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 "glheader.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "simple_list.h"
  33 #include "extensions.h"
  34 #include "framebuffer.h"
  35 #include "imports.h"
  36 #include "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_ioctl.h"
  55 #include "intel_batchbuffer.h"
  56 #include "intel_blit.h"
  57 #include "intel_pixel.h"
  58 #include "intel_regions.h"
  59 #include "intel_buffer_objects.h"
  60 #include "intel_fbo.h"
  61 #include "intel_decode.h"
  62 #include "intel_bufmgr.h"
  63
  64 #include "drirenderbuffer.h"
  65 #include "vblank.h"
  66 #include "utils.h"
  67 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  68 #ifndef INTEL_DEBUG
  69 int INTEL_DEBUG = (0);
  70 #endif
  71
  72 #define need_GL_NV_point_sprite
  73 #define need_GL_ARB_multisample
  74 #define need_GL_ARB_point_parameters
  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_window_pos
  79 #define need_GL_ARB_occlusion_query
  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_secondary_color
  89 #define need_GL_NV_vertex_program
  90 #define need_GL_ATI_separate_stencil
  91 #define need_GL_EXT_point_parameters
  92 #define need_GL_VERSION_2_0
  93 #define need_GL_VERSION_2_1
  94 #define need_GL_ARB_shader_objects
  95 #define need_GL_ARB_vertex_shader
  96
  97 #include "extension_helper.h"
  98
  99 #define DRIVER_DATE                     "20080716"
 100 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
 101
 102 static const GLubyte *
 103 intelGetString(GLcontext * ctx, GLenum name)
 104 {
 105    const struct intel_context *const intel = intel_context(ctx);
 106    const char *chipset;
 107    static char buffer[128];
 108
 109    switch (name) {
 110    case GL_VENDOR:
 111       return (GLubyte *) "Tungsten Graphics, Inc";
 112       break;
 113
 114    case GL_RENDERER:
 115       switch (intel->intelScreen->deviceID) {
 116       case PCI_CHIP_845_G:
 117          chipset = "Intel(R) 845G";
 118          break;
 119       case PCI_CHIP_I830_M:
 120          chipset = "Intel(R) 830M";
 121          break;
 122       case PCI_CHIP_I855_GM:
 123          chipset = "Intel(R) 852GM/855GM";
 124          break;
 125       case PCI_CHIP_I865_G:
 126          chipset = "Intel(R) 865G";
 127          break;
 128       case PCI_CHIP_I915_G:
 129          chipset = "Intel(R) 915G";
 130          break;
 131       case PCI_CHIP_E7221_G:
 132          chipset = "Intel (R) E7221G (i915)";
 133          break;
 134       case PCI_CHIP_I915_GM:
 135          chipset = "Intel(R) 915GM";
 136          break;
 137       case PCI_CHIP_I945_G:
 138          chipset = "Intel(R) 945G";
 139          break;
 140       case PCI_CHIP_I945_GM:
 141          chipset = "Intel(R) 945GM";
 142          break;
 143       case PCI_CHIP_I945_GME:
 144          chipset = "Intel(R) 945GME";
 145          break;
 146       case PCI_CHIP_G33_G:
 147          chipset = "Intel(R) G33";
 148          break;
 149       case PCI_CHIP_Q35_G:
 150          chipset = "Intel(R) Q35";
 151          break;
 152       case PCI_CHIP_Q33_G:
 153          chipset = "Intel(R) Q33";
 154          break;
 155       case PCI_CHIP_I965_Q:
 156          chipset = "Intel(R) 965Q";
 157          break;
 158       case PCI_CHIP_I965_G:
 159       case PCI_CHIP_I965_G_1:
 160          chipset = "Intel(R) 965G";
 161          break;
 162       case PCI_CHIP_I946_GZ:
 163          chipset = "Intel(R) 946GZ";
 164          break;
 165       case PCI_CHIP_I965_GM:
 166          chipset = "Intel(R) 965GM";
 167          break;
 168       case PCI_CHIP_I965_GME:
 169          chipset = "Intel(R) 965GME/GLE";
 170          break;
 171       case PCI_CHIP_GM45_GM:
 172          chipset = "Mobile Intel® GM45 Express Chipset";
 173          break;
 174       case PCI_CHIP_IGD_E_G:
 175          chipset = "Intel(R) Integrated Graphics Device";
 176          break;
 177       case PCI_CHIP_G45_G:
 178          chipset = "Intel(R) G45/G43";
 179          break;
 180       case PCI_CHIP_Q45_G:
 181          chipset = "Intel(R) Q45/Q43";
 182          break;
 183       default:
 184          chipset = "Unknown Intel Chipset";
 185          break;
 186       }
 187
 188       (void) driGetRendererString(buffer, chipset,
 189                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 190                                   0);
 191       return (GLubyte *) buffer;
 192
 193    default:
 194       return NULL;
 195    }
 196 }
 197
 198 void
 199 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 200 {
 201    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 202    struct intel_renderbuffer *rb;
 203    struct intel_region *region, *depth_region;
 204    struct intel_context *intel = context->driverPrivate;
 205    __DRIbuffer *buffers;
 206    __DRIscreen *screen;
 207    int i, count;
 208    unsigned int attachments[10];
 209    uint32_t name;
 210    const char *region_name;
 211
 212    if (INTEL_DEBUG & DEBUG_DRI)
 213       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 214
 215    screen = intel->intelScreen->driScrnPriv;
 216
 217    i = 0;
 218    if (intel_fb->color_rb[0])
 219       attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 220    if (intel_fb->color_rb[1])
 221       attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 222    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 223       attachments[i++] = __DRI_BUFFER_DEPTH;
 224    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 225       attachments[i++] = __DRI_BUFFER_STENCIL;
 226
 227    buffers = (*screen->dri2.loader->getBuffers)(drawable,
 228                                                 &drawable->w,
 229                                                 &drawable->h,
 230                                                 attachments, i,
 231                                                 &count,
 232                                                 drawable->loaderPrivate);
 233
 234    drawable->x = 0;
 235    drawable->y = 0;
 236    drawable->backX = 0;
 237    drawable->backY = 0;
 238    drawable->numClipRects = 1;
 239    drawable->pClipRects[0].x1 = 0;
 240    drawable->pClipRects[0].y1 = 0;
 241    drawable->pClipRects[0].x2 = drawable->w;
 242    drawable->pClipRects[0].y2 = drawable->h;
 243    drawable->numBackClipRects = 1;
 244    drawable->pBackClipRects[0].x1 = 0;
 245    drawable->pBackClipRects[0].y1 = 0;
 246    drawable->pBackClipRects[0].x2 = drawable->w;
 247    drawable->pBackClipRects[0].y2 = drawable->h;
 248
 249    depth_region = NULL;
 250    for (i = 0; i < count; i++) {
 251        switch (buffers[i].attachment) {
 252        case __DRI_BUFFER_FRONT_LEFT:
 253            rb = intel_fb->color_rb[0];
 254            region_name = "dri2 front buffer";
 255            break;
 256
 257        case __DRI_BUFFER_BACK_LEFT:
 258            rb = intel_fb->color_rb[1];
 259            region_name = "dri2 back buffer";
 260            break;
 261
 262        case __DRI_BUFFER_DEPTH:
 263            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 264            region_name = "dri2 depth buffer";
 265            break;
 266
 267        case __DRI_BUFFER_STENCIL:
 268            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 269            region_name = "dri2 stencil buffer";
 270            break;
 271
 272        case __DRI_BUFFER_ACCUM:
 273        default:
 274            fprintf(stderr,
 275                    "unhandled buffer attach event, attacment type %d\n",
 276                    buffers[i].attachment);
 277            return;
 278        }
 279
 280        if (rb->region) {
 281           intel_bo_flink(rb->region->buffer, &name);
 282           if (name == buffers[i].name)
 283              continue;
 284        }
 285
 286        if (INTEL_DEBUG & DEBUG_DRI)
 287           fprintf(stderr,
 288                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 289                   buffers[i].name, buffers[i].attachment,
 290                   buffers[i].cpp, buffers[i].pitch);
 291
 292        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 293           if (INTEL_DEBUG & DEBUG_DRI)
 294              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 295           intel_region_reference(&region, depth_region);
 296        }
 297        else
 298           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 299                                                  buffers[i].pitch / buffers[i].cpp,
 300                                                  drawable->h,
 301                                                  buffers[i].name,
 302                                                  region_name);
 303
 304        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 305           depth_region = region;
 306
 307        intel_renderbuffer_set_region(rb, region);
 308        intel_region_release(&region);
 309    }
 310
 311    driUpdateFramebufferSize(&intel->ctx, drawable);
 312 }
 313
 314 static void
 315 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 316 {
 317     struct intel_context *intel = intel_context(ctx);
 318     __DRIcontext *driContext = intel->driContext;
 319
 320     if (!driContext->driScreenPriv->dri2.enabled)
 321         return;
 322
 323     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 324     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 325         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 326
 327     ctx->Driver.Viewport = NULL;
 328     intel->driDrawable = driContext->driDrawablePriv;
 329     intelWindowMoved(intel);
 330     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 331     ctx->Driver.Viewport = intel_viewport;
 332 }
 333
 334 /**
 335  * Extension strings exported by the intel driver.
 336  *
 337  * Extensions supported by all chips supported by i830_dri, i915_dri, or
 338  * i965_dri.
 339  */
 340 static const struct dri_extension card_extensions[] = {
 341    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 342    {"GL_ARB_multitexture", NULL},
 343    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 344    {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
 345    {"GL_ARB_texture_border_clamp", NULL},
 346    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 347    {"GL_ARB_texture_cube_map", NULL},
 348    {"GL_ARB_texture_env_add", NULL},
 349    {"GL_ARB_texture_env_combine", NULL},
 350    {"GL_ARB_texture_env_crossbar", NULL},
 351    {"GL_ARB_texture_env_dot3", NULL},
 352    {"GL_ARB_texture_mirrored_repeat", NULL},
 353    {"GL_ARB_texture_non_power_of_two",   NULL },
 354    {"GL_ARB_texture_rectangle", NULL},
 355    {"GL_NV_texture_rectangle", NULL},
 356    {"GL_EXT_texture_rectangle", NULL},
 357    {"GL_ARB_point_parameters", NULL},
 358    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 359    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 360    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 361    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 362    {"GL_EXT_blend_equation_separate",
 363     GL_EXT_blend_equation_separate_functions},
 364    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 365    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 366    {"GL_EXT_blend_logic_op", NULL},
 367    {"GL_EXT_blend_subtract", NULL},
 368    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 369    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 370    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 371    {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
 372 #if 1                           /* XXX FBO temporary? */
 373    {"GL_EXT_packed_depth_stencil", NULL},
 374 #endif
 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_vertex_program", GL_NV_vertex_program_functions},
 388    {"GL_NV_vertex_program1_1", NULL},
 389    { "GL_SGIS_generate_mipmap", NULL },
 390    {NULL, NULL}
 391 };
 392
 393 static const struct dri_extension brw_extensions[] = {
 394    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
 395    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
 396    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
 397    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
 398    { "GL_ARB_point_sprite",               NULL},
 399    { "GL_ARB_fragment_shader",            NULL },
 400    { "GL_ARB_draw_buffers",               NULL },
 401    { "GL_ARB_depth_texture",              NULL },
 402    { "GL_ARB_fragment_program",           NULL },
 403    { "GL_ARB_shadow",                     NULL },
 404    { "GL_EXT_shadow_funcs",               NULL },
 405    { "GL_ARB_fragment_program_shadow",    NULL },
 406    /* ARB extn won't work if not enabled */
 407    { "GL_SGIX_depth_texture",             NULL },
 408    { "GL_EXT_texture_sRGB",               NULL},
 409    { NULL,                                NULL }
 410 };
 411
 412 #ifdef I915_MMIO_READ
 413 static const struct dri_extension arb_oc_extensions[] = {
 414    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 415    {NULL, NULL}
 416 };
 417 #endif
 418
 419 static const struct dri_extension ttm_extensions[] = {
 420    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 421    {"GL_ARB_pixel_buffer_object", NULL},
 422    {NULL, NULL}
 423 };
 424
 425 /**
 426  * Initializes potential list of extensions if ctx == NULL, or actually enables
 427  * extensions for a context.
 428  */
 429 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 430 {
 431    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 432
 433    /* Disable imaging extension until convolution is working in teximage paths.
 434     */
 435    enable_imaging = GL_FALSE;
 436
 437    driInitExtensions(ctx, card_extensions, enable_imaging);
 438
 439    if (intel == NULL || intel->ttm)
 440       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 441
 442 #ifdef I915_MMIO_READ
 443    if (intel == NULL ||
 444        (IS_965(intel->intelScreen->deviceID) &&
 445         intel->intelScreen->drmMinor >= 8))
 446       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 447 #endif
 448
 449    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 450       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 451 }
 452
 453 static const struct dri_debug_control debug_control[] = {
 454    { "tex",   DEBUG_TEXTURE},
 455    { "state", DEBUG_STATE},
 456    { "ioctl", DEBUG_IOCTL},
 457    { "blit",  DEBUG_BLIT},
 458    { "mip",   DEBUG_MIPTREE},
 459    { "fall",  DEBUG_FALLBACKS},
 460    { "verb",  DEBUG_VERBOSE},
 461    { "bat",   DEBUG_BATCH},
 462    { "pix",   DEBUG_PIXEL},
 463    { "buf",   DEBUG_BUFMGR},
 464    { "reg",   DEBUG_REGION},
 465    { "fbo",   DEBUG_FBO},
 466    { "lock",  DEBUG_LOCK},
 467    { "sync",  DEBUG_SYNC},
 468    { "prim",  DEBUG_PRIMS },
 469    { "vert",  DEBUG_VERTS },
 470    { "dri",   DEBUG_DRI },
 471    { "dma",   DEBUG_DMA },
 472    { "san",   DEBUG_SANITY },
 473    { "sleep", DEBUG_SLEEP },
 474    { "stats", DEBUG_STATS },
 475    { "tile",  DEBUG_TILE },
 476    { "sing",  DEBUG_SINGLE_THREAD },
 477    { "thre",  DEBUG_SINGLE_THREAD },
 478    { "wm",    DEBUG_WM },
 479    { "urb",   DEBUG_URB },
 480    { "vs",    DEBUG_VS },
 481    { NULL,    0 }
 482 };
 483
 484
 485 static void
 486 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 487 {
 488     struct intel_context *intel = intel_context(ctx);
 489
 490    _swrast_InvalidateState(ctx, new_state);
 491    _swsetup_InvalidateState(ctx, new_state);
 492    _vbo_InvalidateState(ctx, new_state);
 493    _tnl_InvalidateState(ctx, new_state);
 494    _tnl_invalidate_vertex_state(ctx, new_state);
 495
 496    intel->NewGLState |= new_state;
 497
 498    if (intel->vtbl.invalidate_state)
 499       intel->vtbl.invalidate_state( intel, new_state );
 500 }
 501
 502
 503 void
 504 intelFlush(GLcontext * ctx)
 505 {
 506    struct intel_context *intel = intel_context(ctx);
 507
 508    if (intel->Fallback)
 509       _swrast_flush(ctx);
 510
 511    if (!IS_965(intel->intelScreen->deviceID))
 512       INTEL_FIREVERTICES(intel);
 513
 514    /* Emit a flush so that any frontbuffer rendering that might have occurred
 515     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 516     * a flush for us.
 517     */
 518    intel_batchbuffer_emit_mi_flush(intel->batch);
 519
 520    if (intel->batch->map != intel->batch->ptr)
 521       intel_batchbuffer_flush(intel->batch);
 522 }
 523
 524 void
 525 intelFinish(GLcontext * ctx)
 526 {
 527    struct gl_framebuffer *fb = ctx->DrawBuffer;
 528    int i;
 529
 530    intelFlush(ctx);
 531
 532    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 533        struct intel_renderbuffer *irb;
 534
 535        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 536
 537        if (irb->region)
 538           dri_bo_wait_rendering(irb->region->buffer);
 539    }
 540    if (fb->_DepthBuffer) {
 541       /* XXX: Wait on buffer idle */
 542    }
 543 }
 544
 545 #ifdef I915_MMIO_READ
 546 static void
 547 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 548 {
 549         struct intel_context *intel = intel_context( ctx );
 550         struct drm_i915_mmio io = {
 551                 .read_write = I915_MMIO_READ,
 552                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 553                 .data = &q->Result
 554         };
 555         intel->stats_wm++;
 556         intelFinish(&intel->ctx);
 557         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 558 }
 559
 560 static void
 561 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 562 {
 563         struct intel_context *intel = intel_context( ctx );
 564         GLuint64EXT tmp;
 565         struct drm_i915_mmio io = {
 566                 .read_write = I915_MMIO_READ,
 567                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 568                 .data = &tmp
 569         };
 570         intelFinish(&intel->ctx);
 571         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 572         q->Result = tmp - q->Result;
 573         q->Ready = GL_TRUE;
 574         intel->stats_wm--;
 575 }
 576 #endif
 577
 578 /** Driver-specific fence emit implementation for the fake memory manager. */
 579 static unsigned int
 580 intel_fence_emit(void *private)
 581 {
 582    struct intel_context *intel = (struct intel_context *)private;
 583    unsigned int fence;
 584
 585    /* XXX: Need to emit a flush, if we haven't already (at least with the
 586     * current batchbuffer implementation, we have).
 587     */
 588
 589    fence = intelEmitIrqLocked(intel);
 590
 591    return fence;
 592 }
 593
 594 /** Driver-specific fence wait implementation for the fake memory manager. */
 595 static int
 596 intel_fence_wait(void *private, unsigned int cookie)
 597 {
 598    struct intel_context *intel = (struct intel_context *)private;
 599
 600    intelWaitIrq(intel, cookie);
 601
 602    return 0;
 603 }
 604
 605 static GLboolean
 606 intel_init_bufmgr(struct intel_context *intel)
 607 {
 608    intelScreenPrivate *intelScreen = intel->intelScreen;
 609    GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
 610    int gem_kernel = 0;
 611    GLboolean gem_supported;
 612    struct drm_i915_getparam gp;
 613
 614    gp.param = I915_PARAM_HAS_GEM;
 615    gp.value = &gem_kernel;
 616
 617    (void) drmCommandWriteRead(intel->driFd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 618
 619    /* If we've got a new enough DDX that's initializing GEM and giving us
 620     * object handles for the shared buffers, use that.
 621     */
 622    intel->ttm = GL_FALSE;
 623    if (intel->intelScreen->driScrnPriv->dri2.enabled)
 624        gem_supported = GL_TRUE;
 625    else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 626             gem_kernel &&
 627             intel->intelScreen->front.bo_handle != -1)
 628        gem_supported = GL_TRUE;
 629    else
 630        gem_supported = GL_FALSE;
 631
 632    if (!gem_disable && gem_supported) {
 633       int bo_reuse_mode;
 634       intel->bufmgr = intel_bufmgr_gem_init(intel->driFd,
 635                                             BATCH_SZ);
 636       if (intel->bufmgr != NULL)
 637          intel->ttm = GL_TRUE;
 638
 639       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 640       switch (bo_reuse_mode) {
 641       case DRI_CONF_BO_REUSE_DISABLED:
 642          break;
 643       case DRI_CONF_BO_REUSE_ALL:
 644          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 645          break;
 646       }
 647    }
 648    /* Otherwise, use the classic buffer manager. */
 649    if (intel->bufmgr == NULL) {
 650       if (gem_disable) {
 651          fprintf(stderr, "GEM disabled.  Using classic.\n");
 652       } else {
 653          fprintf(stderr, "Failed to initialize GEM.  "
 654                  "Falling back to classic.\n");
 655       }
 656
 657       if (intelScreen->tex.size == 0) {
 658          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 659                  __func__, __LINE__);
 660          return GL_FALSE;
 661       }
 662
 663       intel->bufmgr = intel_bufmgr_fake_init(intelScreen->tex.offset,
 664                                              intelScreen->tex.map,
 665                                              intelScreen->tex.size,
 666                                              intel_fence_emit,
 667                                              intel_fence_wait,
 668                                              intel);
 669    }
 670
 671    /* XXX bufmgr should be per-screen, not per-context */
 672    intelScreen->ttm = intel->ttm;
 673
 674    return GL_TRUE;
 675 }
 676
 677 void
 678 intelInitDriverFunctions(struct dd_function_table *functions)
 679 {
 680    _mesa_init_driver_functions(functions);
 681
 682    functions->Flush = intelFlush;
 683    functions->Finish = intelFinish;
 684    functions->GetString = intelGetString;
 685    functions->UpdateState = intelInvalidateState;
 686    functions->Viewport = intel_viewport;
 687
 688    functions->CopyColorTable = _swrast_CopyColorTable;
 689    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 690    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 691    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 692
 693 #ifdef I915_MMIO_READ
 694    functions->BeginQuery = intelBeginQuery;
 695    functions->EndQuery = intelEndQuery;
 696 #endif
 697
 698    intelInitTextureFuncs(functions);
 699    intelInitStateFuncs(functions);
 700    intelInitBufferFuncs(functions);
 701    intelInitPixelFuncs(functions);
 702 }
 703
 704
 705 GLboolean
 706 intelInitContext(struct intel_context *intel,
 707                  const __GLcontextModes * mesaVis,
 708                  __DRIcontextPrivate * driContextPriv,
 709                  void *sharedContextPrivate,
 710                  struct dd_function_table *functions)
 711 {
 712    GLcontext *ctx = &intel->ctx;
 713    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 714    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 715    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 716    volatile struct drm_i915_sarea *saPriv = (struct drm_i915_sarea *)
 717       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 718    int fthrottle_mode;
 719
 720    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 721                                  functions, (void *) intel)) {
 722       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 723       return GL_FALSE;
 724    }
 725
 726    driContextPriv->driverPrivate = intel;
 727    intel->intelScreen = intelScreen;
 728    intel->driScreen = sPriv;
 729    intel->sarea = saPriv;
 730    intel->driContext = driContextPriv;
 731
 732    /* Dri stuff */
 733    intel->hHWContext = driContextPriv->hHWContext;
 734    intel->driFd = sPriv->fd;
 735    intel->driHwLock = sPriv->lock;
 736
 737    intel->width = intelScreen->width;
 738    intel->height = intelScreen->height;
 739
 740    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 741                        intel->driScreen->myNum,
 742                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 743    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 744       intel->maxBatchSize = 4096;
 745    else
 746       intel->maxBatchSize = BATCH_SZ;
 747
 748    if (!intel_init_bufmgr(intel))
 749       return GL_FALSE;
 750
 751    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 752
 753    /* This doesn't yet catch all non-conformant rendering, but it's a
 754     * start.
 755     */
 756    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 757       intel->strict_conformance = 1;
 758    }
 759
 760    if (intel->strict_conformance) {
 761       ctx->Const.MinLineWidth = 1.0;
 762       ctx->Const.MinLineWidthAA = 1.0;
 763       ctx->Const.MaxLineWidth = 1.0;
 764       ctx->Const.MaxLineWidthAA = 1.0;
 765       ctx->Const.LineWidthGranularity = 1.0;
 766    }
 767    else {
 768       ctx->Const.MinLineWidth = 1.0;
 769       ctx->Const.MinLineWidthAA = 1.0;
 770       ctx->Const.MaxLineWidth = 5.0;
 771       ctx->Const.MaxLineWidthAA = 5.0;
 772       ctx->Const.LineWidthGranularity = 0.5;
 773    }
 774
 775    ctx->Const.MinPointSize = 1.0;
 776    ctx->Const.MinPointSizeAA = 1.0;
 777    ctx->Const.MaxPointSize = 255.0;
 778    ctx->Const.MaxPointSizeAA = 3.0;
 779    ctx->Const.PointSizeGranularity = 1.0;
 780
 781    /* reinitialize the context point state.
 782     * It depend on constants in __GLcontextRec::Const
 783     */
 784    _mesa_init_point(ctx);
 785
 786    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 787
 788    /* Initialize the software rasterizer and helper modules. */
 789    _swrast_CreateContext(ctx);
 790    _vbo_CreateContext(ctx);
 791    _tnl_CreateContext(ctx);
 792    _swsetup_CreateContext(ctx);
 793
 794    /* Configure swrast to match hardware characteristics: */
 795    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 796    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 797
 798    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 799    intel->hw_stipple = 1;
 800
 801    /* XXX FBO: this doesn't seem to be used anywhere */
 802    switch (mesaVis->depthBits) {
 803    case 0:                     /* what to do in this case? */
 804    case 16:
 805       intel->polygon_offset_scale = 1.0;
 806       break;
 807    case 24:
 808       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 809       break;
 810    default:
 811       assert(0);
 812       break;
 813    }
 814
 815    if (IS_965(intelScreen->deviceID))
 816       intel->polygon_offset_scale /= 0xffff;
 817
 818    intel->RenderIndex = ~0;
 819
 820    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 821    intel->irqsEmitted = 0;
 822
 823    intel->do_irqs = (intel->intelScreen->irq_active &&
 824                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 825
 826    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 827
 828    _math_matrix_ctr(&intel->ViewportMatrix);
 829
 830    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 831       _mesa_printf("IRQs not active.  Exiting\n");
 832       exit(1);
 833    }
 834
 835    intelInitExtensions(ctx, GL_FALSE);
 836
 837    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 838    if (INTEL_DEBUG & DEBUG_BUFMGR)
 839       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 840
 841    if (!sPriv->dri2.enabled)
 842       intel_recreate_static_regions(intel);
 843
 844    intel->batch = intel_batchbuffer_alloc(intel);
 845
 846    intel_bufferobj_init(intel);
 847    intel_fbo_init(intel);
 848
 849    if (intel->ctx.Mesa_DXTn) {
 850       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 851       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 852    }
 853    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 854       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 855    }
 856
 857    intel->prim.primitive = ~0;
 858
 859    /* Force all software fallbacks */
 860    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 861       fprintf(stderr, "disabling 3D rasterization\n");
 862       intel->no_rast = 1;
 863    }
 864
 865    /* Disable all hardware rendering (skip emitting batches and fences/waits
 866     * to the kernel)
 867     */
 868    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 869
 870    return GL_TRUE;
 871 }
 872
 873 void
 874 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 875 {
 876    struct intel_context *intel =
 877       (struct intel_context *) driContextPriv->driverPrivate;
 878
 879    assert(intel);               /* should never be null */
 880    if (intel) {
 881       GLboolean release_texture_heaps;
 882
 883       INTEL_FIREVERTICES(intel);
 884
 885       intel->vtbl.destroy(intel);
 886
 887       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 888       _swsetup_DestroyContext(&intel->ctx);
 889       _tnl_DestroyContext(&intel->ctx);
 890       _vbo_DestroyContext(&intel->ctx);
 891
 892       _swrast_DestroyContext(&intel->ctx);
 893       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 894
 895       intel_batchbuffer_free(intel->batch);
 896       free(intel->prim.vb);
 897
 898       if (release_texture_heaps) {
 899          /* This share group is about to go away, free our private
 900           * texture object data.
 901           */
 902          if (INTEL_DEBUG & DEBUG_TEXTURE)
 903             fprintf(stderr, "do something to free texture heaps\n");
 904       }
 905
 906       /* free the Mesa context */
 907       _mesa_free_context_data(&intel->ctx);
 908
 909       dri_bufmgr_destroy(intel->bufmgr);
 910    }
 911 }
 912
 913 GLboolean
 914 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 915 {
 916    return GL_TRUE;
 917 }
 918
 919 GLboolean
 920 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 921                  __DRIdrawablePrivate * driDrawPriv,
 922                  __DRIdrawablePrivate * driReadPriv)
 923 {
 924    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 925
 926    if (driContextPriv) {
 927       struct intel_context *intel =
 928          (struct intel_context *) driContextPriv->driverPrivate;
 929       struct intel_framebuffer *intel_fb =
 930          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 931       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 932
 933       if (driContextPriv->driScreenPriv->dri2.enabled) {
 934           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 935           if (driDrawPriv != driReadPriv)
 936               intel_update_renderbuffers(driContextPriv, driReadPriv);
 937       } else {
 938           /* XXX FBO temporary fix-ups! */
 939           /* if the renderbuffers don't have regions, init them from the context */
 940          struct intel_renderbuffer *irbDepth
 941             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 942          struct intel_renderbuffer *irbStencil
 943             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 944
 945          if (intel_fb->color_rb[0]) {
 946             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 947                                           intel->front_region);
 948          }
 949          if (intel_fb->color_rb[1]) {
 950             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 951                                           intel->back_region);
 952          }
 953 #if 0
 954          if (intel_fb->color_rb[2]) {
 955             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 956                                           intel->third_region);
 957          }
 958 #endif
 959          if (irbDepth) {
 960             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 961          }
 962          if (irbStencil) {
 963             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 964          }
 965       }
 966
 967       /* set GLframebuffer size to match window, if needed */
 968       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 969
 970       if (driReadPriv != driDrawPriv) {
 971          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 972       }
 973
 974       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 975
 976       /* The drawbuffer won't always be updated by _mesa_make_current:
 977        */
 978       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 979
 980          if (intel->driReadDrawable != driReadPriv)
 981             intel->driReadDrawable = driReadPriv;
 982
 983          if (intel->driDrawable != driDrawPriv) {
 984             if (driDrawPriv->swap_interval == (unsigned)-1) {
 985                int i;
 986
 987                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 988                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 989                  : VBLANK_FLAG_NO_IRQ;
 990
 991                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 992                driDrawableInitVBlank(driDrawPriv);
 993                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 994
 995                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 996                   if (intel_fb->color_rb[i])
 997                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 998                }
 999             }
1000             intel->driDrawable = driDrawPriv;
1001             intelWindowMoved(intel);
1002          }
1003
1004          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
1005       }
1006    }
1007    else {
1008       _mesa_make_current(NULL, NULL, NULL);
1009    }
1010
1011    return GL_TRUE;
1012 }
1013
1014 static void
1015 intelContendedLock(struct intel_context *intel, GLuint flags)
1016 {
1017    __DRIdrawablePrivate *dPriv = intel->driDrawable;
1018    __DRIscreenPrivate *sPriv = intel->driScreen;
1019    volatile struct drm_i915_sarea *sarea = intel->sarea;
1020    int me = intel->hHWContext;
1021
1022    drmGetLock(intel->driFd, intel->hHWContext, flags);
1023    intel->locked = 1;
1024
1025    if (INTEL_DEBUG & DEBUG_LOCK)
1026       _mesa_printf("%s - got contended lock\n", __progname);
1027
1028    /* If the window moved, may need to set a new cliprect now.
1029     *
1030     * NOTE: This releases and regains the hw lock, so all state
1031     * checking must be done *after* this call:
1032     */
1033    if (dPriv)
1034        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1035
1036    if (sarea && sarea->ctxOwner != me) {
1037       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1038          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1039                  sarea->ctxOwner, me);
1040       }
1041       sarea->ctxOwner = me;
1042    }
1043
1044    /* If the last consumer of the texture memory wasn't us, notify the fake
1045     * bufmgr and record the new owner.  We should have the memory shared
1046     * between contexts of a single fake bufmgr, but this will at least make
1047     * things correct for now.
1048     */
1049    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1050       sarea->texAge = intel->hHWContext;
1051       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1052       if (INTEL_DEBUG & DEBUG_BATCH)
1053          intel_decode_context_reset();
1054       if (INTEL_DEBUG & DEBUG_BUFMGR)
1055          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1056                  sarea->ctxOwner, intel->hHWContext);
1057    }
1058
1059    if (sarea->width != intel->width || sarea->height != intel->height) {
1060        int numClipRects = intel->numClipRects;
1061
1062        /*
1063         * FIXME: Really only need to do this when drawing to a
1064         * common back- or front buffer.
1065         */
1066
1067        /*
1068         * This will essentially drop the outstanding batchbuffer on
1069         * the floor.
1070         */
1071        intel->numClipRects = 0;
1072
1073        if (intel->Fallback)
1074            _swrast_flush(&intel->ctx);
1075
1076        if (!IS_965(intel->intelScreen->deviceID))
1077            INTEL_FIREVERTICES(intel);
1078
1079        if (intel->batch->map != intel->batch->ptr)
1080            intel_batchbuffer_flush(intel->batch);
1081
1082        intel->numClipRects = numClipRects;
1083
1084        /* force window update */
1085        intel->lastStamp = 0;
1086
1087        intel->width = sarea->width;
1088        intel->height = sarea->height;
1089    }
1090
1091    /* Drawable changed?
1092     */
1093    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1094        intelWindowMoved(intel);
1095        intel->lastStamp = dPriv->lastStamp;
1096    }
1097 }
1098
1099
1100 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1101
1102 /* Lock the hardware and validate our state.
1103  */
1104 void LOCK_HARDWARE( struct intel_context *intel )
1105 {
1106     __DRIdrawable *dPriv = intel->driDrawable;
1107     __DRIscreen *sPriv = intel->driScreen;
1108     char __ret = 0;
1109     struct intel_framebuffer *intel_fb = NULL;
1110     struct intel_renderbuffer *intel_rb = NULL;
1111
1112     _glthread_LOCK_MUTEX(lockMutex);
1113     assert(!intel->locked);
1114     intel->locked = 1;
1115
1116     if (intel->driDrawable) {
1117        intel_fb = intel->driDrawable->driverPrivate;
1118
1119        if (intel_fb)
1120           intel_rb =
1121              intel_get_renderbuffer(&intel_fb->Base,
1122                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1123     }
1124
1125     if (intel_rb && dPriv->vblFlags &&
1126         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1127         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1128         drmVBlank vbl;
1129
1130         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1131
1132         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1133             vbl.request.type |= DRM_VBLANK_SECONDARY;
1134         }
1135
1136         vbl.request.sequence = intel_rb->vbl_pending;
1137         drmWaitVBlank(intel->driFd, &vbl);
1138         intel_fb->vbl_waited = vbl.reply.sequence;
1139     }
1140
1141     if (!sPriv->dri2.enabled) {
1142         DRM_CAS(intel->driHwLock, intel->hHWContext,
1143                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1144
1145         if (__ret)
1146             intelContendedLock( intel, 0 );
1147     }
1148
1149
1150     if (INTEL_DEBUG & DEBUG_LOCK)
1151       _mesa_printf("%s - locked\n", __progname);
1152 }
1153
1154
1155 /* Unlock the hardware using the global current context
1156  */
1157 void UNLOCK_HARDWARE( struct intel_context *intel )
1158 {
1159     __DRIscreen *sPriv = intel->driScreen;
1160
1161    intel->vtbl.note_unlock( intel );
1162    intel->locked = 0;
1163
1164    if (!sPriv->dri2.enabled)
1165       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1166
1167    _glthread_UNLOCK_MUTEX(lockMutex);
1168
1169    if (INTEL_DEBUG & DEBUG_LOCK)
1170       _mesa_printf("%s - unlocked\n", __progname);
1171
1172    /**
1173     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1174     * cliprects.
1175     */
1176    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1177       intel_batchbuffer_flush(intel->batch);
1178 }
1179