src/mesa/drivers/dri/savage/savage_xmesa.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #include <X11/Xlibint.h>
  27 #include <stdio.h>
  28
  29 #include "savagecontext.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "framebuffer.h"
  33 #include "renderbuffer.h"
  34 #include "simple_list.h"
  35
  36 #include "utils.h"
  37
  38 #include "extensions.h"
  39
  40 #include "swrast/swrast.h"
  41 #include "swrast_setup/swrast_setup.h"
  42 #include "tnl/tnl.h"
  43 #include "vbo/vbo.h"
  44
  45 #include "tnl/t_pipeline.h"
  46
  47 #include "drivers/common/driverfuncs.h"
  48
  49 #include "savagedd.h"
  50 #include "savagestate.h"
  51 #include "savagetex.h"
  52 #include "savagespan.h"
  53 #include "savagetris.h"
  54 #include "savageioctl.h"
  55 #include "savage_bci.h"
  56
  57 #include "savage_dri.h"
  58
  59 #include "drirenderbuffer.h"
  60 #include "texmem.h"
  61
  62 #define need_GL_ARB_multisample
  63 #define need_GL_ARB_texture_compression
  64 #define need_GL_ARB_vertex_buffer_object
  65 #define need_GL_EXT_secondary_color
  66 #include "extension_helper.h"
  67
  68 #include "xmlpool.h"
  69
  70 /* Driver-specific options
  71  */
  72 #define SAVAGE_ENABLE_VDMA(def) \
  73 DRI_CONF_OPT_BEGIN(enable_vdma,bool,def) \
  74         DRI_CONF_DESC(en,"Use DMA for vertex transfers") \
  75         DRI_CONF_DESC(de,"Benutze DMA für Vertextransfers") \
  76 DRI_CONF_OPT_END
  77 #define SAVAGE_ENABLE_FASTPATH(def) \
  78 DRI_CONF_OPT_BEGIN(enable_fastpath,bool,def) \
  79         DRI_CONF_DESC(en,"Use fast path for unclipped primitives") \
  80         DRI_CONF_DESC(de,"Schneller Codepfad für ungeschnittene Polygone") \
  81 DRI_CONF_OPT_END
  82 #define SAVAGE_SYNC_FRAMES(def) \
  83 DRI_CONF_OPT_BEGIN(sync_frames,bool,def) \
  84         DRI_CONF_DESC(en,"Synchronize with graphics hardware after each frame") \
  85         DRI_CONF_DESC(de,"Synchronisiere nach jedem Frame mit Grafikhardware") \
  86 DRI_CONF_OPT_END
  87
  88 /* Configuration
  89  */
  90 PUBLIC const char __driConfigOptions[] =
  91 DRI_CONF_BEGIN
  92     DRI_CONF_SECTION_QUALITY
  93         DRI_CONF_TEXTURE_DEPTH(DRI_CONF_TEXTURE_DEPTH_FB)
  94         DRI_CONF_COLOR_REDUCTION(DRI_CONF_COLOR_REDUCTION_DITHER)
  95         DRI_CONF_FLOAT_DEPTH(false)
  96     DRI_CONF_SECTION_END
  97     DRI_CONF_SECTION_PERFORMANCE
  98         SAVAGE_ENABLE_VDMA(true)
  99         SAVAGE_ENABLE_FASTPATH(true)
 100         SAVAGE_SYNC_FRAMES(false)
 101         DRI_CONF_MAX_TEXTURE_UNITS(2,1,2)
 102         DRI_CONF_TEXTURE_HEAPS(DRI_CONF_TEXTURE_HEAPS_ALL)
 103         DRI_CONF_FORCE_S3TC_ENABLE(false)
 104     DRI_CONF_SECTION_END
 105     DRI_CONF_SECTION_DEBUG
 106         DRI_CONF_NO_RAST(false)
 107     DRI_CONF_SECTION_END
 108 DRI_CONF_END;
 109 static const GLuint __driNConfigOptions = 10;
 110
 111
 112 static const struct dri_debug_control debug_control[] =
 113 {
 114     { "fall",  DEBUG_FALLBACKS },
 115     { "api",   DEBUG_VERBOSE_API },
 116     { "tex",   DEBUG_VERBOSE_TEX },
 117     { "verb",  DEBUG_VERBOSE_MSG },
 118     { "dma",   DEBUG_DMA },
 119     { "state", DEBUG_STATE },
 120     { NULL,    0 }
 121 };
 122 #ifndef SAVAGE_DEBUG
 123 int SAVAGE_DEBUG = 0;
 124 #endif
 125
 126
 127 /*For time caculating test*/
 128 #if defined(DEBUG_TIME) && DEBUG_TIME
 129 struct timeval tv_s,tv_f;
 130 unsigned long time_sum=0;
 131 struct timeval tv_s1,tv_f1;
 132 #endif
 133
 134 static const struct dri_extension card_extensions[] =
 135 {
 136     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 137     { "GL_ARB_multitexture",               NULL },
 138     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 139     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 140     { "GL_EXT_stencil_wrap",               NULL },
 141     { "GL_EXT_texture_lod_bias",           NULL },
 142     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 143     { NULL,                                NULL }
 144 };
 145
 146 static const struct dri_extension s4_extensions[] =
 147 {
 148     { "GL_ARB_texture_env_add",            NULL },
 149     { "GL_ARB_texture_mirrored_repeat",    NULL },
 150     { NULL,                                NULL }
 151 };
 152
 153 extern struct tnl_pipeline_stage _savage_texnorm_stage;
 154 extern struct tnl_pipeline_stage _savage_render_stage;
 155
 156 static const struct tnl_pipeline_stage *savage_pipeline[] = {
 157
 158    &_tnl_vertex_transform_stage,
 159    &_tnl_normal_transform_stage,
 160    &_tnl_lighting_stage,
 161    &_tnl_fog_coordinate_stage,
 162    &_tnl_texgen_stage,
 163    &_tnl_texture_transform_stage,
 164    &_savage_texnorm_stage,
 165    &_savage_render_stage,
 166    &_tnl_render_stage,
 167    0,
 168 };
 169
 170
 171 /* this is first function called in dirver*/
 172
 173 static GLboolean
 174 savageInitDriver(__DRIscreenPrivate *sPriv)
 175 {
 176   savageScreenPrivate *savageScreen;
 177   SAVAGEDRIPtr         gDRIPriv = (SAVAGEDRIPtr)sPriv->pDevPriv;
 178    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 179      (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
 180
 181
 182    if (sPriv->devPrivSize != sizeof(SAVAGEDRIRec)) {
 183       fprintf(stderr,"\nERROR!  sizeof(SAVAGEDRIRec) does not match passed size from device driver\n");
 184       return GL_FALSE;
 185    }
 186
 187    /* Allocate the private area */
 188    savageScreen = (savageScreenPrivate *)Xmalloc(sizeof(savageScreenPrivate));
 189    if (!savageScreen)
 190       return GL_FALSE;
 191
 192    savageScreen->driScrnPriv = sPriv;
 193    sPriv->private = (void *)savageScreen;
 194
 195    savageScreen->chipset=gDRIPriv->chipset;
 196    savageScreen->width=gDRIPriv->width;
 197    savageScreen->height=gDRIPriv->height;
 198    savageScreen->mem=gDRIPriv->mem;
 199    savageScreen->cpp=gDRIPriv->cpp;
 200    savageScreen->zpp=gDRIPriv->zpp;
 201
 202    savageScreen->agpMode=gDRIPriv->agpMode;
 203
 204    savageScreen->bufferSize=gDRIPriv->bufferSize;
 205
 206    if (gDRIPriv->cpp == 4)
 207        savageScreen->frontFormat = DV_PF_8888;
 208    else
 209        savageScreen->frontFormat = DV_PF_565;
 210    savageScreen->frontOffset=gDRIPriv->frontOffset;
 211    savageScreen->backOffset = gDRIPriv->backOffset;
 212    savageScreen->depthOffset=gDRIPriv->depthOffset;
 213
 214    savageScreen->textureOffset[SAVAGE_CARD_HEAP] =
 215                                    gDRIPriv->textureOffset;
 216    savageScreen->textureSize[SAVAGE_CARD_HEAP] =
 217                                    gDRIPriv->textureSize;
 218    savageScreen->logTextureGranularity[SAVAGE_CARD_HEAP] =
 219                                    gDRIPriv->logTextureGranularity;
 220
 221    savageScreen->textureOffset[SAVAGE_AGP_HEAP] =
 222                                    gDRIPriv->agpTextureHandle;
 223    savageScreen->textureSize[SAVAGE_AGP_HEAP] =
 224                                    gDRIPriv->agpTextureSize;
 225    savageScreen->logTextureGranularity[SAVAGE_AGP_HEAP] =
 226                                    gDRIPriv->logAgpTextureGranularity;
 227
 228    savageScreen->agpTextures.handle = gDRIPriv->agpTextureHandle;
 229    savageScreen->agpTextures.size   = gDRIPriv->agpTextureSize;
 230    if (gDRIPriv->agpTextureSize) {
 231        if (drmMap(sPriv->fd,
 232                   savageScreen->agpTextures.handle,
 233                   savageScreen->agpTextures.size,
 234                   (drmAddress *)&(savageScreen->agpTextures.map)) != 0) {
 235            Xfree(savageScreen);
 236            sPriv->private = NULL;
 237            return GL_FALSE;
 238        }
 239    } else
 240        savageScreen->agpTextures.map = NULL;
 241
 242    savageScreen->texVirtual[SAVAGE_CARD_HEAP] =
 243              (drmAddress)(((GLubyte *)sPriv->pFB)+gDRIPriv->textureOffset);
 244    savageScreen->texVirtual[SAVAGE_AGP_HEAP] =
 245                         (drmAddress)(savageScreen->agpTextures.map);
 246
 247    savageScreen->aperture.handle = gDRIPriv->apertureHandle;
 248    savageScreen->aperture.size   = gDRIPriv->apertureSize;
 249    savageScreen->aperturePitch   = gDRIPriv->aperturePitch;
 250    if (drmMap(sPriv->fd,
 251               savageScreen->aperture.handle,
 252               savageScreen->aperture.size,
 253               (drmAddress *)&savageScreen->aperture.map) != 0)
 254    {
 255       Xfree(savageScreen);
 256       sPriv->private = NULL;
 257       return GL_FALSE;
 258    }
 259
 260    savageScreen->bufs = drmMapBufs(sPriv->fd);
 261
 262    savageScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 263
 264    /* parse information in __driConfigOptions */
 265    driParseOptionInfo (&savageScreen->optionCache,
 266                        __driConfigOptions, __driNConfigOptions);
 267
 268    if (glx_enable_extension != NULL) {
 269       (*glx_enable_extension)(sPriv->psc->screenConfigs,
 270                               "GLX_SGI_make_current_read");
 271    }
 272
 273 #if 0
 274    savageDDFastPathInit();
 275    savageDDTrifuncInit();
 276    savageDDSetupInit();
 277 #endif
 278    return GL_TRUE;
 279 }
 280
 281 /* Accessed by dlsym from dri_mesa_init.c
 282  */
 283 static void
 284 savageDestroyScreen(__DRIscreenPrivate *sPriv)
 285 {
 286    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 287
 288    if (savageScreen->bufs)
 289        drmUnmapBufs(savageScreen->bufs);
 290
 291    /* free all option information */
 292    driDestroyOptionInfo (&savageScreen->optionCache);
 293
 294    Xfree(savageScreen);
 295    sPriv->private = NULL;
 296 }
 297
 298 #if 0
 299 GLvisual *XMesaCreateVisual(Display *dpy,
 300                             __DRIscreenPrivate *driScrnPriv,
 301                             const XVisualInfo *visinfo,
 302                             const __GLXvisualConfig *config)
 303 {
 304    /* Drivers may change the args to _mesa_create_visual() in order to
 305     * setup special visuals.
 306     */
 307    return _mesa_create_visual( config->rgba,
 308                                config->doubleBuffer,
 309                                config->stereo,
 310                                _mesa_bitcount(visinfo->red_mask),
 311                                _mesa_bitcount(visinfo->green_mask),
 312                                _mesa_bitcount(visinfo->blue_mask),
 313                                config->alphaSize,
 314                                0, /* index bits */
 315                                config->depthSize,
 316                                config->stencilSize,
 317                                config->accumRedSize,
 318                                config->accumGreenSize,
 319                                config->accumBlueSize,
 320                                config->accumAlphaSize,
 321                                0 /* num samples */ );
 322 }
 323 #endif
 324
 325
 326 static GLboolean
 327 savageCreateContext( const __GLcontextModes *mesaVis,
 328                      __DRIcontextPrivate *driContextPriv,
 329                      void *sharedContextPrivate )
 330 {
 331    GLcontext *ctx, *shareCtx;
 332    savageContextPtr imesa;
 333    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 334    struct dd_function_table functions;
 335    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 336    drm_savage_sarea_t *saPriv=(drm_savage_sarea_t *)(((char*)sPriv->pSAREA)+
 337                                                  savageScreen->sarea_priv_offset);
 338    int textureSize[SAVAGE_NR_TEX_HEAPS];
 339    int i;
 340    imesa = (savageContextPtr)Xcalloc(sizeof(savageContext), 1);
 341    if (!imesa) {
 342       return GL_FALSE;
 343    }
 344
 345    /* Init default driver functions then plug in savage-specific texture
 346     * functions that are needed as early as during context creation. */
 347    _mesa_init_driver_functions( &functions );
 348    savageDDInitTextureFuncs( &functions );
 349
 350    /* Allocate the Mesa context */
 351    if (sharedContextPrivate)
 352       shareCtx = ((savageContextPtr) sharedContextPrivate)->glCtx;
 353    else
 354       shareCtx = NULL;
 355    ctx = _mesa_create_context(mesaVis, shareCtx, &functions, imesa);
 356    if (!ctx) {
 357       Xfree(imesa);
 358       return GL_FALSE;
 359    }
 360    driContextPriv->driverPrivate = imesa;
 361
 362    imesa->cmdBuf.size = SAVAGE_CMDBUF_SIZE;
 363    imesa->cmdBuf.base = imesa->cmdBuf.write =
 364        malloc(SAVAGE_CMDBUF_SIZE * sizeof(drm_savage_cmd_header_t));
 365    if (!imesa->cmdBuf.base)
 366        return GL_FALSE;
 367
 368    /* Parse configuration files */
 369    driParseConfigFiles (&imesa->optionCache, &savageScreen->optionCache,
 370                         sPriv->myNum, "savage");
 371
 372    imesa->float_depth = driQueryOptionb(&imesa->optionCache, "float_depth") &&
 373        savageScreen->chipset >= S3_SAVAGE4;
 374    imesa->no_rast = driQueryOptionb(&imesa->optionCache, "no_rast");
 375
 376 #if 0
 377    ctx->Const.MinLineWidth = 1.0;
 378    ctx->Const.MinLineWidthAA = 1.0;
 379    ctx->Const.MaxLineWidth = 3.0;
 380    ctx->Const.MaxLineWidthAA = 3.0;
 381    ctx->Const.LineWidthGranularity = 1.0;
 382 #endif
 383
 384    /* Dri stuff
 385     */
 386    imesa->hHWContext = driContextPriv->hHWContext;
 387    imesa->driFd = sPriv->fd;
 388    imesa->driHwLock = &sPriv->pSAREA->lock;
 389
 390    imesa->savageScreen = savageScreen;
 391    imesa->driScreen = sPriv;
 392    imesa->sarea = saPriv;
 393    imesa->glBuffer = NULL;
 394
 395    /* DMA buffer */
 396
 397    for(i=0;i<5;i++)
 398    {
 399        imesa->apertureBase[i] = (GLubyte *)savageScreen->aperture.map +
 400            0x01000000 * i;
 401    }
 402
 403    imesa->aperturePitch = savageScreen->aperturePitch;
 404
 405    /* change texHeap initialize to support two kind of texture heap*/
 406    /* here is some parts of initialization, others in InitDriver() */
 407
 408    (void) memset( imesa->textureHeaps, 0, sizeof( imesa->textureHeaps ) );
 409    make_empty_list( & imesa->swapped );
 410
 411    textureSize[SAVAGE_CARD_HEAP] = savageScreen->textureSize[SAVAGE_CARD_HEAP];
 412    textureSize[SAVAGE_AGP_HEAP] = savageScreen->textureSize[SAVAGE_AGP_HEAP];
 413    imesa->lastTexHeap = savageScreen->texVirtual[SAVAGE_AGP_HEAP] ? 2 : 1;
 414    switch(driQueryOptioni (&imesa->optionCache, "texture_heaps")) {
 415    case DRI_CONF_TEXTURE_HEAPS_CARD: /* only use card memory, if available */
 416        if (textureSize[SAVAGE_CARD_HEAP])
 417            imesa->lastTexHeap = 1;
 418        break;
 419    case DRI_CONF_TEXTURE_HEAPS_GART: /* only use gart memory, if available */
 420        if (imesa->lastTexHeap == 2 && textureSize[SAVAGE_AGP_HEAP])
 421            textureSize[SAVAGE_CARD_HEAP] = 0;
 422        break;
 423    /*default: Nothing to do, use all available memory. */
 424    }
 425
 426    for (i = 0; i < imesa->lastTexHeap; i++) {
 427        imesa->textureHeaps[i] = driCreateTextureHeap(
 428            i, imesa,
 429            textureSize[i],
 430            11,                                  /* 2^11 = 2k alignment */
 431            SAVAGE_NR_TEX_REGIONS,
 432            (drmTextureRegionPtr)imesa->sarea->texList[i],
 433             &imesa->sarea->texAge[i],
 434             &imesa->swapped,
 435             sizeof( savageTexObj ),
 436             (destroy_texture_object_t *) savageDestroyTexObj );
 437        /* If textureSize[i] == 0 textureHeaps[i] is NULL. This can happen
 438         * if there is not enough card memory for a card texture heap. */
 439        if (imesa->textureHeaps[i])
 440            driSetTextureSwapCounterLocation( imesa->textureHeaps[i],
 441                                              & imesa->c_textureSwaps );
 442    }
 443    imesa->texture_depth = driQueryOptioni (&imesa->optionCache,
 444                                            "texture_depth");
 445    if (imesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 446        imesa->texture_depth = ( savageScreen->cpp == 4 ) ?
 447            DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 448
 449    if (savageScreen->chipset >= S3_SAVAGE4)
 450        ctx->Const.MaxTextureUnits = 2;
 451    else
 452        ctx->Const.MaxTextureUnits = 1;
 453    if (driQueryOptioni(&imesa->optionCache, "texture_units") <
 454        ctx->Const.MaxTextureUnits)
 455        ctx->Const.MaxTextureUnits =
 456            driQueryOptioni(&imesa->optionCache, "texture_units");
 457    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 458    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 459
 460    driCalculateMaxTextureLevels( imesa->textureHeaps,
 461                                  imesa->lastTexHeap,
 462                                  & ctx->Const,
 463                                  4,
 464                                  11, /* max 2D texture size is 2048x2048 */
 465                                  0,  /* 3D textures unsupported. */
 466                                  0,  /* cube textures unsupported. */
 467                                  0,  /* texture rectangles unsupported. */
 468                                  12,
 469                                  GL_FALSE,
 470                                  0 );
 471    if (ctx->Const.MaxTextureLevels <= 6) { /*spec requires at least 64x64*/
 472        __driUtilMessage("Not enough texture memory. "
 473                         "Falling back to indirect rendering.");
 474        Xfree(imesa);
 475        return GL_FALSE;
 476    }
 477
 478    imesa->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 479    imesa->depth_scale = (imesa->savageScreen->zpp == 2) ?
 480        (1.0F/0xffff):(1.0F/0xffffff);
 481
 482    imesa->bufferSize = savageScreen->bufferSize;
 483    imesa->dmaVtxBuf.total = 0;
 484    imesa->dmaVtxBuf.used = 0;
 485    imesa->dmaVtxBuf.flushed = 0;
 486
 487    imesa->clientVtxBuf.total = imesa->bufferSize / 4;
 488    imesa->clientVtxBuf.used = 0;
 489    imesa->clientVtxBuf.flushed = 0;
 490    imesa->clientVtxBuf.buf = (u_int32_t *)malloc(imesa->bufferSize);
 491
 492    imesa->vtxBuf = &imesa->clientVtxBuf;
 493
 494    imesa->firstElt = -1;
 495
 496    /* Uninitialized vertex format. Force setting the vertex state in
 497     * savageRenderStart.
 498     */
 499    imesa->vertex_size = 0;
 500
 501    /* Utah stuff
 502     */
 503    imesa->new_state = ~0;
 504    imesa->new_gl_state = ~0;
 505    imesa->RenderIndex = ~0;
 506    imesa->dirty = ~0;
 507    imesa->lostContext = GL_TRUE;
 508    imesa->CurrentTexObj[0] = 0;
 509    imesa->CurrentTexObj[1] = 0;
 510
 511    /* Initialize the software rasterizer and helper modules.
 512     */
 513    _swrast_CreateContext( ctx );
 514    _vbo_CreateContext( ctx );
 515    _tnl_CreateContext( ctx );
 516
 517    _swsetup_CreateContext( ctx );
 518
 519    /* Install the customized pipeline:
 520     */
 521    _tnl_destroy_pipeline( ctx );
 522    _tnl_install_pipeline( ctx, savage_pipeline );
 523
 524    imesa->enable_fastpath = driQueryOptionb(&imesa->optionCache,
 525                                             "enable_fastpath");
 526    /* DRM versions before 2.1.3 would only render triangle lists. ELTS
 527     * support was added in 2.2.0. */
 528    if (imesa->enable_fastpath && sPriv->drmMinor < 2) {
 529       fprintf (stderr,
 530                "*** Disabling fast path because your DRM version is buggy "
 531                "or doesn't\n*** support ELTS. You need at least Savage DRM "
 532                "version 2.2.\n");
 533       imesa->enable_fastpath = GL_FALSE;
 534    }
 535
 536    if (!savageScreen->bufs || savageScreen->chipset == S3_SUPERSAVAGE)
 537        imesa->enable_vdma = GL_FALSE;
 538    else
 539        imesa->enable_vdma = driQueryOptionb(&imesa->optionCache, "enable_vdma");
 540
 541    imesa->sync_frames = driQueryOptionb(&imesa->optionCache, "sync_frames");
 542
 543    /* Configure swrast to match hardware characteristics:
 544     */
 545    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 546    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 547    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 548    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 549
 550    ctx->DriverCtx = (void *) imesa;
 551    imesa->glCtx = ctx;
 552
 553 #ifndef SAVAGE_DEBUG
 554    SAVAGE_DEBUG = driParseDebugString( getenv( "SAVAGE_DEBUG" ),
 555                                        debug_control );
 556 #endif
 557
 558    driInitExtensions( ctx, card_extensions, GL_TRUE );
 559    if (savageScreen->chipset >= S3_SAVAGE4)
 560        driInitExtensions( ctx, s4_extensions, GL_FALSE );
 561    if (ctx->Mesa_DXTn ||
 562        driQueryOptionb (&imesa->optionCache, "force_s3tc_enable")) {
 563        _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 564        if (savageScreen->chipset >= S3_SAVAGE4)
 565            /* This extension needs DXT3 and DTX5 support in hardware.
 566             * Not available on Savage3D/MX/IX. */
 567            _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 568    }
 569
 570    savageDDInitStateFuncs( ctx );
 571    savageDDInitSpanFuncs( ctx );
 572    savageDDInitDriverFuncs( ctx );
 573    savageDDInitIoctlFuncs( ctx );
 574    savageInitTriFuncs( ctx );
 575
 576    savageDDInitState( imesa );
 577
 578    driContextPriv->driverPrivate = (void *) imesa;
 579
 580    return GL_TRUE;
 581 }
 582
 583 static void
 584 savageDestroyContext(__DRIcontextPrivate *driContextPriv)
 585 {
 586    savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 587    GLuint i;
 588
 589    assert (imesa); /* should never be NULL */
 590    if (imesa) {
 591       savageFlushVertices(imesa);
 592       savageReleaseIndexedVerts(imesa);
 593       savageFlushCmdBuf(imesa, GL_TRUE); /* release DMA buffer */
 594       WAIT_IDLE_EMPTY(imesa);
 595
 596       for (i = 0; i < imesa->lastTexHeap; i++)
 597          driDestroyTextureHeap(imesa->textureHeaps[i]);
 598
 599       free(imesa->cmdBuf.base);
 600       free(imesa->clientVtxBuf.buf);
 601
 602       _swsetup_DestroyContext(imesa->glCtx );
 603       _tnl_DestroyContext( imesa->glCtx );
 604       _vbo_DestroyContext( imesa->glCtx );
 605       _swrast_DestroyContext( imesa->glCtx );
 606
 607       /* free the Mesa context */
 608       imesa->glCtx->DriverCtx = NULL;
 609       _mesa_destroy_context(imesa->glCtx);
 610
 611       /* no longer use vertex_dma_buf*/
 612       Xfree(imesa);
 613    }
 614 }
 615
 616
 617 static GLboolean
 618 savageCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 619                     __DRIdrawablePrivate *driDrawPriv,
 620                     const __GLcontextModes *mesaVis,
 621                     GLboolean isPixmap)
 622 {
 623    savageScreenPrivate *screen = (savageScreenPrivate *) driScrnPriv->private;
 624
 625    if (isPixmap) {
 626       return GL_FALSE; /* not implemented */
 627    }
 628    else {
 629       GLboolean swStencil = mesaVis->stencilBits > 0 && mesaVis->depthBits != 24;
 630       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 631       /*
 632        * XXX: this value needs to be set according to the config file
 633        * setting.  But we don't get that until we create a rendering
 634        * context!!!!
 635        */
 636       GLboolean float_depth = GL_FALSE;
 637
 638       {
 639          driRenderbuffer *frontRb
 640             = driNewRenderbuffer(GL_RGBA,
 641                                  (GLubyte *) screen->aperture.map
 642                                  + 0x01000000 * TARGET_FRONT,
 643                                  screen->cpp,
 644                                  screen->frontOffset, screen->aperturePitch,
 645                                  driDrawPriv);
 646          savageSetSpanFunctions(frontRb, mesaVis, float_depth);
 647          assert(frontRb->Base.Data);
 648          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 649       }
 650
 651       if (mesaVis->doubleBufferMode) {
 652          driRenderbuffer *backRb
 653             = driNewRenderbuffer(GL_RGBA,
 654                                  (GLubyte *) screen->aperture.map
 655                                  + 0x01000000 * TARGET_BACK,
 656                                  screen->cpp,
 657                                  screen->backOffset, screen->aperturePitch,
 658                                  driDrawPriv);
 659          savageSetSpanFunctions(backRb, mesaVis, float_depth);
 660          assert(backRb->Base.Data);
 661          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 662       }
 663
 664       if (mesaVis->depthBits == 16) {
 665          driRenderbuffer *depthRb
 666             = driNewRenderbuffer(GL_DEPTH_COMPONENT16,
 667                                  (GLubyte *) screen->aperture.map
 668                                  + 0x01000000 * TARGET_DEPTH,
 669                                  screen->zpp,
 670                                  screen->depthOffset, screen->aperturePitch,
 671                                  driDrawPriv);
 672          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 673          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 674       }
 675       else if (mesaVis->depthBits == 24) {
 676          driRenderbuffer *depthRb
 677             = driNewRenderbuffer(GL_DEPTH_COMPONENT24,
 678                                  (GLubyte *) screen->aperture.map
 679                                  + 0x01000000 * TARGET_DEPTH,
 680                                  screen->zpp,
 681                                  screen->depthOffset, screen->aperturePitch,
 682                                  driDrawPriv);
 683          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 684          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 685       }
 686
 687       if (mesaVis->stencilBits > 0 && !swStencil) {
 688          driRenderbuffer *stencilRb
 689             = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT,
 690                                  (GLubyte *) screen->aperture.map
 691                                  + 0x01000000 * TARGET_DEPTH,
 692                                  screen->zpp,
 693                                  screen->depthOffset, screen->aperturePitch,
 694                                  driDrawPriv);
 695          savageSetSpanFunctions(stencilRb, mesaVis, float_depth);
 696          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 697       }
 698
 699       _mesa_add_soft_renderbuffers(fb,
 700                                    GL_FALSE, /* color */
 701                                    GL_FALSE, /* depth */
 702                                    swStencil,
 703                                    mesaVis->accumRedBits > 0,
 704                                    GL_FALSE, /* alpha */
 705                                    GL_FALSE /* aux */);
 706       driDrawPriv->driverPrivate = (void *) fb;
 707
 708       return (driDrawPriv->driverPrivate != NULL);
 709    }
 710 }
 711
 712 static void
 713 savageDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 714 {
 715    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 716 }
 717
 718 #if 0
 719 void XMesaSwapBuffers(__DRIdrawablePrivate *driDrawPriv)
 720 {
 721    /* XXX should do swap according to the buffer, not the context! */
 722    savageContextPtr imesa = savageCtx;
 723
 724    FLUSH_VB( imesa->glCtx, "swap buffers" );
 725    savageSwapBuffers(imesa);
 726 }
 727 #endif
 728
 729
 730 void savageXMesaSetClipRects(savageContextPtr imesa)
 731 {
 732    __DRIdrawablePrivate *dPriv = imesa->driDrawable;
 733
 734    if ((dPriv->numBackClipRects == 0)
 735        || (imesa->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT)) {
 736       imesa->numClipRects = dPriv->numClipRects;
 737       imesa->pClipRects = dPriv->pClipRects;
 738       imesa->drawX = dPriv->x;
 739       imesa->drawY = dPriv->y;
 740    } else {
 741       imesa->numClipRects = dPriv->numBackClipRects;
 742       imesa->pClipRects = dPriv->pBackClipRects;
 743       imesa->drawX = dPriv->backX;
 744       imesa->drawY = dPriv->backY;
 745    }
 746
 747    savageCalcViewport( imesa->glCtx );
 748 }
 749
 750
 751 static void savageXMesaWindowMoved( savageContextPtr imesa )
 752 {
 753    __DRIdrawablePrivate *const drawable = imesa->driDrawable;
 754    __DRIdrawablePrivate *const readable = imesa->driReadable;
 755
 756    if (0)
 757       fprintf(stderr, "savageXMesaWindowMoved\n\n");
 758
 759    savageXMesaSetClipRects(imesa);
 760
 761    driUpdateFramebufferSize(imesa->glCtx, drawable);
 762    if (drawable != readable) {
 763       driUpdateFramebufferSize(imesa->glCtx, readable);
 764    }
 765 }
 766
 767
 768 static GLboolean
 769 savageUnbindContext(__DRIcontextPrivate *driContextPriv)
 770 {
 771    savageContextPtr savage = (savageContextPtr) driContextPriv->driverPrivate;
 772    if (savage)
 773       savage->dirty = ~0;
 774
 775    return GL_TRUE;
 776 }
 777
 778 #if 0
 779 static GLboolean
 780 savageOpenFullScreen(__DRIcontextPrivate *driContextPriv)
 781 {
 782
 783
 784
 785     if (driContextPriv) {
 786       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 787       imesa->IsFullScreen = GL_TRUE;
 788       imesa->backup_frontOffset = imesa->savageScreen->frontOffset;
 789       imesa->backup_backOffset = imesa->savageScreen->backOffset;
 790       imesa->backup_frontBitmapDesc = imesa->savageScreen->frontBitmapDesc;
 791       imesa->savageScreen->frontBitmapDesc = imesa->savageScreen->backBitmapDesc;
 792       imesa->toggle = TARGET_BACK;
 793    }
 794
 795     return GL_TRUE;
 796 }
 797
 798 static GLboolean
 799 savageCloseFullScreen(__DRIcontextPrivate *driContextPriv)
 800 {
 801
 802     if (driContextPriv) {
 803       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 804       WAIT_IDLE_EMPTY(imesa);
 805       imesa->IsFullScreen = GL_FALSE;
 806       imesa->savageScreen->frontOffset = imesa->backup_frontOffset;
 807       imesa->savageScreen->backOffset = imesa->backup_backOffset;
 808       imesa->savageScreen->frontBitmapDesc = imesa->backup_frontBitmapDesc;
 809    }
 810     return GL_TRUE;
 811 }
 812 #endif
 813
 814 static GLboolean
 815 savageMakeCurrent(__DRIcontextPrivate *driContextPriv,
 816                   __DRIdrawablePrivate *driDrawPriv,
 817                   __DRIdrawablePrivate *driReadPriv)
 818 {
 819    if (driContextPriv) {
 820       savageContextPtr imesa
 821          = (savageContextPtr) driContextPriv->driverPrivate;
 822       struct gl_framebuffer *drawBuffer
 823          = (GLframebuffer *) driDrawPriv->driverPrivate;
 824       struct gl_framebuffer *readBuffer
 825          = (GLframebuffer *) driReadPriv->driverPrivate;
 826       driRenderbuffer *frontRb = (driRenderbuffer *)
 827          drawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
 828       driRenderbuffer *backRb = (driRenderbuffer *)
 829          drawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
 830
 831       assert(frontRb->Base.Data);
 832       if (imesa->glCtx->Visual.doubleBufferMode) {
 833          assert(backRb->Base.Data);
 834       }
 835
 836       imesa->driReadable = driReadPriv;
 837       imesa->driDrawable = driDrawPriv;
 838       imesa->dirty = ~0;
 839
 840       _mesa_make_current(imesa->glCtx, drawBuffer, readBuffer);
 841
 842       savageXMesaWindowMoved( imesa );
 843    }
 844    else
 845    {
 846       _mesa_make_current(NULL, NULL, NULL);
 847    }
 848    return GL_TRUE;
 849 }
 850
 851
 852 void savageGetLock( savageContextPtr imesa, GLuint flags )
 853 {
 854    __DRIdrawablePrivate *const drawable = imesa->driDrawable;
 855    __DRIdrawablePrivate *const readable = imesa->driReadable;
 856    __DRIscreenPrivate *sPriv = imesa->driScreen;
 857    drm_savage_sarea_t *sarea = imesa->sarea;
 858    int me = imesa->hHWContext;
 859    int stamp = drawable->lastStamp;
 860    int heap;
 861    unsigned int timestamp = 0;
 862
 863
 864
 865    /* We know there has been contention.
 866     */
 867    drmGetLock(imesa->driFd, imesa->hHWContext, flags);
 868
 869
 870    /* Note contention for throttling hint
 871     */
 872    imesa->any_contend = 1;
 873
 874    /* If the window moved, may need to set a new cliprect now.
 875     *
 876     * NOTE: This releases and regains the hw lock, so all state
 877     * checking must be done *after* this call:
 878     */
 879    DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
 880    if (drawable != readable) {
 881       DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
 882    }
 883
 884
 885    /* If we lost context, need to dump all registers to hardware.
 886     * Note that we don't care about 2d contexts, even if they perform
 887     * accelerated commands, so the DRI locking in the X server is even
 888     * more broken than usual.
 889     */
 890    if (sarea->ctxOwner != me) {
 891       imesa->dirty |= (SAVAGE_UPLOAD_LOCAL |
 892                        SAVAGE_UPLOAD_GLOBAL |
 893                        SAVAGE_UPLOAD_FOGTBL |
 894                        SAVAGE_UPLOAD_TEX0 |
 895                        SAVAGE_UPLOAD_TEX1 |
 896                        SAVAGE_UPLOAD_TEXGLOBAL);
 897       imesa->lostContext = GL_TRUE;
 898       sarea->ctxOwner = me;
 899    }
 900
 901    for (heap = 0; heap < imesa->lastTexHeap; ++heap) {
 902       /* If a heap was changed, update its timestamp. Do this before
 903        * DRI_AGE_TEXTURES updates the local_age. */
 904       if (imesa->textureHeaps[heap] &&
 905           imesa->textureHeaps[heap]->global_age[0] >
 906           imesa->textureHeaps[heap]->local_age) {
 907          if (timestamp == 0)
 908             timestamp = savageEmitEventLocked(imesa, 0);
 909          imesa->textureHeaps[heap]->timestamp = timestamp;
 910       }
 911       DRI_AGE_TEXTURES( imesa->textureHeaps[heap] );
 912    }
 913
 914    if (drawable->lastStamp != stamp) {
 915       driUpdateFramebufferSize(imesa->glCtx, drawable);
 916       savageXMesaWindowMoved( imesa );
 917    }
 918 }
 919
 920
 921
 922 static const struct __DriverAPIRec savageAPI = {
 923    savageInitDriver,
 924    savageDestroyScreen,
 925    savageCreateContext,
 926    savageDestroyContext,
 927    savageCreateBuffer,
 928    savageDestroyBuffer,
 929    savageSwapBuffers,
 930    savageMakeCurrent,
 931    savageUnbindContext
 932 };
 933
 934
 935 static __GLcontextModes *
 936 savageFillInModes( unsigned pixel_bits, unsigned depth_bits,
 937                    unsigned stencil_bits, GLboolean have_back_buffer )
 938 {
 939     __GLcontextModes * modes;
 940     __GLcontextModes * m;
 941     unsigned num_modes;
 942     unsigned depth_buffer_factor;
 943     unsigned back_buffer_factor;
 944     GLenum fb_format;
 945     GLenum fb_type;
 946
 947     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 948      * enough to add support.  Basically, if a context is created with an
 949      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 950      * will never be used.
 951      *
 952      * FK: What about drivers that don't use page flipping? Could they
 953      * just expose GLX_SWAP_COPY_OML?
 954      */
 955     static const GLenum back_buffer_modes[] = {
 956         GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
 957     };
 958
 959     u_int8_t depth_bits_array[2];
 960     u_int8_t stencil_bits_array[2];
 961
 962
 963     depth_bits_array[0] = depth_bits;
 964     depth_bits_array[1] = depth_bits;
 965
 966     /* Just like with the accumulation buffer, always provide some modes
 967      * with a stencil buffer.  It will be a sw fallback, but some apps won't
 968      * care about that.
 969      */
 970     stencil_bits_array[0] = 0;
 971     stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 972
 973     depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
 974     back_buffer_factor  = (have_back_buffer) ? 2 : 1;
 975
 976     num_modes = depth_buffer_factor * back_buffer_factor * 4;
 977
 978     if ( pixel_bits == 16 ) {
 979         fb_format = GL_RGB;
 980         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 981     }
 982     else {
 983         fb_format = GL_BGR;
 984         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 985     }
 986
 987     modes = (*dri_interface->createContextModes)( num_modes, sizeof( __GLcontextModes ) );
 988     m = modes;
 989     if ( ! driFillInModes( & m, fb_format, fb_type,
 990                            depth_bits_array, stencil_bits_array, depth_buffer_factor,
 991                            back_buffer_modes, back_buffer_factor,
 992                            GLX_TRUE_COLOR ) ) {
 993         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 994                  __func__, __LINE__ );
 995         return NULL;
 996     }
 997
 998     if ( ! driFillInModes( & m, fb_format, fb_type,
 999                            depth_bits_array, stencil_bits_array, depth_buffer_factor,
1000                            back_buffer_modes, back_buffer_factor,
1001                            GLX_DIRECT_COLOR ) ) {
1002         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
1003                  __func__, __LINE__ );
1004         return NULL;
1005     }
1006
1007     /* Mark the visual as slow if there are "fake" stencil bits.
1008      */
1009     for ( m = modes ; m != NULL ; m = m->next ) {
1010         if ( (m->stencilBits != 0) && (m->stencilBits != stencil_bits) ) {
1011             m->visualRating = GLX_SLOW_CONFIG;
1012         }
1013     }
1014
1015     return modes;
1016 }
1017
1018
1019 /**
1020  * This is the bootstrap function for the driver.  libGL supplies all of the
1021  * requisite information about the system, and the driver initializes itself.
1022  * This routine also fills in the linked list pointed to by \c driver_modes
1023  * with the \c __GLcontextModes that the driver can support for windows or
1024  * pbuffers.
1025  *
1026  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
1027  *         failure.
1028  */
1029 PUBLIC
1030 void * __driCreateNewScreen_20050727( __DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
1031                              const __GLcontextModes * modes,
1032                              const __DRIversion * ddx_version,
1033                              const __DRIversion * dri_version,
1034                              const __DRIversion * drm_version,
1035                              const __DRIframebuffer * frame_buffer,
1036                              drmAddress pSAREA, int fd,
1037                              int internal_api_version,
1038                              const __DRIinterfaceMethods * interface,
1039                              __GLcontextModes ** driver_modes )
1040
1041 {
1042    __DRIscreenPrivate *psp;
1043    static const __DRIversion ddx_expected = { 2, 0, 0 };
1044    static const __DRIversion dri_expected = { 4, 0, 0 };
1045    static const __DRIversion drm_expected = { 2, 1, 0 };
1046
1047    dri_interface = interface;
1048
1049    if ( ! driCheckDriDdxDrmVersions2( "Savage",
1050                                       dri_version, & dri_expected,
1051                                       ddx_version, & ddx_expected,
1052                                       drm_version, & drm_expected ) ) {
1053       return NULL;
1054    }
1055
1056    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
1057                                   ddx_version, dri_version, drm_version,
1058                                   frame_buffer, pSAREA, fd,
1059                                   internal_api_version, &savageAPI);
1060    if ( psp != NULL ) {
1061       SAVAGEDRIPtr dri_priv = (SAVAGEDRIPtr)psp->pDevPriv;
1062       *driver_modes = savageFillInModes( dri_priv->cpp*8,
1063                                          (dri_priv->cpp == 2) ? 16 : 24,
1064                                          (dri_priv->cpp == 2) ? 0  : 8,
1065                                          (dri_priv->backOffset != dri_priv->depthOffset) );
1066
1067       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
1068        * enable the extensions.  It just makes sure that all the dispatch offsets for all
1069        * the extensions that *might* be enables are known.  This is needed because the
1070        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
1071        * enable the extensions until we have a context pointer.
1072        *
1073        * Hello chicken.  Hello egg.  How are you two today?
1074        */
1075       driInitExtensions( NULL, card_extensions, GL_FALSE );
1076    }
1077
1078    return (void *) psp;
1079 }