src/mesa/main/extensions.c

   1 /* $Id: extensions.c,v 1.5 1999/10/08 09:27:10 keithw Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.1
   6  *
   7  * Copyright (C) 1999  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #include <stdlib.h>
  29 #include "context.h"
  30 #include "extensions.h"
  31 #include "simple_list.h"
  32 #include "types.h"
  33
  34
  35 #define MAX_EXT_NAMELEN 80
  36 #define MALLOC_STRUCT(T)  (struct T *) malloc( sizeof(struct T) )
  37
  38 struct extension {
  39    struct extension *next, *prev;
  40    int enabled;
  41    char name[MAX_EXT_NAMELEN+1];
  42    void (*notify)( GLcontext *, GLboolean );
  43 };
  44
  45
  46
  47 static struct { int enabled; const char *name; } default_extensions[] = {
  48    { ALWAYS_ENABLED, "GL_EXT_blend_color" },
  49    { DEFAULT_OFF,    "ARB_imaging" },
  50    { DEFAULT_ON,     "GL_EXT_blend_minmax" },
  51    { DEFAULT_ON,     "GL_EXT_blend_logic_op" },
  52    { DEFAULT_ON,     "GL_EXT_blend_subtract" },
  53    { DEFAULT_ON,     "GL_EXT_paletted_texture" },
  54    { DEFAULT_ON,     "GL_EXT_point_parameters" },
  55    { ALWAYS_ENABLED, "GL_EXT_polygon_offset" },
  56    { ALWAYS_ENABLED, "GL_EXT_vertex_array" },
  57    { ALWAYS_ENABLED, "GL_EXT_texture_object" },
  58    { DEFAULT_ON,     "GL_EXT_texture3D" },
  59    { ALWAYS_ENABLED, "GL_MESA_window_pos" },
  60    { ALWAYS_ENABLED, "GL_MESA_resize_buffers" },
  61    { ALWAYS_ENABLED, "GL_EXT_shared_texture_palette" },
  62    { ALWAYS_ENABLED, "GL_EXT_rescale_normal" },
  63    { ALWAYS_ENABLED, "GL_EXT_abgr" },
  64    { ALWAYS_ENABLED, "GL_SGIS_texture_edge_clamp" },
  65    { ALWAYS_ENABLED, "GL_EXT_stencil_wrap" },
  66    { DEFAULT_ON,     "GL_INGR_blend_func_separate" },
  67    { DEFAULT_ON,     "GL_ARB_multitexture" },
  68    { ALWAYS_ENABLED, "GL_NV_texgen_reflection" },
  69    { DEFAULT_ON,     "GL_PGI_misc_hints" },
  70    { DEFAULT_ON,     "GL_EXT_compiled_vertex_array" },
  71    { DEFAULT_OFF,    "GL_EXT_vertex_array_set" },
  72    { DEFAULT_ON,     "GL_EXT_clip_volume_hint" },
  73    { ALWAYS_ENABLED, "GL_EXT_get_proc_address" }
  74 };
  75
  76
  77 int gl_extensions_add( GLcontext *ctx,
  78                        int state,
  79                        const char *name,
  80                        void (*notify)() )
  81 {
  82    (void) notify;
  83
  84    if (ctx->Extensions.ext_string == 0)
  85    {
  86       struct extension *t = MALLOC_STRUCT(extension);
  87       t->enabled = state;
  88       strncpy(t->name, name, MAX_EXT_NAMELEN);
  89       t->name[MAX_EXT_NAMELEN] = 0;
  90       t->notify = (void (*)(GLcontext *, GLboolean)) notify;
  91       insert_at_tail( ctx->Extensions.ext_list, t );
  92       return 0;
  93    }
  94    return 1;
  95 }
  96
  97
  98 static int set_extension( GLcontext *ctx, const char *name, GLuint state )
  99 {
 100    struct extension *i;
 101    foreach( i, ctx->Extensions.ext_list )
 102       if (strncmp(i->name, name, MAX_EXT_NAMELEN) == 0)
 103          break;
 104
 105    if (i == ctx->Extensions.ext_list) return 1;
 106
 107    if (i->enabled && !(i->enabled & ALWAYS_ENABLED))
 108    {
 109       if (i->notify) i->notify( ctx, state );
 110       i->enabled = state;
 111    }
 112
 113    return 0;
 114 }
 115
 116
 117 int gl_extensions_enable( GLcontext *ctx, const char *name )
 118 {
 119    if (ctx->Extensions.ext_string == 0)
 120       return set_extension( ctx, name, 1 );
 121    return 1;
 122 }
 123
 124
 125 int gl_extensions_disable( GLcontext *ctx, const char *name )
 126 {
 127    if (ctx->Extensions.ext_string == 0)
 128       return set_extension( ctx, name, 0 );
 129    return 1;
 130 }
 131
 132
 133 void gl_extensions_dtr( GLcontext *ctx )
 134 {
 135    struct extension *i, *nexti;
 136
 137    if (ctx->Extensions.ext_string) {
 138       free( ctx->Extensions.ext_string );
 139       ctx->Extensions.ext_string = 0;
 140    }
 141
 142    if (ctx->Extensions.ext_list) {
 143       foreach_s( i, nexti, ctx->Extensions.ext_list ) {
 144          remove_from_list( i );
 145          free( i );
 146       }
 147
 148       free(ctx->Extensions.ext_list);
 149       ctx->Extensions.ext_list = 0;
 150    }
 151 }
 152
 153
 154 void gl_extensions_ctr( GLcontext *ctx )
 155 {
 156    GLuint i;
 157
 158    ctx->Extensions.ext_string = 0;
 159    ctx->Extensions.ext_list = MALLOC_STRUCT(extension);
 160    make_empty_list( ctx->Extensions.ext_list );
 161
 162    for (i = 0 ; i < Elements(default_extensions) ; i++) {
 163       gl_extensions_add( ctx,
 164                          default_extensions[i].enabled,
 165                          default_extensions[i].name,
 166                          0 );
 167    }
 168 }
 169
 170
 171 const char *gl_extensions_get_string( GLcontext *ctx )
 172 {
 173    if (ctx->Extensions.ext_string == 0)
 174    {
 175       struct extension *i;
 176       char *str;
 177       GLuint len = 0;
 178       foreach (i, ctx->Extensions.ext_list)
 179          if (i->enabled)
 180             len += strlen(i->name) + 1;
 181
 182       if (len == 0)
 183          return "";
 184
 185       str = (char *)malloc(len * sizeof(char));
 186       ctx->Extensions.ext_string = str;
 187
 188       foreach (i, ctx->Extensions.ext_list)
 189          if (i->enabled) {
 190             strcpy(str, i->name);
 191             str += strlen(str);
 192             *str++ = ' ';
 193          }
 194
 195       *(str-1) = 0;
 196    }
 197
 198    return ctx->Extensions.ext_string;
 199 }
 200
 201
 202
 203 /*
 204  * Return the address of an extension function.
 205  * NOTE: this function could be optimized to binary search a sorted
 206  * list of function names.
 207  * Also, this function does not yet do per-context function searches.
 208  * Not applicable to Mesa at this time.
 209  */
 210 void (* gl_GetProcAddress( GLcontext *ctx, const GLubyte *procName ))()
 211 {
 212    struct proc {
 213       const char *name;
 214       GLfunction address;
 215    };
 216    static struct proc procTable[] = {
 217 #ifdef GL_EXT_get_proc_address
 218       { "glGetProcAddressEXT", (GLfunction) glGetProcAddressEXT },  /* me! */
 219 #endif
 220       /* OpenGL 1.1 functions */
 221       { "glEnableClientState", (GLfunction) glEnableClientState },
 222       { "glDisableClientState", (GLfunction) glDisableClientState },
 223       { "glPushClientAttrib", (GLfunction) glPushClientAttrib },
 224       { "glPopClientAttrib", (GLfunction) glPopClientAttrib },
 225       { "glIndexub", (GLfunction) glIndexub },
 226       { "glIndexubv", (GLfunction) glIndexubv },
 227       { "glVertexPointer", (GLfunction) glVertexPointer },
 228       { "glNormalPointer", (GLfunction) glNormalPointer },
 229       { "glColorPointer", (GLfunction) glColorPointer },
 230       { "glIndexPointer", (GLfunction) glIndexPointer },
 231       { "glTexCoordPointer", (GLfunction) glTexCoordPointer },
 232       { "glEdgeFlagPointer", (GLfunction) glEdgeFlagPointer },
 233       { "glGetPointerv", (GLfunction) glGetPointerv },
 234       { "glArrayElement", (GLfunction) glArrayElement },
 235       { "glDrawArrays", (GLfunction) glDrawArrays },
 236       { "glDrawElements", (GLfunction) glDrawElements },
 237       { "glInterleavedArrays", (GLfunction) glInterleavedArrays },
 238       { "glGenTextures", (GLfunction) glGenTextures },
 239       { "glDeleteTextures", (GLfunction) glDeleteTextures },
 240       { "glBindTexture", (GLfunction) glBindTexture },
 241       { "glPrioritizeTextures", (GLfunction) glPrioritizeTextures },
 242       { "glAreTexturesResident", (GLfunction) glAreTexturesResident },
 243       { "glIsTexture", (GLfunction) glIsTexture },
 244       { "glTexSubImage1D", (GLfunction) glTexSubImage1D },
 245       { "glTexSubImage2D", (GLfunction) glTexSubImage2D },
 246       { "glCopyTexImage1D", (GLfunction) glCopyTexImage1D },
 247       { "glCopyTexImage2D", (GLfunction) glCopyTexImage2D },
 248       { "glCopyTexSubImage1D", (GLfunction) glCopyTexSubImage1D },
 249       { "glCopyTexSubImage2D", (GLfunction) glCopyTexSubImage2D },
 250
 251       /* OpenGL 1.2 functions */
 252       { "glDrawRangeElements", (GLfunction) glDrawRangeElements },
 253       { "glTexImage3D", (GLfunction) glTexImage3D },
 254       { "glTexSubImage3D", (GLfunction) glTexSubImage3D },
 255       { "glCopyTexSubImage3D", (GLfunction) glCopyTexSubImage3D },
 256       /* NOTE: 1.2 imaging subset functions not implemented in Mesa */
 257
 258       /* GL_EXT_blend_minmax */
 259       { "glBlendEquationEXT", (GLfunction) glBlendEquationEXT },
 260
 261       /* GL_EXT_blend_color */
 262       { "glBlendColorEXT", (GLfunction) glBlendColorEXT },
 263
 264       /* GL_EXT_polygon_offset */
 265       { "glPolygonOffsetEXT", (GLfunction) glPolygonOffsetEXT },
 266
 267       /* GL_EXT_vertex_arrays */
 268       { "glVertexPointerEXT", (GLfunction) glVertexPointerEXT },
 269       { "glNormalPointerEXT", (GLfunction) glNormalPointerEXT },
 270       { "glColorPointerEXT", (GLfunction) glColorPointerEXT },
 271       { "glIndexPointerEXT", (GLfunction) glIndexPointerEXT },
 272       { "glTexCoordPointerEXT", (GLfunction) glTexCoordPointerEXT },
 273       { "glEdgeFlagPointerEXT", (GLfunction) glEdgeFlagPointerEXT },
 274       { "glGetPointervEXT", (GLfunction) glGetPointervEXT },
 275       { "glArrayElementEXT", (GLfunction) glArrayElementEXT },
 276       { "glDrawArraysEXT", (GLfunction) glDrawArraysEXT },
 277
 278       /* GL_EXT_texture_object */
 279       { "glGenTexturesEXT", (GLfunction) glGenTexturesEXT },
 280       { "glDeleteTexturesEXT", (GLfunction) glDeleteTexturesEXT },
 281       { "glBindTextureEXT", (GLfunction) glBindTextureEXT },
 282       { "glPrioritizeTexturesEXT", (GLfunction) glPrioritizeTexturesEXT },
 283       { "glAreTexturesResidentEXT", (GLfunction) glAreTexturesResidentEXT },
 284       { "glIsTextureEXT", (GLfunction) glIsTextureEXT },
 285
 286       /* GL_EXT_texture3D */
 287       { "glTexImage3DEXT", (GLfunction) glTexImage3DEXT },
 288       { "glTexSubImage3DEXT", (GLfunction) glTexSubImage3DEXT },
 289       { "glCopyTexSubImage3DEXT", (GLfunction) glCopyTexSubImage3DEXT },
 290
 291       /* GL_EXT_color_table */
 292       { "glColorTableEXT", (GLfunction) glColorTableEXT },
 293       { "glColorSubTableEXT", (GLfunction) glColorSubTableEXT },
 294       { "glGetColorTableEXT", (GLfunction) glGetColorTableEXT },
 295       { "glGetColorTableParameterfvEXT", (GLfunction) glGetColorTableParameterfvEXT },
 296       { "glGetColorTableParameterivEXT", (GLfunction) glGetColorTableParameterivEXT },
 297
 298       /* GL_ARB_multitexture */
 299       { "glActiveTextureARB", (GLfunction) glActiveTextureARB },
 300       { "glClientActiveTextureARB", (GLfunction) glClientActiveTextureARB },
 301       { "glMultiTexCoord1dARB", (GLfunction) glMultiTexCoord1dARB },
 302       { "glMultiTexCoord1dvARB", (GLfunction) glMultiTexCoord1dvARB },
 303       { "glMultiTexCoord1fARB", (GLfunction) glMultiTexCoord1fARB },
 304       { "glMultiTexCoord1fvARB", (GLfunction) glMultiTexCoord1fvARB },
 305       { "glMultiTexCoord1iARB", (GLfunction) glMultiTexCoord1iARB },
 306       { "glMultiTexCoord1ivARB", (GLfunction) glMultiTexCoord1ivARB },
 307       { "glMultiTexCoord1sARB", (GLfunction) glMultiTexCoord1sARB },
 308       { "glMultiTexCoord1svARB", (GLfunction) glMultiTexCoord1svARB },
 309       { "glMultiTexCoord2dARB", (GLfunction) glMultiTexCoord2dARB },
 310       { "glMultiTexCoord2dvARB", (GLfunction) glMultiTexCoord2dvARB },
 311       { "glMultiTexCoord2fARB", (GLfunction) glMultiTexCoord2fARB },
 312       { "glMultiTexCoord2fvARB", (GLfunction) glMultiTexCoord2fvARB },
 313       { "glMultiTexCoord2iARB", (GLfunction) glMultiTexCoord2iARB },
 314       { "glMultiTexCoord2ivARB", (GLfunction) glMultiTexCoord2ivARB },
 315       { "glMultiTexCoord2sARB", (GLfunction) glMultiTexCoord2sARB },
 316       { "glMultiTexCoord2svARB", (GLfunction) glMultiTexCoord2svARB },
 317       { "glMultiTexCoord3dARB", (GLfunction) glMultiTexCoord3dARB },
 318       { "glMultiTexCoord3dvARB", (GLfunction) glMultiTexCoord3dvARB },
 319       { "glMultiTexCoord3fARB", (GLfunction) glMultiTexCoord3fARB },
 320       { "glMultiTexCoord3fvARB", (GLfunction) glMultiTexCoord3fvARB },
 321       { "glMultiTexCoord3iARB", (GLfunction) glMultiTexCoord3iARB },
 322       { "glMultiTexCoord3ivARB", (GLfunction) glMultiTexCoord3ivARB },
 323       { "glMultiTexCoord3sARB", (GLfunction) glMultiTexCoord3sARB },
 324       { "glMultiTexCoord3svARB", (GLfunction) glMultiTexCoord3svARB },
 325       { "glMultiTexCoord4dARB", (GLfunction) glMultiTexCoord4dARB },
 326       { "glMultiTexCoord4dvARB", (GLfunction) glMultiTexCoord4dvARB },
 327       { "glMultiTexCoord4fARB", (GLfunction) glMultiTexCoord4fARB },
 328       { "glMultiTexCoord4fvARB", (GLfunction) glMultiTexCoord4fvARB },
 329       { "glMultiTexCoord4iARB", (GLfunction) glMultiTexCoord4iARB },
 330       { "glMultiTexCoord4ivARB", (GLfunction) glMultiTexCoord4ivARB },
 331       { "glMultiTexCoord4sARB", (GLfunction) glMultiTexCoord4sARB },
 332       { "glMultiTexCoord4svARB", (GLfunction) glMultiTexCoord4svARB },
 333
 334       /* GL_EXT_point_parameters */
 335       { "glPointParameterfEXT", (GLfunction) glPointParameterfEXT },
 336       { "glPointParameterfvEXT", (GLfunction) glPointParameterfvEXT },
 337
 338       /* GL_INGR_blend_func_separate */
 339       { "glBlendFuncSeparateINGR", (GLfunction) glBlendFuncSeparateINGR },
 340
 341       /* GL_MESA_window_pos */
 342       { "glWindowPos2iMESA", (GLfunction) glWindowPos2iMESA },
 343       { "glWindowPos2sMESA", (GLfunction) glWindowPos2sMESA },
 344       { "glWindowPos2fMESA", (GLfunction) glWindowPos2fMESA },
 345       { "glWindowPos2dMESA", (GLfunction) glWindowPos2dMESA },
 346       { "glWindowPos2ivMESA", (GLfunction) glWindowPos2ivMESA },
 347       { "glWindowPos2svMESA", (GLfunction) glWindowPos2svMESA },
 348       { "glWindowPos2fvMESA", (GLfunction) glWindowPos2fvMESA },
 349       { "glWindowPos2dvMESA", (GLfunction) glWindowPos2dvMESA },
 350       { "glWindowPos3iMESA", (GLfunction) glWindowPos3iMESA },
 351       { "glWindowPos3sMESA", (GLfunction) glWindowPos3sMESA },
 352       { "glWindowPos3fMESA", (GLfunction) glWindowPos3fMESA },
 353       { "glWindowPos3dMESA", (GLfunction) glWindowPos3dMESA },
 354       { "glWindowPos3ivMESA", (GLfunction) glWindowPos3ivMESA },
 355       { "glWindowPos3svMESA", (GLfunction) glWindowPos3svMESA },
 356       { "glWindowPos3fvMESA", (GLfunction) glWindowPos3fvMESA },
 357       { "glWindowPos3dvMESA", (GLfunction) glWindowPos3dvMESA },
 358       { "glWindowPos4iMESA", (GLfunction) glWindowPos4iMESA },
 359       { "glWindowPos4sMESA", (GLfunction) glWindowPos4sMESA },
 360       { "glWindowPos4fMESA", (GLfunction) glWindowPos4fMESA },
 361       { "glWindowPos4dMESA", (GLfunction) glWindowPos4dMESA },
 362       { "glWindowPos4ivMESA", (GLfunction) glWindowPos4ivMESA },
 363       { "glWindowPos4svMESA", (GLfunction) glWindowPos4svMESA },
 364       { "glWindowPos4fvMESA", (GLfunction) glWindowPos4fvMESA },
 365       { "glWindowPos4dvMESA", (GLfunction) glWindowPos4dvMESA },
 366
 367       /* GL_MESA_resize_buffers */
 368       { "glResizeBuffersMESA", (GLfunction) glResizeBuffersMESA },
 369
 370       /* GL_EXT_compiled_vertex_array */
 371       { "glLockArraysEXT", (GLfunction) glLockArraysEXT },
 372       { "glUnlockArraysEXT", (GLfunction) glUnlockArraysEXT },
 373
 374       { NULL, NULL } /* end of list token */
 375    };
 376    GLuint i;
 377
 378    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, "glGetProcAddressEXT", NULL);
 379
 380    for (i = 0; procTable[i].address; i++) {
 381       if (strcmp((const char *) procName, procTable[i].name) == 0)
 382          return procTable[i].address;
 383    }
 384
 385    return NULL;
 386 }