add gamma driver - no kernel driver yet

(build tested, not physically tested)

1 files changed, 1734 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/gamma/gamma_state.c b/src/mesa/drivers/dri/gamma/gamma_state.c
new file mode 100644
index 00000000000..8a767206782
--- /dev/null
+++ b/src/mesa/drivers/dri/gamma/gamma_state.c
@@ -0,0 +1,1734 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/gamma/gamma_state.c,v 1.5 2002/11/05 17:46:07 tsi Exp $ */
+/*
+ * Copyright 2001 by Alan Hourihane.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Alan Hourihane not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Alan Hourihane makes no representations
+ * about the suitability of this software for any purpose.  It is provided
+ * "as is" without express or implied warranty.
+ *
+ * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Authors:  Alan Hourihane, <[email protected]>
+ *
+ * 3DLabs Gamma driver
+ */
+
+#include "gamma_context.h"
+#include "gamma_macros.h"
+#include "macros.h"
+#include "glint_dri.h"
+#include "colormac.h"
+#include "swrast/swrast.h"
+#include "swrast_setup/swrast_setup.h"
+#include "array_cache/acache.h"
+#include "tnl/tnl.h"
+
+#define ENABLELIGHTING 0
+
+/* =============================================================
+ * Alpha blending
+ */
+
+static void gammaUpdateAlphaMode( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 a = gmesa->AlphaTestMode;
+   CARD32 b = gmesa->AlphaBlendMode;
+   CARD32 f = gmesa->AB_FBReadMode_Save = 0;
+   GLubyte refByte = (GLint) (ctx->Color.AlphaRef * 255.0);
+
+   a &= ~(AT_CompareMask | AT_RefValueMask);
+   b &= ~(AB_SrcBlendMask | AB_DstBlendMask);
+
+   a |= refByte << 4;
+
+   switch ( ctx->Color.AlphaFunc ) {
+      case GL_NEVER:
+	 a |= AT_Never;
+	 break;
+      case GL_LESS:
+	 a |= AT_Less;
+         break;
+      case GL_EQUAL:
+	 a |= AT_Equal;
+	 break;
+      case GL_LEQUAL:
+	 a |= AT_LessEqual;
+	 break;
+      case GL_GEQUAL:
+	 a |= AT_GreaterEqual;
+	 break;
+      case GL_GREATER:
+	 a |= AT_Greater;
+	 break;
+      case GL_NOTEQUAL:
+	 a |= AT_NotEqual;
+	 break;
+      case GL_ALWAYS:
+	 a |= AT_Always;
+	 break;
+   }
+
+   if ( ctx->Color.AlphaEnabled ) {
+      f |= FBReadDstEnable;
+      a |= AlphaTestModeEnable;
+   } else {
+      a &= ~AlphaTestModeEnable;
+   }
+
+   switch ( ctx->Color.BlendSrcRGB ) {
+      case GL_ZERO:
+	 b |= AB_Src_Zero; 
+	 break;
+      case GL_ONE:
+	 b |= AB_Src_One;
+	 break;
+      case GL_DST_COLOR:
+	 b |= AB_Src_DstColor;
+	 break;
+      case GL_ONE_MINUS_DST_COLOR:
+	 b |= AB_Src_OneMinusDstColor;
+	 break;
+      case GL_SRC_ALPHA:
+	 b |= AB_Src_SrcAlpha;
+	 break;
+      case GL_ONE_MINUS_SRC_ALPHA:
+	 b |= AB_Src_OneMinusSrcAlpha;
+	 break;
+      case GL_DST_ALPHA:
+	 b |= AB_Src_DstAlpha;
+         f |= FBReadSrcEnable;
+	 break;
+      case GL_ONE_MINUS_DST_ALPHA:
+	 b |= AB_Src_OneMinusDstAlpha;
+         f |= FBReadSrcEnable;
+	 break;
+      case GL_SRC_ALPHA_SATURATE:
+	 b |= AB_Src_SrcAlphaSaturate;
+	 break;
+   }
+
+   switch ( ctx->Color.BlendDstRGB ) {
+      case GL_ZERO:
+	 b |= AB_Dst_Zero;
+	 break;
+      case GL_ONE:
+	 b |= AB_Dst_One;
+	 break;
+      case GL_SRC_COLOR:
+	 b |= AB_Dst_SrcColor;
+	 break;
+      case GL_ONE_MINUS_SRC_COLOR:
+	 b |= AB_Dst_OneMinusSrcColor;
+	 break;
+      case GL_SRC_ALPHA:
+	 b |= AB_Dst_SrcAlpha;
+	 break;
+      case GL_ONE_MINUS_SRC_ALPHA:
+	 b |= AB_Dst_OneMinusSrcAlpha;
+	 break;
+      case GL_DST_ALPHA:
+	 b |= AB_Dst_DstAlpha;
+         f |= FBReadSrcEnable;
+	 break;
+      case GL_ONE_MINUS_DST_ALPHA:
+	 b |= AB_Dst_OneMinusDstAlpha;
+         f |= FBReadSrcEnable;
+	 break;
+   }
+
+   if ( ctx->Color.BlendEnabled ) {
+      f |= FBReadDstEnable;
+      b |= AlphaBlendModeEnable;
+   } else {
+      b &= ~AlphaBlendModeEnable;
+   }
+
+   if ( gmesa->AlphaTestMode != a ) {
+      gmesa->AlphaTestMode = a;
+      gmesa->dirty |= GAMMA_UPLOAD_ALPHA;
+   }
+   if ( gmesa->AlphaBlendMode != b) {
+      gmesa->AlphaBlendMode = b;
+      gmesa->dirty |= GAMMA_UPLOAD_BLEND;
+   }
+   gmesa->AB_FBReadMode_Save = f;
+}
+
+static void gammaDDAlphaFunc( GLcontext *ctx, GLenum func, GLfloat ref )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   (void) ref;
+
+   FLUSH_BATCH( gmesa );
+
+   gmesa->new_state |= GAMMA_NEW_ALPHA;
+}
+
+static void gammaDDBlendEquation( GLcontext *ctx, GLenum mode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   gmesa->new_state |= GAMMA_NEW_ALPHA;
+}
+
+static void gammaDDBlendFunc( GLcontext *ctx, GLenum sfactor, GLenum dfactor )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   gmesa->new_state |= GAMMA_NEW_ALPHA;
+}
+
+static void gammaDDBlendFuncSeparate( GLcontext *ctx,
+				     GLenum sfactorRGB, GLenum dfactorRGB,
+				     GLenum sfactorA, GLenum dfactorA )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   gmesa->new_state |= GAMMA_NEW_ALPHA;
+}
+
+
+/* ================================================================
+ * Buffer clear
+ */
+
+static void gammaDDClear( GLcontext *ctx, GLbitfield mask, GLboolean all,
+			       GLint cx, GLint cy, GLint cw, GLint ch )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   GLINTDRIPtr gDRIPriv = (GLINTDRIPtr)gmesa->driScreen->pDevPriv;
+   GLuint temp = 0;
+
+   FLUSH_BATCH( gmesa );
+
+   /* Update and emit any new state.  We need to do this here to catch
+    * changes to the masks.
+    * FIXME: Just update the masks?
+    */
+   if ( gmesa->new_state )
+      gammaDDUpdateHWState( ctx );
+
+#ifdef DO_VALIDATE
+    /* Flush any partially filled buffers */
+    FLUSH_DMA_BUFFER(gmesa);
+
+    DRM_SPINLOCK(&gmesa->driScreen->pSAREA->drawable_lock,
+		 gmesa->driScreen->drawLockID);
+    VALIDATE_DRAWABLE_INFO_NO_LOCK(gmesa);
+#endif
+
+    if (mask & DD_DEPTH_BIT) {
+	 /* Turn off writes the FB */
+	 CHECK_DMA_BUFFER(gmesa, 1);
+	 WRITE(gmesa->buf, FBWriteMode, FBWriteModeDisable);
+
+	 mask &= ~DD_DEPTH_BIT;
+
+	 /*
+	  * Turn Rectangle2DControl off when the window is not clipped
+	  * (i.e., the GID tests are not necessary).  This dramatically
+	  * increases the performance of the depth clears.
+	  */
+	 if (!gmesa->NotClipped) {
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITE(gmesa->buf, Rectangle2DControl, 1);
+	 }
+
+	 temp = (gmesa->LBReadMode & LBPartialProdMask) | LBWindowOriginBot;
+	 if (gDRIPriv->numMultiDevices == 2) temp |= LBScanLineInt2;
+	 
+	 CHECK_DMA_BUFFER(gmesa, 5);
+	 WRITE(gmesa->buf, LBReadMode, temp);
+	 WRITE(gmesa->buf, DeltaMode, DM_DepthEnable);
+	 WRITE(gmesa->buf, DepthMode, (DepthModeEnable |
+					DM_Always |
+					DM_SourceDepthRegister |
+					DM_WriteMask));
+	 WRITE(gmesa->buf, GLINTDepth, gmesa->ClearDepth);
+
+	 /* Increment the frame count */
+	 gmesa->FrameCount++;
+#ifdef FAST_CLEAR_4
+	 gmesa->FrameCount &= 0x0f;
+#else
+	 gmesa->FrameCount &= 0xff;
+#endif
+
+	 /* Force FCP to be written */
+	 WRITE(gmesa->buf, GLINTWindow, (WindowEnable |
+					  W_PassIfEqual |
+					  (gmesa->Window & W_GIDMask) |
+					  W_DepthFCP |
+					  W_LBUpdateFromRegisters |
+					  W_OverrideWriteFiltering |
+					  (gmesa->FrameCount << 9)));
+
+	/* Clear part of the depth and FCP buffers */
+	{
+	    int y = gmesa->driScreen->fbHeight - gmesa->driDrawable->y - gmesa->driDrawable->h;
+	    int x = gmesa->driDrawable->x;
+	    int w = gmesa->driDrawable->w;
+	    int h = gmesa->driDrawable->h;
+#ifndef TURN_OFF_FCP
+	    float hsub = h;
+
+	    if (gmesa->WindowChanged) {
+		gmesa->WindowChanged = GL_FALSE;
+	    } else {
+#ifdef FAST_CLEAR_4
+		hsub /= 16;
+#else
+		hsub /= 256;
+#endif
+
+		/* Handle the case where the height < # of FCPs */
+		if (hsub < 1.0) {
+		    if (gmesa->FrameCount > h)
+			gmesa->FrameCount = 0;
+		    h = 1;
+		    y += gmesa->FrameCount;
+		} else {
+		    h = (gmesa->FrameCount+1)*hsub;
+		    h -= (int)(gmesa->FrameCount*hsub);
+		    y += gmesa->FrameCount*hsub;
+		}
+	    }
+#endif
+	    if (h && w) {
+#if 0
+		CHECK_DMA_BUFFER(gmesa, 2);
+		WRITE(gmesa->buf, Rectangle2DMode, ((h & 0xfff)<<12) |
+						   (w & 0xfff) );
+		WRITE(gmesa->buf, DrawRectangle2D, ((y & 0xffff)<<16) |
+						   (x & 0xffff) );
+#else
+		CHECK_DMA_BUFFER(gmesa, 8);
+		WRITE(gmesa->buf, StartXDom,   x<<16);
+		WRITE(gmesa->buf, StartY,      y<<16);
+		WRITE(gmesa->buf, StartXSub,   (x+w)<<16);
+		WRITE(gmesa->buf, GLINTCount,  h);
+		WRITE(gmesa->buf, dY,          1<<16);
+		WRITE(gmesa->buf, dXDom,       0<<16);
+		WRITE(gmesa->buf, dXSub,       0<<16);
+		WRITE(gmesa->buf, Render,      0x00000040); /* NOT_DONE */
+#endif
+	    }
+	}
+
+	CHECK_DMA_BUFFER(gmesa, 6);
+	WRITE(gmesa->buf, DepthMode, gmesa->DepthMode);
+	WRITE(gmesa->buf, DeltaMode, gmesa->DeltaMode);
+	WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode);
+	WRITE(gmesa->buf, GLINTWindow, gmesa->Window);
+	WRITE(gmesa->buf, FastClearDepth, gmesa->ClearDepth);
+	WRITE(gmesa->buf, FBWriteMode, FBWriteModeEnable);
+
+	/* Turn on Depth FCP */
+	if (gmesa->Window & W_DepthFCP) {
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITE(gmesa->buf, WindowOr, (gmesa->FrameCount << 9));
+	}
+
+	/* Turn off GID clipping if window is not clipped */
+	if (gmesa->NotClipped) {
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITE(gmesa->buf, Rectangle2DControl, 0);
+	}
+    }
+
+    if (mask & (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT)) {
+	int y = gmesa->driScreen->fbHeight - gmesa->driDrawable->y - gmesa->driDrawable->h;
+	int x = gmesa->driDrawable->x;
+	int w = gmesa->driDrawable->w;
+	int h = gmesa->driDrawable->h;
+
+	mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
+
+	if (x < 0) { w -= -x; x = 0; }
+
+	/* Turn on GID clipping if window is clipped */
+	if (!gmesa->NotClipped) {
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITE(gmesa->buf, Rectangle2DControl, 1);
+	}
+
+        CHECK_DMA_BUFFER(gmesa, 18);
+        WRITE(gmesa->buf, FBBlockColor, gmesa->ClearColor);
+        WRITE(gmesa->buf, ColorDDAMode, ColorDDADisable);
+	WRITE(gmesa->buf, FBWriteMode, FBWriteModeEnable);
+	WRITE(gmesa->buf, DepthMode, 0);
+	WRITE(gmesa->buf, DeltaMode, 0);
+	WRITE(gmesa->buf, AlphaBlendMode, 0);
+#if 1
+	WRITE(gmesa->buf, dY,          1<<16);
+	WRITE(gmesa->buf, dXDom,       0<<16);
+	WRITE(gmesa->buf, dXSub,       0<<16);
+	WRITE(gmesa->buf, StartXSub,   (x+w)<<16);
+	WRITE(gmesa->buf, GLINTCount,  h);
+	WRITE(gmesa->buf, StartXDom,   x<<16);
+	WRITE(gmesa->buf, StartY,      y<<16);
+	WRITE(gmesa->buf, Render,      0x00000048); /* NOT_DONE */
+#else
+	WRITE(gmesa->buf, Rectangle2DMode, (((h & 0xfff)<<12) |
+					      (w & 0xfff)));
+	WRITE(gmesa->buf, DrawRectangle2D, (((y & 0xffff)<<16) |
+					      (x & 0xffff)));
+#endif
+	WRITE(gmesa->buf, DepthMode, gmesa->DepthMode);
+	WRITE(gmesa->buf, DeltaMode, gmesa->DeltaMode);
+	WRITE(gmesa->buf, AlphaBlendMode, gmesa->AlphaBlendMode);
+	WRITE(gmesa->buf, ColorDDAMode, gmesa->ColorDDAMode);
+
+	/* Turn off GID clipping if window is clipped */
+	if (gmesa->NotClipped) {
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITE(gmesa->buf, Rectangle2DControl, 0);
+	}
+    }
+
+#ifdef DO_VALIDATE
+    PROCESS_DMA_BUFFER_TOP_HALF(gmesa);
+
+    DRM_SPINUNLOCK(&gmesa->driScreen->pSAREA->drawable_lock,
+		   gmesa->driScreen->drawLockID);
+    VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(gmesa);
+
+    PROCESS_DMA_BUFFER_BOTTOM_HALF(gmesa);
+#endif
+
+   if ( mask )
+      _swrast_Clear( ctx, mask, all, cx, cy, cw, ch );
+}
+
+/* =============================================================
+ * Depth testing
+ */
+
+static void gammaUpdateZMode( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 z = gmesa->DepthMode;
+   CARD32 delta = gmesa->DeltaMode;
+   CARD32 window = gmesa->Window;
+   CARD32 lbread = gmesa->LBReadMode;
+
+   z &= ~DM_CompareMask;
+
+   switch ( ctx->Depth.Func ) {
+      case GL_NEVER:
+	 z |= DM_Never;
+	 break;
+      case GL_ALWAYS:
+	 z |= DM_Always;
+	 break;
+      case GL_LESS:
+	 z |= DM_Less;
+	 break;
+      case GL_LEQUAL:
+	 z |= DM_LessEqual;
+	 break;
+      case GL_EQUAL:
+	 z |= DM_Equal;
+	 break;
+      case GL_GEQUAL:
+	 z |= DM_GreaterEqual;
+	 break;
+      case GL_GREATER:
+	 z |= DM_Greater;
+	 break;
+      case GL_NOTEQUAL:
+	 z |= DM_NotEqual;
+	 break;
+   }
+
+   if ( ctx->Depth.Test ) {
+      z      |= DepthModeEnable;
+      delta  |= DM_DepthEnable;
+      window |= W_DepthFCP;
+      lbread |= LBReadDstEnable;
+   } else {
+      z      &= ~DepthModeEnable;
+      delta  &= ~DM_DepthEnable;
+      window &= ~W_DepthFCP;
+      lbread &= ~LBReadDstEnable;
+   }
+
+   if ( ctx->Depth.Mask ) {
+      z |= DM_WriteMask;
+   } else {
+      z &= ~DM_WriteMask;
+   }
+
+#if 0
+   if ( gmesa->DepthMode != z ){
+#endif
+      gmesa->DepthMode = z;
+      gmesa->DeltaMode = delta;
+      gmesa->Window = window;
+      gmesa->LBReadMode = lbread;
+      gmesa->dirty |= GAMMA_UPLOAD_DEPTH;
+#if 0
+   }
+#endif
+}
+
+static void gammaDDDepthFunc( GLcontext *ctx, GLenum func )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_DEPTH;
+}
+
+static void gammaDDDepthMask( GLcontext *ctx, GLboolean flag )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_DEPTH;
+}
+
+static void gammaDDClearDepth( GLcontext *ctx, GLclampd d )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   switch ( gmesa->DepthSize ) {
+   case 16:
+      gmesa->ClearDepth = d * 0x0000ffff;
+      break;
+   case 24:
+      gmesa->ClearDepth = d * 0x00ffffff;
+      break;
+   case 32:
+      gmesa->ClearDepth = d * 0xffffffff;
+      break;
+   }
+}
+
+static void gammaDDFinish( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_DMA_BUFFER(gmesa);
+}
+
+static void gammaDDFlush( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_DMA_BUFFER(gmesa);
+}
+
+/* =============================================================
+ * Fog
+ */
+
+static void gammaUpdateFogAttrib( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 f = gmesa->FogMode;
+   CARD32 g = gmesa->GeometryMode;
+   CARD32 d = gmesa->DeltaMode;
+
+   if (ctx->Fog.Enabled) {
+      f |= FogModeEnable;
+      g |= GM_FogEnable;
+      d |= DM_FogEnable;
+   } else {
+      f &= ~FogModeEnable;
+      g &= ~GM_FogEnable;
+      d &= ~DM_FogEnable;
+   }
+
+   g &= ~GM_FogMask;
+
+   switch (ctx->Fog.Mode) {
+      case GL_LINEAR:
+         g |= GM_FogLinear;
+         break;
+      case GL_EXP:
+         g |= GM_FogExp;
+         break;
+      case GL_EXP2:
+         g |= GM_FogExpSquared;
+         break;
+   }
+
+   if ( gmesa->FogMode != f ) {
+      gmesa->FogMode = f;
+      gmesa->dirty |= GAMMA_UPLOAD_FOG;
+   }
+ 
+   if ( gmesa->GeometryMode != g ) {
+      gmesa->GeometryMode = g;
+      gmesa->dirty |= GAMMA_UPLOAD_GEOMETRY;
+   }
+
+   if ( gmesa->DeltaMode != d ) {
+      gmesa->DeltaMode = d;
+      gmesa->dirty |= GAMMA_UPLOAD_DEPTH;
+   }
+}
+
+static void gammaDDFogfv( GLcontext *ctx, GLenum pname, const GLfloat *param )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_FOG;
+}
+
+/* =============================================================
+ * Lines
+ */
+static void gammaDDLineWidth( GLcontext *ctx, GLfloat width )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   CHECK_DMA_BUFFER(gmesa, 3);
+   WRITE(gmesa->buf, LineWidth, (GLuint)width);
+   WRITEF(gmesa->buf, AAlineWidth, width);
+   WRITE(gmesa->buf, LineWidthOffset, (GLuint)(width-1)/2);
+}
+
+static void gammaDDLineStipple( GLcontext *ctx, GLint factor, GLushort pattern )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   gmesa->LineMode &= ~(LM_StippleMask | LM_RepeatFactorMask);
+   gmesa->LineMode |= ((GLuint)(factor - 1) << 1) | ((GLuint)pattern << 10); 
+
+   gmesa->dirty |= GAMMA_UPLOAD_LINEMODE;
+}
+
+
+
+/* =============================================================
+ * Points
+ */
+static void gammaDDPointSize( GLcontext *ctx, GLfloat size )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   CHECK_DMA_BUFFER(gmesa, 2);
+   WRITE(gmesa->buf, PointSize, (GLuint)size);
+   WRITEF(gmesa->buf, AApointSize, size);
+}
+
+/* =============================================================
+ * Polygon 
+ */
+
+static void gammaUpdatePolygon( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 g = gmesa->GeometryMode;
+
+   g &= ~(GM_PolyOffsetFillEnable | GM_PolyOffsetPointEnable |
+          GM_PolyOffsetLineEnable);
+
+   if (ctx->Polygon.OffsetFill) g |= GM_PolyOffsetFillEnable;
+   if (ctx->Polygon.OffsetPoint) g |= GM_PolyOffsetPointEnable;
+   if (ctx->Polygon.OffsetLine) g |= GM_PolyOffsetLineEnable;
+
+   g &= ~GM_FB_PolyMask;
+
+   switch (ctx->Polygon.FrontMode) {
+      case GL_FILL:
+         g |= GM_FrontPolyFill;
+         break;
+      case GL_LINE:
+         g |= GM_FrontPolyLine;
+         break;
+      case GL_POINT:
+         g |= GM_FrontPolyPoint;
+         break;
+   }
+
+   switch (ctx->Polygon.BackMode) {
+      case GL_FILL:
+         g |= GM_BackPolyFill;
+         break;
+      case GL_LINE:
+         g |= GM_BackPolyLine;
+         break;
+      case GL_POINT:
+         g |= GM_BackPolyPoint;
+         break;
+   }
+
+   if ( gmesa->GeometryMode != g ) {
+      gmesa->GeometryMode = g;
+      gmesa->dirty |= GAMMA_UPLOAD_GEOMETRY;
+   }
+
+   gmesa->dirty |= GAMMA_UPLOAD_POLYGON;
+}
+
+static void gammaDDPolygonMode( GLcontext *ctx, GLenum face, GLenum mode)
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   gmesa->new_state |= GAMMA_NEW_POLYGON;
+}
+
+static void gammaUpdateStipple( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   if (ctx->Polygon.StippleFlag) {
+      gmesa->AreaStippleMode |= AreaStippleModeEnable/* | ASM_X32 | ASM_Y32*/;
+   } else {
+      gmesa->AreaStippleMode &= ~AreaStippleModeEnable;
+   }
+
+   gmesa->dirty |= GAMMA_UPLOAD_STIPPLE;
+}
+
+static void gammaDDPolygonStipple( GLcontext *ctx, const GLubyte *mask)
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_STIPPLE;
+}
+
+/* =============================================================
+ * Clipping
+ */
+
+static void gammaUpdateClipping( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   GLint x1, y1, x2, y2;
+
+   if ( gmesa->driDrawable ) {
+      x1 = gmesa->driDrawable->x + ctx->Scissor.X;
+      y1 = gmesa->driScreen->fbHeight -
+	(gmesa->driDrawable->y +
+	 gmesa->driDrawable->h) + ctx->Scissor.Y;
+      x2 = x1 + ctx->Scissor.Width;
+      y2 = y1 + ctx->Scissor.Height;
+
+      gmesa->ScissorMinXY = x1 | (y1 << 16);
+      gmesa->ScissorMaxXY = x2 | (y2 << 16);
+      if (ctx->Scissor.Enabled) 
+         gmesa->ScissorMode |= UserScissorEnable;
+      else
+         gmesa->ScissorMode &= ~UserScissorEnable;
+
+      gmesa->dirty |= GAMMA_UPLOAD_CLIP;
+   }
+}
+
+static void gammaDDScissor( GLcontext *ctx,
+			   GLint x, GLint y, GLsizei w, GLsizei h )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_CLIP;
+}
+
+/* =============================================================
+ * Culling
+ */
+
+static void gammaUpdateCull( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 g = gmesa->GeometryMode;
+
+   g &= ~(GM_PolyCullMask | GM_FFMask);
+
+   if (ctx->Polygon.FrontFace == GL_CCW) {
+      g |= GM_FrontFaceCCW;
+   } else {
+      g |= GM_FrontFaceCW;
+   }
+
+   switch ( ctx->Polygon.CullFaceMode ) {
+      case GL_FRONT:
+	 g |= GM_PolyCullFront;
+	 break;
+      case GL_BACK:
+	 g |= GM_PolyCullBack;
+	 break;
+      case GL_FRONT_AND_BACK:
+	 g |= GM_PolyCullBoth;
+	 break;
+   }
+
+   if ( ctx->Polygon.CullFlag ) {
+      g |= GM_PolyCullEnable;
+   } else {
+      g &= ~GM_PolyCullEnable;
+   }
+
+   if ( gmesa->GeometryMode != g ) {
+      gmesa->GeometryMode = g;
+      gmesa->dirty |= GAMMA_UPLOAD_GEOMETRY;
+   }
+}
+
+static void gammaDDCullFace( GLcontext *ctx, GLenum mode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_CULL;
+}
+
+static void gammaDDFrontFace( GLcontext *ctx, GLenum mode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_CULL;
+}
+
+/* =============================================================
+ * Masks
+ */
+
+static void gammaUpdateMasks( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+
+   GLuint mask = gammaPackColor( gmesa->gammaScreen->cpp,
+				ctx->Color.ColorMask[RCOMP],
+				ctx->Color.ColorMask[GCOMP],
+				ctx->Color.ColorMask[BCOMP],
+				ctx->Color.ColorMask[ACOMP] );
+
+   if (gmesa->gammaScreen->cpp == 2) mask |= mask << 16;
+
+   if ( gmesa->FBHardwareWriteMask != mask ) {
+      gmesa->FBHardwareWriteMask = mask;
+      gmesa->dirty |= GAMMA_UPLOAD_MASKS;
+   }
+}
+
+static void gammaDDColorMask( GLcontext *ctx, GLboolean r, GLboolean g,
+			      GLboolean b, GLboolean a)
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+   gmesa->new_state |= GAMMA_NEW_MASKS;
+}
+
+/* =============================================================
+ * Rendering attributes
+ *
+ * We really don't want to recalculate all this every time we bind a
+ * texture.  These things shouldn't change all that often, so it makes
+ * sense to break them out of the core texture state update routines.
+ */
+
+#if ENABLELIGHTING
+static void gammaDDLightfv(GLcontext *ctx, GLenum light, GLenum pname, 
+				const GLfloat *params, GLint nParams)
+{
+    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+    GLfloat l,x,y,z,w;
+
+    switch(light) {
+    case GL_LIGHT0:
+	switch (pname) {
+	case GL_AMBIENT:
+	    CHECK_DMA_BUFFER(gmesa, 3);
+	    /* We don't do alpha */
+	    WRITEF(gmesa->buf, Light0AmbientIntensityBlue, params[2]);
+	    WRITEF(gmesa->buf, Light0AmbientIntensityGreen, params[1]);
+	    WRITEF(gmesa->buf, Light0AmbientIntensityRed, params[0]);
+	    break;
+	case GL_DIFFUSE:
+	    CHECK_DMA_BUFFER(gmesa, 3);
+	    /* We don't do alpha */
+	    WRITEF(gmesa->buf, Light0DiffuseIntensityBlue, params[2]);
+	    WRITEF(gmesa->buf, Light0DiffuseIntensityGreen, params[1]);
+	    WRITEF(gmesa->buf, Light0DiffuseIntensityRed, params[0]);
+	    break;
+	case GL_SPECULAR:
+	    CHECK_DMA_BUFFER(gmesa, 3);
+	    /* We don't do alpha */
+	    WRITEF(gmesa->buf, Light0SpecularIntensityBlue, params[2]);
+	    WRITEF(gmesa->buf, Light0SpecularIntensityGreen, params[1]);
+	    WRITEF(gmesa->buf, Light0SpecularIntensityRed, params[0]);
+	    break;
+	case GL_POSITION:
+    	    /* Normalize <x,y,z> */
+	    x = params[0]; y = params[1]; z = params[2]; w = params[3];
+	    l = sqrt(x*x + y*y + z*z + w*w);
+	    w /= l;
+	    x /= l;
+	    y /= l;
+	    z /= l;
+	    if (params[3] != 0.0) {
+		gmesa->Light0Mode |= Light0ModeAttenuation;
+		gmesa->Light0Mode |= Light0ModeLocal;
+	    } else {
+		gmesa->Light0Mode &= ~Light0ModeAttenuation;
+		gmesa->Light0Mode &= ~Light0ModeLocal;
+	    }
+	    CHECK_DMA_BUFFER(gmesa, 5);
+	    WRITE(gmesa->buf, Light0Mode, gmesa->Light0Mode);
+	    WRITEF(gmesa->buf, Light0PositionW, w);
+	    WRITEF(gmesa->buf, Light0PositionZ, z);
+	    WRITEF(gmesa->buf, Light0PositionY, y);
+	    WRITEF(gmesa->buf, Light0PositionX, x);
+	    break;
+	case GL_SPOT_DIRECTION:
+	    CHECK_DMA_BUFFER(gmesa, 3);
+	    /* WRITEF(gmesa->buf, Light0SpotlightDirectionW, params[3]); */
+	    WRITEF(gmesa->buf, Light0SpotlightDirectionZ, params[2]);
+	    WRITEF(gmesa->buf, Light0SpotlightDirectionY, params[1]);
+	    WRITEF(gmesa->buf, Light0SpotlightDirectionX, params[0]);
+	    break;
+	case GL_SPOT_EXPONENT:
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITEF(gmesa->buf, Light0SpotlightExponent, params[0]);
+	    break;
+	case GL_SPOT_CUTOFF:
+	    if (params[0] != 180.0) 
+		gmesa->Light0Mode |= Light0ModeSpotLight;
+	    else
+		gmesa->Light0Mode &= ~Light0ModeSpotLight;
+	    CHECK_DMA_BUFFER(gmesa, 2);
+	    WRITE(gmesa->buf, Light0Mode, gmesa->Light0Mode);
+	    WRITEF(gmesa->buf, Light0CosSpotlightCutoffAngle, cos(params[0]*DEG2RAD));
+	    break;
+	case GL_CONSTANT_ATTENUATION:
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITEF(gmesa->buf, Light0ConstantAttenuation, params[0]);
+	    break;
+	case GL_LINEAR_ATTENUATION:
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITEF(gmesa->buf, Light0LinearAttenuation, params[0]);
+	    break;
+	case GL_QUADRATIC_ATTENUATION:
+	    CHECK_DMA_BUFFER(gmesa, 1);
+	    WRITEF(gmesa->buf, Light0QuadraticAttenuation, params[0]);
+	    break;
+	}
+	break;
+    }
+}
+
+static void gammaDDLightModelfv( GLcontext *ctx, GLenum pname,
+				const GLfloat *params )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   switch (pname) {
+   case GL_LIGHT_MODEL_AMBIENT:
+	CHECK_DMA_BUFFER(gmesa, 3);
+	/* We don't do alpha */
+	WRITEF(gmesa->buf, SceneAmbientColorBlue, params[2]);
+	WRITEF(gmesa->buf, SceneAmbientColorGreen, params[1]);
+	WRITEF(gmesa->buf, SceneAmbientColorRed, params[0]);
+	break;
+    case GL_LIGHT_MODEL_LOCAL_VIEWER:
+	if (params[0] != 0.0)
+	    gmesa->LightingMode |= LightingModeLocalViewer;
+	else
+	    gmesa->LightingMode &= ~LightingModeLocalViewer;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, LightingMode, gmesa->LightingMode);
+	break;
+    case GL_LIGHT_MODEL_TWO_SIDE:
+	if (params[0] == 1.0f) {
+	    gmesa->LightingMode |= LightingModeTwoSides;
+	    gmesa->MaterialMode |= MaterialModeTwoSides;
+	} else {
+	    gmesa->LightingMode &= ~LightingModeTwoSides;
+	    gmesa->MaterialMode &= ~MaterialModeTwoSides;
+	}
+	CHECK_DMA_BUFFER(gmesa, 2);
+	WRITE(gmesa->buf, LightingMode, gmesa->LightingMode);
+	WRITE(gmesa->buf, MaterialMode, gmesa->MaterialMode);
+	break;
+    }
+}
+#endif
+
+static void gammaDDShadeModel( GLcontext *ctx, GLenum mode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   CARD32 g = gmesa->GeometryMode;
+   CARD32 c = gmesa->ColorDDAMode;
+
+   g &= ~GM_ShadingMask;
+   c &= ~ColorDDAShadingMask;
+
+   switch ( mode ) {
+   case GL_FLAT:
+      g |= GM_FlatShading;
+      c |= ColorDDAFlat;
+      break;
+   case GL_SMOOTH:
+      g |= GM_GouraudShading;
+      c |= ColorDDAGouraud;
+      break;
+   default:
+      return;
+   }
+
+   if ( gmesa->ColorDDAMode != c ) {
+      FLUSH_BATCH( gmesa );
+      gmesa->ColorDDAMode = c;
+
+      gmesa->dirty |= GAMMA_UPLOAD_SHADE;
+   }
+
+   if ( gmesa->GeometryMode != g ) {
+      FLUSH_BATCH( gmesa );
+      gmesa->GeometryMode = g;
+
+      gmesa->dirty |= GAMMA_UPLOAD_GEOMETRY;
+   }
+}
+
+/* =============================================================
+ * Miscellaneous
+ */
+
+static void gammaDDClearColor( GLcontext *ctx, const GLfloat color[4])
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   GLubyte c[4];
+   UNCLAMPED_FLOAT_TO_UBYTE(c[0], color[0]);
+   UNCLAMPED_FLOAT_TO_UBYTE(c[1], color[1]);
+   UNCLAMPED_FLOAT_TO_UBYTE(c[2], color[2]);
+   UNCLAMPED_FLOAT_TO_UBYTE(c[3], color[3]);
+
+   gmesa->ClearColor = gammaPackColor( gmesa->gammaScreen->cpp,
+                                       c[0], c[1], c[2], c[3] );
+
+   if (gmesa->gammaScreen->cpp == 2) gmesa->ClearColor |= gmesa->ClearColor<<16;
+}
+
+
+static void gammaDDLogicalOpcode( GLcontext *ctx, GLenum opcode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   if ( ctx->Color.ColorLogicOpEnabled ) {
+      gmesa->LogicalOpMode = opcode << 1 | LogicalOpModeEnable;
+   } else {
+      gmesa->LogicalOpMode = LogicalOpModeDisable;
+   }
+
+   gmesa->dirty |= GAMMA_UPLOAD_LOGICOP;
+}
+
+static void gammaDDDrawBuffer( GLcontext *ctx, GLenum mode )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   FLUSH_BATCH( gmesa );
+
+   switch ( mode ) {
+   case GL_FRONT_LEFT:
+      gmesa->drawOffset = gmesa->readOffset = 0;
+      break;
+   case GL_BACK_LEFT:
+      gmesa->drawOffset = gmesa->readOffset = gmesa->driScreen->fbHeight * gmesa->driScreen->fbWidth * gmesa->gammaScreen->cpp; 
+      break;
+   }
+}
+
+static void gammaDDReadBuffer( GLcontext *ctx, GLenum mode )
+{
+   /* XXX anything? */
+}
+
+/* =============================================================
+ * Window position and viewport transformation
+ */
+
+void gammaUpdateWindow( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   __DRIdrawablePrivate *dPriv = gmesa->driDrawable;
+   GLfloat xoffset = (GLfloat)dPriv->x;
+   GLfloat yoffset = gmesa->driScreen->fbHeight - (GLfloat)dPriv->y - dPriv->h;
+   const GLfloat *v = ctx->Viewport._WindowMap.m;
+
+   GLfloat sx = v[MAT_SX];
+   GLfloat tx = v[MAT_TX] + xoffset;
+   GLfloat sy = v[MAT_SY];
+   GLfloat ty = v[MAT_TY] + yoffset;
+   GLfloat sz = v[MAT_SZ] * gmesa->depth_scale;
+   GLfloat tz = v[MAT_TZ] * gmesa->depth_scale;
+
+   gmesa->dirty |= GAMMA_UPLOAD_VIEWPORT;
+
+   gmesa->ViewportScaleX = sx;
+   gmesa->ViewportScaleY = sy;
+   gmesa->ViewportScaleZ = sz;
+   gmesa->ViewportOffsetX = tx;
+   gmesa->ViewportOffsetY = ty;
+   gmesa->ViewportOffsetZ = tz;
+}
+
+
+
+static void gammaDDViewport( GLcontext *ctx, GLint x, GLint y,
+			    GLsizei width, GLsizei height )
+{
+   gammaUpdateWindow( ctx );
+}
+
+static void gammaDDDepthRange( GLcontext *ctx, GLclampd nearval,
+			      GLclampd farval )
+{
+   gammaUpdateWindow( ctx );
+}
+
+void gammaUpdateViewportOffset( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   __DRIdrawablePrivate *dPriv = gmesa->driDrawable;
+   GLfloat xoffset = (GLfloat)dPriv->x;
+   GLfloat yoffset = gmesa->driScreen->fbHeight - (GLfloat)dPriv->y - dPriv->h;
+   const GLfloat *v = ctx->Viewport._WindowMap.m;
+
+   GLfloat tx = v[MAT_TX] + xoffset;
+   GLfloat ty = v[MAT_TY] + yoffset;
+
+   if ( gmesa->ViewportOffsetX != tx ||
+        gmesa->ViewportOffsetY != ty )
+   {
+      gmesa->ViewportOffsetX = tx;
+      gmesa->ViewportOffsetY = ty;
+
+      gmesa->new_state |= GAMMA_NEW_WINDOW;
+   }
+
+   gmesa->new_state |= GAMMA_NEW_CLIP;
+}
+
+#if 0
+/* 
+ * Matrix 
+ */
+
+static void gammaLoadHWMatrix(GLcontext *ctx)
+{
+    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+    const GLfloat *m;
+
+    gmesa->TransformMode &= ~XM_XformTexture;
+
+    switch (ctx->Transform.MatrixMode) {
+    case GL_MODELVIEW:
+	gmesa->TransformMode |= XM_UseModelViewMatrix;
+        m = ctx->ModelviewMatrixStack.Top->m;
+	CHECK_DMA_BUFFER(gmesa, 16);
+	WRITEF(gmesa->buf, ModelViewMatrix0,  m[0]);
+	WRITEF(gmesa->buf, ModelViewMatrix1,  m[1]);
+	WRITEF(gmesa->buf, ModelViewMatrix2,  m[2]);
+	WRITEF(gmesa->buf, ModelViewMatrix3,  m[3]);
+	WRITEF(gmesa->buf, ModelViewMatrix4,  m[4]);
+	WRITEF(gmesa->buf, ModelViewMatrix5,  m[5]);
+	WRITEF(gmesa->buf, ModelViewMatrix6,  m[6]);
+	WRITEF(gmesa->buf, ModelViewMatrix7,  m[7]);
+	WRITEF(gmesa->buf, ModelViewMatrix8,  m[8]);
+	WRITEF(gmesa->buf, ModelViewMatrix9,  m[9]);
+	WRITEF(gmesa->buf, ModelViewMatrix10, m[10]);
+	WRITEF(gmesa->buf, ModelViewMatrix11, m[11]);
+	WRITEF(gmesa->buf, ModelViewMatrix12, m[12]);
+	WRITEF(gmesa->buf, ModelViewMatrix13, m[13]);
+	WRITEF(gmesa->buf, ModelViewMatrix14, m[14]);
+	WRITEF(gmesa->buf, ModelViewMatrix15, m[15]);
+	break;
+    case GL_PROJECTION:
+        m = ctx->ProjectionMatrixStack.Top->m;
+	CHECK_DMA_BUFFER(gmesa, 16);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix0, m[0]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix1, m[1]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix2, m[2]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix3, m[3]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix4, m[4]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix5, m[5]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix6, m[6]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix7, m[7]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix8, m[8]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix9, m[9]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix10, m[10]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix11, m[11]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix12, m[12]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix13, m[13]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix14, m[14]);
+	WRITEF(gmesa->buf, ModelViewProjectionMatrix15, m[15]);
+	break;
+    case GL_TEXTURE:
+        m = ctx->TextureMatrixStack[0].Top->m;
+	CHECK_DMA_BUFFER(gmesa, 16);
+	gmesa->TransformMode |= XM_XformTexture;
+	WRITEF(gmesa->buf, TextureMatrix0,  m[0]);
+	WRITEF(gmesa->buf, TextureMatrix1,  m[1]);
+	WRITEF(gmesa->buf, TextureMatrix2,  m[2]);
+	WRITEF(gmesa->buf, TextureMatrix3,  m[3]);
+	WRITEF(gmesa->buf, TextureMatrix4,  m[4]);
+	WRITEF(gmesa->buf, TextureMatrix5,  m[5]);
+	WRITEF(gmesa->buf, TextureMatrix6,  m[6]);
+	WRITEF(gmesa->buf, TextureMatrix7,  m[7]);
+	WRITEF(gmesa->buf, TextureMatrix8,  m[8]);
+	WRITEF(gmesa->buf, TextureMatrix9,  m[9]);
+	WRITEF(gmesa->buf, TextureMatrix10,  m[10]);
+	WRITEF(gmesa->buf, TextureMatrix11,  m[11]);
+	WRITEF(gmesa->buf, TextureMatrix12,  m[12]);
+	WRITEF(gmesa->buf, TextureMatrix13,  m[13]);
+	WRITEF(gmesa->buf, TextureMatrix14,  m[14]);
+	WRITEF(gmesa->buf, TextureMatrix15,  m[15]);
+	break;
+
+    default:
+	/* ERROR!!! -- how did this happen? */
+	break;
+    }
+
+    gmesa->dirty |= GAMMA_UPLOAD_TRANSFORM;
+}
+#endif
+
+/* =============================================================
+ * State enable/disable
+ */
+
+static void gammaDDEnable( GLcontext *ctx, GLenum cap, GLboolean state )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+
+   switch ( cap ) {
+   case GL_ALPHA_TEST:
+   case GL_BLEND:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_ALPHA;
+      break;
+
+   case GL_CULL_FACE:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_CULL;
+      break;
+
+   case GL_DEPTH_TEST:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_DEPTH;
+      break;
+
+   case GL_DITHER:
+      do {
+	 CARD32 d = gmesa->DitherMode;
+	 FLUSH_BATCH( gmesa );
+
+	 if ( state ) {
+	    d |=  DM_DitherEnable;
+	 } else {
+	    d &= ~DM_DitherEnable;
+	 }
+
+	 if ( gmesa->DitherMode != d ) {
+	    gmesa->DitherMode = d;
+	    gmesa->dirty |= GAMMA_UPLOAD_DITHER;
+	 }
+      } while (0);
+      break;
+
+#if 0
+   case GL_FOG:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_FOG;
+      break;
+#endif
+
+   case GL_INDEX_LOGIC_OP:
+   case GL_COLOR_LOGIC_OP:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_LOGICOP;
+      break;
+
+#if ENABLELIGHTING
+   case GL_LIGHTING:
+      do {
+	 CARD32 l = gmesa->LightingMode;
+	 FLUSH_BATCH( gmesa );
+
+	 if ( state ) {
+	    l |=  LightingModeEnable;
+	 } else {
+	    l &= ~LightingModeEnable;
+	 }
+
+	 if ( gmesa->LightingMode != l ) {
+	    gmesa->LightingMode = l;
+	    gmesa->dirty |= GAMMA_UPLOAD_LIGHT;
+	 }
+      } while (0);
+      break;
+
+   case GL_COLOR_MATERIAL:
+      do {
+	 CARD32 m = gmesa->MaterialMode;
+	 FLUSH_BATCH( gmesa );
+
+	 if ( state ) {
+	    m |=  MaterialModeEnable;
+	 } else {
+	    m &= ~MaterialModeEnable;
+	 }
+
+	 if ( gmesa->MaterialMode != m ) {
+	    gmesa->MaterialMode = m;
+	    gmesa->dirty |= GAMMA_UPLOAD_LIGHT;
+	 }
+      } while (0);
+      break;
+#endif
+
+   case GL_LINE_SMOOTH:
+      FLUSH_BATCH( gmesa );
+      if ( state ) {
+         gmesa->AntialiasMode |= AntialiasModeEnable;
+         gmesa->LineMode |= LM_AntialiasEnable;
+      } else {
+         gmesa->AntialiasMode &= ~AntialiasModeEnable;
+         gmesa->LineMode &= ~LM_AntialiasEnable;
+      }
+      gmesa->dirty |= GAMMA_UPLOAD_LINEMODE;
+      break;
+
+   case GL_POINT_SMOOTH:
+      FLUSH_BATCH( gmesa );
+      if ( state ) {
+         gmesa->AntialiasMode |= AntialiasModeEnable;
+         gmesa->PointMode |= PM_AntialiasEnable;
+      } else {
+         gmesa->AntialiasMode &= ~AntialiasModeEnable;
+         gmesa->PointMode &= ~PM_AntialiasEnable;
+      }
+      gmesa->dirty |= GAMMA_UPLOAD_POINTMODE;
+      break;
+
+   case GL_POLYGON_SMOOTH:
+      FLUSH_BATCH( gmesa );
+      if ( state ) {
+         gmesa->AntialiasMode |= AntialiasModeEnable;
+         gmesa->TriangleMode |= TM_AntialiasEnable;
+      } else {
+         gmesa->AntialiasMode &= ~AntialiasModeEnable;
+         gmesa->TriangleMode &= ~TM_AntialiasEnable;
+      }
+      gmesa->dirty |= GAMMA_UPLOAD_TRIMODE;
+      break;
+
+   case GL_SCISSOR_TEST:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_CLIP;
+      break;
+
+   case GL_POLYGON_OFFSET_FILL:
+   case GL_POLYGON_OFFSET_POINT:
+   case GL_POLYGON_OFFSET_LINE:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_POLYGON;
+      break;
+
+   case GL_LINE_STIPPLE:
+      FLUSH_BATCH( gmesa );
+      if ( state )
+         gmesa->LineMode |= LM_StippleEnable;
+      else
+         gmesa->LineMode &= ~LM_StippleEnable;
+      gmesa->dirty |= GAMMA_UPLOAD_LINEMODE;
+      break;
+
+   case GL_POLYGON_STIPPLE:
+      FLUSH_BATCH( gmesa );
+      gmesa->new_state |= GAMMA_NEW_STIPPLE;
+      break;
+
+   default:
+      return;
+   }
+}
+
+/* =============================================================
+ * State initialization, management
+ */
+
+
+/*
+ * Load the current context's state into the hardware.
+ *
+ * NOTE: Be VERY careful about ensuring the context state is marked for
+ * upload, the only place it shouldn't be uploaded is when the setup
+ * state has changed in ReducedPrimitiveChange as this comes right after
+ * a state update.
+ *
+ * Blits of any type should always upload the context and masks after
+ * they are done.
+ */
+void gammaEmitHwState( gammaContextPtr gmesa )
+{
+    if (!gmesa->driDrawable) return;
+
+    if (!gmesa->dirty) return;
+
+#ifdef DO_VALIDATE
+    /* Flush any partially filled buffers */
+    FLUSH_DMA_BUFFER(gmesa);
+
+    DRM_SPINLOCK(&gmesa->driScreen->pSAREA->drawable_lock,
+		 gmesa->driScreen->drawLockID);
+    VALIDATE_DRAWABLE_INFO_NO_LOCK(gmesa);
+#endif
+
+    if (gmesa->dirty & GAMMA_UPLOAD_VIEWPORT) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_VIEWPORT;
+ 	CHECK_DMA_BUFFER(gmesa, 6);
+ 	WRITEF(gmesa->buf, ViewPortOffsetX, gmesa->ViewportOffsetX);
+ 	WRITEF(gmesa->buf, ViewPortOffsetY, gmesa->ViewportOffsetY);
+ 	WRITEF(gmesa->buf, ViewPortOffsetZ, gmesa->ViewportOffsetZ);
+ 	WRITEF(gmesa->buf, ViewPortScaleX, gmesa->ViewportScaleX);
+ 	WRITEF(gmesa->buf, ViewPortScaleY, gmesa->ViewportScaleY);
+ 	WRITEF(gmesa->buf, ViewPortScaleZ, gmesa->ViewportScaleZ);
+    }
+    if ( (gmesa->dirty & GAMMA_UPLOAD_POINTMODE) ||
+	 (gmesa->dirty & GAMMA_UPLOAD_LINEMODE) ||
+	 (gmesa->dirty & GAMMA_UPLOAD_TRIMODE) ) {
+ 	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, AntialiasMode, gmesa->AntialiasMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_POINTMODE) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_POINTMODE;
+ 	CHECK_DMA_BUFFER(gmesa, 1);
+ 	WRITE(gmesa->buf, PointMode, gmesa->PointMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_LINEMODE) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_LINEMODE;
+ 	CHECK_DMA_BUFFER(gmesa, 2);
+ 	WRITE(gmesa->buf, LineMode, gmesa->LineMode);
+ 	WRITE(gmesa->buf, LineStippleMode, gmesa->LineMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_TRIMODE) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_TRIMODE;
+ 	CHECK_DMA_BUFFER(gmesa, 1);
+ 	WRITE(gmesa->buf, TriangleMode, gmesa->TriangleMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_FOG) {
+	GLchan c[3], col;
+   	UNCLAMPED_FLOAT_TO_RGB_CHAN( c, gmesa->glCtx->Fog.Color );
+	col = gammaPackColor(4, c[0], c[1], c[2], 0);
+	gmesa->dirty &= ~GAMMA_UPLOAD_FOG;
+	CHECK_DMA_BUFFER(gmesa, 5);
+#if 0
+	WRITE(gmesa->buf, FogMode, gmesa->FogMode);
+	WRITE(gmesa->buf, FogColor, col);
+	WRITEF(gmesa->buf, FStart, gmesa->glCtx->Fog.Start);
+#endif
+	WRITEF(gmesa->buf, FogEnd, gmesa->glCtx->Fog.End);
+	WRITEF(gmesa->buf, FogDensity, gmesa->glCtx->Fog.Density);
+	WRITEF(gmesa->buf, FogScale, 
+		1.0f/(gmesa->glCtx->Fog.End - gmesa->glCtx->Fog.Start));
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_DITHER) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_DITHER;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, DitherMode, gmesa->DitherMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_LOGICOP) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_LOGICOP;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, LogicalOpMode, gmesa->LogicalOpMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_CLIP) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_CLIP;
+	CHECK_DMA_BUFFER(gmesa, 3);
+	WRITE(gmesa->buf, ScissorMinXY, gmesa->ScissorMinXY);
+	WRITE(gmesa->buf, ScissorMaxXY, gmesa->ScissorMaxXY);
+	WRITE(gmesa->buf, ScissorMode, gmesa->ScissorMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_MASKS) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_MASKS;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, FBHardwareWriteMask, gmesa->FBHardwareWriteMask);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_ALPHA) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_ALPHA;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, AlphaTestMode, gmesa->AlphaTestMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_BLEND) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_BLEND;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, AlphaBlendMode, gmesa->AlphaBlendMode);
+    } 
+    CHECK_DMA_BUFFER(gmesa, 1);
+    if (gmesa->glCtx->Color.BlendEnabled || gmesa->glCtx->Color.AlphaEnabled) {
+    	WRITE(gmesa->buf, FBReadMode, gmesa->FBReadMode | gmesa->AB_FBReadMode_Save);
+    } else {
+    	WRITE(gmesa->buf, FBReadMode, gmesa->FBReadMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_LIGHT) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_LIGHT;
+	CHECK_DMA_BUFFER(gmesa, 2);
+	WRITE(gmesa->buf, LightingMode, gmesa->LightingMode);
+	WRITE(gmesa->buf, MaterialMode, gmesa->MaterialMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_SHADE) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_SHADE;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, ColorDDAMode, gmesa->ColorDDAMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_POLYGON) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_POLYGON;
+	CHECK_DMA_BUFFER(gmesa, 2);
+	WRITEF(gmesa->buf, PolygonOffsetBias, gmesa->glCtx->Polygon.OffsetUnits);
+	WRITEF(gmesa->buf, PolygonOffsetFactor, gmesa->glCtx->Polygon.OffsetFactor);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_STIPPLE) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_STIPPLE;
+	CHECK_DMA_BUFFER(gmesa, 33);
+	WRITE(gmesa->buf, AreaStippleMode, gmesa->AreaStippleMode);
+	WRITE(gmesa->buf, AreaStipplePattern0, gmesa->glCtx->PolygonStipple[0]);
+	WRITE(gmesa->buf, AreaStipplePattern1, gmesa->glCtx->PolygonStipple[1]);
+	WRITE(gmesa->buf, AreaStipplePattern2, gmesa->glCtx->PolygonStipple[2]);
+	WRITE(gmesa->buf, AreaStipplePattern3, gmesa->glCtx->PolygonStipple[3]);
+	WRITE(gmesa->buf, AreaStipplePattern4, gmesa->glCtx->PolygonStipple[4]);
+	WRITE(gmesa->buf, AreaStipplePattern5, gmesa->glCtx->PolygonStipple[5]);
+	WRITE(gmesa->buf, AreaStipplePattern6, gmesa->glCtx->PolygonStipple[6]);
+	WRITE(gmesa->buf, AreaStipplePattern7, gmesa->glCtx->PolygonStipple[7]);
+	WRITE(gmesa->buf, AreaStipplePattern8, gmesa->glCtx->PolygonStipple[8]);
+	WRITE(gmesa->buf, AreaStipplePattern9, gmesa->glCtx->PolygonStipple[9]);
+	WRITE(gmesa->buf, AreaStipplePattern10, gmesa->glCtx->PolygonStipple[10]);
+	WRITE(gmesa->buf, AreaStipplePattern11, gmesa->glCtx->PolygonStipple[11]);
+	WRITE(gmesa->buf, AreaStipplePattern12, gmesa->glCtx->PolygonStipple[12]);
+	WRITE(gmesa->buf, AreaStipplePattern13, gmesa->glCtx->PolygonStipple[13]);
+	WRITE(gmesa->buf, AreaStipplePattern14, gmesa->glCtx->PolygonStipple[14]);
+	WRITE(gmesa->buf, AreaStipplePattern15, gmesa->glCtx->PolygonStipple[15]);
+	WRITE(gmesa->buf, AreaStipplePattern16, gmesa->glCtx->PolygonStipple[16]);
+	WRITE(gmesa->buf, AreaStipplePattern17, gmesa->glCtx->PolygonStipple[17]);
+	WRITE(gmesa->buf, AreaStipplePattern18, gmesa->glCtx->PolygonStipple[18]);
+	WRITE(gmesa->buf, AreaStipplePattern19, gmesa->glCtx->PolygonStipple[19]);
+	WRITE(gmesa->buf, AreaStipplePattern20, gmesa->glCtx->PolygonStipple[20]);
+	WRITE(gmesa->buf, AreaStipplePattern21, gmesa->glCtx->PolygonStipple[21]);
+	WRITE(gmesa->buf, AreaStipplePattern22, gmesa->glCtx->PolygonStipple[22]);
+	WRITE(gmesa->buf, AreaStipplePattern23, gmesa->glCtx->PolygonStipple[23]);
+	WRITE(gmesa->buf, AreaStipplePattern24, gmesa->glCtx->PolygonStipple[24]);
+	WRITE(gmesa->buf, AreaStipplePattern25, gmesa->glCtx->PolygonStipple[25]);
+	WRITE(gmesa->buf, AreaStipplePattern26, gmesa->glCtx->PolygonStipple[26]);
+	WRITE(gmesa->buf, AreaStipplePattern27, gmesa->glCtx->PolygonStipple[27]);
+	WRITE(gmesa->buf, AreaStipplePattern28, gmesa->glCtx->PolygonStipple[28]);
+	WRITE(gmesa->buf, AreaStipplePattern29, gmesa->glCtx->PolygonStipple[29]);
+	WRITE(gmesa->buf, AreaStipplePattern30, gmesa->glCtx->PolygonStipple[30]);
+	WRITE(gmesa->buf, AreaStipplePattern31, gmesa->glCtx->PolygonStipple[31]);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_DEPTH) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_DEPTH;
+	CHECK_DMA_BUFFER(gmesa, 4);
+	WRITE(gmesa->buf, DepthMode,  gmesa->DepthMode);
+	WRITE(gmesa->buf, DeltaMode,  gmesa->DeltaMode);
+	WRITE(gmesa->buf, GLINTWindow,gmesa->Window | (gmesa->FrameCount << 9));
+	WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_GEOMETRY) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_GEOMETRY;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, GeometryMode, gmesa->GeometryMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_TRANSFORM) {
+	gmesa->dirty &= ~GAMMA_UPLOAD_TRANSFORM;
+	CHECK_DMA_BUFFER(gmesa, 1);
+	WRITE(gmesa->buf, TransformMode, gmesa->TransformMode);
+    }
+    if (gmesa->dirty & GAMMA_UPLOAD_TEX0) {
+	gammaTextureObjectPtr curTex = gmesa->CurrentTexObj[0];
+	gmesa->dirty &= ~GAMMA_UPLOAD_TEX0;
+	if (curTex) {
+	CHECK_DMA_BUFFER(gmesa, 21);
+	WRITE(gmesa->buf, GeometryMode, gmesa->GeometryMode | GM_TextureEnable);
+	WRITE(gmesa->buf, DeltaMode, gmesa->DeltaMode | DM_TextureEnable);
+	WRITE(gmesa->buf, TextureAddressMode, curTex->TextureAddressMode);
+	WRITE(gmesa->buf, TextureReadMode, curTex->TextureReadMode);
+	WRITE(gmesa->buf, TextureColorMode, curTex->TextureColorMode);
+	WRITE(gmesa->buf, TextureFilterMode, curTex->TextureFilterMode);
+	WRITE(gmesa->buf, TextureFormat, curTex->TextureFormat);
+	WRITE(gmesa->buf, GLINTBorderColor, curTex->TextureBorderColor);
+	WRITE(gmesa->buf, TxBaseAddr0, curTex->TextureBaseAddr[0]);
+	WRITE(gmesa->buf, TxBaseAddr1, curTex->TextureBaseAddr[1]);
+	WRITE(gmesa->buf, TxBaseAddr2, curTex->TextureBaseAddr[2]);
+	WRITE(gmesa->buf, TxBaseAddr3, curTex->TextureBaseAddr[3]);
+	WRITE(gmesa->buf, TxBaseAddr4, curTex->TextureBaseAddr[4]);
+	WRITE(gmesa->buf, TxBaseAddr5, curTex->TextureBaseAddr[5]);
+	WRITE(gmesa->buf, TxBaseAddr6, curTex->TextureBaseAddr[6]);
+	WRITE(gmesa->buf, TxBaseAddr7, curTex->TextureBaseAddr[7]);
+	WRITE(gmesa->buf, TxBaseAddr8, curTex->TextureBaseAddr[8]);
+	WRITE(gmesa->buf, TxBaseAddr9, curTex->TextureBaseAddr[9]);
+	WRITE(gmesa->buf, TxBaseAddr10, curTex->TextureBaseAddr[10]);
+	WRITE(gmesa->buf, TxBaseAddr11, curTex->TextureBaseAddr[11]);
+	WRITE(gmesa->buf, TxBaseAddr12, curTex->TextureBaseAddr[12]);
+	WRITE(gmesa->buf, TextureCacheControl, (TCC_Enable | TCC_Invalidate));
+	} else {
+	CHECK_DMA_BUFFER(gmesa, 6);
+	WRITE(gmesa->buf, GeometryMode, gmesa->GeometryMode);
+	WRITE(gmesa->buf, DeltaMode, gmesa->DeltaMode);
+	WRITE(gmesa->buf, TextureAddressMode, TextureAddressModeDisable);
+	WRITE(gmesa->buf, TextureReadMode, TextureReadModeDisable);
+	WRITE(gmesa->buf, TextureFilterMode, TextureFilterModeDisable);
+	WRITE(gmesa->buf, TextureColorMode, TextureColorModeDisable);
+	}
+    }
+#ifdef DO_VALIDATE
+    PROCESS_DMA_BUFFER_TOP_HALF(gmesa);
+
+    DRM_SPINUNLOCK(&gmesa->driScreen->pSAREA->drawable_lock,
+		   gmesa->driScreen->drawLockID);
+    VALIDATE_DRAWABLE_INFO_NO_LOCK_POST(gmesa);
+
+    PROCESS_DMA_BUFFER_BOTTOM_HALF(gmesa);
+#endif
+}
+
+void gammaDDUpdateHWState( GLcontext *ctx )
+{
+   gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
+   int new_state = gmesa->new_state;
+
+   if ( new_state )
+   {
+      FLUSH_BATCH( gmesa );
+
+      gmesa->new_state = 0;
+
+      /* Update the various parts of the context's state.
+       */
+      if ( new_state & GAMMA_NEW_ALPHA )
+	 gammaUpdateAlphaMode( ctx );
+
+      if ( new_state & GAMMA_NEW_DEPTH )
+	 gammaUpdateZMode( ctx );
+
+      if ( new_state & GAMMA_NEW_FOG )
+	 gammaUpdateFogAttrib( ctx );
+
+      if ( new_state & GAMMA_NEW_CLIP )
+	 gammaUpdateClipping( ctx );
+
+      if ( new_state & GAMMA_NEW_POLYGON )
+	 gammaUpdatePolygon( ctx );
+
+      if ( new_state & GAMMA_NEW_CULL )
+	 gammaUpdateCull( ctx );
+
+      if ( new_state & GAMMA_NEW_MASKS )
+	 gammaUpdateMasks( ctx );
+
+      if ( new_state & GAMMA_NEW_WINDOW )
+	 gammaUpdateWindow( ctx );
+
+      if ( new_state & GAMMA_NEW_STIPPLE )
+	 gammaUpdateStipple( ctx );
+   }
+
+   /* HACK ! */
+
+   gammaEmitHwState( gmesa );
+}
+
+
+static void gammaDDUpdateState( GLcontext *ctx, GLuint new_state )
+{
+   _swrast_InvalidateState( ctx, new_state );
+   _swsetup_InvalidateState( ctx, new_state );
+   _ac_InvalidateState( ctx, new_state );
+   _tnl_InvalidateState( ctx, new_state );
+   GAMMA_CONTEXT(ctx)->new_gl_state |= new_state;
+}
+
+
+/* Initialize the context's hardware state.
+ */
+void gammaDDInitState( gammaContextPtr gmesa )
+{
+   gmesa->new_state = 0;
+}
+
+/* Initialize the driver's state functions.
+ */
+void gammaDDInitStateFuncs( GLcontext *ctx )
+{
+   ctx->Driver.UpdateState		= gammaDDUpdateState;
+
+   ctx->Driver.Clear			= gammaDDClear;
+   ctx->Driver.ClearIndex		= NULL;
+   ctx->Driver.ClearColor		= gammaDDClearColor;
+   ctx->Driver.DrawBuffer		= gammaDDDrawBuffer;
+   ctx->Driver.ReadBuffer		= gammaDDReadBuffer;
+
+   ctx->Driver.IndexMask		= NULL;
+   ctx->Driver.ColorMask		= gammaDDColorMask;
+
+   ctx->Driver.AlphaFunc		= gammaDDAlphaFunc;
+   ctx->Driver.BlendEquation		= gammaDDBlendEquation;
+   ctx->Driver.BlendFunc		= gammaDDBlendFunc;
+   ctx->Driver.BlendFuncSeparate	= gammaDDBlendFuncSeparate;
+   ctx->Driver.ClearDepth		= gammaDDClearDepth;
+   ctx->Driver.CullFace			= gammaDDCullFace;
+   ctx->Driver.FrontFace		= gammaDDFrontFace;
+   ctx->Driver.DepthFunc		= gammaDDDepthFunc;
+   ctx->Driver.DepthMask		= gammaDDDepthMask;
+   ctx->Driver.DepthRange		= gammaDDDepthRange;
+   ctx->Driver.Enable			= gammaDDEnable;
+   ctx->Driver.Finish			= gammaDDFinish;
+   ctx->Driver.Flush			= gammaDDFlush;
+#if 0
+   ctx->Driver.Fogfv			= gammaDDFogfv;
+#endif
+   ctx->Driver.Hint			= NULL;
+   ctx->Driver.LineWidth		= gammaDDLineWidth;
+   ctx->Driver.LineStipple		= gammaDDLineStipple;
+#if ENABLELIGHTING
+   ctx->Driver.Lightfv			= gammaDDLightfv; 
+   ctx->Driver.LightModelfv		= gammaDDLightModelfv;
+#endif
+   ctx->Driver.LogicOpcode		= gammaDDLogicalOpcode;
+   ctx->Driver.PointSize		= gammaDDPointSize;
+   ctx->Driver.PolygonMode		= gammaDDPolygonMode;
+   ctx->Driver.PolygonStipple		= gammaDDPolygonStipple;
+   ctx->Driver.Scissor			= gammaDDScissor;
+   ctx->Driver.ShadeModel		= gammaDDShadeModel;
+   ctx->Driver.ClearStencil		= NULL;
+   ctx->Driver.StencilFunc		= NULL;
+   ctx->Driver.StencilMask		= NULL;
+   ctx->Driver.StencilOp		= NULL;
+   ctx->Driver.Viewport			= gammaDDViewport;
+}