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_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       default:
 183          chipset = "Unknown Intel Chipset";
 184          break;
 185       }
 186
 187       (void) driGetRendererString(buffer, chipset,
 188                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 189                                   0);
 190       return (GLubyte *) buffer;
 191
 192    default:
 193       return NULL;
 194    }
 195 }
 196
 197 void
 198 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 199 {
 200    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 201    struct intel_renderbuffer *rb;
 202    struct intel_region *region, *depth_region;
 203    struct intel_context *intel = context->driverPrivate;
 204    __DRIbuffer *buffers;
 205    __DRIscreen *screen;
 206    int i, count;
 207    unsigned int attachments[10];
 208    uint32_t name;
 209    const char *region_name;
 210
 211    if (INTEL_DEBUG & DEBUG_DRI)
 212       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 213
 214    screen = intel->intelScreen->driScrnPriv;
 215
 216    i = 0;
 217    if (intel_fb->color_rb[0])
 218       attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 219    if (intel_fb->color_rb[1])
 220       attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 221    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 222       attachments[i++] = __DRI_BUFFER_DEPTH;
 223    if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 224       attachments[i++] = __DRI_BUFFER_STENCIL;
 225
 226    buffers = (*screen->dri2.loader->getBuffers)(drawable,
 227                                                 &drawable->w,
 228                                                 &drawable->h,
 229                                                 attachments, i,
 230                                                 &count,
 231                                                 drawable->loaderPrivate);
 232
 233    drawable->x = 0;
 234    drawable->y = 0;
 235    drawable->backX = 0;
 236    drawable->backY = 0;
 237    drawable->numClipRects = 1;
 238    drawable->pClipRects[0].x1 = 0;
 239    drawable->pClipRects[0].y1 = 0;
 240    drawable->pClipRects[0].x2 = drawable->w;
 241    drawable->pClipRects[0].y2 = drawable->h;
 242    drawable->numBackClipRects = 1;
 243    drawable->pBackClipRects[0].x1 = 0;
 244    drawable->pBackClipRects[0].y1 = 0;
 245    drawable->pBackClipRects[0].x2 = drawable->w;
 246    drawable->pBackClipRects[0].y2 = drawable->h;
 247
 248    depth_region = NULL;
 249    for (i = 0; i < count; i++) {
 250        switch (buffers[i].attachment) {
 251        case __DRI_BUFFER_FRONT_LEFT:
 252            rb = intel_fb->color_rb[0];
 253            region_name = "dri2 front buffer";
 254            break;
 255
 256        case __DRI_BUFFER_BACK_LEFT:
 257            rb = intel_fb->color_rb[1];
 258            region_name = "dri2 back buffer";
 259            break;
 260
 261        case __DRI_BUFFER_DEPTH:
 262            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 263            region_name = "dri2 depth buffer";
 264            break;
 265
 266        case __DRI_BUFFER_STENCIL:
 267            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 268            region_name = "dri2 stencil buffer";
 269            break;
 270
 271        case __DRI_BUFFER_ACCUM:
 272        default:
 273            fprintf(stderr,
 274                    "unhandled buffer attach event, attacment type %d\n",
 275                    buffers[i].attachment);
 276            return;
 277        }
 278
 279        if (rb->region) {
 280           dri_bo_flink(rb->region->buffer, &name);
 281           if (name == buffers[i].name)
 282              continue;
 283        }
 284
 285        if (INTEL_DEBUG & DEBUG_DRI)
 286           fprintf(stderr,
 287                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 288                   buffers[i].name, buffers[i].attachment,
 289                   buffers[i].cpp, buffers[i].pitch);
 290
 291        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 292           if (INTEL_DEBUG & DEBUG_DRI)
 293              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 294           intel_region_reference(&region, depth_region);
 295        }
 296        else
 297           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 298                                                  buffers[i].pitch / buffers[i].cpp,
 299                                                  drawable->h,
 300                                                  buffers[i].name,
 301                                                  region_name);
 302
 303        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 304           depth_region = region;
 305
 306        intel_renderbuffer_set_region(rb, region);
 307        intel_region_release(&region);
 308    }
 309
 310    driUpdateFramebufferSize(&intel->ctx, drawable);
 311 }
 312
 313 static void
 314 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 315 {
 316     struct intel_context *intel = intel_context(ctx);
 317     __DRIcontext *driContext = intel->driContext;
 318
 319     if (!driContext->driScreenPriv->dri2.enabled)
 320         return;
 321
 322     intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 323     if (driContext->driDrawablePriv != driContext->driReadablePriv)
 324         intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 325
 326     ctx->Driver.Viewport = NULL;
 327     intel->driDrawable = driContext->driDrawablePriv;
 328     intelWindowMoved(intel);
 329     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 330     ctx->Driver.Viewport = intel_viewport;
 331 }
 332
 333 /**
 334  * Extension strings exported by the intel driver.
 335  *
 336  * Extensions supported by all chips supported by i830_dri, i915_dri, or
 337  * i965_dri.
 338  */
 339 static const struct dri_extension card_extensions[] = {
 340    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 341    {"GL_ARB_multitexture", NULL},
 342    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 343    {"GL_NV_point_sprite", GL_NV_point_sprite_functions},
 344    {"GL_ARB_texture_border_clamp", NULL},
 345    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 346    {"GL_ARB_texture_cube_map", NULL},
 347    {"GL_ARB_texture_env_add", NULL},
 348    {"GL_ARB_texture_env_combine", NULL},
 349    {"GL_ARB_texture_env_crossbar", NULL},
 350    {"GL_ARB_texture_env_dot3", NULL},
 351    {"GL_ARB_texture_mirrored_repeat", NULL},
 352    {"GL_ARB_texture_non_power_of_two",   NULL },
 353    {"GL_ARB_texture_rectangle", NULL},
 354    {"GL_NV_texture_rectangle", NULL},
 355    {"GL_EXT_texture_rectangle", NULL},
 356    {"GL_ARB_point_parameters", NULL},
 357    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 358    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 359    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 360    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 361    {"GL_EXT_blend_equation_separate",
 362     GL_EXT_blend_equation_separate_functions},
 363    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 364    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 365    {"GL_EXT_blend_logic_op", NULL},
 366    {"GL_EXT_blend_subtract", NULL},
 367    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 368    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 369    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 370    {"GL_ATI_separate_stencil", GL_ATI_separate_stencil_functions},
 371 #if 1                           /* XXX FBO temporary? */
 372    {"GL_EXT_packed_depth_stencil", NULL},
 373 #endif
 374    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 375    {"GL_EXT_stencil_wrap", NULL},
 376    {"GL_EXT_texture_edge_clamp", NULL},
 377    {"GL_EXT_texture_env_combine", NULL},
 378    {"GL_EXT_texture_env_dot3", NULL},
 379    {"GL_EXT_texture_filter_anisotropic", NULL},
 380    {"GL_EXT_texture_lod_bias", NULL},
 381    {"GL_3DFX_texture_compression_FXT1", NULL},
 382    {"GL_APPLE_client_storage", NULL},
 383    {"GL_MESA_pack_invert", NULL},
 384    {"GL_MESA_ycbcr_texture", NULL},
 385    {"GL_NV_blend_square", NULL},
 386    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 387    {"GL_NV_vertex_program1_1", NULL},
 388    { "GL_SGIS_generate_mipmap", NULL },
 389    {NULL, NULL}
 390 };
 391
 392 static const struct dri_extension brw_extensions[] = {
 393    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions},
 394    { "GL_ARB_shading_language_120",       GL_VERSION_2_1_functions},
 395    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions},
 396    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions},
 397    { "GL_ARB_point_sprite",               NULL},
 398    { "GL_ARB_fragment_shader",            NULL },
 399    { "GL_ARB_draw_buffers",               NULL },
 400    { "GL_ARB_depth_texture",              NULL },
 401    { "GL_ARB_fragment_program",           NULL },
 402    { "GL_ARB_shadow",                     NULL },
 403    { "GL_EXT_shadow_funcs",               NULL },
 404    { "GL_ARB_fragment_program_shadow",    NULL },
 405    /* ARB extn won't work if not enabled */
 406    { "GL_SGIX_depth_texture",             NULL },
 407    { "GL_EXT_texture_sRGB",               NULL},
 408    { NULL,                                NULL }
 409 };
 410
 411 #ifdef I915_MMIO_READ
 412 static const struct dri_extension arb_oc_extensions[] = {
 413    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 414    {NULL, NULL}
 415 };
 416 #endif
 417
 418 static const struct dri_extension ttm_extensions[] = {
 419    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 420    {"GL_ARB_pixel_buffer_object", NULL},
 421    {NULL, NULL}
 422 };
 423
 424 /**
 425  * Initializes potential list of extensions if ctx == NULL, or actually enables
 426  * extensions for a context.
 427  */
 428 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 429 {
 430    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 431
 432    /* Disable imaging extension until convolution is working in teximage paths.
 433     */
 434    enable_imaging = GL_FALSE;
 435
 436    driInitExtensions(ctx, card_extensions, enable_imaging);
 437
 438    if (intel == NULL || intel->ttm)
 439       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 440
 441 #ifdef I915_MMIO_READ
 442    if (intel == NULL ||
 443        (IS_965(intel->intelScreen->deviceID) &&
 444         intel->intelScreen->drmMinor >= 8))
 445       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 446 #endif
 447
 448    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 449       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 450 }
 451
 452 static const struct dri_debug_control debug_control[] = {
 453    { "tex",   DEBUG_TEXTURE},
 454    { "state", DEBUG_STATE},
 455    { "ioctl", DEBUG_IOCTL},
 456    { "blit",  DEBUG_BLIT},
 457    { "mip",   DEBUG_MIPTREE},
 458    { "fall",  DEBUG_FALLBACKS},
 459    { "verb",  DEBUG_VERBOSE},
 460    { "bat",   DEBUG_BATCH},
 461    { "pix",   DEBUG_PIXEL},
 462    { "buf",   DEBUG_BUFMGR},
 463    { "reg",   DEBUG_REGION},
 464    { "fbo",   DEBUG_FBO},
 465    { "lock",  DEBUG_LOCK},
 466    { "sync",  DEBUG_SYNC},
 467    { "prim",  DEBUG_PRIMS },
 468    { "vert",  DEBUG_VERTS },
 469    { "dri",   DEBUG_DRI },
 470    { "dma",   DEBUG_DMA },
 471    { "san",   DEBUG_SANITY },
 472    { "sleep", DEBUG_SLEEP },
 473    { "stats", DEBUG_STATS },
 474    { "tile",  DEBUG_TILE },
 475    { "sing",  DEBUG_SINGLE_THREAD },
 476    { "thre",  DEBUG_SINGLE_THREAD },
 477    { "wm",    DEBUG_WM },
 478    { "urb",   DEBUG_URB },
 479    { "vs",    DEBUG_VS },
 480    { NULL,    0 }
 481 };
 482
 483
 484 static void
 485 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 486 {
 487     struct intel_context *intel = intel_context(ctx);
 488
 489    _swrast_InvalidateState(ctx, new_state);
 490    _swsetup_InvalidateState(ctx, new_state);
 491    _vbo_InvalidateState(ctx, new_state);
 492    _tnl_InvalidateState(ctx, new_state);
 493    _tnl_invalidate_vertex_state(ctx, new_state);
 494
 495    intel->NewGLState |= new_state;
 496
 497    if (intel->vtbl.invalidate_state)
 498       intel->vtbl.invalidate_state( intel, new_state );
 499 }
 500
 501
 502 void
 503 intelFlush(GLcontext * ctx)
 504 {
 505    struct intel_context *intel = intel_context(ctx);
 506
 507    if (intel->Fallback)
 508       _swrast_flush(ctx);
 509
 510    if (!IS_965(intel->intelScreen->deviceID))
 511       INTEL_FIREVERTICES(intel);
 512
 513    /* Emit a flush so that any frontbuffer rendering that might have occurred
 514     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 515     * a flush for us.
 516     */
 517    intel_batchbuffer_emit_mi_flush(intel->batch);
 518
 519    if (intel->batch->map != intel->batch->ptr)
 520       intel_batchbuffer_flush(intel->batch);
 521 }
 522
 523 void
 524 intelFinish(GLcontext * ctx)
 525 {
 526    struct gl_framebuffer *fb = ctx->DrawBuffer;
 527    int i;
 528
 529    intelFlush(ctx);
 530
 531    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 532        struct intel_renderbuffer *irb;
 533
 534        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 535
 536        if (irb->region)
 537           dri_bo_wait_rendering(irb->region->buffer);
 538    }
 539    if (fb->_DepthBuffer) {
 540       /* XXX: Wait on buffer idle */
 541    }
 542 }
 543
 544 #ifdef I915_MMIO_READ
 545 static void
 546 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 547 {
 548         struct intel_context *intel = intel_context( ctx );
 549         struct drm_i915_mmio io = {
 550                 .read_write = I915_MMIO_READ,
 551                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 552                 .data = &q->Result
 553         };
 554         intel->stats_wm++;
 555         intelFinish(&intel->ctx);
 556         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 557 }
 558
 559 static void
 560 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 561 {
 562         struct intel_context *intel = intel_context( ctx );
 563         GLuint64EXT tmp;
 564         struct drm_i915_mmio io = {
 565                 .read_write = I915_MMIO_READ,
 566                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 567                 .data = &tmp
 568         };
 569         intelFinish(&intel->ctx);
 570         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 571         q->Result = tmp - q->Result;
 572         q->Ready = GL_TRUE;
 573         intel->stats_wm--;
 574 }
 575 #endif
 576
 577 void
 578 intelInitDriverFunctions(struct dd_function_table *functions)
 579 {
 580    _mesa_init_driver_functions(functions);
 581
 582    functions->Flush = intelFlush;
 583    functions->Finish = intelFinish;
 584    functions->GetString = intelGetString;
 585    functions->UpdateState = intelInvalidateState;
 586    functions->Viewport = intel_viewport;
 587
 588    functions->CopyColorTable = _swrast_CopyColorTable;
 589    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 590    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 591    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 592
 593 #ifdef I915_MMIO_READ
 594    functions->BeginQuery = intelBeginQuery;
 595    functions->EndQuery = intelEndQuery;
 596 #endif
 597
 598    intelInitTextureFuncs(functions);
 599    intelInitStateFuncs(functions);
 600    intelInitBufferFuncs(functions);
 601    intelInitPixelFuncs(functions);
 602 }
 603
 604
 605 GLboolean
 606 intelInitContext(struct intel_context *intel,
 607                  const __GLcontextModes * mesaVis,
 608                  __DRIcontextPrivate * driContextPriv,
 609                  void *sharedContextPrivate,
 610                  struct dd_function_table *functions)
 611 {
 612    GLcontext *ctx = &intel->ctx;
 613    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 614    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 615    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 616    int fthrottle_mode;
 617
 618    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 619                                  functions, (void *) intel)) {
 620       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 621       return GL_FALSE;
 622    }
 623
 624    driContextPriv->driverPrivate = intel;
 625    intel->intelScreen = intelScreen;
 626    intel->driScreen = sPriv;
 627    intel->sarea = intelScreen->sarea;
 628    intel->driContext = driContextPriv;
 629
 630    /* Dri stuff */
 631    intel->hHWContext = driContextPriv->hHWContext;
 632    intel->driFd = sPriv->fd;
 633    intel->driHwLock = sPriv->lock;
 634
 635    intel->width = intelScreen->width;
 636    intel->height = intelScreen->height;
 637
 638    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 639                        intel->driScreen->myNum,
 640                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 641    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 642       intel->maxBatchSize = 4096;
 643    else
 644       intel->maxBatchSize = BATCH_SZ;
 645
 646    intel->bufmgr = intelScreen->bufmgr;
 647    intel->ttm = intelScreen->ttm;
 648    if (intel->ttm) {
 649       int bo_reuse_mode;
 650
 651       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 652       switch (bo_reuse_mode) {
 653       case DRI_CONF_BO_REUSE_DISABLED:
 654          break;
 655       case DRI_CONF_BO_REUSE_ALL:
 656          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 657          break;
 658       }
 659    }
 660
 661    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 662
 663    /* This doesn't yet catch all non-conformant rendering, but it's a
 664     * start.
 665     */
 666    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 667       intel->strict_conformance = 1;
 668    }
 669
 670    if (intel->strict_conformance) {
 671       ctx->Const.MinLineWidth = 1.0;
 672       ctx->Const.MinLineWidthAA = 1.0;
 673       ctx->Const.MaxLineWidth = 1.0;
 674       ctx->Const.MaxLineWidthAA = 1.0;
 675       ctx->Const.LineWidthGranularity = 1.0;
 676    }
 677    else {
 678       ctx->Const.MinLineWidth = 1.0;
 679       ctx->Const.MinLineWidthAA = 1.0;
 680       ctx->Const.MaxLineWidth = 5.0;
 681       ctx->Const.MaxLineWidthAA = 5.0;
 682       ctx->Const.LineWidthGranularity = 0.5;
 683    }
 684
 685    ctx->Const.MinPointSize = 1.0;
 686    ctx->Const.MinPointSizeAA = 1.0;
 687    ctx->Const.MaxPointSize = 255.0;
 688    ctx->Const.MaxPointSizeAA = 3.0;
 689    ctx->Const.PointSizeGranularity = 1.0;
 690
 691    /* reinitialize the context point state.
 692     * It depend on constants in __GLcontextRec::Const
 693     */
 694    _mesa_init_point(ctx);
 695
 696    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 697
 698    /* Initialize the software rasterizer and helper modules. */
 699    _swrast_CreateContext(ctx);
 700    _vbo_CreateContext(ctx);
 701    _tnl_CreateContext(ctx);
 702    _swsetup_CreateContext(ctx);
 703
 704    /* Configure swrast to match hardware characteristics: */
 705    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 706    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 707
 708    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 709    intel->hw_stipple = 1;
 710
 711    /* XXX FBO: this doesn't seem to be used anywhere */
 712    switch (mesaVis->depthBits) {
 713    case 0:                     /* what to do in this case? */
 714    case 16:
 715       intel->polygon_offset_scale = 1.0;
 716       break;
 717    case 24:
 718       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 719       break;
 720    default:
 721       assert(0);
 722       break;
 723    }
 724
 725    if (IS_965(intelScreen->deviceID))
 726       intel->polygon_offset_scale /= 0xffff;
 727
 728    intel->RenderIndex = ~0;
 729
 730    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 731    intel->irqsEmitted = 0;
 732
 733    intel->do_irqs = (intel->intelScreen->irq_active &&
 734                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 735
 736    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 737
 738    _math_matrix_ctr(&intel->ViewportMatrix);
 739
 740    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 741       _mesa_printf("IRQs not active.  Exiting\n");
 742       exit(1);
 743    }
 744
 745    intelInitExtensions(ctx, GL_FALSE);
 746
 747    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 748    if (INTEL_DEBUG & DEBUG_BUFMGR)
 749       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 750
 751    if (!sPriv->dri2.enabled)
 752       intel_recreate_static_regions(intel);
 753
 754    intel->batch = intel_batchbuffer_alloc(intel);
 755
 756    intel_bufferobj_init(intel);
 757    intel_fbo_init(intel);
 758
 759    if (intel->ctx.Mesa_DXTn) {
 760       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 761       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 762    }
 763    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 764       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 765    }
 766
 767    intel->prim.primitive = ~0;
 768
 769    /* Force all software fallbacks */
 770    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 771       fprintf(stderr, "disabling 3D rasterization\n");
 772       intel->no_rast = 1;
 773    }
 774
 775    /* Disable all hardware rendering (skip emitting batches and fences/waits
 776     * to the kernel)
 777     */
 778    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 779
 780    return GL_TRUE;
 781 }
 782
 783 void
 784 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 785 {
 786    struct intel_context *intel =
 787       (struct intel_context *) driContextPriv->driverPrivate;
 788
 789    assert(intel);               /* should never be null */
 790    if (intel) {
 791       GLboolean release_texture_heaps;
 792
 793       INTEL_FIREVERTICES(intel);
 794
 795       intel->vtbl.destroy(intel);
 796
 797       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 798       _swsetup_DestroyContext(&intel->ctx);
 799       _tnl_DestroyContext(&intel->ctx);
 800       _vbo_DestroyContext(&intel->ctx);
 801
 802       _swrast_DestroyContext(&intel->ctx);
 803       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 804
 805       intel_batchbuffer_free(intel->batch);
 806       free(intel->prim.vb);
 807
 808       if (release_texture_heaps) {
 809          /* This share group is about to go away, free our private
 810           * texture object data.
 811           */
 812          if (INTEL_DEBUG & DEBUG_TEXTURE)
 813             fprintf(stderr, "do something to free texture heaps\n");
 814       }
 815
 816       /* free the Mesa context */
 817       _mesa_free_context_data(&intel->ctx);
 818
 819       dri_bufmgr_destroy(intel->bufmgr);
 820    }
 821 }
 822
 823 GLboolean
 824 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 825 {
 826    return GL_TRUE;
 827 }
 828
 829 GLboolean
 830 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 831                  __DRIdrawablePrivate * driDrawPriv,
 832                  __DRIdrawablePrivate * driReadPriv)
 833 {
 834    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 835
 836    if (driContextPriv) {
 837       struct intel_context *intel =
 838          (struct intel_context *) driContextPriv->driverPrivate;
 839       struct intel_framebuffer *intel_fb =
 840          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 841       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 842
 843       if (driContextPriv->driScreenPriv->dri2.enabled) {
 844           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 845           if (driDrawPriv != driReadPriv)
 846               intel_update_renderbuffers(driContextPriv, driReadPriv);
 847       } else {
 848           /* XXX FBO temporary fix-ups! */
 849           /* if the renderbuffers don't have regions, init them from the context */
 850          struct intel_renderbuffer *irbDepth
 851             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 852          struct intel_renderbuffer *irbStencil
 853             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 854
 855          if (intel_fb->color_rb[0]) {
 856             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 857                                           intel->front_region);
 858          }
 859          if (intel_fb->color_rb[1]) {
 860             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 861                                           intel->back_region);
 862          }
 863 #if 0
 864          if (intel_fb->color_rb[2]) {
 865             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 866                                           intel->third_region);
 867          }
 868 #endif
 869          if (irbDepth) {
 870             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 871          }
 872          if (irbStencil) {
 873             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 874          }
 875       }
 876
 877       /* set GLframebuffer size to match window, if needed */
 878       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 879
 880       if (driReadPriv != driDrawPriv) {
 881          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 882       }
 883
 884       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 885
 886       /* The drawbuffer won't always be updated by _mesa_make_current:
 887        */
 888       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 889
 890          if (intel->driReadDrawable != driReadPriv)
 891             intel->driReadDrawable = driReadPriv;
 892
 893          if (intel->driDrawable != driDrawPriv) {
 894             if (driDrawPriv->swap_interval == (unsigned)-1) {
 895                int i;
 896
 897                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 898                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 899                  : VBLANK_FLAG_NO_IRQ;
 900
 901                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 902                driDrawableInitVBlank(driDrawPriv);
 903                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 904
 905                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 906                   if (intel_fb->color_rb[i])
 907                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 908                }
 909             }
 910             intel->driDrawable = driDrawPriv;
 911             intelWindowMoved(intel);
 912          }
 913
 914          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 915       }
 916    }
 917    else {
 918       _mesa_make_current(NULL, NULL, NULL);
 919    }
 920
 921    return GL_TRUE;
 922 }
 923
 924 static void
 925 intelContendedLock(struct intel_context *intel, GLuint flags)
 926 {
 927    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 928    __DRIscreenPrivate *sPriv = intel->driScreen;
 929    volatile struct drm_i915_sarea *sarea = intel->sarea;
 930    int me = intel->hHWContext;
 931
 932    drmGetLock(intel->driFd, intel->hHWContext, flags);
 933    intel->locked = 1;
 934
 935    if (INTEL_DEBUG & DEBUG_LOCK)
 936       _mesa_printf("%s - got contended lock\n", __progname);
 937
 938    /* If the window moved, may need to set a new cliprect now.
 939     *
 940     * NOTE: This releases and regains the hw lock, so all state
 941     * checking must be done *after* this call:
 942     */
 943    if (dPriv)
 944        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 945
 946    if (sarea && sarea->ctxOwner != me) {
 947       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 948          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 949                  sarea->ctxOwner, me);
 950       }
 951       sarea->ctxOwner = me;
 952    }
 953
 954    /* If the last consumer of the texture memory wasn't us, notify the fake
 955     * bufmgr and record the new owner.  We should have the memory shared
 956     * between contexts of a single fake bufmgr, but this will at least make
 957     * things correct for now.
 958     */
 959    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 960       sarea->texAge = intel->hHWContext;
 961       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 962       if (INTEL_DEBUG & DEBUG_BATCH)
 963          intel_decode_context_reset();
 964       if (INTEL_DEBUG & DEBUG_BUFMGR)
 965          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 966                  sarea->ctxOwner, intel->hHWContext);
 967    }
 968
 969    if (sarea->width != intel->width || sarea->height != intel->height) {
 970        int numClipRects = intel->numClipRects;
 971
 972        /*
 973         * FIXME: Really only need to do this when drawing to a
 974         * common back- or front buffer.
 975         */
 976
 977        /*
 978         * This will essentially drop the outstanding batchbuffer on
 979         * the floor.
 980         */
 981        intel->numClipRects = 0;
 982
 983        if (intel->Fallback)
 984            _swrast_flush(&intel->ctx);
 985
 986        if (!IS_965(intel->intelScreen->deviceID))
 987            INTEL_FIREVERTICES(intel);
 988
 989        if (intel->batch->map != intel->batch->ptr)
 990            intel_batchbuffer_flush(intel->batch);
 991
 992        intel->numClipRects = numClipRects;
 993
 994        /* force window update */
 995        intel->lastStamp = 0;
 996
 997        intel->width = sarea->width;
 998        intel->height = sarea->height;
 999    }
1000
1001    /* Drawable changed?
1002     */
1003    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1004        intelWindowMoved(intel);
1005        intel->lastStamp = dPriv->lastStamp;
1006    }
1007 }
1008
1009
1010 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1011
1012 /* Lock the hardware and validate our state.
1013  */
1014 void LOCK_HARDWARE( struct intel_context *intel )
1015 {
1016     __DRIdrawable *dPriv = intel->driDrawable;
1017     __DRIscreen *sPriv = intel->driScreen;
1018     char __ret = 0;
1019     struct intel_framebuffer *intel_fb = NULL;
1020     struct intel_renderbuffer *intel_rb = NULL;
1021
1022     _glthread_LOCK_MUTEX(lockMutex);
1023     assert(!intel->locked);
1024     intel->locked = 1;
1025
1026     if (intel->driDrawable) {
1027        intel_fb = intel->driDrawable->driverPrivate;
1028
1029        if (intel_fb)
1030           intel_rb =
1031              intel_get_renderbuffer(&intel_fb->Base,
1032                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1033     }
1034
1035     if (intel_rb && dPriv->vblFlags &&
1036         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1037         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1038         drmVBlank vbl;
1039
1040         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1041
1042         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1043             vbl.request.type |= DRM_VBLANK_SECONDARY;
1044         }
1045
1046         vbl.request.sequence = intel_rb->vbl_pending;
1047         drmWaitVBlank(intel->driFd, &vbl);
1048         intel_fb->vbl_waited = vbl.reply.sequence;
1049     }
1050
1051     if (!sPriv->dri2.enabled) {
1052         DRM_CAS(intel->driHwLock, intel->hHWContext,
1053                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1054
1055         if (__ret)
1056             intelContendedLock( intel, 0 );
1057     }
1058
1059
1060     if (INTEL_DEBUG & DEBUG_LOCK)
1061       _mesa_printf("%s - locked\n", __progname);
1062 }
1063
1064
1065 /* Unlock the hardware using the global current context
1066  */
1067 void UNLOCK_HARDWARE( struct intel_context *intel )
1068 {
1069     __DRIscreen *sPriv = intel->driScreen;
1070
1071    intel->vtbl.note_unlock( intel );
1072    intel->locked = 0;
1073
1074    if (!sPriv->dri2.enabled)
1075       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1076
1077    _glthread_UNLOCK_MUTEX(lockMutex);
1078
1079    if (INTEL_DEBUG & DEBUG_LOCK)
1080       _mesa_printf("%s - unlocked\n", __progname);
1081
1082    /**
1083     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1084     * cliprects.
1085     */
1086    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1087       intel_batchbuffer_flush(intel->batch);
1088 }
1089