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 #include "savage_bci.h"
  54
  55 #include "savage_dri.h"
  56
  57 #include "drirenderbuffer.h"
  58 #include "texmem.h"
  59
  60 #define need_GL_EXT_secondary_color
  61 #include "main/remap_helper.h"
  62
  63 #include "xmlpool.h"
  64
  65 /* Driver-specific options
  66  */
  67 #define SAVAGE_ENABLE_VDMA(def) \
  68 DRI_CONF_OPT_BEGIN(enable_vdma,bool,def) \
  69         DRI_CONF_DESC(en,"Use DMA for vertex transfers") \
  70         DRI_CONF_DESC(de,"Benutze DMA für Vertextransfers") \
  71 DRI_CONF_OPT_END
  72 #define SAVAGE_ENABLE_FASTPATH(def) \
  73 DRI_CONF_OPT_BEGIN(enable_fastpath,bool,def) \
  74         DRI_CONF_DESC(en,"Use fast path for unclipped primitives") \
  75         DRI_CONF_DESC(de,"Schneller Codepfad für ungeschnittene Polygone") \
  76 DRI_CONF_OPT_END
  77 #define SAVAGE_SYNC_FRAMES(def) \
  78 DRI_CONF_OPT_BEGIN(sync_frames,bool,def) \
  79         DRI_CONF_DESC(en,"Synchronize with graphics hardware after each frame") \
  80         DRI_CONF_DESC(de,"Synchronisiere nach jedem Frame mit Grafikhardware") \
  81 DRI_CONF_OPT_END
  82
  83 /* Configuration
  84  */
  85 PUBLIC const char __driConfigOptions[] =
  86 DRI_CONF_BEGIN
  87     DRI_CONF_SECTION_QUALITY
  88         DRI_CONF_TEXTURE_DEPTH(DRI_CONF_TEXTURE_DEPTH_FB)
  89         DRI_CONF_COLOR_REDUCTION(DRI_CONF_COLOR_REDUCTION_DITHER)
  90         DRI_CONF_FLOAT_DEPTH(false)
  91     DRI_CONF_SECTION_END
  92     DRI_CONF_SECTION_PERFORMANCE
  93         SAVAGE_ENABLE_VDMA(true)
  94         SAVAGE_ENABLE_FASTPATH(true)
  95         SAVAGE_SYNC_FRAMES(false)
  96         DRI_CONF_MAX_TEXTURE_UNITS(2,1,2)
  97         DRI_CONF_TEXTURE_HEAPS(DRI_CONF_TEXTURE_HEAPS_ALL)
  98         DRI_CONF_FORCE_S3TC_ENABLE(false)
  99     DRI_CONF_SECTION_END
 100     DRI_CONF_SECTION_DEBUG
 101         DRI_CONF_NO_RAST(false)
 102     DRI_CONF_SECTION_END
 103 DRI_CONF_END;
 104 static const GLuint __driNConfigOptions = 10;
 105
 106
 107 static const struct dri_debug_control debug_control[] =
 108 {
 109     { "fall",  DEBUG_FALLBACKS },
 110     { "api",   DEBUG_VERBOSE_API },
 111     { "tex",   DEBUG_VERBOSE_TEX },
 112     { "verb",  DEBUG_VERBOSE_MSG },
 113     { "dma",   DEBUG_DMA },
 114     { "state", DEBUG_STATE },
 115     { NULL,    0 }
 116 };
 117 #ifndef SAVAGE_DEBUG
 118 int SAVAGE_DEBUG = 0;
 119 #endif
 120
 121
 122 /*For time caculating test*/
 123 #if defined(DEBUG_TIME) && DEBUG_TIME
 124 struct timeval tv_s,tv_f;
 125 unsigned long time_sum=0;
 126 struct timeval tv_s1,tv_f1;
 127 #endif
 128
 129 static const struct dri_extension card_extensions[] =
 130 {
 131     { "GL_ARB_multitexture",               NULL },
 132     { "GL_EXT_stencil_wrap",               NULL },
 133     { "GL_EXT_texture_lod_bias",           NULL },
 134     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 135     { NULL,                                NULL }
 136 };
 137
 138 static const struct dri_extension s4_extensions[] =
 139 {
 140     { "GL_ARB_texture_env_add",            NULL },
 141     { "GL_ARB_texture_mirrored_repeat",    NULL },
 142     { NULL,                                NULL }
 143 };
 144
 145 extern struct tnl_pipeline_stage _savage_texnorm_stage;
 146 extern struct tnl_pipeline_stage _savage_render_stage;
 147
 148 static const struct tnl_pipeline_stage *savage_pipeline[] = {
 149
 150    &_tnl_vertex_transform_stage,
 151    &_tnl_normal_transform_stage,
 152    &_tnl_lighting_stage,
 153    &_tnl_fog_coordinate_stage,
 154    &_tnl_texgen_stage,
 155    &_tnl_texture_transform_stage,
 156    &_savage_texnorm_stage,
 157    &_savage_render_stage,
 158    &_tnl_render_stage,
 159    0,
 160 };
 161
 162
 163 PUBLIC const __DRIextension *savageScreenExtensions[] = {
 164     &driCoreExtension.base,
 165     &driLegacyExtension.base,
 166     &driReadDrawableExtension,
 167 };
 168
 169 static GLboolean
 170 savageInitDriver(__DRIscreen *sPriv)
 171 {
 172   savageScreenPrivate *savageScreen;
 173   SAVAGEDRIPtr         gDRIPriv = (SAVAGEDRIPtr)sPriv->pDevPriv;
 174
 175    if (sPriv->devPrivSize != sizeof(SAVAGEDRIRec)) {
 176       fprintf(stderr,"\nERROR!  sizeof(SAVAGEDRIRec) does not match passed size from device driver\n");
 177       return GL_FALSE;
 178    }
 179
 180    /* Allocate the private area */
 181    savageScreen = (savageScreenPrivate *)malloc(sizeof(savageScreenPrivate));
 182    if (!savageScreen)
 183       return GL_FALSE;
 184
 185    savageScreen->driScrnPriv = sPriv;
 186    sPriv->private = (void *)savageScreen;
 187
 188    savageScreen->chipset=gDRIPriv->chipset;
 189    savageScreen->width=gDRIPriv->width;
 190    savageScreen->height=gDRIPriv->height;
 191    savageScreen->mem=gDRIPriv->mem;
 192    savageScreen->cpp=gDRIPriv->cpp;
 193    savageScreen->zpp=gDRIPriv->zpp;
 194
 195    savageScreen->agpMode=gDRIPriv->agpMode;
 196
 197    savageScreen->bufferSize=gDRIPriv->bufferSize;
 198
 199    if (gDRIPriv->cpp == 4)
 200        savageScreen->frontFormat = DV_PF_8888;
 201    else
 202        savageScreen->frontFormat = DV_PF_565;
 203    savageScreen->frontOffset=gDRIPriv->frontOffset;
 204    savageScreen->backOffset = gDRIPriv->backOffset;
 205    savageScreen->depthOffset=gDRIPriv->depthOffset;
 206
 207    savageScreen->textureOffset[SAVAGE_CARD_HEAP] =
 208                                    gDRIPriv->textureOffset;
 209    savageScreen->textureSize[SAVAGE_CARD_HEAP] =
 210                                    gDRIPriv->textureSize;
 211    savageScreen->logTextureGranularity[SAVAGE_CARD_HEAP] =
 212                                    gDRIPriv->logTextureGranularity;
 213
 214    savageScreen->textureOffset[SAVAGE_AGP_HEAP] =
 215                                    gDRIPriv->agpTextureHandle;
 216    savageScreen->textureSize[SAVAGE_AGP_HEAP] =
 217                                    gDRIPriv->agpTextureSize;
 218    savageScreen->logTextureGranularity[SAVAGE_AGP_HEAP] =
 219                                    gDRIPriv->logAgpTextureGranularity;
 220
 221    savageScreen->agpTextures.handle = gDRIPriv->agpTextureHandle;
 222    savageScreen->agpTextures.size   = gDRIPriv->agpTextureSize;
 223    if (gDRIPriv->agpTextureSize) {
 224        if (drmMap(sPriv->fd,
 225                   savageScreen->agpTextures.handle,
 226                   savageScreen->agpTextures.size,
 227                   (drmAddress *)&(savageScreen->agpTextures.map)) != 0) {
 228            free(savageScreen);
 229            sPriv->private = NULL;
 230            return GL_FALSE;
 231        }
 232    } else
 233        savageScreen->agpTextures.map = NULL;
 234
 235    savageScreen->texVirtual[SAVAGE_CARD_HEAP] =
 236              (drmAddress)(((GLubyte *)sPriv->pFB)+gDRIPriv->textureOffset);
 237    savageScreen->texVirtual[SAVAGE_AGP_HEAP] =
 238                         (drmAddress)(savageScreen->agpTextures.map);
 239
 240    savageScreen->aperture.handle = gDRIPriv->apertureHandle;
 241    savageScreen->aperture.size   = gDRIPriv->apertureSize;
 242    savageScreen->aperturePitch   = gDRIPriv->aperturePitch;
 243    if (drmMap(sPriv->fd,
 244               savageScreen->aperture.handle,
 245               savageScreen->aperture.size,
 246               (drmAddress *)&savageScreen->aperture.map) != 0)
 247    {
 248       free(savageScreen);
 249       sPriv->private = NULL;
 250       return GL_FALSE;
 251    }
 252
 253    savageScreen->bufs = drmMapBufs(sPriv->fd);
 254
 255    savageScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 256
 257    /* parse information in __driConfigOptions */
 258    driParseOptionInfo (&savageScreen->optionCache,
 259                        __driConfigOptions, __driNConfigOptions);
 260
 261    sPriv->extensions = savageScreenExtensions;
 262
 263 #if 0
 264    savageDDFastPathInit();
 265    savageDDTrifuncInit();
 266    savageDDSetupInit();
 267 #endif
 268    return GL_TRUE;
 269 }
 270
 271 /* Accessed by dlsym from dri_mesa_init.c
 272  */
 273 static void
 274 savageDestroyScreen(__DRIscreen *sPriv)
 275 {
 276    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 277
 278    if (savageScreen->bufs)
 279        drmUnmapBufs(savageScreen->bufs);
 280
 281    /* free all option information */
 282    driDestroyOptionInfo (&savageScreen->optionCache);
 283
 284    free(savageScreen);
 285    sPriv->private = NULL;
 286 }
 287
 288 static GLboolean
 289 savageCreateContext( gl_api api,
 290                      const struct gl_config *mesaVis,
 291                      __DRIcontext *driContextPriv,
 292                      void *sharedContextPrivate )
 293 {
 294    GLcontext *ctx, *shareCtx;
 295    savageContextPtr imesa;
 296    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 297    struct dd_function_table functions;
 298    savageScreenPrivate *savageScreen = (savageScreenPrivate *)sPriv->private;
 299    drm_savage_sarea_t *saPriv=(drm_savage_sarea_t *)(((char*)sPriv->pSAREA)+
 300                                                  savageScreen->sarea_priv_offset);
 301    int textureSize[SAVAGE_NR_TEX_HEAPS];
 302    int i;
 303    imesa = (savageContextPtr)calloc(1, sizeof(savageContext));
 304    if (!imesa) {
 305       return GL_FALSE;
 306    }
 307
 308    /* Init default driver functions then plug in savage-specific texture
 309     * functions that are needed as early as during context creation. */
 310    _mesa_init_driver_functions( &functions );
 311    savageDDInitTextureFuncs( &functions );
 312
 313    /* Allocate the Mesa context */
 314    if (sharedContextPrivate)
 315       shareCtx = ((savageContextPtr) sharedContextPrivate)->glCtx;
 316    else
 317       shareCtx = NULL;
 318    ctx = _mesa_create_context(mesaVis, shareCtx, &functions, imesa);
 319    if (!ctx) {
 320       free(imesa);
 321       return GL_FALSE;
 322    }
 323    driContextPriv->driverPrivate = imesa;
 324
 325    imesa->cmdBuf.size = SAVAGE_CMDBUF_SIZE;
 326    imesa->cmdBuf.base = imesa->cmdBuf.write =
 327        malloc(SAVAGE_CMDBUF_SIZE * sizeof(drm_savage_cmd_header_t));
 328    if (!imesa->cmdBuf.base)
 329        return GL_FALSE;
 330
 331    /* Parse configuration files */
 332    driParseConfigFiles (&imesa->optionCache, &savageScreen->optionCache,
 333                         sPriv->myNum, "savage");
 334
 335    imesa->float_depth = driQueryOptionb(&imesa->optionCache, "float_depth") &&
 336        savageScreen->chipset >= S3_SAVAGE4;
 337    imesa->no_rast = driQueryOptionb(&imesa->optionCache, "no_rast");
 338
 339 #if 0
 340    ctx->Const.MinLineWidth = 1.0;
 341    ctx->Const.MinLineWidthAA = 1.0;
 342    ctx->Const.MaxLineWidth = 3.0;
 343    ctx->Const.MaxLineWidthAA = 3.0;
 344    ctx->Const.LineWidthGranularity = 1.0;
 345 #endif
 346
 347    ctx->Const.MaxDrawBuffers = 1;
 348
 349    /* Dri stuff
 350     */
 351    imesa->hHWContext = driContextPriv->hHWContext;
 352    imesa->driFd = sPriv->fd;
 353    imesa->driHwLock = &sPriv->pSAREA->lock;
 354
 355    imesa->savageScreen = savageScreen;
 356    imesa->driScreen = sPriv;
 357    imesa->sarea = saPriv;
 358    imesa->glBuffer = NULL;
 359
 360    /* DMA buffer */
 361
 362    for(i=0;i<5;i++)
 363    {
 364        imesa->apertureBase[i] = (GLubyte *)savageScreen->aperture.map +
 365            0x01000000 * i;
 366    }
 367
 368    imesa->aperturePitch = savageScreen->aperturePitch;
 369
 370    /* change texHeap initialize to support two kind of texture heap*/
 371    /* here is some parts of initialization, others in InitDriver() */
 372
 373    (void) memset( imesa->textureHeaps, 0, sizeof( imesa->textureHeaps ) );
 374    make_empty_list( & imesa->swapped );
 375
 376    textureSize[SAVAGE_CARD_HEAP] = savageScreen->textureSize[SAVAGE_CARD_HEAP];
 377    textureSize[SAVAGE_AGP_HEAP] = savageScreen->textureSize[SAVAGE_AGP_HEAP];
 378    imesa->lastTexHeap = savageScreen->texVirtual[SAVAGE_AGP_HEAP] ? 2 : 1;
 379    switch(driQueryOptioni (&imesa->optionCache, "texture_heaps")) {
 380    case DRI_CONF_TEXTURE_HEAPS_CARD: /* only use card memory, if available */
 381        if (textureSize[SAVAGE_CARD_HEAP])
 382            imesa->lastTexHeap = 1;
 383        break;
 384    case DRI_CONF_TEXTURE_HEAPS_GART: /* only use gart memory, if available */
 385        if (imesa->lastTexHeap == 2 && textureSize[SAVAGE_AGP_HEAP])
 386            textureSize[SAVAGE_CARD_HEAP] = 0;
 387        break;
 388    /*default: Nothing to do, use all available memory. */
 389    }
 390
 391    for (i = 0; i < imesa->lastTexHeap; i++) {
 392        imesa->textureHeaps[i] = driCreateTextureHeap(
 393            i, imesa,
 394            textureSize[i],
 395            11,                                  /* 2^11 = 2k alignment */
 396            SAVAGE_NR_TEX_REGIONS,
 397            (drmTextureRegionPtr)imesa->sarea->texList[i],
 398             &imesa->sarea->texAge[i],
 399             &imesa->swapped,
 400             sizeof( savageTexObj ),
 401             (destroy_texture_object_t *) savageDestroyTexObj );
 402        /* If textureSize[i] == 0 textureHeaps[i] is NULL. This can happen
 403         * if there is not enough card memory for a card texture heap. */
 404        if (imesa->textureHeaps[i])
 405            driSetTextureSwapCounterLocation( imesa->textureHeaps[i],
 406                                              & imesa->c_textureSwaps );
 407    }
 408    imesa->texture_depth = driQueryOptioni (&imesa->optionCache,
 409                                            "texture_depth");
 410    if (imesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 411        imesa->texture_depth = ( savageScreen->cpp == 4 ) ?
 412            DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 413
 414    if (savageScreen->chipset >= S3_SAVAGE4)
 415        ctx->Const.MaxTextureUnits = 2;
 416    else
 417        ctx->Const.MaxTextureUnits = 1;
 418    if (driQueryOptioni(&imesa->optionCache, "texture_units") <
 419        ctx->Const.MaxTextureUnits)
 420        ctx->Const.MaxTextureUnits =
 421            driQueryOptioni(&imesa->optionCache, "texture_units");
 422    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 423    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 424
 425    driCalculateMaxTextureLevels( imesa->textureHeaps,
 426                                  imesa->lastTexHeap,
 427                                  & ctx->Const,
 428                                  4,
 429                                  11, /* max 2D texture size is 2048x2048 */
 430                                  0,  /* 3D textures unsupported. */
 431                                  0,  /* cube textures unsupported. */
 432                                  0,  /* texture rectangles unsupported. */
 433                                  12,
 434                                  GL_FALSE,
 435                                  0 );
 436    if (ctx->Const.MaxTextureLevels <= 6) { /*spec requires at least 64x64*/
 437        __driUtilMessage("Not enough texture memory. "
 438                         "Falling back to indirect rendering.");
 439        free(imesa);
 440        return GL_FALSE;
 441    }
 442
 443    imesa->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 444    imesa->depth_scale = (imesa->savageScreen->zpp == 2) ?
 445        (1.0F/0xffff):(1.0F/0xffffff);
 446
 447    imesa->bufferSize = savageScreen->bufferSize;
 448    imesa->dmaVtxBuf.total = 0;
 449    imesa->dmaVtxBuf.used = 0;
 450    imesa->dmaVtxBuf.flushed = 0;
 451
 452    imesa->clientVtxBuf.total = imesa->bufferSize / 4;
 453    imesa->clientVtxBuf.used = 0;
 454    imesa->clientVtxBuf.flushed = 0;
 455    imesa->clientVtxBuf.buf = (uint32_t *)malloc(imesa->bufferSize);
 456
 457    imesa->vtxBuf = &imesa->clientVtxBuf;
 458
 459    imesa->firstElt = -1;
 460
 461    /* Uninitialized vertex format. Force setting the vertex state in
 462     * savageRenderStart.
 463     */
 464    imesa->vertex_size = 0;
 465
 466    /* Utah stuff
 467     */
 468    imesa->new_state = ~0;
 469    imesa->new_gl_state = ~0;
 470    imesa->RenderIndex = ~0;
 471    imesa->dirty = ~0;
 472    imesa->lostContext = GL_TRUE;
 473    imesa->CurrentTexObj[0] = 0;
 474    imesa->CurrentTexObj[1] = 0;
 475
 476    _mesa_meta_init( ctx );
 477
 478    /* Initialize the software rasterizer and helper modules.
 479     */
 480    _swrast_CreateContext( ctx );
 481    _vbo_CreateContext( ctx );
 482    _tnl_CreateContext( ctx );
 483
 484    _swsetup_CreateContext( ctx );
 485
 486    /* Install the customized pipeline:
 487     */
 488    _tnl_destroy_pipeline( ctx );
 489    _tnl_install_pipeline( ctx, savage_pipeline );
 490
 491    imesa->enable_fastpath = driQueryOptionb(&imesa->optionCache,
 492                                             "enable_fastpath");
 493    /* DRM versions before 2.1.3 would only render triangle lists. ELTS
 494     * support was added in 2.2.0. */
 495    if (imesa->enable_fastpath && sPriv->drm_version.minor < 2) {
 496       fprintf (stderr,
 497                "*** Disabling fast path because your DRM version is buggy "
 498                "or doesn't\n*** support ELTS. You need at least Savage DRM "
 499                "version 2.2.\n");
 500       imesa->enable_fastpath = GL_FALSE;
 501    }
 502
 503    if (!savageScreen->bufs || savageScreen->chipset == S3_SUPERSAVAGE)
 504        imesa->enable_vdma = GL_FALSE;
 505    else
 506        imesa->enable_vdma = driQueryOptionb(&imesa->optionCache, "enable_vdma");
 507
 508    imesa->sync_frames = driQueryOptionb(&imesa->optionCache, "sync_frames");
 509
 510    /* Configure swrast to match hardware characteristics:
 511     */
 512    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 513    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 514    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 515    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 516
 517    ctx->DriverCtx = (void *) imesa;
 518    imesa->glCtx = ctx;
 519
 520 #ifndef SAVAGE_DEBUG
 521    SAVAGE_DEBUG = driParseDebugString( getenv( "SAVAGE_DEBUG" ),
 522                                        debug_control );
 523 #endif
 524
 525    driInitExtensions( ctx, card_extensions, GL_TRUE );
 526    if (savageScreen->chipset >= S3_SAVAGE4)
 527        driInitExtensions( ctx, s4_extensions, GL_FALSE );
 528    if (ctx->Mesa_DXTn ||
 529        driQueryOptionb (&imesa->optionCache, "force_s3tc_enable")) {
 530        _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 531        if (savageScreen->chipset >= S3_SAVAGE4)
 532            /* This extension needs DXT3 and DTX5 support in hardware.
 533             * Not available on Savage3D/MX/IX. */
 534            _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 535    }
 536
 537    savageDDInitStateFuncs( ctx );
 538    savageDDInitSpanFuncs( ctx );
 539    savageDDInitDriverFuncs( ctx );
 540    savageDDInitIoctlFuncs( ctx );
 541    savageInitTriFuncs( ctx );
 542
 543    savageDDInitState( imesa );
 544
 545    driContextPriv->driverPrivate = (void *) imesa;
 546
 547    return GL_TRUE;
 548 }
 549
 550 static void
 551 savageDestroyContext(__DRIcontext *driContextPriv)
 552 {
 553    savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 554    GLuint i;
 555
 556    assert (imesa); /* should never be NULL */
 557    if (imesa) {
 558       savageFlushVertices(imesa);
 559       savageReleaseIndexedVerts(imesa);
 560       savageFlushCmdBuf(imesa, GL_TRUE); /* release DMA buffer */
 561       WAIT_IDLE_EMPTY(imesa);
 562
 563       for (i = 0; i < imesa->lastTexHeap; i++)
 564          driDestroyTextureHeap(imesa->textureHeaps[i]);
 565
 566       free(imesa->cmdBuf.base);
 567       free(imesa->clientVtxBuf.buf);
 568
 569       _mesa_meta_free( imesa->glCtx );
 570
 571       _swsetup_DestroyContext(imesa->glCtx );
 572       _tnl_DestroyContext( imesa->glCtx );
 573       _vbo_DestroyContext( imesa->glCtx );
 574       _swrast_DestroyContext( imesa->glCtx );
 575
 576       /* free the Mesa context */
 577       imesa->glCtx->DriverCtx = NULL;
 578       _mesa_destroy_context(imesa->glCtx);
 579
 580       /* no longer use vertex_dma_buf*/
 581       free(imesa);
 582    }
 583 }
 584
 585
 586 static GLboolean
 587 savageCreateBuffer( __DRIscreen *driScrnPriv,
 588                     __DRIdrawable *driDrawPriv,
 589                     const struct gl_config *mesaVis,
 590                     GLboolean isPixmap)
 591 {
 592    savageScreenPrivate *screen = (savageScreenPrivate *) driScrnPriv->private;
 593
 594    if (isPixmap) {
 595       return GL_FALSE; /* not implemented */
 596    }
 597    else {
 598       GLboolean swStencil = mesaVis->stencilBits > 0 && mesaVis->depthBits != 24;
 599       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 600       /*
 601        * XXX: this value needs to be set according to the config file
 602        * setting.  But we don't get that until we create a rendering
 603        * context!!!!
 604        */
 605       GLboolean float_depth = GL_FALSE;
 606
 607       {
 608          driRenderbuffer *frontRb
 609             = driNewRenderbuffer(MESA_FORMAT_ARGB8888,
 610                                  (GLubyte *) screen->aperture.map
 611                                  + 0x01000000 * TARGET_FRONT,
 612                                  screen->cpp,
 613                                  screen->frontOffset, screen->aperturePitch,
 614                                  driDrawPriv);
 615          savageSetSpanFunctions(frontRb, mesaVis, float_depth);
 616          assert(frontRb->Base.Data);
 617          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 618       }
 619
 620       if (mesaVis->doubleBufferMode) {
 621          driRenderbuffer *backRb
 622             = driNewRenderbuffer(MESA_FORMAT_ARGB8888,
 623                                  (GLubyte *) screen->aperture.map
 624                                  + 0x01000000 * TARGET_BACK,
 625                                  screen->cpp,
 626                                  screen->backOffset, screen->aperturePitch,
 627                                  driDrawPriv);
 628          savageSetSpanFunctions(backRb, mesaVis, float_depth);
 629          assert(backRb->Base.Data);
 630          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 631       }
 632
 633       if (mesaVis->depthBits == 16) {
 634          driRenderbuffer *depthRb
 635             = driNewRenderbuffer(MESA_FORMAT_Z16,
 636                                  (GLubyte *) screen->aperture.map
 637                                  + 0x01000000 * TARGET_DEPTH,
 638                                  screen->zpp,
 639                                  screen->depthOffset, screen->aperturePitch,
 640                                  driDrawPriv);
 641          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 642          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 643       }
 644       else if (mesaVis->depthBits == 24) {
 645          driRenderbuffer *depthRb
 646             = driNewRenderbuffer(MESA_FORMAT_S8_Z24,
 647                                  (GLubyte *) screen->aperture.map
 648                                  + 0x01000000 * TARGET_DEPTH,
 649                                  screen->zpp,
 650                                  screen->depthOffset, screen->aperturePitch,
 651                                  driDrawPriv);
 652          savageSetSpanFunctions(depthRb, mesaVis, float_depth);
 653          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 654       }
 655
 656       if (mesaVis->stencilBits > 0 && !swStencil) {
 657          driRenderbuffer *stencilRb
 658             = driNewRenderbuffer(MESA_FORMAT_S8,
 659                                  (GLubyte *) screen->aperture.map
 660                                  + 0x01000000 * TARGET_DEPTH,
 661                                  screen->zpp,
 662                                  screen->depthOffset, screen->aperturePitch,
 663                                  driDrawPriv);
 664          savageSetSpanFunctions(stencilRb, mesaVis, float_depth);
 665          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 666       }
 667
 668       _mesa_add_soft_renderbuffers(fb,
 669                                    GL_FALSE, /* color */
 670                                    GL_FALSE, /* depth */
 671                                    swStencil,
 672                                    mesaVis->accumRedBits > 0,
 673                                    GL_FALSE, /* alpha */
 674                                    GL_FALSE /* aux */);
 675       driDrawPriv->driverPrivate = (void *) fb;
 676
 677       return (driDrawPriv->driverPrivate != NULL);
 678    }
 679 }
 680
 681 static void
 682 savageDestroyBuffer(__DRIdrawable *driDrawPriv)
 683 {
 684    _mesa_reference_framebuffer((struct gl_framebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 685 }
 686
 687 #if 0
 688 void XMesaSwapBuffers(__DRIdrawable *driDrawPriv)
 689 {
 690    /* XXX should do swap according to the buffer, not the context! */
 691    savageContextPtr imesa = savageCtx;
 692
 693    FLUSH_VB( imesa->glCtx, "swap buffers" );
 694    savageSwapBuffers(imesa);
 695 }
 696 #endif
 697
 698
 699 void savageXMesaSetClipRects(savageContextPtr imesa)
 700 {
 701    __DRIdrawable *dPriv = imesa->driDrawable;
 702
 703    if ((dPriv->numBackClipRects == 0)
 704        || (imesa->glCtx->DrawBuffer->_ColorDrawBufferIndexes[0] == BUFFER_FRONT_LEFT)) {
 705       imesa->numClipRects = dPriv->numClipRects;
 706       imesa->pClipRects = dPriv->pClipRects;
 707       imesa->drawX = dPriv->x;
 708       imesa->drawY = dPriv->y;
 709    } else {
 710       imesa->numClipRects = dPriv->numBackClipRects;
 711       imesa->pClipRects = dPriv->pBackClipRects;
 712       imesa->drawX = dPriv->backX;
 713       imesa->drawY = dPriv->backY;
 714    }
 715
 716    savageCalcViewport( imesa->glCtx );
 717 }
 718
 719
 720 static void savageXMesaWindowMoved( savageContextPtr imesa )
 721 {
 722    __DRIdrawable *const drawable = imesa->driDrawable;
 723    __DRIdrawable *const readable = imesa->driReadable;
 724
 725    if (0)
 726       fprintf(stderr, "savageXMesaWindowMoved\n\n");
 727
 728    savageXMesaSetClipRects(imesa);
 729
 730    driUpdateFramebufferSize(imesa->glCtx, drawable);
 731    if (drawable != readable) {
 732       driUpdateFramebufferSize(imesa->glCtx, readable);
 733    }
 734 }
 735
 736
 737 static GLboolean
 738 savageUnbindContext(__DRIcontext *driContextPriv)
 739 {
 740    savageContextPtr savage = (savageContextPtr) driContextPriv->driverPrivate;
 741    if (savage)
 742       savage->dirty = ~0;
 743
 744    return GL_TRUE;
 745 }
 746
 747 #if 0
 748 static GLboolean
 749 savageOpenFullScreen(__DRIcontext *driContextPriv)
 750 {
 751
 752
 753
 754     if (driContextPriv) {
 755       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 756       imesa->IsFullScreen = GL_TRUE;
 757       imesa->backup_frontOffset = imesa->savageScreen->frontOffset;
 758       imesa->backup_backOffset = imesa->savageScreen->backOffset;
 759       imesa->backup_frontBitmapDesc = imesa->savageScreen->frontBitmapDesc;
 760       imesa->savageScreen->frontBitmapDesc = imesa->savageScreen->backBitmapDesc;
 761       imesa->toggle = TARGET_BACK;
 762    }
 763
 764     return GL_TRUE;
 765 }
 766
 767 static GLboolean
 768 savageCloseFullScreen(__DRIcontext *driContextPriv)
 769 {
 770
 771     if (driContextPriv) {
 772       savageContextPtr imesa = (savageContextPtr) driContextPriv->driverPrivate;
 773       WAIT_IDLE_EMPTY(imesa);
 774       imesa->IsFullScreen = GL_FALSE;
 775       imesa->savageScreen->frontOffset = imesa->backup_frontOffset;
 776       imesa->savageScreen->backOffset = imesa->backup_backOffset;
 777       imesa->savageScreen->frontBitmapDesc = imesa->backup_frontBitmapDesc;
 778    }
 779     return GL_TRUE;
 780 }
 781 #endif
 782
 783 static GLboolean
 784 savageMakeCurrent(__DRIcontext *driContextPriv,
 785                   __DRIdrawable *driDrawPriv,
 786                   __DRIdrawable *driReadPriv)
 787 {
 788    if (driContextPriv) {
 789       savageContextPtr imesa
 790          = (savageContextPtr) driContextPriv->driverPrivate;
 791       struct gl_framebuffer *drawBuffer
 792          = (struct gl_framebuffer *) driDrawPriv->driverPrivate;
 793       struct gl_framebuffer *readBuffer
 794          = (struct gl_framebuffer *) driReadPriv->driverPrivate;
 795       driRenderbuffer *frontRb = (driRenderbuffer *)
 796          drawBuffer->Attachment[BUFFER_FRONT_LEFT].Renderbuffer;
 797       driRenderbuffer *backRb = (driRenderbuffer *)
 798          drawBuffer->Attachment[BUFFER_BACK_LEFT].Renderbuffer;
 799
 800       assert(frontRb->Base.Data);
 801       if (imesa->glCtx->Visual.doubleBufferMode) {
 802          assert(backRb->Base.Data);
 803       }
 804
 805       imesa->driReadable = driReadPriv;
 806       imesa->driDrawable = driDrawPriv;
 807       imesa->dirty = ~0;
 808
 809       _mesa_make_current(imesa->glCtx, drawBuffer, readBuffer);
 810
 811       savageXMesaWindowMoved( imesa );
 812    }
 813    else
 814    {
 815       _mesa_make_current(NULL, NULL, NULL);
 816    }
 817    return GL_TRUE;
 818 }
 819
 820
 821 void savageGetLock( savageContextPtr imesa, GLuint flags )
 822 {
 823    __DRIdrawable *const drawable = imesa->driDrawable;
 824    __DRIdrawable *const readable = imesa->driReadable;
 825    __DRIscreen *sPriv = imesa->driScreen;
 826    drm_savage_sarea_t *sarea = imesa->sarea;
 827    int me = imesa->hHWContext;
 828    int stamp = drawable->lastStamp;
 829    int heap;
 830    unsigned int timestamp = 0;
 831
 832
 833
 834    /* We know there has been contention.
 835     */
 836    drmGetLock(imesa->driFd, imesa->hHWContext, flags);
 837
 838
 839    /* Note contention for throttling hint
 840     */
 841    imesa->any_contend = 1;
 842
 843    /* If the window moved, may need to set a new cliprect now.
 844     *
 845     * NOTE: This releases and regains the hw lock, so all state
 846     * checking must be done *after* this call:
 847     */
 848    DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
 849    if (drawable != readable) {
 850       DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
 851    }
 852
 853
 854    /* If we lost context, need to dump all registers to hardware.
 855     * Note that we don't care about 2d contexts, even if they perform
 856     * accelerated commands, so the DRI locking in the X server is even
 857     * more broken than usual.
 858     */
 859    if (sarea->ctxOwner != me) {
 860       imesa->dirty |= (SAVAGE_UPLOAD_LOCAL |
 861                        SAVAGE_UPLOAD_GLOBAL |
 862                        SAVAGE_UPLOAD_FOGTBL |
 863                        SAVAGE_UPLOAD_TEX0 |
 864                        SAVAGE_UPLOAD_TEX1 |
 865                        SAVAGE_UPLOAD_TEXGLOBAL);
 866       imesa->lostContext = GL_TRUE;
 867       sarea->ctxOwner = me;
 868    }
 869
 870    for (heap = 0; heap < imesa->lastTexHeap; ++heap) {
 871       /* If a heap was changed, update its timestamp. Do this before
 872        * DRI_AGE_TEXTURES updates the local_age. */
 873       if (imesa->textureHeaps[heap] &&
 874           imesa->textureHeaps[heap]->global_age[0] >
 875           imesa->textureHeaps[heap]->local_age) {
 876          if (timestamp == 0)
 877             timestamp = savageEmitEventLocked(imesa, 0);
 878          imesa->textureHeaps[heap]->timestamp = timestamp;
 879       }
 880       DRI_AGE_TEXTURES( imesa->textureHeaps[heap] );
 881    }
 882
 883    if (drawable->lastStamp != stamp) {
 884       driUpdateFramebufferSize(imesa->glCtx, drawable);
 885       savageXMesaWindowMoved( imesa );
 886    }
 887 }
 888
 889 static const  __DRIconfig **
 890 savageFillInModes( __DRIscreen *psp,
 891                    unsigned pixel_bits, unsigned depth_bits,
 892                    unsigned stencil_bits, GLboolean have_back_buffer )
 893 {
 894     __DRIconfig **configs;
 895     struct gl_config * m;
 896     unsigned depth_buffer_factor;
 897     unsigned back_buffer_factor;
 898     GLenum fb_format;
 899     GLenum fb_type;
 900     int i;
 901
 902     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 903      * enough to add support.  Basically, if a context is created with an
 904      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 905      * will never be used.
 906      *
 907      * FK: What about drivers that don't use page flipping? Could they
 908      * just expose GLX_SWAP_COPY_OML?
 909      */
 910     static const GLenum back_buffer_modes[] = {
 911         GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
 912     };
 913
 914     uint8_t depth_bits_array[2];
 915     uint8_t stencil_bits_array[2];
 916     uint8_t msaa_samples_array[1];
 917
 918     depth_bits_array[0] = depth_bits;
 919     depth_bits_array[1] = depth_bits;
 920
 921     /* Just like with the accumulation buffer, always provide some modes
 922      * with a stencil buffer.  It will be a sw fallback, but some apps won't
 923      * care about that.
 924      */
 925     stencil_bits_array[0] = 0;
 926     stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 927
 928     msaa_samples_array[0] = 0;
 929
 930     depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
 931     back_buffer_factor  = (have_back_buffer) ? 2 : 1;
 932
 933     if ( pixel_bits == 16 ) {
 934         fb_format = GL_RGB;
 935         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 936     }
 937     else {
 938         fb_format = GL_BGR;
 939         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 940     }
 941
 942     configs = driCreateConfigs(fb_format, fb_type,
 943                                depth_bits_array, stencil_bits_array,
 944                                depth_buffer_factor,
 945                                back_buffer_modes, back_buffer_factor,
 946                                msaa_samples_array, 1, GL_TRUE);
 947     if (configs == NULL) {
 948         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 949                  __func__, __LINE__ );
 950         return NULL;
 951     }
 952
 953     /* Mark the visual as slow if there are "fake" stencil bits.
 954      */
 955     for (i = 0; configs[i]; i++) {
 956         m = &configs[i]->modes;
 957         if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 958             m->visualRating = GLX_SLOW_CONFIG;
 959         }
 960     }
 961
 962     return (const __DRIconfig **) configs;
 963 }
 964
 965
 966 /**
 967  * This is the driver specific part of the createNewScreen entry point.
 968  *
 969  * \todo maybe fold this into intelInitDriver
 970  *
 971  * \return the struct gl_config supported by this driver
 972  */
 973 static const __DRIconfig **
 974 savageInitScreen(__DRIscreen *psp)
 975 {
 976    static const __DRIversion ddx_expected = { 2, 0, 0 };
 977    static const __DRIversion dri_expected = { 4, 0, 0 };
 978    static const __DRIversion drm_expected = { 2, 1, 0 };
 979    SAVAGEDRIPtr dri_priv = (SAVAGEDRIPtr)psp->pDevPriv;
 980
 981    if ( ! driCheckDriDdxDrmVersions2( "Savage",
 982                                       &psp->dri_version, & dri_expected,
 983                                       &psp->ddx_version, & ddx_expected,
 984                                       &psp->drm_version, & drm_expected ) )
 985       return NULL;
 986
 987    if (!savageInitDriver(psp))
 988        return NULL;
 989
 990    return savageFillInModes( psp,
 991                              dri_priv->cpp*8,
 992                              (dri_priv->cpp == 2) ? 16 : 24,
 993                              (dri_priv->cpp == 2) ? 0  : 8,
 994                              (dri_priv->backOffset != dri_priv->depthOffset) );
 995 }
 996
 997 const struct __DriverAPIRec driDriverAPI = {
 998    savageInitScreen,
 999    savageDestroyScreen,
1000    savageCreateContext,
1001    savageDestroyContext,
1002    savageCreateBuffer,
1003    savageDestroyBuffer,
1004    savageSwapBuffers,
1005    savageMakeCurrent,
1006    savageUnbindContext
1007 };
1008
1009 /* This is the table of extensions that the loader will dlsym() for. */
1010 PUBLIC const __DRIextension *__driDriverExtensions[] = {
1011     &driCoreExtension.base,
1012     &driLegacyExtension.base,
1013     NULL
1014 };