From bcc6eddd335e97d49ed2ef3a1440f94d58dce12d Mon Sep 17 00:00:00 2001
From: Jon Smirl <jonsmirl@gmail.com>
Date: Tue, 21 Oct 2003 06:05:39 +0000
Subject: Update DRI drivers to current DRI CVS and make them work.

---
 src/mesa/drivers/dri/mga/Makefile.X11     |   6 +-
 src/mesa/drivers/dri/mga/mga_texcombine.c | 647 ++++++++++++++++++++++++++++++
 src/mesa/drivers/dri/mga/mga_texstate.c   | 592 +++++++++++++++++++--------
 src/mesa/drivers/dri/mga/mga_xmesa.c      | 110 ++---
 src/mesa/drivers/dri/mga/mga_xmesa.h      |   4 +
 src/mesa/drivers/dri/mga/mgacontext.h     |  20 +-
 src/mesa/drivers/dri/mga/mgaioctl.c       |   3 +-
 src/mesa/drivers/dri/mga/mgastate.c       |  87 ++--
 src/mesa/drivers/dri/mga/mgatex.c         |  49 ++-
 src/mesa/drivers/dri/mga/mgatex.h         |   2 +
 src/mesa/drivers/dri/mga/mgatris.c        |  16 +-
 src/mesa/drivers/dri/mga/mgavb.c          |   7 +-
 12 files changed, 1237 insertions(+), 306 deletions(-)
 create mode 100644 src/mesa/drivers/dri/mga/mga_texcombine.c

(limited to 'src/mesa/drivers/dri/mga')

diff --git a/src/mesa/drivers/dri/mga/Makefile.X11 b/src/mesa/drivers/dri/mga/Makefile.X11
index f816616f2c..cb76983822 100644
--- a/src/mesa/drivers/dri/mga/Makefile.X11
+++ b/src/mesa/drivers/dri/mga/Makefile.X11
@@ -1,4 +1,4 @@
-# $Id: Makefile.X11,v 1.4 2003/10/20 02:17:33 jonsmirl Exp $
+# $Id: Makefile.X11,v 1.5 2003/10/21 06:05:41 jonsmirl Exp $
 
 # Mesa 3-D graphics library
 # Version:  5.0
@@ -31,7 +31,8 @@ DRIVER_SOURCES = mgadd.c \
 		 ../common/mm.c \
 		 ../common/utils.c \
 		 ../common/texmem.c \
-		 ../common/vblank.c
+		 ../common/vblank.c \
+		 ../common/xmlconfig.c
 
 FULL_DRIVER_SOURCES = 	\
 		 mgapixel.c \
@@ -39,6 +40,7 @@ FULL_DRIVER_SOURCES = 	\
 		 mgatex.c \
 		 mgatexmem.c \
 		 mga_texstate.c \
+		 mga_texcombine.c \
 		 mgavb.c \
 		 mga_xmesa.c
 
diff --git a/src/mesa/drivers/dri/mga/mga_texcombine.c b/src/mesa/drivers/dri/mga/mga_texcombine.c
new file mode 100644
index 0000000000..f0664e37cf
--- /dev/null
+++ b/src/mesa/drivers/dri/mga/mga_texcombine.c
@@ -0,0 +1,647 @@
+/*
+ * Copyright (c) 2003 Ville Syrjala
+ *
+ * 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
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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:
+ *    Ville Syrjala <syrjala@sci.fi>
+ */
+
+#include "glheader.h"
+
+#include "mgacontext.h"
+#include "mgatex.h"
+#include "mgaregs.h"
+
+/*
+ * GL_ARB_texture_env_combine
+ * GL_EXT_texture_env_combine
+ * GL_ARB_texture_env_crossbar
+ * GL_ATI_texture_env_combine3
+ */
+
+#define ARG_DISABLE 0xffffffff
+#define MGA_ARG1  0
+#define MGA_ARG2  1
+#define MGA_ALPHA 2
+
+GLboolean mgaUpdateTextureEnvCombine( GLcontext *ctx, int unit )
+{
+   mgaContextPtr mmesa = MGA_CONTEXT(ctx);
+   const int source = mmesa->tmu_source[unit];
+   const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[source];
+   GLuint *reg = ((GLuint *)&mmesa->setup.tdualstage0 + unit);
+   GLuint numColorArgs = 0, numAlphaArgs = 0;
+   GLuint arg1[3], arg2[3], alpha[3];
+   int args[3];
+   int i;
+
+   switch (texUnit->CombineModeRGB) {
+   case GL_REPLACE:
+      numColorArgs = 1;
+      break;
+   case GL_MODULATE:
+   case GL_ADD:
+   case GL_ADD_SIGNED:
+   case GL_SUBTRACT:
+      numColorArgs = 2;
+      break;
+   case GL_INTERPOLATE:
+   case GL_MODULATE_ADD_ATI:
+   case GL_MODULATE_SIGNED_ADD_ATI:
+   case GL_MODULATE_SUBTRACT_ATI:
+      numColorArgs = 3;
+      break;
+   default:
+      return GL_FALSE;
+   }
+
+   switch (texUnit->CombineModeA) {
+   case GL_REPLACE:
+      numAlphaArgs = 1;
+      break;
+   case GL_MODULATE:
+   case GL_ADD:
+   case GL_ADD_SIGNED:
+   case GL_SUBTRACT:
+      numAlphaArgs = 2;
+      break;
+   default:
+      return GL_FALSE;
+   }
+
+   /* Start fresh :) */
+   *reg = 0;
+
+   /* COLOR */
+   for (i = 0; i < 3; i++) {
+      arg1[i] = 0;
+      arg2[i] = 0;
+      alpha[i] = 0;
+   }
+
+   for (i = 0;i < numColorArgs; i++) {
+      switch (texUnit->CombineSourceRGB[i]) {
+      case GL_TEXTURE:
+         arg1[i] |= 0;
+         arg2[i] |= ARG_DISABLE;
+         alpha[i] |= TD0_color_alpha_currtex;
+         break;
+      case GL_TEXTURE0:
+         if (source == 0) {
+            arg1[i] |= 0;
+            arg2[i] |= ARG_DISABLE;
+            alpha[i] |= TD0_color_alpha_currtex;
+         } else {
+            if (ctx->Texture._EnabledUnits != 0x03) {
+               /* disable texturing */
+               mmesa->setup.dwgctl &= DC_opcod_MASK;
+               mmesa->setup.dwgctl |= DC_opcod_trap;
+               mmesa->hw.alpha_sel = AC_alphasel_diffused;
+               /* return GL_TRUE since we don't need a fallback */
+               return GL_TRUE;
+            }
+            arg1[i] |= ARG_DISABLE;
+            arg2[i] |= ARG_DISABLE;
+            alpha[i] |= TD0_color_alpha_prevtex;
+         }
+         break;
+      case GL_TEXTURE1:
+         if (source == 0) {
+            if (ctx->Texture._EnabledUnits != 0x03) {
+               /* disable texturing */
+               mmesa->setup.dwgctl &= DC_opcod_MASK;
+               mmesa->setup.dwgctl |= DC_opcod_trap;
+               mmesa->hw.alpha_sel = AC_alphasel_diffused;
+               /* return GL_TRUE since we don't need a fallback */
+               return GL_TRUE;
+            }
+            arg1[i] |= ARG_DISABLE;
+            /* G400 specs (TDUALSTAGE0) */
+            arg2[i] |= TD0_color_arg2_prevstage;
+            alpha[i] |= TD0_color_alpha_prevstage;
+         } else {
+            arg1[i] |= 0;
+            arg2[i] |= ARG_DISABLE;
+            alpha[i] |= TD0_color_alpha_currtex;
+         }
+         break;
+      case GL_CONSTANT:
+         arg1[i] |= ARG_DISABLE;
+         arg2[i] |= TD0_color_arg2_fcol;
+         alpha[i] |= TD0_color_alpha_fcol;
+         break;
+      case GL_PRIMARY_COLOR:
+         arg1[i] |= ARG_DISABLE;
+         /* G400 specs (TDUALSTAGE1) */
+         if (unit == 0 || (mmesa->setup.tdualstage0 &
+                           ((TD0_color_sel_mul & TD0_color_sel_add) |
+                            (TD0_alpha_sel_mul & TD0_alpha_sel_add)))) {
+            arg2[i] |= TD0_color_arg2_diffuse;
+            alpha[i] |= TD0_color_alpha_diffuse;
+         } else {
+            arg2[i] |= ARG_DISABLE;
+            alpha[i] |= ARG_DISABLE;
+         }
+         break;
+      case GL_PREVIOUS:
+         arg1[i] |= ARG_DISABLE;
+         if (unit == 0) {
+            arg2[i] |= TD0_color_arg2_diffuse;
+            alpha[i] |= TD0_color_alpha_diffuse;
+         } else {
+            arg2[i] |= TD0_color_arg2_prevstage;
+            alpha[i] |= TD0_color_alpha_prevstage;
+         }
+         break;
+      default:
+         return GL_FALSE;
+      }
+
+      switch (texUnit->CombineOperandRGB[i]) {
+      case GL_SRC_COLOR:
+         arg1[i] |= 0;
+         arg2[i] |= 0;
+         alpha[i] |= ARG_DISABLE;
+         break;
+      case GL_ONE_MINUS_SRC_COLOR:
+         arg1[i] |= TD0_color_arg1_inv_enable;
+         arg2[i] |= TD0_color_arg2_inv_enable;
+         alpha[i] |= ARG_DISABLE;
+         break;
+      case GL_SRC_ALPHA:
+         arg1[i] |= TD0_color_arg1_replicatealpha_enable;
+         arg2[i] |= TD0_color_arg2_replicatealpha_enable;
+         alpha[i] |= 0;
+         break;
+      case GL_ONE_MINUS_SRC_ALPHA:
+         arg1[i] |= (TD0_color_arg1_replicatealpha_enable |
+                     TD0_color_arg1_inv_enable);
+         arg2[i] |= (TD0_color_arg2_replicatealpha_enable |
+                     TD0_color_arg2_inv_enable);
+         alpha[i] |= (TD0_color_alpha1inv_enable |
+                      TD0_color_alpha2inv_enable);
+         break;
+      }
+   }
+
+   switch (texUnit->CombineModeRGB) {
+   case GL_MODULATE_ADD_ATI:
+   case GL_MODULATE_SIGNED_ADD_ATI:
+      /* Special handling for ATI_texture_env_combine3.
+       * If Arg1 == Arg0 or Arg1 == Arg2 we can use arg1 or arg2 as input for
+       * both multiplier and adder.
+       */
+      /* Arg1 == arg1 */
+      if (arg1[1] == arg1[0]) {
+         if ((arg1[1] | arg2[2]) != ARG_DISABLE) {
+            *reg |= arg1[1] | arg2[2];
+            args[0] = MGA_ARG1; args[1] = MGA_ARG1; args[2] = MGA_ARG2;
+            break;
+         } else
+         if ((arg1[1] | alpha[2]) != ARG_DISABLE) {
+            *reg |= arg1[1] | alpha[2];
+            args[0] = MGA_ARG1; args[1] = MGA_ARG1; args[2] = MGA_ALPHA;
+            break;
+         }
+      }
+      if (arg1[1] == arg1[2]) {
+         if ((arg1[1] | arg2[0]) != ARG_DISABLE) {
+            *reg |= arg1[1] | arg2[0];
+            args[0] = MGA_ARG2; args[1] = MGA_ARG1; args[2] = MGA_ARG1;
+            break;
+         } else
+         if ((arg1[1] | alpha[0]) != ARG_DISABLE) {
+            *reg |= arg1[1] | alpha[0];
+            args[0] = MGA_ALPHA; args[1] = MGA_ARG1; args[2] = MGA_ARG1;
+            break;
+         }
+      }
+      /* fallthrough */
+   case GL_MODULATE_SUBTRACT_ATI:
+      /* Arg1 == arg2 */
+      if (arg2[1] == arg2[0]) {
+         if ((arg2[1] | arg1[2]) != ARG_DISABLE) {
+            *reg |= arg2[1] | arg1[2];
+            args[0] = MGA_ARG2; args[1] = MGA_ARG2; args[2] = MGA_ARG1;
+            break;
+         } else
+         if ((arg2[1] | alpha[2]) != ARG_DISABLE) {
+            *reg |= arg2[1] | alpha[2];
+            args[0] = MGA_ARG2; args[1] = MGA_ARG2; args[2] = MGA_ALPHA;
+            break;
+         }
+      }
+      if (arg2[1] == arg2[2]) {
+         if ((arg2[1] | arg1[0]) != ARG_DISABLE) {
+            *reg |= arg2[1] | arg1[0];
+            args[0] = MGA_ARG1; args[1] = MGA_ARG2; args[2] = MGA_ARG2;
+            break;
+         } else
+         if ((arg2[1] | alpha[0]) != ARG_DISABLE) {
+            *reg |= arg2[1] | alpha[0];
+            args[0] = MGA_ALPHA; args[1] = MGA_ARG2; args[2] = MGA_ARG2;
+            break;
+         }
+      }
+      /* fallthrough */
+   default:
+      /* Find working combo of arg1, arg2 and alpha.
+       *
+       * Keep the Arg0 != alpha cases first since there's
+       * no way to get alpha out by itself (GL_REPLACE).
+       *
+       * Keep the Arg2 == alpha cases first because only alpha has the
+       * capabilities to function as Arg2 (GL_INTERPOLATE). Also good for 
+       * GL_ADD, GL_ADD_SIGNED, GL_SUBTRACT since we can't get alpha to the
+       * adder.
+       *
+       * Keep the Arg1 == alpha cases last for GL_MODULATE_ADD_ATI,
+       * GL_MODULATE_SIGNED_ADD_ATI. Again because we can't get alpha to the
+       * adder.
+       *
+       * GL_MODULATE_SUBTRACT_ATI needs special treatment since it requires
+       * that Arg1 == arg2. This requirement clashes with those of other modes.
+       */
+      if ((arg1[0] | arg2[1] | alpha[2]) != ARG_DISABLE) {
+         *reg |= arg1[0] | arg2[1] | alpha[2];
+         args[0] = MGA_ARG1; args[1] = MGA_ARG2; args[2] = MGA_ALPHA;
+      } else
+      if ((arg1[1] | arg2[0] | alpha[2]) != ARG_DISABLE &&
+          texUnit->CombineModeRGB != GL_MODULATE_SUBTRACT_ATI) {
+         *reg |= arg1[1] | arg2[0] | alpha[2];
+         args[0] = MGA_ARG2; args[1] = MGA_ARG1; args[2] = MGA_ALPHA;
+      } else
+      if ((arg1[1] | arg2[2] | alpha[0]) != ARG_DISABLE &&
+          texUnit->CombineModeRGB != GL_MODULATE_SUBTRACT_ATI) {
+         *reg |= arg1[1] | arg2[2] | alpha[0];
+         args[0] = MGA_ALPHA; args[1] = MGA_ARG1; args[2] = MGA_ARG2;
+      } else
+      if ((arg1[2] | arg2[1] | alpha[0]) != ARG_DISABLE) {
+         *reg |= arg1[2] | arg2[1] | alpha[0];
+         args[0] = MGA_ALPHA; args[1] = MGA_ARG2; args[2] = MGA_ARG1;
+      } else
+      if ((arg1[0] | arg2[2] | alpha[1]) != ARG_DISABLE) {
+         *reg |= arg1[0] | arg2[2] | alpha[1];
+         args[0] = MGA_ARG1; args[1] = MGA_ALPHA; args[2] = MGA_ARG2;
+      } else
+      if ((arg1[2] | arg2[0] | alpha[1]) != ARG_DISABLE) {
+         *reg |= arg1[2] | arg2[0] | alpha[1];
+         args[0] = MGA_ARG2; args[1] = MGA_ALPHA; args[2] = MGA_ARG1;
+      } else {
+         /* nothing suitable */
+         return GL_FALSE;
+      }
+   }
+
+   switch (texUnit->CombineModeRGB) {
+   case GL_REPLACE:
+      if (texUnit->CombineScaleShiftRGB) {
+         return GL_FALSE;
+      }
+
+      if (args[0] == MGA_ARG1) {
+         *reg |= TD0_color_sel_arg1;
+      } else if (args[0] == MGA_ARG2) {
+         *reg |= TD0_color_sel_arg2;
+      } else if (args[0] == MGA_ALPHA) {
+         /* Can't get alpha out by itself */
+         return GL_FALSE;
+      }
+      break;
+   case GL_MODULATE:
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_modbright_2x;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         *reg |= TD0_color_modbright_4x;
+      }
+
+      *reg |= TD0_color_sel_mul;
+
+      if (args[0] == MGA_ALPHA || args[1] == MGA_ALPHA) {
+         if (args[0] == MGA_ARG1 || args[1] == MGA_ARG1) {
+            *reg |= TD0_color_arg2mul_alpha2;
+         } else if (args[0] == MGA_ARG2 || args[1] == MGA_ARG2) {
+            *reg |= TD0_color_arg1mul_alpha1;
+         }
+      }
+      break;
+   case GL_ADD_SIGNED:
+      *reg |= TD0_color_addbias_enable;
+      /* fallthrough */
+   case GL_ADD:
+      if (args[0] == MGA_ALPHA || args[1] == MGA_ALPHA){
+         /* Can't get alpha to the adder */
+         return GL_FALSE;
+      }
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_add2x_enable;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_color_add_add |
+               TD0_color_sel_add);
+      break;
+   case GL_INTERPOLATE:
+      if (args[2] != MGA_ALPHA) {
+         /* Only alpha can function as Arg2 */
+         return GL_FALSE;
+      }
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_add2x_enable;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_color_arg1mul_alpha1 |
+               TD0_color_blend_enable |
+               TD0_color_arg1add_mulout |
+               TD0_color_arg2add_mulout |
+               TD0_color_add_add |
+               TD0_color_sel_add);
+
+      /* Have to do this with xor since GL_ONE_MINUS_SRC_ALPHA may have
+       * already touched this bit.
+       */
+      *reg ^= TD0_color_alpha1inv_enable;
+
+      if (args[0] == MGA_ARG2) {
+         /* Swap arguments */
+         *reg ^= (TD0_color_arg1mul_alpha1 |
+                  TD0_color_arg2mul_alpha2 |
+                  TD0_color_alpha1inv_enable |
+                  TD0_color_alpha2inv_enable);
+      }
+
+      if (ctx->Texture._EnabledUnits != 0x03) {
+         /* Linear blending mode needs dualtex enabled */
+         *(reg+1) = (TD0_color_arg2_prevstage |
+                     TD0_color_sel_arg2 |
+                     TD0_alpha_arg2_prevstage |
+                     TD0_alpha_sel_arg2);
+         mmesa->dualtex_env = GL_TRUE;
+      }
+      break;
+   case GL_SUBTRACT:
+      if (args[0] == MGA_ALPHA || args[1] == MGA_ALPHA) {
+         /* Can't get alpha to the adder */
+         return GL_FALSE;
+      }
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_add2x_enable;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_color_add_sub |
+               TD0_color_sel_add);
+
+      if (args[0] == MGA_ARG2) {
+         /* Swap arguments */
+         *reg ^= (TD0_color_arg1_inv_enable |
+                  TD0_color_arg2_inv_enable);
+      }
+      break;
+   case GL_MODULATE_SIGNED_ADD_ATI:
+      *reg |= TD0_color_addbias_enable;
+      /* fallthrough */
+   case GL_MODULATE_ADD_ATI:
+      if (args[1] == MGA_ALPHA) {
+         /* Can't get alpha to the adder */
+         return GL_FALSE;
+      }
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_add2x_enable;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_color_add_add |
+               TD0_color_sel_add);
+
+      if (args[1] == args[0] || args[1] == args[2]) {
+         *reg |= TD0_color_arg1add_mulout;
+         if (args[0] == MGA_ALPHA || args[2] == MGA_ALPHA)
+            *reg |= TD0_color_arg1mul_alpha1;
+
+         if (args[1] == MGA_ARG1) {
+            /* Swap adder arguments */
+            *reg ^= (TD0_color_arg1add_mulout |
+                     TD0_color_arg2add_mulout);
+            if (args[0] == MGA_ALPHA || args[2] == MGA_ALPHA) {
+               /* Swap multiplier arguments */
+               *reg ^= (TD0_color_arg1mul_alpha1 |
+                        TD0_color_arg2mul_alpha2);
+            }
+         }
+      } else {
+         *reg |= (TD0_color_arg2mul_alpha2 |
+                  TD0_color_arg1add_mulout);
+
+         if (args[1] == MGA_ARG1) {
+            /* Swap arguments */
+            *reg ^= (TD0_color_arg1mul_alpha1 |
+                     TD0_color_arg2mul_alpha2 |
+                     TD0_color_arg1add_mulout |
+                     TD0_color_arg2add_mulout);
+         }
+      }
+      break;
+   case GL_MODULATE_SUBTRACT_ATI:
+      if (args[1] != MGA_ARG2) {
+         /* Can't swap arguments */
+         return GL_FALSE;
+      }
+      if (texUnit->CombineScaleShiftRGB == 1) {
+         *reg |= TD0_color_add2x_enable;
+      } else if (texUnit->CombineScaleShiftRGB == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_color_add_sub |
+               TD0_color_sel_add);
+
+      if (args[1] == args[0] || args[1] == args[2]) {
+         *reg |= TD0_color_arg1add_mulout;
+         if (args[0] == MGA_ALPHA || args[2] == MGA_ALPHA)
+            *reg |= TD0_color_arg1mul_alpha1;
+      } else {
+         *reg |= (TD0_color_arg2mul_alpha2 |
+                  TD0_color_arg1add_mulout);
+      }
+      break;
+   }
+
+
+   /* ALPHA */
+   for (i = 0; i < 2; i++) {
+      arg1[i] = 0;
+      arg2[i] = 0;
+   }
+
+   for (i = 0; i < numAlphaArgs; i++) {
+      switch (texUnit->CombineSourceA[i]) {
+      case GL_TEXTURE:
+         arg1[i] |= 0;
+         arg2[i] |= ARG_DISABLE;
+         break;
+      case GL_TEXTURE0:
+         if (source == 0) {
+            arg1[i] |= 0;
+            arg2[i] |= ARG_DISABLE;
+         } else {
+            if (ctx->Texture._EnabledUnits != 0x03) {
+               /* disable texturing */
+               mmesa->setup.dwgctl &= DC_opcod_MASK;
+               mmesa->setup.dwgctl |= DC_opcod_trap;
+               mmesa->hw.alpha_sel = AC_alphasel_diffused;
+               /* return GL_TRUE since we don't need a fallback */
+               return GL_TRUE;
+            }
+            arg1[i] |= ARG_DISABLE;
+            arg2[i] |= TD0_alpha_arg2_prevtex;
+         }
+         break;
+      case GL_TEXTURE1:
+         if (source == 0) {
+            if (ctx->Texture._EnabledUnits != 0x03) {
+               /* disable texturing */
+               mmesa->setup.dwgctl &= DC_opcod_MASK;
+               mmesa->setup.dwgctl |= DC_opcod_trap;
+               mmesa->hw.alpha_sel = AC_alphasel_diffused;
+               /* return GL_TRUE since we don't need a fallback */
+               return GL_TRUE;
+            }
+            arg1[i] |= ARG_DISABLE;
+            /* G400 specs (TDUALSTAGE0) */
+            arg2[i] |= TD0_alpha_arg2_prevstage;
+         } else {
+            arg1[i] |= 0;
+            arg2[i] |= ARG_DISABLE;
+         }
+         break;
+      case GL_CONSTANT:
+         arg1[i] |= ARG_DISABLE;
+         arg2[i] |= TD0_alpha_arg2_fcol;
+         break;
+      case GL_PRIMARY_COLOR:
+         arg1[i] |= ARG_DISABLE;
+         /* G400 specs (TDUALSTAGE1) */
+         if (unit == 0 || (mmesa->setup.tdualstage0 &
+                           ((TD0_color_sel_mul & TD0_color_sel_add) |
+                            (TD0_alpha_sel_mul & TD0_alpha_sel_add)))) {
+            arg2[i] |= TD0_alpha_arg2_diffuse;
+         } else {
+            arg2[i] |= ARG_DISABLE;
+         }
+         break;
+      case GL_PREVIOUS:
+         arg1[i] |= ARG_DISABLE;
+         if (unit == 0) {
+            arg2[i] |= TD0_alpha_arg2_diffuse;
+         } else {
+            arg2[i] |= TD0_alpha_arg2_prevstage;
+         }
+         break;
+      default:
+         return GL_FALSE;
+      }
+
+      switch (texUnit->CombineOperandA[i]) {
+      case GL_SRC_ALPHA:
+         arg1[i] |= 0;
+         arg2[i] |= 0;
+         break;
+      case GL_ONE_MINUS_SRC_ALPHA:
+         arg1[i] |= TD0_alpha_arg1_inv_enable;
+         arg2[i] |= TD0_alpha_arg2_inv_enable;
+         break;
+      }
+   }
+
+   /* Find a working combo of arg1 and arg2 */
+   if ((arg1[0] | arg2[1]) != ARG_DISABLE) {
+      *reg |= arg1[0] | arg2[1];
+      args[0] = MGA_ARG1; args[1] = MGA_ARG2;
+   } else
+   if ((arg1[1] | arg2[0]) != ARG_DISABLE) {
+      *reg |= arg1[1] | arg2[0];
+      args[0] = MGA_ARG2; args[1] = MGA_ARG1;
+   } else {
+      /* nothing suitable */
+      return GL_FALSE;
+   }
+
+   switch (texUnit->CombineModeA) {
+   case GL_REPLACE:
+      if (texUnit->CombineScaleShiftA) {
+         return GL_FALSE;
+      }
+
+      if (args[0] == MGA_ARG1){
+         *reg |= TD0_alpha_sel_arg1;
+      } else if (args[0] == MGA_ARG2) {
+         *reg |= TD0_alpha_sel_arg2;
+      }
+      break;
+   case GL_MODULATE:
+      if (texUnit->CombineScaleShiftA == 1) {
+         *reg |= TD0_alpha_modbright_2x;
+      } else if (texUnit->CombineScaleShiftA == 2) {
+         *reg |= TD0_alpha_modbright_4x;
+      }
+
+      *reg |= TD0_alpha_sel_mul;
+      break;
+   case GL_ADD_SIGNED:
+      *reg |= TD0_alpha_addbias_enable;
+      /* fallthrough */
+   case GL_ADD:
+      if (texUnit->CombineScaleShiftA == 1) {
+         *reg |= TD0_alpha_add2x_enable;
+      } else if (texUnit->CombineScaleShiftA == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_alpha_add_enable |
+               TD0_alpha_sel_add);
+      break;
+   case GL_SUBTRACT:
+      if (texUnit->CombineScaleShiftA == 1) {
+         *reg |= TD0_alpha_add2x_enable;
+      } else if (texUnit->CombineScaleShiftA == 2) {
+         return GL_FALSE;
+      }
+
+      *reg |= (TD0_alpha_add_disable |
+               TD0_alpha_sel_add);
+
+      if (args[0] == MGA_ARG2) {
+         /* Swap arguments */
+         *reg ^= (TD0_alpha_arg1_inv_enable |
+                  TD0_alpha_arg2_inv_enable);
+      }
+      break;
+   }
+
+   return GL_TRUE;
+}
+   
+   
diff --git a/src/mesa/drivers/dri/mga/mga_texstate.c b/src/mesa/drivers/dri/mga/mga_texstate.c
index fc1406cab9..5f3e1b1bac 100644
--- a/src/mesa/drivers/dri/mga/mga_texstate.c
+++ b/src/mesa/drivers/dri/mga/mga_texstate.c
@@ -52,6 +52,8 @@ static const unsigned TMC_tformat[ TMC_nr_tformat ] =
     [MESA_FORMAT_RGB565]   = TMC_tformat_tw16 | TMC_takey_1 | TMC_tamask_0,
     [MESA_FORMAT_ARGB4444] = TMC_tformat_tw12 | TMC_takey_1 | TMC_tamask_0,
     [MESA_FORMAT_ARGB1555] = TMC_tformat_tw15 | TMC_takey_1 | TMC_tamask_0,
+    [MESA_FORMAT_AL88]     = TMC_tformat_tw8al | TMC_takey_1 | TMC_tamask_0,
+    [MESA_FORMAT_I8]       = TMC_tformat_tw8a | TMC_takey_1 | TMC_tamask_0,
     [MESA_FORMAT_CI8]      = TMC_tformat_tw8  | TMC_takey_1 | TMC_tamask_0,
     [MESA_FORMAT_YCBCR]     = TMC_tformat_tw422uyvy | TMC_takey_1 | TMC_tamask_0,
     [MESA_FORMAT_YCBCR_REV] = TMC_tformat_tw422 | TMC_takey_1 | TMC_tamask_0,
@@ -67,7 +69,7 @@ mgaSetTexImages( mgaContextPtr mmesa,
     GLint totalSize;
     GLint width, height;
     GLint i;
-    GLint firstLevel, lastLevel, numLevels;
+    GLint numLevels;
     GLint log2Width, log2Height;
     GLuint txformat = 0;
     GLint ofs;
@@ -81,6 +83,8 @@ mgaSetTexImages( mgaContextPtr mmesa,
 	case MESA_FORMAT_RGB565:   txformat = TMC_tformat_tw16; break;
 	case MESA_FORMAT_ARGB4444: txformat = TMC_tformat_tw12;	break;
 	case MESA_FORMAT_ARGB1555: txformat = TMC_tformat_tw15; break;
+	case MESA_FORMAT_AL88:     txformat = TMC_tformat_tw8al; break;
+	case MESA_FORMAT_I8:       txformat = TMC_tformat_tw8a; break;
 	case MESA_FORMAT_CI8:      txformat = TMC_tformat_tw8;  break;
         case MESA_FORMAT_YCBCR:    txformat  = TMC_tformat_tw422uyvy; break;
         case MESA_FORMAT_YCBCR_REV: txformat = TMC_tformat_tw422; break;
@@ -101,39 +105,21 @@ mgaSetTexImages( mgaContextPtr mmesa,
 
 #endif /* MGA_USE_TABLE_FOR_FORMAT */
 
-   if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
-      /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
-       */
-
-      firstLevel = lastLevel = tObj->BaseLevel;
-   } else {
-      /* Compute which mipmap levels we really want to send to the hardware.
-       * This depends on the base image size, GL_TEXTURE_MIN_LOD,
-       * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
-       * Yes, this looks overly complicated, but it's all needed.
-       */
-
-      firstLevel = tObj->BaseLevel + (GLint)(tObj->MinLod + 0.5);
-      firstLevel = MAX2(firstLevel, tObj->BaseLevel);
-      lastLevel = tObj->BaseLevel + (GLint)(tObj->MaxLod + 0.5);
-      lastLevel = MAX2(lastLevel, tObj->BaseLevel);
-      lastLevel = MIN2(lastLevel, tObj->BaseLevel + baseImage->MaxLog2);
-      lastLevel = MIN2(lastLevel, tObj->MaxLevel);
-      lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
-   }
+   driCalculateTextureFirstLastLevel( (driTextureObject *) t );
+   log2Width  = tObj->Image[t->base.firstLevel]->WidthLog2;
+   log2Height = tObj->Image[t->base.firstLevel]->HeightLog2;
 
-   log2Width = tObj->Image[firstLevel]->WidthLog2;
-   log2Height = tObj->Image[firstLevel]->HeightLog2;
-   width = tObj->Image[firstLevel]->Width;
-   height = tObj->Image[firstLevel]->Height;
+   width = tObj->Image[t->base.firstLevel]->Width;
+   height = tObj->Image[t->base.firstLevel]->Height;
 
-   numLevels = MIN2( lastLevel - firstLevel + 1,
+   numLevels = MIN2( t->base.lastLevel - t->base.firstLevel + 1,
                      MGA_IS_G200(mmesa) ? G200_TEX_MAXLEVELS : G400_TEX_MAXLEVELS);
 
 
    totalSize = 0;
    for ( i = 0 ; i < numLevels ; i++ ) {
-      const struct gl_texture_image * const texImage = tObj->Image[i+firstLevel];
+      const struct gl_texture_image * const texImage = 
+	  tObj->Image[ i + t->base.firstLevel ];
 
       if ( (texImage == NULL)
 	   || ((i != 0)
@@ -149,13 +135,9 @@ mgaSetTexImages( mgaContextPtr mmesa,
                      baseImage->TexFormat->TexelBytes) + 31) & ~31;
    }
 
-   numLevels = i;
-   lastLevel = firstLevel + numLevels - 1;
-
    /* save these values */
-   t->base.firstLevel = firstLevel;
-   t->base.lastLevel = lastLevel;
-
+   numLevels = i;
+   t->base.lastLevel = t->base.firstLevel + numLevels - 1;
    t->base.totalSize = totalSize;
 
    /* setup hardware register values */
@@ -225,7 +207,7 @@ static void mgaUpdateTextureEnvG200( GLcontext *ctx, GLuint unit )
       t->setup.texctl2 |= TMC_decalblend_enable;
       break;
    case GL_BLEND:
-      FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
+      t->texenv_fallback = GL_TRUE;
       break;
    default:
       break;
@@ -251,29 +233,160 @@ static const GLuint g400_color_combine[][MGA_MAX_COMBFUNC] =
       (0),
 
       /* GL_REPLACE
+       * Cv = Cs
+       * Av = Af
        */
       (TD0_color_sel_arg1 |
        TD0_alpha_arg2_diffuse |
-       TD0_alpha_sel_arg2 ),
+       TD0_alpha_sel_arg2),
       
       /* GL_MODULATE
+       * Cv = Cf Cs
+       * Av = Af
        */
       (TD0_color_arg2_diffuse |
        TD0_color_sel_mul |
        TD0_alpha_arg2_diffuse |
-       TD0_alpha_sel_mul),
+       TD0_alpha_sel_arg2),
       
       /* GL_DECAL
+       * Cv = Cs
+       * Av = Af
        */
       (TD0_color_sel_arg1 |
        TD0_alpha_arg2_diffuse |
        TD0_alpha_sel_arg2),
       
-      /* GL_BLEND
+      /* GL_BLEND (Cc=0.0)
+       * Cv = Cf ( 1 - Cs )
+       * Av = Af
+       */
+      (TD0_color_arg1_inv_enable |
+       TD0_color_arg2_diffuse |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_diffuse |
+       TD0_alpha_sel_arg2),
+      
+      /* GL_ADD
+       * Cv = Cf + Cs
+       * Av = Af
+       */
+      (TD0_color_arg2_diffuse |
+       TD0_color_add_add |
+       TD0_color_sel_add |
+       TD0_alpha_arg2_diffuse |
+       TD0_alpha_sel_arg2),
+   },
+   
+   /* Unit 1:
+    */
+   {
+      /* Disable combiner stage
        */
       (0),
+       
+      /* GL_REPLACE
+       * Cv = Cs
+       * Av = Ap
+       */
+      (TD0_color_sel_arg1 |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_arg2),
+      
+      /* GL_MODULATE
+       * Cv = Cp Cs
+       * Av = Ap
+       */
+      (TD0_color_arg2_prevstage |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_arg2),
+
+      /* GL_DECAL
+       * Cv = Cs
+       * Av = Ap
+       */
+      (TD0_color_sel_arg1 |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_arg2),
+      
+      /* GL_BLEND (Cc=0.0)
+       * Cv = Cp ( 1 - Cs )
+       * Av = Ap
+       */
+      (TD0_color_arg1_inv_enable |
+       TD0_color_arg2_prevstage |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_arg2),
+      
+      /* GL_ADD
+       * Cv = Cp + Cs
+       * Av = Ap
+       */
+      (TD0_color_arg2_prevstage |
+       TD0_color_add_add |
+       TD0_color_sel_add |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_arg2),
+   },
+};
+
+static const GLuint g400_color_alpha_combine[][MGA_MAX_COMBFUNC] =
+{
+   /* Unit 0:
+    */
+   {
+      /* Disable combiner stage
+       */
+      (0),
+
+      /* GL_REPLACE
+       * Cv = Cs
+       * Av = As
+       */
+      (TD0_color_sel_arg1 |
+       TD0_alpha_sel_arg1),
+      
+      /* GL_MODULATE
+       * Cv = Cf Cs
+       * Av = Af As
+       */
+      (TD0_color_arg2_diffuse |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_diffuse |
+       TD0_alpha_sel_mul),
+      
+      /* GL_DECAL
+       * tmp = Cf ( 1 - As )
+       * Cv = tmp + Cs As
+       * Av = Af
+       */
+      (TD0_color_arg2_diffuse |
+       TD0_color_alpha_currtex |
+       TD0_color_alpha1inv_enable |
+       TD0_color_arg1mul_alpha1 |
+       TD0_color_blend_enable |
+       TD0_color_arg1add_mulout |
+       TD0_color_arg2add_mulout |
+       TD0_color_add_add |
+       TD0_color_sel_add |
+       TD0_alpha_arg2_diffuse |
+       TD0_alpha_sel_arg2),
+
+      /* GL_BLEND (Cc=0.0)
+       * Cv = Cf ( 1 - Cs )
+       * Av = Af As
+       */
+      (TD0_color_arg1_inv_enable |
+       TD0_color_arg2_diffuse |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_diffuse |
+       TD0_alpha_sel_mul),
       
       /* GL_ADD
+       * Cv = Cf + Cs
+       * Av = Af As
        */
       (TD0_color_arg2_diffuse |
        TD0_color_add_add |
@@ -290,33 +403,53 @@ static const GLuint g400_color_combine[][MGA_MAX_COMBFUNC] =
       (0),
        
       /* GL_REPLACE
+       * Cv = Cs
+       * Av = As
        */
       (TD0_color_sel_arg1 |
-       TD0_alpha_arg2_diffuse |
-       TD0_alpha_sel_arg2 ),
+       TD0_alpha_sel_arg1),
       
       /* GL_MODULATE
+       * Cv = Cp Cs
+       * Av = Ap As
        */
       (TD0_color_arg2_prevstage |
-       TD0_color_alpha_prevstage |
        TD0_color_sel_mul |
        TD0_alpha_arg2_prevstage |
        TD0_alpha_sel_mul),
 
       /* GL_DECAL
+       * tmp = Cp ( 1 - As )
+       * Cv = tmp + Cs As
+       * Av = Ap
        */
-      (TD0_color_sel_arg1 |
+      (TD0_color_arg2_prevstage |
+       TD0_color_alpha_currtex |
+       TD0_color_alpha1inv_enable |
+       TD0_color_arg1mul_alpha1 |
+       TD0_color_blend_enable |
+       TD0_color_arg1add_mulout |
+       TD0_color_arg2add_mulout |
+       TD0_color_add_add |
+       TD0_color_sel_add |
        TD0_alpha_arg2_prevstage |
-       TD0_alpha_sel_arg2 ),
+       TD0_alpha_sel_arg2),
       
-      /* GL_BLEND
+      /* GL_BLEND (Cc=0.0)
+       * Cv = Cp ( 1 - Cs )
+       * Av = Ap As
        */
-      (0),
+      (TD0_color_arg1_inv_enable |
+       TD0_color_arg2_prevstage |
+       TD0_color_sel_mul |
+       TD0_alpha_arg2_prevstage |
+       TD0_alpha_sel_mul),
       
       /* GL_ADD
+       * Cv = Cp + Cs
+       * Av = Ap As
        */
       (TD0_color_arg2_prevstage |
-       TD0_color_alpha_prevstage |
        TD0_color_add_add |
        TD0_color_sel_add |
        TD0_alpha_arg2_prevstage |
@@ -334,20 +467,25 @@ static const GLuint g400_alpha_combine[][MGA_MAX_COMBFUNC] =
       (0),
 
       /* GL_REPLACE
+       * Cv = Cf
+       * Av = As
        */
-      (TD0_color_sel_arg2 |
-       TD0_color_arg2_diffuse |
-       TD0_alpha_sel_arg1 ),
+      (TD0_color_arg2_diffuse |
+       TD0_color_sel_arg2 |
+       TD0_alpha_sel_arg1),
       
       /* GL_MODULATE
-       * FIXME: Is this correct?
+       * Cv = Cf
+       * Av = Af As
        */
       (TD0_color_arg2_diffuse |
-       TD0_color_sel_mul |
+       TD0_color_sel_arg2 |
        TD0_alpha_arg2_diffuse |
        TD0_alpha_sel_mul),
 
-      /* GL_DECAL
+      /* GL_DECAL (undefined)
+       * Cv = Cf
+       * Av = Af
        */
       (TD0_color_arg2_diffuse |
        TD0_color_sel_arg2 |
@@ -355,16 +493,20 @@ static const GLuint g400_alpha_combine[][MGA_MAX_COMBFUNC] =
        TD0_alpha_sel_arg2),
 
       /* GL_BLEND
+       * Cv = Cf
+       * Av = Af As
        */
       (TD0_color_arg2_diffuse |
-       TD0_color_sel_mul |
+       TD0_color_sel_arg2 |
        TD0_alpha_arg2_diffuse |
        TD0_alpha_sel_mul),
 
       /* GL_ADD
+       * Cv = Cf
+       * Av = Af As
        */
       (TD0_color_arg2_diffuse |
-       TD0_color_sel_mul |
+       TD0_color_sel_arg2 |
        TD0_alpha_arg2_diffuse |
        TD0_alpha_sel_mul),
    },
@@ -377,21 +519,25 @@ static const GLuint g400_alpha_combine[][MGA_MAX_COMBFUNC] =
       (0),
 
       /* GL_REPLACE
+       * Cv = Cp
+       * Av = As
        */
-      (TD0_color_sel_arg2 |
-       TD0_color_arg2_diffuse |
-       TD0_alpha_sel_arg1 ),
+      (TD0_color_arg2_prevstage |
+       TD0_color_sel_arg2 |
+       TD0_alpha_sel_arg1),
       
       /* GL_MODULATE
-       * FIXME: Is this correct?
+       * Cv = Cp
+       * Av = Ap As
        */
       (TD0_color_arg2_prevstage |
-       TD0_color_alpha_prevstage |
-       TD0_color_sel_mul |
+       TD0_color_sel_arg2 |
        TD0_alpha_arg2_prevstage |
        TD0_alpha_sel_mul),
 
-      /* GL_DECAL
+      /* GL_DECAL (undefined)
+       * Cv = Cp
+       * Av = Ap
        */
       (TD0_color_arg2_prevstage |
        TD0_color_sel_arg2 |
@@ -399,16 +545,20 @@ static const GLuint g400_alpha_combine[][MGA_MAX_COMBFUNC] =
        TD0_alpha_sel_arg2),
 
       /* GL_BLEND
+       * Cv = Cp
+       * Av = Ap As
        */
-      (TD0_color_arg2_diffuse |
-       TD0_color_sel_mul |
-       TD0_alpha_arg2_diffuse |
+      (TD0_color_arg2_prevstage |
+       TD0_color_sel_arg2 |
+       TD0_alpha_arg2_prevstage |
        TD0_alpha_sel_mul),
 
       /* GL_ADD
+       * Cv = Cp
+       * Av = Ap As
        */
       (TD0_color_arg2_prevstage |
-       TD0_color_sel_mul |
+       TD0_color_sel_arg2 |
        TD0_alpha_arg2_prevstage |
        TD0_alpha_sel_mul),
    },
@@ -421,143 +571,236 @@ static void mgaUpdateTextureEnvG400( GLcontext *ctx, GLuint unit )
    const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[source];
    const struct gl_texture_object *tObj = texUnit->_Current;
    GLuint *reg = ((GLuint *)&mmesa->setup.tdualstage0 + unit);
+   mgaTextureObjectPtr t;
    GLenum format;
 
-   if ( tObj != ctx->Texture.Unit[source].Current2D || !tObj ) 
+   if ( !tObj ||
+        (tObj != ctx->Texture.Unit[source].Current2D &&
+         tObj != ctx->Texture.Unit[source].CurrentRect) )
       return;
 
    format = tObj->Image[tObj->BaseLevel]->Format;
 
+   t = (mgaTextureObjectPtr) tObj->DriverData;
+
    switch (ctx->Texture.Unit[source].EnvMode) {
    case GL_REPLACE:
-      if (format == GL_RGB || format == GL_LUMINANCE) {
-	 *reg = g400_color_combine[unit][MGA_REPLACE];
-      }
-      else if (format == GL_ALPHA) {
+      if (format == GL_ALPHA) {
          *reg = g400_alpha_combine[unit][MGA_REPLACE];
-      }
-      else {
-         *reg = (TD0_color_sel_arg1 |
-                 TD0_alpha_sel_arg1 );
+      } else if (format == GL_RGB || format == GL_LUMINANCE) {
+         *reg = g400_color_combine[unit][MGA_REPLACE];
+      } else {
+         *reg = g400_color_alpha_combine[unit][MGA_REPLACE];
       }
       break;
 
    case GL_MODULATE:
-      *reg = g400_color_combine[unit][MGA_MODULATE];
+      if (format == GL_ALPHA) {
+         *reg = g400_alpha_combine[unit][MGA_MODULATE];
+      } else if (format == GL_RGB || format == GL_LUMINANCE) {
+         *reg = g400_color_combine[unit][MGA_MODULATE];
+      } else {
+         *reg = g400_color_alpha_combine[unit][MGA_MODULATE];
+      }
       break;
+
    case GL_DECAL:
       if (format == GL_RGB) {
-	 *reg = g400_color_combine[unit][MGA_DECAL];
+         *reg = g400_color_combine[unit][MGA_DECAL];
+      } else if (format == GL_RGBA) {
+         *reg = g400_color_alpha_combine[unit][MGA_DECAL];
+         if (ctx->Texture._EnabledUnits != 0x03) {
+            /* Linear blending mode needs dual texturing enabled */
+            *(reg+1) = (TD0_color_arg2_prevstage |
+                        TD0_color_sel_arg2 |
+                        TD0_alpha_arg2_prevstage |
+                        TD0_alpha_sel_arg2);
+            mmesa->dualtex_env = GL_TRUE;
+         }
+      } else {
+         /* Undefined */
+         *reg = g400_alpha_combine[unit][MGA_DECAL];
       }
-      else if ( format == GL_RGBA ) {
-#if 0
+      break;
+
+   case GL_ADD:
+      if (format == GL_ALPHA) {
+         *reg = g400_alpha_combine[unit][MGA_ADD];
+      } else if (format == GL_RGB || format == GL_LUMINANCE) {
+         *reg = g400_color_combine[unit][MGA_ADD];
+      } else if (format == GL_RGBA || format == GL_LUMINANCE_ALPHA) {
+         *reg = g400_color_alpha_combine[unit][MGA_ADD];
+      } else if (format == GL_INTENSITY) {
+         /* Cv = Cf + Cs
+          * Av = Af + As
+          */
          if (unit == 0) {
-            /* this doesn't work */
             *reg = (TD0_color_arg2_diffuse |
-                    TD0_color_alpha_currtex |
-                    TD0_color_alpha2inv_enable |
-                    TD0_color_arg2mul_alpha2 |
-                    TD0_color_arg1mul_alpha1 |
-                    TD0_color_blend_enable |
-                    TD0_color_arg1add_mulout |
-                    TD0_color_arg2add_mulout |
                     TD0_color_add_add |
-                    TD0_color_sel_mul |
+                    TD0_color_sel_add |
                     TD0_alpha_arg2_diffuse |
-                    TD0_alpha_sel_arg2 );
-         }
-         else {
+                    TD0_alpha_add_enable |
+                    TD0_alpha_sel_add);
+         } else {
             *reg = (TD0_color_arg2_prevstage |
-                    TD0_color_alpha_currtex |
-                    TD0_color_alpha2inv_enable |
-                    TD0_color_arg2mul_alpha2 |
-                    TD0_color_arg1mul_alpha1 |
                     TD0_color_add_add |
                     TD0_color_sel_add |
                     TD0_alpha_arg2_prevstage |
-                    TD0_alpha_sel_arg2 );
+                    TD0_alpha_add_enable |
+                    TD0_alpha_sel_add);
          }
-#else
-         /* s/w fallback, pretty sure we can't do in h/w */
-	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
-	 if ( MGA_DEBUG & DEBUG_VERBOSE_FALLBACK )
-	    fprintf( stderr, "FALLBACK: GL_DECAL RGBA texture, unit=%d\n",
-		     unit );
-#endif
-      }
-      else {
-	*reg = g400_alpha_combine[unit][MGA_DECAL];
       }
       break;
 
-   case GL_ADD:
-     if (format == GL_INTENSITY) {
-	if (unit == 0) {
-	   *reg = ( TD0_color_arg2_diffuse |
-		   TD0_color_add_add |
-		   TD0_color_sel_add |
-		   TD0_alpha_arg2_diffuse |
-		   TD0_alpha_add_enable |
-		   TD0_alpha_sel_add);
-	}
-	else {
-	   *reg = ( TD0_color_arg2_prevstage |
-		   TD0_color_add_add |
-		   TD0_color_sel_add |
-		   TD0_alpha_arg2_prevstage |
-		   TD0_alpha_add_enable |
-		   TD0_alpha_sel_add);
-	}
-     }      
-     else if (format == GL_ALPHA) {
-	*reg = g400_alpha_combine[unit][MGA_ADD];
-     }
-     else {
-	*reg = g400_color_combine[unit][MGA_ADD];
-     }
-     break;
-
    case GL_BLEND:
       if (format == GL_ALPHA) {
-	 *reg = g400_alpha_combine[unit][MGA_BLEND];
-      }
-      else {
-	 FALLBACK( ctx, MGA_FALLBACK_TEXTURE, GL_TRUE );
-	 if ( MGA_DEBUG & DEBUG_VERBOSE_FALLBACK )
-	    fprintf( stderr, "FALLBACK: GL_BLEND envcolor=0x%08x\n",
-		     mmesa->envcolor );
-
-         /* Do singletexture GL_BLEND with 'all ones' env-color
-          * by using both texture units.  Multitexture gl_blend
-          * is a fallback.
-          */
-         if (unit == 0) {
-            /* Part 1: R1 = Rf ( 1 - Rt )
-             *         A1 = Af At
-             */
-            *reg = ( TD0_color_arg2_diffuse |
-                     TD0_color_arg1_inv_enable |
-                     TD0_color_sel_mul |
-                     TD0_alpha_arg2_diffuse |
-                     TD0_alpha_sel_arg1);
+         *reg = g400_alpha_combine[unit][MGA_BLEND];
+      } else {
+         if (mmesa->blend_flags & MGA_BLEND_RGB_ZERO) {
+            if (format == GL_RGB || format == GL_LUMINANCE) {
+               *reg = g400_color_combine[unit][MGA_BLEND];
+            } else if (format == GL_RGBA || format == GL_LUMINANCE_ALPHA) {
+               *reg = g400_color_alpha_combine[unit][MGA_BLEND];
+            } else if (format == GL_INTENSITY) {
+               if (mmesa->blend_flags & MGA_BLEND_ALPHA_ZERO) {
+                  /* Cv = Cf ( 1 - Cs )
+                   * Av = Af ( 1 - As )
+                   */
+                  if (unit == 0) {
+                     *reg = (TD0_color_arg1_inv_enable |
+                             TD0_color_arg2_diffuse |
+                             TD0_color_sel_mul |
+                             TD0_alpha_arg1_inv_enable |
+                             TD0_alpha_arg2_diffuse |
+                             TD0_alpha_sel_mul);
+                  } else {
+                     *reg = (TD0_color_arg1_inv_enable |
+                             TD0_color_arg2_prevstage |
+                             TD0_color_sel_mul |
+                             TD0_alpha_arg1_inv_enable |
+                             TD0_alpha_arg2_prevstage |
+                             TD0_alpha_sel_mul);
+                  }
+               } else if (mmesa->blend_flags & MGA_BLEND_ALPHA_ONE &&
+                          ctx->Texture._EnabledUnits != 0x03) {
+                  /* C1 = Cf ( 1 - Cs )
+                   * A1 = Af ( 1 - As )
+                   */
+                  *reg = (TD0_color_arg1_inv_enable |
+                          TD0_color_arg2_diffuse |
+                          TD0_color_sel_mul |
+                          TD0_alpha_arg1_inv_enable |
+                          TD0_alpha_arg2_diffuse |
+                          TD0_alpha_sel_mul);
+                  /* Cv = C1
+                   * Av = A1 + As
+                   */
+                  *(reg+1) = (TD0_color_arg2_prevstage |
+                              TD0_color_sel_arg2 |
+                              TD0_alpha_arg2_prevstage |
+                              TD0_alpha_add_enable |
+                              TD0_alpha_sel_add);
+                  mmesa->dualtex_env = GL_TRUE;
+               } else {
+                  t->texenv_fallback = GL_TRUE;
+               }
+            }
+         } else if (mmesa->blend_flags & MGA_BLEND_RGB_ONE &&
+                    ctx->Texture._EnabledUnits != 0x03) {
+            if (format == GL_RGB || format == GL_LUMINANCE) {
+                  /* C1 = Cf ( 1 - Cs )
+                   * A1 = Af
+                   */
+                  *reg = (TD0_color_arg1_inv_enable |
+                          TD0_color_arg2_diffuse |
+                          TD0_color_sel_mul |
+                          TD0_alpha_arg2_diffuse |
+                          TD0_alpha_sel_arg2);
+                  /* Cv = C1 + Cs
+                   * Av = A1
+                   */
+                  *(reg+1) = (TD0_color_arg2_prevstage |
+                              TD0_color_add_add |
+                              TD0_color_sel_add |
+                              TD0_alpha_arg2_prevstage |
+                              TD0_alpha_sel_arg2);
+                  mmesa->dualtex_env = GL_TRUE;
+            } else if (format == GL_RGBA || format == GL_LUMINANCE_ALPHA) {
+                  /* C1 = Cf ( 1 - Cs )
+                   * A1 = Af As
+                   */
+                  *reg = (TD0_color_arg1_inv_enable |
+                          TD0_color_arg2_diffuse |
+                          TD0_color_sel_mul |
+                          TD0_alpha_arg2_diffuse |
+                          TD0_alpha_sel_mul);
+                  /* Cv = C1 + Cs
+                   * Av = A1
+                   */
+                  *(reg+1) = (TD0_color_arg2_prevstage |
+                              TD0_color_add_add |
+                              TD0_color_sel_add |
+                              TD0_alpha_arg2_prevstage |
+                              TD0_alpha_sel_arg2);
+                  mmesa->dualtex_env = GL_TRUE;
+            } else if (format == GL_INTENSITY) {
+               if (mmesa->blend_flags & MGA_BLEND_ALPHA_ZERO) {
+                  /* C1 = Cf ( 1 - Cs )
+                   * A1 = Af ( 1 - As )
+                   */
+                  *reg = (TD0_color_arg1_inv_enable |
+                          TD0_color_arg2_diffuse |
+                          TD0_color_sel_mul |
+                          TD0_alpha_arg1_inv_enable |
+                          TD0_alpha_arg2_diffuse |
+                          TD0_alpha_sel_mul);
+                  /* Cv = C1 + Cs
+                   * Av = A1
+                   */
+                  *(reg+1) = (TD0_color_arg2_prevstage |
+                              TD0_color_add_add |
+                              TD0_color_sel_add |
+                              TD0_alpha_arg2_prevstage |
+                              TD0_alpha_sel_arg2);
+                  mmesa->dualtex_env = GL_TRUE;
+               } else if (mmesa->blend_flags & MGA_BLEND_ALPHA_ONE) {
+                  /* C1 = Cf ( 1 - Cs )
+                   * A1 = Af ( 1 - As )
+                   */
+                  *reg = (TD0_color_arg1_inv_enable |
+                          TD0_color_arg2_diffuse |
+                          TD0_color_sel_mul |
+                          TD0_alpha_arg1_inv_enable |
+                          TD0_alpha_arg2_diffuse |
+                          TD0_alpha_sel_mul);
+                  /* Cv = C1 + Cs
+                   * Av = A1 + As
+                   */
+                  *(reg+1) = (TD0_color_arg2_prevstage |
+                              TD0_color_add_add |
+                              TD0_color_sel_add |
+                              TD0_alpha_arg2_prevstage |
+                              TD0_alpha_add_enable |
+                              TD0_alpha_sel_add);
+                  mmesa->dualtex_env = GL_TRUE;
+               } else {
+                  t->texenv_fallback = GL_TRUE;
+               }
+            }
          } else {
-            /* Part 2: R2 = R1 + Rt
-             *         A2 = A1
-             */
-            *reg = ( TD0_color_arg2_prevstage |
-                     TD0_color_add_add |
-                     TD0_color_sel_add |
-                     TD0_alpha_arg2_prevstage |
-                     TD0_alpha_sel_arg2);
+            t->texenv_fallback = GL_TRUE;
          }
       }
       break;
+   case GL_COMBINE_EXT:
+      if (!mgaUpdateTextureEnvCombine(ctx, unit))
+         t->texenv_fallback = GL_TRUE;
+      break;
    default:
       break;
    }
 }
 
-
 static void disable_tex( GLcontext *ctx, int unit )
 {
    mgaContextPtr mmesa = MGA_CONTEXT( ctx );
@@ -573,7 +816,7 @@ static void disable_tex( GLcontext *ctx, int unit )
       mmesa->CurrentTexObj[unit] = NULL;
    }
 
-   if ( unit != 0 ) {
+   if ( unit != 0 && !mmesa->dualtex_env ) {
       mmesa->setup.tdualstage1 = mmesa->setup.tdualstage0;
    }
 
@@ -586,7 +829,7 @@ static void disable_tex( GLcontext *ctx, int unit )
    mmesa->dirty |= MGA_UPLOAD_CONTEXT | (MGA_UPLOAD_TEX0 << unit);
 }
 
-static GLboolean enable_tex_2d( GLcontext *ctx, int unit )
+static GLboolean enable_tex( GLcontext *ctx, int unit )
 {
    mgaContextPtr mmesa = MGA_CONTEXT(ctx);
    const int source = mmesa->tmu_source[unit];
@@ -649,6 +892,14 @@ static GLboolean update_tex_common( GLcontext *ctx, int unit )
       t->setup.texctl2 |= TMC_dualtex_enable;
    }
 
+   t->texenv_fallback = GL_FALSE;
+
+   /* Set this before mgaUpdateTextureEnvG400() since
+    * GL_ARB_texture_env_crossbar may have to disable texturing.
+    */
+   mmesa->setup.dwgctl &= DC_opcod_MASK;
+   mmesa->setup.dwgctl |= DC_opcod_texture_trap;
+
    /* FIXME: The Radeon has some cached state so that it can avoid calling
     * FIXME: UpdateTextureEnv in some cases.  Is that possible here?
     */
@@ -680,13 +931,10 @@ static GLboolean update_tex_common( GLcontext *ctx, int unit )
 
       mgaUpdateTextureEnvG200( ctx, unit );
    }
-
-   mmesa->setup.dwgctl &= DC_opcod_MASK;
-   mmesa->setup.dwgctl |= DC_opcod_texture_trap;
    mmesa->dirty |= MGA_UPLOAD_CONTEXT | (MGA_UPLOAD_TEX0 << unit);
 
    FALLBACK( ctx, MGA_FALLBACK_BORDER_MODE, t->border_fallback );
-   return !t->border_fallback;
+   return !t->border_fallback && !t->texenv_fallback;
 }
 
 
@@ -697,8 +945,9 @@ static GLboolean updateTextureUnit( GLcontext *ctx, int unit )
    const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[source];
 
 
-   if ( texUnit->_ReallyEnabled == TEXTURE_2D_BIT) {
-      return(enable_tex_2d( ctx, unit ) &&
+   if ( texUnit->_ReallyEnabled == TEXTURE_2D_BIT ||
+        texUnit->_ReallyEnabled == TEXTURE_RECT_BIT ) {
+      return(enable_tex( ctx, unit ) &&
 	     update_tex_common( ctx, unit ));
    }
    else if ( texUnit->_ReallyEnabled ) {
@@ -718,6 +967,7 @@ void mgaUpdateTextureState( GLcontext *ctx )
    GLboolean ok;
    unsigned  i;
 
+   mmesa->dualtex_env = GL_FALSE;
 
    /* This works around a quirk with the MGA hardware.  If only OpenGL 
     * TEXTURE1 is enabled, then the hardware TEXTURE0 must be used.  The
@@ -740,8 +990,4 @@ void mgaUpdateTextureState( GLcontext *ctx )
    }
 
    FALLBACK( ctx, MGA_FALLBACK_TEXTURE, !ok );
-   
-   /* FIXME: I believe that ChooseVertexState should be called here instead of
-    * FIXME: in mgaDDValidateState.
-    */
 }
diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.c b/src/mesa/drivers/dri/mga/mga_xmesa.c
index 16dc349cac..d95c0197eb 100644
--- a/src/mesa/drivers/dri/mga/mga_xmesa.c
+++ b/src/mesa/drivers/dri/mga/mga_xmesa.c
@@ -1,4 +1,4 @@
-/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mga_xmesa.c,v 1.18 2002/12/16 16:18:52 dawes Exp $ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mga_xmesa.c,v 1.19 2003/03/26 20:43:49 tsi Exp $ */
 /*
  * Copyright 2000-2001 VA Linux Systems, Inc.
  * All Rights Reserved.
@@ -56,11 +56,23 @@
 
 #include "utils.h"
 #include "vblank.h"
-#include "dri_util.h"
+
 #ifndef _SOLO
 #include "glxextensions.h"
 #endif
 
+/* MGA configuration
+ */
+#include "xmlpool.h"
+
+const char __driConfigOptions[] =
+DRI_CONF_BEGIN
+    DRI_CONF_SECTION_PERFORMANCE
+        DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
+    DRI_CONF_SECTION_END
+DRI_CONF_END;
+const GLuint __driNConfigOptions = 1;
+
 #ifndef MGA_DEBUG
 int MGA_DEBUG = 0;
 #endif
@@ -97,7 +109,7 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
 				    &gp, sizeof(gp));
       if (ret) {
 	    fprintf(stderr, "drmMgaGetParam (MGA_PARAM_IRQ_NR): %d\n", ret);
-	    free(mgaScreen);
+	    FREE(mgaScreen);
 	    sPriv->private = NULL;
 	    return GL_FALSE;
       }
@@ -105,23 +117,26 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
    
    mgaScreen->linecomp_sane = (sPriv->ddxMajor > 1) || (sPriv->ddxMinor > 1)
        || ((sPriv->ddxMinor == 1) && (sPriv->ddxPatch > 0));
-#ifndef _SOLO   
-   if ( ! mgaScreen->linecomp_sane ) {
-      PFNGLXDISABLEEXTENSIONPROC glx_disable_extension;
+#ifndef _SOLO       
+   if ( driCompareGLXAPIVersion( 20030813 ) >= 0 ) {
+      PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
+          (PFNGLXSCRENABLEEXTENSIONPROC) glXGetProcAddress( (const GLubyte *) "__glXScrEnableExtension" );
+      void * const psc = sPriv->psc->screenConfigs;
 
-      glx_disable_extension = (PFNGLXDISABLEEXTENSIONPROC)
-	  glXGetProcAddress( "__glXDisableExtension" );
+      if ( glx_enable_extension != NULL ) {
+	 if ( mgaScreen->linecomp_sane ) {
+	    (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
+	    (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
+	    (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
+	 }
 
-      if ( glx_disable_extension != NULL ) {
-	 (*glx_disable_extension)( "GLX_SGI_swap_control" );
-	 (*glx_disable_extension)( "GLX_SGI_video_sync" );
-	 (*glx_disable_extension)( "GLX_MESA_swap_control" );
+	 (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
       }
    }
 #endif
    if (serverInfo->chipset != MGA_CARD_TYPE_G200 &&
        serverInfo->chipset != MGA_CARD_TYPE_G400) {
-      free(mgaScreen);
+      FREE(mgaScreen);
       sPriv->private = NULL;
       __driUtilMessage("Unrecognized chipset");
       return GL_FALSE;
@@ -168,7 +183,7 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
 	      mgaScreen->agp.size,
 	      (drmAddress *)&mgaScreen->agp.map) != 0)
    {
-      free(mgaScreen);
+      Xfree(mgaScreen);
       sPriv->private = NULL;
       __driUtilMessage("Couldn't map agp region");
       return GL_FALSE;
@@ -194,7 +209,7 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
               serverInfo->agpTextureSize,
               (drmAddress *)&mgaScreen->texVirtual[MGA_AGP_HEAP]) != 0)
    {
-      free(mgaScreen);
+      FREE(mgaScreen);
       sPriv->private = NULL;
       __driUtilMessage("Couldn't map agptexture region");
       return GL_FALSE;
@@ -214,13 +229,16 @@ mgaInitDriver(__DRIscreenPrivate *sPriv)
    mgaScreen->bufs = drmMapBufs(sPriv->fd);
    if (!mgaScreen->bufs) {
       /*drmUnmap(mgaScreen->agp_tex.map, mgaScreen->agp_tex.size);*/
-      free(mgaScreen);
+      FREE(mgaScreen);
       sPriv->private = NULL;
       __driUtilMessage("Couldn't map dma buffers");
       return GL_FALSE;
    }
    mgaScreen->sarea_priv_offset = serverInfo->sarea_priv_offset;
 
+   /* parse information in __driConfigOptions */
+   driParseOptionInfo (&mgaScreen->optionCache);
+
    return GL_TRUE;
 }
 
@@ -234,7 +252,11 @@ mgaDestroyScreen(__DRIscreenPrivate *sPriv)
       fprintf(stderr, "mgaDestroyScreen\n");
 
    /*drmUnmap(mgaScreen->agp_tex.map, mgaScreen->agp_tex.size);*/
-   free(mgaScreen);
+
+   /* free all option information */
+   driDestroyOptionInfo (&mgaScreen->optionCache);
+
+   FREE(mgaScreen);
    sPriv->private = NULL;
 }
 
@@ -263,6 +285,10 @@ static const char * const g400_extensions[] =
    "GL_ARB_multitexture",
    "GL_ARB_texture_env_add",
    "GL_EXT_texture_env_add",
+   "GL_ARB_texture_env_combine",
+   "GL_EXT_texture_env_combine",
+   "GL_ARB_texture_env_crossbar",
+   "GL_ATI_texture_env_combine3",
    "GL_EXT_texture_edge_clamp",
    "GL_SGIS_texture_edge_clamp",
 #if defined (MESA_packed_depth_stencil)
@@ -286,6 +312,7 @@ static const char * const card_extensions[] =
    "GL_MESA_ycbcr_texture",
    "GL_SGIS_generate_mipmap",
    "GL_SGIS_texture_lod",
+   "GL_NV_texture_rectangle",
    NULL
 };
 
@@ -353,6 +380,10 @@ mgaCreateContext( const __GLcontextModes *mesaVis,
    mmesa->sarea = (void *)saPriv;
    mmesa->glBuffer = NULL;
 
+   /* Parse configuration files */
+   driParseConfigFiles (&mmesa->optionCache, &mgaScreen->optionCache,
+                        sPriv->myNum, "mga");
+
    (void) memset( mmesa->texture_heaps, 0, sizeof( mmesa->texture_heaps ) );
    make_empty_list( & mmesa->swapped );
 
@@ -388,10 +419,10 @@ mgaCreateContext( const __GLcontextModes *mesaVis,
 				 mmesa->nr_heaps,
 				 & ctx->Const,
 				 4,
-				 11, /* max 2D texture size is 1024x1024 */
+				 11, /* max 2D texture size is 2048x2048 */
 				 0,  /* 3D textures unsupported. */
 				 0,  /* cube textures unsupported. */
-				 0,  /* texture rectangles unsupported. */
+				 11, /* max texture rect size is 2048x2048 */
 				 maxlevels,
 				 GL_FALSE );
 
@@ -487,14 +518,15 @@ mgaCreateContext( const __GLcontextModes *mesaVis,
 
    mmesa->vblank_flags = ((mmesa->mgaScreen->irq == 0) 
 			  || !mmesa->mgaScreen->linecomp_sane)
-       ? VBLANK_FLAG_NO_IRQ : driGetDefaultVBlankFlags();
+       ? VBLANK_FLAG_NO_IRQ : driGetDefaultVBlankFlags(&mmesa->optionCache);
 #ifndef _SOLO
-   mmesa->get_ust = (PFNGLXGETUSTPROC) glXGetProcAddress( "__glXGetUST" );
-   if ( mmesa->get_ust == NULL ) 
-#endif
-   {
+   mmesa->get_ust = (PFNGLXGETUSTPROC) glXGetProcAddress( (const GLubyte *) "__glXGetUST" );
+   if ( mmesa->get_ust == NULL ) {
       mmesa->get_ust = get_ust_nop;
    }
+#else
+   mmesa->get_ust = get_ust_nop;
+#endif   
 
    (*mmesa->get_ust)( & mmesa->swap_ust );
 
@@ -541,6 +573,9 @@ mgaDestroyContext(__DRIcontextPrivate *driContextPriv)
          }
       }
 
+      /* free the option cache */
+      driDestroyOptionCache (&mmesa->optionCache);
+
       FREE(mmesa);
    }
 
@@ -614,6 +649,7 @@ mgaMakeCurrent(__DRIcontextPrivate *driContextPriv,
       mgaContextPtr mmesa = (mgaContextPtr) driContextPriv->driverPrivate;
 
       if (mmesa->driDrawable != driDrawPriv) {
+	 driDrawableInitVBlank( driDrawPriv, mmesa->vblank_flags );
 	 mmesa->driDrawable = driDrawPriv;
 	 mmesa->dirty = ~0; 
 	 mmesa->dirty_cliprects = (MGA_FRONT|MGA_BACK); 
@@ -695,7 +731,7 @@ static const struct __DriverAPIRec mgaAPI = {
  * The __driCreateScreen name is the symbol that libGL.so fetches.
  * Return:  pointer to a __DRIscreenPrivate.
  */
-#ifndef _SOLO
+#ifndef _SOLO 
 void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
                         int numConfigs, __GLXvisualConfig *config)
 {
@@ -714,30 +750,6 @@ void *__driCreateScreen(struct DRIDriverRec *driver,
 #endif
 
 
-#ifndef _SOLO
-/* This function is called by libGL.so as soon as libGL.so is loaded.
- * This is where we'd register new extension functions with the dispatcher.
- */
-void
-__driRegisterExtensions( void )
-{
-   PFNGLXENABLEEXTENSIONPROC glx_enable_extension;
-
-
-   if ( driCompareGLXAPIVersion( 20030317 ) >= 0 ) {
-      glx_enable_extension = (PFNGLXENABLEEXTENSIONPROC)
-	  glXGetProcAddress( "__glXEnableExtension" );
-
-      if ( glx_enable_extension != NULL ) {
-	 (*glx_enable_extension)( "GLX_SGI_swap_control", GL_FALSE );
-	 (*glx_enable_extension)( "GLX_SGI_video_sync", GL_FALSE );
-	 (*glx_enable_extension)( "GLX_MESA_swap_control", GL_FALSE );
-	 (*glx_enable_extension)( "GLX_MESA_swap_frame_usage", GL_FALSE );
-      }
-   }
-}
-#endif
-
 /**
  * Get information about previous buffer swaps.
  */
diff --git a/src/mesa/drivers/dri/mga/mga_xmesa.h b/src/mesa/drivers/dri/mga/mga_xmesa.h
index de349da089..d372abe012 100644
--- a/src/mesa/drivers/dri/mga/mga_xmesa.h
+++ b/src/mesa/drivers/dri/mga/mga_xmesa.h
@@ -36,6 +36,7 @@
 #include "mtypes.h"
 #include "mgaregs.h"
 #include "mga_common.h"
+#include "xmlconfig.h"
 
 typedef struct mga_screen_private_s {
 
@@ -78,6 +79,9 @@ typedef struct mga_screen_private_s {
    drmRegion primary;
    drmRegion buffers;
    unsigned int sarea_priv_offset;
+
+   /* Configuration cache with default values for all contexts */
+   driOptionCache optionCache;
 } mgaScreenPrivate;
 
 
diff --git a/src/mesa/drivers/dri/mga/mgacontext.h b/src/mesa/drivers/dri/mga/mgacontext.h
index 7188f6d955..50efe4c817 100644
--- a/src/mesa/drivers/dri/mga/mgacontext.h
+++ b/src/mesa/drivers/dri/mga/mgacontext.h
@@ -38,6 +38,7 @@
 #include "mga_sarea.h"
 #include "texmem.h"
 #include "macros.h"
+#include "xmlconfig.h"
 
 #define MGA_SET_FIELD(reg,mask,val)  reg = ((reg) & (mask)) | ((val) & ~(mask))
 #define MGA_FIELD(field,val) (((val) << (field ## _SHIFT)) & ~(field ## _MASK))
@@ -79,10 +80,12 @@ typedef void (*mga_point_func)( mgaContextPtr, mgaVertex * );
 
 
 
-/* Reasons why the GL_BLEND fallback mightn't work:
+/* GL_BLEND has some limitations
  */
-#define MGA_BLEND_ENV_COLOR 0x1
-#define MGA_BLEND_MULTITEX  0x2
+#define MGA_BLEND_RGB_ZERO   0x1
+#define MGA_BLEND_RGB_ONE    0x2
+#define MGA_BLEND_ALPHA_ZERO 0x4
+#define MGA_BLEND_ALPHA_ONE  0x8
 
 struct mga_texture_object_s;
 struct mga_screen_private_s;
@@ -149,6 +152,10 @@ typedef struct mga_texture_object_s
     * to fallback for GL_CLAMP_TO_BORDER.
     */
    GLboolean          border_fallback;
+   /* Depending on multitxturing and environment color
+    * GL_BLEND may have to be a software fallback.
+    */
+   GLboolean texenv_fallback;
 } mgaTextureObject_t;
 
 struct mga_hw_state {
@@ -202,10 +209,11 @@ struct mga_context_t {
    struct gl_client_array UbyteColor;
    struct gl_client_array UbyteSecondaryColor;
 
-   /* Support for limited GL_BLEND fallback
+   /* Support for GL_DECAL and GL_BLEND
     */
    unsigned int blend_flags;
    unsigned int envcolor;
+   GLboolean dualtex_env;
 
    /* Rasterization state 
     */
@@ -299,6 +307,10 @@ struct mga_context_t {
    __DRIscreenPrivate *driScreen;
    struct mga_screen_private_s *mgaScreen;
    MGASAREAPrivPtr sarea;
+
+   /* Configuration cache
+    */
+   driOptionCache optionCache;
 };
 
 #define MGA_CONTEXT(ctx) ((mgaContextPtr)(ctx->DriverCtx))
diff --git a/src/mesa/drivers/dri/mga/mgaioctl.c b/src/mesa/drivers/dri/mga/mgaioctl.c
index 6b50af202a..fc53912af4 100644
--- a/src/mesa/drivers/dri/mga/mgaioctl.c
+++ b/src/mesa/drivers/dri/mga/mgaioctl.c
@@ -26,9 +26,8 @@
  *    Gareth Hughes <gareth@valinux.com>
  */
 /* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgaioctl.c,v 1.16 2002/12/16 16:18:52 dawes Exp $ */
-
-#include <sched.h>
 #include <errno.h>
+#include <sched.h>
 
 #include "mtypes.h"
 #include "macros.h"
diff --git a/src/mesa/drivers/dri/mga/mgastate.c b/src/mesa/drivers/dri/mga/mgastate.c
index 0d304966d7..29815008be 100644
--- a/src/mesa/drivers/dri/mga/mgastate.c
+++ b/src/mesa/drivers/dri/mga/mgastate.c
@@ -401,7 +401,7 @@ static void mgaDDColorMask(GLcontext *ctx,
  */
 
 static int mgaStipples[16] = {
-   0xffff1,  /* See above note */
+   0xffff,
    0xa5a5,
    0x5a5a,
    0xa0a0,
@@ -425,9 +425,6 @@ static int mgaStipples[16] = {
  *
  * \param ctx GL rendering context to be affected
  * \param mask Pointer to the 32x32 stipple mask
- *
- * \note the fully opaque pattern (0xffff) has been disabled in order
- * to work around a conformance issue.
  */
 
 static void mgaDDPolygonStipple( GLcontext *ctx, const GLubyte *mask )
@@ -492,8 +489,7 @@ static void updateSpecularLighting( GLcontext *ctx )
    mgaContextPtr mmesa = MGA_CONTEXT(ctx);
    unsigned int specen;
 
-   specen = (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR &&
-	     ctx->Light.Enabled) ? TMC_specen_enable : 0;
+   specen = (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) ? TMC_specen_enable : 0;
 
    if ( specen != mmesa->hw.specen ) {
       mmesa->hw.specen = specen;
@@ -519,14 +515,6 @@ static void mgaDDLightModelfv(GLcontext *ctx, GLenum pname,
 }
 
 
-static void mgaDDShadeModel(GLcontext *ctx, GLenum mode)
-{
-   /* FIXME: This used to FLUSH_BATCH and set MGA_NEW_TEXTURE in new_state,
-    * FIXME: so I'm not sure what to do here now.
-    */
-}
-
-
 /* =============================================================
  * Stencil
  */
@@ -671,6 +659,12 @@ static void mgaDDStencilOp(GLcontext *ctx, GLenum fail, GLenum zfail,
    case GL_DECR:
       stencilctl |= SC_szpassop_decrsat;
       break;
+   case GL_INCR_WRAP:
+      stencilctl |= SC_szpassop_incr;
+      break;
+   case GL_DECR_WRAP:
+      stencilctl |= SC_szpassop_decr;
+      break;
    case GL_INVERT:
       stencilctl |= SC_szpassop_invert;
       break;
@@ -826,8 +820,10 @@ void mgaUpdateRects( mgaContextPtr mmesa, GLuint buffers )
    else
       mgaXMesaSetBackClipRects( mmesa );
 
+#ifndef _SOLO
+   sarea->req_drawable = driDrawable->draw;
    sarea->req_draw_buffer = mmesa->draw_buffer;
-
+#endif
    mgaUpdateClipping( mmesa->glCtx );
    mgaCalcViewport( mmesa->glCtx );
 
@@ -888,6 +884,11 @@ static void mgaDDEnable(GLcontext *ctx, GLenum cap, GLboolean state)
    mgaContextPtr mmesa = MGA_CONTEXT( ctx );
 
    switch(cap) {
+   case GL_LIGHTING:
+   case GL_COLOR_SUM_EXT:
+      FLUSH_BATCH( mmesa );
+      updateSpecularLighting( ctx );
+      break;
    case GL_ALPHA_TEST:
       FLUSH_BATCH( mmesa );
       mmesa->hw.alpha_func_enable = (state) ? ~0 : 0;
@@ -1034,25 +1035,24 @@ void mgaEmitHwStateLocked( mgaContextPtr mmesa )
    }
 
    if ((mmesa->dirty & MGA_UPLOAD_TEX0) && mmesa->CurrentTexObj[0]) {
-      mmesa->CurrentTexObj[0]->setup.texctl2 &= ~TMC_specen_enable;
-      mmesa->CurrentTexObj[0]->setup.texctl2 |= mmesa->hw.specen;
-
       memcpy(&sarea->TexState[0],
 	     &mmesa->CurrentTexObj[0]->setup,
 	     sizeof(sarea->TexState[0]));
    }
 
    if ((mmesa->dirty & MGA_UPLOAD_TEX1) && mmesa->CurrentTexObj[1]) {
-      mmesa->CurrentTexObj[1]->setup.texctl2 &= ~TMC_specen_enable;
-      mmesa->CurrentTexObj[1]->setup.texctl2 |= mmesa->hw.specen;
-
       memcpy(&sarea->TexState[1],
 	     &mmesa->CurrentTexObj[1]->setup,
 	     sizeof(sarea->TexState[1]));
    }
 
-   if ( (sarea->TexState[0].texctl2 & TMC_borderen_MASK) !=
-	(sarea->TexState[1].texctl2 & TMC_borderen_MASK) ) {
+   if (mmesa->dualtex_env) {
+      sarea->TexState[0].texctl2 |= TMC_dualtex_enable;
+      memcpy( &sarea->TexState[1], &sarea->TexState[0],
+	      sizeof(sarea->TexState[0]) );
+      mmesa->dirty |= MGA_UPLOAD_TEX1|MGA_UPLOAD_TEX0;
+   } else if ( (sarea->TexState[0].texctl2 & TMC_borderen_MASK) !=
+               (sarea->TexState[1].texctl2 & TMC_borderen_MASK) ) {
       const int borderen = sarea->TexState[1].texctl2 & ~TMC_borderen_MASK;
 
       memcpy( &sarea->TexState[1], &sarea->TexState[0],
@@ -1070,15 +1070,10 @@ void mgaEmitHwStateLocked( mgaContextPtr mmesa )
    mmesa->sarea->dirty |= mmesa->dirty;
    mmesa->dirty &= MGA_UPLOAD_CLIPRECTS;
 
-   /* This is a bit of a hack but seems to be the best place to ensure
-    * that separate specular is disabled when not needed.
-    */
-   if (ctx->Texture._EnabledUnits == 0 ||
-       !ctx->Light.Enabled ||
-       ctx->Light.Model.ColorControl == GL_SINGLE_COLOR) {
-      sarea->TexState[0].texctl2 &= ~TMC_specen_enable;
-      sarea->TexState[1].texctl2 &= ~TMC_specen_enable;
-   }
+   sarea->TexState[0].texctl2 &= ~TMC_specen_enable;
+   sarea->TexState[1].texctl2 &= ~TMC_specen_enable;
+   sarea->TexState[0].texctl2 |= mmesa->hw.specen;
+   sarea->TexState[1].texctl2 |= mmesa->hw.specen;
 }
 
 
@@ -1089,21 +1084,21 @@ void mgaEmitHwStateLocked( mgaContextPtr mmesa )
 static void mgaDDValidateState( GLcontext *ctx )
 {
    mgaContextPtr mmesa = MGA_CONTEXT( ctx );
-   int new_state = mmesa->NewGLState;
-
 
    FLUSH_BATCH( mmesa );
 
-   if (mmesa->NewGLState & _MGA_NEW_RASTERSETUP) {
-      mgaChooseVertexState( ctx );
+   if (mmesa->NewGLState & _NEW_TEXTURE) {
+      mgaUpdateTextureState(ctx);
    }
 
-   if (mmesa->NewGLState & _MGA_NEW_RENDERSTATE) {
-      mgaChooseRenderState( ctx );
-   }
+   if (!mmesa->Fallback) {
+      if (mmesa->NewGLState & _MGA_NEW_RASTERSETUP) {
+         mgaChooseVertexState( ctx );
+      }
 
-   if (new_state & _NEW_TEXTURE) {
-      mgaUpdateTextureState(ctx);
+      if (mmesa->NewGLState & _MGA_NEW_RENDERSTATE) {
+         mgaChooseRenderState( ctx );
+      }
    }
 
    mmesa->NewGLState = 0;
@@ -1186,13 +1181,14 @@ void mgaInitState( mgaContextPtr mmesa )
       break;
    }
 
+   mmesa->hw.blend_func = AC_src_one | AC_dst_zero;
    mmesa->hw.zmode = DC_zmode_zlt | DC_atype_zi;
    mmesa->hw.stencil = (0x0ff << S_smsk_SHIFT) | (0x0ff << S_swtmsk_SHIFT);
    mmesa->hw.stencilctl = SC_smode_salways | SC_sfailop_keep 
        | SC_szfailop_keep | SC_szpassop_keep;
    mmesa->hw.stencil_enable = 0;
-   mmesa->hw.cull = _CULL_NEGATIVE;
-   mmesa->hw.cull_dualtex = _CULL_POSITIVE;
+   mmesa->hw.cull = _CULL_DISABLE;
+   mmesa->hw.cull_dualtex = _CULL_DISABLE;
    mmesa->hw.specen = 0;
 
    mmesa->setup.dwgctl = (DC_opcod_trap |
@@ -1227,6 +1223,10 @@ void mgaInitState( mgaContextPtr mmesa )
    mmesa->setup.tdualstage1 = 0;
    mmesa->setup.fcol = 0;
    mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+
+   mmesa->envcolor = 0;
+   mmesa->blend_flags = MGA_BLEND_RGB_ZERO | MGA_BLEND_ALPHA_ZERO;
+   mmesa->dualtex_env = GL_FALSE;
 }
 
 
@@ -1243,7 +1243,6 @@ void mgaDDInitStateFuncs( GLcontext *ctx )
    ctx->Driver.DepthMask = mgaDDDepthMask;
    ctx->Driver.Fogfv = mgaDDFogfv;
    ctx->Driver.Scissor = mgaDDScissor;
-   ctx->Driver.ShadeModel = mgaDDShadeModel;
    ctx->Driver.CullFace = mgaDDCullFaceFrontFace;
    ctx->Driver.FrontFace = mgaDDCullFaceFrontFace;
    ctx->Driver.ColorMask = mgaDDColorMask;
diff --git a/src/mesa/drivers/dri/mga/mgatex.c b/src/mesa/drivers/dri/mga/mgatex.c
index 82eccc8149..166bdfc22f 100644
--- a/src/mesa/drivers/dri/mga/mgatex.c
+++ b/src/mesa/drivers/dri/mga/mgatex.c
@@ -221,7 +221,7 @@ mgaChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
    case GL_ALPHA16:
    case GL_COMPRESSED_ALPHA:
       /* FIXME: This will report incorrect component sizes... */
-      return &_mesa_texformat_argb4444;
+      return MGA_IS_G400(mmesa) ? &_mesa_texformat_al88 : &_mesa_texformat_argb4444;
 
    case 1:
    case GL_LUMINANCE:
@@ -231,7 +231,7 @@ mgaChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
    case GL_LUMINANCE16:
    case GL_COMPRESSED_LUMINANCE:
       /* FIXME: This will report incorrect component sizes... */
-      return &_mesa_texformat_rgb565;
+      return MGA_IS_G400(mmesa) ? &_mesa_texformat_al88 : &_mesa_texformat_rgb565;
 
    case 2:
    case GL_LUMINANCE_ALPHA:
@@ -243,7 +243,7 @@ mgaChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
    case GL_LUMINANCE16_ALPHA16:
    case GL_COMPRESSED_LUMINANCE_ALPHA:
       /* FIXME: This will report incorrect component sizes... */
-      return &_mesa_texformat_argb4444;
+      return MGA_IS_G400(mmesa) ? &_mesa_texformat_al88 : &_mesa_texformat_argb4444;
 
    case GL_INTENSITY:
    case GL_INTENSITY4:
@@ -252,7 +252,7 @@ mgaChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
    case GL_INTENSITY16:
    case GL_COMPRESSED_INTENSITY:
       /* FIXME: This will report incorrect component sizes... */
-      return &_mesa_texformat_argb4444;
+      return MGA_IS_G400(mmesa) ? &_mesa_texformat_i8 : &_mesa_texformat_argb4444;
 
    case GL_YCBCR_MESA:
       if (MGA_IS_G400(mmesa) &&
@@ -309,6 +309,7 @@ mgaAllocTexObj( struct gl_texture_object *tObj )
 			    | TF_uvoffset_OGL);
 
       t->border_fallback = GL_FALSE;
+      t->texenv_fallback = GL_FALSE;
 
       make_empty_list( & t->base );
 
@@ -328,31 +329,31 @@ static void mgaDDTexEnv( GLcontext *ctx, GLenum target,
    struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
    mgaContextPtr mmesa = MGA_CONTEXT(ctx);
 
-
    switch( pname ) {
    case GL_TEXTURE_ENV_COLOR: {
       GLubyte c[4];
-      GLuint envColor;
 
       UNCLAMPED_FLOAT_TO_RGBA_CHAN( c, texUnit->EnvColor );
-      envColor = mgaPackColor( mmesa->mgaScreen->cpp, c[0], c[1], c[2], c[3] );
       mmesa->envcolor = PACK_COLOR_8888( c[3], c[0], c[1], c[2] );
 
-      if (mmesa->setup.fcol != envColor) {
+      if (mmesa->setup.fcol != mmesa->envcolor) {
 	 FLUSH_BATCH(mmesa);
-	 mmesa->setup.fcol = envColor;
+	 mmesa->setup.fcol = mmesa->envcolor;
 	 mmesa->dirty |= MGA_UPLOAD_CONTEXT;
 
-	 mmesa->blend_flags &= ~MGA_BLEND_ENV_COLOR;
+	 mmesa->blend_flags = 0;
+
+         if ((mmesa->envcolor & 0xffffff) == 0x0) {
+            mmesa->blend_flags |= MGA_BLEND_RGB_ZERO;
+         } else if ((mmesa->envcolor & 0xffffff) == 0xffffff) {
+            mmesa->blend_flags |= MGA_BLEND_RGB_ONE;
+         }
 
-	 /* Actually just require all four components to be
-	  * equal.  This permits a single-pass GL_BLEND.
-	  *
-	  * More complex multitexture/multipass fallbacks
-	  * for blend can be done later.
-	  */
-	 if (mmesa->envcolor != 0x0 && mmesa->envcolor != 0xffffffff)
-	    mmesa->blend_flags |= MGA_BLEND_ENV_COLOR;
+	 if ((mmesa->envcolor >> 24) == 0x0) {
+            mmesa->blend_flags |= MGA_BLEND_ALPHA_ZERO;
+         } else if ((mmesa->envcolor >> 24) == 0xff) {
+            mmesa->blend_flags |= MGA_BLEND_ALPHA_ONE;
+         }
       }
       break;
    }
@@ -445,8 +446,9 @@ mgaDDTexParameter( GLcontext *ctx, GLenum target,
     * to do anything now 
     */
 
-   if ( (t == NULL)
-        || (target != GL_TEXTURE_2D) ) {
+   if ( (t == NULL) ||
+        (target != GL_TEXTURE_2D &&
+         target != GL_TEXTURE_RECTANGLE_NV) ) {
       return;
    }
 
@@ -492,7 +494,8 @@ static void
 mgaDDBindTexture( GLcontext *ctx, GLenum target,
 		  struct gl_texture_object *tObj )
 {
-   if ( target == GL_TEXTURE_2D ) {
+   if ( target == GL_TEXTURE_2D ||
+        target == GL_TEXTURE_RECTANGLE_NV ) {
       if ( tObj->DriverData == NULL ) {
 	 mgaAllocTexObj( tObj );
       }
@@ -547,5 +550,7 @@ mgaDDInitTextureFuncs( GLcontext *ctx )
    ctx->Driver.TexEnv			= mgaDDTexEnv;
    ctx->Driver.TexParameter		= mgaDDTexParameter;
 
-   driInitTextureObjects( ctx, & mmesa->swapped, DRI_TEXMGR_DO_TEXTURE_2D );
+   driInitTextureObjects( ctx, & mmesa->swapped,
+                          (DRI_TEXMGR_DO_TEXTURE_2D |
+                           DRI_TEXMGR_DO_TEXTURE_RECT) );
 }
diff --git a/src/mesa/drivers/dri/mga/mgatex.h b/src/mesa/drivers/dri/mga/mgatex.h
index 282577e9f8..94547e3886 100644
--- a/src/mesa/drivers/dri/mga/mgatex.h
+++ b/src/mesa/drivers/dri/mga/mgatex.h
@@ -46,4 +46,6 @@ void mgaDestroyTexObj( mgaContextPtr mmesa, mgaTextureObjectPtr t );
 
 void mgaDDInitTextureFuncs( GLcontext *ctx );
 
+GLboolean mgaUpdateTextureEnvCombine( GLcontext *ctx, int unit );
+
 #endif
diff --git a/src/mesa/drivers/dri/mga/mgatris.c b/src/mesa/drivers/dri/mga/mgatris.c
index 054c7f0635..1c193066ff 100644
--- a/src/mesa/drivers/dri/mga/mgatris.c
+++ b/src/mesa/drivers/dri/mga/mgatris.c
@@ -676,8 +676,7 @@ static void mgaFastRenderClippedPoly( GLcontext *ctx, const GLuint *elts,
 #define POINT_FALLBACK (DD_POINT_SMOOTH)
 #define LINE_FALLBACK (DD_LINE_SMOOTH | DD_LINE_STIPPLE)
 #define TRI_FALLBACK (DD_TRI_SMOOTH | DD_TRI_UNFILLED)
-#define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK| \
-                            DD_TRI_STIPPLE)
+#define ANY_FALLBACK_FLAGS (POINT_FALLBACK|LINE_FALLBACK|TRI_FALLBACK)
 #define ANY_RASTER_FLAGS (DD_FLATSHADE|DD_TRI_LIGHT_TWOSIDE|DD_TRI_OFFSET| \
                           DD_TRI_UNFILLED)
 
@@ -688,7 +687,7 @@ void mgaChooseRenderState(GLcontext *ctx)
    GLuint flags = ctx->_TriangleCaps;
    GLuint index = 0;
 
-   if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS)) {
+   if (flags & (ANY_FALLBACK_FLAGS|ANY_RASTER_FLAGS|DD_TRI_STIPPLE)) {
       if (flags & ANY_RASTER_FLAGS) {
 	 if (flags & DD_TRI_LIGHT_TWOSIDE)    index |= MGA_TWOSIDE_BIT;
 	 if (flags & DD_TRI_OFFSET)	      index |= MGA_OFFSET_BIT;
@@ -713,9 +712,11 @@ void mgaChooseRenderState(GLcontext *ctx)
 	 if (flags & TRI_FALLBACK) 
 	    mmesa->draw_tri = mga_fallback_tri;
 	 
-	 if ((flags & DD_TRI_STIPPLE) && !mmesa->haveHwStipple)
-	    mmesa->draw_tri = mga_fallback_tri;
-      
+	 index |= MGA_FALLBACK_BIT;
+      }
+
+      if ((flags & DD_TRI_STIPPLE) && !mmesa->haveHwStipple) {
+	 mmesa->draw_tri = mga_fallback_tri;
 	 index |= MGA_FALLBACK_BIT;
       }
    }
@@ -782,10 +783,9 @@ void mgaRasterPrimitive( GLcontext *ctx, GLenum prim, GLuint hwprim )
    if (ctx->Polygon.StippleFlag && mmesa->haveHwStipple)
    {
       mmesa->dirty |= MGA_UPLOAD_CONTEXT;
+      mmesa->setup.dwgctl &= ~(0xf<<20);
       if (mmesa->raster_primitive == GL_TRIANGLES)
 	 mmesa->setup.dwgctl |= mmesa->poly_stipple;
-      else
-	 mmesa->setup.dwgctl &= ~(0xf<<20);
    }
 }
 
diff --git a/src/mesa/drivers/dri/mga/mgavb.c b/src/mesa/drivers/dri/mga/mgavb.c
index 34906865e8..17dde2bba6 100644
--- a/src/mesa/drivers/dri/mga/mgavb.c
+++ b/src/mesa/drivers/dri/mga/mgavb.c
@@ -24,7 +24,7 @@
  * Authors:
  *    Keith Whitwell <keith@tungstengraphics.com>
  */
-/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgavb.c,v 1.14 2002/10/30 12:51:36 alanh Exp $ */
+/* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgavb.c,v 1.15 2003/03/26 20:43:49 tsi Exp $ */
 
 #include "mgacontext.h"
 #include "mgavb.h"
@@ -340,6 +340,9 @@ void mgaCheckTexSizes( GLcontext *ctx )
 	 tnl->Driver.Render.Interp = setup_tab[mmesa->SetupIndex].interp;
 	 tnl->Driver.Render.CopyPV = setup_tab[mmesa->SetupIndex].copy_pv;
       }
+      if (mmesa->Fallback) {
+         tnl->Driver.Render.Start(ctx);
+      }
    }
 }
 
@@ -456,7 +459,7 @@ void mgaInitVB( GLcontext *ctx )
    mgaContextPtr mmesa = MGA_CONTEXT(ctx);
    GLuint size = TNL_CONTEXT(ctx)->vb.Size;
 
-   mmesa->verts = ALIGN_MALLOC(size * sizeof(mgaVertex), 32);
+   mmesa->verts = (GLubyte *)ALIGN_MALLOC(size * sizeof(mgaVertex), 32);
 
    {
       static int firsttime = 1;
-- 
cgit v1.2.3