libX11 mesa git update 9 Feb 2011

1 files changed, 1165 insertions, 1154 deletions

diff --git a/mesalib/src/mesa/state_tracker/st_program.c b/mesalib/src/mesa/state_tracker/st_program.c
index f70e5005f..fc1dfb3ef 100644
--- a/mesalib/src/mesa/state_tracker/st_program.c
+++ b/mesalib/src/mesa/state_tracker/st_program.c
@@ -1,1154 +1,1165 @@
-/**************************************************************************

- * 

- * 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.

- * 

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

- /*

-  * Authors:

-  *   Keith Whitwell <keith@tungstengraphics.com>

-  *   Brian Paul

-  */

-

-

-#include "main/imports.h"

-#include "main/hash.h"

-#include "main/mfeatures.h"

-#include "main/mtypes.h"

-#include "program/prog_parameter.h"

-#include "program/prog_print.h"

-#include "program/programopt.h"

-

-#include "pipe/p_context.h"

-#include "pipe/p_defines.h"

-#include "pipe/p_shader_tokens.h"

-#include "draw/draw_context.h"

-#include "tgsi/tgsi_dump.h"

-#include "tgsi/tgsi_ureg.h"

-

-#include "st_debug.h"

-#include "st_cb_bitmap.h"

-#include "st_cb_drawpixels.h"

-#include "st_context.h"

-#include "st_program.h"

-#include "st_mesa_to_tgsi.h"

-#include "cso_cache/cso_context.h"

-

-

-

-/**

- * Delete a vertex program variant.  Note the caller must unlink

- * the variant from the linked list.

- */

-static void

-delete_vp_variant(struct st_context *st, struct st_vp_variant *vpv)

-{

-   if (vpv->driver_shader) 

-      cso_delete_vertex_shader(st->cso_context, vpv->driver_shader);

-      

-#if FEATURE_feedback || FEATURE_rastpos

-   if (vpv->draw_shader)

-      draw_delete_vertex_shader( st->draw, vpv->draw_shader );

-#endif

-      

-   if (vpv->tgsi.tokens)

-      st_free_tokens(vpv->tgsi.tokens);

-      

-   FREE( vpv );

-}

-

-

-

-/**

- * Clean out any old compilations:

- */

-void

-st_release_vp_variants( struct st_context *st,

-                        struct st_vertex_program *stvp )

-{

-   struct st_vp_variant *vpv;

-

-   for (vpv = stvp->variants; vpv; ) {

-      struct st_vp_variant *next = vpv->next;

-      delete_vp_variant(st, vpv);

-      vpv = next;

-   }

-

-   stvp->variants = NULL;

-}

-

-

-

-/**

- * Delete a fragment program variant.  Note the caller must unlink

- * the variant from the linked list.

- */

-static void

-delete_fp_variant(struct st_context *st, struct st_fp_variant *fpv)

-{

-   if (fpv->driver_shader) 

-      cso_delete_fragment_shader(st->cso_context, fpv->driver_shader);

-      

-   FREE(fpv);

-}

-

-

-/**

- * Free all variants of a fragment program.

- */

-void

-st_release_fp_variants(struct st_context *st, struct st_fragment_program *stfp)

-{

-   struct st_fp_variant *fpv;

-

-   for (fpv = stfp->variants; fpv; ) {

-      struct st_fp_variant *next = fpv->next;

-      delete_fp_variant(st, fpv);

-      fpv = next;

-   }

-

-   stfp->variants = NULL;

-}

-

-

-/**

- * Delete a geometry program variant.  Note the caller must unlink

- * the variant from the linked list.

- */

-static void

-delete_gp_variant(struct st_context *st, struct st_gp_variant *gpv)

-{

-   if (gpv->driver_shader) 

-      cso_delete_geometry_shader(st->cso_context, gpv->driver_shader);

-      

-   FREE(gpv);

-}

-

-

-/**

- * Free all variants of a geometry program.

- */

-void

-st_release_gp_variants(struct st_context *st, struct st_geometry_program *stgp)

-{

-   struct st_gp_variant *gpv;

-

-   for (gpv = stgp->variants; gpv; ) {

-      struct st_gp_variant *next = gpv->next;

-      delete_gp_variant(st, gpv);

-      gpv = next;

-   }

-

-   stgp->variants = NULL;

-}

-

-

-

-

-/**

- * Translate a Mesa vertex shader into a TGSI shader.

- * \param outputMapping  to map vertex program output registers (VERT_RESULT_x)

- *       to TGSI output slots

- * \param tokensOut  destination for TGSI tokens

- * \return  pointer to cached pipe_shader object.

- */

-static void

-st_prepare_vertex_program(struct st_context *st,

-                            struct st_vertex_program *stvp)

-{

-   GLuint attr;

-

-   stvp->num_inputs = 0;

-   stvp->num_outputs = 0;

-

-   if (stvp->Base.IsPositionInvariant)

-      _mesa_insert_mvp_code(st->ctx, &stvp->Base);

-

-   assert(stvp->Base.Base.NumInstructions > 1);

-

-   /*

-    * Determine number of inputs, the mappings between VERT_ATTRIB_x

-    * and TGSI generic input indexes, plus input attrib semantic info.

-    */

-   for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {

-      if (stvp->Base.Base.InputsRead & (1 << attr)) {

-         stvp->input_to_index[attr] = stvp->num_inputs;

-         stvp->index_to_input[stvp->num_inputs] = attr;

-         stvp->num_inputs++;

-      }

-   }

-   /* bit of a hack, presetup potentially unused edgeflag input */

-   stvp->input_to_index[VERT_ATTRIB_EDGEFLAG] = stvp->num_inputs;

-   stvp->index_to_input[stvp->num_inputs] = VERT_ATTRIB_EDGEFLAG;

-

-   /* Compute mapping of vertex program outputs to slots.

-    */

-   for (attr = 0; attr < VERT_RESULT_MAX; attr++) {

-      if ((stvp->Base.Base.OutputsWritten & BITFIELD64_BIT(attr)) == 0) {

-         stvp->result_to_output[attr] = ~0;

-      }

-      else {

-         unsigned slot = stvp->num_outputs++;

-

-         stvp->result_to_output[attr] = slot;

-

-         switch (attr) {

-         case VERT_RESULT_HPOS:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;

-            stvp->output_semantic_index[slot] = 0;

-            break;

-         case VERT_RESULT_COL0:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            stvp->output_semantic_index[slot] = 0;

-            break;

-         case VERT_RESULT_COL1:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            stvp->output_semantic_index[slot] = 1;

-            break;

-         case VERT_RESULT_BFC0:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;

-            stvp->output_semantic_index[slot] = 0;

-            break;

-         case VERT_RESULT_BFC1:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;

-            stvp->output_semantic_index[slot] = 1;

-            break;

-         case VERT_RESULT_FOGC:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_FOG;

-            stvp->output_semantic_index[slot] = 0;

-            break;

-         case VERT_RESULT_PSIZ:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;

-            stvp->output_semantic_index[slot] = 0;

-            break;

-         case VERT_RESULT_EDGE:

-            assert(0);

-            break;

-

-         case VERT_RESULT_TEX0:

-         case VERT_RESULT_TEX1:

-         case VERT_RESULT_TEX2:

-         case VERT_RESULT_TEX3:

-         case VERT_RESULT_TEX4:

-         case VERT_RESULT_TEX5:

-         case VERT_RESULT_TEX6:

-         case VERT_RESULT_TEX7:

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-            stvp->output_semantic_index[slot] = attr - VERT_RESULT_TEX0;

-            break;

-

-         case VERT_RESULT_VAR0:

-         default:

-            assert(attr < VERT_RESULT_MAX);

-            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-            stvp->output_semantic_index[slot] = (FRAG_ATTRIB_VAR0 - 

-                                                FRAG_ATTRIB_TEX0 +

-                                                attr - 

-                                                VERT_RESULT_VAR0);

-            break;

-         }

-      }

-   }

-   /* similar hack to above, presetup potentially unused edgeflag output */

-   stvp->result_to_output[VERT_RESULT_EDGE] = stvp->num_outputs;

-   stvp->output_semantic_name[stvp->num_outputs] = TGSI_SEMANTIC_EDGEFLAG;

-   stvp->output_semantic_index[stvp->num_outputs] = 0;

-}

-

-

-/**

- * Translate a vertex program to create a new variant.

- */

-static struct st_vp_variant *

-st_translate_vertex_program(struct st_context *st,

-                            struct st_vertex_program *stvp,

-                            const struct st_vp_variant_key *key)

-{

-   struct st_vp_variant *vpv = CALLOC_STRUCT(st_vp_variant);

-   struct pipe_context *pipe = st->pipe;

-   struct ureg_program *ureg;

-   enum pipe_error error;

-   unsigned num_outputs;

-

-   st_prepare_vertex_program( st, stvp );

-

-   _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_OUTPUT);

-   _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_VARYING);

-

-   ureg = ureg_create( TGSI_PROCESSOR_VERTEX );

-   if (ureg == NULL) {

-      FREE(vpv);

-      return NULL;

-   }

-

-   vpv->key = *key;

-

-   vpv->num_inputs = stvp->num_inputs;

-   num_outputs = stvp->num_outputs;

-   if (key->passthrough_edgeflags) {

-      vpv->num_inputs++;

-      num_outputs++;

-   }

-

-   if (ST_DEBUG & DEBUG_MESA) {

-      _mesa_print_program(&stvp->Base.Base);

-      _mesa_print_program_parameters(st->ctx, &stvp->Base.Base);

-      debug_printf("\n");

-   }

-

-   error = st_translate_mesa_program(st->ctx,

-                                     TGSI_PROCESSOR_VERTEX,

-                                     ureg,

-                                     &stvp->Base.Base,

-                                     /* inputs */

-                                     vpv->num_inputs,

-                                     stvp->input_to_index,

-                                     NULL, /* input semantic name */

-                                     NULL, /* input semantic index */

-                                     NULL,

-                                     /* outputs */

-                                     num_outputs,

-                                     stvp->result_to_output,

-                                     stvp->output_semantic_name,

-                                     stvp->output_semantic_index,

-                                     key->passthrough_edgeflags );

-

-   if (error)

-      goto fail;

-

-   vpv->tgsi.tokens = ureg_get_tokens( ureg, NULL );

-   if (!vpv->tgsi.tokens)

-      goto fail;

-

-   ureg_destroy( ureg );

-

-   vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->tgsi);

-

-   if (ST_DEBUG & DEBUG_TGSI) {

-      tgsi_dump( vpv->tgsi.tokens, 0 );

-      debug_printf("\n");

-   }

-

-   return vpv;

-

-fail:

-   debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__);

-   _mesa_print_program(&stvp->Base.Base);

-   debug_assert(0);

-

-   ureg_destroy( ureg );

-   return NULL;

-}

-

-

-/**

- * Find/create a vertex program variant.

- */

-struct st_vp_variant *

-st_get_vp_variant(struct st_context *st,

-                  struct st_vertex_program *stvp,

-                  const struct st_vp_variant_key *key)

-{

-   struct st_vp_variant *vpv;

-

-   /* Search for existing variant */

-   for (vpv = stvp->variants; vpv; vpv = vpv->next) {

-      if (memcmp(&vpv->key, key, sizeof(*key)) == 0) {

-         break;

-      }

-   }

-

-   if (!vpv) {

-      /* create now */

-      vpv = st_translate_vertex_program(st, stvp, key);

-      if (vpv) {

-         /* insert into list */

-         vpv->next = stvp->variants;

-         stvp->variants = vpv;

-      }

-   }

-

-   return vpv;

-}

-

-

-/**

- * Translate a Mesa fragment shader into a TGSI shader using extra info in

- * the key.

- * \return  new fragment program variant

- */

-static struct st_fp_variant *

-st_translate_fragment_program(struct st_context *st,

-                              struct st_fragment_program *stfp,

-                              const struct st_fp_variant_key *key)

-{

-   struct pipe_context *pipe = st->pipe;

-   struct st_fp_variant *variant = CALLOC_STRUCT(st_fp_variant);

-

-   if (!variant)

-      return NULL;

-

-   assert(!(key->bitmap && key->drawpixels));

-

-#if FEATURE_drawpix

-   if (key->bitmap) {

-      /* glBitmap drawing */

-      struct gl_fragment_program *fp;

-

-      st_make_bitmap_fragment_program(st, &stfp->Base,

-                                      &fp, &variant->bitmap_sampler);

-

-      variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);

-      stfp = st_fragment_program(fp);

-   }

-   else if (key->drawpixels) {

-      /* glDrawPixels drawing */

-      struct gl_fragment_program *fp;

-

-      if (key->drawpixels_z || key->drawpixels_stencil) {

-         fp = st_make_drawpix_z_stencil_program(st, key->drawpixels_z,

-                                                key->drawpixels_stencil);

-      }

-      else {

-         /* RGBA */

-         st_make_drawpix_fragment_program(st, &stfp->Base, &fp);

-         variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);

-      }

-      stfp = st_fragment_program(fp);

-   }

-#endif

-

-   if (!stfp->tgsi.tokens) {

-      /* need to translate Mesa instructions to TGSI now */

-      GLuint outputMapping[FRAG_RESULT_MAX];

-      GLuint inputMapping[FRAG_ATTRIB_MAX];

-      GLuint interpMode[PIPE_MAX_SHADER_INPUTS];  /* XXX size? */

-      GLuint attr;

-      enum pipe_error error;

-      const GLbitfield inputsRead = stfp->Base.Base.InputsRead;

-      struct ureg_program *ureg;

-      GLboolean write_all = GL_FALSE;

-

-      ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];

-      ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];

-      uint fs_num_inputs = 0;

-

-      ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];

-      ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];

-      uint fs_num_outputs = 0;

-

-

-      _mesa_remove_output_reads(&stfp->Base.Base, PROGRAM_OUTPUT);

-

-      /*

-       * Convert Mesa program inputs to TGSI input register semantics.

-       */

-      for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {

-         if (inputsRead & (1 << attr)) {

-            const GLuint slot = fs_num_inputs++;

-

-            inputMapping[attr] = slot;

-

-            switch (attr) {

-            case FRAG_ATTRIB_WPOS:

-               input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;

-               input_semantic_index[slot] = 0;

-               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;

-               break;

-            case FRAG_ATTRIB_COL0:

-               input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-               input_semantic_index[slot] = 0;

-               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;

-               break;

-            case FRAG_ATTRIB_COL1:

-               input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-               input_semantic_index[slot] = 1;

-               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;

-               break;

-            case FRAG_ATTRIB_FOGC:

-               input_semantic_name[slot] = TGSI_SEMANTIC_FOG;

-               input_semantic_index[slot] = 0;

-               interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;

-               break;

-            case FRAG_ATTRIB_FACE:

-               input_semantic_name[slot] = TGSI_SEMANTIC_FACE;

-               input_semantic_index[slot] = 0;

-               interpMode[slot] = TGSI_INTERPOLATE_CONSTANT;

-               break;

-               /* In most cases, there is nothing special about these

-                * inputs, so adopt a convention to use the generic

-                * semantic name and the mesa FRAG_ATTRIB_ number as the

-                * index. 

-                * 

-                * All that is required is that the vertex shader labels

-                * its own outputs similarly, and that the vertex shader

-                * generates at least every output required by the

-                * fragment shader plus fixed-function hardware (such as

-                * BFC).

-                * 

-                * There is no requirement that semantic indexes start at

-                * zero or be restricted to a particular range -- nobody

-                * should be building tables based on semantic index.

-                */

-            case FRAG_ATTRIB_PNTC:

-            case FRAG_ATTRIB_TEX0:

-            case FRAG_ATTRIB_TEX1:

-            case FRAG_ATTRIB_TEX2:

-            case FRAG_ATTRIB_TEX3:

-            case FRAG_ATTRIB_TEX4:

-            case FRAG_ATTRIB_TEX5:

-            case FRAG_ATTRIB_TEX6:

-            case FRAG_ATTRIB_TEX7:

-            case FRAG_ATTRIB_VAR0:

-            default:

-               /* Actually, let's try and zero-base this just for

-                * readability of the generated TGSI.

-                */

-               assert(attr >= FRAG_ATTRIB_TEX0);

-               input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0);

-               input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-               if (attr == FRAG_ATTRIB_PNTC)

-                  interpMode[slot] = TGSI_INTERPOLATE_LINEAR;

-               else

-                  interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;

-               break;

-            }

-         }

-         else {

-            inputMapping[attr] = -1;

-         }

-      }

-

-      /*

-       * Semantics and mapping for outputs

-       */

-      {

-         uint numColors = 0;

-         GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten;

-

-         /* if z is written, emit that first */

-         if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {

-            fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION;

-            fs_output_semantic_index[fs_num_outputs] = 0;

-            outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs;

-            fs_num_outputs++;

-            outputsWritten &= ~(1 << FRAG_RESULT_DEPTH);

-         }

-

-         if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) {

-            fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_STENCIL;

-            fs_output_semantic_index[fs_num_outputs] = 0;

-            outputMapping[FRAG_RESULT_STENCIL] = fs_num_outputs;

-            fs_num_outputs++;

-            outputsWritten &= ~(1 << FRAG_RESULT_STENCIL);

-         }

-

-         /* handle remaning outputs (color) */

-         for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {

-            if (outputsWritten & BITFIELD64_BIT(attr)) {

-               switch (attr) {

-               case FRAG_RESULT_DEPTH:

-               case FRAG_RESULT_STENCIL:

-                  /* handled above */

-                  assert(0);

-                  break;

-               case FRAG_RESULT_COLOR:

-                  write_all = GL_TRUE; /* fallthrough */

-               default:

-                  assert(attr == FRAG_RESULT_COLOR ||

-                         (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX));

-                  fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_COLOR;

-                  fs_output_semantic_index[fs_num_outputs] = numColors;

-                  outputMapping[attr] = fs_num_outputs;

-                  numColors++;

-                  break;

-               }

-

-               fs_num_outputs++;

-            }

-         }

-      }

-

-      ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );

-      if (ureg == NULL)

-         return NULL;

-

-      if (ST_DEBUG & DEBUG_MESA) {

-         _mesa_print_program(&stfp->Base.Base);

-         _mesa_print_program_parameters(st->ctx, &stfp->Base.Base);

-         debug_printf("\n");

-      }

-      if (write_all == GL_TRUE)

-         ureg_property_fs_color0_writes_all_cbufs(ureg, 1);

-

-      error = st_translate_mesa_program(st->ctx,

-                                        TGSI_PROCESSOR_FRAGMENT,

-                                        ureg,

-                                        &stfp->Base.Base,

-                                        /* inputs */

-                                        fs_num_inputs,

-                                        inputMapping,

-                                        input_semantic_name,

-                                        input_semantic_index,

-                                        interpMode,

-                                        /* outputs */

-                                        fs_num_outputs,

-                                        outputMapping,

-                                        fs_output_semantic_name,

-                                        fs_output_semantic_index, FALSE );

-

-      stfp->tgsi.tokens = ureg_get_tokens( ureg, NULL );

-      ureg_destroy( ureg );

-   }

-

-   /* fill in variant */

-   variant->driver_shader = pipe->create_fs_state(pipe, &stfp->tgsi);

-   variant->key = *key;

-

-   if (ST_DEBUG & DEBUG_TGSI) {

-      tgsi_dump( stfp->tgsi.tokens, 0/*TGSI_DUMP_VERBOSE*/ );

-      debug_printf("\n");

-   }

-

-   return variant;

-}

-

-

-/**

- * Translate fragment program if needed.

- */

-struct st_fp_variant *

-st_get_fp_variant(struct st_context *st,

-                  struct st_fragment_program *stfp,

-                  const struct st_fp_variant_key *key)

-{

-   struct st_fp_variant *fpv;

-

-   /* Search for existing variant */

-   for (fpv = stfp->variants; fpv; fpv = fpv->next) {

-      if (memcmp(&fpv->key, key, sizeof(*key)) == 0) {

-         break;

-      }

-   }

-

-   if (!fpv) {

-      /* create new */

-      fpv = st_translate_fragment_program(st, stfp, key);

-      if (fpv) {

-         /* insert into list */

-         fpv->next = stfp->variants;

-         stfp->variants = fpv;

-      }

-   }

-

-   return fpv;

-}

-

-

-/**

- * Translate a geometry program to create a new variant.

- */

-static struct st_gp_variant *

-st_translate_geometry_program(struct st_context *st,

-                              struct st_geometry_program *stgp,

-                              const struct st_gp_variant_key *key)

-{

-   GLuint inputMapping[GEOM_ATTRIB_MAX];

-   GLuint outputMapping[GEOM_RESULT_MAX];

-   struct pipe_context *pipe = st->pipe;

-   enum pipe_error error;

-   GLuint attr;

-   const GLbitfield inputsRead = stgp->Base.Base.InputsRead;

-   GLuint vslot = 0;

-   GLuint num_generic = 0;

-

-   uint gs_num_inputs = 0;

-   uint gs_builtin_inputs = 0;

-   uint gs_array_offset = 0;

-

-   ubyte gs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];

-   ubyte gs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];

-   uint gs_num_outputs = 0;

-

-   GLint i;

-   GLuint maxSlot = 0;

-   struct ureg_program *ureg;

-

-   struct st_gp_variant *gpv;

-

-   gpv = CALLOC_STRUCT(st_gp_variant);

-   if (!gpv)

-      return NULL;

-

-   _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_OUTPUT);

-   _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_VARYING);

-

-   ureg = ureg_create( TGSI_PROCESSOR_GEOMETRY );

-   if (ureg == NULL) {

-      FREE(gpv);

-      return NULL;

-   }

-

-   /* which vertex output goes to the first geometry input */

-   vslot = 0;

-

-   memset(inputMapping, 0, sizeof(inputMapping));

-   memset(outputMapping, 0, sizeof(outputMapping));

-

-   /*

-    * Convert Mesa program inputs to TGSI input register semantics.

-    */

-   for (attr = 0; attr < GEOM_ATTRIB_MAX; attr++) {

-      if (inputsRead & (1 << attr)) {

-         const GLuint slot = gs_num_inputs;

-

-         gs_num_inputs++;

-

-         inputMapping[attr] = slot;

-

-         stgp->input_map[slot + gs_array_offset] = vslot - gs_builtin_inputs;

-         stgp->input_to_index[attr] = vslot;

-         stgp->index_to_input[vslot] = attr;

-         ++vslot;

-

-         if (attr != GEOM_ATTRIB_PRIMITIVE_ID) {

-            gs_array_offset += 2;

-         } else

-            ++gs_builtin_inputs;

-

-#if 0

-         debug_printf("input map at %d = %d\n",

-                      slot + gs_array_offset, stgp->input_map[slot + gs_array_offset]);

-#endif

-

-         switch (attr) {

-         case GEOM_ATTRIB_PRIMITIVE_ID:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_PRIMID;

-            stgp->input_semantic_index[slot] = 0;

-            break;

-         case GEOM_ATTRIB_POSITION:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;

-            stgp->input_semantic_index[slot] = 0;

-            break;

-         case GEOM_ATTRIB_COLOR0:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            stgp->input_semantic_index[slot] = 0;

-            break;

-         case GEOM_ATTRIB_COLOR1:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            stgp->input_semantic_index[slot] = 1;

-            break;

-         case GEOM_ATTRIB_FOG_FRAG_COORD:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG;

-            stgp->input_semantic_index[slot] = 0;

-            break;

-         case GEOM_ATTRIB_TEX_COORD:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-            stgp->input_semantic_index[slot] = num_generic++;

-            break;

-         case GEOM_ATTRIB_VAR0:

-            /* fall-through */

-         default:

-            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-            stgp->input_semantic_index[slot] = num_generic++;

-         }

-      }

-   }

-

-   /* initialize output semantics to defaults */

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

-      gs_output_semantic_name[i] = TGSI_SEMANTIC_GENERIC;

-      gs_output_semantic_index[i] = 0;

-   }

-

-   num_generic = 0;

-   /*

-    * Determine number of outputs, the (default) output register

-    * mapping and the semantic information for each output.

-    */

-   for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {

-      if (stgp->Base.Base.OutputsWritten & (1 << attr)) {

-         GLuint slot;

-

-         slot = gs_num_outputs;

-         gs_num_outputs++;

-         outputMapping[attr] = slot;

-

-         switch (attr) {

-         case GEOM_RESULT_POS:

-            assert(slot == 0);

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;

-            gs_output_semantic_index[slot] = 0;

-            break;

-         case GEOM_RESULT_COL0:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            gs_output_semantic_index[slot] = 0;

-            break;

-         case GEOM_RESULT_COL1:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;

-            gs_output_semantic_index[slot] = 1;

-            break;

-         case GEOM_RESULT_SCOL0:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;

-            gs_output_semantic_index[slot] = 0;

-            break;

-         case GEOM_RESULT_SCOL1:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;

-            gs_output_semantic_index[slot] = 1;

-            break;

-         case GEOM_RESULT_FOGC:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_FOG;

-            gs_output_semantic_index[slot] = 0;

-            break;

-         case GEOM_RESULT_PSIZ:

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;

-            gs_output_semantic_index[slot] = 0;

-            break;

-         case GEOM_RESULT_TEX0:

-         case GEOM_RESULT_TEX1:

-         case GEOM_RESULT_TEX2:

-         case GEOM_RESULT_TEX3:

-         case GEOM_RESULT_TEX4:

-         case GEOM_RESULT_TEX5:

-         case GEOM_RESULT_TEX6:

-         case GEOM_RESULT_TEX7:

-            /* fall-through */

-         case GEOM_RESULT_VAR0:

-            /* fall-through */

-         default:

-            assert(slot < Elements(gs_output_semantic_name));

-            /* use default semantic info */

-            gs_output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;

-            gs_output_semantic_index[slot] = num_generic++;

-         }

-      }

-   }

-

-   assert(gs_output_semantic_name[0] == TGSI_SEMANTIC_POSITION);

-

-   /* find max output slot referenced to compute gs_num_outputs */

-   for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {

-      if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)

-         maxSlot = outputMapping[attr];

-   }

-   gs_num_outputs = maxSlot + 1;

-

-#if 0 /* debug */

-   {

-      GLuint i;

-      printf("outputMapping? %d\n", outputMapping ? 1 : 0);

-      if (outputMapping) {

-         printf("attr -> slot\n");

-         for (i = 0; i < 16;  i++) {

-            printf(" %2d       %3d\n", i, outputMapping[i]);

-         }

-      }

-      printf("slot    sem_name  sem_index\n");

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

-         printf(" %2d         %d         %d\n",

-                i,

-                gs_output_semantic_name[i],

-                gs_output_semantic_index[i]);

-      }

-   }

-#endif

-

-   /* free old shader state, if any */

-   if (stgp->tgsi.tokens) {

-      st_free_tokens(stgp->tgsi.tokens);

-      stgp->tgsi.tokens = NULL;

-   }

-

-   ureg_property_gs_input_prim(ureg, stgp->Base.InputType);

-   ureg_property_gs_output_prim(ureg, stgp->Base.OutputType);

-   ureg_property_gs_max_vertices(ureg, stgp->Base.VerticesOut);

-

-   error = st_translate_mesa_program(st->ctx,

-                                     TGSI_PROCESSOR_GEOMETRY,

-                                     ureg,

-                                     &stgp->Base.Base,

-                                     /* inputs */

-                                     gs_num_inputs,

-                                     inputMapping,

-                                     stgp->input_semantic_name,

-                                     stgp->input_semantic_index,

-                                     NULL,

-                                     /* outputs */

-                                     gs_num_outputs,

-                                     outputMapping,

-                                     gs_output_semantic_name,

-                                     gs_output_semantic_index,

-                                     FALSE);

-

-   stgp->num_inputs = gs_num_inputs;

-   stgp->tgsi.tokens = ureg_get_tokens( ureg, NULL );

-   ureg_destroy( ureg );

-

-   /* fill in new variant */

-   gpv->driver_shader = pipe->create_gs_state(pipe, &stgp->tgsi);

-   gpv->key = *key;

-

-   if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) {

-      _mesa_print_program(&stgp->Base.Base);

-      debug_printf("\n");

-   }

-

-   if (ST_DEBUG & DEBUG_TGSI) {

-      tgsi_dump(stgp->tgsi.tokens, 0);

-      debug_printf("\n");

-   }

-

-   return gpv;

-}

-

-

-/**

- * Get/create geometry program variant.

- */

-struct st_gp_variant *

-st_get_gp_variant(struct st_context *st,

-                  struct st_geometry_program *stgp,

-                  const struct st_gp_variant_key *key)

-{

-   struct st_gp_variant *gpv;

-

-   /* Search for existing variant */

-   for (gpv = stgp->variants; gpv; gpv = gpv->next) {

-      if (memcmp(&gpv->key, key, sizeof(*key)) == 0) {

-         break;

-      }

-   }

-

-   if (!gpv) {

-      /* create new */

-      gpv = st_translate_geometry_program(st, stgp, key);

-      if (gpv) {

-         /* insert into list */

-         gpv->next = stgp->variants;

-         stgp->variants = gpv;

-      }

-   }

-

-   return gpv;

-}

-

-

-

-

-/**

- * Debug- print current shader text

- */

-void

-st_print_shaders(struct gl_context *ctx)

-{

-   struct gl_shader_program *shProg[3] = {

-      ctx->Shader.CurrentVertexProgram,

-      ctx->Shader.CurrentGeometryProgram,

-      ctx->Shader.CurrentFragmentProgram,

-   };

-   unsigned j;

-

-   for (j = 0; j < 3; j++) {

-      unsigned i;

-

-      if (shProg[j] == NULL)

-	 continue;

-

-      for (i = 0; i < shProg[j]->NumShaders; i++) {

-	 struct gl_shader *sh;

-

-	 switch (shProg[j]->Shaders[i]->Type) {

-	 case GL_VERTEX_SHADER:

-	    sh = (i != 0) ? NULL : shProg[j]->Shaders[i];

-	    break;

-	 case GL_GEOMETRY_SHADER_ARB:

-	    sh = (i != 1) ? NULL : shProg[j]->Shaders[i];

-	    break;

-	 case GL_FRAGMENT_SHADER:

-	    sh = (i != 2) ? NULL : shProg[j]->Shaders[i];

-	    break;

-	 default:

-	    assert(0);

-	    sh = NULL;

-	    break;

-	 }

-

-	 if (sh != NULL) {

-	    printf("GLSL shader %u of %u:\n", i, shProg[j]->NumShaders);

-	    printf("%s\n", sh->Source);

-	 }

-      }

-   }

-}

-

-

-/**

- * Vert/Geom/Frag programs have per-context variants.  Free all the

- * variants attached to the given program which match the given context.

- */

-static void

-destroy_program_variants(struct st_context *st, struct gl_program *program)

-{

-   if (!program)

-      return;

-

-   switch (program->Target) {

-   case GL_VERTEX_PROGRAM_ARB:

-      {

-         struct st_vertex_program *stvp = (struct st_vertex_program *) program;

-         struct st_vp_variant *vpv, **prevPtr = &stvp->variants;

-

-         for (vpv = stvp->variants; vpv; ) {

-            struct st_vp_variant *next = vpv->next;

-            if (vpv->key.st == st) {

-               /* unlink from list */

-               *prevPtr = next;

-               /* destroy this variant */

-               delete_vp_variant(st, vpv);

-            }

-            else {

-               prevPtr = &vpv->next;

-            }

-            vpv = next;

-         }

-      }

-      break;

-   case GL_FRAGMENT_PROGRAM_ARB:

-      {

-         struct st_fragment_program *stfp =

-            (struct st_fragment_program *) program;

-         struct st_fp_variant *fpv, **prevPtr = &stfp->variants;

-

-         for (fpv = stfp->variants; fpv; ) {

-            struct st_fp_variant *next = fpv->next;

-            if (fpv->key.st == st) {

-               /* unlink from list */

-               *prevPtr = next;

-               /* destroy this variant */

-               delete_fp_variant(st, fpv);

-            }

-            else {

-               prevPtr = &fpv->next;

-            }

-            fpv = next;

-         }

-      }

-      break;

-   case MESA_GEOMETRY_PROGRAM:

-      {

-         struct st_geometry_program *stgp =

-            (struct st_geometry_program *) program;

-         struct st_gp_variant *gpv, **prevPtr = &stgp->variants;

-

-         for (gpv = stgp->variants; gpv; ) {

-            struct st_gp_variant *next = gpv->next;

-            if (gpv->key.st == st) {

-               /* unlink from list */

-               *prevPtr = next;

-               /* destroy this variant */

-               delete_gp_variant(st, gpv);

-            }

-            else {

-               prevPtr = &gpv->next;

-            }

-            gpv = next;

-         }

-      }

-      break;

-   default:

-      _mesa_problem(NULL, "Unexpected program target in "

-                    "destroy_program_variants_cb()");

-   }

-}

-

-

-/**

- * Callback for _mesa_HashWalk.  Free all the shader's program variants

- * which match the given context.

- */

-static void

-destroy_shader_program_variants_cb(GLuint key, void *data, void *userData)

-{

-   struct st_context *st = (struct st_context *) userData;

-   struct gl_shader *shader = (struct gl_shader *) data;

-

-   switch (shader->Type) {

-   case GL_SHADER_PROGRAM_MESA:

-      {

-         struct gl_shader_program *shProg = (struct gl_shader_program *) data;

-         GLuint i;

-

-         for (i = 0; i < shProg->NumShaders; i++) {

-            destroy_program_variants(st, shProg->Shaders[i]->Program);

-         }

-

-         destroy_program_variants(st, (struct gl_program *)

-                                  shProg->VertexProgram);

-         destroy_program_variants(st, (struct gl_program *)

-                                  shProg->FragmentProgram);

-         destroy_program_variants(st, (struct gl_program *)

-                                  shProg->GeometryProgram);

-      }

-      break;

-   case GL_VERTEX_SHADER:

-   case GL_FRAGMENT_SHADER:

-   case GL_GEOMETRY_SHADER:

-      {

-         destroy_program_variants(st, shader->Program);

-      }

-      break;

-   default:

-      assert(0);

-   }

-}

-

-

-/**

- * Callback for _mesa_HashWalk.  Free all the program variants which match

- * the given context.

- */

-static void

-destroy_program_variants_cb(GLuint key, void *data, void *userData)

-{

-   struct st_context *st = (struct st_context *) userData;

-   struct gl_program *program = (struct gl_program *) data;

-   destroy_program_variants(st, program);

-}

-

-

-/**

- * Walk over all shaders and programs to delete any variants which

- * belong to the given context.

- * This is called during context tear-down.

- */

-void

-st_destroy_program_variants(struct st_context *st)

-{

-   /* ARB vert/frag program */

-   _mesa_HashWalk(st->ctx->Shared->Programs,

-                  destroy_program_variants_cb, st);

-

-   /* GLSL vert/frag/geom shaders */

-   _mesa_HashWalk(st->ctx->Shared->ShaderObjects,

-                  destroy_shader_program_variants_cb, st);

-}

+/**************************************************************************
+ * 
+ * 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.
+ * 
+ **************************************************************************/
+ /*
+  * Authors:
+  *   Keith Whitwell <keith@tungstengraphics.com>
+  *   Brian Paul
+  */
+
+
+#include "main/imports.h"
+#include "main/hash.h"
+#include "main/mfeatures.h"
+#include "main/mtypes.h"
+#include "program/prog_parameter.h"
+#include "program/prog_print.h"
+#include "program/programopt.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_shader_tokens.h"
+#include "draw/draw_context.h"
+#include "tgsi/tgsi_dump.h"
+#include "tgsi/tgsi_ureg.h"
+
+#include "st_debug.h"
+#include "st_cb_bitmap.h"
+#include "st_cb_drawpixels.h"
+#include "st_context.h"
+#include "st_program.h"
+#include "st_mesa_to_tgsi.h"
+#include "cso_cache/cso_context.h"
+
+
+
+/**
+ * Delete a vertex program variant.  Note the caller must unlink
+ * the variant from the linked list.
+ */
+static void
+delete_vp_variant(struct st_context *st, struct st_vp_variant *vpv)
+{
+   if (vpv->driver_shader) 
+      cso_delete_vertex_shader(st->cso_context, vpv->driver_shader);
+      
+#if FEATURE_feedback || FEATURE_rastpos
+   if (vpv->draw_shader)
+      draw_delete_vertex_shader( st->draw, vpv->draw_shader );
+#endif
+      
+   if (vpv->tgsi.tokens)
+      st_free_tokens(vpv->tgsi.tokens);
+      
+   FREE( vpv );
+}
+
+
+
+/**
+ * Clean out any old compilations:
+ */
+void
+st_release_vp_variants( struct st_context *st,
+                        struct st_vertex_program *stvp )
+{
+   struct st_vp_variant *vpv;
+
+   for (vpv = stvp->variants; vpv; ) {
+      struct st_vp_variant *next = vpv->next;
+      delete_vp_variant(st, vpv);
+      vpv = next;
+   }
+
+   stvp->variants = NULL;
+}
+
+
+
+/**
+ * Delete a fragment program variant.  Note the caller must unlink
+ * the variant from the linked list.
+ */
+static void
+delete_fp_variant(struct st_context *st, struct st_fp_variant *fpv)
+{
+   if (fpv->driver_shader) 
+      cso_delete_fragment_shader(st->cso_context, fpv->driver_shader);
+   if (fpv->parameters)
+      _mesa_free_parameter_list(fpv->parameters);
+      
+   FREE(fpv);
+}
+
+
+/**
+ * Free all variants of a fragment program.
+ */
+void
+st_release_fp_variants(struct st_context *st, struct st_fragment_program *stfp)
+{
+   struct st_fp_variant *fpv;
+
+   for (fpv = stfp->variants; fpv; ) {
+      struct st_fp_variant *next = fpv->next;
+      delete_fp_variant(st, fpv);
+      fpv = next;
+   }
+
+   stfp->variants = NULL;
+}
+
+
+/**
+ * Delete a geometry program variant.  Note the caller must unlink
+ * the variant from the linked list.
+ */
+static void
+delete_gp_variant(struct st_context *st, struct st_gp_variant *gpv)
+{
+   if (gpv->driver_shader) 
+      cso_delete_geometry_shader(st->cso_context, gpv->driver_shader);
+      
+   FREE(gpv);
+}
+
+
+/**
+ * Free all variants of a geometry program.
+ */
+void
+st_release_gp_variants(struct st_context *st, struct st_geometry_program *stgp)
+{
+   struct st_gp_variant *gpv;
+
+   for (gpv = stgp->variants; gpv; ) {
+      struct st_gp_variant *next = gpv->next;
+      delete_gp_variant(st, gpv);
+      gpv = next;
+   }
+
+   stgp->variants = NULL;
+}
+
+
+
+
+/**
+ * Translate a Mesa vertex shader into a TGSI shader.
+ * \param outputMapping  to map vertex program output registers (VERT_RESULT_x)
+ *       to TGSI output slots
+ * \param tokensOut  destination for TGSI tokens
+ * \return  pointer to cached pipe_shader object.
+ */
+static void
+st_prepare_vertex_program(struct st_context *st,
+                            struct st_vertex_program *stvp)
+{
+   GLuint attr;
+
+   stvp->num_inputs = 0;
+   stvp->num_outputs = 0;
+
+   if (stvp->Base.IsPositionInvariant)
+      _mesa_insert_mvp_code(st->ctx, &stvp->Base);
+
+   assert(stvp->Base.Base.NumInstructions > 1);
+
+   /*
+    * Determine number of inputs, the mappings between VERT_ATTRIB_x
+    * and TGSI generic input indexes, plus input attrib semantic info.
+    */
+   for (attr = 0; attr < VERT_ATTRIB_MAX; attr++) {
+      if (stvp->Base.Base.InputsRead & (1 << attr)) {
+         stvp->input_to_index[attr] = stvp->num_inputs;
+         stvp->index_to_input[stvp->num_inputs] = attr;
+         stvp->num_inputs++;
+      }
+   }
+   /* bit of a hack, presetup potentially unused edgeflag input */
+   stvp->input_to_index[VERT_ATTRIB_EDGEFLAG] = stvp->num_inputs;
+   stvp->index_to_input[stvp->num_inputs] = VERT_ATTRIB_EDGEFLAG;
+
+   /* Compute mapping of vertex program outputs to slots.
+    */
+   for (attr = 0; attr < VERT_RESULT_MAX; attr++) {
+      if ((stvp->Base.Base.OutputsWritten & BITFIELD64_BIT(attr)) == 0) {
+         stvp->result_to_output[attr] = ~0;
+      }
+      else {
+         unsigned slot = stvp->num_outputs++;
+
+         stvp->result_to_output[attr] = slot;
+
+         switch (attr) {
+         case VERT_RESULT_HPOS:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            stvp->output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_COL0:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            stvp->output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_COL1:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            stvp->output_semantic_index[slot] = 1;
+            break;
+         case VERT_RESULT_BFC0:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            stvp->output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_BFC1:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            stvp->output_semantic_index[slot] = 1;
+            break;
+         case VERT_RESULT_FOGC:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            stvp->output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_PSIZ:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;
+            stvp->output_semantic_index[slot] = 0;
+            break;
+         case VERT_RESULT_EDGE:
+            assert(0);
+            break;
+
+         case VERT_RESULT_TEX0:
+         case VERT_RESULT_TEX1:
+         case VERT_RESULT_TEX2:
+         case VERT_RESULT_TEX3:
+         case VERT_RESULT_TEX4:
+         case VERT_RESULT_TEX5:
+         case VERT_RESULT_TEX6:
+         case VERT_RESULT_TEX7:
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            stvp->output_semantic_index[slot] = attr - VERT_RESULT_TEX0;
+            break;
+
+         case VERT_RESULT_VAR0:
+         default:
+            assert(attr < VERT_RESULT_MAX);
+            stvp->output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            stvp->output_semantic_index[slot] = (FRAG_ATTRIB_VAR0 - 
+                                                FRAG_ATTRIB_TEX0 +
+                                                attr - 
+                                                VERT_RESULT_VAR0);
+            break;
+         }
+      }
+   }
+   /* similar hack to above, presetup potentially unused edgeflag output */
+   stvp->result_to_output[VERT_RESULT_EDGE] = stvp->num_outputs;
+   stvp->output_semantic_name[stvp->num_outputs] = TGSI_SEMANTIC_EDGEFLAG;
+   stvp->output_semantic_index[stvp->num_outputs] = 0;
+}
+
+
+/**
+ * Translate a vertex program to create a new variant.
+ */
+static struct st_vp_variant *
+st_translate_vertex_program(struct st_context *st,
+                            struct st_vertex_program *stvp,
+                            const struct st_vp_variant_key *key)
+{
+   struct st_vp_variant *vpv = CALLOC_STRUCT(st_vp_variant);
+   struct pipe_context *pipe = st->pipe;
+   struct ureg_program *ureg;
+   enum pipe_error error;
+   unsigned num_outputs;
+
+   st_prepare_vertex_program( st, stvp );
+
+   _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_OUTPUT);
+   _mesa_remove_output_reads(&stvp->Base.Base, PROGRAM_VARYING);
+
+   ureg = ureg_create( TGSI_PROCESSOR_VERTEX );
+   if (ureg == NULL) {
+      FREE(vpv);
+      return NULL;
+   }
+
+   vpv->key = *key;
+
+   vpv->num_inputs = stvp->num_inputs;
+   num_outputs = stvp->num_outputs;
+   if (key->passthrough_edgeflags) {
+      vpv->num_inputs++;
+      num_outputs++;
+   }
+
+   if (ST_DEBUG & DEBUG_MESA) {
+      _mesa_print_program(&stvp->Base.Base);
+      _mesa_print_program_parameters(st->ctx, &stvp->Base.Base);
+      debug_printf("\n");
+   }
+
+   error = st_translate_mesa_program(st->ctx,
+                                     TGSI_PROCESSOR_VERTEX,
+                                     ureg,
+                                     &stvp->Base.Base,
+                                     /* inputs */
+                                     vpv->num_inputs,
+                                     stvp->input_to_index,
+                                     NULL, /* input semantic name */
+                                     NULL, /* input semantic index */
+                                     NULL,
+                                     /* outputs */
+                                     num_outputs,
+                                     stvp->result_to_output,
+                                     stvp->output_semantic_name,
+                                     stvp->output_semantic_index,
+                                     key->passthrough_edgeflags );
+
+   if (error)
+      goto fail;
+
+   vpv->tgsi.tokens = ureg_get_tokens( ureg, NULL );
+   if (!vpv->tgsi.tokens)
+      goto fail;
+
+   ureg_destroy( ureg );
+
+   vpv->driver_shader = pipe->create_vs_state(pipe, &vpv->tgsi);
+
+   if (ST_DEBUG & DEBUG_TGSI) {
+      tgsi_dump( vpv->tgsi.tokens, 0 );
+      debug_printf("\n");
+   }
+
+   return vpv;
+
+fail:
+   debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__);
+   _mesa_print_program(&stvp->Base.Base);
+   debug_assert(0);
+
+   ureg_destroy( ureg );
+   return NULL;
+}
+
+
+/**
+ * Find/create a vertex program variant.
+ */
+struct st_vp_variant *
+st_get_vp_variant(struct st_context *st,
+                  struct st_vertex_program *stvp,
+                  const struct st_vp_variant_key *key)
+{
+   struct st_vp_variant *vpv;
+
+   /* Search for existing variant */
+   for (vpv = stvp->variants; vpv; vpv = vpv->next) {
+      if (memcmp(&vpv->key, key, sizeof(*key)) == 0) {
+         break;
+      }
+   }
+
+   if (!vpv) {
+      /* create now */
+      vpv = st_translate_vertex_program(st, stvp, key);
+      if (vpv) {
+         /* insert into list */
+         vpv->next = stvp->variants;
+         stvp->variants = vpv;
+      }
+   }
+
+   return vpv;
+}
+
+
+/**
+ * Translate a Mesa fragment shader into a TGSI shader using extra info in
+ * the key.
+ * \return  new fragment program variant
+ */
+static struct st_fp_variant *
+st_translate_fragment_program(struct st_context *st,
+                              struct st_fragment_program *stfp,
+                              const struct st_fp_variant_key *key)
+{
+   struct pipe_context *pipe = st->pipe;
+   struct st_fp_variant *variant = CALLOC_STRUCT(st_fp_variant);
+   GLboolean deleteFP = GL_FALSE;
+
+   if (!variant)
+      return NULL;
+
+   assert(!(key->bitmap && key->drawpixels));
+
+#if FEATURE_drawpix
+   if (key->bitmap) {
+      /* glBitmap drawing */
+      struct gl_fragment_program *fp; /* we free this temp program below */
+
+      st_make_bitmap_fragment_program(st, &stfp->Base,
+                                      &fp, &variant->bitmap_sampler);
+
+      variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);
+      stfp = st_fragment_program(fp);
+      deleteFP = GL_TRUE;
+   }
+   else if (key->drawpixels) {
+      /* glDrawPixels drawing */
+      struct gl_fragment_program *fp; /* we free this temp program below */
+
+      if (key->drawpixels_z || key->drawpixels_stencil) {
+         fp = st_make_drawpix_z_stencil_program(st, key->drawpixels_z,
+                                                key->drawpixels_stencil);
+      }
+      else {
+         /* RGBA */
+         st_make_drawpix_fragment_program(st, &stfp->Base, &fp);
+         variant->parameters = _mesa_clone_parameter_list(fp->Base.Parameters);
+         deleteFP = GL_TRUE;
+      }
+      stfp = st_fragment_program(fp);
+   }
+#endif
+
+   if (!stfp->tgsi.tokens) {
+      /* need to translate Mesa instructions to TGSI now */
+      GLuint outputMapping[FRAG_RESULT_MAX];
+      GLuint inputMapping[FRAG_ATTRIB_MAX];
+      GLuint interpMode[PIPE_MAX_SHADER_INPUTS];  /* XXX size? */
+      GLuint attr;
+      enum pipe_error error;
+      const GLbitfield inputsRead = stfp->Base.Base.InputsRead;
+      struct ureg_program *ureg;
+      GLboolean write_all = GL_FALSE;
+
+      ubyte input_semantic_name[PIPE_MAX_SHADER_INPUTS];
+      ubyte input_semantic_index[PIPE_MAX_SHADER_INPUTS];
+      uint fs_num_inputs = 0;
+
+      ubyte fs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];
+      ubyte fs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
+      uint fs_num_outputs = 0;
+
+
+      _mesa_remove_output_reads(&stfp->Base.Base, PROGRAM_OUTPUT);
+
+      /*
+       * Convert Mesa program inputs to TGSI input register semantics.
+       */
+      for (attr = 0; attr < FRAG_ATTRIB_MAX; attr++) {
+         if (inputsRead & (1 << attr)) {
+            const GLuint slot = fs_num_inputs++;
+
+            inputMapping[attr] = slot;
+
+            switch (attr) {
+            case FRAG_ATTRIB_WPOS:
+               input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+               input_semantic_index[slot] = 0;
+               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+               break;
+            case FRAG_ATTRIB_COL0:
+               input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+               input_semantic_index[slot] = 0;
+               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+               break;
+            case FRAG_ATTRIB_COL1:
+               input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+               input_semantic_index[slot] = 1;
+               interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+               break;
+            case FRAG_ATTRIB_FOGC:
+               input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+               input_semantic_index[slot] = 0;
+               interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+               break;
+            case FRAG_ATTRIB_FACE:
+               input_semantic_name[slot] = TGSI_SEMANTIC_FACE;
+               input_semantic_index[slot] = 0;
+               interpMode[slot] = TGSI_INTERPOLATE_CONSTANT;
+               break;
+               /* In most cases, there is nothing special about these
+                * inputs, so adopt a convention to use the generic
+                * semantic name and the mesa FRAG_ATTRIB_ number as the
+                * index. 
+                * 
+                * All that is required is that the vertex shader labels
+                * its own outputs similarly, and that the vertex shader
+                * generates at least every output required by the
+                * fragment shader plus fixed-function hardware (such as
+                * BFC).
+                * 
+                * There is no requirement that semantic indexes start at
+                * zero or be restricted to a particular range -- nobody
+                * should be building tables based on semantic index.
+                */
+            case FRAG_ATTRIB_PNTC:
+            case FRAG_ATTRIB_TEX0:
+            case FRAG_ATTRIB_TEX1:
+            case FRAG_ATTRIB_TEX2:
+            case FRAG_ATTRIB_TEX3:
+            case FRAG_ATTRIB_TEX4:
+            case FRAG_ATTRIB_TEX5:
+            case FRAG_ATTRIB_TEX6:
+            case FRAG_ATTRIB_TEX7:
+            case FRAG_ATTRIB_VAR0:
+            default:
+               /* Actually, let's try and zero-base this just for
+                * readability of the generated TGSI.
+                */
+               assert(attr >= FRAG_ATTRIB_TEX0);
+               input_semantic_index[slot] = (attr - FRAG_ATTRIB_TEX0);
+               input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+               if (attr == FRAG_ATTRIB_PNTC)
+                  interpMode[slot] = TGSI_INTERPOLATE_LINEAR;
+               else
+                  interpMode[slot] = TGSI_INTERPOLATE_PERSPECTIVE;
+               break;
+            }
+         }
+         else {
+            inputMapping[attr] = -1;
+         }
+      }
+
+      /*
+       * Semantics and mapping for outputs
+       */
+      {
+         uint numColors = 0;
+         GLbitfield64 outputsWritten = stfp->Base.Base.OutputsWritten;
+
+         /* if z is written, emit that first */
+         if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH)) {
+            fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_POSITION;
+            fs_output_semantic_index[fs_num_outputs] = 0;
+            outputMapping[FRAG_RESULT_DEPTH] = fs_num_outputs;
+            fs_num_outputs++;
+            outputsWritten &= ~(1 << FRAG_RESULT_DEPTH);
+         }
+
+         if (outputsWritten & BITFIELD64_BIT(FRAG_RESULT_STENCIL)) {
+            fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_STENCIL;
+            fs_output_semantic_index[fs_num_outputs] = 0;
+            outputMapping[FRAG_RESULT_STENCIL] = fs_num_outputs;
+            fs_num_outputs++;
+            outputsWritten &= ~(1 << FRAG_RESULT_STENCIL);
+         }
+
+         /* handle remaning outputs (color) */
+         for (attr = 0; attr < FRAG_RESULT_MAX; attr++) {
+            if (outputsWritten & BITFIELD64_BIT(attr)) {
+               switch (attr) {
+               case FRAG_RESULT_DEPTH:
+               case FRAG_RESULT_STENCIL:
+                  /* handled above */
+                  assert(0);
+                  break;
+               case FRAG_RESULT_COLOR:
+                  write_all = GL_TRUE; /* fallthrough */
+               default:
+                  assert(attr == FRAG_RESULT_COLOR ||
+                         (FRAG_RESULT_DATA0 <= attr && attr < FRAG_RESULT_MAX));
+                  fs_output_semantic_name[fs_num_outputs] = TGSI_SEMANTIC_COLOR;
+                  fs_output_semantic_index[fs_num_outputs] = numColors;
+                  outputMapping[attr] = fs_num_outputs;
+                  numColors++;
+                  break;
+               }
+
+               fs_num_outputs++;
+            }
+         }
+      }
+
+      ureg = ureg_create( TGSI_PROCESSOR_FRAGMENT );
+      if (ureg == NULL)
+         return NULL;
+
+      if (ST_DEBUG & DEBUG_MESA) {
+         _mesa_print_program(&stfp->Base.Base);
+         _mesa_print_program_parameters(st->ctx, &stfp->Base.Base);
+         debug_printf("\n");
+      }
+      if (write_all == GL_TRUE)
+         ureg_property_fs_color0_writes_all_cbufs(ureg, 1);
+
+      error = st_translate_mesa_program(st->ctx,
+                                        TGSI_PROCESSOR_FRAGMENT,
+                                        ureg,
+                                        &stfp->Base.Base,
+                                        /* inputs */
+                                        fs_num_inputs,
+                                        inputMapping,
+                                        input_semantic_name,
+                                        input_semantic_index,
+                                        interpMode,
+                                        /* outputs */
+                                        fs_num_outputs,
+                                        outputMapping,
+                                        fs_output_semantic_name,
+                                        fs_output_semantic_index, FALSE );
+
+      stfp->tgsi.tokens = ureg_get_tokens( ureg, NULL );
+      ureg_destroy( ureg );
+   }
+
+   /* fill in variant */
+   variant->driver_shader = pipe->create_fs_state(pipe, &stfp->tgsi);
+   variant->key = *key;
+
+   if (ST_DEBUG & DEBUG_TGSI) {
+      tgsi_dump( stfp->tgsi.tokens, 0/*TGSI_DUMP_VERBOSE*/ );
+      debug_printf("\n");
+   }
+
+   if (deleteFP) {
+      /* Free the temporary program made above */
+      struct gl_fragment_program *fp = &stfp->Base;
+      _mesa_reference_fragprog(st->ctx, &fp, NULL);
+   }
+
+   return variant;
+}
+
+
+/**
+ * Translate fragment program if needed.
+ */
+struct st_fp_variant *
+st_get_fp_variant(struct st_context *st,
+                  struct st_fragment_program *stfp,
+                  const struct st_fp_variant_key *key)
+{
+   struct st_fp_variant *fpv;
+
+   /* Search for existing variant */
+   for (fpv = stfp->variants; fpv; fpv = fpv->next) {
+      if (memcmp(&fpv->key, key, sizeof(*key)) == 0) {
+         break;
+      }
+   }
+
+   if (!fpv) {
+      /* create new */
+      fpv = st_translate_fragment_program(st, stfp, key);
+      if (fpv) {
+         /* insert into list */
+         fpv->next = stfp->variants;
+         stfp->variants = fpv;
+      }
+   }
+
+   return fpv;
+}
+
+
+/**
+ * Translate a geometry program to create a new variant.
+ */
+static struct st_gp_variant *
+st_translate_geometry_program(struct st_context *st,
+                              struct st_geometry_program *stgp,
+                              const struct st_gp_variant_key *key)
+{
+   GLuint inputMapping[GEOM_ATTRIB_MAX];
+   GLuint outputMapping[GEOM_RESULT_MAX];
+   struct pipe_context *pipe = st->pipe;
+   enum pipe_error error;
+   GLuint attr;
+   const GLbitfield inputsRead = stgp->Base.Base.InputsRead;
+   GLuint vslot = 0;
+   GLuint num_generic = 0;
+
+   uint gs_num_inputs = 0;
+   uint gs_builtin_inputs = 0;
+   uint gs_array_offset = 0;
+
+   ubyte gs_output_semantic_name[PIPE_MAX_SHADER_OUTPUTS];
+   ubyte gs_output_semantic_index[PIPE_MAX_SHADER_OUTPUTS];
+   uint gs_num_outputs = 0;
+
+   GLint i;
+   GLuint maxSlot = 0;
+   struct ureg_program *ureg;
+
+   struct st_gp_variant *gpv;
+
+   gpv = CALLOC_STRUCT(st_gp_variant);
+   if (!gpv)
+      return NULL;
+
+   _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_OUTPUT);
+   _mesa_remove_output_reads(&stgp->Base.Base, PROGRAM_VARYING);
+
+   ureg = ureg_create( TGSI_PROCESSOR_GEOMETRY );
+   if (ureg == NULL) {
+      FREE(gpv);
+      return NULL;
+   }
+
+   /* which vertex output goes to the first geometry input */
+   vslot = 0;
+
+   memset(inputMapping, 0, sizeof(inputMapping));
+   memset(outputMapping, 0, sizeof(outputMapping));
+
+   /*
+    * Convert Mesa program inputs to TGSI input register semantics.
+    */
+   for (attr = 0; attr < GEOM_ATTRIB_MAX; attr++) {
+      if (inputsRead & (1 << attr)) {
+         const GLuint slot = gs_num_inputs;
+
+         gs_num_inputs++;
+
+         inputMapping[attr] = slot;
+
+         stgp->input_map[slot + gs_array_offset] = vslot - gs_builtin_inputs;
+         stgp->input_to_index[attr] = vslot;
+         stgp->index_to_input[vslot] = attr;
+         ++vslot;
+
+         if (attr != GEOM_ATTRIB_PRIMITIVE_ID) {
+            gs_array_offset += 2;
+         } else
+            ++gs_builtin_inputs;
+
+#if 0
+         debug_printf("input map at %d = %d\n",
+                      slot + gs_array_offset, stgp->input_map[slot + gs_array_offset]);
+#endif
+
+         switch (attr) {
+         case GEOM_ATTRIB_PRIMITIVE_ID:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_PRIMID;
+            stgp->input_semantic_index[slot] = 0;
+            break;
+         case GEOM_ATTRIB_POSITION:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            stgp->input_semantic_index[slot] = 0;
+            break;
+         case GEOM_ATTRIB_COLOR0:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            stgp->input_semantic_index[slot] = 0;
+            break;
+         case GEOM_ATTRIB_COLOR1:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            stgp->input_semantic_index[slot] = 1;
+            break;
+         case GEOM_ATTRIB_FOG_FRAG_COORD:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            stgp->input_semantic_index[slot] = 0;
+            break;
+         case GEOM_ATTRIB_TEX_COORD:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            stgp->input_semantic_index[slot] = num_generic++;
+            break;
+         case GEOM_ATTRIB_VAR0:
+            /* fall-through */
+         default:
+            stgp->input_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            stgp->input_semantic_index[slot] = num_generic++;
+         }
+      }
+   }
+
+   /* initialize output semantics to defaults */
+   for (i = 0; i < PIPE_MAX_SHADER_OUTPUTS; i++) {
+      gs_output_semantic_name[i] = TGSI_SEMANTIC_GENERIC;
+      gs_output_semantic_index[i] = 0;
+   }
+
+   num_generic = 0;
+   /*
+    * Determine number of outputs, the (default) output register
+    * mapping and the semantic information for each output.
+    */
+   for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {
+      if (stgp->Base.Base.OutputsWritten & (1 << attr)) {
+         GLuint slot;
+
+         slot = gs_num_outputs;
+         gs_num_outputs++;
+         outputMapping[attr] = slot;
+
+         switch (attr) {
+         case GEOM_RESULT_POS:
+            assert(slot == 0);
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_POSITION;
+            gs_output_semantic_index[slot] = 0;
+            break;
+         case GEOM_RESULT_COL0:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            gs_output_semantic_index[slot] = 0;
+            break;
+         case GEOM_RESULT_COL1:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_COLOR;
+            gs_output_semantic_index[slot] = 1;
+            break;
+         case GEOM_RESULT_SCOL0:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            gs_output_semantic_index[slot] = 0;
+            break;
+         case GEOM_RESULT_SCOL1:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_BCOLOR;
+            gs_output_semantic_index[slot] = 1;
+            break;
+         case GEOM_RESULT_FOGC:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_FOG;
+            gs_output_semantic_index[slot] = 0;
+            break;
+         case GEOM_RESULT_PSIZ:
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_PSIZE;
+            gs_output_semantic_index[slot] = 0;
+            break;
+         case GEOM_RESULT_TEX0:
+         case GEOM_RESULT_TEX1:
+         case GEOM_RESULT_TEX2:
+         case GEOM_RESULT_TEX3:
+         case GEOM_RESULT_TEX4:
+         case GEOM_RESULT_TEX5:
+         case GEOM_RESULT_TEX6:
+         case GEOM_RESULT_TEX7:
+            /* fall-through */
+         case GEOM_RESULT_VAR0:
+            /* fall-through */
+         default:
+            assert(slot < Elements(gs_output_semantic_name));
+            /* use default semantic info */
+            gs_output_semantic_name[slot] = TGSI_SEMANTIC_GENERIC;
+            gs_output_semantic_index[slot] = num_generic++;
+         }
+      }
+   }
+
+   assert(gs_output_semantic_name[0] == TGSI_SEMANTIC_POSITION);
+
+   /* find max output slot referenced to compute gs_num_outputs */
+   for (attr = 0; attr < GEOM_RESULT_MAX; attr++) {
+      if (outputMapping[attr] != ~0 && outputMapping[attr] > maxSlot)
+         maxSlot = outputMapping[attr];
+   }
+   gs_num_outputs = maxSlot + 1;
+
+#if 0 /* debug */
+   {
+      GLuint i;
+      printf("outputMapping? %d\n", outputMapping ? 1 : 0);
+      if (outputMapping) {
+         printf("attr -> slot\n");
+         for (i = 0; i < 16;  i++) {
+            printf(" %2d       %3d\n", i, outputMapping[i]);
+         }
+      }
+      printf("slot    sem_name  sem_index\n");
+      for (i = 0; i < gs_num_outputs; i++) {
+         printf(" %2d         %d         %d\n",
+                i,
+                gs_output_semantic_name[i],
+                gs_output_semantic_index[i]);
+      }
+   }
+#endif
+
+   /* free old shader state, if any */
+   if (stgp->tgsi.tokens) {
+      st_free_tokens(stgp->tgsi.tokens);
+      stgp->tgsi.tokens = NULL;
+   }
+
+   ureg_property_gs_input_prim(ureg, stgp->Base.InputType);
+   ureg_property_gs_output_prim(ureg, stgp->Base.OutputType);
+   ureg_property_gs_max_vertices(ureg, stgp->Base.VerticesOut);
+
+   error = st_translate_mesa_program(st->ctx,
+                                     TGSI_PROCESSOR_GEOMETRY,
+                                     ureg,
+                                     &stgp->Base.Base,
+                                     /* inputs */
+                                     gs_num_inputs,
+                                     inputMapping,
+                                     stgp->input_semantic_name,
+                                     stgp->input_semantic_index,
+                                     NULL,
+                                     /* outputs */
+                                     gs_num_outputs,
+                                     outputMapping,
+                                     gs_output_semantic_name,
+                                     gs_output_semantic_index,
+                                     FALSE);
+
+   stgp->num_inputs = gs_num_inputs;
+   stgp->tgsi.tokens = ureg_get_tokens( ureg, NULL );
+   ureg_destroy( ureg );
+
+   /* fill in new variant */
+   gpv->driver_shader = pipe->create_gs_state(pipe, &stgp->tgsi);
+   gpv->key = *key;
+
+   if ((ST_DEBUG & DEBUG_TGSI) && (ST_DEBUG & DEBUG_MESA)) {
+      _mesa_print_program(&stgp->Base.Base);
+      debug_printf("\n");
+   }
+
+   if (ST_DEBUG & DEBUG_TGSI) {
+      tgsi_dump(stgp->tgsi.tokens, 0);
+      debug_printf("\n");
+   }
+
+   return gpv;
+}
+
+
+/**
+ * Get/create geometry program variant.
+ */
+struct st_gp_variant *
+st_get_gp_variant(struct st_context *st,
+                  struct st_geometry_program *stgp,
+                  const struct st_gp_variant_key *key)
+{
+   struct st_gp_variant *gpv;
+
+   /* Search for existing variant */
+   for (gpv = stgp->variants; gpv; gpv = gpv->next) {
+      if (memcmp(&gpv->key, key, sizeof(*key)) == 0) {
+         break;
+      }
+   }
+
+   if (!gpv) {
+      /* create new */
+      gpv = st_translate_geometry_program(st, stgp, key);
+      if (gpv) {
+         /* insert into list */
+         gpv->next = stgp->variants;
+         stgp->variants = gpv;
+      }
+   }
+
+   return gpv;
+}
+
+
+
+
+/**
+ * Debug- print current shader text
+ */
+void
+st_print_shaders(struct gl_context *ctx)
+{
+   struct gl_shader_program *shProg[3] = {
+      ctx->Shader.CurrentVertexProgram,
+      ctx->Shader.CurrentGeometryProgram,
+      ctx->Shader.CurrentFragmentProgram,
+   };
+   unsigned j;
+
+   for (j = 0; j < 3; j++) {
+      unsigned i;
+
+      if (shProg[j] == NULL)
+	 continue;
+
+      for (i = 0; i < shProg[j]->NumShaders; i++) {
+	 struct gl_shader *sh;
+
+	 switch (shProg[j]->Shaders[i]->Type) {
+	 case GL_VERTEX_SHADER:
+	    sh = (i != 0) ? NULL : shProg[j]->Shaders[i];
+	    break;
+	 case GL_GEOMETRY_SHADER_ARB:
+	    sh = (i != 1) ? NULL : shProg[j]->Shaders[i];
+	    break;
+	 case GL_FRAGMENT_SHADER:
+	    sh = (i != 2) ? NULL : shProg[j]->Shaders[i];
+	    break;
+	 default:
+	    assert(0);
+	    sh = NULL;
+	    break;
+	 }
+
+	 if (sh != NULL) {
+	    printf("GLSL shader %u of %u:\n", i, shProg[j]->NumShaders);
+	    printf("%s\n", sh->Source);
+	 }
+      }
+   }
+}
+
+
+/**
+ * Vert/Geom/Frag programs have per-context variants.  Free all the
+ * variants attached to the given program which match the given context.
+ */
+static void
+destroy_program_variants(struct st_context *st, struct gl_program *program)
+{
+   if (!program)
+      return;
+
+   switch (program->Target) {
+   case GL_VERTEX_PROGRAM_ARB:
+      {
+         struct st_vertex_program *stvp = (struct st_vertex_program *) program;
+         struct st_vp_variant *vpv, **prevPtr = &stvp->variants;
+
+         for (vpv = stvp->variants; vpv; ) {
+            struct st_vp_variant *next = vpv->next;
+            if (vpv->key.st == st) {
+               /* unlink from list */
+               *prevPtr = next;
+               /* destroy this variant */
+               delete_vp_variant(st, vpv);
+            }
+            else {
+               prevPtr = &vpv->next;
+            }
+            vpv = next;
+         }
+      }
+      break;
+   case GL_FRAGMENT_PROGRAM_ARB:
+      {
+         struct st_fragment_program *stfp =
+            (struct st_fragment_program *) program;
+         struct st_fp_variant *fpv, **prevPtr = &stfp->variants;
+
+         for (fpv = stfp->variants; fpv; ) {
+            struct st_fp_variant *next = fpv->next;
+            if (fpv->key.st == st) {
+               /* unlink from list */
+               *prevPtr = next;
+               /* destroy this variant */
+               delete_fp_variant(st, fpv);
+            }
+            else {
+               prevPtr = &fpv->next;
+            }
+            fpv = next;
+         }
+      }
+      break;
+   case MESA_GEOMETRY_PROGRAM:
+      {
+         struct st_geometry_program *stgp =
+            (struct st_geometry_program *) program;
+         struct st_gp_variant *gpv, **prevPtr = &stgp->variants;
+
+         for (gpv = stgp->variants; gpv; ) {
+            struct st_gp_variant *next = gpv->next;
+            if (gpv->key.st == st) {
+               /* unlink from list */
+               *prevPtr = next;
+               /* destroy this variant */
+               delete_gp_variant(st, gpv);
+            }
+            else {
+               prevPtr = &gpv->next;
+            }
+            gpv = next;
+         }
+      }
+      break;
+   default:
+      _mesa_problem(NULL, "Unexpected program target in "
+                    "destroy_program_variants_cb()");
+   }
+}
+
+
+/**
+ * Callback for _mesa_HashWalk.  Free all the shader's program variants
+ * which match the given context.
+ */
+static void
+destroy_shader_program_variants_cb(GLuint key, void *data, void *userData)
+{
+   struct st_context *st = (struct st_context *) userData;
+   struct gl_shader *shader = (struct gl_shader *) data;
+
+   switch (shader->Type) {
+   case GL_SHADER_PROGRAM_MESA:
+      {
+         struct gl_shader_program *shProg = (struct gl_shader_program *) data;
+         GLuint i;
+
+         for (i = 0; i < shProg->NumShaders; i++) {
+            destroy_program_variants(st, shProg->Shaders[i]->Program);
+         }
+
+         destroy_program_variants(st, (struct gl_program *)
+                                  shProg->VertexProgram);
+         destroy_program_variants(st, (struct gl_program *)
+                                  shProg->FragmentProgram);
+         destroy_program_variants(st, (struct gl_program *)
+                                  shProg->GeometryProgram);
+      }
+      break;
+   case GL_VERTEX_SHADER:
+   case GL_FRAGMENT_SHADER:
+   case GL_GEOMETRY_SHADER:
+      {
+         destroy_program_variants(st, shader->Program);
+      }
+      break;
+   default:
+      assert(0);
+   }
+}
+
+
+/**
+ * Callback for _mesa_HashWalk.  Free all the program variants which match
+ * the given context.
+ */
+static void
+destroy_program_variants_cb(GLuint key, void *data, void *userData)
+{
+   struct st_context *st = (struct st_context *) userData;
+   struct gl_program *program = (struct gl_program *) data;
+   destroy_program_variants(st, program);
+}
+
+
+/**
+ * Walk over all shaders and programs to delete any variants which
+ * belong to the given context.
+ * This is called during context tear-down.
+ */
+void
+st_destroy_program_variants(struct st_context *st)
+{
+   /* ARB vert/frag program */
+   _mesa_HashWalk(st->ctx->Shared->Programs,
+                  destroy_program_variants_cb, st);
+
+   /* GLSL vert/frag/geom shaders */
+   _mesa_HashWalk(st->ctx->Shared->ShaderObjects,
+                  destroy_shader_program_variants_cb, st);
+}