src/mesa/drivers/beos/GLView.cpp

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.1
   4  *
   5  * Copyright (C) 1999-2004  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include <assert.h>
  27 #include <stdio.h>
  28
  29 extern "C" {
  30
  31 #include "glheader.h"
  32 #include "version.h"
  33 #include "buffers.h"
  34 #include "bufferobj.h"
  35 #include "context.h"
  36 #include "colormac.h"
  37 #include "depth.h"
  38 #include "extensions.h"
  39 #include "macros.h"
  40 #include "matrix.h"
  41 #include "mtypes.h"
  42 #include "texformat.h"
  43 #include "texobj.h"
  44 #include "teximage.h"
  45 #include "texstore.h"
  46 #include "vbo/vbo.h"
  47 #include "swrast/swrast.h"
  48 #include "swrast_setup/swrast_setup.h"
  49 #include "swrast/s_context.h"
  50 #include "swrast/s_depth.h"
  51 #include "swrast/s_lines.h"
  52 #include "swrast/s_triangle.h"
  53 #include "swrast/s_trispan.h"
  54 #include "tnl/tnl.h"
  55 #include "tnl/t_context.h"
  56 #include "tnl/t_pipeline.h"
  57
  58 #include "drivers/common/driverfuncs.h"
  59
  60 }       // extern "C"
  61
  62 #include <interface/Screen.h>
  63 #include <GLView.h>
  64
  65 // BeOS component ordering for B_RGBA32 bitmap format
  66 #if B_HOST_IS_LENDIAN
  67         #define BE_RCOMP 2
  68         #define BE_GCOMP 1
  69         #define BE_BCOMP 0
  70         #define BE_ACOMP 3
  71
  72         #define PACK_B_RGBA32(color) (color[BCOMP] | (color[GCOMP] << 8) | \
  73                                                         (color[RCOMP] << 16) | (color[ACOMP] << 24))
  74
  75         #define PACK_B_RGB32(color) (color[BCOMP] | (color[GCOMP] << 8) | \
  76                                                         (color[RCOMP] << 16) | 0xFF000000)
  77 #else
  78         // Big Endian B_RGBA32 bitmap format
  79         #define BE_RCOMP 1
  80         #define BE_GCOMP 2
  81         #define BE_BCOMP 3
  82         #define BE_ACOMP 0
  83
  84         #define PACK_B_RGBA32(color) (color[ACOMP] | (color[RCOMP] << 8) | \
  85                                                         (color[GCOMP] << 16) | (color[BCOMP] << 24))
  86
  87         #define PACK_B_RGB32(color) ((color[RCOMP] << 8) | (color[GCOMP] << 16) | \
  88                                                         (color[BCOMP] << 24) | 0xFF000000)
  89 #endif
  90
  91 #define FLIP(coord) (LIBGGI_MODE(ggi_ctx->ggi_visual)->visible.y-(coord) - 1)
  92
  93 const char * color_space_name(color_space space);
  94
  95 //
  96 // This object hangs off of the BGLView object.  We have to use
  97 // Be's BGLView class as-is to maintain binary compatibility (we
  98 // can't add new members to it).  Instead we just put all our data
  99 // in this class and use BGLVIew::m_gc to point to it.
 100 //
 101 class MesaDriver
 102 {
 103 friend class BGLView;
 104 public:
 105         MesaDriver();
 106         ~MesaDriver();
 107
 108         void            Init(BGLView * bglview, struct gl_context * c, struct gl_config * v, struct gl_framebuffer * b);
 109
 110         void            LockGL();
 111         void            UnlockGL();
 112         void            SwapBuffers() const;
 113         status_t        CopyPixelsOut(BPoint source, BBitmap *dest);
 114         status_t        CopyPixelsIn(BBitmap *source, BPoint dest);
 115
 116         void CopySubBuffer(GLint x, GLint y, GLuint width, GLuint height) const;
 117         void Draw(BRect updateRect) const;
 118
 119 private:
 120         MesaDriver(const MesaDriver &rhs);  // copy constructor illegal
 121         MesaDriver &operator=(const MesaDriver &rhs);  // assignment oper. illegal
 122
 123         struct gl_context *     m_glcontext;
 124         struct gl_config *              m_glvisual;
 125         struct gl_framebuffer * m_glframebuffer;
 126
 127         BGLView *               m_bglview;
 128         BBitmap *               m_bitmap;
 129
 130         GLchan                  m_clear_color[4];  // buffer clear color
 131         GLuint                  m_clear_index;      // buffer clear color index
 132         GLint                   m_bottom;           // used for flipping Y coords
 133         GLuint                  m_width;
 134         GLuint                  m_height;
 135
 136    // Mesa Device Driver callback functions
 137    static void          UpdateState(struct gl_context *ctx, GLuint new_state);
 138    static void          ClearIndex(struct gl_context *ctx, GLuint index);
 139    static void          ClearColor(struct gl_context *ctx, const GLfloat color[4]);
 140    static void          Clear(struct gl_context *ctx, GLbitfield mask,
 141                                 GLboolean all, GLint x, GLint y,
 142                                 GLint width, GLint height);
 143    static void          ClearFront(struct gl_context *ctx, GLboolean all, GLint x, GLint y,
 144                           GLint width, GLint height);
 145    static void          ClearBack(struct gl_context *ctx, GLboolean all, GLint x, GLint y,
 146                          GLint width, GLint height);
 147    static void          Index(struct gl_context *ctx, GLuint index);
 148    static void          Color(struct gl_context *ctx, GLubyte r, GLubyte g,
 149                      GLubyte b, GLubyte a);
 150    static void          SetBuffer(struct gl_context *ctx, struct gl_framebuffer *colorBuffer,
 151                              GLenum mode);
 152    static void          GetBufferSize(struct gl_framebuffer * framebuffer, GLuint *width,
 153                              GLuint *height);
 154    static void          Error(struct gl_context *ctx);
 155    static const GLubyte *       GetString(struct gl_context *ctx, GLenum name);
 156    static void          Viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h);
 157
 158    // Front-buffer functions
 159    static void          WriteRGBASpanFront(const struct gl_context *ctx, GLuint n,
 160                                   GLint x, GLint y,
 161                                   CONST GLubyte rgba[][4],
 162                                   const GLubyte mask[]);
 163    static void          WriteRGBSpanFront(const struct gl_context *ctx, GLuint n,
 164                                  GLint x, GLint y,
 165                                  CONST GLubyte rgba[][3],
 166                                  const GLubyte mask[]);
 167    static void          WriteMonoRGBASpanFront(const struct gl_context *ctx, GLuint n,
 168                                       GLint x, GLint y,
 169                                       const GLchan color[4],
 170                                       const GLubyte mask[]);
 171    static void          WriteRGBAPixelsFront(const struct gl_context *ctx, GLuint n,
 172                                     const GLint x[], const GLint y[],
 173                                     CONST GLubyte rgba[][4],
 174                                     const GLubyte mask[]);
 175    static void          WriteMonoRGBAPixelsFront(const struct gl_context *ctx, GLuint n,
 176                                         const GLint x[], const GLint y[],
 177                                         const GLchan color[4],
 178                                         const GLubyte mask[]);
 179    static void          WriteCI32SpanFront(const struct gl_context *ctx, GLuint n,
 180                                   GLint x, GLint y,
 181                                   const GLuint index[], const GLubyte mask[]);
 182    static void          WriteCI8SpanFront(const struct gl_context *ctx, GLuint n,
 183                                  GLint x, GLint y,
 184                                  const GLubyte index[], const GLubyte mask[]);
 185    static void          WriteMonoCISpanFront(const struct gl_context *ctx, GLuint n,
 186                                     GLint x, GLint y,
 187                                     GLuint colorIndex, const GLubyte mask[]);
 188    static void          WriteCI32PixelsFront(const struct gl_context *ctx,
 189                                     GLuint n, const GLint x[], const GLint y[],
 190                                     const GLuint index[], const GLubyte mask[]);
 191    static void          WriteMonoCIPixelsFront(const struct gl_context *ctx, GLuint n,
 192                                       const GLint x[], const GLint y[],
 193                                       GLuint colorIndex, const GLubyte mask[]);
 194    static void          ReadCI32SpanFront(const struct gl_context *ctx,
 195                                  GLuint n, GLint x, GLint y, GLuint index[]);
 196    static void          ReadRGBASpanFront(const struct gl_context *ctx, GLuint n,
 197                                  GLint x, GLint y,
 198                                  GLubyte rgba[][4]);
 199    static void          ReadCI32PixelsFront(const struct gl_context *ctx,
 200                                    GLuint n, const GLint x[], const GLint y[],
 201                                    GLuint indx[], const GLubyte mask[]);
 202    static void          ReadRGBAPixelsFront(const struct gl_context *ctx,
 203                                    GLuint n, const GLint x[], const GLint y[],
 204                                    GLubyte rgba[][4], const GLubyte mask[]);
 205
 206    // Back buffer functions
 207    static void          WriteRGBASpanBack(const struct gl_context *ctx, GLuint n,
 208                                   GLint x, GLint y,
 209                                   CONST GLubyte rgba[][4],
 210                                   const GLubyte mask[]);
 211    static void          WriteRGBSpanBack(const struct gl_context *ctx, GLuint n,
 212                                  GLint x, GLint y,
 213                                  CONST GLubyte rgba[][3],
 214                                  const GLubyte mask[]);
 215    static void          WriteMonoRGBASpanBack(const struct gl_context *ctx, GLuint n,
 216                                      GLint x, GLint y,
 217                                      const GLchan color[4],
 218                                      const GLubyte mask[]);
 219    static void          WriteRGBAPixelsBack(const struct gl_context *ctx, GLuint n,
 220                                    const GLint x[], const GLint y[],
 221                                    CONST GLubyte rgba[][4],
 222                                    const GLubyte mask[]);
 223    static void          WriteMonoRGBAPixelsBack(const struct gl_context *ctx, GLuint n,
 224                                        const GLint x[], const GLint y[],
 225                                        const GLchan color[4],
 226                                        const GLubyte mask[]);
 227    static void          WriteCI32SpanBack(const struct gl_context *ctx, GLuint n,
 228                                  GLint x, GLint y,
 229                                  const GLuint index[], const GLubyte mask[]);
 230    static void          WriteCI8SpanBack(const struct gl_context *ctx, GLuint n, GLint x, GLint y,
 231                                 const GLubyte index[], const GLubyte mask[]);
 232    static void          WriteMonoCISpanBack(const struct gl_context *ctx, GLuint n,
 233                                    GLint x, GLint y, GLuint colorIndex,
 234                                    const GLubyte mask[]);
 235    static void          WriteCI32PixelsBack(const struct gl_context *ctx,
 236                                    GLuint n, const GLint x[], const GLint y[],
 237                                    const GLuint index[], const GLubyte mask[]);
 238    static void          WriteMonoCIPixelsBack(const struct gl_context *ctx,
 239                                      GLuint n, const GLint x[], const GLint y[],
 240                                      GLuint colorIndex, const GLubyte mask[]);
 241    static void          ReadCI32SpanBack(const struct gl_context *ctx,
 242                                 GLuint n, GLint x, GLint y, GLuint index[]);
 243    static void          ReadRGBASpanBack(const struct gl_context *ctx, GLuint n,
 244                                 GLint x, GLint y,
 245                                 GLubyte rgba[][4]);
 246    static void          ReadCI32PixelsBack(const struct gl_context *ctx,
 247                                   GLuint n, const GLint x[], const GLint y[],
 248                                   GLuint indx[], const GLubyte mask[]);
 249    static void          ReadRGBAPixelsBack(const struct gl_context *ctx,
 250                                   GLuint n, const GLint x[], const GLint y[],
 251                                   GLubyte rgba[][4], const GLubyte mask[]);
 252
 253 };
 254
 255 //------------------------------------------------------------------
 256 // Public interface methods
 257 //------------------------------------------------------------------
 258
 259
 260 //
 261 // Input:  rect - initial rectangle
 262 //         name - window name
 263 //         resizingMode - example: B_FOLLOW_NONE
 264 //         mode - usually 0 ?
 265 //         options - Bitwise-OR of BGL_* tokens
 266 //
 267 BGLView::BGLView(BRect rect, char *name,
 268                  ulong resizingMode, ulong mode,
 269                  ulong options)
 270    : BView(rect, name, B_FOLLOW_ALL_SIDES, mode | B_WILL_DRAW | B_FRAME_EVENTS) //  | B_FULL_UPDATE_ON_RESIZE)
 271 {
 272         // We don't support single buffering (yet): double buffering forced.
 273         options |= BGL_DOUBLE;
 274
 275    const GLboolean rgbFlag = ((options & BGL_INDEX) == 0);
 276    const GLboolean alphaFlag = ((options & BGL_ALPHA) == BGL_ALPHA);
 277    const GLboolean dblFlag = ((options & BGL_DOUBLE) == BGL_DOUBLE);
 278    const GLboolean stereoFlag = false;
 279    const GLint depth = (options & BGL_DEPTH) ? 16 : 0;
 280    const GLint stencil = (options & BGL_STENCIL) ? 8 : 0;
 281    const GLint accum = (options & BGL_ACCUM) ? 16 : 0;
 282    const GLint index = (options & BGL_INDEX) ? 32 : 0;
 283    const GLint red = rgbFlag ? 8 : 0;
 284    const GLint green = rgbFlag ? 8 : 0;
 285    const GLint blue = rgbFlag ? 8 : 0;
 286    const GLint alpha = alphaFlag ? 8 : 0;
 287
 288         m_options = options | BGL_INDIRECT;
 289
 290    struct dd_function_table functions;
 291
 292    if (!rgbFlag) {
 293       fprintf(stderr, "Mesa Warning: color index mode not supported\n");
 294    }
 295
 296    // Allocate auxiliary data object
 297    MesaDriver * md = new MesaDriver();
 298
 299    // examine option flags and create gl_context struct
 300    struct gl_config * visual = _mesa_create_visual( dblFlag,
 301                                             stereoFlag,
 302                                             red, green, blue, alpha,
 303                                             depth,
 304                                             stencil,
 305                                             accum, accum, accum, accum,
 306                                             1
 307                                             );
 308
 309         // Initialize device driver function table
 310         _mesa_init_driver_functions(&functions);
 311
 312         functions.GetString     = md->GetString;
 313         functions.UpdateState   = md->UpdateState;
 314         functions.GetBufferSize = md->GetBufferSize;
 315         functions.Clear                 = md->Clear;
 316         functions.ClearIndex    = md->ClearIndex;
 317         functions.ClearColor    = md->ClearColor;
 318         functions.Error                 = md->Error;
 319         functions.Viewport      = md->Viewport;
 320
 321         // create core context
 322         struct gl_context *ctx = _mesa_create_context(visual, NULL, &functions, md);
 323         if (! ctx) {
 324          _mesa_destroy_visual(visual);
 325          delete md;
 326          return;
 327       }
 328    _mesa_enable_sw_extensions(ctx);
 329    _mesa_enable_1_3_extensions(ctx);
 330    _mesa_enable_1_4_extensions(ctx);
 331    _mesa_enable_1_5_extensions(ctx);
 332
 333
 334    // create core framebuffer
 335    struct gl_framebuffer * buffer = _mesa_create_framebuffer(visual,
 336                                               depth > 0 ? GL_TRUE : GL_FALSE,
 337                                               stencil > 0 ? GL_TRUE: GL_FALSE,
 338                                               accum > 0 ? GL_TRUE : GL_FALSE,
 339                                               alphaFlag
 340                                               );
 341
 342    /* Initialize the software rasterizer and helper modules.
 343     */
 344    _swrast_CreateContext(ctx);
 345    _vbo_CreateContext(ctx);
 346    _tnl_CreateContext(ctx);
 347    _swsetup_CreateContext(ctx);
 348    _swsetup_Wakeup(ctx);
 349
 350    md->Init(this, ctx, visual, buffer );
 351
 352    // Hook aux data into BGLView object
 353    m_gc = md;
 354
 355    // some stupid applications (Quake2) don't even think about calling LockGL()
 356    // before using glGetString and friends... so make sure there is at least a
 357    // valid context.
 358    if (!_mesa_get_current_context()) {
 359       LockGL();
 360       // not needed, we don't have a looper yet: UnlockLooper();
 361    }
 362
 363 }
 364
 365
 366 BGLView::~BGLView()
 367 {
 368    // printf("BGLView destructor\n");
 369    MesaDriver * md = (MesaDriver *) m_gc;
 370    assert(md);
 371    delete md;
 372 }
 373
 374 void BGLView::LockGL()
 375 {
 376    MesaDriver * md = (MesaDriver *) m_gc;
 377    assert(md);
 378    md->LockGL();
 379 }
 380
 381 void BGLView::UnlockGL()
 382 {
 383    MesaDriver * md = (MesaDriver *) m_gc;
 384    assert(md);
 385    md->UnlockGL();
 386 }
 387
 388 void BGLView::SwapBuffers()
 389 {
 390         SwapBuffers(false);
 391 }
 392
 393 void BGLView::SwapBuffers(bool vSync)
 394 {
 395         MesaDriver * md = (MesaDriver *) m_gc;
 396         assert(md);
 397         md->SwapBuffers();
 398
 399         if (vSync) {
 400                 BScreen screen(Window());
 401                 screen.WaitForRetrace();
 402         }
 403 }
 404
 405
 406 #if 0
 407 void BGLView::CopySubBufferMESA(GLint x, GLint y, GLuint width, GLuint height)
 408 {
 409    MesaDriver * md = (MesaDriver *) m_gc;
 410    assert(md);
 411    md->CopySubBuffer(x, y, width, height);
 412 }
 413 #endif
 414
 415 BView * BGLView::EmbeddedView()
 416 {
 417         return NULL;
 418 }
 419
 420 status_t BGLView::CopyPixelsOut(BPoint source, BBitmap *dest)
 421 {
 422         if (! dest || ! dest->Bounds().IsValid())
 423                 return B_BAD_VALUE;
 424
 425         MesaDriver * md = (MesaDriver *) m_gc;
 426         assert(md);
 427         return md->CopyPixelsOut(source, dest);
 428 }
 429
 430 status_t BGLView::CopyPixelsIn(BBitmap *source, BPoint dest)
 431 {
 432         if (! source || ! source->Bounds().IsValid())
 433                 return B_BAD_VALUE;
 434
 435         MesaDriver * md = (MesaDriver *) m_gc;
 436         assert(md);
 437         return md->CopyPixelsIn(source, dest);
 438 }
 439
 440
 441 void BGLView::ErrorCallback(unsigned long errorCode) // Mesa's GLenum is not ulong but uint!
 442 {
 443         char msg[32];
 444         sprintf(msg, "GL: Error code $%04lx.", errorCode);
 445         // debugger(msg);
 446         fprintf(stderr, "%s\n", msg);
 447         return;
 448 }
 449
 450 void BGLView::Draw(BRect updateRect)
 451 {
 452    // printf("BGLView::Draw()\n");
 453    MesaDriver * md = (MesaDriver *) m_gc;
 454    assert(md);
 455    md->Draw(updateRect);
 456 }
 457
 458 void BGLView::AttachedToWindow()
 459 {
 460    BView::AttachedToWindow();
 461
 462    // don't paint window background white when resized
 463    SetViewColor(B_TRANSPARENT_32_BIT);
 464 }
 465
 466 void BGLView::AllAttached()
 467 {
 468    BView::AllAttached();
 469 //   printf("BGLView AllAttached\n");
 470 }
 471
 472 void BGLView::DetachedFromWindow()
 473 {
 474    BView::DetachedFromWindow();
 475 }
 476
 477 void BGLView::AllDetached()
 478 {
 479    BView::AllDetached();
 480 //   printf("BGLView AllDetached");
 481 }
 482
 483 void BGLView::FrameResized(float width, float height)
 484 {
 485    return BView::FrameResized(width, height);
 486 }
 487
 488 status_t BGLView::Perform(perform_code d, void *arg)
 489 {
 490    return BView::Perform(d, arg);
 491 }
 492
 493
 494 status_t BGLView::Archive(BMessage *data, bool deep) const
 495 {
 496    return BView::Archive(data, deep);
 497 }
 498
 499 void BGLView::MessageReceived(BMessage *msg)
 500 {
 501    BView::MessageReceived(msg);
 502 }
 503
 504 void BGLView::SetResizingMode(uint32 mode)
 505 {
 506    BView::SetResizingMode(mode);
 507 }
 508
 509 void BGLView::Show()
 510 {
 511    BView::Show();
 512 }
 513
 514 void BGLView::Hide()
 515 {
 516    BView::Hide();
 517 }
 518
 519 BHandler *BGLView::ResolveSpecifier(BMessage *msg, int32 index,
 520                                     BMessage *specifier, int32 form,
 521                                     const char *property)
 522 {
 523    return BView::ResolveSpecifier(msg, index, specifier, form, property);
 524 }
 525
 526 status_t BGLView::GetSupportedSuites(BMessage *data)
 527 {
 528    return BView::GetSupportedSuites(data);
 529 }
 530
 531 void BGLView::DirectConnected( direct_buffer_info *info )
 532 {
 533 #if 0
 534         if (! m_direct_connected && m_direct_connection_disabled)
 535                 return;
 536
 537         direct_info_locker->Lock();
 538         switch(info->buffer_state & B_DIRECT_MODE_MASK) {
 539         case B_DIRECT_START:
 540                 m_direct_connected = true;
 541         case B_DIRECT_MODIFY:
 542                 // Get clipping information
 543                 if (m_clip_list)
 544                         free(m_clip_list);
 545                 m_clip_list_count = info->clip_list_count;
 546                 m_clip_list = (clipping_rect *) malloc(m_clip_list_count*sizeof(clipping_rect));
 547                 if (m_clip_list) {
 548                         memcpy(m_clip_list, info->clip_list, m_clip_list_count*sizeof(clipping_rect));
 549                         fBits = (uint8 *) info->bits;
 550                         fRowBytes = info->bytes_per_row;
 551                         fFormat = info->pixel_format;
 552                         fBounds = info->window_bounds;
 553                         fDirty = true;
 554                 }
 555                 break;
 556         case B_DIRECT_STOP:
 557                 fConnected = false;
 558                 break;
 559         }
 560         direct_info_locker->Unlock();
 561 #endif
 562 }
 563
 564 void BGLView::EnableDirectMode( bool enabled )
 565 {
 566    // TODO
 567 }
 568
 569
 570 //---- virtual reserved methods ----------
 571
 572 void BGLView::_ReservedGLView1() {}
 573 void BGLView::_ReservedGLView2() {}
 574 void BGLView::_ReservedGLView3() {}
 575 void BGLView::_ReservedGLView4() {}
 576 void BGLView::_ReservedGLView5() {}
 577 void BGLView::_ReservedGLView6() {}
 578 void BGLView::_ReservedGLView7() {}
 579 void BGLView::_ReservedGLView8() {}
 580
 581 #if 0
 582 // Not implemented!!!
 583
 584 BGLView::BGLView(const BGLView &v)
 585         : BView(v)
 586 {
 587    // XXX not sure how this should work
 588    printf("Warning BGLView::copy constructor not implemented\n");
 589 }
 590
 591 BGLView &BGLView::operator=(const BGLView &v)
 592 {
 593    printf("Warning BGLView::operator= not implemented\n");
 594         return *this;
 595 }
 596 #endif
 597
 598 void BGLView::dither_front()
 599 {
 600    // no-op
 601 }
 602
 603 bool BGLView::confirm_dither()
 604 {
 605    // no-op
 606    return false;
 607 }
 608
 609 void BGLView::draw(BRect r)
 610 {
 611    // XXX no-op ???
 612 }
 613
 614 /* Direct Window stuff */
 615 void BGLView::drawScanline( int x1, int x2, int y, void *data )
 616 {
 617    // no-op
 618 }
 619
 620 void BGLView::scanlineHandler(struct rasStateRec *state,
 621                               GLint x1, GLint x2)
 622 {
 623    // no-op
 624 }
 625
 626 void BGLView::lock_draw()
 627 {
 628    // no-op
 629 }
 630
 631 void BGLView::unlock_draw()
 632 {
 633    // no-op
 634 }
 635
 636 bool BGLView::validateView()
 637 {
 638    // no-op
 639    return true;
 640 }
 641
 642 // #pragma mark -
 643
 644 MesaDriver::MesaDriver()
 645 {
 646    m_glcontext          = NULL;
 647    m_glvisual           = NULL;
 648    m_glframebuffer      = NULL;
 649    m_bglview            = NULL;
 650    m_bitmap             = NULL;
 651
 652    m_clear_color[BE_RCOMP] = 0;
 653    m_clear_color[BE_GCOMP] = 0;
 654    m_clear_color[BE_BCOMP] = 0;
 655    m_clear_color[BE_ACOMP] = 0;
 656
 657    m_clear_index = 0;
 658 }
 659
 660
 661 MesaDriver::~MesaDriver()
 662 {
 663    _mesa_destroy_visual(m_glvisual);
 664    _mesa_destroy_framebuffer(m_glframebuffer);
 665    _mesa_destroy_context(m_glcontext);
 666
 667    delete m_bitmap;
 668 }
 669
 670
 671 void MesaDriver::Init(BGLView * bglview, struct gl_context * ctx, struct gl_config * visual, struct gl_framebuffer * framebuffer)
 672 {
 673         m_bglview               = bglview;
 674         m_glcontext     = ctx;
 675         m_glvisual              = visual;
 676         m_glframebuffer = framebuffer;
 677
 678         MesaDriver * md = (MesaDriver *) ctx->DriverCtx;
 679         struct swrast_device_driver * swdd = _swrast_GetDeviceDriverReference( ctx );
 680         TNLcontext * tnl = TNL_CONTEXT(ctx);
 681
 682         assert(md->m_glcontext == ctx );
 683         assert(tnl);
 684         assert(swdd);
 685
 686         // Use default TCL pipeline
 687         tnl->Driver.RunPipeline = _tnl_run_pipeline;
 688
 689         swdd->SetBuffer = this->SetBuffer;
 690 }
 691
 692
 693 void MesaDriver::LockGL()
 694 {
 695         m_bglview->LockLooper();
 696
 697    UpdateState(m_glcontext, 0);
 698    _mesa_make_current(m_glcontext, m_glframebuffer);
 699 }
 700
 701
 702 void MesaDriver::UnlockGL()
 703 {
 704         if (m_bglview->Looper()->IsLocked())
 705                 m_bglview->UnlockLooper();
 706    // Could call _mesa_make_current(NULL, NULL) but it would just
 707    // hinder performance
 708 }
 709
 710
 711 void MesaDriver::SwapBuffers() const
 712 {
 713     _mesa_notifySwapBuffers(m_glcontext);
 714
 715         if (m_bitmap) {
 716                 m_bglview->LockLooper();
 717                 m_bglview->DrawBitmap(m_bitmap);
 718                 m_bglview->UnlockLooper();
 719         };
 720 }
 721
 722
 723 void MesaDriver::CopySubBuffer(GLint x, GLint y, GLuint width, GLuint height) const
 724 {
 725    if (m_bitmap) {
 726       // Source bitmap and view's bitmap are same size.
 727       // Source and dest rectangle are the same.
 728       // Note (x,y) = (0,0) is the lower-left corner, have to flip Y
 729       BRect srcAndDest;
 730       srcAndDest.left = x;
 731       srcAndDest.right = x + width - 1;
 732       srcAndDest.bottom = m_bottom - y;
 733       srcAndDest.top = srcAndDest.bottom - height + 1;
 734       m_bglview->DrawBitmap(m_bitmap, srcAndDest, srcAndDest);
 735    }
 736 }
 737
 738 status_t MesaDriver::CopyPixelsOut(BPoint location, BBitmap *bitmap)
 739 {
 740         color_space scs = m_bitmap->ColorSpace();
 741         color_space dcs = bitmap->ColorSpace();
 742
 743         if (scs != dcs && (scs != B_RGBA32 || dcs != B_RGB32)) {
 744                 printf("CopyPixelsOut(): incompatible color space: %s != %s\n",
 745                         color_space_name(scs),
 746                         color_space_name(dcs));
 747                 return B_BAD_TYPE;
 748         }
 749
 750         // debugger("CopyPixelsOut()");
 751
 752         BRect sr = m_bitmap->Bounds();
 753         BRect dr = bitmap->Bounds();
 754
 755         sr = sr & dr.OffsetBySelf(location);
 756         dr = sr.OffsetByCopy(-location.x, -location.y);
 757
 758         uint8 *ps = (uint8 *) m_bitmap->Bits();
 759         uint8 *pd = (uint8 *) bitmap->Bits();
 760         uint32 *s, *d;
 761         uint32 y;
 762         for (y = (uint32) sr.top; y <= (uint32) sr.bottom; y++) {
 763                 s = (uint32 *) (ps + y * m_bitmap->BytesPerRow());
 764                 s += (uint32) sr.left;
 765
 766                 d = (uint32 *) (pd + (y + (uint32) (dr.top - sr.top)) * bitmap->BytesPerRow());
 767                 d += (uint32) dr.left;
 768
 769                 memcpy(d, s, dr.IntegerWidth() * 4);
 770         }
 771         return B_OK;
 772 }
 773
 774 status_t MesaDriver::CopyPixelsIn(BBitmap *bitmap, BPoint location)
 775 {
 776         color_space scs = bitmap->ColorSpace();
 777         color_space dcs = m_bitmap->ColorSpace();
 778
 779         if (scs != dcs && (dcs != B_RGBA32 || scs != B_RGB32)) {
 780                 printf("CopyPixelsIn(): incompatible color space: %s != %s\n",
 781                         color_space_name(scs),
 782                         color_space_name(dcs));
 783                 return B_BAD_TYPE;
 784         }
 785
 786         // debugger("CopyPixelsIn()");
 787
 788         BRect sr = bitmap->Bounds();
 789         BRect dr = m_bitmap->Bounds();
 790
 791         sr = sr & dr.OffsetBySelf(location);
 792         dr = sr.OffsetByCopy(-location.x, -location.y);
 793
 794         uint8 *ps = (uint8 *) bitmap->Bits();
 795         uint8 *pd = (uint8 *) m_bitmap->Bits();
 796         uint32 *s, *d;
 797         uint32 y;
 798         for (y = (uint32) sr.top; y <= (uint32) sr.bottom; y++) {
 799                 s = (uint32 *) (ps + y * bitmap->BytesPerRow());
 800                 s += (uint32) sr.left;
 801
 802                 d = (uint32 *) (pd + (y + (uint32) (dr.top - sr.top)) * m_bitmap->BytesPerRow());
 803                 d += (uint32) dr.left;
 804
 805                 memcpy(d, s, dr.IntegerWidth() * 4);
 806         }
 807         return B_OK;
 808 }
 809
 810
 811 void MesaDriver::Draw(BRect updateRect) const
 812 {
 813    if (m_bitmap)
 814       m_bglview->DrawBitmap(m_bitmap, updateRect, updateRect);
 815 }
 816
 817
 818 void MesaDriver::Error(struct gl_context *ctx)
 819 {
 820         MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
 821         if (md && md->m_bglview)
 822                 md->m_bglview->ErrorCallback((unsigned long) ctx->ErrorValue);
 823 }
 824
 825 void MesaDriver::UpdateState( struct gl_context *ctx, GLuint new_state )
 826 {
 827         struct swrast_device_driver *   swdd = _swrast_GetDeviceDriverReference( ctx );
 828
 829         _swrast_InvalidateState( ctx, new_state );
 830         _swsetup_InvalidateState( ctx, new_state );
 831         _vbo_InvalidateState( ctx, new_state );
 832         _tnl_InvalidateState( ctx, new_state );
 833
 834         if (ctx->Color.DrawBuffer[0] == GL_FRONT) {
 835       /* read/write front buffer */
 836       swdd->WriteRGBASpan = MesaDriver::WriteRGBASpanFront;
 837       swdd->WriteRGBSpan = MesaDriver::WriteRGBSpanFront;
 838       swdd->WriteRGBAPixels = MesaDriver::WriteRGBAPixelsFront;
 839       swdd->WriteMonoRGBASpan = MesaDriver::WriteMonoRGBASpanFront;
 840       swdd->WriteMonoRGBAPixels = MesaDriver::WriteMonoRGBAPixelsFront;
 841       swdd->WriteCI32Span = MesaDriver::WriteCI32SpanFront;
 842       swdd->WriteCI8Span = MesaDriver::WriteCI8SpanFront;
 843       swdd->WriteMonoCISpan = MesaDriver::WriteMonoCISpanFront;
 844       swdd->WriteCI32Pixels = MesaDriver::WriteCI32PixelsFront;
 845       swdd->WriteMonoCIPixels = MesaDriver::WriteMonoCIPixelsFront;
 846       swdd->ReadRGBASpan = MesaDriver::ReadRGBASpanFront;
 847       swdd->ReadRGBAPixels = MesaDriver::ReadRGBAPixelsFront;
 848       swdd->ReadCI32Span = MesaDriver::ReadCI32SpanFront;
 849       swdd->ReadCI32Pixels = MesaDriver::ReadCI32PixelsFront;
 850    }
 851    else {
 852       /* read/write back buffer */
 853       swdd->WriteRGBASpan = MesaDriver::WriteRGBASpanBack;
 854       swdd->WriteRGBSpan = MesaDriver::WriteRGBSpanBack;
 855       swdd->WriteRGBAPixels = MesaDriver::WriteRGBAPixelsBack;
 856       swdd->WriteMonoRGBASpan = MesaDriver::WriteMonoRGBASpanBack;
 857       swdd->WriteMonoRGBAPixels = MesaDriver::WriteMonoRGBAPixelsBack;
 858       swdd->WriteCI32Span = MesaDriver::WriteCI32SpanBack;
 859       swdd->WriteCI8Span = MesaDriver::WriteCI8SpanBack;
 860       swdd->WriteMonoCISpan = MesaDriver::WriteMonoCISpanBack;
 861       swdd->WriteCI32Pixels = MesaDriver::WriteCI32PixelsBack;
 862       swdd->WriteMonoCIPixels = MesaDriver::WriteMonoCIPixelsBack;
 863       swdd->ReadRGBASpan = MesaDriver::ReadRGBASpanBack;
 864       swdd->ReadRGBAPixels = MesaDriver::ReadRGBAPixelsBack;
 865       swdd->ReadCI32Span = MesaDriver::ReadCI32SpanBack;
 866       swdd->ReadCI32Pixels = MesaDriver::ReadCI32PixelsBack;
 867     }
 868 }
 869
 870
 871 void MesaDriver::ClearIndex(struct gl_context *ctx, GLuint index)
 872 {
 873    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
 874    md->m_clear_index = index;
 875 }
 876
 877
 878 void MesaDriver::ClearColor(struct gl_context *ctx, const GLfloat color[4])
 879 {
 880    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
 881    CLAMPED_FLOAT_TO_CHAN(md->m_clear_color[BE_RCOMP], color[0]);
 882    CLAMPED_FLOAT_TO_CHAN(md->m_clear_color[BE_GCOMP], color[1]);
 883    CLAMPED_FLOAT_TO_CHAN(md->m_clear_color[BE_BCOMP], color[2]);
 884    CLAMPED_FLOAT_TO_CHAN(md->m_clear_color[BE_ACOMP], color[3]);
 885    assert(md->m_bglview);
 886 }
 887
 888
 889 void MesaDriver::Clear(struct gl_context *ctx, GLbitfield mask,
 890                                GLboolean all, GLint x, GLint y,
 891                                GLint width, GLint height)
 892 {
 893    if (mask & DD_FRONT_LEFT_BIT)
 894                 ClearFront(ctx, all, x, y, width, height);
 895    if (mask & DD_BACK_LEFT_BIT)
 896                 ClearBack(ctx, all, x, y, width, height);
 897
 898         mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
 899         if (mask)
 900                 _swrast_Clear( ctx, mask, all, x, y, width, height );
 901
 902    return;
 903 }
 904
 905
 906 void MesaDriver::ClearFront(struct gl_context *ctx,
 907                          GLboolean all, GLint x, GLint y,
 908                          GLint width, GLint height)
 909 {
 910    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
 911    BGLView *bglview = md->m_bglview;
 912    assert(bglview);
 913
 914    bglview->SetHighColor(md->m_clear_color[BE_RCOMP],
 915                          md->m_clear_color[BE_GCOMP],
 916                          md->m_clear_color[BE_BCOMP],
 917                          md->m_clear_color[BE_ACOMP]);
 918    bglview->SetLowColor(md->m_clear_color[BE_RCOMP],
 919                         md->m_clear_color[BE_GCOMP],
 920                         md->m_clear_color[BE_BCOMP],
 921                         md->m_clear_color[BE_ACOMP]);
 922    if (all) {
 923       BRect b = bglview->Bounds();
 924       bglview->FillRect(b);
 925    }
 926    else {
 927       // XXX untested
 928       BRect b;
 929       b.left = x;
 930       b.right = x + width;
 931       b.bottom = md->m_height - y - 1;
 932       b.top = b.bottom - height;
 933       bglview->FillRect(b);
 934    }
 935
 936    // restore drawing color
 937 #if 0
 938    bglview->SetHighColor(md->mColor[BE_RCOMP],
 939                          md->mColor[BE_GCOMP],
 940                          md->mColor[BE_BCOMP],
 941                          md->mColor[BE_ACOMP]);
 942    bglview->SetLowColor(md->mColor[BE_RCOMP],
 943                         md->mColor[BE_GCOMP],
 944                         md->mColor[BE_BCOMP],
 945                         md->mColor[BE_ACOMP]);
 946 #endif
 947 }
 948
 949
 950 void MesaDriver::ClearBack(struct gl_context *ctx,
 951                         GLboolean all, GLint x, GLint y,
 952                         GLint width, GLint height)
 953 {
 954    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
 955    BGLView *bglview = md->m_bglview;
 956    assert(bglview);
 957    BBitmap *bitmap = md->m_bitmap;
 958    assert(bitmap);
 959    GLuint *start = (GLuint *) bitmap->Bits();
 960    const GLuint *clearPixelPtr = (const GLuint *) md->m_clear_color;
 961    const GLuint clearPixel = B_LENDIAN_TO_HOST_INT32(*clearPixelPtr);
 962
 963    if (all) {
 964       const int numPixels = md->m_width * md->m_height;
 965       if (clearPixel == 0) {
 966          memset(start, 0, numPixels * 4);
 967       }
 968       else {
 969          for (int i = 0; i < numPixels; i++) {
 970              start[i] = clearPixel;
 971          }
 972       }
 973    }
 974    else {
 975       // XXX untested
 976       start += y * md->m_width + x;
 977       for (int i = 0; i < height; i++) {
 978          for (int j = 0; j < width; j++) {
 979             start[j] = clearPixel;
 980          }
 981          start += md->m_width;
 982       }
 983    }
 984 }
 985
 986
 987 void MesaDriver::SetBuffer(struct gl_context *ctx, struct gl_framebuffer *buffer,
 988                             GLenum mode)
 989 {
 990    /* TODO */
 991         (void) ctx;
 992         (void) buffer;
 993         (void) mode;
 994 }
 995
 996 void MesaDriver::GetBufferSize(struct gl_framebuffer * framebuffer, GLuint *width,
 997                             GLuint *height)
 998 {
 999    GET_CURRENT_CONTEXT(ctx);
1000    if (!ctx)
1001                 return;
1002
1003    MesaDriver * md = (MesaDriver *) ctx->DriverCtx;
1004    BGLView *bglview = md->m_bglview;
1005    assert(bglview);
1006
1007    BRect b = bglview->Bounds();
1008    *width = (GLuint) b.IntegerWidth() + 1; // (b.right - b.left + 1);
1009    *height = (GLuint) b.IntegerHeight() + 1; // (b.bottom - b.top + 1);
1010    md->m_bottom = (GLint) b.bottom;
1011
1012    if (ctx->Visual.doubleBufferMode) {
1013       if (*width != md->m_width || *height != md->m_height) {
1014          // allocate new size of back buffer bitmap
1015          if (md->m_bitmap)
1016             delete md->m_bitmap;
1017          BRect rect(0.0, 0.0, *width - 1, *height - 1);
1018          md->m_bitmap = new BBitmap(rect, B_RGBA32);
1019       }
1020    }
1021    else
1022    {
1023       md->m_bitmap = NULL;
1024    }
1025
1026    md->m_width = *width;
1027    md->m_height = *height;
1028 }
1029
1030
1031 void MesaDriver::Viewport(struct gl_context *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
1032 {
1033    /* poll for window size change and realloc software Z/stencil/etc if needed */
1034    _mesa_ResizeBuffersMESA();
1035 }
1036
1037
1038 const GLubyte *MesaDriver::GetString(struct gl_context *ctx, GLenum name)
1039 {
1040    switch (name) {
1041       case GL_RENDERER:
1042          return (const GLubyte *) "Mesa " MESA_VERSION_STRING " powered BGLView (software)";
1043       default:
1044          // Let core library handle all other cases
1045          return NULL;
1046    }
1047 }
1048
1049
1050 // Plot a pixel.  (0,0) is upper-left corner
1051 // This is only used when drawing to the front buffer.
1052 inline void Plot(BGLView *bglview, int x, int y)
1053 {
1054    // XXX There's got to be a better way!
1055    BPoint p(x, y), q(x+1, y);
1056    bglview->StrokeLine(p, q);
1057 }
1058
1059
1060 void MesaDriver::WriteRGBASpanFront(const struct gl_context *ctx, GLuint n,
1061                                  GLint x, GLint y,
1062                                  CONST GLubyte rgba[][4],
1063                                  const GLubyte mask[])
1064 {
1065    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1066    BGLView *bglview = md->m_bglview;
1067    assert(bglview);
1068    int flippedY = md->m_bottom - y;
1069    if (mask) {
1070       for (GLuint i = 0; i < n; i++) {
1071          if (mask[i]) {
1072             bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2], rgba[i][3]);
1073             Plot(bglview, x++, flippedY);
1074          }
1075       }
1076    }
1077    else {
1078       for (GLuint i = 0; i < n; i++) {
1079          bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2], rgba[i][3]);
1080          Plot(bglview, x++, flippedY);
1081       }
1082    }
1083 }
1084
1085 void MesaDriver::WriteRGBSpanFront(const struct gl_context *ctx, GLuint n,
1086                                 GLint x, GLint y,
1087                                 CONST GLubyte rgba[][3],
1088                                 const GLubyte mask[])
1089 {
1090    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1091    BGLView *bglview = md->m_bglview;
1092    assert(bglview);
1093    int flippedY = md->m_bottom - y;
1094    if (mask) {
1095       for (GLuint i = 0; i < n; i++) {
1096          if (mask[i]) {
1097             bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2]);
1098             Plot(bglview, x++, flippedY);
1099          }
1100       }
1101    }
1102    else {
1103       for (GLuint i = 0; i < n; i++) {
1104          bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2]);
1105          Plot(bglview, x++, flippedY);
1106       }
1107    }
1108 }
1109
1110 void MesaDriver::WriteMonoRGBASpanFront(const struct gl_context *ctx, GLuint n,
1111                                      GLint x, GLint y,
1112                                      const GLchan color[4],
1113                                      const GLubyte mask[])
1114 {
1115    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1116    BGLView *bglview = md->m_bglview;
1117    assert(bglview);
1118    int flippedY = md->m_bottom - y;
1119    bglview->SetHighColor(color[RCOMP], color[GCOMP], color[BCOMP]);
1120    if (mask) {
1121       for (GLuint i = 0; i < n; i++) {
1122          if (mask[i]) {
1123             Plot(bglview, x++, flippedY);
1124          }
1125       }
1126    }
1127    else {
1128       for (GLuint i = 0; i < n; i++) {
1129          Plot(bglview, x++, flippedY);
1130       }
1131    }
1132 }
1133
1134 void MesaDriver::WriteRGBAPixelsFront(const struct gl_context *ctx,
1135                                    GLuint n, const GLint x[], const GLint y[],
1136                                    CONST GLubyte rgba[][4],
1137                                    const GLubyte mask[] )
1138 {
1139    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1140    BGLView *bglview = md->m_bglview;
1141    assert(bglview);
1142    if (mask) {
1143       for (GLuint i = 0; i < n; i++) {
1144          if (mask[i]) {
1145             bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2]);
1146             Plot(bglview, x[i], md->m_bottom - y[i]);
1147          }
1148       }
1149    }
1150    else {
1151       for (GLuint i = 0; i < n; i++) {
1152          bglview->SetHighColor(rgba[i][0], rgba[i][1], rgba[i][2]);
1153          Plot(bglview, x[i], md->m_bottom - y[i]);
1154       }
1155    }
1156 }
1157
1158
1159 void MesaDriver::WriteMonoRGBAPixelsFront(const struct gl_context *ctx, GLuint n,
1160                                        const GLint x[], const GLint y[],
1161                                        const GLchan color[4],
1162                                        const GLubyte mask[])
1163 {
1164    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1165    BGLView *bglview = md->m_bglview;
1166    assert(bglview);
1167    // plot points using current color
1168    bglview->SetHighColor(color[RCOMP], color[GCOMP], color[BCOMP]);
1169    if (mask) {
1170       for (GLuint i = 0; i < n; i++) {
1171          if (mask[i]) {
1172             Plot(bglview, x[i], md->m_bottom - y[i]);
1173          }
1174       }
1175    }
1176    else {
1177       for (GLuint i = 0; i < n; i++) {
1178          Plot(bglview, x[i], md->m_bottom - y[i]);
1179       }
1180    }
1181 }
1182
1183
1184 void MesaDriver::WriteCI32SpanFront( const struct gl_context *ctx, GLuint n, GLint x, GLint y,
1185                              const GLuint index[], const GLubyte mask[] )
1186 {
1187         printf("WriteCI32SpanFront() not implemented yet!\n");
1188    // TODO
1189 }
1190
1191 void MesaDriver::WriteCI8SpanFront( const struct gl_context *ctx, GLuint n, GLint x, GLint y,
1192                             const GLubyte index[], const GLubyte mask[] )
1193 {
1194         printf("WriteCI8SpanFront() not implemented yet!\n");
1195    // TODO
1196 }
1197
1198 void MesaDriver::WriteMonoCISpanFront( const struct gl_context *ctx, GLuint n,
1199                                     GLint x, GLint y,
1200                                     GLuint colorIndex, const GLubyte mask[] )
1201 {
1202         printf("WriteMonoCISpanFront() not implemented yet!\n");
1203    // TODO
1204 }
1205
1206
1207 void MesaDriver::WriteCI32PixelsFront( const struct gl_context *ctx, GLuint n,
1208                                     const GLint x[], const GLint y[],
1209                                     const GLuint index[], const GLubyte mask[] )
1210 {
1211         printf("WriteCI32PixelsFront() not implemented yet!\n");
1212    // TODO
1213 }
1214
1215 void MesaDriver::WriteMonoCIPixelsFront( const struct gl_context *ctx, GLuint n,
1216                                       const GLint x[], const GLint y[],
1217                                       GLuint colorIndex, const GLubyte mask[] )
1218 {
1219         printf("WriteMonoCIPixelsFront() not implemented yet!\n");
1220    // TODO
1221 }
1222
1223
1224 void MesaDriver::ReadCI32SpanFront( const struct gl_context *ctx,
1225                                  GLuint n, GLint x, GLint y, GLuint index[] )
1226 {
1227         printf("ReadCI32SpanFront() not implemented yet!\n");
1228   // TODO
1229 }
1230
1231
1232 void MesaDriver::ReadRGBASpanFront( const struct gl_context *ctx, GLuint n,
1233                                  GLint x, GLint y, GLubyte rgba[][4] )
1234 {
1235         printf("ReadRGBASpanFront() not implemented yet!\n");
1236    // TODO
1237 }
1238
1239
1240 void MesaDriver::ReadCI32PixelsFront( const struct gl_context *ctx,
1241                                    GLuint n, const GLint x[], const GLint y[],
1242                                    GLuint indx[], const GLubyte mask[] )
1243 {
1244         printf("ReadCI32PixelsFront() not implemented yet!\n");
1245    // TODO
1246 }
1247
1248
1249 void MesaDriver::ReadRGBAPixelsFront( const struct gl_context *ctx,
1250                                    GLuint n, const GLint x[], const GLint y[],
1251                                    GLubyte rgba[][4], const GLubyte mask[] )
1252 {
1253         printf("ReadRGBAPixelsFront() not implemented yet!\n");
1254    // TODO
1255 }
1256
1257
1258
1259
1260 void MesaDriver::WriteRGBASpanBack(const struct gl_context *ctx, GLuint n,
1261                                  GLint x, GLint y,
1262                                  CONST GLubyte rgba[][4],
1263                                  const GLubyte mask[])
1264 {
1265         MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1266         BBitmap *bitmap = md->m_bitmap;
1267
1268         assert(bitmap);
1269
1270         int row = md->m_bottom - y;
1271         uint8 * ptr = (uint8 *) bitmap->Bits() + (row * bitmap->BytesPerRow()) + x * 4;
1272         uint32 * pixel = (uint32 *) ptr;
1273
1274         if (mask) {
1275                 while(n--) {
1276                         if (*mask++)
1277                                 *pixel = PACK_B_RGBA32(rgba[0]);
1278                         pixel++;
1279                         rgba++;
1280                 };
1281         } else {
1282                 while(n--) {
1283                         *pixel++ = PACK_B_RGBA32(rgba[0]);
1284                         rgba++;
1285                 };
1286         };
1287  }
1288
1289
1290 void MesaDriver::WriteRGBSpanBack(const struct gl_context *ctx, GLuint n,
1291                                 GLint x, GLint y,
1292                                 CONST GLubyte rgb[][3],
1293                                 const GLubyte mask[])
1294 {
1295         MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1296         BBitmap *bitmap = md->m_bitmap;
1297
1298         assert(bitmap);
1299
1300         int row = md->m_bottom - y;
1301         uint8 * ptr = (uint8 *) bitmap->Bits() + (row * bitmap->BytesPerRow()) + x * 4;
1302         uint32 * pixel = (uint32 *) ptr;
1303
1304         if (mask) {
1305                 while(n--) {
1306                         if (*mask++)
1307                                 *pixel = PACK_B_RGB32(rgb[0]);
1308                         pixel++;
1309                         rgb++;
1310                 };
1311         } else {
1312                 while(n--) {
1313                         *pixel++ = PACK_B_RGB32(rgb[0]);
1314                         rgb++;
1315                 };
1316         };
1317 }
1318
1319
1320
1321
1322 void MesaDriver::WriteMonoRGBASpanBack(const struct gl_context *ctx, GLuint n,
1323                                     GLint x, GLint y,
1324                                     const GLchan color[4], const GLubyte mask[])
1325 {
1326         MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1327         BBitmap *bitmap = md->m_bitmap;
1328
1329         assert(bitmap);
1330
1331         int row = md->m_bottom - y;
1332         uint8 * ptr = (uint8 *) bitmap->Bits() + (row * bitmap->BytesPerRow()) + x * 4;
1333         uint32 * pixel = (uint32 *) ptr;
1334         uint32 pixel_color = PACK_B_RGBA32(color);
1335
1336         if (mask) {
1337                 while(n--) {
1338                         if (*mask++)
1339                                 *pixel = pixel_color;
1340                         pixel++;
1341                 };
1342         } else {
1343                 while(n--) {
1344                         *pixel++ = pixel_color;
1345                 };
1346         };
1347 }
1348
1349
1350 void MesaDriver::WriteRGBAPixelsBack(const struct gl_context *ctx,
1351                                    GLuint n, const GLint x[], const GLint y[],
1352                                    CONST GLubyte rgba[][4],
1353                                    const GLubyte mask[] )
1354 {
1355    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1356    BBitmap *bitmap = md->m_bitmap;
1357
1358         assert(bitmap);
1359 #if 0
1360         while(n--) {
1361                 if (*mask++) {
1362                         int row = md->m_bottom - *y;
1363                         uint8 * pixel = (uint8 *) bitmap->Bits() + (row * bitmap->BytesPerRow()) + *x * 4;
1364                         *((uint32 *) pixel) = PACK_B_RGBA32(rgba[0]);
1365                 };
1366                 x++;
1367                 y++;
1368                 rgba++;
1369         };
1370 #else
1371    if (mask) {
1372       for (GLuint i = 0; i < n; i++) {
1373          if (mask[i]) {
1374             GLubyte *pixel = (GLubyte *) bitmap->Bits()
1375             + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1376             pixel[BE_RCOMP] = rgba[i][RCOMP];
1377             pixel[BE_GCOMP] = rgba[i][GCOMP];
1378             pixel[BE_BCOMP] = rgba[i][BCOMP];
1379             pixel[BE_ACOMP] = rgba[i][ACOMP];
1380          }
1381       }
1382    }
1383    else {
1384       for (GLuint i = 0; i < n; i++) {
1385          GLubyte *pixel = (GLubyte *) bitmap->Bits()
1386             + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1387          pixel[BE_RCOMP] = rgba[i][RCOMP];
1388          pixel[BE_GCOMP] = rgba[i][GCOMP];
1389          pixel[BE_BCOMP] = rgba[i][BCOMP];
1390          pixel[BE_ACOMP] = rgba[i][ACOMP];
1391       }
1392    }
1393 #endif
1394 }
1395
1396
1397 void MesaDriver::WriteMonoRGBAPixelsBack(const struct gl_context *ctx, GLuint n,
1398                                       const GLint x[], const GLint y[],
1399                                       const GLchan color[4],
1400                                       const GLubyte mask[])
1401 {
1402         MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1403         BBitmap *bitmap = md->m_bitmap;
1404
1405         assert(bitmap);
1406
1407         uint32 pixel_color = PACK_B_RGBA32(color);
1408 #if 0
1409         while(n--) {
1410                 if (*mask++) {
1411                         int row = md->m_bottom - *y;
1412                         uint8 * pixel = (uint8 *) bitmap->Bits() + (row * bitmap->BytesPerRow()) + *x * 4;
1413
1414                         *((uint32 *) pixel) = pixel_color;
1415                 };
1416                 x++;
1417                 y++;
1418         };
1419 #else
1420    if (mask) {
1421       for (GLuint i = 0; i < n; i++) {
1422          if (mask[i]) {
1423                 GLubyte * ptr = (GLubyte *) bitmap->Bits()
1424                 + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1425             *((uint32 *) ptr) = pixel_color;
1426          }
1427       }
1428    }
1429    else {
1430           for (GLuint i = 0; i < n; i++) {
1431         GLubyte * ptr = (GLubyte *) bitmap->Bits()
1432                         + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1433        *((uint32 *) ptr) = pixel_color;
1434       }
1435    }
1436 #endif
1437 }
1438
1439
1440 void MesaDriver::WriteCI32SpanBack( const struct gl_context *ctx, GLuint n,
1441                                  GLint x, GLint y,
1442                                  const GLuint index[], const GLubyte mask[] )
1443 {
1444         printf("WriteCI32SpanBack() not implemented yet!\n");
1445    // TODO
1446 }
1447
1448 void MesaDriver::WriteCI8SpanBack( const struct gl_context *ctx, GLuint n,
1449                                 GLint x, GLint y,
1450                                 const GLubyte index[], const GLubyte mask[] )
1451 {
1452         printf("WriteCI8SpanBack() not implemented yet!\n");
1453   // TODO
1454 }
1455
1456 void MesaDriver::WriteMonoCISpanBack( const struct gl_context *ctx, GLuint n,
1457                                    GLint x, GLint y,
1458                                    GLuint colorIndex, const GLubyte mask[] )
1459 {
1460         printf("WriteMonoCISpanBack() not implemented yet!\n");
1461    // TODO
1462 }
1463
1464
1465 void MesaDriver::WriteCI32PixelsBack( const struct gl_context *ctx, GLuint n,
1466                                    const GLint x[], const GLint y[],
1467                                    const GLuint index[], const GLubyte mask[] )
1468 {
1469         printf("WriteCI32PixelsBack() not implemented yet!\n");
1470    // TODO
1471 }
1472
1473 void MesaDriver::WriteMonoCIPixelsBack( const struct gl_context *ctx, GLuint n,
1474                                      const GLint x[], const GLint y[],
1475                                      GLuint colorIndex, const GLubyte mask[] )
1476 {
1477         printf("WriteMonoCIPixelsBack() not implemented yet!\n");
1478    // TODO
1479 }
1480
1481
1482 void MesaDriver::ReadCI32SpanBack( const struct gl_context *ctx,
1483                                 GLuint n, GLint x, GLint y, GLuint index[] )
1484 {
1485         printf("ReadCI32SpanBack() not implemented yet!\n");
1486    // TODO
1487 }
1488
1489
1490 void MesaDriver::ReadRGBASpanBack( const struct gl_context *ctx, GLuint n,
1491                                 GLint x, GLint y, GLubyte rgba[][4] )
1492 {
1493    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1494    const BBitmap *bitmap = md->m_bitmap;
1495    assert(bitmap);
1496    int row = md->m_bottom - y;
1497    const GLubyte *pixel = (GLubyte *) bitmap->Bits()
1498                         + (row * bitmap->BytesPerRow()) + x * 4;
1499
1500    for (GLuint i = 0; i < n; i++) {
1501       rgba[i][RCOMP] = pixel[BE_RCOMP];
1502       rgba[i][GCOMP] = pixel[BE_GCOMP];
1503       rgba[i][BCOMP] = pixel[BE_BCOMP];
1504       rgba[i][ACOMP] = pixel[BE_ACOMP];
1505       pixel += 4;
1506    }
1507 }
1508
1509
1510 void MesaDriver::ReadCI32PixelsBack( const struct gl_context *ctx,
1511                                    GLuint n, const GLint x[], const GLint y[],
1512                                    GLuint indx[], const GLubyte mask[] )
1513 {
1514         printf("ReadCI32PixelsBack() not implemented yet!\n");
1515    // TODO
1516 }
1517
1518
1519 void MesaDriver::ReadRGBAPixelsBack( const struct gl_context *ctx,
1520                                   GLuint n, const GLint x[], const GLint y[],
1521                                   GLubyte rgba[][4], const GLubyte mask[] )
1522 {
1523    MesaDriver *md = (MesaDriver *) ctx->DriverCtx;
1524    const BBitmap *bitmap = md->m_bitmap;
1525    assert(bitmap);
1526
1527    if (mask) {
1528       for (GLuint i = 0; i < n; i++) {
1529          if (mask[i]) {
1530             GLubyte *pixel = (GLubyte *) bitmap->Bits()
1531             + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1532                  rgba[i][RCOMP] = pixel[BE_RCOMP];
1533              rgba[i][GCOMP] = pixel[BE_GCOMP];
1534                  rgba[i][BCOMP] = pixel[BE_BCOMP];
1535                  rgba[i][ACOMP] = pixel[BE_ACOMP];
1536          };
1537       };
1538    } else {
1539       for (GLuint i = 0; i < n; i++) {
1540          GLubyte *pixel = (GLubyte *) bitmap->Bits()
1541             + ((md->m_bottom - y[i]) * bitmap->BytesPerRow()) + x[i] * 4;
1542          rgba[i][RCOMP] = pixel[BE_RCOMP];
1543          rgba[i][GCOMP] = pixel[BE_GCOMP];
1544          rgba[i][BCOMP] = pixel[BE_BCOMP];
1545          rgba[i][ACOMP] = pixel[BE_ACOMP];
1546       };
1547    };
1548 }
1549
1550 const char * color_space_name(color_space space)
1551 {
1552 #define C2N(a)  case a: return #a
1553
1554         switch (space) {
1555         C2N(B_RGB24);
1556         C2N(B_RGB32);
1557         C2N(B_RGBA32);
1558         C2N(B_RGB32_BIG);
1559         C2N(B_RGBA32_BIG);
1560         C2N(B_GRAY8);
1561         C2N(B_GRAY1);
1562         C2N(B_RGB16);
1563         C2N(B_RGB15);
1564         C2N(B_RGBA15);
1565         C2N(B_CMAP8);
1566         default:
1567                 return "Unknown!";
1568         };
1569
1570 #undef C2N
1571 };
1572
1573