Remove old slang linker code.

3 files changed, 0 insertions, 1021 deletions

diff --git a/src/mesa/shader/slang/slang_analyse.c b/src/mesa/shader/slang/slang_analyse.c
deleted file mode 100644
index fe48a670eeb..00000000000
--- a/src/mesa/shader/slang/slang_analyse.c
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  6.5
- *
- * Copyright (C) 2006  Brian Paul   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, sublicense,
- * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL 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.
- */
-
-/**
- * \file slang_analyse.c
- * slang assembly code analysis
- * \author Michal Krol
- */
-
-#include "imports.h"
-#include "slang_analyse.h"
-#include "slang_utility.h"
-
-GLboolean _slang_analyse_texture_usage (slang_program *prog)
-{
-	GLuint i, count = 0;
-
-	_slang_texture_usages_dtr (&prog->texture_usage);
-	_slang_texture_usages_ctr (&prog->texture_usage);
-
-	/*
-	 * We could do a full code analysis to find out which uniforms are actually used.
-	 * For now, we are very conservative and extract them from uniform binding table, which
-	 * in turn also do not come from code analysis.
-	 */
-
-	for (i = 0; i < prog->uniforms.count; i++)
-	{
-		slang_uniform_binding *b = &prog->uniforms.table[i];
-
-		if (b->address[SLANG_SHADER_FRAGMENT] != ~0 && !slang_export_data_quant_struct (b->quant))
-		{
-			switch (slang_export_data_quant_type (b->quant))
-			{
-			case GL_SAMPLER_1D_ARB:
-			case GL_SAMPLER_2D_ARB:
-			case GL_SAMPLER_3D_ARB:
-			case GL_SAMPLER_CUBE_ARB:
-			case GL_SAMPLER_1D_SHADOW_ARB:
-			case GL_SAMPLER_2D_SHADOW_ARB:
-				count++;
-				break;
-			}
-		}
-	}
-
-	if (count == 0)
-		return GL_TRUE;
-	prog->texture_usage.table = (slang_texture_usage *) slang_alloc_malloc (
-		count * sizeof (slang_texture_usage));
-	if (prog->texture_usage.table == NULL)
-		return GL_FALSE;
-	prog->texture_usage.count = count;
-
-	for (count = i = 0; i < prog->uniforms.count; i++)
-	{
-		slang_uniform_binding *b = &prog->uniforms.table[i];
-
-		if (b->address[SLANG_SHADER_FRAGMENT] != ~0 && !slang_export_data_quant_struct (b->quant))
-		{
-			switch (slang_export_data_quant_type (b->quant))
-			{
-			case GL_SAMPLER_1D_ARB:
-			case GL_SAMPLER_2D_ARB:
-			case GL_SAMPLER_3D_ARB:
-			case GL_SAMPLER_CUBE_ARB:
-			case GL_SAMPLER_1D_SHADOW_ARB:
-			case GL_SAMPLER_2D_SHADOW_ARB:
-				prog->texture_usage.table[count].quant = b->quant;
-				prog->texture_usage.table[count].frag_address = b->address[SLANG_SHADER_FRAGMENT];
-				count++;
-				break;
-			}
-		}
-	}
-
-	return GL_TRUE;
-}
-
diff --git a/src/mesa/shader/slang/slang_analyse.h b/src/mesa/shader/slang/slang_analyse.h
deleted file mode 100644
index d7e39ae7ce7..00000000000
--- a/src/mesa/shader/slang/slang_analyse.h
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  6.5
- *
- * Copyright (C) 2006  Brian Paul   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, sublicense,
- * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL 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.
- */
-
-#if !defined SLANG_ANALYSE_H
-#define SLANG_ANALYSE_H
-
-#include "slang_link.h"
-
-#if defined __cplusplus
-extern "C" {
-#endif
-
-/*
- * Texture usage analysis is a bit more difficult than for fragment programs. While fragment
- * programs statically link to texture targets and texture units, shaders statically link
- * only to texture targets. The texture unit linkage is determined just before the execution
- * of a given primitive by reading active uniform samplers.
- *
- * This procedure retrieves a list of uniforms that reach texture sample instructions.
- */
-
-GLboolean _slang_analyse_texture_usage (slang_program *);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
-
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c
deleted file mode 100644
index 8894f78088d..00000000000
--- a/src/mesa/shader/slang/slang_link.c
+++ /dev/null
@@ -1,871 +0,0 @@
-/*
- * Mesa 3-D graphics library
- * Version:  6.6
- *
- * Copyright (C) 2006  Brian Paul   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, sublicense,
- * 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 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 NONINFRINGEMENT.  IN NO EVENT SHALL
- * BRIAN PAUL 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.
- */
-
-/**
- * \file slang_link.c
- * slang linker
- * \author Michal Krol
- */
-
-#include "imports.h"
-#include "slang_link.h"
-#include "slang_analyse.h"
-
-#define TABLE_GROW(PTR,TYPE,N) \
-   (PTR = (TYPE *) (slang_alloc_realloc (PTR, N * sizeof (TYPE), (N + 1) * sizeof (TYPE))))
-
-/*
- * Check if a given name starts with "gl_". Globals with this prefix are
- * treated differently, as they are built-in variables.
- */
-static GLboolean
-entry_has_gl_prefix (slang_atom name, slang_atom_pool *atoms)
-{
-   const GLchar *str;
-
-   str = slang_atom_pool_id (atoms, name);
-   return str[0] == 'g' && str[1] == 'l' && str[2] == '_';
-}
-
-/*
- * slang_active_variables
- */
-
-static GLvoid
-slang_active_variables_ctr (slang_active_variables *self)
-{
-   self->table = NULL;
-   self->count = 0;
-}
-
-static GLvoid
-slang_active_variables_dtr (slang_active_variables *self)
-{
-   GLuint i;
-
-   for (i = 0; i < self->count; i++)
-      slang_alloc_free (self->table[i].name);
-   slang_alloc_free (self->table);
-}
-
-/*
- * Active variable queried by the application cannot be a structure. Queriable globals
- * (uniforms and attributes) are decomposited into "simple" variables if they are
- * "complex".
- */
-
-static GLboolean
-add_simple_variable (slang_active_variables *self, slang_export_data_quant *q, const GLchar *name)
-{
-   GLuint n;
-   slang_active_variable *var;
-
-   n = self->count;
-   if (!TABLE_GROW(self->table, slang_active_variable, n))
-      return GL_FALSE;
-
-   /* Initialize the new element. Increment table size only when it is fully initilized. */
-   var = &self->table[n];
-   var->quant = q;
-   var->name = slang_string_duplicate (name);
-   if (var->name == NULL)
-      return GL_FALSE;
-   self->count++;
-
-   return GL_TRUE;
-}
-
-static GLboolean
-add_complex_variable (slang_active_variables *self, slang_export_data_quant *q, GLchar *name,
-                      slang_atom_pool *atoms)
-{
-   slang_string_concat (name, slang_atom_pool_id (atoms, q->name));
-
-   /* If array, add only first element. */
-   if (slang_export_data_quant_array (q))
-      slang_string_concat (name, "[0]");
-
-   if (slang_export_data_quant_struct (q)) {
-      GLuint field_pos, fields, i;
-
-      slang_string_concat (name, ".");
-      field_pos = slang_string_length (name);
-
-      /* Break it down into individual fields. */
-      fields = slang_export_data_quant_fields (q);
-      for (i = 0; i < fields; i++) {
-         if (!add_complex_variable (self, &q->structure[i], name, atoms))
-            return GL_FALSE;
-         name[field_pos] = '\0';
-      }
-
-      return GL_TRUE;
-   }
-
-   return add_simple_variable (self, q, name);
-}
-
-/*
- * Search a list of global variables with a given access (either attribute or uniform)
- * and add it to the list of active variables.
- */
-static GLboolean
-gather_active_variables (slang_active_variables *self, slang_export_data_table *tbl,
-                         slang_export_data_access access)
-{
-   GLuint i;
-
-   for (i = 0; i < tbl->count; i++) {
-      if (tbl->entries[i].access == access) {
-         GLchar name[1024] = "";
-
-         if (!add_complex_variable (self, &tbl->entries[i].quant, name, tbl->atoms))
-            return GL_FALSE;
-      }
-   }
-
-   return GL_TRUE;
-}
-
-/*
- * slang_attrib_overrides
- */
-
-static GLvoid
-slang_attrib_overrides_ctr (slang_attrib_overrides *self)
-{
-   self->table = NULL;
-   self->count = 0;
-}
-
-static GLvoid
-slang_attrib_overrides_dtr (slang_attrib_overrides *self)
-{
-   GLuint i;
-
-   for (i = 0; i < self->count; i++)
-      slang_alloc_free (self->table[i].name);
-   slang_alloc_free (self->table);
-}
-
-static slang_attrib_override *
-lookup_attrib_override (slang_attrib_overrides *self, const GLchar *name)
-{
-   GLuint n, i;
-
-   n = self->count;
-   for (i = 0; i < n; i++) {
-      if (slang_string_compare (name, self->table[i].name) == 0)
-         return &self->table[i];
-   }
-   return NULL;
-}
-
-GLboolean
-_slang_attrib_overrides_add (slang_attrib_overrides *self, GLuint index, const GLchar *name)
-{
-   slang_attrib_override *ovr;
-   GLuint n;
-
-   /* Attribs can be overriden multiple times. Look-up the table and replace
-    * its index if it is found. */
-   ovr = lookup_attrib_override (self, name);
-   if (ovr != NULL) {
-      ovr->index = index;
-      return GL_TRUE;
-   }
-
-   n = self->count;
-   if (!TABLE_GROW(self->table, slang_attrib_override, n))
-      return GL_FALSE;
-
-   /* Initialize the new element. Increment table size only when it is fully initilized. */
-   ovr = &self->table[n];
-   ovr->index = index;
-   ovr->name = slang_string_duplicate (name);
-   if (ovr->name == NULL)
-      return GL_FALSE;
-   self->count++;
-
-   return GL_TRUE;
-}
-
-/*
- * slang_uniform_bindings
- */
-
-static GLvoid
-slang_uniform_bindings_ctr (slang_uniform_bindings *self)
-{
-   self->table = NULL;
-   self->count = 0;
-}
-
-static GLvoid
-slang_uniform_bindings_dtr (slang_uniform_bindings *self)
-{
-   GLuint i;
-
-   for (i = 0; i < self->count; i++)
-      slang_alloc_free (self->table[i].name);
-   slang_alloc_free (self->table);
-}
-
-static GLboolean
-add_simple_uniform_binding (slang_uniform_bindings *self, slang_export_data_quant *q,
-                            const GLchar *name, GLuint index, GLuint addr)
-{
-   GLuint n, i;
-   slang_uniform_binding *bind;
-
-   /* Uniform binding table is shared between vertex and fragment shaders. If the same uniform
-    * is declared both in a vertex and fragment shader, only one uniform entry is maintained.
-    * When add a uniform binding there can be an entry already allocated for it by the other
-    * shader. */
-   n = self->count;
-   for (i = 0; i < n; i++) {
-      if (slang_string_compare (self->table[i].name, name) == 0) {
-         self->table[i].address[index] = addr;
-         return GL_TRUE;
-      }
-   }
-
-   if (!TABLE_GROW(self->table, slang_uniform_binding, n))
-      return GL_FALSE;
-
-   /* Initialize the new element. Increment table size only when it is fully initilized. */
-   bind = &self->table[n];
-   bind->quant = q;
-   bind->name = slang_string_duplicate (name);
-   if (bind->name == NULL)
-      return GL_FALSE;
-   for (i = 0; i < SLANG_SHADER_MAX; i++)
-      bind->address[i] = ~0;
-   bind->address[index] = addr;
-   self->count++;
-
-   return GL_TRUE;
-}
-
-static GLboolean
-add_complex_uniform_binding (slang_uniform_bindings *self, slang_export_data_quant *q,
-                             GLchar *name, slang_atom_pool *atoms, GLuint index, GLuint addr)
-{
-   GLuint count, i;
-
-   slang_string_concat (name, slang_atom_pool_id (atoms, q->name));
-   count = slang_export_data_quant_elements (q);
-
-   /* If array, add binding for every array element. */
-   for (i = 0; i < count; i++) {
-      GLuint bracket_pos;
-
-      bracket_pos = slang_string_length (name);
-      if (slang_export_data_quant_array (q))
-         _mesa_sprintf (&name[slang_string_length (name)], "[%d]", i);
-
-      if (slang_export_data_quant_struct (q)) {
-         GLuint field_pos, fields, i;
-
-         slang_string_concat (name, ".");
-         field_pos = slang_string_length (name);
-
-         /* Break it down into individual fields. */
-         fields = slang_export_data_quant_fields (q);
-         for (i = 0; i < fields; i++) {
-            if (!add_complex_uniform_binding (self, &q->structure[i], name, atoms, index, addr))
-               return GL_FALSE;
-
-            name[field_pos] = '\0';
-            addr += slang_export_data_quant_size (&q->structure[i]);
-         }
-      }
-      else {
-         if (!add_simple_uniform_binding (self, q, name, index, addr))
-            return GL_FALSE;
-
-         addr += slang_export_data_quant_size (q);
-      }
-
-      name[bracket_pos] = '\0';
-   }
-
-   return GL_TRUE;
-}
-
-static GLboolean
-gather_uniform_bindings (slang_uniform_bindings *self, slang_export_data_table *tbl, GLuint index)
-{
-   GLuint n, i;
-
-   n = tbl->count;
-   for (i = 0; i < n; i++) {
-      if (tbl->entries[i].access == slang_exp_uniform) {
-         GLchar name[1024] = "";
-
-         if (!add_complex_uniform_binding (self, &tbl->entries[i].quant, name, tbl->atoms, index,
-                                           tbl->entries[i].address))
-            return GL_FALSE;
-      }
-   }
-
-   return GL_TRUE;
-}
-
-/*
- * slang_attrib_bindings
- */
-
-static GLvoid
-slang_attrib_bindings_ctr (slang_attrib_bindings *self)
-{
-   GLuint i;
-
-   self->binding_count = 0;
-   for (i = 0; i < MAX_VERTEX_ATTRIBS; i++)
-      self->slots[i].addr = ~0;
-}
-
-static GLvoid
-slang_attrib_bindings_dtr (slang_attrib_bindings *self)
-{
-   GLuint i;
-
-   for (i = 0; i < self->binding_count; i++)
-      slang_alloc_free (self->bindings[i].name);
-}
-
-/*
- * NOTE: If conventional vertex attribute gl_Vertex is used, application cannot use
- *       vertex attrib index 0 for binding override. Currently this is not checked.
- *       Anyways, attrib index 0 is not used when not explicitly asked.
- */
-
-static GLuint
-can_allocate_attrib_slots (slang_attrib_bindings *self, GLuint index, GLuint count)
-{
-   GLuint i;
-
-   for (i = 0; i < count; i++) {
-      if (self->slots[index + i].addr != ~0)
-         break;
-   }
-   return i;
-}
-
-static GLuint
-allocate_attrib_slots (slang_attrib_bindings *self, GLuint count)
-{
-   GLuint i;
-
-   /* Start with attrib index 1. Index 0 will be used when explicitly
-    * asked by application binding. */
-   for (i = 1; i <= MAX_VERTEX_ATTRIBS - count; i++) {
-      GLuint size;
-
-      size = can_allocate_attrib_slots (self, i, count);
-      if (size == count)
-         return i;
-
-      /* Speed-up the search a bit. */
-      i += size;
-   }
-
-   return MAX_VERTEX_ATTRIBS;
-}
-
-static GLboolean
-add_attrib_binding (slang_attrib_bindings *self, slang_export_data_quant *q, const GLchar *name,
-                    GLuint addr, GLuint index_override)
-{
-   GLuint slot_span, slot_fill, slot_index, i;
-   slang_attrib_binding *bind;
-
-   assert (slang_export_data_quant_simple (q));
-
-   switch (slang_export_data_quant_type (q)) {
-   case GL_FLOAT:
-      slot_span = 1;
-      slot_fill = 1;
-      break;
-   case GL_FLOAT_VEC2:
-      slot_span = 1;
-      slot_fill = 2;
-      break;
-   case GL_FLOAT_VEC3:
-      slot_span = 1;
-      slot_fill = 3;
-      break;
-   case GL_FLOAT_VEC4:
-      slot_span = 1;
-      slot_fill = 4;
-      break;
-   case GL_FLOAT_MAT2:
-      slot_span = 2;
-      slot_fill = 2;
-      break;
-   case GL_FLOAT_MAT3:
-      slot_span = 3;
-      slot_fill = 3;
-      break;
-   case GL_FLOAT_MAT4:
-      slot_span = 4;
-      slot_fill = 4;
-      break;
-   default:
-      assert (0);
-   }
-
-   if (index_override == MAX_VERTEX_ATTRIBS)
-      slot_index = allocate_attrib_slots (self, slot_span);
-   else if (can_allocate_attrib_slots (self, index_override, slot_span) == slot_span)
-      slot_index = index_override;
-   else
-      slot_index = MAX_VERTEX_ATTRIBS;
-
-   if (slot_index == MAX_VERTEX_ATTRIBS) {
-      /* TODO: info log: error: MAX_VERTEX_ATTRIBS exceeded */
-      return GL_FALSE;
-   }
-
-   /* Initialize the new element. Increment table size only when it is fully initilized. */
-   bind = &self->bindings[self->binding_count];
-   bind->quant = q;
-   bind->name = slang_string_duplicate (name);
-   if (bind->name == NULL)
-      return GL_FALSE;
-   bind->first_slot_index = slot_index;
-   self->binding_count++;
-
-   for (i = 0; i < slot_span; i++) {
-      slang_attrib_slot *slot;
-
-      slot = &self->slots[bind->first_slot_index + i];
-      slot->addr = addr + i * slot_fill * 4;
-      slot->fill = slot_fill;
-   }
-
-   return GL_TRUE;
-}
-
-static GLboolean
-gather_attrib_bindings (slang_attrib_bindings *self, slang_export_data_table *tbl,
-                        slang_attrib_overrides *ovr)
-{
-   GLuint i;
-
-   /* First pass. Gather attribs that have overriden index slots. */
-   for (i = 0; i < tbl->count; i++) {
-      if (tbl->entries[i].access == slang_exp_attribute &&
-          !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) {
-         slang_export_data_quant *quant;
-         const GLchar *id;
-         slang_attrib_override *ao;
-
-         quant = &tbl->entries[i].quant;
-         id = slang_atom_pool_id (tbl->atoms, quant->name);
-         ao = lookup_attrib_override (ovr, id);
-         if (ao != NULL) {
-            if (!add_attrib_binding (self, quant, id, tbl->entries[i].address, ao->index))
-               return GL_FALSE;
-         }
-      }
-   }
-
-   /* Second pass. Gather attribs that have not overriden index slots. */
-   for (i = 0; i < tbl->count; i++) {
-      if (tbl->entries[i].access == slang_exp_attribute &&
-          !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) {
-         slang_export_data_quant *quant;
-         const GLchar *id;
-         slang_attrib_override *ao;
-
-         quant = &tbl->entries[i].quant;
-         id = slang_atom_pool_id (tbl->atoms, quant->name);
-         ao = lookup_attrib_override (ovr, id);
-         if (ao == NULL) {
-            if (!add_attrib_binding (self, quant, id, tbl->entries[i].address, ao->index))
-               return GL_FALSE;
-         }
-      }
-   }
-
-   return GL_TRUE;
-}
-
-/*
- * slang_varying_bindings
- */
-
-static GLvoid
-slang_varying_bindings_ctr (slang_varying_bindings *self)
-{
-   self->binding_count = 0;
-   self->slot_count = 0;
-}
-
-static GLvoid
-slang_varying_bindings_dtr (slang_varying_bindings *self)
-{
-   GLuint i;
-
-   for (i = 0; i < self->binding_count; i++)
-      slang_alloc_free (self->bindings[i].name);
-}
-
-static GLvoid
-update_varying_slots (slang_varying_slot *slots, GLuint count, GLboolean is_vert, GLuint addr,
-                      GLuint do_offset)
-{
-   GLuint i;
-
-   for (i = 0; i < count; i++) {
-      if (is_vert)
-         slots[i].vert_addr = addr + i * 4 * do_offset;
-      else
-         slots[i].frag_addr = addr + i * 4 * do_offset;
-   }
-}
-
-static GLboolean
-add_varying_binding (slang_varying_bindings *self, slang_export_data_quant *q, const GLchar *name,
-                     GLboolean is_vert, GLuint addr)
-{
-   GLuint n, slot_span, i;
-   slang_varying_binding *bind;
-
-   n = self->binding_count;
-   slot_span = slang_export_data_quant_components (q) * slang_export_data_quant_elements (q);
-   for (i = 0; i < n; i++) {
-      if (slang_string_compare (self->bindings[i].name, name) == 0) {
-         /* TODO: data quantities must match, or else link fails */
-         update_varying_slots (&self->slots[self->bindings[i].first_slot_index], slot_span,
-                               is_vert, addr, 1);
-         return GL_TRUE;
-      }
-   }
-
-   if (self->slot_count + slot_span > MAX_VARYING * 4) {
-      /* TODO: info log: error: MAX_VARYING_FLOATS exceeded */
-      return GL_FALSE;
-   }
-
-   /* Initialize the new element. Increment table size only when it is fully initilized. */
-   bind = &self->bindings[n];
-   bind->quant = q;
-   bind->name = slang_string_duplicate (name);
-   if (bind->name == NULL)
-      return GL_FALSE;
-   bind->first_slot_index = self->slot_count;
-   self->binding_count++;
-
-   update_varying_slots (&self->slots[bind->first_slot_index], slot_span, is_vert, addr, 1);
-   update_varying_slots (&self->slots[bind->first_slot_index], slot_span, !is_vert, ~0, 0);
-   self->slot_count += slot_span;
-
-   return GL_TRUE;
-}
-
-static GLboolean
-gather_varying_bindings (slang_varying_bindings *self, slang_export_data_table *tbl,
-                         GLboolean is_vert)
-{
-   GLuint i;
-
-   for (i = 0; i < tbl->count; i++) {
-      if (tbl->entries[i].access == slang_exp_varying &&
-          !entry_has_gl_prefix (tbl->entries[i].quant.name, tbl->atoms)) {
-         if (!add_varying_binding (self, &tbl->entries[i].quant,
-                                   slang_atom_pool_id (tbl->atoms, tbl->entries[i].quant.name),
-                                   is_vert, tbl->entries[i].address))
-            return GL_FALSE;
-      }
-   }
-
-   return GL_TRUE;
-}
-
-/*
- * slang_texture_bindings
- */
-
-GLvoid
-_slang_texture_usages_ctr (slang_texture_usages *self)
-{
-   self->table = NULL;
-   self->count = 0;
-}
-
-GLvoid
-_slang_texture_usages_dtr (slang_texture_usages *self)
-{
-   slang_alloc_free (self->table);
-}
-
-/*
- * slang_program
- */
-
-GLvoid
-_slang_program_ctr (slang_program *self)
-{
-   GLuint i;
-
-   slang_active_variables_ctr (&self->active_uniforms);
-   slang_active_variables_ctr (&self->active_attribs);
-   slang_attrib_overrides_ctr (&self->attrib_overrides);
-   slang_uniform_bindings_ctr (&self->uniforms);
-   slang_attrib_bindings_ctr (&self->attribs);
-   slang_varying_bindings_ctr (&self->varyings);
-   _slang_texture_usages_ctr (&self->texture_usage);
-   for (i = 0; i < SLANG_SHADER_MAX; i++) {
-      GLuint j;
-
-      for (j = 0; j < SLANG_COMMON_FIXED_MAX; j++)
-         self->common_fixed_entries[i][j] = ~0;
-      for (j = 0; j < SLANG_COMMON_CODE_MAX; j++)
-         self->code[i][j] = ~0;
-      self->assemblies[i] = NULL;
-   }
-   for (i = 0; i < SLANG_VERTEX_FIXED_MAX; i++)
-      self->vertex_fixed_entries[i] = ~0;
-   for (i = 0; i < SLANG_FRAGMENT_FIXED_MAX; i++)
-      self->fragment_fixed_entries[i] = ~0;
-}
-
-GLvoid
-_slang_program_dtr (slang_program *self)
-{
-   slang_active_variables_dtr (&self->active_uniforms);
-   slang_active_variables_dtr (&self->active_attribs);
-   slang_attrib_overrides_dtr (&self->attrib_overrides);
-   slang_uniform_bindings_dtr (&self->uniforms);
-   slang_attrib_bindings_dtr (&self->attribs);
-   slang_varying_bindings_dtr (&self->varyings);
-   _slang_texture_usages_dtr (&self->texture_usage);
-}
-
-GLvoid
-_slang_program_rst (slang_program *self)
-{
-   GLuint i;
-
-   slang_active_variables_dtr (&self->active_uniforms);
-   slang_active_variables_dtr (&self->active_attribs);
-   slang_uniform_bindings_dtr (&self->uniforms);
-   slang_attrib_bindings_dtr (&self->attribs);
-   slang_varying_bindings_dtr (&self->varyings);
-   _slang_texture_usages_dtr (&self->texture_usage);
-
-   slang_active_variables_ctr (&self->active_uniforms);
-   slang_active_variables_ctr (&self->active_attribs);
-   slang_uniform_bindings_ctr (&self->uniforms);
-   slang_attrib_bindings_ctr (&self->attribs);
-   slang_varying_bindings_ctr (&self->varyings);
-   _slang_texture_usages_ctr (&self->texture_usage);
-   for (i = 0; i < SLANG_SHADER_MAX; i++) {
-      GLuint j;
-
-      for (j = 0; j < SLANG_COMMON_FIXED_MAX; j++)
-         self->common_fixed_entries[i][j] = ~0;
-      for (j = 0; j < SLANG_COMMON_CODE_MAX; j++)
-         self->code[i][j] = ~0;
-   }
-   for (i = 0; i < SLANG_VERTEX_FIXED_MAX; i++)
-      self->vertex_fixed_entries[i] = ~0;
-   for (i = 0; i < SLANG_FRAGMENT_FIXED_MAX; i++)
-      self->fragment_fixed_entries[i] = ~0;
-}
-
-/*
- * _slang_link()
- */
-
-static GLuint
-gd (slang_export_data_table *tbl, const GLchar *name)
-{
-   slang_atom atom;
-   GLuint i;
-
-   atom = slang_atom_pool_atom (tbl->atoms, name);
-   if (atom == SLANG_ATOM_NULL)
-      return ~0;
-
-   for (i = 0; i < tbl->count; i++) {
-      if (atom == tbl->entries[i].quant.name)
-         return tbl->entries[i].address;
-   }
-   return ~0;
-}
-
-static GLvoid
-resolve_common_fixed (GLuint e[], slang_export_data_table *tbl)
-{
-   e[SLANG_COMMON_FIXED_MODELVIEWMATRIX] = gd (tbl, "gl_ModelViewMatrix");
-   e[SLANG_COMMON_FIXED_PROJECTIONMATRIX] = gd (tbl, "gl_ProjectionMatrix");
-   e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIX] = gd (tbl, "gl_ModelViewProjectionMatrix");
-   e[SLANG_COMMON_FIXED_TEXTUREMATRIX] = gd (tbl, "gl_TextureMatrix");
-   e[SLANG_COMMON_FIXED_NORMALMATRIX] = gd (tbl, "gl_NormalMatrix");
-   e[SLANG_COMMON_FIXED_MODELVIEWMATRIXINVERSE] = gd (tbl, "gl_ModelViewMatrixInverse");
-   e[SLANG_COMMON_FIXED_PROJECTIONMATRIXINVERSE] = gd (tbl, "gl_ProjectionMatrixInverse");
-   e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXINVERSE] = gd (tbl, "gl_ModelViewProjectionMatrixInverse");
-   e[SLANG_COMMON_FIXED_TEXTUREMATRIXINVERSE] = gd (tbl, "gl_TextureMatrixInverse");
-   e[SLANG_COMMON_FIXED_MODELVIEWMATRIXTRANSPOSE] = gd (tbl, "gl_ModelViewMatrixTranspose");
-   e[SLANG_COMMON_FIXED_PROJECTIONMATRIXTRANSPOSE] = gd (tbl, "gl_ProjectionMatrixTranspose");
-   e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXTRANSPOSE] = gd (tbl, "gl_ModelViewProjectionMatrixTranspose");
-   e[SLANG_COMMON_FIXED_TEXTUREMATRIXTRANSPOSE] = gd (tbl, "gl_TextureMatrixTranspose");
-   e[SLANG_COMMON_FIXED_MODELVIEWMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ModelViewMatrixInverseTranspose");
-   e[SLANG_COMMON_FIXED_PROJECTIONMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ProjectionMatrixInverseTranspose");
-   e[SLANG_COMMON_FIXED_MODELVIEWPROJECTIONMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_ModelViewProjectionMatrixInverseTranspose");
-   e[SLANG_COMMON_FIXED_TEXTUREMATRIXINVERSETRANSPOSE] = gd (tbl, "gl_TextureMatrixInverseTranspose");
-   e[SLANG_COMMON_FIXED_NORMALSCALE] = gd (tbl, "gl_NormalScale");
-   e[SLANG_COMMON_FIXED_DEPTHRANGE] = gd (tbl, "gl_DepthRange");
-   e[SLANG_COMMON_FIXED_CLIPPLANE] = gd (tbl, "gl_ClipPlane");
-   e[SLANG_COMMON_FIXED_POINT] = gd (tbl, "gl_Point");
-   e[SLANG_COMMON_FIXED_FRONTMATERIAL] = gd (tbl, "gl_FrontMaterial");
-   e[SLANG_COMMON_FIXED_BACKMATERIAL] = gd (tbl, "gl_BackMaterial");
-   e[SLANG_COMMON_FIXED_LIGHTSOURCE] = gd (tbl, "gl_LightSource");
-   e[SLANG_COMMON_FIXED_LIGHTMODEL] = gd (tbl, "gl_LightModel");
-   e[SLANG_COMMON_FIXED_FRONTLIGHTMODELPRODUCT] = gd (tbl, "gl_FrontLightModelProduct");
-   e[SLANG_COMMON_FIXED_BACKLIGHTMODELPRODUCT] = gd (tbl, "gl_BackLightModelProduct");
-   e[SLANG_COMMON_FIXED_FRONTLIGHTPRODUCT] = gd (tbl, "gl_FrontLightProduct");
-   e[SLANG_COMMON_FIXED_BACKLIGHTPRODUCT] = gd (tbl, "gl_BackLightProduct");
-   e[SLANG_COMMON_FIXED_TEXTUREENVCOLOR] = gd (tbl, "gl_TextureEnvColor");
-   e[SLANG_COMMON_FIXED_EYEPLANES] = gd (tbl, "gl_EyePlaneS");
-   e[SLANG_COMMON_FIXED_EYEPLANET] = gd (tbl, "gl_EyePlaneT");
-   e[SLANG_COMMON_FIXED_EYEPLANER] = gd (tbl, "gl_EyePlaneR");
-   e[SLANG_COMMON_FIXED_EYEPLANEQ] = gd (tbl, "gl_EyePlaneQ");
-   e[SLANG_COMMON_FIXED_OBJECTPLANES] = gd (tbl, "gl_ObjectPlaneS");
-   e[SLANG_COMMON_FIXED_OBJECTPLANET] = gd (tbl, "gl_ObjectPlaneT");
-   e[SLANG_COMMON_FIXED_OBJECTPLANER] = gd (tbl, "gl_ObjectPlaneR");
-   e[SLANG_COMMON_FIXED_OBJECTPLANEQ] = gd (tbl, "gl_ObjectPlaneQ");
-   e[SLANG_COMMON_FIXED_FOG] = gd (tbl, "gl_Fog");
-}
-
-static GLvoid
-resolve_vertex_fixed (GLuint e[], slang_export_data_table *tbl)
-{
-   e[SLANG_VERTEX_FIXED_POSITION] = gd (tbl, "gl_Position");
-   e[SLANG_VERTEX_FIXED_POINTSIZE] = gd (tbl,  "gl_PointSize");
-   e[SLANG_VERTEX_FIXED_CLIPVERTEX] = gd (tbl, "gl_ClipVertex");
-   e[SLANG_VERTEX_FIXED_COLOR] = gd (tbl, "gl_Color");
-   e[SLANG_VERTEX_FIXED_SECONDARYCOLOR] = gd (tbl, "gl_SecondaryColor");
-   e[SLANG_VERTEX_FIXED_NORMAL] = gd (tbl, "gl_Normal");
-   e[SLANG_VERTEX_FIXED_VERTEX] = gd (tbl, "gl_Vertex");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD0] = gd (tbl, "gl_MultiTexCoord0");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD1] = gd (tbl, "gl_MultiTexCoord1");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD2] = gd (tbl, "gl_MultiTexCoord2");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD3] = gd (tbl, "gl_MultiTexCoord3");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD4] = gd (tbl, "gl_MultiTexCoord4");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD5] = gd (tbl, "gl_MultiTexCoord5");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD6] = gd (tbl, "gl_MultiTexCoord6");
-   e[SLANG_VERTEX_FIXED_MULTITEXCOORD7] = gd (tbl, "gl_MultiTexCoord7");
-   e[SLANG_VERTEX_FIXED_FOGCOORD] = gd (tbl, "gl_FogCoord");
-   e[SLANG_VERTEX_FIXED_FRONTCOLOR] = gd (tbl, "gl_FrontColor");
-   e[SLANG_VERTEX_FIXED_BACKCOLOR] = gd (tbl, "gl_BackColor");
-   e[SLANG_VERTEX_FIXED_FRONTSECONDARYCOLOR] = gd (tbl, "gl_FrontSecondaryColor");
-   e[SLANG_VERTEX_FIXED_BACKSECONDARYCOLOR] = gd (tbl, "gl_BackSecondaryColor");
-   e[SLANG_VERTEX_FIXED_TEXCOORD] = gd (tbl, "gl_TexCoord");
-   e[SLANG_VERTEX_FIXED_FOGFRAGCOORD] = gd (tbl, "gl_FogFragCoord");
-}
-
-static GLvoid
-resolve_fragment_fixed (GLuint e[], slang_export_data_table *tbl)
-{
-   e[SLANG_FRAGMENT_FIXED_FRAGCOORD] = gd (tbl, "gl_FragCoord");
-   e[SLANG_FRAGMENT_FIXED_FRONTFACING] = gd (tbl, "gl_FrontFacing");
-   e[SLANG_FRAGMENT_FIXED_FRAGCOLOR] = gd (tbl, "gl_FragColor");
-   e[SLANG_FRAGMENT_FIXED_FRAGDATA] = gd (tbl, "gl_FragData");
-   e[SLANG_FRAGMENT_FIXED_FRAGDEPTH] = gd (tbl, "gl_FragDepth");
-   e[SLANG_FRAGMENT_FIXED_COLOR] = gd (tbl, "gl_Color");
-   e[SLANG_FRAGMENT_FIXED_SECONDARYCOLOR] = gd (tbl, "gl_SecondaryColor");
-   e[SLANG_FRAGMENT_FIXED_TEXCOORD] = gd (tbl, "gl_TexCoord");
-   e[SLANG_FRAGMENT_FIXED_FOGFRAGCOORD] = gd (tbl, "gl_FogFragCoord");
-}
-
-static GLuint
-gc (slang_export_code_table *tbl, const GLchar *name)
-{
-   slang_atom atom;
-   GLuint i;
-
-   atom = slang_atom_pool_atom (tbl->atoms, name);
-   if (atom == SLANG_ATOM_NULL)
-      return ~0;
-
-   for (i = 0; i < tbl->count; i++) {
-      if (atom == tbl->entries[i].name)
-         return tbl->entries[i].address;
-   }
-   return ~0;
-}
-
-static GLvoid
-resolve_common_code (GLuint code[], slang_export_code_table *tbl)
-{
-   code[SLANG_COMMON_CODE_MAIN] = gc (tbl, "@main");
-}
-
-GLboolean
-_slang_link (slang_program *prog, slang_code_object **objects, GLuint count)
-{
-   GLuint i;
-
-   for (i = 0; i < count; i++) {
-      GLuint index;
-
-      if (objects[i]->unit.type == slang_unit_fragment_shader) {
-         index = SLANG_SHADER_FRAGMENT;
-         resolve_fragment_fixed (prog->fragment_fixed_entries, &objects[i]->expdata);
-      }
-      else {
-         index = SLANG_SHADER_VERTEX;
-         resolve_vertex_fixed (prog->vertex_fixed_entries, &objects[i]->expdata);
-         if (!gather_attrib_bindings (&prog->attribs, &objects[i]->expdata,
-                                      &prog->attrib_overrides))
-            return GL_FALSE;
-      }
-
-      if (!gather_active_variables (&prog->active_uniforms, &objects[i]->expdata, slang_exp_uniform))
-         return GL_FALSE;
-      if (!gather_active_variables (&prog->active_attribs, &objects[i]->expdata, slang_exp_attribute))
-         return GL_FALSE;
-      if (!gather_uniform_bindings (&prog->uniforms, &objects[i]->expdata, index))
-         return GL_FALSE;
-      if (!gather_varying_bindings (&prog->varyings, &objects[i]->expdata,
-                                    index == SLANG_SHADER_VERTEX))
-         return GL_FALSE;
-      resolve_common_fixed (prog->common_fixed_entries[index], &objects[i]->expdata);
-      resolve_common_code (prog->code[index], &objects[i]->expcode);
-      prog->assemblies[index] = &objects[i]->assembly;
-   }
-
-   /* TODO: all varyings read by fragment shader must be written by vertex shader */
-
-   if (!_slang_analyse_texture_usage (prog))
-      return GL_FALSE;
-
-   return GL_TRUE;
-}
-