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