Move i915tex driver into place as just i915.

1 files changed, 1116 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/i830_state.c b/src/mesa/drivers/dri/i915/i830_state.c
new file mode 100644
index 0000000000..3c149e6905
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/i830_state.c
@@ -0,0 +1,1116 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+#include "glheader.h"
+#include "context.h"
+#include "macros.h"
+#include "enums.h"
+#include "dd.h"
+
+#include "texmem.h"
+
+#include "drivers/common/driverfuncs.h"
+
+#include "intel_screen.h"
+#include "intel_batchbuffer.h"
+#include "intel_fbo.h"
+
+#include "i830_context.h"
+#include "i830_reg.h"
+
+#define FILE_DEBUG_FLAG DEBUG_STATE
+
+static void
+i830StencilFuncSeparate(GLcontext * ctx, GLenum face, GLenum func, GLint ref,
+                        GLuint mask)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int test = intel_translate_compare_func(func);
+
+   mask = mask & 0xff;
+
+   DBG("%s : func: %s, ref : 0x%x, mask: 0x%x\n", __FUNCTION__,
+       _mesa_lookup_enum_by_nr(func), ref, mask);
+
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_TEST_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK |
+                                           STENCIL_TEST_MASK(mask));
+   i830->state.Ctx[I830_CTXREG_STENCILTST] &= ~(STENCIL_REF_VALUE_MASK |
+                                                ENABLE_STENCIL_TEST_FUNC_MASK);
+   i830->state.Ctx[I830_CTXREG_STENCILTST] |= (ENABLE_STENCIL_REF_VALUE |
+                                               ENABLE_STENCIL_TEST_FUNC |
+                                               STENCIL_REF_VALUE(ref) |
+                                               STENCIL_TEST_FUNC(test));
+}
+
+static void
+i830StencilMaskSeparate(GLcontext * ctx, GLenum face, GLuint mask)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   DBG("%s : mask 0x%x\n", __FUNCTION__, mask);
+   
+   mask = mask & 0xff;
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE4] |= (ENABLE_STENCIL_WRITE_MASK |
+                                           STENCIL_WRITE_MASK(mask));
+}
+
+static void
+i830StencilOpSeparate(GLcontext * ctx, GLenum face, GLenum fail, GLenum zfail,
+                      GLenum zpass)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int fop, dfop, dpop;
+
+   DBG("%s: fail : %s, zfail: %s, zpass : %s\n", __FUNCTION__,
+       _mesa_lookup_enum_by_nr(fail),
+       _mesa_lookup_enum_by_nr(zfail), 
+       _mesa_lookup_enum_by_nr(zpass));
+
+   fop = 0;
+   dfop = 0;
+   dpop = 0;
+
+   switch (fail) {
+   case GL_KEEP:
+      fop = STENCILOP_KEEP;
+      break;
+   case GL_ZERO:
+      fop = STENCILOP_ZERO;
+      break;
+   case GL_REPLACE:
+      fop = STENCILOP_REPLACE;
+      break;
+   case GL_INCR:
+      fop = STENCILOP_INCRSAT;
+      break;
+   case GL_DECR:
+      fop = STENCILOP_DECRSAT;
+      break;
+   case GL_INCR_WRAP:
+      fop = STENCILOP_INCR;
+      break;
+   case GL_DECR_WRAP:
+      fop = STENCILOP_DECR;
+      break;
+   case GL_INVERT:
+      fop = STENCILOP_INVERT;
+      break;
+   default:
+      break;
+   }
+   switch (zfail) {
+   case GL_KEEP:
+      dfop = STENCILOP_KEEP;
+      break;
+   case GL_ZERO:
+      dfop = STENCILOP_ZERO;
+      break;
+   case GL_REPLACE:
+      dfop = STENCILOP_REPLACE;
+      break;
+   case GL_INCR:
+      dfop = STENCILOP_INCRSAT;
+      break;
+   case GL_DECR:
+      dfop = STENCILOP_DECRSAT;
+      break;
+   case GL_INCR_WRAP:
+      dfop = STENCILOP_INCR;
+      break;
+   case GL_DECR_WRAP:
+      dfop = STENCILOP_DECR;
+      break;
+   case GL_INVERT:
+      dfop = STENCILOP_INVERT;
+      break;
+   default:
+      break;
+   }
+   switch (zpass) {
+   case GL_KEEP:
+      dpop = STENCILOP_KEEP;
+      break;
+   case GL_ZERO:
+      dpop = STENCILOP_ZERO;
+      break;
+   case GL_REPLACE:
+      dpop = STENCILOP_REPLACE;
+      break;
+   case GL_INCR:
+      dpop = STENCILOP_INCRSAT;
+      break;
+   case GL_DECR:
+      dpop = STENCILOP_DECRSAT;
+      break;
+   case GL_INCR_WRAP:
+      dpop = STENCILOP_INCR;
+      break;
+   case GL_DECR_WRAP:
+      dpop = STENCILOP_DECR;
+      break;
+   case GL_INVERT:
+      dpop = STENCILOP_INVERT;
+      break;
+   default:
+      break;
+   }
+
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STENCILTST] &= ~(STENCIL_OPS_MASK);
+   i830->state.Ctx[I830_CTXREG_STENCILTST] |= (ENABLE_STENCIL_PARMS |
+                                               STENCIL_FAIL_OP(fop) |
+                                               STENCIL_PASS_DEPTH_FAIL_OP
+                                               (dfop) |
+                                               STENCIL_PASS_DEPTH_PASS_OP
+                                               (dpop));
+}
+
+static void
+i830AlphaFunc(GLcontext * ctx, GLenum func, GLfloat ref)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int test = intel_translate_compare_func(func);
+   GLubyte refByte;
+   GLuint refInt;
+
+   UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref);
+   refInt = (GLuint) refByte;
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE2] &= ~ALPHA_TEST_REF_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE2] |= (ENABLE_ALPHA_TEST_FUNC |
+                                           ENABLE_ALPHA_REF_VALUE |
+                                           ALPHA_TEST_FUNC(test) |
+                                           ALPHA_REF_VALUE(refInt));
+}
+
+/**
+ * Makes sure that the proper enables are set for LogicOp, Independant Alpha
+ * Blend, and Blending.  It needs to be called from numerous places where we
+ * could change the LogicOp or Independant Alpha Blend without subsequent
+ * calls to glEnable.
+ * 
+ * \todo
+ * This function is substantially different from the old i830-specific driver.
+ * I'm not sure which is correct.
+ */
+static void
+i830EvalLogicOpBlendState(GLcontext * ctx)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+
+   if (RGBA_LOGICOP_ENABLED(ctx)) {
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
+                                                  ENABLE_LOGIC_OP_MASK);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (DISABLE_COLOR_BLEND |
+                                                 ENABLE_LOGIC_OP);
+   }
+   else if (ctx->Color.BlendEnabled) {
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
+                                                  ENABLE_LOGIC_OP_MASK);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (ENABLE_COLOR_BLEND |
+                                                 DISABLE_LOGIC_OP);
+   }
+   else {
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~(ENABLE_COLOR_BLEND |
+                                                  ENABLE_LOGIC_OP_MASK);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] |= (DISABLE_COLOR_BLEND |
+                                                 DISABLE_LOGIC_OP);
+   }
+}
+
+static void
+i830BlendColor(GLcontext * ctx, const GLfloat color[4])
+{
+   struct i830_context *i830 = i830_context(ctx);
+   GLubyte r, g, b, a;
+
+   DBG("%s\n", __FUNCTION__);
+   
+   UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]);
+   UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]);
+   UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]);
+   UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]);
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_BLENDCOLOR1] =
+      (a << 24) | (r << 16) | (g << 8) | b;
+}
+
+/**
+ * Sets both the blend equation (called "function" in i830 docs) and the
+ * blend function (called "factor" in i830 docs).  This is done in a single
+ * function because some blend equations (i.e., \c GL_MIN and \c GL_MAX)
+ * change the interpretation of the blend function.
+ */
+static void
+i830_set_blend_state(GLcontext * ctx)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int funcA;
+   int funcRGB;
+   int eqnA;
+   int eqnRGB;
+   int iab;
+   int s1;
+
+
+   funcRGB =
+      SRC_BLND_FACT(intel_translate_blend_factor(ctx->Color.BlendSrcRGB))
+      | DST_BLND_FACT(intel_translate_blend_factor(ctx->Color.BlendDstRGB));
+
+   switch (ctx->Color.BlendEquationRGB) {
+   case GL_FUNC_ADD:
+      eqnRGB = BLENDFUNC_ADD;
+      break;
+   case GL_MIN:
+      eqnRGB = BLENDFUNC_MIN;
+      funcRGB = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
+      break;
+   case GL_MAX:
+      eqnRGB = BLENDFUNC_MAX;
+      funcRGB = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
+      break;
+   case GL_FUNC_SUBTRACT:
+      eqnRGB = BLENDFUNC_SUB;
+      break;
+   case GL_FUNC_REVERSE_SUBTRACT:
+      eqnRGB = BLENDFUNC_RVRSE_SUB;
+      break;
+   default:
+      fprintf(stderr, "[%s:%u] Invalid RGB blend equation (0x%04x).\n",
+              __FUNCTION__, __LINE__, ctx->Color.BlendEquationRGB);
+      return;
+   }
+
+
+   funcA = SRC_ABLEND_FACT(intel_translate_blend_factor(ctx->Color.BlendSrcA))
+      | DST_ABLEND_FACT(intel_translate_blend_factor(ctx->Color.BlendDstA));
+
+   switch (ctx->Color.BlendEquationA) {
+   case GL_FUNC_ADD:
+      eqnA = BLENDFUNC_ADD;
+      break;
+   case GL_MIN:
+      eqnA = BLENDFUNC_MIN;
+      funcA = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
+      break;
+   case GL_MAX:
+      eqnA = BLENDFUNC_MAX;
+      funcA = SRC_BLND_FACT(BLENDFACT_ONE) | DST_BLND_FACT(BLENDFACT_ONE);
+      break;
+   case GL_FUNC_SUBTRACT:
+      eqnA = BLENDFUNC_SUB;
+      break;
+   case GL_FUNC_REVERSE_SUBTRACT:
+      eqnA = BLENDFUNC_RVRSE_SUB;
+      break;
+   default:
+      fprintf(stderr, "[%s:%u] Invalid alpha blend equation (0x%04x).\n",
+              __FUNCTION__, __LINE__, ctx->Color.BlendEquationA);
+      return;
+   }
+
+   iab = eqnA | funcA
+      | _3DSTATE_INDPT_ALPHA_BLEND_CMD
+      | ENABLE_SRC_ABLEND_FACTOR | ENABLE_DST_ABLEND_FACTOR
+      | ENABLE_ALPHA_BLENDFUNC;
+   s1 = eqnRGB | funcRGB
+      | _3DSTATE_MODES_1_CMD
+      | ENABLE_SRC_BLND_FACTOR | ENABLE_DST_BLND_FACTOR
+      | ENABLE_COLR_BLND_FUNC;
+
+   if ((eqnA | funcA) != (eqnRGB | funcRGB))
+      iab |= ENABLE_INDPT_ALPHA_BLEND;
+   else
+      iab |= DISABLE_INDPT_ALPHA_BLEND;
+
+   if (iab != i830->state.Ctx[I830_CTXREG_IALPHAB] ||
+       s1 != i830->state.Ctx[I830_CTXREG_STATE1]) {
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_IALPHAB] = iab;
+      i830->state.Ctx[I830_CTXREG_STATE1] = s1;
+   }
+
+   /* This will catch a logicop blend equation.  It will also ensure
+    * independant alpha blend is really in the correct state (either enabled
+    * or disabled) if blending is already enabled.
+    */
+
+   i830EvalLogicOpBlendState(ctx);
+
+   if (0) {
+      fprintf(stderr,
+              "[%s:%u] STATE1: 0x%08x IALPHAB: 0x%08x blend is %sabled\n",
+              __FUNCTION__, __LINE__, i830->state.Ctx[I830_CTXREG_STATE1],
+              i830->state.Ctx[I830_CTXREG_IALPHAB],
+              (ctx->Color.BlendEnabled) ? "en" : "dis");
+   }
+}
+
+
+static void
+i830BlendEquationSeparate(GLcontext * ctx, GLenum modeRGB, GLenum modeA)
+{
+   DBG("%s -> %s, %s\n", __FUNCTION__,
+       _mesa_lookup_enum_by_nr(modeRGB),
+       _mesa_lookup_enum_by_nr(modeA));
+
+   (void) modeRGB;
+   (void) modeA;
+   i830_set_blend_state(ctx);
+}
+
+
+static void
+i830BlendFuncSeparate(GLcontext * ctx, GLenum sfactorRGB,
+                      GLenum dfactorRGB, GLenum sfactorA, GLenum dfactorA)
+{
+   DBG("%s -> RGB(%s, %s) A(%s, %s)\n", __FUNCTION__,
+       _mesa_lookup_enum_by_nr(sfactorRGB),
+       _mesa_lookup_enum_by_nr(dfactorRGB),
+       _mesa_lookup_enum_by_nr(sfactorA),
+       _mesa_lookup_enum_by_nr(dfactorA));
+
+   (void) sfactorRGB;
+   (void) dfactorRGB;
+   (void) sfactorA;
+   (void) dfactorA;
+   i830_set_blend_state(ctx);
+}
+
+
+
+static void
+i830DepthFunc(GLcontext * ctx, GLenum func)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int test = intel_translate_compare_func(func);
+
+   DBG("%s\n", __FUNCTION__);
+   
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE3] &= ~DEPTH_TEST_FUNC_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE3] |= (ENABLE_DEPTH_TEST_FUNC |
+                                           DEPTH_TEST_FUNC(test));
+}
+
+static void
+i830DepthMask(GLcontext * ctx, GLboolean flag)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   DBG("%s flag (%d)\n", __FUNCTION__, flag);
+   
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+
+   i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_DIS_DEPTH_WRITE_MASK;
+
+   if (flag && ctx->Depth.Test)
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_DEPTH_WRITE;
+   else
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_DEPTH_WRITE;
+}
+
+/* =============================================================
+ * Polygon stipple
+ *
+ * The i830 supports a 4x4 stipple natively, GL wants 32x32.
+ * Fortunately stipple is usually a repeating pattern.
+ */
+static void
+i830PolygonStipple(GLcontext * ctx, const GLubyte * mask)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   const GLubyte *m = mask;
+   GLubyte p[4];
+   int i, j, k;
+   int active = (ctx->Polygon.StippleFlag &&
+                 i830->intel.reduced_primitive == GL_TRIANGLES);
+   GLuint newMask;
+
+   if (active) {
+      I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
+      i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
+   }
+
+   p[0] = mask[12] & 0xf;
+   p[0] |= p[0] << 4;
+   p[1] = mask[8] & 0xf;
+   p[1] |= p[1] << 4;
+   p[2] = mask[4] & 0xf;
+   p[2] |= p[2] << 4;
+   p[3] = mask[0] & 0xf;
+   p[3] |= p[3] << 4;
+
+   for (k = 0; k < 8; k++)
+      for (j = 3; j >= 0; j--)
+         for (i = 0; i < 4; i++, m++)
+            if (*m != p[j]) {
+               i830->intel.hw_stipple = 0;
+               return;
+            }
+
+   newMask = (((p[0] & 0xf) << 0) |
+              ((p[1] & 0xf) << 4) |
+              ((p[2] & 0xf) << 8) | ((p[3] & 0xf) << 12));
+
+
+   if (newMask == 0xffff || newMask == 0x0) {
+      /* this is needed to make conform pass */
+      i830->intel.hw_stipple = 0;
+      return;
+   }
+
+   i830->state.Stipple[I830_STPREG_ST1] &= ~0xffff;
+   i830->state.Stipple[I830_STPREG_ST1] |= newMask;
+   i830->intel.hw_stipple = 1;
+
+   if (active)
+      i830->state.Stipple[I830_STPREG_ST1] |= ST1_ENABLE;
+}
+
+
+/* =============================================================
+ * Hardware clipping
+ */
+static void
+i830Scissor(GLcontext * ctx, GLint x, GLint y, GLsizei w, GLsizei h)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int x1, y1, x2, y2;
+
+   if (!ctx->DrawBuffer)
+      return;
+
+   DBG("%s %d,%d %dx%d\n", __FUNCTION__, x, y, w, h);
+
+   if (ctx->DrawBuffer->Name == 0) {
+      x1 = x;
+      y1 = ctx->DrawBuffer->Height - (y + h);
+      x2 = x + w - 1;
+      y2 = y1 + h - 1;
+      DBG("%s %d..%d,%d..%d (inverted)\n", __FUNCTION__, x1, x2, y1, y2);
+   }
+   else {
+      /* FBO - not inverted
+       */
+      x1 = x;
+      y1 = y;
+      x2 = x + w - 1;
+      y2 = y + h - 1;
+      DBG("%s %d..%d,%d..%d (not inverted)\n", __FUNCTION__, x1, x2, y1, y2);
+   }
+
+   x1 = CLAMP(x1, 0, ctx->DrawBuffer->Width - 1);
+   y1 = CLAMP(y1, 0, ctx->DrawBuffer->Height - 1);
+   x2 = CLAMP(x2, 0, ctx->DrawBuffer->Width - 1);
+   y2 = CLAMP(y2, 0, ctx->DrawBuffer->Height - 1);
+   
+   DBG("%s %d..%d,%d..%d (clamped)\n", __FUNCTION__, x1, x2, y1, y2);
+
+   I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
+   i830->state.Buffer[I830_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff);
+   i830->state.Buffer[I830_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff);
+}
+
+static void
+i830LogicOp(GLcontext * ctx, GLenum opcode)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int tmp = intel_translate_logic_op(opcode);
+
+   DBG("%s\n", __FUNCTION__);
+   
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE4] &= ~LOGICOP_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp);
+}
+
+
+
+static void
+i830CullFaceFrontFace(GLcontext * ctx, GLenum unused)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   GLuint mode;
+
+   DBG("%s\n", __FUNCTION__);
+   
+   if (!ctx->Polygon.CullFlag) {
+      mode = CULLMODE_NONE;
+   }
+   else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) {
+      mode = CULLMODE_CW;
+
+      if (ctx->Polygon.CullFaceMode == GL_FRONT)
+         mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
+      if (ctx->Polygon.FrontFace != GL_CCW)
+         mode ^= (CULLMODE_CW ^ CULLMODE_CCW);
+   }
+   else {
+      mode = CULLMODE_BOTH;
+   }
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE3] &= ~CULLMODE_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE3] |= ENABLE_CULL_MODE | mode;
+}
+
+static void
+i830LineWidth(GLcontext * ctx, GLfloat widthf)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   int width;
+   int state5;
+
+   DBG("%s\n", __FUNCTION__);
+   
+   width = (int) (widthf * 2);
+   CLAMP_SELF(width, 1, 15);
+
+   state5 = i830->state.Ctx[I830_CTXREG_STATE5] & ~FIXED_LINE_WIDTH_MASK;
+   state5 |= (ENABLE_FIXED_LINE_WIDTH | FIXED_LINE_WIDTH(width));
+
+   if (state5 != i830->state.Ctx[I830_CTXREG_STATE5]) {
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_STATE5] = state5;
+   }
+}
+
+static void
+i830PointSize(GLcontext * ctx, GLfloat size)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   GLint point_size = (int) size;
+
+   DBG("%s\n", __FUNCTION__);
+   
+   CLAMP_SELF(point_size, 1, 256);
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_STATE5] &= ~FIXED_POINT_WIDTH_MASK;
+   i830->state.Ctx[I830_CTXREG_STATE5] |= (ENABLE_FIXED_POINT_WIDTH |
+                                           FIXED_POINT_WIDTH(point_size));
+}
+
+
+/* =============================================================
+ * Color masks
+ */
+
+static void
+i830ColorMask(GLcontext * ctx,
+              GLboolean r, GLboolean g, GLboolean b, GLboolean a)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   GLuint tmp = 0;
+
+   DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, a);
+
+   tmp = ((i830->state.Ctx[I830_CTXREG_ENABLES_2] & ~WRITEMASK_MASK) |
+          ENABLE_COLOR_MASK |
+          ENABLE_COLOR_WRITE |
+          ((!r) << WRITEMASK_RED_SHIFT) |
+          ((!g) << WRITEMASK_GREEN_SHIFT) |
+          ((!b) << WRITEMASK_BLUE_SHIFT) | ((!a) << WRITEMASK_ALPHA_SHIFT));
+
+   if (tmp != i830->state.Ctx[I830_CTXREG_ENABLES_2]) {
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] = tmp;
+   }
+}
+
+static void
+update_specular(GLcontext * ctx)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+   i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_SPEC_ADD_MASK;
+
+   if (NEED_SECONDARY_COLOR(ctx))
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_SPEC_ADD;
+   else
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_SPEC_ADD;
+}
+
+static void
+i830LightModelfv(GLcontext * ctx, GLenum pname, const GLfloat * param)
+{
+   DBG("%s\n", __FUNCTION__);
+   
+   if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) {
+      update_specular(ctx);
+   }
+}
+
+/* In Mesa 3.5 we can reliably do native flatshading.
+ */
+static void
+i830ShadeModel(GLcontext * ctx, GLenum mode)
+{
+   struct i830_context *i830 = i830_context(ctx);
+   I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+
+
+#define SHADE_MODE_MASK ((1<<10)|(1<<8)|(1<<6)|(1<<4))
+
+   i830->state.Ctx[I830_CTXREG_STATE3] &= ~SHADE_MODE_MASK;
+
+   if (mode == GL_FLAT) {
+      i830->state.Ctx[I830_CTXREG_STATE3] |=
+         (ALPHA_SHADE_MODE(SHADE_MODE_FLAT) | FOG_SHADE_MODE(SHADE_MODE_FLAT)
+          | SPEC_SHADE_MODE(SHADE_MODE_FLAT) |
+          COLOR_SHADE_MODE(SHADE_MODE_FLAT));
+   }
+   else {
+      i830->state.Ctx[I830_CTXREG_STATE3] |=
+         (ALPHA_SHADE_MODE(SHADE_MODE_LINEAR) |
+          FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
+          SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
+          COLOR_SHADE_MODE(SHADE_MODE_LINEAR));
+   }
+}
+
+/* =============================================================
+ * Fog
+ */
+static void
+i830Fogfv(GLcontext * ctx, GLenum pname, const GLfloat * param)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   DBG("%s\n", __FUNCTION__);
+   
+   if (pname == GL_FOG_COLOR) {
+      GLuint color = (((GLubyte) (ctx->Fog.Color[0] * 255.0F) << 16) |
+                      ((GLubyte) (ctx->Fog.Color[1] * 255.0F) << 8) |
+                      ((GLubyte) (ctx->Fog.Color[2] * 255.0F) << 0));
+
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_FOGCOLOR] =
+         (_3DSTATE_FOG_COLOR_CMD | color);
+   }
+}
+
+/* =============================================================
+ */
+
+static void
+i830Enable(GLcontext * ctx, GLenum cap, GLboolean state)
+{
+   struct i830_context *i830 = i830_context(ctx);
+
+   switch (cap) {
+   case GL_LIGHTING:
+   case GL_COLOR_SUM:
+      update_specular(ctx);
+      break;
+
+   case GL_ALPHA_TEST:
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_ALPHA_TEST_MASK;
+      if (state)
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_ALPHA_TEST;
+      else
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_ALPHA_TEST;
+
+      break;
+
+   case GL_BLEND:
+      i830EvalLogicOpBlendState(ctx);
+      break;
+
+   case GL_COLOR_LOGIC_OP:
+      i830EvalLogicOpBlendState(ctx);
+
+      /* Logicop doesn't seem to work at 16bpp:
+       */
+      if (i830->intel.intelScreen->cpp == 2)
+         FALLBACK(&i830->intel, I830_FALLBACK_LOGICOP, state);
+      break;
+
+   case GL_DITHER:
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] &= ~ENABLE_DITHER;
+
+      if (state)
+         i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_DITHER;
+      else
+         i830->state.Ctx[I830_CTXREG_ENABLES_2] |= DISABLE_DITHER;
+      break;
+
+   case GL_DEPTH_TEST:
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_DEPTH_TEST_MASK;
+
+      if (state)
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_DEPTH_TEST;
+      else
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_DEPTH_TEST;
+
+      /* Also turn off depth writes when GL_DEPTH_TEST is disabled:
+       */
+      i830DepthMask(ctx, ctx->Depth.Mask);
+      break;
+
+   case GL_SCISSOR_TEST:
+      I830_STATECHANGE(i830, I830_UPLOAD_BUFFERS);
+
+      if (state)
+         i830->state.Buffer[I830_DESTREG_SENABLE] =
+            (_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT);
+      else
+         i830->state.Buffer[I830_DESTREG_SENABLE] =
+            (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT);
+
+      break;
+
+   case GL_LINE_SMOOTH:
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+
+      i830->state.Ctx[I830_CTXREG_AA] &= ~AA_LINE_ENABLE;
+      if (state)
+         i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_ENABLE;
+      else
+         i830->state.Ctx[I830_CTXREG_AA] |= AA_LINE_DISABLE;
+      break;
+
+   case GL_FOG:
+      I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+      i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_DIS_FOG_MASK;
+      if (state)
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_FOG;
+      else
+         i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_FOG;
+      break;
+
+   case GL_CULL_FACE:
+      i830CullFaceFrontFace(ctx, 0);
+      break;
+
+   case GL_TEXTURE_2D:
+      break;
+
+   case GL_STENCIL_TEST:
+      {
+         GLboolean hw_stencil = GL_FALSE;
+         if (ctx->DrawBuffer) {
+            struct intel_renderbuffer *irbStencil
+               = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL);
+            hw_stencil = (irbStencil && irbStencil->region);
+         }
+         if (hw_stencil) {
+            I830_STATECHANGE(i830, I830_UPLOAD_CTX);
+
+            if (state) {
+               i830->state.Ctx[I830_CTXREG_ENABLES_1] |= ENABLE_STENCIL_TEST;
+               i830->state.Ctx[I830_CTXREG_ENABLES_2] |= ENABLE_STENCIL_WRITE;
+            }
+            else {
+               i830->state.Ctx[I830_CTXREG_ENABLES_1] &= ~ENABLE_STENCIL_TEST;
+               i830->state.Ctx[I830_CTXREG_ENABLES_2] &=
+                  ~ENABLE_STENCIL_WRITE;
+               i830->state.Ctx[I830_CTXREG_ENABLES_1] |= DISABLE_STENCIL_TEST;
+               i830->state.Ctx[I830_CTXREG_ENABLES_2] |=
+                  DISABLE_STENCIL_WRITE;
+            }
+         }
+         else {
+            FALLBACK(&i830->intel, I830_FALLBACK_STENCIL, state);
+         }
+      }
+      break;
+
+   case GL_POLYGON_STIPPLE:
+      /* The stipple command worked on my 855GM box, but not my 845G.
+       * I'll do more testing later to find out exactly which hardware
+       * supports it.  Disabled for now.
+       */
+      if (i830->intel.hw_stipple &&
+          i830->intel.reduced_primitive == GL_TRIANGLES) {
+         I830_STATECHANGE(i830, I830_UPLOAD_STIPPLE);
+         i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
+         if (state)
+            i830->state.Stipple[I830_STPREG_ST1] |= ST1_ENABLE;
+      }
+      break;
+
+   default:
+      ;
+   }
+}
+
+
+static void
+i830_init_packets(struct i830_context *i830)
+{
+   intelScreenPrivate *screen = i830->intel.intelScreen;
+
+   /* Zero all state */
+   memset(&i830->state, 0, sizeof(i830->state));
+
+   /* Set default blend state */
+   i830->state.TexBlend[0][0] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
+                                 TEXPIPE_COLOR |
+                                 ENABLE_TEXOUTPUT_WRT_SEL |
+                                 TEXOP_OUTPUT_CURRENT |
+                                 DISABLE_TEX_CNTRL_STAGE |
+                                 TEXOP_SCALE_1X |
+                                 TEXOP_MODIFY_PARMS |
+                                 TEXOP_LAST_STAGE | TEXBLENDOP_ARG1);
+   i830->state.TexBlend[0][1] = (_3DSTATE_MAP_BLEND_OP_CMD(0) |
+                                 TEXPIPE_ALPHA |
+                                 ENABLE_TEXOUTPUT_WRT_SEL |
+                                 TEXOP_OUTPUT_CURRENT |
+                                 TEXOP_SCALE_1X |
+                                 TEXOP_MODIFY_PARMS | TEXBLENDOP_ARG1);
+   i830->state.TexBlend[0][2] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
+                                 TEXPIPE_COLOR |
+                                 TEXBLEND_ARG1 |
+                                 TEXBLENDARG_MODIFY_PARMS |
+                                 TEXBLENDARG_DIFFUSE);
+   i830->state.TexBlend[0][3] = (_3DSTATE_MAP_BLEND_ARG_CMD(0) |
+                                 TEXPIPE_ALPHA |
+                                 TEXBLEND_ARG1 |
+                                 TEXBLENDARG_MODIFY_PARMS |
+                                 TEXBLENDARG_DIFFUSE);
+
+   i830->state.TexBlendWordsUsed[0] = 4;
+
+
+   i830->state.Ctx[I830_CTXREG_VF] = 0;
+   i830->state.Ctx[I830_CTXREG_VF2] = 0;
+
+   i830->state.Ctx[I830_CTXREG_AA] = (_3DSTATE_AA_CMD |
+                                      AA_LINE_ECAAR_WIDTH_ENABLE |
+                                      AA_LINE_ECAAR_WIDTH_1_0 |
+                                      AA_LINE_REGION_WIDTH_ENABLE |
+                                      AA_LINE_REGION_WIDTH_1_0 |
+                                      AA_LINE_DISABLE);
+
+   i830->state.Ctx[I830_CTXREG_ENABLES_1] = (_3DSTATE_ENABLES_1_CMD |
+                                             DISABLE_LOGIC_OP |
+                                             DISABLE_STENCIL_TEST |
+                                             DISABLE_DEPTH_BIAS |
+                                             DISABLE_SPEC_ADD |
+                                             DISABLE_FOG |
+                                             DISABLE_ALPHA_TEST |
+                                             DISABLE_COLOR_BLEND |
+                                             DISABLE_DEPTH_TEST);
+
+#if 000                         /* XXX all the stencil enable state is set in i830Enable(), right? */
+   if (i830->intel.hw_stencil) {
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
+                                                ENABLE_STENCIL_WRITE |
+                                                ENABLE_TEX_CACHE |
+                                                ENABLE_DITHER |
+                                                ENABLE_COLOR_MASK |
+                                                /* set no color comps disabled */
+                                                ENABLE_COLOR_WRITE |
+                                                ENABLE_DEPTH_WRITE);
+   }
+   else
+#endif
+   {
+      i830->state.Ctx[I830_CTXREG_ENABLES_2] = (_3DSTATE_ENABLES_2_CMD |
+                                                DISABLE_STENCIL_WRITE |
+                                                ENABLE_TEX_CACHE |
+                                                ENABLE_DITHER |
+                                                ENABLE_COLOR_MASK |
+                                                /* set no color comps disabled */
+                                                ENABLE_COLOR_WRITE |
+                                                ENABLE_DEPTH_WRITE);
+   }
+
+   i830->state.Ctx[I830_CTXREG_STATE1] = (_3DSTATE_MODES_1_CMD |
+                                          ENABLE_COLR_BLND_FUNC |
+                                          BLENDFUNC_ADD |
+                                          ENABLE_SRC_BLND_FACTOR |
+                                          SRC_BLND_FACT(BLENDFACT_ONE) |
+                                          ENABLE_DST_BLND_FACTOR |
+                                          DST_BLND_FACT(BLENDFACT_ZERO));
+
+   i830->state.Ctx[I830_CTXREG_STATE2] = (_3DSTATE_MODES_2_CMD |
+                                          ENABLE_GLOBAL_DEPTH_BIAS |
+                                          GLOBAL_DEPTH_BIAS(0) |
+                                          ENABLE_ALPHA_TEST_FUNC |
+                                          ALPHA_TEST_FUNC(COMPAREFUNC_ALWAYS)
+                                          | ALPHA_REF_VALUE(0));
+
+   i830->state.Ctx[I830_CTXREG_STATE3] = (_3DSTATE_MODES_3_CMD |
+                                          ENABLE_DEPTH_TEST_FUNC |
+                                          DEPTH_TEST_FUNC(COMPAREFUNC_LESS) |
+                                          ENABLE_ALPHA_SHADE_MODE |
+                                          ALPHA_SHADE_MODE(SHADE_MODE_LINEAR)
+                                          | ENABLE_FOG_SHADE_MODE |
+                                          FOG_SHADE_MODE(SHADE_MODE_LINEAR) |
+                                          ENABLE_SPEC_SHADE_MODE |
+                                          SPEC_SHADE_MODE(SHADE_MODE_LINEAR) |
+                                          ENABLE_COLOR_SHADE_MODE |
+                                          COLOR_SHADE_MODE(SHADE_MODE_LINEAR)
+                                          | ENABLE_CULL_MODE | CULLMODE_NONE);
+
+   i830->state.Ctx[I830_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD |
+                                          ENABLE_LOGIC_OP_FUNC |
+                                          LOGIC_OP_FUNC(LOGICOP_COPY) |
+                                          ENABLE_STENCIL_TEST_MASK |
+                                          STENCIL_TEST_MASK(0xff) |
+                                          ENABLE_STENCIL_WRITE_MASK |
+                                          STENCIL_WRITE_MASK(0xff));
+
+   i830->state.Ctx[I830_CTXREG_STENCILTST] = (_3DSTATE_STENCIL_TEST_CMD |
+                                              ENABLE_STENCIL_PARMS |
+                                              STENCIL_FAIL_OP(STENCILOP_KEEP)
+                                              |
+                                              STENCIL_PASS_DEPTH_FAIL_OP
+                                              (STENCILOP_KEEP) |
+                                              STENCIL_PASS_DEPTH_PASS_OP
+                                              (STENCILOP_KEEP) |
+                                              ENABLE_STENCIL_TEST_FUNC |
+                                              STENCIL_TEST_FUNC
+                                              (COMPAREFUNC_ALWAYS) |
+                                              ENABLE_STENCIL_REF_VALUE |
+                                              STENCIL_REF_VALUE(0));
+
+   i830->state.Ctx[I830_CTXREG_STATE5] = (_3DSTATE_MODES_5_CMD | FLUSH_TEXTURE_CACHE | ENABLE_SPRITE_POINT_TEX | SPRITE_POINT_TEX_OFF | ENABLE_FIXED_LINE_WIDTH | FIXED_LINE_WIDTH(0x2) |       /* 1.0 */
+                                          ENABLE_FIXED_POINT_WIDTH |
+                                          FIXED_POINT_WIDTH(1));
+
+   i830->state.Ctx[I830_CTXREG_IALPHAB] = (_3DSTATE_INDPT_ALPHA_BLEND_CMD |
+                                           DISABLE_INDPT_ALPHA_BLEND |
+                                           ENABLE_ALPHA_BLENDFUNC |
+                                           ABLENDFUNC_ADD);
+
+   i830->state.Ctx[I830_CTXREG_FOGCOLOR] = (_3DSTATE_FOG_COLOR_CMD |
+                                            FOG_COLOR_RED(0) |
+                                            FOG_COLOR_GREEN(0) |
+                                            FOG_COLOR_BLUE(0));
+
+   i830->state.Ctx[I830_CTXREG_BLENDCOLOR0] = _3DSTATE_CONST_BLEND_COLOR_CMD;
+   i830->state.Ctx[I830_CTXREG_BLENDCOLOR1] = 0;
+
+   i830->state.Ctx[I830_CTXREG_MCSB0] = _3DSTATE_MAP_COORD_SETBIND_CMD;
+   i830->state.Ctx[I830_CTXREG_MCSB1] = (TEXBIND_SET3(TEXCOORDSRC_VTXSET_3) |
+                                         TEXBIND_SET2(TEXCOORDSRC_VTXSET_2) |
+                                         TEXBIND_SET1(TEXCOORDSRC_VTXSET_1) |
+                                         TEXBIND_SET0(TEXCOORDSRC_VTXSET_0));
+
+
+   i830->state.Stipple[I830_STPREG_ST0] = _3DSTATE_STIPPLE;
+
+   i830->state.Buffer[I830_DESTREG_CBUFADDR0] = _3DSTATE_BUF_INFO_CMD;
+   i830->state.Buffer[I830_DESTREG_CBUFADDR1] = (BUF_3D_ID_COLOR_BACK | BUF_3D_PITCH(screen->front.pitch) |     /* pitch in bytes */
+                                                 BUF_3D_USE_FENCE);
+
+
+   i830->state.Buffer[I830_DESTREG_DBUFADDR0] = _3DSTATE_BUF_INFO_CMD;
+   i830->state.Buffer[I830_DESTREG_DBUFADDR1] = (BUF_3D_ID_DEPTH | BUF_3D_PITCH(screen->depth.pitch) |  /* pitch in bytes */
+                                                 BUF_3D_USE_FENCE);
+
+   i830->state.Buffer[I830_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD;
+
+#if 0
+   switch (screen->fbFormat) {
+   case DV_PF_565:
+      i830->state.Buffer[I830_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) |   /* .5 */
+                                              DSTORG_VERT_BIAS(0x8) |   /* .5 */
+                                              screen->fbFormat |
+                                              DEPTH_IS_Z |
+                                              DEPTH_FRMT_16_FIXED);
+      break;
+   case DV_PF_8888:
+      i830->state.Buffer[I830_DESTREG_DV1] = (DSTORG_HORT_BIAS(0x8) |   /* .5 */
+                                              DSTORG_VERT_BIAS(0x8) |   /* .5 */
+                                              screen->fbFormat |
+                                              DEPTH_IS_Z |
+                                              DEPTH_FRMT_24_FIXED_8_OTHER);
+      break;
+   }
+#endif
+   i830->state.Buffer[I830_DESTREG_SENABLE] = (_3DSTATE_SCISSOR_ENABLE_CMD |
+                                               DISABLE_SCISSOR_RECT);
+   i830->state.Buffer[I830_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD;
+   i830->state.Buffer[I830_DESTREG_SR1] = 0;
+   i830->state.Buffer[I830_DESTREG_SR2] = 0;
+}
+
+
+void
+i830InitStateFuncs(struct dd_function_table *functions)
+{
+   functions->AlphaFunc = i830AlphaFunc;
+   functions->BlendColor = i830BlendColor;
+   functions->BlendEquationSeparate = i830BlendEquationSeparate;
+   functions->BlendFuncSeparate = i830BlendFuncSeparate;
+   functions->ColorMask = i830ColorMask;
+   functions->CullFace = i830CullFaceFrontFace;
+   functions->DepthFunc = i830DepthFunc;
+   functions->DepthMask = i830DepthMask;
+   functions->Enable = i830Enable;
+   functions->Fogfv = i830Fogfv;
+   functions->FrontFace = i830CullFaceFrontFace;
+   functions->LightModelfv = i830LightModelfv;
+   functions->LineWidth = i830LineWidth;
+   functions->LogicOpcode = i830LogicOp;
+   functions->PointSize = i830PointSize;
+   functions->PolygonStipple = i830PolygonStipple;
+   functions->Scissor = i830Scissor;
+   functions->ShadeModel = i830ShadeModel;
+   functions->StencilFuncSeparate = i830StencilFuncSeparate;
+   functions->StencilMaskSeparate = i830StencilMaskSeparate;
+   functions->StencilOpSeparate = i830StencilOpSeparate;
+}
+
+void
+i830InitState(struct i830_context *i830)
+{
+   GLcontext *ctx = &i830->intel.ctx;
+
+   i830_init_packets(i830);
+
+   _mesa_init_driver_state(ctx);
+
+   memcpy(&i830->initial, &i830->state, sizeof(i830->state));
+
+   i830->current = &i830->state;
+   i830->state.emitted = 0;
+   i830->state.active = (I830_UPLOAD_INVARIENT |
+                         I830_UPLOAD_TEXBLEND(0) |
+                         I830_UPLOAD_STIPPLE |
+                         I830_UPLOAD_CTX | I830_UPLOAD_BUFFERS);
+}