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_NV_point_sprite
  72 #define need_GL_ARB_multisample
  73 #define need_GL_ARB_point_parameters
  74 #define need_GL_ARB_texture_compression
  75 #define need_GL_ARB_vertex_buffer_object
  76 #define need_GL_ARB_vertex_program
  77 #define need_GL_ARB_window_pos
  78 #define need_GL_ARB_occlusion_query
  79 #define need_GL_EXT_blend_color
  80 #define need_GL_EXT_blend_equation_separate
  81 #define need_GL_EXT_blend_func_separate
  82 #define need_GL_EXT_blend_minmax
  83 #define need_GL_EXT_cull_vertex
  84 #define need_GL_EXT_fog_coord
  85 #define need_GL_EXT_framebuffer_object
  86 #define need_GL_EXT_multi_draw_arrays
  87 #define need_GL_EXT_secondary_color
  88 #define need_GL_NV_vertex_program
  89 #define need_GL_ATI_separate_stencil
  90 #define need_GL_EXT_point_parameters
  91 #define need_GL_VERSION_2_0
  92 #define need_GL_VERSION_2_1
  93 #define need_GL_ARB_shader_objects
  94 #define need_GL_ARB_vertex_shader
  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 static 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
 326     if (!driContext->driScreenPriv->dri2.enabled)
 327         return;
 328
 329     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 330     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 331         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 332
 333     ctx->Driver.Viewport = NULL;
 334     intel->driDrawable = driContext->driDrawablePriv;
 335     intelWindowMoved(intel);
 336     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 337     ctx->Driver.Viewport = intel_viewport;
 338 }
 339
 340 /**
 341  * Extension strings exported by the intel driver.
 342  *
 343  * Extensions supported by all chips supported by i830_dri, i915_dri, or
 344  * i965_dri.
 345  */
 346 static const struct dri_extension card_extensions[] = {
 347    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 348    {"GL_ARB_multitexture", NULL},
 349    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 350    {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
 351    {"GL_ARB_texture_border_clamp", NULL},
 352    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 353    {"GL_ARB_texture_cube_map", NULL},
 354    {"GL_ARB_texture_env_add", NULL},
 355    {"GL_ARB_texture_env_combine", NULL},
 356    {"GL_ARB_texture_env_crossbar", NULL},
 357    {"GL_ARB_texture_env_dot3", NULL},
 358    {"GL_ARB_texture_mirrored_repeat", NULL},
 359    {"GL_ARB_texture_non_power_of_two",   NULL },
 360    {"GL_ARB_texture_rectangle", NULL},
 361    {"GL_NV_texture_rectangle", NULL},
 362    {"GL_EXT_texture_rectangle", NULL},
 363    {"GL_ARB_point_parameters", NULL},
 364    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 365    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 366    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 367    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 368    {"GL_EXT_blend_equation_separate",
 369     GL_EXT_blend_equation_separate_functions},
 370    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 371    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 372    {"GL_EXT_blend_logic_op", NULL},
 373    {"GL_EXT_blend_subtract", NULL},
 374    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 375    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 376    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 377    {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
 378 #if 1                           /* XXX FBO temporary? */
 379    {"GL_EXT_packed_depth_stencil", NULL},
 380 #endif
 381    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 382    {"GL_EXT_stencil_wrap", NULL},
 383    {"GL_EXT_texture_edge_clamp", NULL},
 384    {"GL_EXT_texture_env_combine", NULL},
 385    {"GL_EXT_texture_env_dot3", NULL},
 386    {"GL_EXT_texture_filter_anisotropic", NULL},
 387    {"GL_EXT_texture_lod_bias", NULL},
 388    {"GL_3DFX_texture_compression_FXT1", NULL},
 389    {"GL_APPLE_client_storage", NULL},
 390    {"GL_MESA_pack_invert", NULL},
 391    {"GL_MESA_ycbcr_texture", NULL},
 392    {"GL_NV_blend_square", NULL},
 393    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 394    {"GL_NV_vertex_program1_1", NULL},
 395    { "GL_SGIS_generate_mipmap", NULL },
 396    {NULL, NULL}
 397 };
 398
 399 static const struct dri_extension brw_extensions[] = {
 400    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
 401    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
 402    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
 403    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
 404    { "GL_ARB_point_sprite",               NULL},
 405    { "GL_ARB_fragment_shader",            NULL },
 406    { "GL_ARB_draw_buffers",               NULL },
 407    { "GL_ARB_depth_texture",              NULL },
 408    { "GL_ARB_fragment_program",           NULL },
 409    { "GL_ARB_shadow",                     NULL },
 410    { "GL_EXT_shadow_funcs",               NULL },
 411    { "GL_ARB_fragment_program_shadow",    NULL },
 412    /* ARB extn won't work if not enabled */
 413    { "GL_SGIX_depth_texture",             NULL },
 414    { "GL_EXT_texture_sRGB",               NULL},
 415    { NULL,                                NULL }
 416 };
 417
 418 #ifdef I915_MMIO_READ
 419 static const struct dri_extension arb_oc_extensions[] = {
 420    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 421    {NULL, NULL}
 422 };
 423 #endif
 424
 425 static const struct dri_extension ttm_extensions[] = {
 426    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 427    {"GL_ARB_pixel_buffer_object", NULL},
 428    {NULL, NULL}
 429 };
 430
 431 /**
 432  * Initializes potential list of extensions if ctx == NULL, or actually enables
 433  * extensions for a context.
 434  */
 435 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 436 {
 437    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 438
 439    /* Disable imaging extension until convolution is working in teximage paths.
 440     */
 441    enable_imaging = GL_FALSE;
 442
 443    driInitExtensions(ctx, card_extensions, enable_imaging);
 444
 445    if (intel == NULL || intel->ttm)
 446       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 447
 448 #ifdef I915_MMIO_READ
 449    if (intel == NULL ||
 450        (IS_965(intel->intelScreen->deviceID) &&
 451         intel->intelScreen->drmMinor >= 8))
 452       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 453 #endif
 454
 455    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 456       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 457 }
 458
 459 static const struct dri_debug_control debug_control[] = {
 460    { "tex",   DEBUG_TEXTURE},
 461    { "state", DEBUG_STATE},
 462    { "ioctl", DEBUG_IOCTL},
 463    { "blit",  DEBUG_BLIT},
 464    { "mip",   DEBUG_MIPTREE},
 465    { "fall",  DEBUG_FALLBACKS},
 466    { "verb",  DEBUG_VERBOSE},
 467    { "bat",   DEBUG_BATCH},
 468    { "pix",   DEBUG_PIXEL},
 469    { "buf",   DEBUG_BUFMGR},
 470    { "reg",   DEBUG_REGION},
 471    { "fbo",   DEBUG_FBO},
 472    { "lock",  DEBUG_LOCK},
 473    { "sync",  DEBUG_SYNC},
 474    { "prim",  DEBUG_PRIMS },
 475    { "vert",  DEBUG_VERTS },
 476    { "dri",   DEBUG_DRI },
 477    { "dma",   DEBUG_DMA },
 478    { "san",   DEBUG_SANITY },
 479    { "sleep", DEBUG_SLEEP },
 480    { "stats", DEBUG_STATS },
 481    { "tile",  DEBUG_TILE },
 482    { "sing",  DEBUG_SINGLE_THREAD },
 483    { "thre",  DEBUG_SINGLE_THREAD },
 484    { "wm",    DEBUG_WM },
 485    { "urb",   DEBUG_URB },
 486    { "vs",    DEBUG_VS },
 487    { NULL,    0 }
 488 };
 489
 490
 491 static void
 492 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 493 {
 494     struct intel_context *intel = intel_context(ctx);
 495
 496    _swrast_InvalidateState(ctx, new_state);
 497    _swsetup_InvalidateState(ctx, new_state);
 498    _vbo_InvalidateState(ctx, new_state);
 499    _tnl_InvalidateState(ctx, new_state);
 500    _tnl_invalidate_vertex_state(ctx, new_state);
 501
 502    intel->NewGLState |= new_state;
 503
 504    if (intel->vtbl.invalidate_state)
 505       intel->vtbl.invalidate_state( intel, new_state );
 506 }
 507
 508
 509 void
 510 intelFlush(GLcontext * ctx)
 511 {
 512    struct intel_context *intel = intel_context(ctx);
 513
 514    if (intel->Fallback)
 515       _swrast_flush(ctx);
 516
 517    if (!IS_965(intel->intelScreen->deviceID))
 518       INTEL_FIREVERTICES(intel);
 519
 520    /* Emit a flush so that any frontbuffer rendering that might have occurred
 521     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 522     * a flush for us.
 523     */
 524    intel_batchbuffer_emit_mi_flush(intel->batch);
 525
 526    if (intel->batch->map != intel->batch->ptr)
 527       intel_batchbuffer_flush(intel->batch);
 528 }
 529
 530 void
 531 intelFinish(GLcontext * ctx)
 532 {
 533    struct gl_framebuffer *fb = ctx->DrawBuffer;
 534    int i;
 535
 536    intelFlush(ctx);
 537
 538    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 539        struct intel_renderbuffer *irb;
 540
 541        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 542
 543        if (irb->region)
 544           dri_bo_wait_rendering(irb->region->buffer);
 545    }
 546    if (fb->_DepthBuffer) {
 547       /* XXX: Wait on buffer idle */
 548    }
 549 }
 550
 551 #ifdef I915_MMIO_READ
 552 static void
 553 intelBeginQuery(GLcontext *ctx, struct gl_query_object *q)
 554 {
 555         struct intel_context *intel = intel_context( ctx );
 556         struct drm_i915_mmio io = {
 557                 .read_write = I915_MMIO_READ,
 558                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 559                 .data = &q->Result
 560         };
 561         intel->stats_wm++;
 562         intelFinish(&intel->ctx);
 563         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 564 }
 565
 566 static void
 567 intelEndQuery(GLcontext *ctx, struct gl_query_object *q)
 568 {
 569         struct intel_context *intel = intel_context( ctx );
 570         GLuint64EXT tmp;
 571         struct drm_i915_mmio io = {
 572                 .read_write = I915_MMIO_READ,
 573                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 574                 .data = &tmp
 575         };
 576         intelFinish(&intel->ctx);
 577         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 578         q->Result = tmp - q->Result;
 579         q->Ready = GL_TRUE;
 580         intel->stats_wm--;
 581 }
 582 #endif
 583
 584 void
 585 intelInitDriverFunctions(struct dd_function_table *functions)
 586 {
 587    _mesa_init_driver_functions(functions);
 588
 589    functions->Flush = intelFlush;
 590    functions->Finish = intelFinish;
 591    functions->GetString = intelGetString;
 592    functions->UpdateState = intelInvalidateState;
 593    functions->Viewport = intel_viewport;
 594
 595    functions->CopyColorTable = _swrast_CopyColorTable;
 596    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 597    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 598    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 599
 600 #ifdef I915_MMIO_READ
 601    functions->BeginQuery = intelBeginQuery;
 602    functions->EndQuery = intelEndQuery;
 603 #endif
 604
 605    intelInitTextureFuncs(functions);
 606    intelInitStateFuncs(functions);
 607    intelInitBufferFuncs(functions);
 608    intelInitPixelFuncs(functions);
 609 }
 610
 611
 612 GLboolean
 613 intelInitContext(struct intel_context *intel,
 614                  const __GLcontextModes * mesaVis,
 615                  __DRIcontextPrivate * driContextPriv,
 616                  void *sharedContextPrivate,
 617                  struct dd_function_table *functions)
 618 {
 619    GLcontext *ctx = &intel->ctx;
 620    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 621    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 622    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 623    int fthrottle_mode;
 624
 625    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 626                                  functions, (void *) intel)) {
 627       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 628       return GL_FALSE;
 629    }
 630
 631    driContextPriv->driverPrivate = intel;
 632    intel->intelScreen = intelScreen;
 633    intel->driScreen = sPriv;
 634    intel->sarea = intelScreen->sarea;
 635    intel->driContext = driContextPriv;
 636
 637    /* Dri stuff */
 638    intel->hHWContext = driContextPriv->hHWContext;
 639    intel->driFd = sPriv->fd;
 640    intel->driHwLock = sPriv->lock;
 641
 642    intel->width = intelScreen->width;
 643    intel->height = intelScreen->height;
 644
 645    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 646                        intel->driScreen->myNum,
 647                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 648    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 649       intel->maxBatchSize = 4096;
 650    else
 651       intel->maxBatchSize = BATCH_SZ;
 652
 653    intel->bufmgr = intelScreen->bufmgr;
 654    intel->ttm = intelScreen->ttm;
 655    if (intel->ttm) {
 656       int bo_reuse_mode;
 657
 658       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 659       switch (bo_reuse_mode) {
 660       case DRI_CONF_BO_REUSE_DISABLED:
 661          break;
 662       case DRI_CONF_BO_REUSE_ALL:
 663          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 664          break;
 665       }
 666    }
 667
 668    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 669
 670    /* This doesn't yet catch all non-conformant rendering, but it's a
 671     * start.
 672     */
 673    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 674       intel->strict_conformance = 1;
 675    }
 676
 677    if (intel->strict_conformance) {
 678       ctx->Const.MinLineWidth = 1.0;
 679       ctx->Const.MinLineWidthAA = 1.0;
 680       ctx->Const.MaxLineWidth = 1.0;
 681       ctx->Const.MaxLineWidthAA = 1.0;
 682       ctx->Const.LineWidthGranularity = 1.0;
 683    }
 684    else {
 685       ctx->Const.MinLineWidth = 1.0;
 686       ctx->Const.MinLineWidthAA = 1.0;
 687       ctx->Const.MaxLineWidth = 5.0;
 688       ctx->Const.MaxLineWidthAA = 5.0;
 689       ctx->Const.LineWidthGranularity = 0.5;
 690    }
 691
 692    ctx->Const.MinPointSize = 1.0;
 693    ctx->Const.MinPointSizeAA = 1.0;
 694    ctx->Const.MaxPointSize = 255.0;
 695    ctx->Const.MaxPointSizeAA = 3.0;
 696    ctx->Const.PointSizeGranularity = 1.0;
 697
 698    /* reinitialize the context point state.
 699     * It depend on constants in __GLcontextRec::Const
 700     */
 701    _mesa_init_point(ctx);
 702
 703    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 704
 705    /* Initialize the software rasterizer and helper modules. */
 706    _swrast_CreateContext(ctx);
 707    _vbo_CreateContext(ctx);
 708    _tnl_CreateContext(ctx);
 709    _swsetup_CreateContext(ctx);
 710
 711    /* Configure swrast to match hardware characteristics: */
 712    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 713    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 714
 715    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 716    intel->hw_stipple = 1;
 717
 718    /* XXX FBO: this doesn't seem to be used anywhere */
 719    switch (mesaVis->depthBits) {
 720    case 0:                     /* what to do in this case? */
 721    case 16:
 722       intel->polygon_offset_scale = 1.0;
 723       break;
 724    case 24:
 725       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 726       break;
 727    default:
 728       assert(0);
 729       break;
 730    }
 731
 732    if (IS_965(intelScreen->deviceID))
 733       intel->polygon_offset_scale /= 0xffff;
 734
 735    intel->RenderIndex = ~0;
 736
 737    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 738    intel->irqsEmitted = 0;
 739
 740    intel->do_irqs = (intel->intelScreen->irq_active &&
 741                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 742
 743    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 744
 745    _math_matrix_ctr(&intel->ViewportMatrix);
 746
 747    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 748       _mesa_printf("IRQs not active.  Exiting\n");
 749       exit(1);
 750    }
 751
 752    intelInitExtensions(ctx, GL_FALSE);
 753
 754    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 755    if (INTEL_DEBUG & DEBUG_BUFMGR)
 756       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 757
 758    if (!sPriv->dri2.enabled)
 759       intel_recreate_static_regions(intel);
 760
 761    intel->batch = intel_batchbuffer_alloc(intel);
 762
 763    intel_bufferobj_init(intel);
 764    intel_fbo_init(intel);
 765
 766    if (intel->ctx.Mesa_DXTn) {
 767       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 768       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 769    }
 770    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 771       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 772    }
 773
 774    intel->prim.primitive = ~0;
 775
 776    /* Force all software fallbacks */
 777    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 778       fprintf(stderr, "disabling 3D rasterization\n");
 779       intel->no_rast = 1;
 780    }
 781
 782    /* Disable all hardware rendering (skip emitting batches and fences/waits
 783     * to the kernel)
 784     */
 785    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 786
 787    return GL_TRUE;
 788 }
 789
 790 void
 791 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 792 {
 793    struct intel_context *intel =
 794       (struct intel_context *) driContextPriv->driverPrivate;
 795
 796    assert(intel);               /* should never be null */
 797    if (intel) {
 798       GLboolean release_texture_heaps;
 799
 800       INTEL_FIREVERTICES(intel);
 801
 802       intel->vtbl.destroy(intel);
 803
 804       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 805       _swsetup_DestroyContext(&intel->ctx);
 806       _tnl_DestroyContext(&intel->ctx);
 807       _vbo_DestroyContext(&intel->ctx);
 808
 809       _swrast_DestroyContext(&intel->ctx);
 810       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 811
 812       intel_batchbuffer_free(intel->batch);
 813       free(intel->prim.vb);
 814
 815       if (release_texture_heaps) {
 816          /* This share group is about to go away, free our private
 817           * texture object data.
 818           */
 819          if (INTEL_DEBUG & DEBUG_TEXTURE)
 820             fprintf(stderr, "do something to free texture heaps\n");
 821       }
 822
 823       /* free the Mesa context */
 824       _mesa_free_context_data(&intel->ctx);
 825    }
 826 }
 827
 828 GLboolean
 829 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 830 {
 831    return GL_TRUE;
 832 }
 833
 834 GLboolean
 835 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 836                  __DRIdrawablePrivate * driDrawPriv,
 837                  __DRIdrawablePrivate * driReadPriv)
 838 {
 839    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 840
 841    if (driContextPriv) {
 842       struct intel_context *intel =
 843          (struct intel_context *) driContextPriv->driverPrivate;
 844       struct intel_framebuffer *intel_fb =
 845          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 846       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 847
 848       if (driContextPriv->driScreenPriv->dri2.enabled) {
 849           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 850           if (driDrawPriv != driReadPriv)
 851               intel_update_renderbuffers(driContextPriv, driReadPriv);
 852       } else {
 853           /* XXX FBO temporary fix-ups! */
 854           /* if the renderbuffers don't have regions, init them from the context */
 855          struct intel_renderbuffer *irbDepth
 856             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 857          struct intel_renderbuffer *irbStencil
 858             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 859
 860          if (intel_fb->color_rb[0]) {
 861             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 862                                           intel->front_region);
 863          }
 864          if (intel_fb->color_rb[1]) {
 865             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 866                                           intel->back_region);
 867          }
 868 #if 0
 869          if (intel_fb->color_rb[2]) {
 870             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 871                                           intel->third_region);
 872          }
 873 #endif
 874          if (irbDepth) {
 875             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 876          }
 877          if (irbStencil) {
 878             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 879          }
 880       }
 881
 882       /* set GLframebuffer size to match window, if needed */
 883       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 884
 885       if (driReadPriv != driDrawPriv) {
 886          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 887       }
 888
 889       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 890
 891       /* The drawbuffer won't always be updated by _mesa_make_current:
 892        */
 893       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 894
 895          if (intel->driReadDrawable != driReadPriv)
 896             intel->driReadDrawable = driReadPriv;
 897
 898          if (intel->driDrawable != driDrawPriv) {
 899             if (driDrawPriv->swap_interval == (unsigned)-1) {
 900                int i;
 901
 902                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 903                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 904                  : VBLANK_FLAG_NO_IRQ;
 905
 906                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 907                driDrawableInitVBlank(driDrawPriv);
 908                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 909
 910                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 911                   if (intel_fb->color_rb[i])
 912                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 913                }
 914             }
 915             intel->driDrawable = driDrawPriv;
 916             intelWindowMoved(intel);
 917          }
 918
 919          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 920       }
 921    }
 922    else {
 923       _mesa_make_current(NULL, NULL, NULL);
 924    }
 925
 926    return GL_TRUE;
 927 }
 928
 929 static void
 930 intelContendedLock(struct intel_context *intel, GLuint flags)
 931 {
 932    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 933    __DRIscreenPrivate *sPriv = intel->driScreen;
 934    volatile struct drm_i915_sarea *sarea = intel->sarea;
 935    int me = intel->hHWContext;
 936
 937    drmGetLock(intel->driFd, intel->hHWContext, flags);
 938    intel->locked = 1;
 939
 940    if (INTEL_DEBUG & DEBUG_LOCK)
 941       _mesa_printf("%s - got contended lock\n", __progname);
 942
 943    /* If the window moved, may need to set a new cliprect now.
 944     *
 945     * NOTE: This releases and regains the hw lock, so all state
 946     * checking must be done *after* this call:
 947     */
 948    if (dPriv)
 949        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 950
 951    if (sarea && sarea->ctxOwner != me) {
 952       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 953          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 954                  sarea->ctxOwner, me);
 955       }
 956       sarea->ctxOwner = me;
 957    }
 958
 959    /* If the last consumer of the texture memory wasn't us, notify the fake
 960     * bufmgr and record the new owner.  We should have the memory shared
 961     * between contexts of a single fake bufmgr, but this will at least make
 962     * things correct for now.
 963     */
 964    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 965       sarea->texAge = intel->hHWContext;
 966       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 967       if (INTEL_DEBUG & DEBUG_BATCH)
 968          intel_decode_context_reset();
 969       if (INTEL_DEBUG & DEBUG_BUFMGR)
 970          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 971                  sarea->ctxOwner, intel->hHWContext);
 972    }
 973
 974    if (sarea->width != intel->width || sarea->height != intel->height) {
 975        int numClipRects = intel->numClipRects;
 976
 977        /*
 978         * FIXME: Really only need to do this when drawing to a
 979         * common back- or front buffer.
 980         */
 981
 982        /*
 983         * This will essentially drop the outstanding batchbuffer on
 984         * the floor.
 985         */
 986        intel->numClipRects = 0;
 987
 988        if (intel->Fallback)
 989            _swrast_flush(&intel->ctx);
 990
 991        if (!IS_965(intel->intelScreen->deviceID))
 992            INTEL_FIREVERTICES(intel);
 993
 994        if (intel->batch->map != intel->batch->ptr)
 995            intel_batchbuffer_flush(intel->batch);
 996
 997        intel->numClipRects = numClipRects;
 998
 999        /* force window update */
1000        intel->lastStamp = 0;
1001
1002        intel->width = sarea->width;
1003        intel->height = sarea->height;
1004    }
1005
1006    /* Drawable changed?
1007     */
1008    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1009        intelWindowMoved(intel);
1010        intel->lastStamp = dPriv->lastStamp;
1011    }
1012 }
1013
1014
1015 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1016
1017 /* Lock the hardware and validate our state.
1018  */
1019 void LOCK_HARDWARE( struct intel_context *intel )
1020 {
1021     __DRIdrawable *dPriv = intel->driDrawable;
1022     __DRIscreen *sPriv = intel->driScreen;
1023     char __ret = 0;
1024     struct intel_framebuffer *intel_fb = NULL;
1025     struct intel_renderbuffer *intel_rb = NULL;
1026
1027     _glthread_LOCK_MUTEX(lockMutex);
1028     assert(!intel->locked);
1029     intel->locked = 1;
1030
1031     if (intel->driDrawable) {
1032        intel_fb = intel->driDrawable->driverPrivate;
1033
1034        if (intel_fb)
1035           intel_rb =
1036              intel_get_renderbuffer(&intel_fb->Base,
1037                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1038     }
1039
1040     if (intel_rb && dPriv->vblFlags &&
1041         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1042         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1043         drmVBlank vbl;
1044
1045         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1046
1047         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1048             vbl.request.type |= DRM_VBLANK_SECONDARY;
1049         }
1050
1051         vbl.request.sequence = intel_rb->vbl_pending;
1052         drmWaitVBlank(intel->driFd, &vbl);
1053         intel_fb->vbl_waited = vbl.reply.sequence;
1054     }
1055
1056     if (!sPriv->dri2.enabled) {
1057         DRM_CAS(intel->driHwLock, intel->hHWContext,
1058                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1059
1060         if (__ret)
1061             intelContendedLock( intel, 0 );
1062     }
1063
1064
1065     if (INTEL_DEBUG & DEBUG_LOCK)
1066       _mesa_printf("%s - locked\n", __progname);
1067 }
1068
1069
1070 /* Unlock the hardware using the global current context
1071  */
1072 void UNLOCK_HARDWARE( struct intel_context *intel )
1073 {
1074     __DRIscreen *sPriv = intel->driScreen;
1075
1076    intel->vtbl.note_unlock( intel );
1077    intel->locked = 0;
1078
1079    if (!sPriv->dri2.enabled)
1080       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1081
1082    _glthread_UNLOCK_MUTEX(lockMutex);
1083
1084    if (INTEL_DEBUG & DEBUG_LOCK)
1085       _mesa_printf("%s - unlocked\n", __progname);
1086
1087    /**
1088     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1089     * cliprects.
1090     */
1091    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1092       intel_batchbuffer_flush(intel->batch);
1093 }
1094