2 files changed, 467 insertions, 434 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_pstipple.c b/mesalib/src/gallium/auxiliary/util/u_pstipple.c
index 27f72e967..ac0df8c1a 100644
--- a/mesalib/src/gallium/auxiliary/util/u_pstipple.c
+++ b/mesalib/src/gallium/auxiliary/util/u_pstipple.c
@@ -1,434 +1,457 @@
-/**************************************************************************
- * 
- * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
- * Copyright 2010 VMware, Inc.
- * 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.
- * 
- **************************************************************************/
-
-/**
- * Polygon stipple helper module.  Drivers/GPUs which don't support polygon
- * stipple natively can use this module to simulate it.
- *
- * Basically, modify fragment shader to sample the 32x32 stipple pattern
- * texture and do a fragment kill for the 'off' bits.
- *
- * This was originally a 'draw' module stage, but since we don't need
- * vertex window coords or anything, it can be a stand-alone utility module.
- *
- * Authors:  Brian Paul
- */
-
-
-#include "pipe/p_context.h"
-#include "pipe/p_defines.h"
-#include "pipe/p_shader_tokens.h"
-#include "util/u_inlines.h"
-
-#include "util/u_format.h"
-#include "util/u_memory.h"
-#include "util/u_pstipple.h"
-#include "util/u_sampler.h"
-
-#include "tgsi/tgsi_transform.h"
-#include "tgsi/tgsi_dump.h"
-
-/** Approx number of new tokens for instructions in pstip_transform_inst() */
-#define NUM_NEW_TOKENS 50
-
-
-static void
-util_pstipple_update_stipple_texture(struct pipe_context *pipe,
-                                     struct pipe_resource *tex,
-                                     const uint32_t pattern[32])
-{
-   static const uint bit31 = 1 << 31;
-   struct pipe_transfer *transfer;
-   ubyte *data;
-   int i, j;
-
-   /* map texture memory */
-   transfer = pipe_get_transfer(pipe, tex, 0, 0,
-                                PIPE_TRANSFER_WRITE, 0, 0, 32, 32);
-   data = pipe->transfer_map(pipe, transfer);
-
-   /*
-    * Load alpha texture.
-    * Note: 0 means keep the fragment, 255 means kill it.
-    * We'll negate the texel value and use KILP which kills if value
-    * is negative.
-    */
-   for (i = 0; i < 32; i++) {
-      for (j = 0; j < 32; j++) {
-         if (pattern[i] & (bit31 >> j)) {
-            /* fragment "on" */
-            data[i * transfer->stride + j] = 0;
-         }
-         else {
-            /* fragment "off" */
-            data[i * transfer->stride + j] = 255;
-         }
-      }
-   }
-
-   /* unmap */
-   pipe->transfer_unmap(pipe, transfer);
-   pipe->transfer_destroy(pipe, transfer);
-}
-
-
-/**
- * Create a 32x32 alpha8 texture that encodes the given stipple pattern.
- */
-struct pipe_resource *
-util_pstipple_create_stipple_texture(struct pipe_context *pipe,
-                                     const uint32_t pattern[32])
-{
-   struct pipe_screen *screen = pipe->screen;
-   struct pipe_resource templat, *tex;
-
-   memset(&templat, 0, sizeof(templat));
-   templat.target = PIPE_TEXTURE_2D;
-   templat.format = PIPE_FORMAT_A8_UNORM;
-   templat.last_level = 0;
-   templat.width0 = 32;
-   templat.height0 = 32;
-   templat.depth0 = 1;
-   templat.array_size = 1;
-   templat.bind = PIPE_BIND_SAMPLER_VIEW;
-
-   tex = screen->resource_create(screen, &templat);
-
-   if (tex)
-      util_pstipple_update_stipple_texture(pipe, tex, pattern);
-
-   return tex;
-}
-
-
-/**
- * Create sampler view to sample the stipple texture.
- */
-struct pipe_sampler_view *
-util_pstipple_create_sampler_view(struct pipe_context *pipe,
-                                  struct pipe_resource *tex)
-{
-   struct pipe_sampler_view templat, *sv;
-
-   u_sampler_view_default_template(&templat, tex, tex->format);
-   sv = pipe->create_sampler_view(pipe, tex, &templat);
-
-   return sv;
-}
-
-
-/**
- * Create the sampler CSO that'll be used for stippling.
- */
-void *
-util_pstipple_create_sampler(struct pipe_context *pipe)
-{
-   struct pipe_sampler_state templat;
-   void *s;
-
-   memset(&templat, 0, sizeof(templat));
-   templat.wrap_s = PIPE_TEX_WRAP_REPEAT;
-   templat.wrap_t = PIPE_TEX_WRAP_REPEAT;
-   templat.wrap_r = PIPE_TEX_WRAP_REPEAT;
-   templat.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
-   templat.min_img_filter = PIPE_TEX_FILTER_NEAREST;
-   templat.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
-   templat.normalized_coords = 1;
-   templat.min_lod = 0.0f;
-   templat.max_lod = 0.0f;
-
-   s = pipe->create_sampler_state(pipe, &templat);
-   return s;
-}
-
-
-
-/**
- * Subclass of tgsi_transform_context, used for transforming the
- * user's fragment shader to add the extra texture sample and fragment kill
- * instructions.
- */
-struct pstip_transform_context {
-   struct tgsi_transform_context base;
-   uint tempsUsed;  /**< bitmask */
-   int wincoordInput;
-   int maxInput;
-   uint samplersUsed;  /**< bitfield of samplers used */
-   int freeSampler;  /** an available sampler for the pstipple */
-   int texTemp;  /**< temp registers */
-   int numImmed;
-   boolean firstInstruction;
-};
-
-
-/**
- * TGSI declaration transform callback.
- * Look for a free sampler, a free input attrib, and two free temp regs.
- */
-static void
-pstip_transform_decl(struct tgsi_transform_context *ctx,
-                     struct tgsi_full_declaration *decl)
-{
-   struct pstip_transform_context *pctx =
-      (struct pstip_transform_context *) ctx;
-
-   if (decl->Declaration.File == TGSI_FILE_SAMPLER) {
-      uint i;
-      for (i = decl->Range.First;
-           i <= decl->Range.Last; i++) {
-         pctx->samplersUsed |= 1 << i;
-      }
-   }
-   else if (decl->Declaration.File == TGSI_FILE_INPUT) {
-      pctx->maxInput = MAX2(pctx->maxInput, (int) decl->Range.Last);
-      if (decl->Semantic.Name == TGSI_SEMANTIC_POSITION)
-         pctx->wincoordInput = (int) decl->Range.First;
-   }
-   else if (decl->Declaration.File == TGSI_FILE_TEMPORARY) {
-      uint i;
-      for (i = decl->Range.First;
-           i <= decl->Range.Last; i++) {
-         pctx->tempsUsed |= (1 << i);
-      }
-   }
-
-   ctx->emit_declaration(ctx, decl);
-}
-
-
-static void
-pstip_transform_immed(struct tgsi_transform_context *ctx,
-                      struct tgsi_full_immediate *immed)
-{
-   struct pstip_transform_context *pctx =
-      (struct pstip_transform_context *) ctx;
-   pctx->numImmed++;
-}
-
-
-/**
- * Find the lowest zero bit in the given word, or -1 if bitfield is all ones.
- */
-static int
-free_bit(uint bitfield)
-{
-   return ffs(~bitfield) - 1;
-}
-
-
-/**
- * TGSI instruction transform callback.
- * Replace writes to result.color w/ a temp reg.
- * Upon END instruction, insert texture sampling code for antialiasing.
- */
-static void
-pstip_transform_inst(struct tgsi_transform_context *ctx,
-                     struct tgsi_full_instruction *inst)
-{
-   struct pstip_transform_context *pctx =
-      (struct pstip_transform_context *) ctx;
-
-   if (pctx->firstInstruction) {
-      /* emit our new declarations before the first instruction */
-
-      struct tgsi_full_declaration decl;
-      struct tgsi_full_instruction newInst;
-      uint i;
-      int wincoordInput;
-
-      /* find free sampler */
-      pctx->freeSampler = free_bit(pctx->samplersUsed);
-      if (pctx->freeSampler >= PIPE_MAX_SAMPLERS)
-         pctx->freeSampler = PIPE_MAX_SAMPLERS - 1;
-
-      if (pctx->wincoordInput < 0)
-         wincoordInput = pctx->maxInput + 1;
-      else
-         wincoordInput = pctx->wincoordInput;
-
-      /* find one free temp reg */
-      for (i = 0; i < 32; i++) {
-         if ((pctx->tempsUsed & (1 << i)) == 0) {
-            /* found a free temp */
-            if (pctx->texTemp < 0)
-               pctx->texTemp  = i;
-            else
-               break;
-         }
-      }
-      assert(pctx->texTemp >= 0);
-
-      if (pctx->wincoordInput < 0) {
-         /* declare new position input reg */
-         decl = tgsi_default_full_declaration();
-         decl.Declaration.File = TGSI_FILE_INPUT;
-         decl.Declaration.Interpolate = TGSI_INTERPOLATE_LINEAR;
-         decl.Declaration.Semantic = 1;
-         decl.Semantic.Name = TGSI_SEMANTIC_POSITION;
-         decl.Semantic.Index = 0;
-         decl.Range.First = 
-            decl.Range.Last = wincoordInput;
-         ctx->emit_declaration(ctx, &decl);
-      }
-
-      /* declare new sampler */
-      decl = tgsi_default_full_declaration();
-      decl.Declaration.File = TGSI_FILE_SAMPLER;
-      decl.Range.First = 
-      decl.Range.Last = pctx->freeSampler;
-      ctx->emit_declaration(ctx, &decl);
-
-      /* declare new temp regs */
-      decl = tgsi_default_full_declaration();
-      decl.Declaration.File = TGSI_FILE_TEMPORARY;
-      decl.Range.First = 
-      decl.Range.Last = pctx->texTemp;
-      ctx->emit_declaration(ctx, &decl);
-
-      /* emit immediate = {1/32, 1/32, 1, 1}
-       * The index/position of this immediate will be pctx->numImmed
-       */
-      {
-         static const float value[4] = { 1.0/32, 1.0/32, 1.0, 1.0 };
-         struct tgsi_full_immediate immed;
-         uint size = 4;
-         immed = tgsi_default_full_immediate();
-         immed.Immediate.NrTokens = 1 + size; /* one for the token itself */
-         immed.u[0].Float = value[0];
-         immed.u[1].Float = value[1];
-         immed.u[2].Float = value[2];
-         immed.u[3].Float = value[3];
-         ctx->emit_immediate(ctx, &immed);
-      }
-
-      pctx->firstInstruction = FALSE;
-
-
-      /* 
-       * Insert new MUL/TEX/KILP instructions at start of program
-       * Take gl_FragCoord, divide by 32 (stipple size), sample the
-       * texture and kill fragment if needed.
-       *
-       * We'd like to use non-normalized texcoords to index into a RECT
-       * texture, but we can only use REPEAT wrap mode with normalized
-       * texcoords.  Darn.
-       */
-
-      /* XXX invert wincoord if origin isn't lower-left... */
-
-      /* MUL texTemp, INPUT[wincoord], 1/32; */
-      newInst = tgsi_default_full_instruction();
-      newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
-      newInst.Instruction.NumDstRegs = 1;
-      newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
-      newInst.Dst[0].Register.Index = pctx->texTemp;
-      newInst.Instruction.NumSrcRegs = 2;
-      newInst.Src[0].Register.File = TGSI_FILE_INPUT;
-      newInst.Src[0].Register.Index = wincoordInput;
-      newInst.Src[1].Register.File = TGSI_FILE_IMMEDIATE;
-      newInst.Src[1].Register.Index = pctx->numImmed;
-      ctx->emit_instruction(ctx, &newInst);
-
-      /* TEX texTemp, texTemp, sampler; */
-      newInst = tgsi_default_full_instruction();
-      newInst.Instruction.Opcode = TGSI_OPCODE_TEX;
-      newInst.Instruction.NumDstRegs = 1;
-      newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
-      newInst.Dst[0].Register.Index = pctx->texTemp;
-      newInst.Instruction.NumSrcRegs = 2;
-      newInst.Instruction.Texture = TRUE;
-      newInst.Texture.Texture = TGSI_TEXTURE_2D;
-      newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
-      newInst.Src[0].Register.Index = pctx->texTemp;
-      newInst.Src[1].Register.File = TGSI_FILE_SAMPLER;
-      newInst.Src[1].Register.Index = pctx->freeSampler;
-      ctx->emit_instruction(ctx, &newInst);
-
-      /* KIL -texTemp;   # if -texTemp < 0, KILL fragment */
-      newInst = tgsi_default_full_instruction();
-      newInst.Instruction.Opcode = TGSI_OPCODE_KIL;
-      newInst.Instruction.NumDstRegs = 0;
-      newInst.Instruction.NumSrcRegs = 1;
-      newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
-      newInst.Src[0].Register.Index = pctx->texTemp;
-      newInst.Src[0].Register.Negate = 1;
-      ctx->emit_instruction(ctx, &newInst);
-   }
-
-   /* emit this instruction */
-   ctx->emit_instruction(ctx, inst);
-}
-
-
-/**
- * Given a fragment shader, return a new fragment shader which
- * samples a stipple texture and executes KILL.
- */
-struct pipe_shader_state *
-util_pstipple_create_fragment_shader(struct pipe_context *pipe,
-                                     struct pipe_shader_state *fs,
-                                     unsigned *samplerUnitOut)
-{
-   struct pipe_shader_state *new_fs;
-   struct pstip_transform_context transform;
-   const uint newLen = tgsi_num_tokens(fs->tokens) + NUM_NEW_TOKENS;
-
-   new_fs = MALLOC(sizeof(*new_fs));
-   if (!new_fs)
-      return NULL;
-
-   new_fs->tokens = tgsi_alloc_tokens(newLen);
-   if (!new_fs->tokens) {
-      FREE(new_fs);
-      return NULL;
-   }
-
-   memset(&transform, 0, sizeof(transform));
-   transform.wincoordInput = -1;
-   transform.maxInput = -1;
-   transform.texTemp = -1;
-   transform.firstInstruction = TRUE;
-   transform.base.transform_instruction = pstip_transform_inst;
-   transform.base.transform_declaration = pstip_transform_decl;
-   transform.base.transform_immediate = pstip_transform_immed;
-
-   tgsi_transform_shader(fs->tokens,
-                         (struct tgsi_token *) new_fs->tokens,
-                         newLen, &transform.base);
-
-#if 0 /* DEBUG */
-   tgsi_dump(fs->tokens, 0);
-   tgsi_dump(pstip_fs.tokens, 0);
-#endif
-
-   assert(transform.freeSampler < PIPE_MAX_SAMPLERS);
-   *samplerUnitOut = transform.freeSampler;
-
-   return new_fs;
-}
-
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2010 VMware, Inc.
+ * 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.
+ * 
+ **************************************************************************/
+
+/**
+ * Polygon stipple helper module.  Drivers/GPUs which don't support polygon
+ * stipple natively can use this module to simulate it.
+ *
+ * Basically, modify fragment shader to sample the 32x32 stipple pattern
+ * texture and do a fragment kill for the 'off' bits.
+ *
+ * This was originally a 'draw' module stage, but since we don't need
+ * vertex window coords or anything, it can be a stand-alone utility module.
+ *
+ * Authors:  Brian Paul
+ */
+
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
+#include "util/u_inlines.h"
+
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_pstipple.h"
+#include "util/u_sampler.h"
+
+#include "tgsi/tgsi_transform.h"
+#include "tgsi/tgsi_dump.h"
+#include "tgsi/tgsi_scan.h"
+
+/** Approx number of new tokens for instructions in pstip_transform_inst() */
+#define NUM_NEW_TOKENS 50
+
+
+static void
+util_pstipple_update_stipple_texture(struct pipe_context *pipe,
+                                     struct pipe_resource *tex,
+                                     const uint32_t pattern[32])
+{
+   static const uint bit31 = 1 << 31;
+   struct pipe_transfer *transfer;
+   ubyte *data;
+   int i, j;
+
+   /* map texture memory */
+   transfer = pipe_get_transfer(pipe, tex, 0, 0,
+                                PIPE_TRANSFER_WRITE, 0, 0, 32, 32);
+   data = pipe->transfer_map(pipe, transfer);
+
+   /*
+    * Load alpha texture.
+    * Note: 0 means keep the fragment, 255 means kill it.
+    * We'll negate the texel value and use KILP which kills if value
+    * is negative.
+    */
+   for (i = 0; i < 32; i++) {
+      for (j = 0; j < 32; j++) {
+         if (pattern[i] & (bit31 >> j)) {
+            /* fragment "on" */
+            data[i * transfer->stride + j] = 0;
+         }
+         else {
+            /* fragment "off" */
+            data[i * transfer->stride + j] = 255;
+         }
+      }
+   }
+
+   /* unmap */
+   pipe->transfer_unmap(pipe, transfer);
+   pipe->transfer_destroy(pipe, transfer);
+}
+
+
+/**
+ * Create a 32x32 alpha8 texture that encodes the given stipple pattern.
+ */
+struct pipe_resource *
+util_pstipple_create_stipple_texture(struct pipe_context *pipe,
+                                     const uint32_t pattern[32])
+{
+   struct pipe_screen *screen = pipe->screen;
+   struct pipe_resource templat, *tex;
+
+   memset(&templat, 0, sizeof(templat));
+   templat.target = PIPE_TEXTURE_2D;
+   templat.format = PIPE_FORMAT_A8_UNORM;
+   templat.last_level = 0;
+   templat.width0 = 32;
+   templat.height0 = 32;
+   templat.depth0 = 1;
+   templat.array_size = 1;
+   templat.bind = PIPE_BIND_SAMPLER_VIEW;
+
+   tex = screen->resource_create(screen, &templat);
+
+   if (tex)
+      util_pstipple_update_stipple_texture(pipe, tex, pattern);
+
+   return tex;
+}
+
+
+/**
+ * Create sampler view to sample the stipple texture.
+ */
+struct pipe_sampler_view *
+util_pstipple_create_sampler_view(struct pipe_context *pipe,
+                                  struct pipe_resource *tex)
+{
+   struct pipe_sampler_view templat, *sv;
+
+   u_sampler_view_default_template(&templat, tex, tex->format);
+   sv = pipe->create_sampler_view(pipe, tex, &templat);
+
+   return sv;
+}
+
+
+/**
+ * Create the sampler CSO that'll be used for stippling.
+ */
+void *
+util_pstipple_create_sampler(struct pipe_context *pipe)
+{
+   struct pipe_sampler_state templat;
+   void *s;
+
+   memset(&templat, 0, sizeof(templat));
+   templat.wrap_s = PIPE_TEX_WRAP_REPEAT;
+   templat.wrap_t = PIPE_TEX_WRAP_REPEAT;
+   templat.wrap_r = PIPE_TEX_WRAP_REPEAT;
+   templat.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+   templat.min_img_filter = PIPE_TEX_FILTER_NEAREST;
+   templat.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
+   templat.normalized_coords = 1;
+   templat.min_lod = 0.0f;
+   templat.max_lod = 0.0f;
+
+   s = pipe->create_sampler_state(pipe, &templat);
+   return s;
+}
+
+
+
+/**
+ * Subclass of tgsi_transform_context, used for transforming the
+ * user's fragment shader to add the extra texture sample and fragment kill
+ * instructions.
+ */
+struct pstip_transform_context {
+   struct tgsi_transform_context base;
+   struct tgsi_shader_info info;
+   uint tempsUsed;  /**< bitmask */
+   int wincoordInput;
+   int maxInput;
+   uint samplersUsed;  /**< bitfield of samplers used */
+   int freeSampler;  /** an available sampler for the pstipple */
+   int texTemp;  /**< temp registers */
+   int numImmed;
+   boolean firstInstruction;
+   uint coordOrigin;
+};
+
+
+/**
+ * TGSI declaration transform callback.
+ * Track samplers used, temps used, inputs used.
+ */
+static void
+pstip_transform_decl(struct tgsi_transform_context *ctx,
+                     struct tgsi_full_declaration *decl)
+{
+   struct pstip_transform_context *pctx =
+      (struct pstip_transform_context *) ctx;
+
+   /* XXX we can use tgsi_shader_info instead of some of this */
+
+   if (decl->Declaration.File == TGSI_FILE_SAMPLER) {
+      uint i;
+      for (i = decl->Range.First; i <= decl->Range.Last; i++) {
+         pctx->samplersUsed |= 1 << i;
+      }
+   }
+   else if (decl->Declaration.File == TGSI_FILE_INPUT) {
+      pctx->maxInput = MAX2(pctx->maxInput, (int) decl->Range.Last);
+      if (decl->Semantic.Name == TGSI_SEMANTIC_POSITION)
+         pctx->wincoordInput = (int) decl->Range.First;
+   }
+   else if (decl->Declaration.File == TGSI_FILE_TEMPORARY) {
+      uint i;
+      for (i = decl->Range.First; i <= decl->Range.Last; i++) {
+         pctx->tempsUsed |= (1 << i);
+      }
+   }
+
+   ctx->emit_declaration(ctx, decl);
+}
+
+
+static void
+pstip_transform_immed(struct tgsi_transform_context *ctx,
+                      struct tgsi_full_immediate *immed)
+{
+   struct pstip_transform_context *pctx =
+      (struct pstip_transform_context *) ctx;
+   pctx->numImmed++;
+}
+
+
+/**
+ * Find the lowest zero bit in the given word, or -1 if bitfield is all ones.
+ */
+static int
+free_bit(uint bitfield)
+{
+   return ffs(~bitfield) - 1;
+}
+
+
+/**
+ * TGSI instruction transform callback.
+ * Before the first instruction, insert our new code to sample the
+ * stipple texture (using the fragment coord register) then kill the
+ * fragment if the stipple texture bit is off.
+ *
+ * Insert:
+ *   declare new registers
+ *   MUL texTemp, INPUT[wincoord], 1/32;
+ *   TEX texTemp, texTemp, sampler;
+ *   KIL -texTemp;   # if -texTemp < 0, KILL fragment
+ *   [...original code...]
+ */
+static void
+pstip_transform_inst(struct tgsi_transform_context *ctx,
+                     struct tgsi_full_instruction *inst)
+{
+   struct pstip_transform_context *pctx =
+      (struct pstip_transform_context *) ctx;
+
+   if (pctx->firstInstruction) {
+      /* emit our new declarations before the first instruction */
+
+      struct tgsi_full_declaration decl;
+      struct tgsi_full_instruction newInst;
+      uint i;
+      int wincoordInput;
+
+      /* find free texture sampler */
+      pctx->freeSampler = free_bit(pctx->samplersUsed);
+      if (pctx->freeSampler >= PIPE_MAX_SAMPLERS)
+         pctx->freeSampler = PIPE_MAX_SAMPLERS - 1;
+
+      if (pctx->wincoordInput < 0)
+         wincoordInput = pctx->maxInput + 1;
+      else
+         wincoordInput = pctx->wincoordInput;
+
+      /* find one free temp register */
+      for (i = 0; i < 32; i++) {
+         if ((pctx->tempsUsed & (1 << i)) == 0) {
+            /* found a free temp */
+            if (pctx->texTemp < 0)
+               pctx->texTemp  = i;
+            else
+               break;
+         }
+      }
+      assert(pctx->texTemp >= 0);
+
+      if (pctx->wincoordInput < 0) {
+         /* declare new position input reg */
+         decl = tgsi_default_full_declaration();
+         decl.Declaration.File = TGSI_FILE_INPUT;
+         decl.Declaration.Interpolate = TGSI_INTERPOLATE_LINEAR;
+         decl.Declaration.Semantic = 1;
+         decl.Semantic.Name = TGSI_SEMANTIC_POSITION;
+         decl.Semantic.Index = 0;
+         decl.Range.First = 
+            decl.Range.Last = wincoordInput;
+         ctx->emit_declaration(ctx, &decl);
+      }
+
+      /* declare new sampler */
+      decl = tgsi_default_full_declaration();
+      decl.Declaration.File = TGSI_FILE_SAMPLER;
+      decl.Range.First = 
+      decl.Range.Last = pctx->freeSampler;
+      ctx->emit_declaration(ctx, &decl);
+
+      /* declare new temp regs */
+      decl = tgsi_default_full_declaration();
+      decl.Declaration.File = TGSI_FILE_TEMPORARY;
+      decl.Range.First = 
+      decl.Range.Last = pctx->texTemp;
+      ctx->emit_declaration(ctx, &decl);
+
+      /* emit immediate = {1/32, 1/32, 1, 1}
+       * The index/position of this immediate will be pctx->numImmed
+       */
+      {
+         static const float value[4] = { 1.0/32, 1.0/32, 1.0, 1.0 };
+         struct tgsi_full_immediate immed;
+         uint size = 4;
+         immed = tgsi_default_full_immediate();
+         immed.Immediate.NrTokens = 1 + size; /* one for the token itself */
+         immed.u[0].Float = value[0];
+         immed.u[1].Float = value[1];
+         immed.u[2].Float = value[2];
+         immed.u[3].Float = value[3];
+         ctx->emit_immediate(ctx, &immed);
+      }
+
+      pctx->firstInstruction = FALSE;
+
+
+      /* 
+       * Insert new MUL/TEX/KILP instructions at start of program
+       * Take gl_FragCoord, divide by 32 (stipple size), sample the
+       * texture and kill fragment if needed.
+       *
+       * We'd like to use non-normalized texcoords to index into a RECT
+       * texture, but we can only use REPEAT wrap mode with normalized
+       * texcoords.  Darn.
+       */
+
+      /* XXX invert wincoord if origin isn't lower-left... */
+
+      /* MUL texTemp, INPUT[wincoord], 1/32; */
+      newInst = tgsi_default_full_instruction();
+      newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
+      newInst.Instruction.NumDstRegs = 1;
+      newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+      newInst.Dst[0].Register.Index = pctx->texTemp;
+      newInst.Instruction.NumSrcRegs = 2;
+      newInst.Src[0].Register.File = TGSI_FILE_INPUT;
+      newInst.Src[0].Register.Index = wincoordInput;
+      newInst.Src[1].Register.File = TGSI_FILE_IMMEDIATE;
+      newInst.Src[1].Register.Index = pctx->numImmed;
+      ctx->emit_instruction(ctx, &newInst);
+
+      /* TEX texTemp, texTemp, sampler; */
+      newInst = tgsi_default_full_instruction();
+      newInst.Instruction.Opcode = TGSI_OPCODE_TEX;
+      newInst.Instruction.NumDstRegs = 1;
+      newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+      newInst.Dst[0].Register.Index = pctx->texTemp;
+      newInst.Instruction.NumSrcRegs = 2;
+      newInst.Instruction.Texture = TRUE;
+      newInst.Texture.Texture = TGSI_TEXTURE_2D;
+      newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+      newInst.Src[0].Register.Index = pctx->texTemp;
+      newInst.Src[1].Register.File = TGSI_FILE_SAMPLER;
+      newInst.Src[1].Register.Index = pctx->freeSampler;
+      ctx->emit_instruction(ctx, &newInst);
+
+      /* KIL -texTemp;   # if -texTemp < 0, KILL fragment */
+      newInst = tgsi_default_full_instruction();
+      newInst.Instruction.Opcode = TGSI_OPCODE_KIL;
+      newInst.Instruction.NumDstRegs = 0;
+      newInst.Instruction.NumSrcRegs = 1;
+      newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+      newInst.Src[0].Register.Index = pctx->texTemp;
+      newInst.Src[0].Register.Negate = 1;
+      ctx->emit_instruction(ctx, &newInst);
+   }
+
+   /* emit this instruction */
+   ctx->emit_instruction(ctx, inst);
+}
+
+
+/**
+ * Given a fragment shader, return a new fragment shader which
+ * samples a stipple texture and executes KILL.
+ */
+struct pipe_shader_state *
+util_pstipple_create_fragment_shader(struct pipe_context *pipe,
+                                     struct pipe_shader_state *fs,
+                                     unsigned *samplerUnitOut)
+{
+   struct pipe_shader_state *new_fs;
+   struct pstip_transform_context transform;
+   const uint newLen = tgsi_num_tokens(fs->tokens) + NUM_NEW_TOKENS;
+   unsigned i;
+
+   new_fs = MALLOC(sizeof(*new_fs));
+   if (!new_fs)
+      return NULL;
+
+   new_fs->tokens = tgsi_alloc_tokens(newLen);
+   if (!new_fs->tokens) {
+      FREE(new_fs);
+      return NULL;
+   }
+
+   /* Setup shader transformation info/context.
+    */
+   memset(&transform, 0, sizeof(transform));
+   transform.wincoordInput = -1;
+   transform.maxInput = -1;
+   transform.texTemp = -1;
+   transform.firstInstruction = TRUE;
+   transform.coordOrigin = TGSI_FS_COORD_ORIGIN_UPPER_LEFT;
+   transform.base.transform_instruction = pstip_transform_inst;
+   transform.base.transform_declaration = pstip_transform_decl;
+   transform.base.transform_immediate = pstip_transform_immed;
+
+   tgsi_scan_shader(fs->tokens, &transform.info);
+
+   /* find fragment coordinate origin property */
+   for (i = 0; i < transform.info.num_properties; i++) {
+      if (transform.info.properties[i].name == TGSI_PROPERTY_FS_COORD_ORIGIN)
+         transform.coordOrigin = transform.info.properties[i].data[0];
+   }
+
+   tgsi_transform_shader(fs->tokens,
+                         (struct tgsi_token *) new_fs->tokens,
+                         newLen, &transform.base);
+
+#if 0 /* DEBUG */
+   tgsi_dump(fs->tokens, 0);
+   tgsi_dump(new_fs->tokens, 0);
+#endif
+
+   assert(transform.freeSampler < PIPE_MAX_SAMPLERS);
+   *samplerUnitOut = transform.freeSampler;
+
+   return new_fs;
+}
+
diff --git a/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c b/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c
index 374fc336b..19eb689cf 100644
--- a/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c
+++ b/mesalib/src/gallium/auxiliary/util/u_vbuf_mgr.c
@@ -79,6 +79,8 @@ struct u_vbuf_mgr_priv {
    void *saved_ve, *fallback_ve;
    boolean ve_binding_lock;
 
+   unsigned saved_buffer_offset[PIPE_MAX_ATTRIBS];
+
    boolean any_user_vbs;
    boolean incompatible_vb_layout;
 };
@@ -488,6 +490,7 @@ void u_vbuf_mgr_set_vertex_buffers(struct u_vbuf_mgr *mgrb,
 
       pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer);
       pipe_resource_reference(&mgr->b.real_vertex_buffer[i], NULL);
+      mgr->saved_buffer_offset[i] = vb->buffer_offset;
 
       if (!vb->buffer) {
          continue;
@@ -647,6 +650,13 @@ u_vbuf_mgr_draw_begin(struct u_vbuf_mgr *mgrb,
 void u_vbuf_mgr_draw_end(struct u_vbuf_mgr *mgrb)
 {
    struct u_vbuf_mgr_priv *mgr = (struct u_vbuf_mgr_priv*)mgrb;
+   unsigned i;
+
+   /* buffer offsets were modified in u_vbuf_upload_buffers */
+   if (mgr->any_user_vbs) {
+      for (i = 0; i < mgr->b.nr_vertex_buffers; i++)
+         mgr->b.vertex_buffer[i].buffer_offset = mgr->saved_buffer_offset[i];
+   }
 
    if (mgr->fallback_ve) {
       u_vbuf_translate_end(mgr);