xserver libX11 mesa git updaet 17 Mar 2011

1 files changed, 354 insertions, 354 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c b/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c
index 98be6ab75..9557adc2d 100644
--- a/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c
+++ b/mesalib/src/mesa/state_tracker/st_atom_pixeltransfer.c
@@ -1,354 +1,354 @@
-/**************************************************************************

- * 

- * Copyright 2007 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.

- * 

- **************************************************************************/

-

-/*

- * Generate fragment programs to implement pixel transfer ops, such as

- * scale/bias, colortable, convolution...

- *

- * Authors:

- *   Brian Paul

- */

-

-#include "main/imports.h"

-#include "main/image.h"

-#include "main/macros.h"

-#include "program/program.h"

-#include "program/prog_cache.h"

-#include "program/prog_instruction.h"

-#include "program/prog_parameter.h"

-#include "program/prog_print.h"

-

-#include "st_context.h"

-#include "st_format.h"

-#include "st_texture.h"

-

-#include "pipe/p_screen.h"

-#include "pipe/p_context.h"

-#include "util/u_inlines.h"

-#include "util/u_pack_color.h"

-

-

-struct state_key

-{

-   GLuint scaleAndBias:1;

-   GLuint pixelMaps:1;

-

-#if 0

-   GLfloat Maps[3][256][4];

-   int NumMaps;

-   GLint NumStages;

-   pipeline_stage Stages[STAGE_MAX];

-   GLboolean StagesUsed[STAGE_MAX];

-   GLfloat Scale1[4], Bias1[4];

-   GLfloat Scale2[4], Bias2[4];

-#endif

-};

-

-static void

-make_state_key(struct gl_context *ctx,  struct state_key *key)

-{

-   memset(key, 0, sizeof(*key));

-

-   if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 ||

-       ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 ||

-       ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 ||

-       ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) {

-      key->scaleAndBias = 1;

-   }

-

-   key->pixelMaps = ctx->Pixel.MapColorFlag;

-}

-

-

-static struct pipe_resource *

-create_color_map_texture(struct gl_context *ctx)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct pipe_resource *pt;

-   enum pipe_format format;

-   const uint texSize = 256; /* simple, and usually perfect */

-

-   /* find an RGBA texture format */

-   format = st_choose_format(pipe->screen, GL_RGBA,

-                             PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);

-

-   /* create texture for color map/table */

-   pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,

-                          texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);

-   return pt;

-}

-

-

-/**

- * Update the pixelmap texture with the contents of the R/G/B/A pixel maps.

- */

-static void

-load_color_map_texture(struct gl_context *ctx, struct pipe_resource *pt)

-{

-   struct st_context *st = st_context(ctx);

-   struct pipe_context *pipe = st->pipe;

-   struct pipe_transfer *transfer;

-   const GLuint rSize = ctx->PixelMaps.RtoR.Size;

-   const GLuint gSize = ctx->PixelMaps.GtoG.Size;

-   const GLuint bSize = ctx->PixelMaps.BtoB.Size;

-   const GLuint aSize = ctx->PixelMaps.AtoA.Size;

-   const uint texSize = pt->width0;

-   uint *dest;

-   uint i, j;

-

-   transfer = pipe_get_transfer(st_context(ctx)->pipe,

-                                pt, 0, 0, PIPE_TRANSFER_WRITE,

-                                0, 0, texSize, texSize);

-   dest = (uint *) pipe_transfer_map(pipe, transfer);

-

-   /* Pack four 1D maps into a 2D texture:

-    * R map is placed horizontally, indexed by S, in channel 0

-    * G map is placed vertically, indexed by T, in channel 1

-    * B map is placed horizontally, indexed by S, in channel 2

-    * A map is placed vertically, indexed by T, in channel 3

-    */

-   for (i = 0; i < texSize; i++) {

-      for (j = 0; j < texSize; j++) {

-         union util_color uc;

-         int k = (i * texSize + j);

-         ubyte r = ctx->PixelMaps.RtoR.Map8[j * rSize / texSize];

-         ubyte g = ctx->PixelMaps.GtoG.Map8[i * gSize / texSize];

-         ubyte b = ctx->PixelMaps.BtoB.Map8[j * bSize / texSize];

-         ubyte a = ctx->PixelMaps.AtoA.Map8[i * aSize / texSize];

-         util_pack_color_ub(r, g, b, a, pt->format, &uc);

-         *(dest + k) = uc.ui;

-      }

-   }

-

-   pipe_transfer_unmap(pipe, transfer);

-   pipe->transfer_destroy(pipe, transfer);

-}

-

-

-

-#define MAX_INST 100

-

-/**

- * Returns a fragment program which implements the current pixel transfer ops.

- */

-static struct gl_fragment_program *

-get_pixel_transfer_program(struct gl_context *ctx, const struct state_key *key)

-{

-   struct st_context *st = st_context(ctx);

-   struct prog_instruction inst[MAX_INST];

-   struct gl_program_parameter_list *params;

-   struct gl_fragment_program *fp;

-   GLuint ic = 0;

-   const GLuint colorTemp = 0;

-

-   fp = (struct gl_fragment_program *)

-      ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);

-   if (!fp)

-      return NULL;

-

-   params = _mesa_new_parameter_list();

-

-   /*

-    * Get initial pixel color from the texture.

-    * TEX colorTemp, fragment.texcoord[0], texture[0], 2D;

-    */

-   _mesa_init_instructions(inst + ic, 1);

-   inst[ic].Opcode = OPCODE_TEX;

-   inst[ic].DstReg.File = PROGRAM_TEMPORARY;

-   inst[ic].DstReg.Index = colorTemp;

-   inst[ic].SrcReg[0].File = PROGRAM_INPUT;

-   inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;

-   inst[ic].TexSrcUnit = 0;

-   inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;

-   ic++;

-   fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0);

-   fp->Base.OutputsWritten = (1 << FRAG_RESULT_COLOR);

-   fp->Base.SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */

-

-   if (key->scaleAndBias) {

-      static const gl_state_index scale_state[STATE_LENGTH] =

-         { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 };

-      static const gl_state_index bias_state[STATE_LENGTH] =

-         { STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 };

-      GLfloat scale[4], bias[4];

-      GLint scale_p, bias_p;

-

-      scale[0] = ctx->Pixel.RedScale;

-      scale[1] = ctx->Pixel.GreenScale;

-      scale[2] = ctx->Pixel.BlueScale;

-      scale[3] = ctx->Pixel.AlphaScale;

-      bias[0] = ctx->Pixel.RedBias;

-      bias[1] = ctx->Pixel.GreenBias;

-      bias[2] = ctx->Pixel.BlueBias;

-      bias[3] = ctx->Pixel.AlphaBias;

-

-      scale_p = _mesa_add_state_reference(params, scale_state);

-      bias_p = _mesa_add_state_reference(params, bias_state);

-

-      /* MAD colorTemp, colorTemp, scale, bias; */

-      _mesa_init_instructions(inst + ic, 1);

-      inst[ic].Opcode = OPCODE_MAD;

-      inst[ic].DstReg.File = PROGRAM_TEMPORARY;

-      inst[ic].DstReg.Index = colorTemp;

-      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;

-      inst[ic].SrcReg[0].Index = colorTemp;

-      inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR;

-      inst[ic].SrcReg[1].Index = scale_p;

-      inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR;

-      inst[ic].SrcReg[2].Index = bias_p;

-      ic++;

-   }

-

-   if (key->pixelMaps) {

-      const GLuint temp = 1;

-

-      /* create the colormap/texture now if not already done */

-      if (!st->pixel_xfer.pixelmap_texture) {

-         st->pixel_xfer.pixelmap_texture = create_color_map_texture(ctx);

-         st->pixel_xfer.pixelmap_sampler_view =

-            st_create_texture_sampler_view(st->pipe,

-                                           st->pixel_xfer.pixelmap_texture);

-      }

-

-      /* with a little effort, we can do four pixel map look-ups with

-       * two TEX instructions:

-       */

-

-      /* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */

-      _mesa_init_instructions(inst + ic, 1);

-      inst[ic].Opcode = OPCODE_TEX;

-      inst[ic].DstReg.File = PROGRAM_TEMPORARY;

-      inst[ic].DstReg.Index = temp;

-      inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */

-      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;

-      inst[ic].SrcReg[0].Index = colorTemp;

-      inst[ic].TexSrcUnit = 1;

-      inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;

-      ic++;

-

-      /* TEX temp.ba, colorTemp.baba, texture[1], 2D; */

-      _mesa_init_instructions(inst + ic, 1);

-      inst[ic].Opcode = OPCODE_TEX;

-      inst[ic].DstReg.File = PROGRAM_TEMPORARY;

-      inst[ic].DstReg.Index = temp;

-      inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */

-      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;

-      inst[ic].SrcReg[0].Index = colorTemp;

-      inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W,

-                                                 SWIZZLE_Z, SWIZZLE_W);

-      inst[ic].TexSrcUnit = 1;

-      inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;

-      ic++;

-

-      /* MOV colorTemp, temp; */

-      _mesa_init_instructions(inst + ic, 1);

-      inst[ic].Opcode = OPCODE_MOV;

-      inst[ic].DstReg.File = PROGRAM_TEMPORARY;

-      inst[ic].DstReg.Index = colorTemp;

-      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;

-      inst[ic].SrcReg[0].Index = temp;

-      ic++;

-

-      fp->Base.SamplersUsed |= (1 << 1);  /* sampler 1 is used */

-   }

-

-   /* Modify last instruction's dst reg to write to result.color */

-   {

-      struct prog_instruction *last = &inst[ic - 1];

-      last->DstReg.File = PROGRAM_OUTPUT;

-      last->DstReg.Index = FRAG_RESULT_COLOR;

-   }

-

-   /* END; */

-   _mesa_init_instructions(inst + ic, 1);

-   inst[ic].Opcode = OPCODE_END;

-   ic++;

-

-   assert(ic <= MAX_INST);

-

-

-   fp->Base.Instructions = _mesa_alloc_instructions(ic);

-   if (!fp->Base.Instructions) {

-      _mesa_error(ctx, GL_OUT_OF_MEMORY,

-                  "generating pixel transfer program");

-      return NULL;

-   }

-

-   _mesa_copy_instructions(fp->Base.Instructions, inst, ic);

-   fp->Base.NumInstructions = ic;

-   fp->Base.Parameters = params;

-

-#if 0

-   printf("========= pixel transfer prog\n");

-   _mesa_print_program(&fp->Base);

-   _mesa_print_parameter_list(fp->Base.Parameters);

-#endif

-

-   return fp;

-}

-

-

-

-/**

- * Update st->pixel_xfer.program in response to new pixel-transfer state.

- */

-static void

-update_pixel_transfer(struct st_context *st)

-{

-   struct gl_context *ctx = st->ctx;

-   struct state_key key;

-   struct gl_fragment_program *fp;

-

-   make_state_key(st->ctx, &key);

-

-   fp = (struct gl_fragment_program *)

-      _mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key));

-   if (!fp) {

-      fp = get_pixel_transfer_program(st->ctx, &key);

-      _mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache,

-                                 &key, sizeof(key), &fp->Base);

-   }

-

-   if (ctx->Pixel.MapColorFlag) {

-      load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture);

-   }

-   st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag;

-

-   st->pixel_xfer.program = (struct st_fragment_program *) fp;

-}

-

-

-

-const struct st_tracked_state st_update_pixel_transfer = {

-   "st_update_pixel_transfer",				/* name */

-   {							/* dirty */

-      _NEW_PIXEL,					/* mesa */

-      0,						/* st */

-   },

-   update_pixel_transfer				/* update */

-};

+/**************************************************************************
+ * 
+ * Copyright 2007 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.
+ * 
+ **************************************************************************/
+
+/*
+ * Generate fragment programs to implement pixel transfer ops, such as
+ * scale/bias, colortable, convolution...
+ *
+ * Authors:
+ *   Brian Paul
+ */
+
+#include "main/imports.h"
+#include "main/image.h"
+#include "main/macros.h"
+#include "program/program.h"
+#include "program/prog_cache.h"
+#include "program/prog_instruction.h"
+#include "program/prog_parameter.h"
+#include "program/prog_print.h"
+
+#include "st_context.h"
+#include "st_format.h"
+#include "st_texture.h"
+
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "util/u_inlines.h"
+#include "util/u_pack_color.h"
+
+
+struct state_key
+{
+   GLuint scaleAndBias:1;
+   GLuint pixelMaps:1;
+
+#if 0
+   GLfloat Maps[3][256][4];
+   int NumMaps;
+   GLint NumStages;
+   pipeline_stage Stages[STAGE_MAX];
+   GLboolean StagesUsed[STAGE_MAX];
+   GLfloat Scale1[4], Bias1[4];
+   GLfloat Scale2[4], Bias2[4];
+#endif
+};
+
+static void
+make_state_key(struct gl_context *ctx,  struct state_key *key)
+{
+   memset(key, 0, sizeof(*key));
+
+   if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 ||
+       ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 ||
+       ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 ||
+       ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) {
+      key->scaleAndBias = 1;
+   }
+
+   key->pixelMaps = ctx->Pixel.MapColorFlag;
+}
+
+
+static struct pipe_resource *
+create_color_map_texture(struct gl_context *ctx)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_resource *pt;
+   enum pipe_format format;
+   const uint texSize = 256; /* simple, and usually perfect */
+
+   /* find an RGBA texture format */
+   format = st_choose_format(pipe->screen, GL_RGBA,
+                             PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW);
+
+   /* create texture for color map/table */
+   pt = st_texture_create(st, PIPE_TEXTURE_2D, format, 0,
+                          texSize, texSize, 1, 1, PIPE_BIND_SAMPLER_VIEW);
+   return pt;
+}
+
+
+/**
+ * Update the pixelmap texture with the contents of the R/G/B/A pixel maps.
+ */
+static void
+load_color_map_texture(struct gl_context *ctx, struct pipe_resource *pt)
+{
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_transfer *transfer;
+   const GLuint rSize = ctx->PixelMaps.RtoR.Size;
+   const GLuint gSize = ctx->PixelMaps.GtoG.Size;
+   const GLuint bSize = ctx->PixelMaps.BtoB.Size;
+   const GLuint aSize = ctx->PixelMaps.AtoA.Size;
+   const uint texSize = pt->width0;
+   uint *dest;
+   uint i, j;
+
+   transfer = pipe_get_transfer(st_context(ctx)->pipe,
+                                pt, 0, 0, PIPE_TRANSFER_WRITE,
+                                0, 0, texSize, texSize);
+   dest = (uint *) pipe_transfer_map(pipe, transfer);
+
+   /* Pack four 1D maps into a 2D texture:
+    * R map is placed horizontally, indexed by S, in channel 0
+    * G map is placed vertically, indexed by T, in channel 1
+    * B map is placed horizontally, indexed by S, in channel 2
+    * A map is placed vertically, indexed by T, in channel 3
+    */
+   for (i = 0; i < texSize; i++) {
+      for (j = 0; j < texSize; j++) {
+         union util_color uc;
+         int k = (i * texSize + j);
+         ubyte r = ctx->PixelMaps.RtoR.Map8[j * rSize / texSize];
+         ubyte g = ctx->PixelMaps.GtoG.Map8[i * gSize / texSize];
+         ubyte b = ctx->PixelMaps.BtoB.Map8[j * bSize / texSize];
+         ubyte a = ctx->PixelMaps.AtoA.Map8[i * aSize / texSize];
+         util_pack_color_ub(r, g, b, a, pt->format, &uc);
+         *(dest + k) = uc.ui;
+      }
+   }
+
+   pipe_transfer_unmap(pipe, transfer);
+   pipe->transfer_destroy(pipe, transfer);
+}
+
+
+
+#define MAX_INST 100
+
+/**
+ * Returns a fragment program which implements the current pixel transfer ops.
+ */
+static struct gl_fragment_program *
+get_pixel_transfer_program(struct gl_context *ctx, const struct state_key *key)
+{
+   struct st_context *st = st_context(ctx);
+   struct prog_instruction inst[MAX_INST];
+   struct gl_program_parameter_list *params;
+   struct gl_fragment_program *fp;
+   GLuint ic = 0;
+   const GLuint colorTemp = 0;
+
+   fp = (struct gl_fragment_program *)
+      ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0);
+   if (!fp)
+      return NULL;
+
+   params = _mesa_new_parameter_list();
+
+   /*
+    * Get initial pixel color from the texture.
+    * TEX colorTemp, fragment.texcoord[0], texture[0], 2D;
+    */
+   _mesa_init_instructions(inst + ic, 1);
+   inst[ic].Opcode = OPCODE_TEX;
+   inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+   inst[ic].DstReg.Index = colorTemp;
+   inst[ic].SrcReg[0].File = PROGRAM_INPUT;
+   inst[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0;
+   inst[ic].TexSrcUnit = 0;
+   inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+   ic++;
+   fp->Base.InputsRead = (1 << FRAG_ATTRIB_TEX0);
+   fp->Base.OutputsWritten = BITFIELD64_BIT(FRAG_RESULT_COLOR);
+   fp->Base.SamplersUsed = 0x1;  /* sampler 0 (bit 0) is used */
+
+   if (key->scaleAndBias) {
+      static const gl_state_index scale_state[STATE_LENGTH] =
+         { STATE_INTERNAL, STATE_PT_SCALE, 0, 0, 0 };
+      static const gl_state_index bias_state[STATE_LENGTH] =
+         { STATE_INTERNAL, STATE_PT_BIAS, 0, 0, 0 };
+      GLfloat scale[4], bias[4];
+      GLint scale_p, bias_p;
+
+      scale[0] = ctx->Pixel.RedScale;
+      scale[1] = ctx->Pixel.GreenScale;
+      scale[2] = ctx->Pixel.BlueScale;
+      scale[3] = ctx->Pixel.AlphaScale;
+      bias[0] = ctx->Pixel.RedBias;
+      bias[1] = ctx->Pixel.GreenBias;
+      bias[2] = ctx->Pixel.BlueBias;
+      bias[3] = ctx->Pixel.AlphaBias;
+
+      scale_p = _mesa_add_state_reference(params, scale_state);
+      bias_p = _mesa_add_state_reference(params, bias_state);
+
+      /* MAD colorTemp, colorTemp, scale, bias; */
+      _mesa_init_instructions(inst + ic, 1);
+      inst[ic].Opcode = OPCODE_MAD;
+      inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+      inst[ic].DstReg.Index = colorTemp;
+      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+      inst[ic].SrcReg[0].Index = colorTemp;
+      inst[ic].SrcReg[1].File = PROGRAM_STATE_VAR;
+      inst[ic].SrcReg[1].Index = scale_p;
+      inst[ic].SrcReg[2].File = PROGRAM_STATE_VAR;
+      inst[ic].SrcReg[2].Index = bias_p;
+      ic++;
+   }
+
+   if (key->pixelMaps) {
+      const GLuint temp = 1;
+
+      /* create the colormap/texture now if not already done */
+      if (!st->pixel_xfer.pixelmap_texture) {
+         st->pixel_xfer.pixelmap_texture = create_color_map_texture(ctx);
+         st->pixel_xfer.pixelmap_sampler_view =
+            st_create_texture_sampler_view(st->pipe,
+                                           st->pixel_xfer.pixelmap_texture);
+      }
+
+      /* with a little effort, we can do four pixel map look-ups with
+       * two TEX instructions:
+       */
+
+      /* TEX temp.rg, colorTemp.rgba, texture[1], 2D; */
+      _mesa_init_instructions(inst + ic, 1);
+      inst[ic].Opcode = OPCODE_TEX;
+      inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+      inst[ic].DstReg.Index = temp;
+      inst[ic].DstReg.WriteMask = WRITEMASK_XY; /* write R,G */
+      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+      inst[ic].SrcReg[0].Index = colorTemp;
+      inst[ic].TexSrcUnit = 1;
+      inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+      ic++;
+
+      /* TEX temp.ba, colorTemp.baba, texture[1], 2D; */
+      _mesa_init_instructions(inst + ic, 1);
+      inst[ic].Opcode = OPCODE_TEX;
+      inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+      inst[ic].DstReg.Index = temp;
+      inst[ic].DstReg.WriteMask = WRITEMASK_ZW; /* write B,A */
+      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+      inst[ic].SrcReg[0].Index = colorTemp;
+      inst[ic].SrcReg[0].Swizzle = MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W,
+                                                 SWIZZLE_Z, SWIZZLE_W);
+      inst[ic].TexSrcUnit = 1;
+      inst[ic].TexSrcTarget = TEXTURE_2D_INDEX;
+      ic++;
+
+      /* MOV colorTemp, temp; */
+      _mesa_init_instructions(inst + ic, 1);
+      inst[ic].Opcode = OPCODE_MOV;
+      inst[ic].DstReg.File = PROGRAM_TEMPORARY;
+      inst[ic].DstReg.Index = colorTemp;
+      inst[ic].SrcReg[0].File = PROGRAM_TEMPORARY;
+      inst[ic].SrcReg[0].Index = temp;
+      ic++;
+
+      fp->Base.SamplersUsed |= (1 << 1);  /* sampler 1 is used */
+   }
+
+   /* Modify last instruction's dst reg to write to result.color */
+   {
+      struct prog_instruction *last = &inst[ic - 1];
+      last->DstReg.File = PROGRAM_OUTPUT;
+      last->DstReg.Index = FRAG_RESULT_COLOR;
+   }
+
+   /* END; */
+   _mesa_init_instructions(inst + ic, 1);
+   inst[ic].Opcode = OPCODE_END;
+   ic++;
+
+   assert(ic <= MAX_INST);
+
+
+   fp->Base.Instructions = _mesa_alloc_instructions(ic);
+   if (!fp->Base.Instructions) {
+      _mesa_error(ctx, GL_OUT_OF_MEMORY,
+                  "generating pixel transfer program");
+      return NULL;
+   }
+
+   _mesa_copy_instructions(fp->Base.Instructions, inst, ic);
+   fp->Base.NumInstructions = ic;
+   fp->Base.Parameters = params;
+
+#if 0
+   printf("========= pixel transfer prog\n");
+   _mesa_print_program(&fp->Base);
+   _mesa_print_parameter_list(fp->Base.Parameters);
+#endif
+
+   return fp;
+}
+
+
+
+/**
+ * Update st->pixel_xfer.program in response to new pixel-transfer state.
+ */
+static void
+update_pixel_transfer(struct st_context *st)
+{
+   struct gl_context *ctx = st->ctx;
+   struct state_key key;
+   struct gl_fragment_program *fp;
+
+   make_state_key(st->ctx, &key);
+
+   fp = (struct gl_fragment_program *)
+      _mesa_search_program_cache(st->pixel_xfer.cache, &key, sizeof(key));
+   if (!fp) {
+      fp = get_pixel_transfer_program(st->ctx, &key);
+      _mesa_program_cache_insert(st->ctx, st->pixel_xfer.cache,
+                                 &key, sizeof(key), &fp->Base);
+   }
+
+   if (ctx->Pixel.MapColorFlag) {
+      load_color_map_texture(ctx, st->pixel_xfer.pixelmap_texture);
+   }
+   st->pixel_xfer.pixelmap_enabled = ctx->Pixel.MapColorFlag;
+
+   st->pixel_xfer.program = (struct st_fragment_program *) fp;
+}
+
+
+
+const struct st_tracked_state st_update_pixel_transfer = {
+   "st_update_pixel_transfer",				/* name */
+   {							/* dirty */
+      _NEW_PIXEL,					/* mesa */
+      0,						/* st */
+   },
+   update_pixel_transfer				/* update */
+};