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, "GLX_SGI_make_current_read");
 270    }
 271
 272 #if 0
 273    savageDDFastPathInit();
 274    savageDDTrifuncInit();
 275    savageDDSetupInit();
 276 #endif
 277    return GL_TRUE;
 278 }
 279
 280 /* Accessed by dlsym from dri_mesa_init.c
 281  */
 282 static void
 283 savageDestroyScreen(__DRIscreenPrivate *sPriv)
 284 {
 285    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 286
 287    if (savageScreen->bufs)
 288        drmUnmapBufs(savageScreen->bufs);
 289
 290    /* free all option information */
 291    driDestroyOptionInfo (&savageScreen->optionCache);
 292
 293    Xfree(savageScreen);
 294    sPriv->private = NULL;
 295 }
 296
 297 #if 0
 298 GLvisual *XMesaCreateVisual(Display *dpy,
 299                             __DRIscreenPrivate *driScrnPriv,
 300                             const XVisualInfo *visinfo,
 301                             const __GLXvisualConfig *config)
 302 {
 303    /* Drivers may change the args to _mesa_create_visual() in order to
 304     * setup special visuals.
 305     */
 306    return _mesa_create_visual( config->rgba,
 307                                config->doubleBuffer,
 308                                config->stereo,
 309                                _mesa_bitcount(visinfo->red_mask),
 310                                _mesa_bitcount(visinfo->green_mask),
 311                                _mesa_bitcount(visinfo->blue_mask),
 312                                config->alphaSize,
 313                                0, /* index bits */
 314                                config->depthSize,
 315                                config->stencilSize,
 316                                config->accumRedSize,
 317                                config->accumGreenSize,
 318                                config->accumBlueSize,
 319                                config->accumAlphaSize,
 320                                0 /* num samples */ );
 321 }
 322 #endif
 323
 324
 325 static GLboolean
 326 savageCreateContext( const __GLcontextModes *mesaVis,
 327                      __DRIcontextPrivate *driContextPriv,
 328                      void *sharedContextPrivate )
 329 {
 330    GLcontext *ctx, *shareCtx;
 331    savageContextPtr imesa;
 332    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 333    struct dd_function_table functions;
 334    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 335    drm_savage_sarea_t *saPriv=(drm_savage_sarea_t *)(((char*)sPriv->pSAREA)+
 336                                                  savageScreen->sarea_priv_offset);
 337    int textureSize[SAVAGE_NR_TEX_HEAPS];
 338    int i;
 339    imesa = (savageContextPtr)Xcalloc(sizeof(savageContext), 1);
 340    if (!imesa) {
 341       return GL_FALSE;
 342    }
 343
 344    /* Init default driver functions then plug in savage-specific texture
 345     * functions that are needed as early as during context creation. */
 346    _mesa_init_driver_functions( &functions );
 347    savageDDInitTextureFuncs( &functions );
 348
 349    /* Allocate the Mesa context */
 350    if (sharedContextPrivate)
 351       shareCtx = ((savageContextPtr) sharedContextPrivate)->glCtx;
 352    else
 353       shareCtx = NULL;
 354    ctx = _mesa_create_context(mesaVis, shareCtx, &functions, imesa);
 355    if (!ctx) {
 356       Xfree(imesa);
 357       return GL_FALSE;
 358    }
 359    driContextPriv->driverPrivate = imesa;
 360
 361    imesa->cmdBuf.size = SAVAGE_CMDBUF_SIZE;
 362    imesa->cmdBuf.base = imesa->cmdBuf.write =
 363        malloc(SAVAGE_CMDBUF_SIZE * sizeof(drm_savage_cmd_header_t));
 364    if (!imesa->cmdBuf.base)
 365        return GL_FALSE;
 366
 367    /* Parse configuration files */
 368    driParseConfigFiles (&imesa->optionCache, &savageScreen->optionCache,
 369                         sPriv->myNum, "savage");
 370
 371    imesa->float_depth = driQueryOptionb(&imesa->optionCache, "float_depth") &&
 372        savageScreen->chipset >= S3_SAVAGE4;
 373    imesa->no_rast = driQueryOptionb(&imesa->optionCache, "no_rast");
 374
 375 #if 0
 376    ctx->Const.MinLineWidth = 1.0;
 377    ctx->Const.MinLineWidthAA = 1.0;
 378    ctx->Const.MaxLineWidth = 3.0;
 379    ctx->Const.MaxLineWidthAA = 3.0;
 380    ctx->Const.LineWidthGranularity = 1.0;
 381 #endif
 382
 383    /* Dri stuff
 384     */
 385    imesa->hHWContext = driContextPriv->hHWContext;
 386    imesa->driFd = sPriv->fd;
 387    imesa->driHwLock = &sPriv->pSAREA->lock;
 388
 389    imesa->savageScreen = savageScreen;
 390    imesa->driScreen = sPriv;
 391    imesa->sarea = saPriv;
 392    imesa->glBuffer = NULL;
 393
 394    /* DMA buffer */
 395
 396    for(i=0;i<5;i++)
 397    {
 398        imesa->apertureBase[i] = (GLubyte *)savageScreen->aperture.map +
 399            0x01000000 * i;
 400    }
 401
 402    imesa->aperturePitch = savageScreen->aperturePitch;
 403
 404    /* change texHeap initialize to support two kind of texture heap*/
 405    /* here is some parts of initialization, others in InitDriver() */
 406
 407    (void) memset( imesa->textureHeaps, 0, sizeof( imesa->textureHeaps ) );
 408    make_empty_list( & imesa->swapped );
 409
 410    textureSize[SAVAGE_CARD_HEAP] = savageScreen->textureSize[SAVAGE_CARD_HEAP];
 411    textureSize[SAVAGE_AGP_HEAP] = savageScreen->textureSize[SAVAGE_AGP_HEAP];
 412    imesa->lastTexHeap = savageScreen->texVirtual[SAVAGE_AGP_HEAP] ? 2 : 1;
 413    switch(driQueryOptioni (&imesa->optionCache, "texture_heaps")) {
 414    case DRI_CONF_TEXTURE_HEAPS_CARD: /* only use card memory, if available */
 415        if (textureSize[SAVAGE_CARD_HEAP])
 416            imesa->lastTexHeap = 1;
 417        break;
 418    case DRI_CONF_TEXTURE_HEAPS_GART: /* only use gart memory, if available */
 419        if (imesa->lastTexHeap == 2 && textureSize[SAVAGE_AGP_HEAP])
 420            textureSize[SAVAGE_CARD_HEAP] = 0;
 421        break;
 422    /*default: Nothing to do, use all available memory. */
 423    }
 424
 425    for (i = 0; i < imesa->lastTexHeap; i++) {
 426        imesa->textureHeaps[i] = driCreateTextureHeap(
 427            i, imesa,
 428            textureSize[i],
 429            11,                                  /* 2^11 = 2k alignment */
 430            SAVAGE_NR_TEX_REGIONS,
 431            (drmTextureRegionPtr)imesa->sarea->texList[i],
 432             &imesa->sarea->texAge[i],
 433             &imesa->swapped,
 434             sizeof( savageTexObj ),
 435             (destroy_texture_object_t *) savageDestroyTexObj );
 436        /* If textureSize[i] == 0 textureHeaps[i] is NULL. This can happen
 437         * if there is not enough card memory for a card texture heap. */
 438        if (imesa->textureHeaps[i])
 439            driSetTextureSwapCounterLocation( imesa->textureHeaps[i],
 440                                              & imesa->c_textureSwaps );
 441    }
 442    imesa->texture_depth = driQueryOptioni (&imesa->optionCache,
 443                                            "texture_depth");
 444    if (imesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 445        imesa->texture_depth = ( savageScreen->cpp == 4 ) ?
 446            DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 447
 448    if (savageScreen->chipset >= S3_SAVAGE4)
 449        ctx->Const.MaxTextureUnits = 2;
 450    else
 451        ctx->Const.MaxTextureUnits = 1;
 452    if (driQueryOptioni(&imesa->optionCache, "texture_units") <
 453        ctx->Const.MaxTextureUnits)
 454        ctx->Const.MaxTextureUnits =
 455            driQueryOptioni(&imesa->optionCache, "texture_units");
 456    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 457    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 458
 459    driCalculateMaxTextureLevels( imesa->textureHeaps,
 460                                  imesa->lastTexHeap,
 461                                  & ctx->Const,
 462                                  4,
 463                                  11, /* max 2D texture size is 2048x2048 */
 464                                  0,  /* 3D textures unsupported. */
 465                                  0,  /* cube textures unsupported. */
 466                                  0,  /* texture rectangles unsupported. */
 467                                  12,
 468                                  GL_FALSE,
 469                                  0 );
 470    if (ctx->Const.MaxTextureLevels <= 6) { /*spec requires at least 64x64*/
 471        __driUtilMessage("Not enough texture memory. "
 472                         "Falling back to indirect rendering.");
 473        Xfree(imesa);
 474        return GL_FALSE;
 475    }
 476
 477    imesa->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 478    imesa->depth_scale = (imesa->savageScreen->zpp == 2) ?
 479        (1.0F/0xffff):(1.0F/0xffffff);
 480
 481    imesa->bufferSize = savageScreen->bufferSize;
 482    imesa->dmaVtxBuf.total = 0;
 483    imesa->dmaVtxBuf.used = 0;
 484    imesa->dmaVtxBuf.flushed = 0;
 485
 486    imesa->clientVtxBuf.total = imesa->bufferSize / 4;
 487    imesa->clientVtxBuf.used = 0;
 488    imesa->clientVtxBuf.flushed = 0;
 489    imesa->clientVtxBuf.buf = (u_int32_t *)malloc(imesa->bufferSize);
 490
 491    imesa->vtxBuf = &imesa->clientVtxBuf;
 492
 493    imesa->firstElt = -1;
 494
 495    /* Uninitialized vertex format. Force setting the vertex state in
 496     * savageRenderStart.
 497     */
 498    imesa->vertex_size = 0;
 499
 500    /* Utah stuff
 501     */
 502    imesa->new_state = ~0;
 503    imesa->new_gl_state = ~0;
 504    imesa->RenderIndex = ~0;
 505    imesa->dirty = ~0;
 506    imesa->lostContext = GL_TRUE;
 507    imesa->CurrentTexObj[0] = 0;
 508    imesa->CurrentTexObj[1] = 0;
 509
 510    /* Initialize the software rasterizer and helper modules.
 511     */
 512    _swrast_CreateContext( ctx );
 513    _vbo_CreateContext( ctx );
 514    _tnl_CreateContext( ctx );
 515
 516    _swsetup_CreateContext( ctx );
 517
 518    /* Install the customized pipeline:
 519     */
 520    _tnl_destroy_pipeline( ctx );
 521    _tnl_install_pipeline( ctx, savage_pipeline );
 522
 523    imesa->enable_fastpath = driQueryOptionb(&imesa->optionCache,
 524                                             "enable_fastpath");
 525    /* DRM versions before 2.1.3 would only render triangle lists. ELTS
 526     * support was added in 2.2.0. */
 527    if (imesa->enable_fastpath && sPriv->drm_version.minor < 2) {
 528       fprintf (stderr,
 529                "*** Disabling fast path because your DRM version is buggy "
 530                "or doesn't\n*** support ELTS. You need at least Savage DRM "
 531                "version 2.2.\n");
 532       imesa->enable_fastpath = GL_FALSE;
 533    }
 534
 535    if (!savageScreen->bufs || savageScreen->chipset == S3_SUPERSAVAGE)
 536        imesa->enable_vdma = GL_FALSE;
 537    else
 538        imesa->enable_vdma = driQueryOptionb(&imesa->optionCache, "enable_vdma");
 539
 540    imesa->sync_frames = driQueryOptionb(&imesa->optionCache, "sync_frames");
 541
 542    /* Configure swrast to match hardware characteristics:
 543     */
 544    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 545    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 546    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 547    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 548
 549    ctx->DriverCtx = (void *) imesa;
 550    imesa->glCtx = ctx;
 551
 552 #ifndef SAVAGE_DEBUG
 553    SAVAGE_DEBUG = driParseDebugString( getenv( "SAVAGE_DEBUG" ),
 554                                        debug_control );
 555 #endif
 556
 557    driInitExtensions( ctx, card_extensions, GL_TRUE );
 558    if (savageScreen->chipset >= S3_SAVAGE4)
 559        driInitExtensions( ctx, s4_extensions, GL_FALSE );
 560    if (ctx->Mesa_DXTn ||
 561        driQueryOptionb (&imesa->optionCache, "force_s3tc_enable")) {
 562        _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 563        if (savageScreen->chipset >= S3_SAVAGE4)
 564            /* This extension needs DXT3 and DTX5 support in hardware.
 565             * Not available on Savage3D/MX/IX. */
 566            _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 567    }
 568
 569    savageDDInitStateFuncs( ctx );
 570    savageDDInitSpanFuncs( ctx );
 571    savageDDInitDriverFuncs( ctx );
 572    savageDDInitIoctlFuncs( ctx );
 573    savageInitTriFuncs( ctx );
 574
 575    savageDDInitState( imesa );
 576
 577    driContextPriv->driverPrivate = (void *) imesa;
 578
 579    return GL_TRUE;
 580 }
 581
 582 static void
 583 savageDestroyContext(__DRIcontextPrivate *driContextPriv)
 584 {
 585    savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 586    GLuint i;
 587
 588    assert (imesa); /* should never be NULL */
 589    if (imesa) {
 590       savageFlushVertices(imesa);
 591       savageReleaseIndexedVerts(imesa);
 592       savageFlushCmdBuf(imesa, GL_TRUE); /* release DMA buffer */
 593       WAIT_IDLE_EMPTY(imesa);
 594
 595       for (i = 0; i < imesa->lastTexHeap; i++)
 596          driDestroyTextureHeap(imesa->textureHeaps[i]);
 597
 598       free(imesa->cmdBuf.base);
 599       free(imesa->clientVtxBuf.buf);
 600
 601       _swsetup_DestroyContext(imesa->glCtx );
 602       _tnl_DestroyContext( imesa->glCtx );
 603       _vbo_DestroyContext( imesa->glCtx );
 604       _swrast_DestroyContext( imesa->glCtx );
 605
 606       /* free the Mesa context */
 607       imesa->glCtx->DriverCtx = NULL;
 608       _mesa_destroy_context(imesa->glCtx);
 609
 610       /* no longer use vertex_dma_buf*/
 611       Xfree(imesa);
 612    }
 613 }
 614
 615
 616 static GLboolean
 617 savageCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 618                     __DRIdrawablePrivate *driDrawPriv,
 619                     const __GLcontextModes *mesaVis,
 620                     GLboolean isPixmap)
 621 {
 622    savageScreenPrivate *screen = (savageScreenPrivate *) driScrnPriv->private;
 623
 624    if (isPixmap) {
 625       return GL_FALSE; /* not implemented */
 626    }
 627    else {
 628       GLboolean swStencil = mesaVis->stencilBits > 0 && mesaVis->depthBits != 24;
 629       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 630       /*
 631        * XXX: this value needs to be set according to the config file
 632        * setting.  But we don't get that until we create a rendering
 633        * context!!!!
 634        */
 635       GLboolean float_depth = GL_FALSE;
 636
 637       {
 638          driRenderbuffer *frontRb
 639             = driNewRenderbuffer(GL_RGBA,
 640                                  (GLubyte *) screen->aperture.map
 641                                  + 0x01000000 * TARGET_FRONT,
 642                                  screen->cpp,
 643                                  screen->frontOffset, screen->aperturePitch,
 644                                  driDrawPriv);
 645          savageSetSpanFunctions(frontRb, mesaVis, float_depth);
 646          assert(frontRb->Base.Data);
 647          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 648       }
 649
 650       if (mesaVis->doubleBufferMode) {
 651          driRenderbuffer *backRb
 652             = driNewRenderbuffer(GL_RGBA,
 653                                  (GLubyte *) screen->aperture.map
 654                                  + 0x01000000 * TARGET_BACK,
 655                                  screen->cpp,
 656                                  screen->backOffset, screen->aperturePitch,
 657                                  driDrawPriv);
 658          savageSetSpanFunctions(backRb, mesaVis, float_depth);
 659          assert(backRb->Base.Data);
 660          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 661       }
 662
 663       if (mesaVis->depthBits == 16) {
 664          driRenderbuffer *depthRb
 665             = driNewRenderbuffer(GL_DEPTH_COMPONENT16,
 666                                  (GLubyte *) screen->aperture.map
 667                                  + 0x01000000 * TARGET_DEPTH,
 668                                  screen->zpp,
 669                                  screen->depthOffset, screen->aperturePitch,
 670                                  driDrawPriv);
 671          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 672          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 673       }
 674       else if (mesaVis->depthBits == 24) {
 675          driRenderbuffer *depthRb
 676             = driNewRenderbuffer(GL_DEPTH_COMPONENT24,
 677                                  (GLubyte *) screen->aperture.map
 678                                  + 0x01000000 * TARGET_DEPTH,
 679                                  screen->zpp,
 680                                  screen->depthOffset, screen->aperturePitch,
 681                                  driDrawPriv);
 682          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 683          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 684       }
 685
 686       if (mesaVis->stencilBits > 0 && !swStencil) {
 687          driRenderbuffer *stencilRb
 688             = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT,
 689                                  (GLubyte *) screen->aperture.map
 690                                  + 0x01000000 * TARGET_DEPTH,
 691                                  screen->zpp,
 692                                  screen->depthOffset, screen->aperturePitch,
 693                                  driDrawPriv);
 694          savageSetSpanFunctions(stencilRb, mesaVis, float_depth);
 695          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 696       }
 697
 698       _mesa_add_soft_renderbuffers(fb,
 699                                    GL_FALSE, /* color */
 700                                    GL_FALSE, /* depth */
 701                                    swStencil,
 702                                    mesaVis->accumRedBits > 0,
 703                                    GL_FALSE, /* alpha */
 704                                    GL_FALSE /* aux */);
 705       driDrawPriv->driverPrivate = (void *) fb;
 706
 707       return (driDrawPriv->driverPrivate != NULL);
 708    }
 709 }
 710
 711 static void
 712 savageDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 713 {
 714    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 715 }
 716
 717 #if 0
 718 void XMesaSwapBuffers(__DRIdrawablePrivate *driDrawPriv)
 719 {
 720    /* XXX should do swap according to the buffer, not the context! */
 721    savageContextPtr imesa = savageCtx;
 722
 723    FLUSH_VB( imesa->glCtx, "swap buffers" );
 724    savageSwapBuffers(imesa);
 725 }
 726 #endif
 727
 728
 729 void savageXMesaSetClipRects(savageContextPtr imesa)
 730 {
 731    __DRIdrawablePrivate *dPriv = imesa->driDrawable;
 732
 733    if ((dPriv->numBackClipRects == 0)
 734        || (imesa->glCtx->DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_FRONT_LEFT)) {
 735       imesa->numClipRects = dPriv->numClipRects;
 736       imesa->pClipRects = dPriv->pClipRects;
 737       imesa->drawX = dPriv->x;
 738       imesa->drawY = dPriv->y;
 739    } else {
 740       imesa->numClipRects = dPriv->numBackClipRects;
 741       imesa->pClipRects = dPriv->pBackClipRects;
 742       imesa->drawX = dPriv->backX;
 743       imesa->drawY = dPriv->backY;
 744    }
 745
 746    savageCalcViewport( imesa->glCtx );
 747 }
 748
 749
 750 static void savageXMesaWindowMoved( savageContextPtr imesa )
 751 {
 752    __DRIdrawablePrivate *const drawable = imesa->driDrawable;
 753    __DRIdrawablePrivate *const readable = imesa->driReadable;
 754
 755    if (0)
 756       fprintf(stderr, "savageXMesaWindowMoved\n\n");
 757
 758    savageXMesaSetClipRects(imesa);
 759
 760    driUpdateFramebufferSize(imesa->glCtx, drawable);
 761    if (drawable != readable) {
 762       driUpdateFramebufferSize(imesa->glCtx, readable);
 763    }
 764 }
 765
 766
 767 static GLboolean
 768 savageUnbindContext(__DRIcontextPrivate *driContextPriv)
 769 {
 770    savageContextPtr savage = (savageContextPtr) driContextPriv->driverPrivate;
 771    if (savage)
 772       savage->dirty = ~0;
 773
 774    return GL_TRUE;
 775 }
 776
 777 #if 0
 778 static GLboolean
 779 savageOpenFullScreen(__DRIcontextPrivate *driContextPriv)
 780 {
 781
 782
 783
 784     if (driContextPriv) {
 785       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 786       imesa->IsFullScreen = GL_TRUE;
 787       imesa->backup_frontOffset = imesa->savageScreen->frontOffset;
 788       imesa->backup_backOffset = imesa->savageScreen->backOffset;
 789       imesa->backup_frontBitmapDesc = imesa->savageScreen->frontBitmapDesc;
 790       imesa->savageScreen->frontBitmapDesc = imesa->savageScreen->backBitmapDesc;
 791       imesa->toggle = TARGET_BACK;
 792    }
 793
 794     return GL_TRUE;
 795 }
 796
 797 static GLboolean
 798 savageCloseFullScreen(__DRIcontextPrivate *driContextPriv)
 799 {
 800
 801     if (driContextPriv) {
 802       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 803       WAIT_IDLE_EMPTY(imesa);
 804       imesa->IsFullScreen = GL_FALSE;
 805       imesa->savageScreen->frontOffset = imesa->backup_frontOffset;
 806       imesa->savageScreen->backOffset = imesa->backup_backOffset;
 807       imesa->savageScreen->frontBitmapDesc = imesa->backup_frontBitmapDesc;
 808    }
 809     return GL_TRUE;
 810 }
 811 #endif
 812
 813 static GLboolean
 814 savageMakeCurrent(__DRIcontextPrivate *driContextPriv,
 815                   __DRIdrawablePrivate *driDrawPriv,
 816                   __DRIdrawablePrivate *driReadPriv)
 817 {
 818    if (driContextPriv) {
 819       savageContextPtr imesa
 820          = (savageContextPtr) driContextPriv->driverPrivate;
 821       struct gl_framebuffer *drawBuffer
 822          = (GLframebuffer *) driDrawPriv->driverPrivate;
 823       struct gl_framebuffer *readBuffer
 824          = (GLframebuffer *) driReadPriv->driverPrivate;
 825       driRenderbuffer *frontRb = (driRenderbuffer *)
 826          drawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
 827       driRenderbuffer *backRb = (driRenderbuffer *)
 828          drawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
 829
 830       assert(frontRb->Base.Data);
 831       if (imesa->glCtx->Visual.doubleBufferMode) {
 832          assert(backRb->Base.Data);
 833       }
 834
 835       imesa->driReadable = driReadPriv;
 836       imesa->driDrawable = driDrawPriv;
 837       imesa->dirty = ~0;
 838
 839       _mesa_make_current(imesa->glCtx, drawBuffer, readBuffer);
 840
 841       savageXMesaWindowMoved( imesa );
 842    }
 843    else
 844    {
 845       _mesa_make_current(NULL, NULL, NULL);
 846    }
 847    return GL_TRUE;
 848 }
 849
 850
 851 void savageGetLock( savageContextPtr imesa, GLuint flags )
 852 {
 853    __DRIdrawablePrivate *const drawable = imesa->driDrawable;
 854    __DRIdrawablePrivate *const readable = imesa->driReadable;
 855    __DRIscreenPrivate *sPriv = imesa->driScreen;
 856    drm_savage_sarea_t *sarea = imesa->sarea;
 857    int me = imesa->hHWContext;
 858    int stamp = drawable->lastStamp;
 859    int heap;
 860    unsigned int timestamp = 0;
 861
 862
 863
 864    /* We know there has been contention.
 865     */
 866    drmGetLock(imesa->driFd, imesa->hHWContext, flags);
 867
 868
 869    /* Note contention for throttling hint
 870     */
 871    imesa->any_contend = 1;
 872
 873    /* If the window moved, may need to set a new cliprect now.
 874     *
 875     * NOTE: This releases and regains the hw lock, so all state
 876     * checking must be done *after* this call:
 877     */
 878    DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
 879    if (drawable != readable) {
 880       DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
 881    }
 882
 883
 884    /* If we lost context, need to dump all registers to hardware.
 885     * Note that we don't care about 2d contexts, even if they perform
 886     * accelerated commands, so the DRI locking in the X server is even
 887     * more broken than usual.
 888     */
 889    if (sarea->ctxOwner != me) {
 890       imesa->dirty |= (SAVAGE_UPLOAD_LOCAL |
 891                        SAVAGE_UPLOAD_GLOBAL |
 892                        SAVAGE_UPLOAD_FOGTBL |
 893                        SAVAGE_UPLOAD_TEX0 |
 894                        SAVAGE_UPLOAD_TEX1 |
 895                        SAVAGE_UPLOAD_TEXGLOBAL);
 896       imesa->lostContext = GL_TRUE;
 897       sarea->ctxOwner = me;
 898    }
 899
 900    for (heap = 0; heap < imesa->lastTexHeap; ++heap) {
 901       /* If a heap was changed, update its timestamp. Do this before
 902        * DRI_AGE_TEXTURES updates the local_age. */
 903       if (imesa->textureHeaps[heap] &&
 904           imesa->textureHeaps[heap]->global_age[0] >
 905           imesa->textureHeaps[heap]->local_age) {
 906          if (timestamp == 0)
 907             timestamp = savageEmitEventLocked(imesa, 0);
 908          imesa->textureHeaps[heap]->timestamp = timestamp;
 909       }
 910       DRI_AGE_TEXTURES( imesa->textureHeaps[heap] );
 911    }
 912
 913    if (drawable->lastStamp != stamp) {
 914       driUpdateFramebufferSize(imesa->glCtx, drawable);
 915       savageXMesaWindowMoved( imesa );
 916    }
 917 }
 918
 919
 920
 921 static const struct __DriverAPIRec savageAPI = {
 922    savageInitDriver,
 923    savageDestroyScreen,
 924    savageCreateContext,
 925    savageDestroyContext,
 926    savageCreateBuffer,
 927    savageDestroyBuffer,
 928    savageSwapBuffers,
 929    savageMakeCurrent,
 930    savageUnbindContext
 931 };
 932
 933
 934 static __GLcontextModes *
 935 savageFillInModes( unsigned pixel_bits, unsigned depth_bits,
 936                    unsigned stencil_bits, GLboolean have_back_buffer )
 937 {
 938     __GLcontextModes * modes;
 939     __GLcontextModes * m;
 940     unsigned num_modes;
 941     unsigned depth_buffer_factor;
 942     unsigned back_buffer_factor;
 943     GLenum fb_format;
 944     GLenum fb_type;
 945
 946     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 947      * enough to add support.  Basically, if a context is created with an
 948      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 949      * will never be used.
 950      *
 951      * FK: What about drivers that don't use page flipping? Could they
 952      * just expose GLX_SWAP_COPY_OML?
 953      */
 954     static const GLenum back_buffer_modes[] = {
 955         GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
 956     };
 957
 958     u_int8_t depth_bits_array[2];
 959     u_int8_t stencil_bits_array[2];
 960
 961
 962     depth_bits_array[0] = depth_bits;
 963     depth_bits_array[1] = depth_bits;
 964
 965     /* Just like with the accumulation buffer, always provide some modes
 966      * with a stencil buffer.  It will be a sw fallback, but some apps won't
 967      * care about that.
 968      */
 969     stencil_bits_array[0] = 0;
 970     stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 971
 972     depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
 973     back_buffer_factor  = (have_back_buffer) ? 2 : 1;
 974
 975     num_modes = depth_buffer_factor * back_buffer_factor * 4;
 976
 977     if ( pixel_bits == 16 ) {
 978         fb_format = GL_RGB;
 979         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 980     }
 981     else {
 982         fb_format = GL_BGR;
 983         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 984     }
 985
 986     modes = (*dri_interface->createContextModes)( num_modes, sizeof( __GLcontextModes ) );
 987     m = modes;
 988     if ( ! driFillInModes( & m, fb_format, fb_type,
 989                            depth_bits_array, stencil_bits_array, depth_buffer_factor,
 990                            back_buffer_modes, back_buffer_factor,
 991                            GLX_TRUE_COLOR ) ) {
 992         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 993                  __func__, __LINE__ );
 994         return NULL;
 995     }
 996
 997     if ( ! driFillInModes( & m, fb_format, fb_type,
 998                            depth_bits_array, stencil_bits_array, depth_buffer_factor,
 999                            back_buffer_modes, back_buffer_factor,
1000                            GLX_DIRECT_COLOR ) ) {
1001         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
1002                  __func__, __LINE__ );
1003         return NULL;
1004     }
1005
1006     /* Mark the visual as slow if there are "fake" stencil bits.
1007      */
1008     for ( m = modes ; m != NULL ; m = m->next ) {
1009         if ( (m->stencilBits != 0) && (m->stencilBits != stencil_bits) ) {
1010             m->visualRating = GLX_SLOW_CONFIG;
1011         }
1012     }
1013
1014     return modes;
1015 }
1016
1017
1018 /**
1019  * This is the bootstrap function for the driver.  libGL supplies all of the
1020  * requisite information about the system, and the driver initializes itself.
1021  * This routine also fills in the linked list pointed to by \c driver_modes
1022  * with the \c __GLcontextModes that the driver can support for windows or
1023  * pbuffers.
1024  *
1025  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
1026  *         failure.
1027  */
1028 PUBLIC
1029 void * __DRI_CREATE_NEW_SCREEN(int scrn, __DRIscreen *psc,
1030                                const __GLcontextModes * modes,
1031                                const __DRIversion * ddx_version,
1032                                const __DRIversion * dri_version,
1033                                const __DRIversion * drm_version,
1034                                const __DRIframebuffer * frame_buffer,
1035                                drmAddress pSAREA, int fd,
1036                                int internal_api_version,
1037                                const __DRIinterfaceMethods * interface,
1038                                __GLcontextModes ** driver_modes )
1039
1040 {
1041    __DRIscreenPrivate *psp;
1042    static const __DRIversion ddx_expected = { 2, 0, 0 };
1043    static const __DRIversion dri_expected = { 4, 0, 0 };
1044    static const __DRIversion drm_expected = { 2, 1, 0 };
1045
1046    dri_interface = interface;
1047
1048    if ( ! driCheckDriDdxDrmVersions2( "Savage",
1049                                       dri_version, & dri_expected,
1050                                       ddx_version, & ddx_expected,
1051                                       drm_version, & drm_expected ) ) {
1052       return NULL;
1053    }
1054
1055    psp = __driUtilCreateNewScreen(scrn, psc, NULL,
1056                                   ddx_version, dri_version, drm_version,
1057                                   frame_buffer, pSAREA, fd,
1058                                   internal_api_version, &savageAPI);
1059    if ( psp != NULL ) {
1060       SAVAGEDRIPtr dri_priv = (SAVAGEDRIPtr)psp->pDevPriv;
1061       *driver_modes = savageFillInModes( dri_priv->cpp*8,
1062                                          (dri_priv->cpp == 2) ? 16 : 24,
1063                                          (dri_priv->cpp == 2) ? 0  : 8,
1064                                          (dri_priv->backOffset != dri_priv->depthOffset) );
1065
1066       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
1067        * enable the extensions.  It just makes sure that all the dispatch offsets for all
1068        * the extensions that *might* be enables are known.  This is needed because the
1069        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
1070        * enable the extensions until we have a context pointer.
1071        *
1072        * Hello chicken.  Hello egg.  How are you two today?
1073        */
1074       driInitExtensions( NULL, card_extensions, GL_FALSE );
1075    }
1076
1077    return (void *) psp;
1078 }