src/mesa/drivers/dri/i810/i810context.c

   1 /**************************************************************************
   2
   3 Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
   4 All Rights Reserved.
   5
   6 Permission is hereby granted, free of charge, to any person obtaining a
   7 copy of this software and associated documentation files (the
   8 "Software"), to deal in the Software without restriction, including
   9 without limitation the rights to use, copy, modify, merge, publish,
  10 distribute, sub license, and/or sell copies of the Software, and to
  11 permit persons to whom the Software is furnished to do so, subject to
  12 the following conditions:
  13
  14 The above copyright notice and this permission notice (including the
  15 next paragraph) shall be included in all copies or substantial portions
  16 of the Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21 IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
  22 ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23 TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24 SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Keith Whitwell <keith@tungstengraphics.com>
  31  *
  32  */
  33
  34
  35 #include "main/glheader.h"
  36 #include "main/context.h"
  37 #include "main/matrix.h"
  38 #include "main/simple_list.h"
  39 #include "main/extensions.h"
  40 #include "main/framebuffer.h"
  41 #include "main/imports.h"
  42 #include "main/points.h"
  43
  44 #include "swrast/swrast.h"
  45 #include "swrast_setup/swrast_setup.h"
  46 #include "tnl/tnl.h"
  47 #include "vbo/vbo.h"
  48
  49 #include "tnl/t_pipeline.h"
  50
  51 #include "drivers/common/driverfuncs.h"
  52
  53 #include "i810screen.h"
  54 #include "i810_dri.h"
  55
  56 #include "i810state.h"
  57 #include "i810tex.h"
  58 #include "i810span.h"
  59 #include "i810tris.h"
  60 #include "i810vb.h"
  61 #include "i810ioctl.h"
  62
  63 #include "drirenderbuffer.h"
  64 #include "utils.h"
  65
  66 #define need_GL_ARB_multisample
  67 #define need_GL_ARB_texture_compression
  68 #define need_GL_ARB_vertex_buffer_object
  69 #include "extension_helper.h"
  70
  71 #ifndef I810_DEBUG
  72 int I810_DEBUG = (0);
  73 #endif
  74
  75 PUBLIC const char __driConfigOptions[] = { 0 };
  76 const GLuint __driNConfigOptions = 0;
  77
  78 #define DRIVER_DATE                     "20050821"
  79
  80 static const GLubyte *i810GetString( GLcontext *ctx, GLenum name )
  81 {
  82    static char buffer[128];
  83
  84    switch (name) {
  85    case GL_VENDOR:
  86       return (GLubyte *)"Keith Whitwell";
  87    case GL_RENDERER: {
  88       i810ContextPtr imesa = I810_CONTEXT(ctx);
  89       const char * chipset;
  90
  91       switch (imesa->i810Screen->deviceID) {
  92       case PCI_CHIP_I810:       chipset = "i810"; break;
  93       case PCI_CHIP_I810_DC100: chipset = "i810 DC-100"; break;
  94       case PCI_CHIP_I810_E:     chipset = "i810E"; break;
  95       case PCI_CHIP_I815:       chipset = "i815"; break;
  96       default:                  chipset = "Unknown i810-class Chipset"; break;
  97       }
  98
  99       (void) driGetRendererString( buffer, chipset, DRIVER_DATE, 0 );
 100       return (GLubyte *) buffer;
 101    }
 102    default:
 103       return 0;
 104    }
 105 }
 106
 107 static void i810BufferSize(GLframebuffer *buffer, GLuint *width, GLuint *height)
 108 {
 109    GET_CURRENT_CONTEXT(ctx);
 110    i810ContextPtr imesa = I810_CONTEXT(ctx);
 111
 112    /* Need to lock to make sure the driDrawable is uptodate.  This
 113     * information is used to resize Mesa's software buffers, so it has
 114     * to be correct.
 115     */
 116    LOCK_HARDWARE(imesa);
 117    *width = imesa->driDrawable->w;
 118    *height = imesa->driDrawable->h;
 119    UNLOCK_HARDWARE(imesa);
 120 }
 121
 122 /* Extension strings exported by the i810 driver.
 123  */
 124 const struct dri_extension card_extensions[] =
 125 {
 126     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 127     { "GL_ARB_multitexture",               NULL },
 128     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 129     { "GL_ARB_texture_env_add",            NULL },
 130     { "GL_ARB_texture_env_combine",        NULL },
 131     { "GL_ARB_texture_env_crossbar",       NULL },
 132     { "GL_ARB_texture_mirrored_repeat",    NULL },
 133     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 134     { "GL_EXT_stencil_wrap",               NULL },
 135     { "GL_EXT_texture_edge_clamp",         NULL },
 136     { "GL_EXT_texture_env_combine",        NULL },
 137     { "GL_EXT_texture_lod_bias",           NULL },
 138     { "GL_EXT_texture_rectangle",          NULL },
 139     { "GL_MESA_ycbcr_texture",             NULL },
 140     { "GL_NV_blend_square",                NULL },
 141     { "GL_SGIS_generate_mipmap",           NULL },
 142     { NULL,                                NULL }
 143 };
 144
 145 extern const struct tnl_pipeline_stage _i810_render_stage;
 146
 147 static const struct tnl_pipeline_stage *i810_pipeline[] = {
 148    &_tnl_vertex_transform_stage,
 149    &_tnl_normal_transform_stage,
 150    &_tnl_lighting_stage,
 151    &_tnl_fog_coordinate_stage,
 152    &_tnl_texgen_stage,
 153    &_tnl_texture_transform_stage,
 154                                 /* REMOVE: point attenuation stage */
 155 #if 1
 156    &_i810_render_stage,         /* ADD: unclipped rastersetup-to-dma */
 157 #endif
 158    &_tnl_render_stage,
 159    0,
 160 };
 161
 162 static const struct dri_debug_control debug_control[] =
 163 {
 164     { "fall",  DEBUG_FALLBACKS },
 165     { "tex",   DEBUG_TEXTURE },
 166     { "ioctl", DEBUG_IOCTL },
 167     { "prim",  DEBUG_PRIMS },
 168     { "vert",  DEBUG_VERTS },
 169     { "state", DEBUG_STATE },
 170     { "verb",  DEBUG_VERBOSE },
 171     { "dri",   DEBUG_DRI },
 172     { "dma",   DEBUG_DMA },
 173     { "san",   DEBUG_SANITY },
 174     { "sync",  DEBUG_SYNC },
 175     { "sleep", DEBUG_SLEEP },
 176     { NULL,    0 }
 177 };
 178
 179 GLboolean
 180 i810CreateContext( const __GLcontextModes *mesaVis,
 181                    __DRIcontextPrivate *driContextPriv,
 182                    void *sharedContextPrivate )
 183 {
 184    GLcontext *ctx, *shareCtx;
 185    i810ContextPtr imesa;
 186    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 187    i810ScreenPrivate *i810Screen = (i810ScreenPrivate *)sPriv->private;
 188    I810SAREAPtr saPriv = (I810SAREAPtr)
 189       (((GLubyte *)sPriv->pSAREA) + i810Screen->sarea_priv_offset);
 190    struct dd_function_table functions;
 191
 192    /* Allocate i810 context */
 193    imesa = (i810ContextPtr) CALLOC_STRUCT(i810_context_t);
 194    if (!imesa) {
 195       return GL_FALSE;
 196    }
 197
 198    driContextPriv->driverPrivate = imesa;
 199
 200    imesa->i810Screen = i810Screen;
 201    imesa->driScreen = sPriv;
 202    imesa->sarea = saPriv;
 203    imesa->glBuffer = NULL;
 204
 205    /* Init default driver functions then plug in our I810-specific functions
 206     * (the texture functions are especially important)
 207     */
 208    _mesa_init_driver_functions( &functions );
 209    i810InitIoctlFuncs( &functions );
 210    i810InitTextureFuncs( &functions );
 211
 212
 213    /* Allocate the Mesa context */
 214    if (sharedContextPrivate)
 215       shareCtx = ((i810ContextPtr) sharedContextPrivate)->glCtx;
 216    else
 217       shareCtx = NULL;
 218    imesa->glCtx = _mesa_create_context(mesaVis, shareCtx,
 219                                        &functions, (void*) imesa);
 220    if (!imesa->glCtx) {
 221       FREE(imesa);
 222       return GL_FALSE;
 223    }
 224
 225    (void) memset( imesa->texture_heaps, 0, sizeof( imesa->texture_heaps ) );
 226    make_empty_list( & imesa->swapped );
 227
 228    imesa->nr_heaps = 1;
 229    imesa->texture_heaps[0] = driCreateTextureHeap( 0, imesa,
 230             i810Screen->textureSize,
 231             12,
 232             I810_NR_TEX_REGIONS,
 233             imesa->sarea->texList,
 234             (unsigned *) & imesa->sarea->texAge, /* XXX we shouldn't cast! */
 235             & imesa->swapped,
 236             sizeof( struct i810_texture_object_t ),
 237             (destroy_texture_object_t *) i810DestroyTexObj );
 238
 239
 240
 241    /* Set the maximum texture size small enough that we can guarentee
 242     * that both texture units can bind a maximal texture and have them
 243     * in memory at once.
 244     */
 245
 246
 247
 248    ctx = imesa->glCtx;
 249    ctx->Const.MaxTextureUnits = 2;
 250    ctx->Const.MaxTextureImageUnits = 2;
 251    ctx->Const.MaxTextureCoordUnits = 2;
 252
 253
 254    /* FIXME: driCalcualteMaxTextureLevels assumes that mipmaps are tightly
 255     * FIXME: packed, but they're not in Intel graphics hardware.
 256     */
 257    driCalculateMaxTextureLevels( imesa->texture_heaps,
 258                                  imesa->nr_heaps,
 259                                  & ctx->Const,
 260                                  4,
 261                                  11, /* max 2D texture size is 2048x2048 */
 262                                  0,  /* 3D textures unsupported */
 263                                  0,  /* cube textures unsupported. */
 264                                  0,  /* texture rectangles unsupported. */
 265                                  12,
 266                                  GL_FALSE,
 267                                  0 );
 268
 269    ctx->Const.MinLineWidth = 1.0;
 270    ctx->Const.MinLineWidthAA = 1.0;
 271    ctx->Const.MaxLineWidth = 3.0;
 272    ctx->Const.MaxLineWidthAA = 3.0;
 273    ctx->Const.LineWidthGranularity = 1.0;
 274
 275    ctx->Const.MinPointSize = 1.0;
 276    ctx->Const.MinPointSizeAA = 1.0;
 277    ctx->Const.MaxPointSize = 3.0;
 278    ctx->Const.MaxPointSizeAA = 3.0;
 279    ctx->Const.PointSizeGranularity = 1.0;
 280
 281    /* reinitialize the context point state.
 282     * It depend on constants in __GLcontextRec::Const
 283     */
 284    _mesa_init_point(ctx);
 285
 286    ctx->Driver.GetBufferSize = i810BufferSize;
 287    ctx->Driver.GetString = i810GetString;
 288
 289    /* Who owns who?
 290     */
 291    ctx->DriverCtx = (void *) imesa;
 292    imesa->glCtx = ctx;
 293
 294    /* Initialize the software rasterizer and helper modules.
 295     */
 296    _swrast_CreateContext( ctx );
 297    _vbo_CreateContext( ctx );
 298    _tnl_CreateContext( ctx );
 299    _swsetup_CreateContext( ctx );
 300
 301    /* Install the customized pipeline:
 302     */
 303    _tnl_destroy_pipeline( ctx );
 304    _tnl_install_pipeline( ctx, i810_pipeline );
 305
 306    /* Configure swrast and T&L to match hardware characteristics:
 307     */
 308    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 309    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 310    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 311    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 312
 313    /* Dri stuff
 314     */
 315    imesa->hHWContext = driContextPriv->hHWContext;
 316    imesa->driFd = sPriv->fd;
 317    imesa->driHwLock = &sPriv->pSAREA->lock;
 318
 319    imesa->stipple_in_hw = 1;
 320    imesa->RenderIndex = ~0;
 321    imesa->dirty = I810_UPLOAD_CTX|I810_UPLOAD_BUFFERS;
 322    imesa->upload_cliprects = GL_TRUE;
 323
 324    imesa->CurrentTexObj[0] = 0;
 325    imesa->CurrentTexObj[1] = 0;
 326
 327    _math_matrix_ctr( &imesa->ViewportMatrix );
 328
 329    driInitExtensions( ctx, card_extensions, GL_TRUE );
 330    /* XXX these should really go right after _mesa_init_driver_functions() */
 331    i810InitStateFuncs( ctx );
 332    i810InitTriFuncs( ctx );
 333    i810InitSpanFuncs( ctx );
 334    i810InitVB( ctx );
 335    i810InitState( ctx );
 336
 337 #if DO_DEBUG
 338    I810_DEBUG  = driParseDebugString( getenv( "I810_DEBUG" ),
 339                                       debug_control );
 340    I810_DEBUG |= driParseDebugString( getenv( "INTEL_DEBUG" ),
 341                                       debug_control );
 342 #endif
 343
 344    return GL_TRUE;
 345 }
 346
 347 void
 348 i810DestroyContext(__DRIcontextPrivate *driContextPriv)
 349 {
 350    i810ContextPtr imesa = (i810ContextPtr) driContextPriv->driverPrivate;
 351
 352    assert(imesa); /* should never be null */
 353    if (imesa) {
 354       GLboolean   release_texture_heaps;
 355
 356
 357       release_texture_heaps = (imesa->glCtx->Shared->RefCount == 1);
 358       _swsetup_DestroyContext( imesa->glCtx );
 359       _tnl_DestroyContext( imesa->glCtx );
 360       _vbo_DestroyContext( imesa->glCtx );
 361       _swrast_DestroyContext( imesa->glCtx );
 362
 363       i810FreeVB( imesa->glCtx );
 364
 365       /* free the Mesa context */
 366       imesa->glCtx->DriverCtx = NULL;
 367       _mesa_destroy_context(imesa->glCtx);
 368       if ( release_texture_heaps ) {
 369          /* This share group is about to go away, free our private
 370           * texture object data.
 371           */
 372          unsigned int i;
 373
 374          for ( i = 0 ; i < imesa->nr_heaps ; i++ ) {
 375             driDestroyTextureHeap( imesa->texture_heaps[ i ] );
 376             imesa->texture_heaps[ i ] = NULL;
 377          }
 378
 379          assert( is_empty_list( & imesa->swapped ) );
 380       }
 381
 382       FREE(imesa);
 383    }
 384 }
 385
 386
 387 void i810XMesaSetFrontClipRects( i810ContextPtr imesa )
 388 {
 389    __DRIdrawablePrivate *dPriv = imesa->driDrawable;
 390
 391    imesa->numClipRects = dPriv->numClipRects;
 392    imesa->pClipRects = dPriv->pClipRects;
 393    imesa->drawX = dPriv->x;
 394    imesa->drawY = dPriv->y;
 395
 396    i810EmitDrawingRectangle( imesa );
 397    imesa->upload_cliprects = GL_TRUE;
 398 }
 399
 400
 401 void i810XMesaSetBackClipRects( i810ContextPtr imesa )
 402 {
 403    __DRIdrawablePrivate *dPriv = imesa->driDrawable;
 404
 405    if (imesa->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0)
 406    {
 407       imesa->numClipRects = dPriv->numClipRects;
 408       imesa->pClipRects = dPriv->pClipRects;
 409       imesa->drawX = dPriv->x;
 410       imesa->drawY = dPriv->y;
 411    } else {
 412       imesa->numClipRects = dPriv->numBackClipRects;
 413       imesa->pClipRects = dPriv->pBackClipRects;
 414       imesa->drawX = dPriv->backX;
 415       imesa->drawY = dPriv->backY;
 416    }
 417
 418    i810EmitDrawingRectangle( imesa );
 419    imesa->upload_cliprects = GL_TRUE;
 420 }
 421
 422
 423 static void i810XMesaWindowMoved( i810ContextPtr imesa )
 424 {
 425    /* Determine current color drawing buffer */
 426    switch (imesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0]) {
 427    case BUFFER_FRONT_LEFT:
 428       i810XMesaSetFrontClipRects( imesa );
 429       break;
 430    case BUFFER_BACK_LEFT:
 431       i810XMesaSetBackClipRects( imesa );
 432       break;
 433    default:
 434       /* glDrawBuffer(GL_NONE or GL_FRONT_AND_BACK): software fallback */
 435       i810XMesaSetFrontClipRects( imesa );
 436    }
 437 }
 438
 439
 440 GLboolean
 441 i810UnbindContext(__DRIcontextPrivate *driContextPriv)
 442 {
 443    i810ContextPtr imesa = (i810ContextPtr) driContextPriv->driverPrivate;
 444    if (imesa) {
 445       imesa->dirty = I810_UPLOAD_CTX|I810_UPLOAD_BUFFERS;
 446       if (imesa->CurrentTexObj[0]) imesa->dirty |= I810_UPLOAD_TEX0;
 447       if (imesa->CurrentTexObj[1]) imesa->dirty |= I810_UPLOAD_TEX1;
 448    }
 449
 450    return GL_TRUE;
 451 }
 452
 453
 454 GLboolean
 455 i810MakeCurrent(__DRIcontextPrivate *driContextPriv,
 456                 __DRIdrawablePrivate *driDrawPriv,
 457                 __DRIdrawablePrivate *driReadPriv)
 458 {
 459    if (driContextPriv) {
 460       i810ContextPtr imesa = (i810ContextPtr) driContextPriv->driverPrivate;
 461
 462       /* Shouldn't the readbuffer be stored also?
 463        */
 464       imesa->driDrawable = driDrawPriv;
 465
 466       _mesa_make_current(imesa->glCtx,
 467                          (GLframebuffer *) driDrawPriv->driverPrivate,
 468                          (GLframebuffer *) driReadPriv->driverPrivate);
 469
 470       /* Are these necessary?
 471        */
 472       i810XMesaWindowMoved( imesa );
 473    }
 474    else {
 475       _mesa_make_current(NULL, NULL, NULL);
 476    }
 477
 478    return GL_TRUE;
 479 }
 480
 481 static void
 482 i810UpdatePageFlipping( i810ContextPtr imesa )
 483 {
 484    GLcontext *ctx = imesa->glCtx;
 485    int front = 0;
 486
 487    /* Determine current color drawing buffer */
 488    switch (ctx->DrawBuffer->_ColorDrawBufferIndexes[0]) {
 489    case BUFFER_FRONT_LEFT:
 490       front = 1;
 491       break;
 492    case BUFFER_BACK_LEFT:
 493       front = 0;
 494       break;
 495    default:
 496       return;
 497    }
 498
 499    if ( imesa->sarea->pf_current_page == 1 )
 500      front ^= 1;
 501
 502    driFlipRenderbuffers(ctx->WinSysDrawBuffer, front);
 503
 504    if (front) {
 505       imesa->BufferSetup[I810_DESTREG_DI1] = imesa->i810Screen->fbOffset | imesa->i810Screen->backPitchBits;
 506    } else {
 507       imesa->BufferSetup[I810_DESTREG_DI1] = imesa->i810Screen->backOffset | imesa->i810Screen->backPitchBits;
 508    }
 509
 510    imesa->dirty |= I810_UPLOAD_BUFFERS;
 511 }
 512
 513 void i810GetLock( i810ContextPtr imesa, GLuint flags )
 514 {
 515    __DRIdrawablePrivate *dPriv = imesa->driDrawable;
 516    __DRIscreenPrivate *sPriv = imesa->driScreen;
 517    I810SAREAPtr sarea = imesa->sarea;
 518    int me = imesa->hHWContext;
 519    unsigned i;
 520
 521    drmGetLock(imesa->driFd, imesa->hHWContext, flags);
 522
 523    /* If the window moved, may need to set a new cliprect now.
 524     *
 525     * NOTE: This releases and regains the hw lock, so all state
 526     * checking must be done *after* this call:
 527     */
 528    DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 529
 530
 531    /* If we lost context, need to dump all registers to hardware.
 532     * Note that we don't care about 2d contexts, even if they perform
 533     * accelerated commands, so the DRI locking in the X server is even
 534     * more broken than usual.
 535     */
 536    if (sarea->ctxOwner != me) {
 537       driUpdateFramebufferSize(imesa->glCtx, dPriv);
 538       imesa->upload_cliprects = GL_TRUE;
 539       imesa->dirty = I810_UPLOAD_CTX|I810_UPLOAD_BUFFERS;
 540       if (imesa->CurrentTexObj[0]) imesa->dirty |= I810_UPLOAD_TEX0;
 541       if (imesa->CurrentTexObj[1]) imesa->dirty |= I810_UPLOAD_TEX1;
 542       sarea->ctxOwner = me;
 543    }
 544
 545    /* Shared texture managment - if another client has played with
 546     * texture space, figure out which if any of our textures have been
 547     * ejected, and update our global LRU.
 548     */
 549    for ( i = 0 ; i < imesa->nr_heaps ; i++ ) {
 550       DRI_AGE_TEXTURES( imesa->texture_heaps[ i ] );
 551    }
 552
 553    if (imesa->lastStamp != dPriv->lastStamp) {
 554       i810UpdatePageFlipping( imesa );
 555       i810XMesaWindowMoved( imesa );
 556       imesa->lastStamp = dPriv->lastStamp;
 557    }
 558 }
 559
 560
 561 void
 562 i810SwapBuffers( __DRIdrawablePrivate *dPriv )
 563 {
 564    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 565       i810ContextPtr imesa;
 566       GLcontext *ctx;
 567       imesa = (i810ContextPtr) dPriv->driContextPriv->driverPrivate;
 568       ctx = imesa->glCtx;
 569       if (ctx->Visual.doubleBufferMode) {
 570          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 571          if ( imesa->sarea->pf_active ) {
 572             i810PageFlip( dPriv );
 573          } else {
 574             i810CopyBuffer( dPriv );
 575          }
 576       }
 577    }
 578    else {
 579       /* XXX this shouldn't be an error but we can't handle it for now */
 580       _mesa_problem(NULL, "i810SwapBuffers: drawable has no context!\n");
 581    }
 582 }
 583