src/mesa/drivers/dri/intel/intel_context.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   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
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/matrix.h"
  32 #include "main/simple_list.h"
  33 #include "main/extensions.h"
  34 #include "main/framebuffer.h"
  35 #include "main/imports.h"
  36 #include "main/points.h"
  37
  38 #include "swrast/swrast.h"
  39 #include "swrast_setup/swrast_setup.h"
  40 #include "tnl/tnl.h"
  41
  42 #include "tnl/t_pipeline.h"
  43 #include "tnl/t_vertex.h"
  44
  45 #include "drivers/common/driverfuncs.h"
  46
  47 #include "intel_screen.h"
  48
  49 #include "i830_dri.h"
  50
  51 #include "intel_chipset.h"
  52 #include "intel_buffers.h"
  53 #include "intel_tex.h"
  54 #include "intel_batchbuffer.h"
  55 #include "intel_blit.h"
  56 #include "intel_pixel.h"
  57 #include "intel_regions.h"
  58 #include "intel_buffer_objects.h"
  59 #include "intel_fbo.h"
  60 #include "intel_decode.h"
  61 #include "intel_bufmgr.h"
  62
  63 #include "drirenderbuffer.h"
  64 #include "vblank.h"
  65 #include "utils.h"
  66 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  67 #ifndef INTEL_DEBUG
  68 int INTEL_DEBUG = (0);
  69 #endif
  70
  71 #define need_GL_ARB_multisample
  72 #define need_GL_ARB_occlusion_query
  73 #define need_GL_ARB_point_parameters
  74 #define need_GL_ARB_shader_objects
  75 #define need_GL_ARB_texture_compression
  76 #define need_GL_ARB_vertex_buffer_object
  77 #define need_GL_ARB_vertex_program
  78 #define need_GL_ARB_vertex_shader
  79 #define need_GL_ARB_window_pos
  80 #define need_GL_EXT_blend_color
  81 #define need_GL_EXT_blend_equation_separate
  82 #define need_GL_EXT_blend_func_separate
  83 #define need_GL_EXT_blend_minmax
  84 #define need_GL_EXT_cull_vertex
  85 #define need_GL_EXT_fog_coord
  86 #define need_GL_EXT_framebuffer_object
  87 #define need_GL_EXT_multi_draw_arrays
  88 #define need_GL_EXT_point_parameters
  89 #define need_GL_EXT_secondary_color
  90 #define need_GL_ATI_separate_stencil
  91 #define need_GL_NV_point_sprite
  92 #define need_GL_NV_vertex_program
  93 #define need_GL_VERSION_2_0
  94 #define need_GL_VERSION_2_1
  95
  96 #include "extension_helper.h"
  97
  98 #define DRIVER_DATE                     "20080716"
  99 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
 100
 101 static const GLubyte *
 102 intelGetString(GLcontext * ctx, GLenum name)
 103 {
 104    const struct intel_context *const intel = intel_context(ctx);
 105    const char *chipset;
 106    static char buffer[128];
 107
 108    switch (name) {
 109    case GL_VENDOR:
 110       return (GLubyte *) "Tungsten Graphics, Inc";
 111       break;
 112
 113    case GL_RENDERER:
 114       switch (intel->intelScreen->deviceID) {
 115       case PCI_CHIP_845_G:
 116          chipset = "Intel(R) 845G";
 117          break;
 118       case PCI_CHIP_I830_M:
 119          chipset = "Intel(R) 830M";
 120          break;
 121       case PCI_CHIP_I855_GM:
 122          chipset = "Intel(R) 852GM/855GM";
 123          break;
 124       case PCI_CHIP_I865_G:
 125          chipset = "Intel(R) 865G";
 126          break;
 127       case PCI_CHIP_I915_G:
 128          chipset = "Intel(R) 915G";
 129          break;
 130       case PCI_CHIP_E7221_G:
 131          chipset = "Intel (R) E7221G (i915)";
 132          break;
 133       case PCI_CHIP_I915_GM:
 134          chipset = "Intel(R) 915GM";
 135          break;
 136       case PCI_CHIP_I945_G:
 137          chipset = "Intel(R) 945G";
 138          break;
 139       case PCI_CHIP_I945_GM:
 140          chipset = "Intel(R) 945GM";
 141          break;
 142       case PCI_CHIP_I945_GME:
 143          chipset = "Intel(R) 945GME";
 144          break;
 145       case PCI_CHIP_G33_G:
 146          chipset = "Intel(R) G33";
 147          break;
 148       case PCI_CHIP_Q35_G:
 149          chipset = "Intel(R) Q35";
 150          break;
 151       case PCI_CHIP_Q33_G:
 152          chipset = "Intel(R) Q33";
 153          break;
 154       case PCI_CHIP_I965_Q:
 155          chipset = "Intel(R) 965Q";
 156          break;
 157       case PCI_CHIP_I965_G:
 158       case PCI_CHIP_I965_G_1:
 159          chipset = "Intel(R) 965G";
 160          break;
 161       case PCI_CHIP_I946_GZ:
 162          chipset = "Intel(R) 946GZ";
 163          break;
 164       case PCI_CHIP_I965_GM:
 165          chipset = "Intel(R) 965GM";
 166          break;
 167       case PCI_CHIP_I965_GME:
 168          chipset = "Intel(R) 965GME/GLE";
 169          break;
 170       case PCI_CHIP_GM45_GM:
 171          chipset = "Mobile Intel® GM45 Express Chipset";
 172          break;
 173       case PCI_CHIP_IGD_E_G:
 174          chipset = "Intel(R) Integrated Graphics Device";
 175          break;
 176       case PCI_CHIP_G45_G:
 177          chipset = "Intel(R) G45/G43";
 178          break;
 179       case PCI_CHIP_Q45_G:
 180          chipset = "Intel(R) Q45/Q43";
 181          break;
 182       case PCI_CHIP_G41_G:
 183          chipset = "Intel(R) G41";
 184          break;
 185       default:
 186          chipset = "Unknown Intel Chipset";
 187          break;
 188       }
 189
 190       (void) driGetRendererString(buffer, chipset,
 191                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 192                                   0);
 193       return (GLubyte *) buffer;
 194
 195    default:
 196       return NULL;
 197    }
 198 }
 199
 200 void
 201 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 202 {
 203    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 204    struct intel_renderbuffer *rb;
 205    struct intel_region *region, *depth_region;
 206    struct intel_context *intel = context->driverPrivate;
 207    __DRIbuffer *buffers;
 208    __DRIscreen *screen;
 209    int i, count;
 210    unsigned int attachments[10];
 211    uint32_t name;
 212    const char *region_name;
 213
 214    if (INTEL_DEBUG & DEBUG_DRI)
 215       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 216
 217    screen = intel->intelScreen->driScrnPriv;
 218
 219    i = 0;
 220    if (intel_fb->color_rb[0])
 221       attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 222    if (intel_fb->color_rb[1])
 223       attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 224    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 225       attachments[i++] = __DRI_BUFFER_DEPTH;
 226    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 227       attachments[i++] = __DRI_BUFFER_STENCIL;
 228
 229    buffers = (*screen->dri2.loader->getBuffers)(drawable,
 230                                                 &drawable->w,
 231                                                 &drawable->h,
 232                                                 attachments, i,
 233                                                 &count,
 234                                                 drawable->loaderPrivate);
 235
 236    if (buffers == NULL)
 237       return;
 238
 239    drawable->x = 0;
 240    drawable->y = 0;
 241    drawable->backX = 0;
 242    drawable->backY = 0;
 243    drawable->numClipRects = 1;
 244    drawable->pClipRects[0].x1 = 0;
 245    drawable->pClipRects[0].y1 = 0;
 246    drawable->pClipRects[0].x2 = drawable->w;
 247    drawable->pClipRects[0].y2 = drawable->h;
 248    drawable->numBackClipRects = 1;
 249    drawable->pBackClipRects[0].x1 = 0;
 250    drawable->pBackClipRects[0].y1 = 0;
 251    drawable->pBackClipRects[0].x2 = drawable->w;
 252    drawable->pBackClipRects[0].y2 = drawable->h;
 253
 254    depth_region = NULL;
 255    for (i = 0; i < count; i++) {
 256        switch (buffers[i].attachment) {
 257        case __DRI_BUFFER_FRONT_LEFT:
 258            rb = intel_fb->color_rb[0];
 259            region_name = "dri2 front buffer";
 260            break;
 261
 262        case __DRI_BUFFER_BACK_LEFT:
 263            rb = intel_fb->color_rb[1];
 264            region_name = "dri2 back buffer";
 265            break;
 266
 267        case __DRI_BUFFER_DEPTH:
 268            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 269            region_name = "dri2 depth buffer";
 270            break;
 271
 272        case __DRI_BUFFER_STENCIL:
 273            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 274            region_name = "dri2 stencil buffer";
 275            break;
 276
 277        case __DRI_BUFFER_ACCUM:
 278        default:
 279            fprintf(stderr,
 280                    "unhandled buffer attach event, attacment type %d\n",
 281                    buffers[i].attachment);
 282            return;
 283        }
 284
 285        if (rb->region) {
 286           dri_bo_flink(rb->region->buffer, &name);
 287           if (name == buffers[i].name)
 288              continue;
 289        }
 290
 291        if (INTEL_DEBUG & DEBUG_DRI)
 292           fprintf(stderr,
 293                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 294                   buffers[i].name, buffers[i].attachment,
 295                   buffers[i].cpp, buffers[i].pitch);
 296
 297        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 298           if (INTEL_DEBUG & DEBUG_DRI)
 299              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 300           intel_region_reference(&region, depth_region);
 301        }
 302        else
 303           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 304                                                  drawable->w,
 305                                                  drawable->h,
 306                                                  buffers[i].pitch / buffers[i].cpp,
 307                                                  buffers[i].name,
 308                                                  region_name);
 309
 310        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 311           depth_region = region;
 312
 313        intel_renderbuffer_set_region(rb, region);
 314        intel_region_release(&region);
 315    }
 316
 317    driUpdateFramebufferSize(&intel->ctx, drawable);
 318 }
 319
 320 void
 321 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 322 {
 323     struct intel_context *intel = intel_context(ctx);
 324     __DRIcontext *driContext = intel->driContext;
 325     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 326                          GLsizei w, GLsizei h);
 327
 328     if (!driContext->driScreenPriv->dri2.enabled)
 329         return;
 330
 331     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 332     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 333         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 334
 335     old_viewport = ctx->Driver.Viewport;
 336     ctx->Driver.Viewport = NULL;
 337     intel->driDrawable = driContext->driDrawablePriv;
 338     intelWindowMoved(intel);
 339     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 340     ctx->Driver.Viewport = old_viewport;
 341 }
 342
 343 /**
 344  * Extension strings exported by the intel driver.
 345  *
 346  * Extensions supported by all chips supported by i830_dri, i915_dri, or
 347  * i965_dri.
 348  */
 349 static const struct dri_extension card_extensions[] = {
 350    { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 351    { "GL_ARB_multitexture",               NULL },
 352    { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 353    { "GL_ARB_texture_border_clamp",       NULL },
 354    { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 355    { "GL_ARB_texture_cube_map",           NULL },
 356    { "GL_ARB_texture_env_add",            NULL },
 357    { "GL_ARB_texture_env_combine",        NULL },
 358    { "GL_ARB_texture_env_crossbar",       NULL },
 359    { "GL_ARB_texture_env_dot3",           NULL },
 360    { "GL_ARB_texture_mirrored_repeat",    NULL },
 361    { "GL_ARB_texture_rectangle",          NULL },
 362    { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 363    { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 364    { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 365    { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 366    { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 367    { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 368    { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 369    { "GL_EXT_blend_logic_op",             NULL },
 370    { "GL_EXT_blend_subtract",             NULL },
 371    { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 372    { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 373    { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 374    { "GL_EXT_packed_depth_stencil",       NULL },
 375    { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 376    { "GL_EXT_stencil_wrap",               NULL },
 377    { "GL_EXT_texture_edge_clamp",         NULL },
 378    { "GL_EXT_texture_env_combine",        NULL },
 379    { "GL_EXT_texture_env_dot3",           NULL },
 380    { "GL_EXT_texture_filter_anisotropic", NULL },
 381    { "GL_EXT_texture_lod_bias",           NULL },
 382    { "GL_3DFX_texture_compression_FXT1",  NULL },
 383    { "GL_APPLE_client_storage",           NULL },
 384    { "GL_MESA_pack_invert",               NULL },
 385    { "GL_MESA_ycbcr_texture",             NULL },
 386    { "GL_NV_blend_square",                NULL },
 387    { "GL_NV_point_sprite",                GL_NV_point_sprite_functions },
 388    { "GL_NV_vertex_program",              GL_NV_vertex_program_functions },
 389    { "GL_NV_vertex_program1_1",           NULL },
 390    { "GL_SGIS_generate_mipmap",           NULL },
 391    { NULL, NULL }
 392 };
 393
 394 static const struct dri_extension brw_extensions[] = {
 395    { "GL_ARB_depth_texture",              NULL },
 396    { "GL_ARB_draw_buffers",               NULL },
 397    { "GL_ARB_fragment_program",           NULL },
 398    { "GL_ARB_fragment_program_shadow",    NULL },
 399    { "GL_ARB_fragment_shader",            NULL },
 400    { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
 401    { "GL_ARB_point_sprite",               NULL },
 402    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions },
 403    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions },
 404 #if 0
 405    /* Support for GLSL 1.20 is currently broken in core Mesa.
 406     */
 407    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions },
 408 #endif
 409    { "GL_ARB_shadow",                     NULL },
 410    { "GL_ARB_texture_non_power_of_two",   NULL },
 411    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
 412    { "GL_EXT_shadow_funcs",               NULL },
 413    { "GL_EXT_texture_sRGB",               NULL },
 414    { "GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions },
 415    { NULL,                                NULL }
 416 };
 417
 418 static const struct dri_extension arb_oq_extensions[] = {
 419    { NULL, NULL }
 420 };
 421
 422 static const struct dri_extension ttm_extensions[] = {
 423    { "GL_ARB_pixel_buffer_object",        NULL },
 424    { "GL_EXT_framebuffer_object",         GL_EXT_framebuffer_object_functions },
 425    { NULL, NULL }
 426 };
 427
 428 /**
 429  * Initializes potential list of extensions if ctx == NULL, or actually enables
 430  * extensions for a context.
 431  */
 432 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 433 {
 434    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 435
 436    /* Disable imaging extension until convolution is working in teximage paths.
 437     */
 438    enable_imaging = GL_FALSE;
 439
 440    driInitExtensions(ctx, card_extensions, enable_imaging);
 441
 442    if (intel == NULL || intel->ttm)
 443       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 444
 445    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 446       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 447 }
 448
 449 static const struct dri_debug_control debug_control[] = {
 450    { "tex",   DEBUG_TEXTURE},
 451    { "state", DEBUG_STATE},
 452    { "ioctl", DEBUG_IOCTL},
 453    { "blit",  DEBUG_BLIT},
 454    { "mip",   DEBUG_MIPTREE},
 455    { "fall",  DEBUG_FALLBACKS},
 456    { "verb",  DEBUG_VERBOSE},
 457    { "bat",   DEBUG_BATCH},
 458    { "pix",   DEBUG_PIXEL},
 459    { "buf",   DEBUG_BUFMGR},
 460    { "reg",   DEBUG_REGION},
 461    { "fbo",   DEBUG_FBO},
 462    { "lock",  DEBUG_LOCK},
 463    { "sync",  DEBUG_SYNC},
 464    { "prim",  DEBUG_PRIMS },
 465    { "vert",  DEBUG_VERTS },
 466    { "dri",   DEBUG_DRI },
 467    { "dma",   DEBUG_DMA },
 468    { "san",   DEBUG_SANITY },
 469    { "sleep", DEBUG_SLEEP },
 470    { "stats", DEBUG_STATS },
 471    { "tile",  DEBUG_TILE },
 472    { "sing",  DEBUG_SINGLE_THREAD },
 473    { "thre",  DEBUG_SINGLE_THREAD },
 474    { "wm",    DEBUG_WM },
 475    { "urb",   DEBUG_URB },
 476    { "vs",    DEBUG_VS },
 477    { NULL,    0 }
 478 };
 479
 480
 481 static void
 482 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 483 {
 484     struct intel_context *intel = intel_context(ctx);
 485
 486    _swrast_InvalidateState(ctx, new_state);
 487    _swsetup_InvalidateState(ctx, new_state);
 488    _vbo_InvalidateState(ctx, new_state);
 489    _tnl_InvalidateState(ctx, new_state);
 490    _tnl_invalidate_vertex_state(ctx, new_state);
 491
 492    intel->NewGLState |= new_state;
 493
 494    if (intel->vtbl.invalidate_state)
 495       intel->vtbl.invalidate_state( intel, new_state );
 496 }
 497
 498
 499 void
 500 intelFlush(GLcontext * ctx)
 501 {
 502    struct intel_context *intel = intel_context(ctx);
 503
 504    if (intel->Fallback)
 505       _swrast_flush(ctx);
 506
 507    if (!IS_965(intel->intelScreen->deviceID))
 508       INTEL_FIREVERTICES(intel);
 509
 510    /* Emit a flush so that any frontbuffer rendering that might have occurred
 511     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 512     * a flush for us.
 513     */
 514    intel_batchbuffer_emit_mi_flush(intel->batch);
 515
 516    if (intel->batch->map != intel->batch->ptr)
 517       intel_batchbuffer_flush(intel->batch);
 518 }
 519
 520 void
 521 intelFinish(GLcontext * ctx)
 522 {
 523    struct gl_framebuffer *fb = ctx->DrawBuffer;
 524    int i;
 525
 526    intelFlush(ctx);
 527
 528    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 529        struct intel_renderbuffer *irb;
 530
 531        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 532
 533        if (irb->region)
 534           dri_bo_wait_rendering(irb->region->buffer);
 535    }
 536    if (fb->_DepthBuffer) {
 537       /* XXX: Wait on buffer idle */
 538    }
 539 }
 540
 541 void
 542 intelInitDriverFunctions(struct dd_function_table *functions)
 543 {
 544    _mesa_init_driver_functions(functions);
 545
 546    functions->Flush = intelFlush;
 547    functions->Finish = intelFinish;
 548    functions->GetString = intelGetString;
 549    functions->UpdateState = intelInvalidateState;
 550
 551    functions->CopyColorTable = _swrast_CopyColorTable;
 552    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 553    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 554    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 555
 556    intelInitTextureFuncs(functions);
 557    intelInitStateFuncs(functions);
 558    intelInitBufferFuncs(functions);
 559    intelInitPixelFuncs(functions);
 560 }
 561
 562
 563 GLboolean
 564 intelInitContext(struct intel_context *intel,
 565                  const __GLcontextModes * mesaVis,
 566                  __DRIcontextPrivate * driContextPriv,
 567                  void *sharedContextPrivate,
 568                  struct dd_function_table *functions)
 569 {
 570    GLcontext *ctx = &intel->ctx;
 571    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 572    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 573    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 574    int fthrottle_mode;
 575
 576    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 577                                  functions, (void *) intel)) {
 578       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 579       return GL_FALSE;
 580    }
 581
 582    driContextPriv->driverPrivate = intel;
 583    intel->intelScreen = intelScreen;
 584    intel->driScreen = sPriv;
 585    intel->sarea = intelScreen->sarea;
 586    intel->driContext = driContextPriv;
 587
 588    /* Dri stuff */
 589    intel->hHWContext = driContextPriv->hHWContext;
 590    intel->driFd = sPriv->fd;
 591    intel->driHwLock = sPriv->lock;
 592
 593    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 594                        intel->driScreen->myNum,
 595                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 596    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 597       intel->maxBatchSize = 4096;
 598    else
 599       intel->maxBatchSize = BATCH_SZ;
 600
 601    intel->bufmgr = intelScreen->bufmgr;
 602    intel->ttm = intelScreen->ttm;
 603    if (intel->ttm) {
 604       int bo_reuse_mode;
 605
 606       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 607       switch (bo_reuse_mode) {
 608       case DRI_CONF_BO_REUSE_DISABLED:
 609          break;
 610       case DRI_CONF_BO_REUSE_ALL:
 611          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 612          break;
 613       }
 614    }
 615
 616    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 617
 618    /* This doesn't yet catch all non-conformant rendering, but it's a
 619     * start.
 620     */
 621    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 622       intel->strict_conformance = 1;
 623    }
 624
 625    if (intel->strict_conformance) {
 626       ctx->Const.MinLineWidth = 1.0;
 627       ctx->Const.MinLineWidthAA = 1.0;
 628       ctx->Const.MaxLineWidth = 1.0;
 629       ctx->Const.MaxLineWidthAA = 1.0;
 630       ctx->Const.LineWidthGranularity = 1.0;
 631    }
 632    else {
 633       ctx->Const.MinLineWidth = 1.0;
 634       ctx->Const.MinLineWidthAA = 1.0;
 635       ctx->Const.MaxLineWidth = 5.0;
 636       ctx->Const.MaxLineWidthAA = 5.0;
 637       ctx->Const.LineWidthGranularity = 0.5;
 638    }
 639
 640    ctx->Const.MinPointSize = 1.0;
 641    ctx->Const.MinPointSizeAA = 1.0;
 642    ctx->Const.MaxPointSize = 255.0;
 643    ctx->Const.MaxPointSizeAA = 3.0;
 644    ctx->Const.PointSizeGranularity = 1.0;
 645
 646    /* reinitialize the context point state.
 647     * It depend on constants in __GLcontextRec::Const
 648     */
 649    _mesa_init_point(ctx);
 650
 651    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 652
 653    /* Initialize the software rasterizer and helper modules. */
 654    _swrast_CreateContext(ctx);
 655    _vbo_CreateContext(ctx);
 656    _tnl_CreateContext(ctx);
 657    _swsetup_CreateContext(ctx);
 658
 659    /* Configure swrast to match hardware characteristics: */
 660    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 661    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 662
 663    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 664    intel->hw_stipple = 1;
 665
 666    /* XXX FBO: this doesn't seem to be used anywhere */
 667    switch (mesaVis->depthBits) {
 668    case 0:                     /* what to do in this case? */
 669    case 16:
 670       intel->polygon_offset_scale = 1.0;
 671       break;
 672    case 24:
 673       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 674       break;
 675    default:
 676       assert(0);
 677       break;
 678    }
 679
 680    if (IS_965(intelScreen->deviceID))
 681       intel->polygon_offset_scale /= 0xffff;
 682
 683    intel->RenderIndex = ~0;
 684
 685    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 686    intel->irqsEmitted = 0;
 687
 688    intel->do_irqs = (intel->intelScreen->irq_active &&
 689                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 690
 691    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 692
 693    _math_matrix_ctr(&intel->ViewportMatrix);
 694
 695    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 696       _mesa_printf("IRQs not active.  Exiting\n");
 697       exit(1);
 698    }
 699
 700    intelInitExtensions(ctx, GL_FALSE);
 701
 702    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 703    if (INTEL_DEBUG & DEBUG_BUFMGR)
 704       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 705
 706    if (!sPriv->dri2.enabled)
 707       intel_recreate_static_regions(intel);
 708
 709    intel->batch = intel_batchbuffer_alloc(intel);
 710
 711    intel_bufferobj_init(intel);
 712    intel_fbo_init(intel);
 713
 714    if (intel->ctx.Mesa_DXTn) {
 715       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 716       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 717    }
 718    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 719       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 720    }
 721
 722    intel->prim.primitive = ~0;
 723
 724    /* Force all software fallbacks */
 725    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 726       fprintf(stderr, "disabling 3D rasterization\n");
 727       intel->no_rast = 1;
 728    }
 729
 730    /* Disable all hardware rendering (skip emitting batches and fences/waits
 731     * to the kernel)
 732     */
 733    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 734
 735    return GL_TRUE;
 736 }
 737
 738 void
 739 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 740 {
 741    struct intel_context *intel =
 742       (struct intel_context *) driContextPriv->driverPrivate;
 743
 744    assert(intel);               /* should never be null */
 745    if (intel) {
 746       GLboolean release_texture_heaps;
 747
 748       INTEL_FIREVERTICES(intel);
 749
 750       intel->vtbl.destroy(intel);
 751
 752       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 753       _swsetup_DestroyContext(&intel->ctx);
 754       _tnl_DestroyContext(&intel->ctx);
 755       _vbo_DestroyContext(&intel->ctx);
 756
 757       _swrast_DestroyContext(&intel->ctx);
 758       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 759
 760       intel_batchbuffer_free(intel->batch);
 761       intel->batch = NULL;
 762
 763       free(intel->prim.vb);
 764       intel->prim.vb = NULL;
 765       dri_bo_unreference(intel->prim.vb_bo);
 766       intel->prim.vb_bo = NULL;
 767
 768       if (release_texture_heaps) {
 769          /* This share group is about to go away, free our private
 770           * texture object data.
 771           */
 772          if (INTEL_DEBUG & DEBUG_TEXTURE)
 773             fprintf(stderr, "do something to free texture heaps\n");
 774       }
 775
 776       intel_region_release(&intel->front_region);
 777       intel_region_release(&intel->back_region);
 778       intel_region_release(&intel->third_region);
 779       intel_region_release(&intel->depth_region);
 780
 781       driDestroyOptionCache(&intel->optionCache);
 782
 783       /* free the Mesa context */
 784       _mesa_free_context_data(&intel->ctx);
 785    }
 786 }
 787
 788 GLboolean
 789 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 790 {
 791    return GL_TRUE;
 792 }
 793
 794 GLboolean
 795 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 796                  __DRIdrawablePrivate * driDrawPriv,
 797                  __DRIdrawablePrivate * driReadPriv)
 798 {
 799    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 800
 801    if (driContextPriv) {
 802       struct intel_context *intel =
 803          (struct intel_context *) driContextPriv->driverPrivate;
 804       struct intel_framebuffer *intel_fb =
 805          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 806       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 807
 808       if (driContextPriv->driScreenPriv->dri2.enabled) {
 809           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 810           if (driDrawPriv != driReadPriv)
 811               intel_update_renderbuffers(driContextPriv, driReadPriv);
 812       } else {
 813           /* XXX FBO temporary fix-ups! */
 814           /* if the renderbuffers don't have regions, init them from the context */
 815          struct intel_renderbuffer *irbDepth
 816             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 817          struct intel_renderbuffer *irbStencil
 818             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 819
 820          if (intel_fb->color_rb[0]) {
 821             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 822                                           intel->front_region);
 823          }
 824          if (intel_fb->color_rb[1]) {
 825             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 826                                           intel->back_region);
 827          }
 828 #if 0
 829          if (intel_fb->color_rb[2]) {
 830             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 831                                           intel->third_region);
 832          }
 833 #endif
 834          if (irbDepth) {
 835             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 836          }
 837          if (irbStencil) {
 838             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 839          }
 840       }
 841
 842       /* set GLframebuffer size to match window, if needed */
 843       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 844
 845       if (driReadPriv != driDrawPriv) {
 846          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 847       }
 848
 849       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 850
 851       /* The drawbuffer won't always be updated by _mesa_make_current:
 852        */
 853       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 854
 855          if (intel->driReadDrawable != driReadPriv)
 856             intel->driReadDrawable = driReadPriv;
 857
 858          if (intel->driDrawable != driDrawPriv) {
 859             if (driDrawPriv->swap_interval == (unsigned)-1) {
 860                int i;
 861
 862                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 863                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 864                  : VBLANK_FLAG_NO_IRQ;
 865
 866                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 867                driDrawableInitVBlank(driDrawPriv);
 868                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 869
 870                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 871                   if (intel_fb->color_rb[i])
 872                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 873                }
 874             }
 875             intel->driDrawable = driDrawPriv;
 876             intelWindowMoved(intel);
 877          }
 878
 879          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 880       }
 881    }
 882    else {
 883       _mesa_make_current(NULL, NULL, NULL);
 884    }
 885
 886    return GL_TRUE;
 887 }
 888
 889 static void
 890 intelContendedLock(struct intel_context *intel, GLuint flags)
 891 {
 892    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 893    __DRIscreenPrivate *sPriv = intel->driScreen;
 894    volatile struct drm_i915_sarea *sarea = intel->sarea;
 895    int me = intel->hHWContext;
 896
 897    drmGetLock(intel->driFd, intel->hHWContext, flags);
 898    intel->locked = 1;
 899
 900    if (INTEL_DEBUG & DEBUG_LOCK)
 901       _mesa_printf("%s - got contended lock\n", __progname);
 902
 903    /* If the window moved, may need to set a new cliprect now.
 904     *
 905     * NOTE: This releases and regains the hw lock, so all state
 906     * checking must be done *after* this call:
 907     */
 908    if (dPriv)
 909        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 910
 911    if (sarea && sarea->ctxOwner != me) {
 912       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 913          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 914                  sarea->ctxOwner, me);
 915       }
 916       sarea->ctxOwner = me;
 917    }
 918
 919    /* If the last consumer of the texture memory wasn't us, notify the fake
 920     * bufmgr and record the new owner.  We should have the memory shared
 921     * between contexts of a single fake bufmgr, but this will at least make
 922     * things correct for now.
 923     */
 924    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 925       sarea->texAge = intel->hHWContext;
 926       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 927       if (INTEL_DEBUG & DEBUG_BATCH)
 928          intel_decode_context_reset();
 929       if (INTEL_DEBUG & DEBUG_BUFMGR)
 930          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 931                  sarea->ctxOwner, intel->hHWContext);
 932    }
 933
 934    /* Drawable changed?
 935     */
 936    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 937        intelWindowMoved(intel);
 938        intel->lastStamp = dPriv->lastStamp;
 939    }
 940 }
 941
 942
 943 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
 944
 945 /* Lock the hardware and validate our state.
 946  */
 947 void LOCK_HARDWARE( struct intel_context *intel )
 948 {
 949     __DRIdrawable *dPriv = intel->driDrawable;
 950     __DRIscreen *sPriv = intel->driScreen;
 951     char __ret = 0;
 952     struct intel_framebuffer *intel_fb = NULL;
 953     struct intel_renderbuffer *intel_rb = NULL;
 954
 955     _glthread_LOCK_MUTEX(lockMutex);
 956     assert(!intel->locked);
 957     intel->locked = 1;
 958
 959     if (intel->driDrawable) {
 960        intel_fb = intel->driDrawable->driverPrivate;
 961
 962        if (intel_fb)
 963           intel_rb =
 964              intel_get_renderbuffer(&intel_fb->Base,
 965                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
 966     }
 967
 968     if (intel_rb && dPriv->vblFlags &&
 969         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
 970         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 971         drmVBlank vbl;
 972
 973         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 974
 975         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
 976             vbl.request.type |= DRM_VBLANK_SECONDARY;
 977         }
 978
 979         vbl.request.sequence = intel_rb->vbl_pending;
 980         drmWaitVBlank(intel->driFd, &vbl);
 981         intel_fb->vbl_waited = vbl.reply.sequence;
 982     }
 983
 984     if (!sPriv->dri2.enabled) {
 985         DRM_CAS(intel->driHwLock, intel->hHWContext,
 986                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
 987
 988         if (__ret)
 989             intelContendedLock( intel, 0 );
 990     }
 991
 992
 993     if (INTEL_DEBUG & DEBUG_LOCK)
 994       _mesa_printf("%s - locked\n", __progname);
 995 }
 996
 997
 998 /* Unlock the hardware using the global current context
 999  */
1000 void UNLOCK_HARDWARE( struct intel_context *intel )
1001 {
1002     __DRIscreen *sPriv = intel->driScreen;
1003
1004    intel->vtbl.note_unlock( intel );
1005    intel->locked = 0;
1006
1007    if (!sPriv->dri2.enabled)
1008       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1009
1010    _glthread_UNLOCK_MUTEX(lockMutex);
1011
1012    if (INTEL_DEBUG & DEBUG_LOCK)
1013       _mesa_printf("%s - unlocked\n", __progname);
1014
1015    /**
1016     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1017     * cliprects.
1018     */
1019    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1020       intel_batchbuffer_flush(intel->batch);
1021 }
1022