      ctx->Driver.Lightfv( ctx, p, GL_SPECULAR, l->Specular );
+      ctx->Driver.Lightfv( ctx, p, GL_POSITION, 0 );
+      ctx->Driver.Lightfv( ctx, p, GL_SPOT_DIRECTION, 0 );
+      ctx->Driver.Lightfv( ctx, p, GL_SPOT_EXPONENT, &l->SpotExponent );
+      ctx->Driver.Lightfv( ctx, p, GL_SPOT_CUTOFF, &l->SpotCutoff );
+      ctx->Driver.Lightfv( ctx, p, GL_CONSTANT_ATTENUATION,
+			   &l->ConstantAttenuation );
+      ctx->Driver.Lightfv( ctx, p, GL_LINEAR_ATTENUATION, 
+			   &l->LinearAttenuation );
+      ctx->Driver.Lightfv( ctx, p, GL_QUADRATIC_ATTENUATION, 
+		     &l->QuadraticAttenuation );
+   }
+
+   ctx->Driver.LightModelfv( ctx, GL_LIGHT_MODEL_AMBIENT, 
+			     ctx->Light.Model.Ambient );
+
+   ctx->Driver.Fogfv( ctx, GL_FOG_MODE, 0 );
+   ctx->Driver.Fogfv( ctx, GL_FOG_DENSITY, &ctx->Fog.Density );
+   ctx->Driver.Fogfv( ctx, GL_FOG_START, &ctx->Fog.Start );
+   ctx->Driver.Fogfv( ctx, GL_FOG_END, &ctx->Fog.End );
+   ctx->Driver.Fogfv( ctx, GL_FOG_COLOR, ctx->Fog.Color );
+   ctx->Driver.Fogfv( ctx, GL_FOG_COORDINATE_SOURCE_EXT, 0 );
+}