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 <stdio.h>
  27
  28 #include "main/context.h"
  29 #include "main/framebuffer.h"
  30 #include "main/renderbuffer.h"
  31 #include "main/simple_list.h"
  32
  33 #include "utils.h"
  34
  35 #include "main/extensions.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "vbo/vbo.h"
  41
  42 #include "tnl/t_pipeline.h"
  43
  44 #include "drivers/common/driverfuncs.h"
  45 #include "drivers/common/meta.h"
  46
  47 #include "savagedd.h"
  48 #include "savagestate.h"
  49 #include "savagetex.h"
  50 #include "savagespan.h"
  51 #include "savagetris.h"
  52 #include "savageioctl.h"
  53
  54 #include "savage_dri.h"
  55
  56 #include "drirenderbuffer.h"
  57 #include "texmem.h"
  58
  59 #define need_GL_EXT_secondary_color
  60 #include "main/remap_helper.h"
  61
  62 #include "xmlpool.h"
  63
  64 /* Driver-specific options
  65  */
  66 #define SAVAGE_ENABLE_VDMA(def) \
  67 DRI_CONF_OPT_BEGIN(enable_vdma,bool,def) \
  68         DRI_CONF_DESC(en,"Use DMA for vertex transfers") \
  69         DRI_CONF_DESC(de,"Benutze DMA für Vertextransfers") \
  70 DRI_CONF_OPT_END
  71 #define SAVAGE_ENABLE_FASTPATH(def) \
  72 DRI_CONF_OPT_BEGIN(enable_fastpath,bool,def) \
  73         DRI_CONF_DESC(en,"Use fast path for unclipped primitives") \
  74         DRI_CONF_DESC(de,"Schneller Codepfad für ungeschnittene Polygone") \
  75 DRI_CONF_OPT_END
  76 #define SAVAGE_SYNC_FRAMES(def) \
  77 DRI_CONF_OPT_BEGIN(sync_frames,bool,def) \
  78         DRI_CONF_DESC(en,"Synchronize with graphics hardware after each frame") \
  79         DRI_CONF_DESC(de,"Synchronisiere nach jedem Frame mit Grafikhardware") \
  80 DRI_CONF_OPT_END
  81
  82 /* Configuration
  83  */
  84 PUBLIC const char __driConfigOptions[] =
  85 DRI_CONF_BEGIN
  86     DRI_CONF_SECTION_QUALITY
  87         DRI_CONF_TEXTURE_DEPTH(DRI_CONF_TEXTURE_DEPTH_FB)
  88         DRI_CONF_COLOR_REDUCTION(DRI_CONF_COLOR_REDUCTION_DITHER)
  89         DRI_CONF_FLOAT_DEPTH(false)
  90     DRI_CONF_SECTION_END
  91     DRI_CONF_SECTION_PERFORMANCE
  92         SAVAGE_ENABLE_VDMA(true)
  93         SAVAGE_ENABLE_FASTPATH(true)
  94         SAVAGE_SYNC_FRAMES(false)
  95         DRI_CONF_MAX_TEXTURE_UNITS(2,1,2)
  96         DRI_CONF_TEXTURE_HEAPS(DRI_CONF_TEXTURE_HEAPS_ALL)
  97         DRI_CONF_FORCE_S3TC_ENABLE(false)
  98     DRI_CONF_SECTION_END
  99     DRI_CONF_SECTION_DEBUG
 100         DRI_CONF_NO_RAST(false)
 101     DRI_CONF_SECTION_END
 102 DRI_CONF_END;
 103 static const GLuint __driNConfigOptions = 10;
 104
 105
 106 static const struct dri_debug_control debug_control[] =
 107 {
 108     { "fall",  DEBUG_FALLBACKS },
 109     { "api",   DEBUG_VERBOSE_API },
 110     { "tex",   DEBUG_VERBOSE_TEX },
 111     { "verb",  DEBUG_VERBOSE_MSG },
 112     { "dma",   DEBUG_DMA },
 113     { "state", DEBUG_STATE },
 114     { NULL,    0 }
 115 };
 116 #ifndef SAVAGE_DEBUG
 117 int SAVAGE_DEBUG = 0;
 118 #endif
 119
 120
 121 /*For time caculating test*/
 122 #if defined(DEBUG_TIME) && DEBUG_TIME
 123 struct timeval tv_s,tv_f;
 124 unsigned long time_sum=0;
 125 struct timeval tv_s1,tv_f1;
 126 #endif
 127
 128 static const struct dri_extension card_extensions[] =
 129 {
 130     { "GL_ARB_multitexture",               NULL },
 131     { "GL_EXT_stencil_wrap",               NULL },
 132     { "GL_EXT_texture_lod_bias",           NULL },
 133     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 134     { NULL,                                NULL }
 135 };
 136
 137 static const struct dri_extension s4_extensions[] =
 138 {
 139     { "GL_ARB_texture_env_add",            NULL },
 140     { "GL_ARB_texture_mirrored_repeat",    NULL },
 141     { NULL,                                NULL }
 142 };
 143
 144 extern struct tnl_pipeline_stage _savage_texnorm_stage;
 145 extern struct tnl_pipeline_stage _savage_render_stage;
 146
 147 static const struct tnl_pipeline_stage *savage_pipeline[] = {
 148
 149    &_tnl_vertex_transform_stage,
 150    &_tnl_normal_transform_stage,
 151    &_tnl_lighting_stage,
 152    &_tnl_fog_coordinate_stage,
 153    &_tnl_texgen_stage,
 154    &_tnl_texture_transform_stage,
 155    &_savage_texnorm_stage,
 156    &_savage_render_stage,
 157    &_tnl_render_stage,
 158    0,
 159 };
 160
 161
 162 PUBLIC const __DRIextension *savageScreenExtensions[] = {
 163     &driCoreExtension.base,
 164     &driLegacyExtension.base,
 165     &driReadDrawableExtension,
 166 };
 167
 168 static GLboolean
 169 savageInitDriver(__DRIscreen *sPriv)
 170 {
 171   savageScreenPrivate *savageScreen;
 172   SAVAGEDRIPtr         gDRIPriv = (SAVAGEDRIPtr)sPriv->pDevPriv;
 173
 174    if (sPriv->devPrivSize != sizeof(SAVAGEDRIRec)) {
 175       fprintf(stderr,"\nERROR!  sizeof(SAVAGEDRIRec) does not match passed size from device driver\n");
 176       return GL_FALSE;
 177    }
 178
 179    /* Allocate the private area */
 180    savageScreen = (savageScreenPrivate *)malloc(sizeof(savageScreenPrivate));
 181    if (!savageScreen)
 182       return GL_FALSE;
 183
 184    savageScreen->driScrnPriv = sPriv;
 185    sPriv->private = (void *)savageScreen;
 186
 187    savageScreen->chipset=gDRIPriv->chipset;
 188    savageScreen->width=gDRIPriv->width;
 189    savageScreen->height=gDRIPriv->height;
 190    savageScreen->mem=gDRIPriv->mem;
 191    savageScreen->cpp=gDRIPriv->cpp;
 192    savageScreen->zpp=gDRIPriv->zpp;
 193
 194    savageScreen->agpMode=gDRIPriv->agpMode;
 195
 196    savageScreen->bufferSize=gDRIPriv->bufferSize;
 197
 198    if (gDRIPriv->cpp == 4)
 199        savageScreen->frontFormat = DV_PF_8888;
 200    else
 201        savageScreen->frontFormat = DV_PF_565;
 202    savageScreen->frontOffset=gDRIPriv->frontOffset;
 203    savageScreen->backOffset = gDRIPriv->backOffset;
 204    savageScreen->depthOffset=gDRIPriv->depthOffset;
 205
 206    savageScreen->textureOffset[SAVAGE_CARD_HEAP] =
 207                                    gDRIPriv->textureOffset;
 208    savageScreen->textureSize[SAVAGE_CARD_HEAP] =
 209                                    gDRIPriv->textureSize;
 210    savageScreen->logTextureGranularity[SAVAGE_CARD_HEAP] =
 211                                    gDRIPriv->logTextureGranularity;
 212
 213    savageScreen->textureOffset[SAVAGE_AGP_HEAP] =
 214                                    gDRIPriv->agpTextureHandle;
 215    savageScreen->textureSize[SAVAGE_AGP_HEAP] =
 216                                    gDRIPriv->agpTextureSize;
 217    savageScreen->logTextureGranularity[SAVAGE_AGP_HEAP] =
 218                                    gDRIPriv->logAgpTextureGranularity;
 219
 220    savageScreen->agpTextures.handle = gDRIPriv->agpTextureHandle;
 221    savageScreen->agpTextures.size   = gDRIPriv->agpTextureSize;
 222    if (gDRIPriv->agpTextureSize) {
 223        if (drmMap(sPriv->fd,
 224                   savageScreen->agpTextures.handle,
 225                   savageScreen->agpTextures.size,
 226                   (drmAddress *)&(savageScreen->agpTextures.map)) != 0) {
 227            free(savageScreen);
 228            sPriv->private = NULL;
 229            return GL_FALSE;
 230        }
 231    } else
 232        savageScreen->agpTextures.map = NULL;
 233
 234    savageScreen->texVirtual[SAVAGE_CARD_HEAP] =
 235              (drmAddress)(((GLubyte *)sPriv->pFB)+gDRIPriv->textureOffset);
 236    savageScreen->texVirtual[SAVAGE_AGP_HEAP] =
 237                         (drmAddress)(savageScreen->agpTextures.map);
 238
 239    savageScreen->aperture.handle = gDRIPriv->apertureHandle;
 240    savageScreen->aperture.size   = gDRIPriv->apertureSize;
 241    savageScreen->aperturePitch   = gDRIPriv->aperturePitch;
 242    if (drmMap(sPriv->fd,
 243               savageScreen->aperture.handle,
 244               savageScreen->aperture.size,
 245               (drmAddress *)&savageScreen->aperture.map) != 0)
 246    {
 247       free(savageScreen);
 248       sPriv->private = NULL;
 249       return GL_FALSE;
 250    }
 251
 252    savageScreen->bufs = drmMapBufs(sPriv->fd);
 253
 254    savageScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 255
 256    /* parse information in __driConfigOptions */
 257    driParseOptionInfo (&savageScreen->optionCache,
 258                        __driConfigOptions, __driNConfigOptions);
 259
 260    sPriv->extensions = savageScreenExtensions;
 261
 262 #if 0
 263    savageDDFastPathInit();
 264    savageDDTrifuncInit();
 265    savageDDSetupInit();
 266 #endif
 267    return GL_TRUE;
 268 }
 269
 270 /* Accessed by dlsym from dri_mesa_init.c
 271  */
 272 static void
 273 savageDestroyScreen(__DRIscreen *sPriv)
 274 {
 275    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 276
 277    if (savageScreen->bufs)
 278        drmUnmapBufs(savageScreen->bufs);
 279
 280    /* free all option information */
 281    driDestroyOptionInfo (&savageScreen->optionCache);
 282
 283    free(savageScreen);
 284    sPriv->private = NULL;
 285 }
 286
 287 static GLboolean
 288 savageCreateContext( gl_api api,
 289                      const struct gl_config *mesaVis,
 290                      __DRIcontext *driContextPriv,
 291                      void *sharedContextPrivate )
 292 {
 293    struct gl_context *ctx, *shareCtx;
 294    savageContextPtr imesa;
 295    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 296    struct dd_function_table functions;
 297    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 298    drm_savage_sarea_t *saPriv=(drm_savage_sarea_t *)(((char*)sPriv->pSAREA)+
 299                                                  savageScreen->sarea_priv_offset);
 300    int textureSize[SAVAGE_NR_TEX_HEAPS];
 301    int i;
 302    imesa = (savageContextPtr)calloc(1, sizeof(savageContext));
 303    if (!imesa) {
 304       return GL_FALSE;
 305    }
 306
 307    /* Init default driver functions then plug in savage-specific texture
 308     * functions that are needed as early as during context creation. */
 309    _mesa_init_driver_functions( &functions );
 310    savageDDInitTextureFuncs( &functions );
 311
 312    /* Allocate the Mesa context */
 313    if (sharedContextPrivate)
 314       shareCtx = ((savageContextPtr) sharedContextPrivate)->glCtx;
 315    else
 316       shareCtx = NULL;
 317    ctx = _mesa_create_context(mesaVis, shareCtx, &functions, imesa);
 318    if (!ctx) {
 319       free(imesa);
 320       return GL_FALSE;
 321    }
 322    driContextPriv->driverPrivate = imesa;
 323
 324    imesa->cmdBuf.size = SAVAGE_CMDBUF_SIZE;
 325    imesa->cmdBuf.base = imesa->cmdBuf.write =
 326        malloc(SAVAGE_CMDBUF_SIZE * sizeof(drm_savage_cmd_header_t));
 327    if (!imesa->cmdBuf.base)
 328        return GL_FALSE;
 329
 330    /* Parse configuration files */
 331    driParseConfigFiles (&imesa->optionCache, &savageScreen->optionCache,
 332                         sPriv->myNum, "savage");
 333
 334    imesa->float_depth = driQueryOptionb(&imesa->optionCache, "float_depth") &&
 335        savageScreen->chipset >= S3_SAVAGE4;
 336    imesa->no_rast = driQueryOptionb(&imesa->optionCache, "no_rast");
 337
 338 #if 0
 339    ctx->Const.MinLineWidth = 1.0;
 340    ctx->Const.MinLineWidthAA = 1.0;
 341    ctx->Const.MaxLineWidth = 3.0;
 342    ctx->Const.MaxLineWidthAA = 3.0;
 343    ctx->Const.LineWidthGranularity = 1.0;
 344 #endif
 345
 346    ctx->Const.MaxDrawBuffers = 1;
 347
 348    /* Dri stuff
 349     */
 350    imesa->hHWContext = driContextPriv->hHWContext;
 351    imesa->driFd = sPriv->fd;
 352    imesa->driHwLock = &sPriv->pSAREA->lock;
 353
 354    imesa->savageScreen = savageScreen;
 355    imesa->driScreen = sPriv;
 356    imesa->sarea = saPriv;
 357    imesa->glBuffer = NULL;
 358
 359    /* DMA buffer */
 360
 361    for(i=0;i<5;i++)
 362    {
 363        imesa->apertureBase[i] = (GLubyte *)savageScreen->aperture.map +
 364            0x01000000 * i;
 365    }
 366
 367    imesa->aperturePitch = savageScreen->aperturePitch;
 368
 369    /* change texHeap initialize to support two kind of texture heap*/
 370    /* here is some parts of initialization, others in InitDriver() */
 371
 372    (void) memset( imesa->textureHeaps, 0, sizeof( imesa->textureHeaps ) );
 373    make_empty_list( & imesa->swapped );
 374
 375    textureSize[SAVAGE_CARD_HEAP] = savageScreen->textureSize[SAVAGE_CARD_HEAP];
 376    textureSize[SAVAGE_AGP_HEAP] = savageScreen->textureSize[SAVAGE_AGP_HEAP];
 377    imesa->lastTexHeap = savageScreen->texVirtual[SAVAGE_AGP_HEAP] ? 2 : 1;
 378    switch(driQueryOptioni (&imesa->optionCache, "texture_heaps")) {
 379    case DRI_CONF_TEXTURE_HEAPS_CARD: /* only use card memory, if available */
 380        if (textureSize[SAVAGE_CARD_HEAP])
 381            imesa->lastTexHeap = 1;
 382        break;
 383    case DRI_CONF_TEXTURE_HEAPS_GART: /* only use gart memory, if available */
 384        if (imesa->lastTexHeap == 2 && textureSize[SAVAGE_AGP_HEAP])
 385            textureSize[SAVAGE_CARD_HEAP] = 0;
 386        break;
 387    /*default: Nothing to do, use all available memory. */
 388    }
 389
 390    for (i = 0; i < imesa->lastTexHeap; i++) {
 391        imesa->textureHeaps[i] = driCreateTextureHeap(
 392            i, imesa,
 393            textureSize[i],
 394            11,                                  /* 2^11 = 2k alignment */
 395            SAVAGE_NR_TEX_REGIONS,
 396            (drmTextureRegionPtr)imesa->sarea->texList[i],
 397             &imesa->sarea->texAge[i],
 398             &imesa->swapped,
 399             sizeof( savageTexObj ),
 400             (destroy_texture_object_t *) savageDestroyTexObj );
 401        /* If textureSize[i] == 0 textureHeaps[i] is NULL. This can happen
 402         * if there is not enough card memory for a card texture heap. */
 403        if (imesa->textureHeaps[i])
 404            driSetTextureSwapCounterLocation( imesa->textureHeaps[i],
 405                                              & imesa->c_textureSwaps );
 406    }
 407    imesa->texture_depth = driQueryOptioni (&imesa->optionCache,
 408                                            "texture_depth");
 409    if (imesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 410        imesa->texture_depth = ( savageScreen->cpp == 4 ) ?
 411            DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 412
 413    if (savageScreen->chipset >= S3_SAVAGE4)
 414        ctx->Const.MaxTextureUnits = 2;
 415    else
 416        ctx->Const.MaxTextureUnits = 1;
 417    if (driQueryOptioni(&imesa->optionCache, "texture_units") <
 418        ctx->Const.MaxTextureUnits)
 419        ctx->Const.MaxTextureUnits =
 420            driQueryOptioni(&imesa->optionCache, "texture_units");
 421    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 422    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 423
 424    driCalculateMaxTextureLevels( imesa->textureHeaps,
 425                                  imesa->lastTexHeap,
 426                                  & ctx->Const,
 427                                  4,
 428                                  11, /* max 2D texture size is 2048x2048 */
 429                                  0,  /* 3D textures unsupported. */
 430                                  0,  /* cube textures unsupported. */
 431                                  0,  /* texture rectangles unsupported. */
 432                                  12,
 433                                  GL_FALSE,
 434                                  0 );
 435    if (ctx->Const.MaxTextureLevels <= 6) { /*spec requires at least 64x64*/
 436        __driUtilMessage("Not enough texture memory. "
 437                         "Falling back to indirect rendering.");
 438        free(imesa);
 439        return GL_FALSE;
 440    }
 441
 442    imesa->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 443    imesa->depth_scale = (imesa->savageScreen->zpp == 2) ?
 444        (1.0F/0xffff):(1.0F/0xffffff);
 445
 446    imesa->bufferSize = savageScreen->bufferSize;
 447    imesa->dmaVtxBuf.total = 0;
 448    imesa->dmaVtxBuf.used = 0;
 449    imesa->dmaVtxBuf.flushed = 0;
 450
 451    imesa->clientVtxBuf.total = imesa->bufferSize / 4;
 452    imesa->clientVtxBuf.used = 0;
 453    imesa->clientVtxBuf.flushed = 0;
 454    imesa->clientVtxBuf.buf = (uint32_t *)malloc(imesa->bufferSize);
 455
 456    imesa->vtxBuf = &imesa->clientVtxBuf;
 457
 458    imesa->firstElt = -1;
 459
 460    /* Uninitialized vertex format. Force setting the vertex state in
 461     * savageRenderStart.
 462     */
 463    imesa->vertex_size = 0;
 464
 465    /* Utah stuff
 466     */
 467    imesa->new_state = ~0;
 468    imesa->new_gl_state = ~0;
 469    imesa->RenderIndex = ~0;
 470    imesa->dirty = ~0;
 471    imesa->lostContext = GL_TRUE;
 472    imesa->CurrentTexObj[0] = 0;
 473    imesa->CurrentTexObj[1] = 0;
 474
 475    _mesa_meta_init( ctx );
 476
 477    /* Initialize the software rasterizer and helper modules.
 478     */
 479    _swrast_CreateContext( ctx );
 480    _vbo_CreateContext( ctx );
 481    _tnl_CreateContext( ctx );
 482
 483    _swsetup_CreateContext( ctx );
 484
 485    /* Install the customized pipeline:
 486     */
 487    _tnl_destroy_pipeline( ctx );
 488    _tnl_install_pipeline( ctx, savage_pipeline );
 489
 490    imesa->enable_fastpath = driQueryOptionb(&imesa->optionCache,
 491                                             "enable_fastpath");
 492    /* DRM versions before 2.1.3 would only render triangle lists. ELTS
 493     * support was added in 2.2.0. */
 494    if (imesa->enable_fastpath && sPriv->drm_version.minor < 2) {
 495       fprintf (stderr,
 496                "*** Disabling fast path because your DRM version is buggy "
 497                "or doesn't\n*** support ELTS. You need at least Savage DRM "
 498                "version 2.2.\n");
 499       imesa->enable_fastpath = GL_FALSE;
 500    }
 501
 502    if (!savageScreen->bufs || savageScreen->chipset == S3_SUPERSAVAGE)
 503        imesa->enable_vdma = GL_FALSE;
 504    else
 505        imesa->enable_vdma = driQueryOptionb(&imesa->optionCache, "enable_vdma");
 506
 507    imesa->sync_frames = driQueryOptionb(&imesa->optionCache, "sync_frames");
 508
 509    /* Configure swrast to match hardware characteristics:
 510     */
 511    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 512    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 513    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 514    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 515
 516    ctx->DriverCtx = (void *) imesa;
 517    imesa->glCtx = ctx;
 518
 519 #ifndef SAVAGE_DEBUG
 520    SAVAGE_DEBUG = driParseDebugString( getenv( "SAVAGE_DEBUG" ),
 521                                        debug_control );
 522 #endif
 523
 524    driInitExtensions( ctx, card_extensions, GL_TRUE );
 525    if (savageScreen->chipset >= S3_SAVAGE4)
 526        driInitExtensions( ctx, s4_extensions, GL_FALSE );
 527    if (ctx->Mesa_DXTn ||
 528        driQueryOptionb (&imesa->optionCache, "force_s3tc_enable")) {
 529        _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 530        if (savageScreen->chipset >= S3_SAVAGE4)
 531            /* This extension needs DXT3 and DTX5 support in hardware.
 532             * Not available on Savage3D/MX/IX. */
 533            _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 534    }
 535
 536    savageDDInitStateFuncs( ctx );
 537    savageDDInitSpanFuncs( ctx );
 538    savageDDInitDriverFuncs( ctx );
 539    savageDDInitIoctlFuncs( ctx );
 540    savageInitTriFuncs( ctx );
 541
 542    savageDDInitState( imesa );
 543
 544    driContextPriv->driverPrivate = (void *) imesa;
 545
 546    return GL_TRUE;
 547 }
 548
 549 static void
 550 savageDestroyContext(__DRIcontext *driContextPriv)
 551 {
 552    savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 553    GLuint i;
 554
 555    assert (imesa); /* should never be NULL */
 556    if (imesa) {
 557       savageFlushVertices(imesa);
 558       savageReleaseIndexedVerts(imesa);
 559       savageFlushCmdBuf(imesa, GL_TRUE); /* release DMA buffer */
 560       WAIT_IDLE_EMPTY(imesa);
 561
 562       for (i = 0; i < imesa->lastTexHeap; i++)
 563          driDestroyTextureHeap(imesa->textureHeaps[i]);
 564
 565       free(imesa->cmdBuf.base);
 566       free(imesa->clientVtxBuf.buf);
 567
 568       _mesa_meta_free( imesa->glCtx );
 569
 570       _swsetup_DestroyContext(imesa->glCtx );
 571       _tnl_DestroyContext( imesa->glCtx );
 572       _vbo_DestroyContext( imesa->glCtx );
 573       _swrast_DestroyContext( imesa->glCtx );
 574
 575       /* free the Mesa context */
 576       imesa->glCtx->DriverCtx = NULL;
 577       _mesa_destroy_context(imesa->glCtx);
 578
 579       /* no longer use vertex_dma_buf*/
 580       free(imesa);
 581    }
 582 }
 583
 584
 585 static GLboolean
 586 savageCreateBuffer( __DRIscreen *driScrnPriv,
 587                     __DRIdrawable *driDrawPriv,
 588                     const struct gl_config *mesaVis,
 589                     GLboolean isPixmap)
 590 {
 591    savageScreenPrivate *screen = (savageScreenPrivate *) driScrnPriv->private;
 592
 593    if (isPixmap) {
 594       return GL_FALSE; /* not implemented */
 595    }
 596    else {
 597       GLboolean swStencil = mesaVis->stencilBits > 0 && mesaVis->depthBits != 24;
 598       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 599       /*
 600        * XXX: this value needs to be set according to the config file
 601        * setting.  But we don't get that until we create a rendering
 602        * context!!!!
 603        */
 604       GLboolean float_depth = GL_FALSE;
 605
 606       {
 607          driRenderbuffer *frontRb
 608             = driNewRenderbuffer(MESA_FORMAT_ARGB8888,
 609                                  (GLubyte *) screen->aperture.map
 610                                  + 0x01000000 * TARGET_FRONT,
 611                                  screen->cpp,
 612                                  screen->frontOffset, screen->aperturePitch,
 613                                  driDrawPriv);
 614          savageSetSpanFunctions(frontRb, mesaVis, float_depth);
 615          assert(frontRb->Base.Data);
 616          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 617       }
 618
 619       if (mesaVis->doubleBufferMode) {
 620          driRenderbuffer *backRb
 621             = driNewRenderbuffer(MESA_FORMAT_ARGB8888,
 622                                  (GLubyte *) screen->aperture.map
 623                                  + 0x01000000 * TARGET_BACK,
 624                                  screen->cpp,
 625                                  screen->backOffset, screen->aperturePitch,
 626                                  driDrawPriv);
 627          savageSetSpanFunctions(backRb, mesaVis, float_depth);
 628          assert(backRb->Base.Data);
 629          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 630       }
 631
 632       if (mesaVis->depthBits == 16) {
 633          driRenderbuffer *depthRb
 634             = driNewRenderbuffer(MESA_FORMAT_Z16,
 635                                  (GLubyte *) screen->aperture.map
 636                                  + 0x01000000 * TARGET_DEPTH,
 637                                  screen->zpp,
 638                                  screen->depthOffset, screen->aperturePitch,
 639                                  driDrawPriv);
 640          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 641          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 642       }
 643       else if (mesaVis->depthBits == 24) {
 644          driRenderbuffer *depthRb
 645             = driNewRenderbuffer(MESA_FORMAT_S8_Z24,
 646                                  (GLubyte *) screen->aperture.map
 647                                  + 0x01000000 * TARGET_DEPTH,
 648                                  screen->zpp,
 649                                  screen->depthOffset, screen->aperturePitch,
 650                                  driDrawPriv);
 651          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 652          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 653       }
 654
 655       if (mesaVis->stencilBits > 0 && !swStencil) {
 656          driRenderbuffer *stencilRb
 657             = driNewRenderbuffer(MESA_FORMAT_S8,
 658                                  (GLubyte *) screen->aperture.map
 659                                  + 0x01000000 * TARGET_DEPTH,
 660                                  screen->zpp,
 661                                  screen->depthOffset, screen->aperturePitch,
 662                                  driDrawPriv);
 663          savageSetSpanFunctions(stencilRb, mesaVis, float_depth);
 664          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 665       }
 666
 667       _mesa_add_soft_renderbuffers(fb,
 668                                    GL_FALSE, /* color */
 669                                    GL_FALSE, /* depth */
 670                                    swStencil,
 671                                    mesaVis->accumRedBits > 0,
 672                                    GL_FALSE, /* alpha */
 673                                    GL_FALSE /* aux */);
 674       driDrawPriv->driverPrivate = (void *) fb;
 675
 676       return (driDrawPriv->driverPrivate != NULL);
 677    }
 678 }
 679
 680 static void
 681 savageDestroyBuffer(__DRIdrawable *driDrawPriv)
 682 {
 683    _mesa_reference_framebuffer((struct gl_framebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 684 }
 685
 686 #if 0
 687 void XMesaSwapBuffers(__DRIdrawable *driDrawPriv)
 688 {
 689    /* XXX should do swap according to the buffer, not the context! */
 690    savageContextPtr imesa = savageCtx;
 691
 692    FLUSH_VB( imesa->glCtx, "swap buffers" );
 693    savageSwapBuffers(imesa);
 694 }
 695 #endif
 696
 697
 698 void savageXMesaSetClipRects(savageContextPtr imesa)
 699 {
 700    __DRIdrawable *dPriv = imesa->driDrawable;
 701
 702    if ((dPriv->numBackClipRects == 0)
 703        || (imesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)) {
 704       imesa->numClipRects = dPriv->numClipRects;
 705       imesa->pClipRects = dPriv->pClipRects;
 706       imesa->drawX = dPriv->x;
 707       imesa->drawY = dPriv->y;
 708    } else {
 709       imesa->numClipRects = dPriv->numBackClipRects;
 710       imesa->pClipRects = dPriv->pBackClipRects;
 711       imesa->drawX = dPriv->backX;
 712       imesa->drawY = dPriv->backY;
 713    }
 714
 715    savageCalcViewport( imesa->glCtx );
 716 }
 717
 718
 719 static void savageXMesaWindowMoved( savageContextPtr imesa )
 720 {
 721    __DRIdrawable *const drawable = imesa->driDrawable;
 722    __DRIdrawable *const readable = imesa->driReadable;
 723
 724    if (0)
 725       fprintf(stderr, "savageXMesaWindowMoved\n\n");
 726
 727    savageXMesaSetClipRects(imesa);
 728
 729    driUpdateFramebufferSize(imesa->glCtx, drawable);
 730    if (drawable != readable) {
 731       driUpdateFramebufferSize(imesa->glCtx, readable);
 732    }
 733 }
 734
 735
 736 static GLboolean
 737 savageUnbindContext(__DRIcontext *driContextPriv)
 738 {
 739    savageContextPtr savage = (savageContextPtr) driContextPriv->driverPrivate;
 740    if (savage)
 741       savage->dirty = ~0;
 742
 743    return GL_TRUE;
 744 }
 745
 746 #if 0
 747 static GLboolean
 748 savageOpenFullScreen(__DRIcontext *driContextPriv)
 749 {
 750
 751
 752
 753     if (driContextPriv) {
 754       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 755       imesa->IsFullScreen = GL_TRUE;
 756       imesa->backup_frontOffset = imesa->savageScreen->frontOffset;
 757       imesa->backup_backOffset = imesa->savageScreen->backOffset;
 758       imesa->backup_frontBitmapDesc = imesa->savageScreen->frontBitmapDesc;
 759       imesa->savageScreen->frontBitmapDesc = imesa->savageScreen->backBitmapDesc;
 760       imesa->toggle = TARGET_BACK;
 761    }
 762
 763     return GL_TRUE;
 764 }
 765
 766 static GLboolean
 767 savageCloseFullScreen(__DRIcontext *driContextPriv)
 768 {
 769
 770     if (driContextPriv) {
 771       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 772       WAIT_IDLE_EMPTY(imesa);
 773       imesa->IsFullScreen = GL_FALSE;
 774       imesa->savageScreen->frontOffset = imesa->backup_frontOffset;
 775       imesa->savageScreen->backOffset = imesa->backup_backOffset;
 776       imesa->savageScreen->frontBitmapDesc = imesa->backup_frontBitmapDesc;
 777    }
 778     return GL_TRUE;
 779 }
 780 #endif
 781
 782 static GLboolean
 783 savageMakeCurrent(__DRIcontext *driContextPriv,
 784                   __DRIdrawable *driDrawPriv,
 785                   __DRIdrawable *driReadPriv)
 786 {
 787    if (driContextPriv) {
 788       savageContextPtr imesa
 789          = (savageContextPtr) driContextPriv->driverPrivate;
 790       struct gl_framebuffer *drawBuffer
 791          = (struct gl_framebuffer *) driDrawPriv->driverPrivate;
 792       struct gl_framebuffer *readBuffer
 793          = (struct gl_framebuffer *) driReadPriv->driverPrivate;
 794       driRenderbuffer *frontRb = (driRenderbuffer *)
 795          drawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
 796       driRenderbuffer *backRb = (driRenderbuffer *)
 797          drawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
 798
 799       assert(frontRb->Base.Data);
 800       if (imesa->glCtx->Visual.doubleBufferMode) {
 801          assert(backRb->Base.Data);
 802       }
 803
 804       imesa->driReadable = driReadPriv;
 805       imesa->driDrawable = driDrawPriv;
 806       imesa->dirty = ~0;
 807
 808       _mesa_make_current(imesa->glCtx, drawBuffer, readBuffer);
 809
 810       savageXMesaWindowMoved( imesa );
 811    }
 812    else
 813    {
 814       _mesa_make_current(NULL, NULL, NULL);
 815    }
 816    return GL_TRUE;
 817 }
 818
 819
 820 void savageGetLock( savageContextPtr imesa, GLuint flags )
 821 {
 822    __DRIdrawable *const drawable = imesa->driDrawable;
 823    __DRIdrawable *const readable = imesa->driReadable;
 824    __DRIscreen *sPriv = imesa->driScreen;
 825    drm_savage_sarea_t *sarea = imesa->sarea;
 826    int me = imesa->hHWContext;
 827    int stamp = drawable->lastStamp;
 828    int heap;
 829    unsigned int timestamp = 0;
 830
 831
 832
 833    /* We know there has been contention.
 834     */
 835    drmGetLock(imesa->driFd, imesa->hHWContext, flags);
 836
 837
 838    /* Note contention for throttling hint
 839     */
 840    imesa->any_contend = 1;
 841
 842    /* If the window moved, may need to set a new cliprect now.
 843     *
 844     * NOTE: This releases and regains the hw lock, so all state
 845     * checking must be done *after* this call:
 846     */
 847    DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
 848    if (drawable != readable) {
 849       DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
 850    }
 851
 852
 853    /* If we lost context, need to dump all registers to hardware.
 854     * Note that we don't care about 2d contexts, even if they perform
 855     * accelerated commands, so the DRI locking in the X server is even
 856     * more broken than usual.
 857     */
 858    if (sarea->ctxOwner != me) {
 859       imesa->dirty |= (SAVAGE_UPLOAD_LOCAL |
 860                        SAVAGE_UPLOAD_GLOBAL |
 861                        SAVAGE_UPLOAD_FOGTBL |
 862                        SAVAGE_UPLOAD_TEX0 |
 863                        SAVAGE_UPLOAD_TEX1 |
 864                        SAVAGE_UPLOAD_TEXGLOBAL);
 865       imesa->lostContext = GL_TRUE;
 866       sarea->ctxOwner = me;
 867    }
 868
 869    for (heap = 0; heap < imesa->lastTexHeap; ++heap) {
 870       /* If a heap was changed, update its timestamp. Do this before
 871        * DRI_AGE_TEXTURES updates the local_age. */
 872       if (imesa->textureHeaps[heap] &&
 873           imesa->textureHeaps[heap]->global_age[0] >
 874           imesa->textureHeaps[heap]->local_age) {
 875          if (timestamp == 0)
 876             timestamp = savageEmitEventLocked(imesa, 0);
 877          imesa->textureHeaps[heap]->timestamp = timestamp;
 878       }
 879       DRI_AGE_TEXTURES( imesa->textureHeaps[heap] );
 880    }
 881
 882    if (drawable->lastStamp != stamp) {
 883       driUpdateFramebufferSize(imesa->glCtx, drawable);
 884       savageXMesaWindowMoved( imesa );
 885    }
 886 }
 887
 888 static const  __DRIconfig **
 889 savageFillInModes( __DRIscreen *psp,
 890                    unsigned pixel_bits, unsigned depth_bits,
 891                    unsigned stencil_bits, GLboolean have_back_buffer )
 892 {
 893     __DRIconfig **configs;
 894     struct gl_config * m;
 895     unsigned depth_buffer_factor;
 896     unsigned back_buffer_factor;
 897     GLenum fb_format;
 898     GLenum fb_type;
 899     int i;
 900
 901     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 902      * enough to add support.  Basically, if a context is created with an
 903      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 904      * will never be used.
 905      *
 906      * FK: What about drivers that don't use page flipping? Could they
 907      * just expose GLX_SWAP_COPY_OML?
 908      */
 909     static const GLenum back_buffer_modes[] = {
 910         GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
 911     };
 912
 913     uint8_t depth_bits_array[2];
 914     uint8_t stencil_bits_array[2];
 915     uint8_t msaa_samples_array[1];
 916
 917     depth_bits_array[0] = depth_bits;
 918     depth_bits_array[1] = depth_bits;
 919
 920     /* Just like with the accumulation buffer, always provide some modes
 921      * with a stencil buffer.  It will be a sw fallback, but some apps won't
 922      * care about that.
 923      */
 924     stencil_bits_array[0] = 0;
 925     stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 926
 927     msaa_samples_array[0] = 0;
 928
 929     depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
 930     back_buffer_factor  = (have_back_buffer) ? 2 : 1;
 931
 932     if ( pixel_bits == 16 ) {
 933         fb_format = GL_RGB;
 934         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 935     }
 936     else {
 937         fb_format = GL_BGR;
 938         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 939     }
 940
 941     configs = driCreateConfigs(fb_format, fb_type,
 942                                depth_bits_array, stencil_bits_array,
 943                                depth_buffer_factor,
 944                                back_buffer_modes, back_buffer_factor,
 945                                msaa_samples_array, 1, GL_TRUE);
 946     if (configs == NULL) {
 947         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 948                  __func__, __LINE__ );
 949         return NULL;
 950     }
 951
 952     /* Mark the visual as slow if there are "fake" stencil bits.
 953      */
 954     for (i = 0; configs[i]; i++) {
 955         m = &configs[i]->modes;
 956         if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 957             m->visualRating = GLX_SLOW_CONFIG;
 958         }
 959     }
 960
 961     return (const __DRIconfig **) configs;
 962 }
 963
 964
 965 /**
 966  * This is the driver specific part of the createNewScreen entry point.
 967  *
 968  * \todo maybe fold this into intelInitDriver
 969  *
 970  * \return the struct gl_config supported by this driver
 971  */
 972 static const __DRIconfig **
 973 savageInitScreen(__DRIscreen *psp)
 974 {
 975    static const __DRIversion ddx_expected = { 2, 0, 0 };
 976    static const __DRIversion dri_expected = { 4, 0, 0 };
 977    static const __DRIversion drm_expected = { 2, 1, 0 };
 978    SAVAGEDRIPtr dri_priv = (SAVAGEDRIPtr)psp->pDevPriv;
 979
 980    if ( ! driCheckDriDdxDrmVersions2( "Savage",
 981                                       &psp->dri_version, & dri_expected,
 982                                       &psp->ddx_version, & ddx_expected,
 983                                       &psp->drm_version, & drm_expected ) )
 984       return NULL;
 985
 986    if (!savageInitDriver(psp))
 987        return NULL;
 988
 989    return savageFillInModes( psp,
 990                              dri_priv->cpp*8,
 991                              (dri_priv->cpp == 2) ? 16 : 24,
 992                              (dri_priv->cpp == 2) ? 0  : 8,
 993                              (dri_priv->backOffset != dri_priv->depthOffset) );
 994 }
 995
 996 const struct __DriverAPIRec driDriverAPI = {
 997    savageInitScreen,
 998    savageDestroyScreen,
 999    savageCreateContext,
1000    savageDestroyContext,
1001    savageCreateBuffer,
1002    savageDestroyBuffer,
1003    savageSwapBuffers,
1004    savageMakeCurrent,
1005    savageUnbindContext
1006 };
1007
1008 /* This is the table of extensions that the loader will dlsym() for. */
1009 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1010     &driCoreExtension.base,
1011     &driLegacyExtension.base,
1012     NULL
1013 };