src/mesa/drivers/dri/mach64/mach64_context.c

   1 /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      Jos�Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #include "main/glheader.h"
  33 #include "main/context.h"
  34 #include "main/simple_list.h"
  35 #include "main/imports.h"
  36 #include "main/matrix.h"
  37 #include "main/extensions.h"
  38
  39 #include "swrast/swrast.h"
  40 #include "swrast_setup/swrast_setup.h"
  41 #include "vbo/vbo.h"
  42
  43 #include "tnl/tnl.h"
  44 #include "tnl/t_pipeline.h"
  45
  46 #include "drivers/common/driverfuncs.h"
  47
  48 #include "mach64_context.h"
  49 #include "mach64_ioctl.h"
  50 #include "mach64_dd.h"
  51 #include "mach64_span.h"
  52 #include "mach64_state.h"
  53 #include "mach64_tex.h"
  54 #include "mach64_tris.h"
  55 #include "mach64_vb.h"
  56
  57 #include "utils.h"
  58 #include "vblank.h"
  59
  60 #ifndef MACH64_DEBUG
  61 int MACH64_DEBUG = (0);
  62 #endif
  63
  64 static const struct dri_debug_control debug_control[] =
  65 {
  66     { "sync",   DEBUG_ALWAYS_SYNC },
  67     { "api",    DEBUG_VERBOSE_API },
  68     { "msg",    DEBUG_VERBOSE_MSG },
  69     { "lru",    DEBUG_VERBOSE_LRU },
  70     { "dri",    DEBUG_VERBOSE_DRI },
  71     { "ioctl",  DEBUG_VERBOSE_IOCTL },
  72     { "prims",  DEBUG_VERBOSE_PRIMS },
  73     { "count",  DEBUG_VERBOSE_COUNT },
  74     { "nowait", DEBUG_NOWAIT },
  75     { "fall",   DEBUG_VERBOSE_FALLBACK },
  76     { NULL,    0 }
  77 };
  78
  79 static const struct dri_extension card_extensions[] =
  80 {
  81     { "GL_ARB_multitexture",               NULL },
  82     { "GL_EXT_texture_edge_clamp",         NULL },
  83     { "GL_MESA_ycbcr_texture",             NULL },
  84     { "GL_SGIS_generate_mipmap",           NULL },
  85     { NULL,                                NULL }
  86 };
  87
  88
  89 /* Create the device specific context.
  90   */
  91 GLboolean mach64CreateContext( const __GLcontextModes *glVisual,
  92                                __DRIcontextPrivate *driContextPriv,
  93                                void *sharedContextPrivate )
  94 {
  95    GLcontext *ctx, *shareCtx;
  96    __DRIscreenPrivate *driScreen = driContextPriv->driScreenPriv;
  97    struct dd_function_table functions;
  98    mach64ContextPtr mmesa;
  99    mach64ScreenPtr mach64Screen;
 100    int i, heap;
 101    GLuint *c_textureSwapsPtr = NULL;
 102
 103 #if DO_DEBUG
 104    MACH64_DEBUG = driParseDebugString(getenv("MACH64_DEBUG"), debug_control);
 105 #endif
 106
 107    /* Allocate the mach64 context */
 108    mmesa = (mach64ContextPtr) CALLOC( sizeof(*mmesa) );
 109    if ( !mmesa )
 110       return GL_FALSE;
 111
 112    /* Init default driver functions then plug in our Mach64-specific functions
 113     * (the texture functions are especially important)
 114     */
 115    _mesa_init_driver_functions( &functions );
 116    mach64InitDriverFuncs( &functions );
 117    mach64InitIoctlFuncs( &functions );
 118    mach64InitTextureFuncs( &functions );
 119
 120    /* Allocate the Mesa context */
 121    if (sharedContextPrivate)
 122       shareCtx = ((mach64ContextPtr) sharedContextPrivate)->glCtx;
 123    else
 124       shareCtx = NULL;
 125    mmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 126                                         &functions, (void *)mmesa);
 127    if (!mmesa->glCtx) {
 128       FREE(mmesa);
 129       return GL_FALSE;
 130    }
 131    driContextPriv->driverPrivate = mmesa;
 132    ctx = mmesa->glCtx;
 133
 134    mmesa->driContext = driContextPriv;
 135    mmesa->driScreen = driScreen;
 136    mmesa->driDrawable = NULL;
 137    mmesa->hHWContext = driContextPriv->hHWContext;
 138    mmesa->driHwLock = &driScreen->pSAREA->lock;
 139    mmesa->driFd = driScreen->fd;
 140
 141    mach64Screen = mmesa->mach64Screen = (mach64ScreenPtr)driScreen->private;
 142
 143    /* Parse configuration files */
 144    driParseConfigFiles (&mmesa->optionCache, &mach64Screen->optionCache,
 145                         mach64Screen->driScreen->myNum, "mach64");
 146
 147    mmesa->sarea = (drm_mach64_sarea_t *)((char *)driScreen->pSAREA +
 148                                     sizeof(drm_sarea_t));
 149
 150    mmesa->CurrentTexObj[0] = NULL;
 151    mmesa->CurrentTexObj[1] = NULL;
 152
 153    (void) memset( mmesa->texture_heaps, 0, sizeof( mmesa->texture_heaps ) );
 154    make_empty_list( &mmesa->swapped );
 155
 156    mmesa->firstTexHeap = mach64Screen->firstTexHeap;
 157    mmesa->lastTexHeap = mach64Screen->firstTexHeap + mach64Screen->numTexHeaps;
 158
 159    for ( i = mmesa->firstTexHeap ; i < mmesa->lastTexHeap ; i++ ) {
 160       mmesa->texture_heaps[i] = driCreateTextureHeap( i, mmesa,
 161             mach64Screen->texSize[i],
 162             6, /* align to 64-byte boundary, use 12 for page-size boundary */
 163             MACH64_NR_TEX_REGIONS,
 164             (drmTextureRegionPtr)mmesa->sarea->tex_list[i],
 165             &mmesa->sarea->tex_age[i],
 166             &mmesa->swapped,
 167             sizeof( mach64TexObj ),
 168             (destroy_texture_object_t *) mach64DestroyTexObj );
 169
 170 #if ENABLE_PERF_BOXES
 171       c_textureSwapsPtr = & mmesa->c_textureSwaps;
 172 #endif
 173       driSetTextureSwapCounterLocation( mmesa->texture_heaps[i],
 174                                         c_textureSwapsPtr );
 175    }
 176
 177    mmesa->RenderIndex = -1;             /* Impossible value */
 178    mmesa->vert_buf = NULL;
 179    mmesa->num_verts = 0;
 180    mmesa->new_state = MACH64_NEW_ALL;
 181    mmesa->dirty = MACH64_UPLOAD_ALL;
 182
 183    /* Set the maximum texture size small enough that we can
 184     * guarentee that both texture units can bind a maximal texture
 185     * and have them both in memory (on-card or AGP) at once.
 186     * Test for 2 textures * bytes/texel * size * size.  There's no
 187     * need to account for mipmaps since we only upload one level.
 188     */
 189
 190    ctx->Const.MaxTextureUnits = 2;
 191    ctx->Const.MaxTextureImageUnits = 2;
 192    ctx->Const.MaxTextureCoordUnits = 2;
 193    ctx->Const.MaxDrawBuffers = 1;
 194
 195    heap = mach64Screen->IsPCI ? MACH64_CARD_HEAP : MACH64_AGP_HEAP;
 196
 197    driCalculateMaxTextureLevels( & mmesa->texture_heaps[heap],
 198                                  1,
 199                                  & ctx->Const,
 200                                  mach64Screen->cpp,
 201                                  10, /* max 2D texture size is 1024x1024 */
 202                                  0,  /* 3D textures unsupported. */
 203                                  0,  /* cube textures unsupported. */
 204                                  0,  /* texture rectangles unsupported. */
 205                                  1,  /* mipmapping unsupported. */
 206                                  GL_TRUE, /* need to have both textures in
 207                                              either local or AGP memory */
 208                                  0 );
 209
 210 #if ENABLE_PERF_BOXES
 211    mmesa->boxes = ( getenv( "LIBGL_PERFORMANCE_BOXES" ) != NULL );
 212 #endif
 213
 214    /* Allocate the vertex buffer
 215     */
 216    mmesa->vert_buf = ALIGN_MALLOC(MACH64_BUFFER_SIZE, 32);
 217    if ( !mmesa->vert_buf )
 218       return GL_FALSE;
 219    mmesa->vert_used = 0;
 220    mmesa->vert_total = MACH64_BUFFER_SIZE;
 221
 222    /* Initialize the software rasterizer and helper modules.
 223     */
 224    _swrast_CreateContext( ctx );
 225    _vbo_CreateContext( ctx );
 226    _tnl_CreateContext( ctx );
 227    _swsetup_CreateContext( ctx );
 228
 229    /* Install the customized pipeline:
 230     */
 231 /*     _tnl_destroy_pipeline( ctx ); */
 232 /*     _tnl_install_pipeline( ctx, mach64_pipeline ); */
 233
 234    /* Configure swrast and T&L to match hardware characteristics:
 235     */
 236    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 237    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 238    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 239    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 240
 241    driInitExtensions( ctx, card_extensions, GL_TRUE );
 242
 243    mach64InitVB( ctx );
 244    mach64InitTriFuncs( ctx );
 245    mach64DDInitStateFuncs( ctx );
 246    mach64DDInitSpanFuncs( ctx );
 247    mach64DDInitState( mmesa );
 248
 249    mmesa->do_irqs = (mmesa->mach64Screen->irq && !getenv("MACH64_NO_IRQS"));
 250
 251    driContextPriv->driverPrivate = (void *)mmesa;
 252
 253    if (driQueryOptionb(&mmesa->optionCache, "no_rast")) {
 254       fprintf(stderr, "disabling 3D acceleration\n");
 255       FALLBACK(mmesa, MACH64_FALLBACK_DISABLE, 1);
 256    }
 257
 258    return GL_TRUE;
 259 }
 260
 261 /* Destroy the device specific context.
 262  */
 263 void mach64DestroyContext( __DRIcontextPrivate *driContextPriv  )
 264 {
 265    mach64ContextPtr mmesa = (mach64ContextPtr) driContextPriv->driverPrivate;
 266
 267    assert(mmesa);  /* should never be null */
 268    if ( mmesa ) {
 269       GLboolean   release_texture_heaps;
 270
 271       release_texture_heaps = (mmesa->glCtx->Shared->RefCount == 1);
 272
 273       _swsetup_DestroyContext( mmesa->glCtx );
 274       _tnl_DestroyContext( mmesa->glCtx );
 275       _vbo_DestroyContext( mmesa->glCtx );
 276       _swrast_DestroyContext( mmesa->glCtx );
 277
 278       if (release_texture_heaps) {
 279          /* This share group is about to go away, free our private
 280           * texture object data.
 281           */
 282          int i;
 283
 284          for ( i = mmesa->firstTexHeap ; i < mmesa->lastTexHeap ; i++ ) {
 285             driDestroyTextureHeap( mmesa->texture_heaps[i] );
 286             mmesa->texture_heaps[i] = NULL;
 287          }
 288
 289          assert( is_empty_list( & mmesa->swapped ) );
 290       }
 291
 292       mach64FreeVB( mmesa->glCtx );
 293
 294       /* Free the vertex buffer */
 295       if ( mmesa->vert_buf )
 296          ALIGN_FREE( mmesa->vert_buf );
 297
 298       /* free the Mesa context */
 299       mmesa->glCtx->DriverCtx = NULL;
 300       _mesa_destroy_context(mmesa->glCtx);
 301
 302       FREE( mmesa );
 303    }
 304 }
 305
 306 /* Force the context `c' to be the current context and associate with it
 307  * buffer `b'.
 308  */
 309 GLboolean
 310 mach64MakeCurrent( __DRIcontextPrivate *driContextPriv,
 311                  __DRIdrawablePrivate *driDrawPriv,
 312                  __DRIdrawablePrivate *driReadPriv )
 313 {
 314    if ( driContextPriv ) {
 315       GET_CURRENT_CONTEXT(ctx);
 316       mach64ContextPtr oldMach64Ctx = ctx ? MACH64_CONTEXT(ctx) : NULL;
 317       mach64ContextPtr newMach64Ctx = (mach64ContextPtr) driContextPriv->driverPrivate;
 318
 319       if ( newMach64Ctx != oldMach64Ctx ) {
 320          newMach64Ctx->new_state |= MACH64_NEW_CONTEXT;
 321          newMach64Ctx->dirty = MACH64_UPLOAD_ALL;
 322       }
 323
 324
 325       if ( newMach64Ctx->driDrawable != driDrawPriv ) {
 326          if (driDrawPriv->swap_interval == (unsigned)-1) {
 327             driDrawPriv->vblFlags = (newMach64Ctx->do_irqs)
 328                ? driGetDefaultVBlankFlags(&newMach64Ctx->optionCache)
 329                : VBLANK_FLAG_NO_IRQ;
 330
 331             driDrawableInitVBlank( driDrawPriv );
 332          }
 333
 334          newMach64Ctx->driDrawable = driDrawPriv;
 335          mach64CalcViewport( newMach64Ctx->glCtx );
 336       }
 337
 338       _mesa_make_current( newMach64Ctx->glCtx,
 339                           (GLframebuffer *) driDrawPriv->driverPrivate,
 340                           (GLframebuffer *) driReadPriv->driverPrivate );
 341
 342
 343       newMach64Ctx->new_state |=  MACH64_NEW_CLIP;
 344    } else {
 345       _mesa_make_current( NULL, NULL, NULL );
 346    }
 347
 348    return GL_TRUE;
 349 }
 350
 351
 352 /* Force the context `c' to be unbound from its buffer.
 353  */
 354 GLboolean
 355 mach64UnbindContext( __DRIcontextPrivate *driContextPriv )
 356 {
 357    return GL_TRUE;
 358 }