src/mesa/main/dd.h

   1 /**
   2  * \file dd.h
   3  * Device driver interfaces.
   4  */
   5
   6 /*
   7  * Mesa 3-D graphics library
   8  * Version:  6.3
   9  *
  10  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
  11  *
  12  * Permission is hereby granted, free of charge, to any person obtaining a
  13  * copy of this software and associated documentation files (the "Software"),
  14  * to deal in the Software without restriction, including without limitation
  15  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  16  * and/or sell copies of the Software, and to permit persons to whom the
  17  * Software is furnished to do so, subject to the following conditions:
  18  *
  19  * The above copyright notice and this permission notice shall be included
  20  * in all copies or substantial portions of the Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  23  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  26  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  27  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28  */
  29
  30
  31 #ifndef DD_INCLUDED
  32 #define DD_INCLUDED
  33
  34 /* THIS FILE ONLY INCLUDED BY mtypes.h !!!!! */
  35
  36 struct gl_pixelstore_attrib;
  37 struct mesa_display_list;
  38
  39 /**
  40  * Device driver function table.
  41  * Core Mesa uses these function pointers to call into device drivers.
  42  * Most of these functions directly correspond to OpenGL state commands.
  43  * Core Mesa will call these functions after error checking has been done
  44  * so that the drivers don't have to worry about error testing.
  45  *
  46  * Vertex transformation/clipping/lighting is patched into the T&L module.
  47  * Rasterization functions are patched into the swrast module.
  48  *
  49  * Note: when new functions are added here, the drivers/common/driverfuncs.c
  50  * file should be updated too!!!
  51  */
  52 struct dd_function_table {
  53    /**
  54     * Return a string as needed by glGetString().
  55     *
  56     * Only the GL_RENDERER token must be implemented.  Otherwise, NULL can be
  57     * returned.
  58     */
  59    const GLubyte * (*GetString)( GLcontext *ctx, GLenum name );
  60
  61    /**
  62     * Notify the driver after Mesa has made some internal state changes.
  63     *
  64     * This is in addition to any state change callbacks Mesa may already have
  65     * made.
  66     */
  67    void (*UpdateState)( GLcontext *ctx, GLuint new_state );
  68
  69    /**
  70     * Get the width and height of the named buffer/window.
  71     *
  72     * Mesa uses this to determine when the driver's window size has changed.
  73     */
  74    void (*GetBufferSize)( GLframebuffer *buffer,
  75                           GLuint *width, GLuint *height );
  76
  77    /**
  78     * Resize the given framebuffer to the given size.
  79     */
  80    void (*ResizeBuffers)( GLcontext *ctx, GLframebuffer *fb,
  81                           GLuint width, GLuint height);
  82
  83    /**
  84     * Called whenever an error is generated.
  85     *
  86     * __GLcontextRec::ErrorValue contains the error value.
  87     */
  88    void (*Error)( GLcontext *ctx );
  89
  90    /**
  91     * This is called whenever glFinish() is called.
  92     */
  93    void (*Finish)( GLcontext *ctx );
  94
  95    /**
  96     * This is called whenever glFlush() is called.
  97     */
  98    void (*Flush)( GLcontext *ctx );
  99
 100    /**
 101     * Clear the color/depth/stencil/accum buffer(s).
 102     *
 103     * \param mask a bitmask of the DD_*_BIT values defined above that indicates
 104     * which buffers need to be cleared.
 105     * \param all if true then clear the whole buffer, else clear only the
 106     * region defined by <tt>(x, y, width, height)</tt>.
 107     *
 108     * This function must obey the glColorMask(), glIndexMask() and
 109     * glStencilMask() settings!
 110     * Software Mesa can do masked clears if the device driver can't.
 111     */
 112    void (*Clear)( GLcontext *ctx, GLbitfield mask, GLboolean all,
 113                   GLint x, GLint y, GLint width, GLint height );
 114
 115
 116    /**
 117     * \name For hardware accumulation buffer
 118     */
 119    /*@{*/
 120    /**
 121     * Execute glAccum command within the given scissor region.
 122     */
 123    void (*Accum)( GLcontext *ctx, GLenum op, GLfloat value,
 124                   GLint xpos, GLint ypos, GLint width, GLint height );
 125    /*@}*/
 126
 127
 128    /**
 129     * \name glDraw(), glRead(), glCopyPixels() and glBitmap() functions
 130     */
 131    /*@{*/
 132
 133    /**
 134     * This is called by glDrawPixels().
 135     *
 136     * \p unpack describes how to unpack the source image data.
 137     */
 138    void (*DrawPixels)( GLcontext *ctx,
 139                        GLint x, GLint y, GLsizei width, GLsizei height,
 140                        GLenum format, GLenum type,
 141                        const struct gl_pixelstore_attrib *unpack,
 142                        const GLvoid *pixels );
 143
 144    /**
 145     * Called by glReadPixels().
 146     */
 147    void (*ReadPixels)( GLcontext *ctx,
 148                        GLint x, GLint y, GLsizei width, GLsizei height,
 149                        GLenum format, GLenum type,
 150                        const struct gl_pixelstore_attrib *unpack,
 151                        GLvoid *dest );
 152
 153    /**
 154     * Do a glCopyPixels().
 155     *
 156     * This function must respect all rasterization state, glPixelTransfer(),
 157     * glPixelZoom(), etc.
 158     */
 159    void (*CopyPixels)( GLcontext *ctx, GLint srcx, GLint srcy,
 160                        GLsizei width, GLsizei height,
 161                        GLint dstx, GLint dsty, GLenum type );
 162
 163    /**
 164     * This is called by glBitmap().
 165     *
 166     * Works the same as dd_function_table::DrawPixels, above.
 167     */
 168    void (*Bitmap)( GLcontext *ctx,
 169                    GLint x, GLint y, GLsizei width, GLsizei height,
 170                    const struct gl_pixelstore_attrib *unpack,
 171                    const GLubyte *bitmap );
 172    /*@}*/
 173
 174
 175    /**
 176     * \name Texture image functions
 177     */
 178    /*@{*/
 179
 180    /**
 181     * Choose texture format.
 182     *
 183     * This is called by the \c _mesa_store_tex[sub]image[123]d() fallback
 184     * functions.  The driver should examine \p internalFormat and return a
 185     * pointer to an appropriate gl_texture_format.
 186     */
 187    const struct gl_texture_format *(*ChooseTextureFormat)( GLcontext *ctx,
 188                       GLint internalFormat, GLenum srcFormat, GLenum srcType );
 189
 190    /**
 191     * Called by glTexImage1D().
 192     *
 193     * \param target user specified.
 194     * \param format user specified.
 195     * \param type user specified.
 196     * \param pixels user specified.
 197     * \param packing indicates the image packing of pixels.
 198     * \param texObj is the target texture object.
 199     * \param texImage is the target texture image.  It will have the texture \p
 200     * width, \p height, \p depth, \p border and \p internalFormat information.
 201     *
 202     * \p retainInternalCopy is returned by this function and indicates whether
 203     * core Mesa should keep an internal copy of the texture image.
 204     *
 205     * Drivers should call a fallback routine from texstore.c if needed.
 206     */
 207    void (*TexImage1D)( GLcontext *ctx, GLenum target, GLint level,
 208                        GLint internalFormat,
 209                        GLint width, GLint border,
 210                        GLenum format, GLenum type, const GLvoid *pixels,
 211                        const struct gl_pixelstore_attrib *packing,
 212                        struct gl_texture_object *texObj,
 213                        struct gl_texture_image *texImage );
 214
 215    /**
 216     * Called by glTexImage2D().
 217     *
 218     * \sa dd_function_table::TexImage1D.
 219     */
 220    void (*TexImage2D)( GLcontext *ctx, GLenum target, GLint level,
 221                        GLint internalFormat,
 222                        GLint width, GLint height, GLint border,
 223                        GLenum format, GLenum type, const GLvoid *pixels,
 224                        const struct gl_pixelstore_attrib *packing,
 225                        struct gl_texture_object *texObj,
 226                        struct gl_texture_image *texImage );
 227
 228    /**
 229     * Called by glTexImage3D().
 230     *
 231     * \sa dd_function_table::TexImage1D.
 232     */
 233    void (*TexImage3D)( GLcontext *ctx, GLenum target, GLint level,
 234                        GLint internalFormat,
 235                        GLint width, GLint height, GLint depth, GLint border,
 236                        GLenum format, GLenum type, const GLvoid *pixels,
 237                        const struct gl_pixelstore_attrib *packing,
 238                        struct gl_texture_object *texObj,
 239                        struct gl_texture_image *texImage );
 240
 241    /**
 242     * Called by glTexSubImage1D().
 243     *
 244     * \param target user specified.
 245     * \param level user specified.
 246     * \param xoffset user specified.
 247     * \param yoffset user specified.
 248     * \param zoffset user specified.
 249     * \param width user specified.
 250     * \param height user specified.
 251     * \param depth user specified.
 252     * \param format user specified.
 253     * \param type user specified.
 254     * \param pixels user specified.
 255     * \param packing indicates the image packing of pixels.
 256     * \param texObj is the target texture object.
 257     * \param texImage is the target texture image.  It will have the texture \p
 258     * width, \p height, \p border and \p internalFormat information.
 259     *
 260     * The driver should use a fallback routine from texstore.c if needed.
 261     */
 262    void (*TexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
 263                           GLint xoffset, GLsizei width,
 264                           GLenum format, GLenum type,
 265                           const GLvoid *pixels,
 266                           const struct gl_pixelstore_attrib *packing,
 267                           struct gl_texture_object *texObj,
 268                           struct gl_texture_image *texImage );
 269
 270    /**
 271     * Called by glTexSubImage2D().
 272     *
 273     * \sa dd_function_table::TexSubImage1D.
 274     */
 275    void (*TexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
 276                           GLint xoffset, GLint yoffset,
 277                           GLsizei width, GLsizei height,
 278                           GLenum format, GLenum type,
 279                           const GLvoid *pixels,
 280                           const struct gl_pixelstore_attrib *packing,
 281                           struct gl_texture_object *texObj,
 282                           struct gl_texture_image *texImage );
 283
 284    /**
 285     * Called by glTexSubImage3D().
 286     *
 287     * \sa dd_function_table::TexSubImage1D.
 288     */
 289    void (*TexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
 290                           GLint xoffset, GLint yoffset, GLint zoffset,
 291                           GLsizei width, GLsizei height, GLint depth,
 292                           GLenum format, GLenum type,
 293                           const GLvoid *pixels,
 294                           const struct gl_pixelstore_attrib *packing,
 295                           struct gl_texture_object *texObj,
 296                           struct gl_texture_image *texImage );
 297
 298    /**
 299     * Called by glGetTexImage().
 300     */
 301    void (*GetTexImage)( GLcontext *ctx, GLenum target, GLint level,
 302                         GLenum format, GLenum type, GLvoid *pixels,
 303                         const struct gl_texture_object *texObj,
 304                         const struct gl_texture_image *texImage );
 305
 306    /**
 307     * Called by glCopyTexImage1D().
 308     *
 309     * Drivers should use a fallback routine from texstore.c if needed.
 310     */
 311    void (*CopyTexImage1D)( GLcontext *ctx, GLenum target, GLint level,
 312                            GLenum internalFormat, GLint x, GLint y,
 313                            GLsizei width, GLint border );
 314
 315    /**
 316     * Called by glCopyTexImage2D().
 317     *
 318     * Drivers should use a fallback routine from texstore.c if needed.
 319     */
 320    void (*CopyTexImage2D)( GLcontext *ctx, GLenum target, GLint level,
 321                            GLenum internalFormat, GLint x, GLint y,
 322                            GLsizei width, GLsizei height, GLint border );
 323
 324    /**
 325     * Called by glCopyTexSubImage1D().
 326     *
 327     * Drivers should use a fallback routine from texstore.c if needed.
 328     */
 329    void (*CopyTexSubImage1D)( GLcontext *ctx, GLenum target, GLint level,
 330                               GLint xoffset,
 331                               GLint x, GLint y, GLsizei width );
 332    /**
 333     * Called by glCopyTexSubImage2D().
 334     *
 335     * Drivers should use a fallback routine from texstore.c if needed.
 336     */
 337    void (*CopyTexSubImage2D)( GLcontext *ctx, GLenum target, GLint level,
 338                               GLint xoffset, GLint yoffset,
 339                               GLint x, GLint y,
 340                               GLsizei width, GLsizei height );
 341    /**
 342     * Called by glCopyTexSubImage3D().
 343     *
 344     * Drivers should use a fallback routine from texstore.c if needed.
 345     */
 346    void (*CopyTexSubImage3D)( GLcontext *ctx, GLenum target, GLint level,
 347                               GLint xoffset, GLint yoffset, GLint zoffset,
 348                               GLint x, GLint y,
 349                               GLsizei width, GLsizei height );
 350
 351    /**
 352     * Called by glTexImage[123]D when user specifies a proxy texture
 353     * target.
 354     *
 355     * \return GL_TRUE if the proxy test passes, or GL_FALSE if the test fails.
 356     */
 357    GLboolean (*TestProxyTexImage)(GLcontext *ctx, GLenum target,
 358                                   GLint level, GLint internalFormat,
 359                                   GLenum format, GLenum type,
 360                                   GLint width, GLint height,
 361                                   GLint depth, GLint border);
 362    /*@}*/
 363
 364
 365    /**
 366     * \name Compressed texture functions
 367     */
 368    /*@{*/
 369
 370    /**
 371     * Called by glCompressedTexImage1D().
 372     *
 373     * \param target user specified.
 374     * \param format user specified.
 375     * \param type user specified.
 376     * \param pixels user specified.
 377     * \param packing indicates the image packing of pixels.
 378     * \param texObj is the target texture object.
 379     * \param texImage is the target texture image.  It will have the texture \p
 380     * width, \p height, \p depth, \p border and \p internalFormat information.
 381     *
 382     * \a retainInternalCopy is returned by this function and indicates whether
 383     * core Mesa should keep an internal copy of the texture image.
 384     */
 385    void (*CompressedTexImage1D)( GLcontext *ctx, GLenum target,
 386                                  GLint level, GLint internalFormat,
 387                                  GLsizei width, GLint border,
 388                                  GLsizei imageSize, const GLvoid *data,
 389                                  struct gl_texture_object *texObj,
 390                                  struct gl_texture_image *texImage );
 391    /**
 392     * Called by glCompressedTexImage2D().
 393     *
 394     * \sa dd_function_table::CompressedTexImage1D.
 395     */
 396    void (*CompressedTexImage2D)( GLcontext *ctx, GLenum target,
 397                                  GLint level, GLint internalFormat,
 398                                  GLsizei width, GLsizei height, GLint border,
 399                                  GLsizei imageSize, const GLvoid *data,
 400                                  struct gl_texture_object *texObj,
 401                                  struct gl_texture_image *texImage );
 402    /**
 403     * Called by glCompressedTexImage3D().
 404     *
 405     * \sa dd_function_table::CompressedTexImage3D.
 406     */
 407    void (*CompressedTexImage3D)( GLcontext *ctx, GLenum target,
 408                                  GLint level, GLint internalFormat,
 409                                  GLsizei width, GLsizei height, GLsizei depth,
 410                                  GLint border,
 411                                  GLsizei imageSize, const GLvoid *data,
 412                                  struct gl_texture_object *texObj,
 413                                  struct gl_texture_image *texImage );
 414
 415    /**
 416     * Called by glCompressedTexSubImage1D().
 417     *
 418     * \param target user specified.
 419     * \param level user specified.
 420     * \param xoffset user specified.
 421     * \param yoffset user specified.
 422     * \param zoffset user specified.
 423     * \param width user specified.
 424     * \param height user specified.
 425     * \param depth user specified.
 426     * \param imageSize user specified.
 427     * \param data user specified.
 428     * \param texObj is the target texture object.
 429     * \param texImage is the target texture image.  It will have the texture \p
 430     * width, \p height, \p depth, \p border and \p internalFormat information.
 431     */
 432    void (*CompressedTexSubImage1D)(GLcontext *ctx, GLenum target, GLint level,
 433                                    GLint xoffset, GLsizei width,
 434                                    GLenum format,
 435                                    GLsizei imageSize, const GLvoid *data,
 436                                    struct gl_texture_object *texObj,
 437                                    struct gl_texture_image *texImage);
 438    /**
 439     * Called by glCompressedTexSubImage2D().
 440     *
 441     * \sa dd_function_table::CompressedTexImage3D.
 442     */
 443    void (*CompressedTexSubImage2D)(GLcontext *ctx, GLenum target, GLint level,
 444                                    GLint xoffset, GLint yoffset,
 445                                    GLsizei width, GLint height,
 446                                    GLenum format,
 447                                    GLsizei imageSize, const GLvoid *data,
 448                                    struct gl_texture_object *texObj,
 449                                    struct gl_texture_image *texImage);
 450    /**
 451     * Called by glCompressedTexSubImage3D().
 452     *
 453     * \sa dd_function_table::CompressedTexImage3D.
 454     */
 455    void (*CompressedTexSubImage3D)(GLcontext *ctx, GLenum target, GLint level,
 456                                    GLint xoffset, GLint yoffset, GLint zoffset,
 457                                    GLsizei width, GLint height, GLint depth,
 458                                    GLenum format,
 459                                    GLsizei imageSize, const GLvoid *data,
 460                                    struct gl_texture_object *texObj,
 461                                    struct gl_texture_image *texImage);
 462
 463
 464    /**
 465     * Called by glGetCompressedTexImage.
 466     */
 467    void (*GetCompressedTexImage)(GLcontext *ctx, GLenum target, GLint level,
 468                                  GLvoid *img,
 469                                  const struct gl_texture_object *texObj,
 470                                  const struct gl_texture_image *texImage);
 471
 472    /**
 473     * Called to query number of bytes of storage needed to store the
 474     * specified compressed texture.
 475     */
 476    GLuint (*CompressedTextureSize)( GLcontext *ctx, GLsizei width,
 477                                     GLsizei height, GLsizei depth,
 478                                     GLenum format );
 479    /*@}*/
 480
 481    /**
 482     * \name Texture object functions
 483     */
 484    /*@{*/
 485
 486    /**
 487     * Called by glBindTexture().
 488     */
 489    void (*BindTexture)( GLcontext *ctx, GLenum target,
 490                         struct gl_texture_object *tObj );
 491
 492    /**
 493     * Called to allocate a new texture object.
 494     * A new gl_texture_object should be returned.  The driver should
 495     * attach to it any device-specific info it needs.
 496     */
 497    struct gl_texture_object * (*NewTextureObject)( GLcontext *ctx, GLuint name,
 498                                                    GLenum target );
 499    /**
 500     * Called when a texture object is about to be deallocated.
 501     *
 502     * Driver should delete the gl_texture_object object and anything
 503     * hanging off of it.
 504     */
 505    void (*DeleteTexture)( GLcontext *ctx, struct gl_texture_object *tObj );
 506
 507    /**
 508     * Called to allocate a new texture image object.
 509     */
 510    struct gl_texture_image * (*NewTextureImage)( GLcontext *ctx );
 511
 512    /**
 513     * Called to free tImage->Data.
 514     */
 515    void (*FreeTexImageData)( GLcontext *ctx, struct gl_texture_image *tImage );
 516
 517    /**
 518     * Called by glAreTextureResident().
 519     */
 520    GLboolean (*IsTextureResident)( GLcontext *ctx,
 521                                    struct gl_texture_object *t );
 522
 523    /**
 524     * Called by glPrioritizeTextures().
 525     */
 526    void (*PrioritizeTexture)( GLcontext *ctx,  struct gl_texture_object *t,
 527                               GLclampf priority );
 528
 529    /**
 530     * Called by glActiveTextureARB() to set current texture unit.
 531     */
 532    void (*ActiveTexture)( GLcontext *ctx, GLuint texUnitNumber );
 533
 534    /**
 535     * Called when the texture's color lookup table is changed.
 536     *
 537     * If \p tObj is NULL then the shared texture palette
 538     * gl_texture_object::Palette is to be updated.
 539     */
 540    void (*UpdateTexturePalette)( GLcontext *ctx,
 541                                  struct gl_texture_object *tObj );
 542    /*@}*/
 543
 544
 545    /**
 546     * \name Imaging functionality
 547     */
 548    /*@{*/
 549    void (*CopyColorTable)( GLcontext *ctx,
 550                            GLenum target, GLenum internalformat,
 551                            GLint x, GLint y, GLsizei width );
 552
 553    void (*CopyColorSubTable)( GLcontext *ctx,
 554                               GLenum target, GLsizei start,
 555                               GLint x, GLint y, GLsizei width );
 556
 557    void (*CopyConvolutionFilter1D)( GLcontext *ctx, GLenum target,
 558                                     GLenum internalFormat,
 559                                     GLint x, GLint y, GLsizei width );
 560
 561    void (*CopyConvolutionFilter2D)( GLcontext *ctx, GLenum target,
 562                                     GLenum internalFormat,
 563                                     GLint x, GLint y,
 564                                     GLsizei width, GLsizei height );
 565    /*@}*/
 566
 567
 568    /**
 569     * \name Vertex/fragment program functions
 570     */
 571    /*@{*/
 572    /** Bind a vertex/fragment program */
 573    void (*BindProgram)(GLcontext *ctx, GLenum target, struct program *prog);
 574    /** Allocate a new program */
 575    struct program * (*NewProgram)(GLcontext *ctx, GLenum target, GLuint id);
 576    /** Delete a program */
 577    void (*DeleteProgram)(GLcontext *ctx, struct program *prog);
 578    /** Notify driver that a program string has been specified. */
 579    void (*ProgramStringNotify)(GLcontext *ctx, GLenum target,
 580                                struct program *prog);
 581
 582
 583
 584    /** Query if program can be loaded onto hardware */
 585    GLboolean (*IsProgramNative)(GLcontext *ctx, GLenum target,
 586                                 struct program *prog);
 587
 588    /*@}*/
 589
 590
 591    /**
 592     * \name State-changing functions.
 593     *
 594     * \note drawing functions are above.
 595     *
 596     * These functions are called by their corresponding OpenGL API functions.
 597     * They are \e also called by the gl_PopAttrib() function!!!
 598     * May add more functions like these to the device driver in the future.
 599     */
 600    /*@{*/
 601    /** Specify the alpha test function */
 602    void (*AlphaFunc)(GLcontext *ctx, GLenum func, GLfloat ref);
 603    /** Set the blend color */
 604    void (*BlendColor)(GLcontext *ctx, const GLfloat color[4]);
 605    /** Set the blend equation */
 606    void (*BlendEquationSeparate)(GLcontext *ctx, GLenum modeRGB, GLenum modeA);
 607    /** Specify pixel arithmetic */
 608    void (*BlendFuncSeparate)(GLcontext *ctx,
 609                              GLenum sfactorRGB, GLenum dfactorRGB,
 610                              GLenum sfactorA, GLenum dfactorA);
 611    /** Specify clear values for the color buffers */
 612    void (*ClearColor)(GLcontext *ctx, const GLfloat color[4]);
 613    /** Specify the clear value for the depth buffer */
 614    void (*ClearDepth)(GLcontext *ctx, GLclampd d);
 615    /** Specify the clear value for the color index buffers */
 616    void (*ClearIndex)(GLcontext *ctx, GLuint index);
 617    /** Specify the clear value for the stencil buffer */
 618    void (*ClearStencil)(GLcontext *ctx, GLint s);
 619    /** Specify a plane against which all geometry is clipped */
 620    void (*ClipPlane)(GLcontext *ctx, GLenum plane, const GLfloat *equation );
 621    /** Enable and disable writing of frame buffer color components */
 622    void (*ColorMask)(GLcontext *ctx, GLboolean rmask, GLboolean gmask,
 623                      GLboolean bmask, GLboolean amask );
 624    /** Cause a material color to track the current color */
 625    void (*ColorMaterial)(GLcontext *ctx, GLenum face, GLenum mode);
 626    /** Specify whether front- or back-facing facets can be culled */
 627    void (*CullFace)(GLcontext *ctx, GLenum mode);
 628    /** Define front- and back-facing polygons */
 629    void (*FrontFace)(GLcontext *ctx, GLenum mode);
 630    /** Specify the value used for depth buffer comparisons */
 631    void (*DepthFunc)(GLcontext *ctx, GLenum func);
 632    /** Enable or disable writing into the depth buffer */
 633    void (*DepthMask)(GLcontext *ctx, GLboolean flag);
 634    /** Specify mapping of depth values from NDC to window coordinates */
 635    void (*DepthRange)(GLcontext *ctx, GLclampd nearval, GLclampd farval);
 636    /** Specify the current buffer for writing */
 637    void (*DrawBuffer)( GLcontext *ctx, GLenum buffer );
 638    /** Specify the buffers for writing for fragment programs*/
 639    void (*DrawBuffers)( GLcontext *ctx, GLsizei n, const GLenum *buffers );
 640    /** Enable or disable server-side gl capabilities */
 641    void (*Enable)(GLcontext *ctx, GLenum cap, GLboolean state);
 642    /** Specify fog parameters */
 643    void (*Fogfv)(GLcontext *ctx, GLenum pname, const GLfloat *params);
 644    /** Specify implementation-specific hints */
 645    void (*Hint)(GLcontext *ctx, GLenum target, GLenum mode);
 646    /** Control the writing of individual bits in the color index buffers */
 647    void (*IndexMask)(GLcontext *ctx, GLuint mask);
 648    /** Set light source parameters */
 649    void (*Lightfv)(GLcontext *ctx, GLenum light,
 650                    GLenum pname, const GLfloat *params );
 651    /** Set the lighting model parameters */
 652    void (*LightModelfv)(GLcontext *ctx, GLenum pname, const GLfloat *params);
 653    /** Specify the line stipple pattern */
 654    void (*LineStipple)(GLcontext *ctx, GLint factor, GLushort pattern );
 655    /** Specify the width of rasterized lines */
 656    void (*LineWidth)(GLcontext *ctx, GLfloat width);
 657    /** Specify a logical pixel operation for color index rendering */
 658    void (*LogicOpcode)(GLcontext *ctx, GLenum opcode);
 659    void (*PointParameterfv)(GLcontext *ctx, GLenum pname,
 660                             const GLfloat *params);
 661    /** Specify the diameter of rasterized points */
 662    void (*PointSize)(GLcontext *ctx, GLfloat size);
 663    /** Select a polygon rasterization mode */
 664    void (*PolygonMode)(GLcontext *ctx, GLenum face, GLenum mode);
 665    /** Set the scale and units used to calculate depth values */
 666    void (*PolygonOffset)(GLcontext *ctx, GLfloat factor, GLfloat units);
 667    /** Set the polygon stippling pattern */
 668    void (*PolygonStipple)(GLcontext *ctx, const GLubyte *mask );
 669    /* Specifies the current buffer for reading */
 670    void (*ReadBuffer)( GLcontext *ctx, GLenum buffer );
 671    /** Set rasterization mode */
 672    void (*RenderMode)(GLcontext *ctx, GLenum mode );
 673    /** Define the scissor box */
 674    void (*Scissor)(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
 675    /** Select flat or smooth shading */
 676    void (*ShadeModel)(GLcontext *ctx, GLenum mode);
 677    /** Set function and reference value for stencil testing */
 678    void (*StencilFunc)(GLcontext *ctx, GLenum func, GLint ref, GLuint mask);
 679    /** Control the writing of individual bits in the stencil planes */
 680    void (*StencilMask)(GLcontext *ctx, GLuint mask);
 681    /** Set stencil test actions */
 682    void (*StencilOp)(GLcontext *ctx, GLenum fail, GLenum zfail, GLenum zpass);
 683    /** Set active stencil face (GL_EXT_stencil_two_side) */
 684    void (*ActiveStencilFace)(GLcontext *ctx, GLuint face);
 685    /** OpenGL 2.0 two-sided StencilFunc */
 686    void (*StencilFuncSeparate)(GLcontext *ctx, GLenum face, GLenum func,
 687                                GLint ref, GLuint mask);
 688    /** OpenGL 2.0 two-sided StencilMask */
 689    void (*StencilMaskSeparate)(GLcontext *ctx, GLenum face, GLuint mask);
 690    /** OpenGL 2.0 two-sided StencilOp */
 691    void (*StencilOpSeparate)(GLcontext *ctx, GLenum face, GLenum fail,
 692                              GLenum zfail, GLenum zpass);
 693    /** Control the generation of texture coordinates */
 694    void (*TexGen)(GLcontext *ctx, GLenum coord, GLenum pname,
 695                   const GLfloat *params);
 696    /** Set texture environment parameters */
 697    void (*TexEnv)(GLcontext *ctx, GLenum target, GLenum pname,
 698                   const GLfloat *param);
 699    /** Set texture parameters */
 700    void (*TexParameter)(GLcontext *ctx, GLenum target,
 701                         struct gl_texture_object *texObj,
 702                         GLenum pname, const GLfloat *params);
 703    void (*TextureMatrix)(GLcontext *ctx, GLuint unit, const GLmatrix *mat);
 704    /** Set the viewport */
 705    void (*Viewport)(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
 706    /*@}*/
 707
 708
 709    /**
 710     * \name Vertex array functions
 711     *
 712     * Called by the corresponding OpenGL functions.
 713     */
 714    /*@{*/
 715    void (*VertexPointer)(GLcontext *ctx, GLint size, GLenum type,
 716                          GLsizei stride, const GLvoid *ptr);
 717    void (*NormalPointer)(GLcontext *ctx, GLenum type,
 718                          GLsizei stride, const GLvoid *ptr);
 719    void (*ColorPointer)(GLcontext *ctx, GLint size, GLenum type,
 720                         GLsizei stride, const GLvoid *ptr);
 721    void (*FogCoordPointer)(GLcontext *ctx, GLenum type,
 722                            GLsizei stride, const GLvoid *ptr);
 723    void (*IndexPointer)(GLcontext *ctx, GLenum type,
 724                         GLsizei stride, const GLvoid *ptr);
 725    void (*SecondaryColorPointer)(GLcontext *ctx, GLint size, GLenum type,
 726                                  GLsizei stride, const GLvoid *ptr);
 727    void (*TexCoordPointer)(GLcontext *ctx, GLint size, GLenum type,
 728                            GLsizei stride, const GLvoid *ptr);
 729    void (*EdgeFlagPointer)(GLcontext *ctx, GLsizei stride, const GLvoid *ptr);
 730    void (*VertexAttribPointer)(GLcontext *ctx, GLuint index, GLint size,
 731                                GLenum type, GLsizei stride, const GLvoid *ptr);
 732    void (*LockArraysEXT)( GLcontext *ctx, GLint first, GLsizei count );
 733    void (*UnlockArraysEXT)( GLcontext *ctx );
 734    /*@}*/
 735
 736
 737    /**
 738     * \name State-query functions
 739     *
 740     * Return GL_TRUE if query was completed, GL_FALSE otherwise.
 741     */
 742    /*@{*/
 743    /** Return the value or values of a selected parameter */
 744    GLboolean (*GetBooleanv)(GLcontext *ctx, GLenum pname, GLboolean *result);
 745    /** Return the value or values of a selected parameter */
 746    GLboolean (*GetDoublev)(GLcontext *ctx, GLenum pname, GLdouble *result);
 747    /** Return the value or values of a selected parameter */
 748    GLboolean (*GetFloatv)(GLcontext *ctx, GLenum pname, GLfloat *result);
 749    /** Return the value or values of a selected parameter */
 750    GLboolean (*GetIntegerv)(GLcontext *ctx, GLenum pname, GLint *result);
 751    /** Return the value or values of a selected parameter */
 752    GLboolean (*GetPointerv)(GLcontext *ctx, GLenum pname, GLvoid **result);
 753    /*@}*/
 754
 755
 756    /**
 757     * \name Vertex/pixel buffer object functions
 758     */
 759 #if FEATURE_ARB_vertex_buffer_object
 760    /*@{*/
 761    void (*BindBuffer)( GLcontext *ctx, GLenum target,
 762                        struct gl_buffer_object *obj );
 763
 764    struct gl_buffer_object * (*NewBufferObject)( GLcontext *ctx, GLuint buffer,
 765                                                  GLenum target );
 766
 767    void (*DeleteBuffer)( GLcontext *ctx, struct gl_buffer_object *obj );
 768
 769    void (*BufferData)( GLcontext *ctx, GLenum target, GLsizeiptrARB size,
 770                        const GLvoid *data, GLenum usage,
 771                        struct gl_buffer_object *obj );
 772
 773    void (*BufferSubData)( GLcontext *ctx, GLenum target, GLintptrARB offset,
 774                           GLsizeiptrARB size, const GLvoid *data,
 775                           struct gl_buffer_object *obj );
 776
 777    void (*GetBufferSubData)( GLcontext *ctx, GLenum target,
 778                              GLintptrARB offset, GLsizeiptrARB size,
 779                              GLvoid *data, struct gl_buffer_object *obj );
 780
 781    void * (*MapBuffer)( GLcontext *ctx, GLenum target, GLenum access,
 782                         struct gl_buffer_object *obj );
 783
 784    GLboolean (*UnmapBuffer)( GLcontext *ctx, GLenum target,
 785                              struct gl_buffer_object *obj );
 786    /*@}*/
 787 #endif
 788
 789    /**
 790     * \name Functions for GL_EXT_framebuffer_object
 791     */
 792 #if FEATURE_EXT_framebuffer_object
 793    /*@{*/
 794    struct gl_framebuffer * (*NewFramebuffer)(GLcontext *ctx, GLuint name);
 795    struct gl_renderbuffer * (*NewRenderbuffer)(GLcontext *ctx, GLuint name);
 796    void (*FramebufferRenderbuffer)(GLcontext *ctx,
 797                                    struct gl_renderbuffer_attachment *att,
 798                                    struct gl_renderbuffer *rb);
 799    void (*RenderbufferTexture)(GLcontext *ctx,
 800                                struct gl_renderbuffer_attachment *att,
 801                                struct gl_texture_object *texObj,
 802                                GLenum texTarget, GLuint level, GLuint zoffset);
 803    /*@}*/
 804 #endif
 805
 806
 807    /**
 808     * \name Support for multiple T&L engines
 809     */
 810    /*@{*/
 811
 812    /**
 813     * Bitmask of state changes that require the current T&L module to be
 814     * validated, using ValidateTnlModule() below.
 815     */
 816    GLuint NeedValidate;
 817
 818    /**
 819     * Validate the current T&L module.
 820     *
 821     * This is called directly after UpdateState() when a state change that has
 822     * occurred matches the dd_function_table::NeedValidate bitmask above.  This
 823     * ensures all computed values are up to date, thus allowing the driver to
 824     * decide if the current T&L module needs to be swapped out.
 825     *
 826     * This must be non-NULL if a driver installs a custom T&L module and sets
 827     * the dd_function_table::NeedValidate bitmask, but may be NULL otherwise.
 828     */
 829    void (*ValidateTnlModule)( GLcontext *ctx, GLuint new_state );
 830
 831
 832 #define PRIM_OUTSIDE_BEGIN_END   GL_POLYGON+1
 833 #define PRIM_INSIDE_UNKNOWN_PRIM GL_POLYGON+2
 834 #define PRIM_UNKNOWN             GL_POLYGON+3
 835
 836    /**
 837     * Set by the driver-supplied T&L engine.
 838     *
 839     * Set to PRIM_OUTSIDE_BEGIN_END when outside glBegin()/glEnd().
 840     */
 841    GLuint CurrentExecPrimitive;
 842
 843    /**
 844     * Current state of an in-progress compilation.
 845     *
 846     * May take on any of the additional values PRIM_OUTSIDE_BEGIN_END,
 847     * PRIM_INSIDE_UNKNOWN_PRIM or PRIM_UNKNOWN defined above.
 848     */
 849    GLuint CurrentSavePrimitive;
 850
 851
 852 #define FLUSH_STORED_VERTICES 0x1
 853 #define FLUSH_UPDATE_CURRENT  0x2
 854    /**
 855     * Set by the driver-supplied T&L engine whenever vertices are buffered
 856     * between glBegin()/glEnd() objects or __GLcontextRec::Current is not
 857     * updated.
 858     *
 859     * The dd_function_table::FlushVertices call below may be used to resolve
 860     * these conditions.
 861     */
 862    GLuint NeedFlush;
 863    GLuint SaveNeedFlush;
 864
 865    /**
 866     * If inside glBegin()/glEnd(), it should ASSERT(0).  Otherwise, if
 867     * FLUSH_STORED_VERTICES bit in \p flags is set flushes any buffered
 868     * vertices, if FLUSH_UPDATE_CURRENT bit is set updates
 869     * __GLcontextRec::Current and gl_light_attrib::Material
 870     *
 871     * Note that the default T&L engine never clears the
 872     * FLUSH_UPDATE_CURRENT bit, even after performing the update.
 873     */
 874    void (*FlushVertices)( GLcontext *ctx, GLuint flags );
 875    void (*SaveFlushVertices)( GLcontext *ctx );
 876
 877    /**
 878     * Give the driver the opportunity to hook in its own vtxfmt for
 879     * compiling optimized display lists.  This is called on each valid
 880     * glBegin() during list compilation.
 881     */
 882    GLboolean (*NotifySaveBegin)( GLcontext *ctx, GLenum mode );
 883
 884    /**
 885     * Notify driver that the special derived value _NeedEyeCoords has
 886     * changed.
 887     */
 888    void (*LightingSpaceChange)( GLcontext *ctx );
 889
 890    /**
 891     * Let the T&L component know when the context becomes current.
 892     */
 893    void (*MakeCurrent)( GLcontext *ctx, GLframebuffer *drawBuffer,
 894                         GLframebuffer *readBuffer );
 895
 896    /**
 897     * Called by glNewList().
 898     *
 899     * Let the T&L component know what is going on with display lists
 900     * in time to make changes to dispatch tables, etc.
 901     */
 902    void (*NewList)( GLcontext *ctx, GLuint list, GLenum mode );
 903    /**
 904     * Called by glEndList().
 905     *
 906     * \sa dd_function_table::NewList.
 907     */
 908    void (*EndList)( GLcontext *ctx );
 909
 910    /**
 911     * Called by glCallList(s).
 912     *
 913     * Notify the T&L component before and after calling a display list.
 914     */
 915    void (*BeginCallList)( GLcontext *ctx,
 916                           struct mesa_display_list *dlist );
 917    /**
 918     * Called by glEndCallList().
 919     *
 920     * \sa dd_function_table::BeginCallList.
 921     */
 922    void (*EndCallList)( GLcontext *ctx );
 923
 924 };
 925
 926
 927 /**
 928  * Transform/Clip/Lighting interface
 929  *
 930  * Drivers present a reduced set of the functions possible in
 931  * glBegin()/glEnd() objects.  Core mesa provides translation stubs for the
 932  * remaining functions to map down to these entry points.
 933  *
 934  * These are the initial values to be installed into dispatch by
 935  * mesa.  If the T&L driver wants to modify the dispatch table
 936  * while installed, it must do so itself.  It would be possible for
 937  * the vertexformat to install it's own initial values for these
 938  * functions, but this way there is an obvious list of what is
 939  * expected of the driver.
 940  *
 941  * If the driver wants to hook in entry points other than those
 942  * listed, it must restore them to their original values in
 943  * the disable() callback, below.
 944  */
 945 typedef struct {
 946    /**
 947     * \name Vertex
 948     */
 949    /*@{*/
 950    void (GLAPIENTRYP ArrayElement)( GLint ); /* NOTE */
 951    void (GLAPIENTRYP Color3f)( GLfloat, GLfloat, GLfloat );
 952    void (GLAPIENTRYP Color3fv)( const GLfloat * );
 953    void (GLAPIENTRYP Color4f)( GLfloat, GLfloat, GLfloat, GLfloat );
 954    void (GLAPIENTRYP Color4fv)( const GLfloat * );
 955    void (GLAPIENTRYP EdgeFlag)( GLboolean );
 956    void (GLAPIENTRYP EdgeFlagv)( const GLboolean * );
 957    void (GLAPIENTRYP EvalCoord1f)( GLfloat );          /* NOTE */
 958    void (GLAPIENTRYP EvalCoord1fv)( const GLfloat * ); /* NOTE */
 959    void (GLAPIENTRYP EvalCoord2f)( GLfloat, GLfloat ); /* NOTE */
 960    void (GLAPIENTRYP EvalCoord2fv)( const GLfloat * ); /* NOTE */
 961    void (GLAPIENTRYP EvalPoint1)( GLint );             /* NOTE */
 962    void (GLAPIENTRYP EvalPoint2)( GLint, GLint );      /* NOTE */
 963    void (GLAPIENTRYP FogCoordfEXT)( GLfloat );
 964    void (GLAPIENTRYP FogCoordfvEXT)( const GLfloat * );
 965    void (GLAPIENTRYP Indexf)( GLfloat );
 966    void (GLAPIENTRYP Indexfv)( const GLfloat * );
 967    void (GLAPIENTRYP Materialfv)( GLenum face, GLenum pname, const GLfloat * ); /* NOTE */
 968    void (GLAPIENTRYP MultiTexCoord1fARB)( GLenum, GLfloat );
 969    void (GLAPIENTRYP MultiTexCoord1fvARB)( GLenum, const GLfloat * );
 970    void (GLAPIENTRYP MultiTexCoord2fARB)( GLenum, GLfloat, GLfloat );
 971    void (GLAPIENTRYP MultiTexCoord2fvARB)( GLenum, const GLfloat * );
 972    void (GLAPIENTRYP MultiTexCoord3fARB)( GLenum, GLfloat, GLfloat, GLfloat );
 973    void (GLAPIENTRYP MultiTexCoord3fvARB)( GLenum, const GLfloat * );
 974    void (GLAPIENTRYP MultiTexCoord4fARB)( GLenum, GLfloat, GLfloat, GLfloat, GLfloat );
 975    void (GLAPIENTRYP MultiTexCoord4fvARB)( GLenum, const GLfloat * );
 976    void (GLAPIENTRYP Normal3f)( GLfloat, GLfloat, GLfloat );
 977    void (GLAPIENTRYP Normal3fv)( const GLfloat * );
 978    void (GLAPIENTRYP SecondaryColor3fEXT)( GLfloat, GLfloat, GLfloat );
 979    void (GLAPIENTRYP SecondaryColor3fvEXT)( const GLfloat * );
 980    void (GLAPIENTRYP TexCoord1f)( GLfloat );
 981    void (GLAPIENTRYP TexCoord1fv)( const GLfloat * );
 982    void (GLAPIENTRYP TexCoord2f)( GLfloat, GLfloat );
 983    void (GLAPIENTRYP TexCoord2fv)( const GLfloat * );
 984    void (GLAPIENTRYP TexCoord3f)( GLfloat, GLfloat, GLfloat );
 985    void (GLAPIENTRYP TexCoord3fv)( const GLfloat * );
 986    void (GLAPIENTRYP TexCoord4f)( GLfloat, GLfloat, GLfloat, GLfloat );
 987    void (GLAPIENTRYP TexCoord4fv)( const GLfloat * );
 988    void (GLAPIENTRYP Vertex2f)( GLfloat, GLfloat );
 989    void (GLAPIENTRYP Vertex2fv)( const GLfloat * );
 990    void (GLAPIENTRYP Vertex3f)( GLfloat, GLfloat, GLfloat );
 991    void (GLAPIENTRYP Vertex3fv)( const GLfloat * );
 992    void (GLAPIENTRYP Vertex4f)( GLfloat, GLfloat, GLfloat, GLfloat );
 993    void (GLAPIENTRYP Vertex4fv)( const GLfloat * );
 994    void (GLAPIENTRYP CallList)( GLuint );       /* NOTE */
 995    void (GLAPIENTRYP CallLists)( GLsizei, GLenum, const GLvoid * );     /* NOTE */
 996    void (GLAPIENTRYP Begin)( GLenum );
 997    void (GLAPIENTRYP End)( void );
 998    void (GLAPIENTRYP VertexAttrib1fNV)( GLuint index, GLfloat x );
 999    void (GLAPIENTRYP VertexAttrib1fvNV)( GLuint index, const GLfloat *v );
1000    void (GLAPIENTRYP VertexAttrib2fNV)( GLuint index, GLfloat x, GLfloat y );
1001    void (GLAPIENTRYP VertexAttrib2fvNV)( GLuint index, const GLfloat *v );
1002    void (GLAPIENTRYP VertexAttrib3fNV)( GLuint index, GLfloat x, GLfloat y, GLfloat z );
1003    void (GLAPIENTRYP VertexAttrib3fvNV)( GLuint index, const GLfloat *v );
1004    void (GLAPIENTRYP VertexAttrib4fNV)( GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w );
1005    void (GLAPIENTRYP VertexAttrib4fvNV)( GLuint index, const GLfloat *v );
1006    void (GLAPIENTRYP VertexAttrib1fARB)( GLuint index, GLfloat x );
1007    void (GLAPIENTRYP VertexAttrib1fvARB)( GLuint index, const GLfloat *v );
1008    void (GLAPIENTRYP VertexAttrib2fARB)( GLuint index, GLfloat x, GLfloat y );
1009    void (GLAPIENTRYP VertexAttrib2fvARB)( GLuint index, const GLfloat *v );
1010    void (GLAPIENTRYP VertexAttrib3fARB)( GLuint index, GLfloat x, GLfloat y, GLfloat z );
1011    void (GLAPIENTRYP VertexAttrib3fvARB)( GLuint index, const GLfloat *v );
1012    void (GLAPIENTRYP VertexAttrib4fARB)( GLuint index, GLfloat x, GLfloat y, GLfloat z, GLfloat w );
1013    void (GLAPIENTRYP VertexAttrib4fvARB)( GLuint index, const GLfloat *v );
1014    /*@}*/
1015
1016    /*
1017     */
1018    void (GLAPIENTRYP Rectf)( GLfloat, GLfloat, GLfloat, GLfloat );
1019
1020    /**
1021     * \name Array
1022     */
1023    /*@{*/
1024    void (GLAPIENTRYP DrawArrays)( GLenum mode, GLint start, GLsizei count );
1025    void (GLAPIENTRYP DrawElements)( GLenum mode, GLsizei count, GLenum type,
1026                          const GLvoid *indices );
1027    void (GLAPIENTRYP DrawRangeElements)( GLenum mode, GLuint start,
1028                               GLuint end, GLsizei count,
1029                               GLenum type, const GLvoid *indices );
1030    /*@}*/
1031
1032    /**
1033     * \name Eval
1034     *
1035     * If you don't support eval, fallback to the default vertex format
1036     * on receiving an eval call and use the pipeline mechanism to
1037     * provide partial T&L acceleration.
1038     *
1039     * Mesa will provide a set of helper functions to do eval within
1040     * accelerated vertex formats, eventually...
1041     */
1042    /*@{*/
1043    void (GLAPIENTRYP EvalMesh1)( GLenum mode, GLint i1, GLint i2 );
1044    void (GLAPIENTRYP EvalMesh2)( GLenum mode, GLint i1, GLint i2, GLint j1, GLint j2 );
1045    /*@}*/
1046
1047 } GLvertexformat;
1048
1049
1050 #endif /* DD_INCLUDED */