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
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "vbo/vbo.h"
  40
  41 #include "tnl/tnl.h"
  42 #include "tnl/t_pipeline.h"
  43
  44 #include "drivers/common/driverfuncs.h"
  45
  46 #include "mach64_context.h"
  47 #include "mach64_ioctl.h"
  48 #include "mach64_dd.h"
  49 #include "mach64_span.h"
  50 #include "mach64_state.h"
  51 #include "mach64_tex.h"
  52 #include "mach64_tris.h"
  53 #include "mach64_vb.h"
  54
  55 #include "utils.h"
  56 #include "vblank.h"
  57
  58 #ifndef MACH64_DEBUG
  59 int MACH64_DEBUG = (0);
  60 #endif
  61
  62 static const struct dri_debug_control debug_control[] =
  63 {
  64     { "sync",   DEBUG_ALWAYS_SYNC },
  65     { "api",    DEBUG_VERBOSE_API },
  66     { "msg",    DEBUG_VERBOSE_MSG },
  67     { "lru",    DEBUG_VERBOSE_LRU },
  68     { "dri",    DEBUG_VERBOSE_DRI },
  69     { "ioctl",  DEBUG_VERBOSE_IOCTL },
  70     { "prims",  DEBUG_VERBOSE_PRIMS },
  71     { "count",  DEBUG_VERBOSE_COUNT },
  72     { "nowait", DEBUG_NOWAIT },
  73     { "fall",   DEBUG_VERBOSE_FALLBACK },
  74     { NULL,    0 }
  75 };
  76
  77 static const struct dri_extension card_extensions[] =
  78 {
  79     { "GL_ARB_multitexture",               NULL },
  80     { "GL_EXT_texture_edge_clamp",         NULL },
  81     { "GL_MESA_ycbcr_texture",             NULL },
  82     { NULL,                                NULL }
  83 };
  84
  85
  86 /* Create the device specific context.
  87   */
  88 GLboolean mach64CreateContext( gl_api api,
  89                                const struct gl_config *glVisual,
  90                                __DRIcontext *driContextPriv,
  91                                void *sharedContextPrivate )
  92 {
  93    struct gl_context *ctx, *shareCtx;
  94    __DRIscreen *driScreen = driContextPriv->driScreenPriv;
  95    struct dd_function_table functions;
  96    mach64ContextPtr mmesa;
  97    mach64ScreenPtr mach64Screen;
  98    int i, heap;
  99    GLuint *c_textureSwapsPtr = NULL;
 100
 101 #if DO_DEBUG
 102    MACH64_DEBUG = driParseDebugString(getenv("MACH64_DEBUG"), debug_control);
 103 #endif
 104
 105    /* Allocate the mach64 context */
 106    mmesa = (mach64ContextPtr) CALLOC( sizeof(*mmesa) );
 107    if ( !mmesa )
 108       return GL_FALSE;
 109
 110    /* Init default driver functions then plug in our Mach64-specific functions
 111     * (the texture functions are especially important)
 112     */
 113    _mesa_init_driver_functions( &functions );
 114    mach64InitDriverFuncs( &functions );
 115    mach64InitIoctlFuncs( &functions );
 116    mach64InitTextureFuncs( &functions );
 117
 118    /* Allocate the Mesa context */
 119    if (sharedContextPrivate)
 120       shareCtx = ((mach64ContextPtr) sharedContextPrivate)->glCtx;
 121    else
 122       shareCtx = NULL;
 123    mmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 124                                         &functions, (void *)mmesa);
 125    if (!mmesa->glCtx) {
 126       FREE(mmesa);
 127       return GL_FALSE;
 128    }
 129    driContextPriv->driverPrivate = mmesa;
 130    ctx = mmesa->glCtx;
 131
 132    mmesa->driContext = driContextPriv;
 133    mmesa->driScreen = driScreen;
 134    mmesa->driDrawable = NULL;
 135    mmesa->hHWContext = driContextPriv->hHWContext;
 136    mmesa->driHwLock = &driScreen->pSAREA->lock;
 137    mmesa->driFd = driScreen->fd;
 138
 139    mach64Screen = mmesa->mach64Screen = (mach64ScreenPtr)driScreen->private;
 140
 141    /* Parse configuration files */
 142    driParseConfigFiles (&mmesa->optionCache, &mach64Screen->optionCache,
 143                         mach64Screen->driScreen->myNum, "mach64");
 144
 145    mmesa->sarea = (drm_mach64_sarea_t *)((char *)driScreen->pSAREA +
 146                                     sizeof(drm_sarea_t));
 147
 148    mmesa->CurrentTexObj[0] = NULL;
 149    mmesa->CurrentTexObj[1] = NULL;
 150
 151    (void) memset( mmesa->texture_heaps, 0, sizeof( mmesa->texture_heaps ) );
 152    make_empty_list( &mmesa->swapped );
 153
 154    mmesa->firstTexHeap = mach64Screen->firstTexHeap;
 155    mmesa->lastTexHeap = mach64Screen->firstTexHeap + mach64Screen->numTexHeaps;
 156
 157    for ( i = mmesa->firstTexHeap ; i < mmesa->lastTexHeap ; i++ ) {
 158       mmesa->texture_heaps[i] = driCreateTextureHeap( i, mmesa,
 159             mach64Screen->texSize[i],
 160             6, /* align to 64-byte boundary, use 12 for page-size boundary */
 161             MACH64_NR_TEX_REGIONS,
 162             (drmTextureRegionPtr)mmesa->sarea->tex_list[i],
 163             &mmesa->sarea->tex_age[i],
 164             &mmesa->swapped,
 165             sizeof( mach64TexObj ),
 166             (destroy_texture_object_t *) mach64DestroyTexObj );
 167
 168 #if ENABLE_PERF_BOXES
 169       c_textureSwapsPtr = & mmesa->c_textureSwaps;
 170 #endif
 171       driSetTextureSwapCounterLocation( mmesa->texture_heaps[i],
 172                                         c_textureSwapsPtr );
 173    }
 174
 175    mmesa->RenderIndex = -1;             /* Impossible value */
 176    mmesa->vert_buf = NULL;
 177    mmesa->num_verts = 0;
 178    mmesa->new_state = MACH64_NEW_ALL;
 179    mmesa->dirty = MACH64_UPLOAD_ALL;
 180
 181    /* Set the maximum texture size small enough that we can
 182     * guarentee that both texture units can bind a maximal texture
 183     * and have them both in memory (on-card or AGP) at once.
 184     * Test for 2 textures * bytes/texel * size * size.  There's no
 185     * need to account for mipmaps since we only upload one level.
 186     */
 187
 188    ctx->Const.MaxTextureUnits = 2;
 189    ctx->Const.MaxTextureImageUnits = 2;
 190    ctx->Const.MaxTextureCoordUnits = 2;
 191    ctx->Const.MaxDrawBuffers = 1;
 192
 193    heap = mach64Screen->IsPCI ? MACH64_CARD_HEAP : MACH64_AGP_HEAP;
 194
 195    driCalculateMaxTextureLevels( & mmesa->texture_heaps[heap],
 196                                  1,
 197                                  & ctx->Const,
 198                                  mach64Screen->cpp,
 199                                  10, /* max 2D texture size is 1024x1024 */
 200                                  0,  /* 3D textures unsupported. */
 201                                  0,  /* cube textures unsupported. */
 202                                  0,  /* texture rectangles unsupported. */
 203                                  1,  /* mipmapping unsupported. */
 204                                  GL_TRUE, /* need to have both textures in
 205                                              either local or AGP memory */
 206                                  0 );
 207
 208 #if ENABLE_PERF_BOXES
 209    mmesa->boxes = ( getenv( "LIBGL_PERFORMANCE_BOXES" ) != NULL );
 210 #endif
 211
 212    /* Allocate the vertex buffer
 213     */
 214    mmesa->vert_buf = _mesa_align_malloc(MACH64_BUFFER_SIZE, 32);
 215    if ( !mmesa->vert_buf )
 216       return GL_FALSE;
 217    mmesa->vert_used = 0;
 218    mmesa->vert_total = MACH64_BUFFER_SIZE;
 219
 220    /* Initialize the software rasterizer and helper modules.
 221     */
 222    _swrast_CreateContext( ctx );
 223    _vbo_CreateContext( ctx );
 224    _tnl_CreateContext( ctx );
 225    _swsetup_CreateContext( ctx );
 226
 227    /* Install the customized pipeline:
 228     */
 229 /*     _tnl_destroy_pipeline( ctx ); */
 230 /*     _tnl_install_pipeline( ctx, mach64_pipeline ); */
 231
 232    /* Configure swrast and T&L to match hardware characteristics:
 233     */
 234    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 235    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 236    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 237    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 238
 239    driInitExtensions( ctx, card_extensions, GL_TRUE );
 240
 241    mach64InitVB( ctx );
 242    mach64InitTriFuncs( ctx );
 243    mach64DDInitStateFuncs( ctx );
 244    mach64DDInitSpanFuncs( ctx );
 245    mach64DDInitState( mmesa );
 246
 247    mmesa->do_irqs = (mmesa->mach64Screen->irq && !getenv("MACH64_NO_IRQS"));
 248
 249    driContextPriv->driverPrivate = (void *)mmesa;
 250
 251    if (driQueryOptionb(&mmesa->optionCache, "no_rast")) {
 252       fprintf(stderr, "disabling 3D acceleration\n");
 253       FALLBACK(mmesa, MACH64_FALLBACK_DISABLE, 1);
 254    }
 255
 256    return GL_TRUE;
 257 }
 258
 259 /* Destroy the device specific context.
 260  */
 261 void mach64DestroyContext( __DRIcontext *driContextPriv  )
 262 {
 263    mach64ContextPtr mmesa = (mach64ContextPtr) driContextPriv->driverPrivate;
 264
 265    assert(mmesa);  /* should never be null */
 266    if ( mmesa ) {
 267       GLboolean   release_texture_heaps;
 268
 269       release_texture_heaps = (mmesa->glCtx->Shared->RefCount == 1);
 270
 271       _swsetup_DestroyContext( mmesa->glCtx );
 272       _tnl_DestroyContext( mmesa->glCtx );
 273       _vbo_DestroyContext( mmesa->glCtx );
 274       _swrast_DestroyContext( mmesa->glCtx );
 275
 276       if (release_texture_heaps) {
 277          /* This share group is about to go away, free our private
 278           * texture object data.
 279           */
 280          int i;
 281
 282          for ( i = mmesa->firstTexHeap ; i < mmesa->lastTexHeap ; i++ ) {
 283             driDestroyTextureHeap( mmesa->texture_heaps[i] );
 284             mmesa->texture_heaps[i] = NULL;
 285          }
 286
 287          assert( is_empty_list( & mmesa->swapped ) );
 288       }
 289
 290       mach64FreeVB( mmesa->glCtx );
 291
 292       /* Free the vertex buffer */
 293       if ( mmesa->vert_buf )
 294          _mesa_align_free( mmesa->vert_buf );
 295
 296       /* free the Mesa context */
 297       mmesa->glCtx->DriverCtx = NULL;
 298       _mesa_destroy_context(mmesa->glCtx);
 299
 300       FREE( mmesa );
 301    }
 302 }
 303
 304 /* Force the context `c' to be the current context and associate with it
 305  * buffer `b'.
 306  */
 307 GLboolean
 308 mach64MakeCurrent( __DRIcontext *driContextPriv,
 309                  __DRIdrawable *driDrawPriv,
 310                  __DRIdrawable *driReadPriv )
 311 {
 312    if ( driContextPriv ) {
 313       GET_CURRENT_CONTEXT(ctx);
 314       mach64ContextPtr oldMach64Ctx = ctx ? MACH64_CONTEXT(ctx) : NULL;
 315       mach64ContextPtr newMach64Ctx = (mach64ContextPtr) driContextPriv->driverPrivate;
 316
 317       if ( newMach64Ctx != oldMach64Ctx ) {
 318          newMach64Ctx->new_state |= MACH64_NEW_CONTEXT;
 319          newMach64Ctx->dirty = MACH64_UPLOAD_ALL;
 320       }
 321
 322
 323       if ( newMach64Ctx->driDrawable != driDrawPriv ) {
 324          if (driDrawPriv->swap_interval == (unsigned)-1) {
 325             driDrawPriv->vblFlags = (newMach64Ctx->do_irqs)
 326                ? driGetDefaultVBlankFlags(&newMach64Ctx->optionCache)
 327                : VBLANK_FLAG_NO_IRQ;
 328
 329             driDrawableInitVBlank( driDrawPriv );
 330          }
 331
 332          newMach64Ctx->driDrawable = driDrawPriv;
 333          mach64CalcViewport( newMach64Ctx->glCtx );
 334       }
 335
 336       _mesa_make_current( newMach64Ctx->glCtx,
 337                           (struct gl_framebuffer *) driDrawPriv->driverPrivate,
 338                           (struct gl_framebuffer *) driReadPriv->driverPrivate );
 339
 340
 341       newMach64Ctx->new_state |=  MACH64_NEW_CLIP;
 342    } else {
 343       _mesa_make_current( NULL, NULL, NULL );
 344    }
 345
 346    return GL_TRUE;
 347 }
 348
 349
 350 /* Force the context `c' to be unbound from its buffer.
 351  */
 352 GLboolean
 353 mach64UnbindContext( __DRIcontext *driContextPriv )
 354 {
 355    return GL_TRUE;
 356 }