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           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 static const struct dri_extension arb_oc_extensions[] = {
 413    {"GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions},
 414    {NULL, NULL}
 415 };
 416
 417 static const struct dri_extension ttm_extensions[] = {
 418    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 419    {"GL_ARB_pixel_buffer_object", NULL},
 420    {NULL, NULL}
 421 };
 422
 423 /**
 424  * Initializes potential list of extensions if ctx == NULL, or actually enables
 425  * extensions for a context.
 426  */
 427 void intelInitExtensions(GLcontext *ctx, GLboolean enable_imaging)
 428 {
 429    struct intel_context *intel = ctx?intel_context(ctx):NULL;
 430
 431    /* Disable imaging extension until convolution is working in teximage paths.
 432     */
 433    enable_imaging = GL_FALSE;
 434
 435    driInitExtensions(ctx, card_extensions, enable_imaging);
 436
 437    if (intel == NULL || intel->ttm)
 438       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 439
 440    if (intel == NULL ||
 441        (IS_965(intel->intelScreen->deviceID) &&
 442         intel->intelScreen->drmMinor >= 8))
 443       driInitExtensions(ctx, arb_oc_extensions, GL_FALSE);
 444
 445    if (intel == NULL || IS_965(intel->intelScreen->deviceID))
 446       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 447 }
 448
 449 static const struct dri_debug_control debug_control[] = {
 450    { "tex",   DEBUG_TEXTURE},
 451    { "state", DEBUG_STATE},
 452    { "ioctl", DEBUG_IOCTL},
 453    { "blit",  DEBUG_BLIT},
 454    { "mip",   DEBUG_MIPTREE},
 455    { "fall",  DEBUG_FALLBACKS},
 456    { "verb",  DEBUG_VERBOSE},
 457    { "bat",   DEBUG_BATCH},
 458    { "pix",   DEBUG_PIXEL},
 459    { "buf",   DEBUG_BUFMGR},
 460    { "reg",   DEBUG_REGION},
 461    { "fbo",   DEBUG_FBO},
 462    { "lock",  DEBUG_LOCK},
 463    { "sync",  DEBUG_SYNC},
 464    { "prim",  DEBUG_PRIMS },
 465    { "vert",  DEBUG_VERTS },
 466    { "dri",   DEBUG_DRI },
 467    { "dma",   DEBUG_DMA },
 468    { "san",   DEBUG_SANITY },
 469    { "sleep", DEBUG_SLEEP },
 470    { "stats", DEBUG_STATS },
 471    { "tile",  DEBUG_TILE },
 472    { "sing",  DEBUG_SINGLE_THREAD },
 473    { "thre",  DEBUG_SINGLE_THREAD },
 474    { "wm",    DEBUG_WM },
 475    { "urb",   DEBUG_URB },
 476    { "vs",    DEBUG_VS },
 477    { NULL,    0 }
 478 };
 479
 480
 481 static void
 482 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 483 {
 484     struct intel_context *intel = intel_context(ctx);
 485
 486    _swrast_InvalidateState(ctx, new_state);
 487    _swsetup_InvalidateState(ctx, new_state);
 488    _vbo_InvalidateState(ctx, new_state);
 489    _tnl_InvalidateState(ctx, new_state);
 490    _tnl_invalidate_vertex_state(ctx, new_state);
 491
 492    intel->NewGLState |= new_state;
 493
 494    if (intel->vtbl.invalidate_state)
 495       intel->vtbl.invalidate_state( intel, new_state );
 496 }
 497
 498
 499 void
 500 intelFlush(GLcontext * ctx)
 501 {
 502    struct intel_context *intel = intel_context(ctx);
 503
 504    if (intel->Fallback)
 505       _swrast_flush(ctx);
 506
 507    if (!IS_965(intel->intelScreen->deviceID))
 508       INTEL_FIREVERTICES(intel);
 509
 510    /* Emit a flush so that any frontbuffer rendering that might have occurred
 511     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 512     * a flush for us.
 513     */
 514    intel_batchbuffer_emit_mi_flush(intel->batch);
 515
 516    if (intel->batch->map != intel->batch->ptr)
 517       intel_batchbuffer_flush(intel->batch);
 518 }
 519
 520 void
 521 intelFinish(GLcontext * ctx)
 522 {
 523    struct gl_framebuffer *fb = ctx->DrawBuffer;
 524    int i;
 525
 526    intelFlush(ctx);
 527
 528    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 529        struct intel_renderbuffer *irb;
 530
 531        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 532
 533        if (irb->region)
 534           dri_bo_wait_rendering(irb->region->buffer);
 535    }
 536    if (fb->_DepthBuffer) {
 537       /* XXX: Wait on buffer idle */
 538    }
 539 }
 540
 541 static void
 542 intelBeginQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 543 {
 544         struct intel_context *intel = intel_context( ctx );
 545         struct drm_i915_mmio io = {
 546                 .read_write = I915_MMIO_READ,
 547                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 548                 .data = &q->Result
 549         };
 550         intel->stats_wm++;
 551         intelFinish(&intel->ctx);
 552         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 553 }
 554
 555 static void
 556 intelEndQuery(GLcontext *ctx, GLenum target, struct gl_query_object *q)
 557 {
 558         struct intel_context *intel = intel_context( ctx );
 559         GLuint64EXT tmp;
 560         struct drm_i915_mmio io = {
 561                 .read_write = I915_MMIO_READ,
 562                 .reg = MMIO_REGS_PS_DEPTH_COUNT,
 563                 .data = &tmp
 564         };
 565         intelFinish(&intel->ctx);
 566         drmCommandWrite(intel->driFd, DRM_I915_MMIO, &io, sizeof(io));
 567         q->Result = tmp - q->Result;
 568         q->Ready = GL_TRUE;
 569         intel->stats_wm--;
 570 }
 571
 572 /** Driver-specific fence emit implementation for the fake memory manager. */
 573 static unsigned int
 574 intel_fence_emit(void *private)
 575 {
 576    struct intel_context *intel = (struct intel_context *)private;
 577    unsigned int fence;
 578
 579    /* XXX: Need to emit a flush, if we haven't already (at least with the
 580     * current batchbuffer implementation, we have).
 581     */
 582
 583    fence = intelEmitIrqLocked(intel);
 584
 585    return fence;
 586 }
 587
 588 /** Driver-specific fence wait implementation for the fake memory manager. */
 589 static int
 590 intel_fence_wait(void *private, unsigned int cookie)
 591 {
 592    struct intel_context *intel = (struct intel_context *)private;
 593
 594    intelWaitIrq(intel, cookie);
 595
 596    return 0;
 597 }
 598
 599 static GLboolean
 600 intel_init_bufmgr(struct intel_context *intel)
 601 {
 602    intelScreenPrivate *intelScreen = intel->intelScreen;
 603    GLboolean gem_disable = getenv("INTEL_NO_GEM") != NULL;
 604    int gem_kernel = 0;
 605    GLboolean gem_supported;
 606    struct drm_i915_getparam gp;
 607
 608    gp.param = I915_PARAM_HAS_GEM;
 609    gp.value = &gem_kernel;
 610
 611    (void) drmCommandWriteRead(intel->driFd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 612
 613    /* If we've got a new enough DDX that's initializing GEM and giving us
 614     * object handles for the shared buffers, use that.
 615     */
 616    intel->ttm = GL_FALSE;
 617    if (intel->intelScreen->driScrnPriv->dri2.enabled)
 618        gem_supported = GL_TRUE;
 619    else if (intel->intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 620             gem_kernel &&
 621             intel->intelScreen->front.bo_handle != -1)
 622        gem_supported = GL_TRUE;
 623    else
 624        gem_supported = GL_FALSE;
 625
 626    if (!gem_disable && gem_supported) {
 627       int bo_reuse_mode;
 628       intel->bufmgr = intel_bufmgr_gem_init(intel->driFd,
 629                                             BATCH_SZ);
 630       if (intel->bufmgr != NULL)
 631          intel->ttm = GL_TRUE;
 632
 633       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 634       switch (bo_reuse_mode) {
 635       case DRI_CONF_BO_REUSE_DISABLED:
 636          break;
 637       case DRI_CONF_BO_REUSE_ALL:
 638          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 639          break;
 640       }
 641    }
 642    /* Otherwise, use the classic buffer manager. */
 643    if (intel->bufmgr == NULL) {
 644       if (gem_disable) {
 645          fprintf(stderr, "GEM disabled.  Using classic.\n");
 646       } else {
 647          fprintf(stderr, "Failed to initialize GEM.  "
 648                  "Falling back to classic.\n");
 649       }
 650
 651       if (intelScreen->tex.size == 0) {
 652          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 653                  __func__, __LINE__);
 654          return GL_FALSE;
 655       }
 656
 657       intel->bufmgr = intel_bufmgr_fake_init(intelScreen->tex.offset,
 658                                              intelScreen->tex.map,
 659                                              intelScreen->tex.size,
 660                                              intel_fence_emit,
 661                                              intel_fence_wait,
 662                                              intel);
 663    }
 664
 665    /* XXX bufmgr should be per-screen, not per-context */
 666    intelScreen->ttm = intel->ttm;
 667
 668    return GL_TRUE;
 669 }
 670
 671 void
 672 intelInitDriverFunctions(struct dd_function_table *functions)
 673 {
 674    _mesa_init_driver_functions(functions);
 675
 676    functions->Flush = intelFlush;
 677    functions->Finish = intelFinish;
 678    functions->GetString = intelGetString;
 679    functions->UpdateState = intelInvalidateState;
 680    functions->Viewport = intel_viewport;
 681
 682    functions->CopyColorTable = _swrast_CopyColorTable;
 683    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 684    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 685    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 686
 687    functions->BeginQuery = intelBeginQuery;
 688    functions->EndQuery = intelEndQuery;
 689
 690    intelInitTextureFuncs(functions);
 691    intelInitStateFuncs(functions);
 692    intelInitBufferFuncs(functions);
 693    intelInitPixelFuncs(functions);
 694 }
 695
 696
 697 GLboolean
 698 intelInitContext(struct intel_context *intel,
 699                  const __GLcontextModes * mesaVis,
 700                  __DRIcontextPrivate * driContextPriv,
 701                  void *sharedContextPrivate,
 702                  struct dd_function_table *functions)
 703 {
 704    GLcontext *ctx = &intel->ctx;
 705    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 706    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 707    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 708    volatile struct drm_i915_sarea *saPriv = (struct drm_i915_sarea *)
 709       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 710    int fthrottle_mode;
 711
 712    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 713                                  functions, (void *) intel)) {
 714       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 715       return GL_FALSE;
 716    }
 717
 718    driContextPriv->driverPrivate = intel;
 719    intel->intelScreen = intelScreen;
 720    intel->driScreen = sPriv;
 721    intel->sarea = saPriv;
 722    intel->driContext = driContextPriv;
 723
 724    /* Dri stuff */
 725    intel->hHWContext = driContextPriv->hHWContext;
 726    intel->driFd = sPriv->fd;
 727    intel->driHwLock = sPriv->lock;
 728
 729    intel->width = intelScreen->width;
 730    intel->height = intelScreen->height;
 731
 732    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 733                        intel->driScreen->myNum,
 734                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 735    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 736       intel->maxBatchSize = 4096;
 737    else
 738       intel->maxBatchSize = BATCH_SZ;
 739
 740    if (!intel_init_bufmgr(intel))
 741       return GL_FALSE;
 742
 743    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 744
 745    /* This doesn't yet catch all non-conformant rendering, but it's a
 746     * start.
 747     */
 748    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 749       intel->strict_conformance = 1;
 750    }
 751
 752    if (intel->strict_conformance) {
 753       ctx->Const.MinLineWidth = 1.0;
 754       ctx->Const.MinLineWidthAA = 1.0;
 755       ctx->Const.MaxLineWidth = 1.0;
 756       ctx->Const.MaxLineWidthAA = 1.0;
 757       ctx->Const.LineWidthGranularity = 1.0;
 758    }
 759    else {
 760       ctx->Const.MinLineWidth = 1.0;
 761       ctx->Const.MinLineWidthAA = 1.0;
 762       ctx->Const.MaxLineWidth = 5.0;
 763       ctx->Const.MaxLineWidthAA = 5.0;
 764       ctx->Const.LineWidthGranularity = 0.5;
 765    }
 766
 767    ctx->Const.MinPointSize = 1.0;
 768    ctx->Const.MinPointSizeAA = 1.0;
 769    ctx->Const.MaxPointSize = 255.0;
 770    ctx->Const.MaxPointSizeAA = 3.0;
 771    ctx->Const.PointSizeGranularity = 1.0;
 772
 773    /* reinitialize the context point state.
 774     * It depend on constants in __GLcontextRec::Const
 775     */
 776    _mesa_init_point(ctx);
 777
 778    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 779
 780    /* Initialize the software rasterizer and helper modules. */
 781    _swrast_CreateContext(ctx);
 782    _vbo_CreateContext(ctx);
 783    _tnl_CreateContext(ctx);
 784    _swsetup_CreateContext(ctx);
 785
 786    /* Configure swrast to match hardware characteristics: */
 787    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 788    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 789
 790    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 791    intel->hw_stipple = 1;
 792
 793    /* XXX FBO: this doesn't seem to be used anywhere */
 794    switch (mesaVis->depthBits) {
 795    case 0:                     /* what to do in this case? */
 796    case 16:
 797       intel->polygon_offset_scale = 1.0;
 798       break;
 799    case 24:
 800       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 801       break;
 802    default:
 803       assert(0);
 804       break;
 805    }
 806
 807    if (IS_965(intelScreen->deviceID))
 808       intel->polygon_offset_scale /= 0xffff;
 809
 810    intel->RenderIndex = ~0;
 811
 812    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 813    intel->irqsEmitted = 0;
 814
 815    intel->do_irqs = (intel->intelScreen->irq_active &&
 816                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 817
 818    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 819
 820    _math_matrix_ctr(&intel->ViewportMatrix);
 821
 822    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 823       _mesa_printf("IRQs not active.  Exiting\n");
 824       exit(1);
 825    }
 826
 827    intelInitExtensions(ctx, GL_FALSE);
 828
 829    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 830    if (INTEL_DEBUG & DEBUG_BUFMGR)
 831       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 832
 833    if (!sPriv->dri2.enabled)
 834       intel_recreate_static_regions(intel);
 835
 836    intel->batch = intel_batchbuffer_alloc(intel);
 837
 838    intel_bufferobj_init(intel);
 839    intel_fbo_init(intel);
 840
 841    if (intel->ctx.Mesa_DXTn) {
 842       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 843       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 844    }
 845    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 846       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 847    }
 848
 849    intel->prim.primitive = ~0;
 850
 851    /* Force all software fallbacks */
 852    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 853       fprintf(stderr, "disabling 3D rasterization\n");
 854       intel->no_rast = 1;
 855    }
 856
 857    /* Disable all hardware rendering (skip emitting batches and fences/waits
 858     * to the kernel)
 859     */
 860    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 861
 862    return GL_TRUE;
 863 }
 864
 865 void
 866 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 867 {
 868    struct intel_context *intel =
 869       (struct intel_context *) driContextPriv->driverPrivate;
 870
 871    assert(intel);               /* should never be null */
 872    if (intel) {
 873       GLboolean release_texture_heaps;
 874
 875       INTEL_FIREVERTICES(intel);
 876
 877       intel->vtbl.destroy(intel);
 878
 879       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 880       _swsetup_DestroyContext(&intel->ctx);
 881       _tnl_DestroyContext(&intel->ctx);
 882       _vbo_DestroyContext(&intel->ctx);
 883
 884       _swrast_DestroyContext(&intel->ctx);
 885       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 886
 887       intel_batchbuffer_free(intel->batch);
 888       free(intel->prim.vb);
 889
 890       if (release_texture_heaps) {
 891          /* This share group is about to go away, free our private
 892           * texture object data.
 893           */
 894          if (INTEL_DEBUG & DEBUG_TEXTURE)
 895             fprintf(stderr, "do something to free texture heaps\n");
 896       }
 897
 898       /* free the Mesa context */
 899       _mesa_free_context_data(&intel->ctx);
 900
 901       dri_bufmgr_destroy(intel->bufmgr);
 902    }
 903 }
 904
 905 GLboolean
 906 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 907 {
 908    return GL_TRUE;
 909 }
 910
 911 GLboolean
 912 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 913                  __DRIdrawablePrivate * driDrawPriv,
 914                  __DRIdrawablePrivate * driReadPriv)
 915 {
 916    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 917
 918    if (driContextPriv) {
 919       struct intel_context *intel =
 920          (struct intel_context *) driContextPriv->driverPrivate;
 921       struct intel_framebuffer *intel_fb =
 922          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 923       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 924
 925     intel_update_renderbuffers(driContextPriv, driDrawPriv);
 926     if (driDrawPriv != driReadPriv)
 927         intel_update_renderbuffers(driContextPriv, driReadPriv);
 928
 929       /* XXX FBO temporary fix-ups! */
 930       /* if the renderbuffers don't have regions, init them from the context */
 931       if (!driContextPriv->driScreenPriv->dri2.enabled) {
 932          struct intel_renderbuffer *irbDepth
 933             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 934          struct intel_renderbuffer *irbStencil
 935             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 936
 937          if (intel_fb->color_rb[0]) {
 938             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 939                                           intel->front_region);
 940          }
 941          if (intel_fb->color_rb[1]) {
 942             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 943                                           intel->back_region);
 944          }
 945 #if 0
 946          if (intel_fb->color_rb[2]) {
 947             intel_renderbuffer_set_region(intel_fb->color_rb[2],
 948                                           intel->third_region);
 949          }
 950 #endif
 951          if (irbDepth) {
 952             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 953          }
 954          if (irbStencil) {
 955             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 956          }
 957       }
 958
 959       /* set GLframebuffer size to match window, if needed */
 960       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 961
 962       if (driReadPriv != driDrawPriv) {
 963          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 964       }
 965
 966       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 967
 968       /* The drawbuffer won't always be updated by _mesa_make_current:
 969        */
 970       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 971
 972          if (intel->driReadDrawable != driReadPriv)
 973             intel->driReadDrawable = driReadPriv;
 974
 975          if (intel->driDrawable != driDrawPriv) {
 976             if (driDrawPriv->swap_interval == (unsigned)-1) {
 977                int i;
 978
 979                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 980                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 981                  : VBLANK_FLAG_NO_IRQ;
 982
 983                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 984                driDrawableInitVBlank(driDrawPriv);
 985                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 986
 987                for (i = 0; i < (intel->intelScreen->third.handle ? 3 : 2); i++) {
 988                   if (intel_fb->color_rb[i])
 989                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 990                }
 991             }
 992             intel->driDrawable = driDrawPriv;
 993             intelWindowMoved(intel);
 994          }
 995
 996          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 997       }
 998    }
 999    else {
1000       _mesa_make_current(NULL, NULL, NULL);
1001    }
1002
1003    return GL_TRUE;
1004 }
1005
1006 static void
1007 intelContendedLock(struct intel_context *intel, GLuint flags)
1008 {
1009    __DRIdrawablePrivate *dPriv = intel->driDrawable;
1010    __DRIscreenPrivate *sPriv = intel->driScreen;
1011    volatile struct drm_i915_sarea *sarea = intel->sarea;
1012    int me = intel->hHWContext;
1013
1014    drmGetLock(intel->driFd, intel->hHWContext, flags);
1015    intel->locked = 1;
1016
1017    if (INTEL_DEBUG & DEBUG_LOCK)
1018       _mesa_printf("%s - got contended lock\n", __progname);
1019
1020    /* If the window moved, may need to set a new cliprect now.
1021     *
1022     * NOTE: This releases and regains the hw lock, so all state
1023     * checking must be done *after* this call:
1024     */
1025    if (dPriv)
1026        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
1027
1028    if (sarea && sarea->ctxOwner != me) {
1029       if (INTEL_DEBUG & DEBUG_BUFMGR) {
1030          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
1031                  sarea->ctxOwner, me);
1032       }
1033       sarea->ctxOwner = me;
1034    }
1035
1036    /* If the last consumer of the texture memory wasn't us, notify the fake
1037     * bufmgr and record the new owner.  We should have the memory shared
1038     * between contexts of a single fake bufmgr, but this will at least make
1039     * things correct for now.
1040     */
1041    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
1042       sarea->texAge = intel->hHWContext;
1043       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
1044       if (INTEL_DEBUG & DEBUG_BATCH)
1045          intel_decode_context_reset();
1046       if (INTEL_DEBUG & DEBUG_BUFMGR)
1047          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
1048                  sarea->ctxOwner, intel->hHWContext);
1049    }
1050
1051    if (sarea->width != intel->width || sarea->height != intel->height) {
1052        int numClipRects = intel->numClipRects;
1053
1054        /*
1055         * FIXME: Really only need to do this when drawing to a
1056         * common back- or front buffer.
1057         */
1058
1059        /*
1060         * This will essentially drop the outstanding batchbuffer on
1061         * the floor.
1062         */
1063        intel->numClipRects = 0;
1064
1065        if (intel->Fallback)
1066            _swrast_flush(&intel->ctx);
1067
1068        if (!IS_965(intel->intelScreen->deviceID))
1069            INTEL_FIREVERTICES(intel);
1070
1071        if (intel->batch->map != intel->batch->ptr)
1072            intel_batchbuffer_flush(intel->batch);
1073
1074        intel->numClipRects = numClipRects;
1075
1076        /* force window update */
1077        intel->lastStamp = 0;
1078
1079        intel->width = sarea->width;
1080        intel->height = sarea->height;
1081    }
1082
1083    /* Drawable changed?
1084     */
1085    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
1086        intelWindowMoved(intel);
1087        intel->lastStamp = dPriv->lastStamp;
1088    }
1089 }
1090
1091
1092 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1093
1094 /* Lock the hardware and validate our state.
1095  */
1096 void LOCK_HARDWARE( struct intel_context *intel )
1097 {
1098     __DRIdrawable *dPriv = intel->driDrawable;
1099     __DRIscreen *sPriv = intel->driScreen;
1100     char __ret = 0;
1101     struct intel_framebuffer *intel_fb = NULL;
1102     struct intel_renderbuffer *intel_rb = NULL;
1103
1104     _glthread_LOCK_MUTEX(lockMutex);
1105     assert(!intel->locked);
1106     intel->locked = 1;
1107
1108     if (intel->driDrawable) {
1109        intel_fb = intel->driDrawable->driverPrivate;
1110
1111        if (intel_fb)
1112           intel_rb =
1113              intel_get_renderbuffer(&intel_fb->Base,
1114                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1115     }
1116
1117     if (intel_rb && dPriv->vblFlags &&
1118         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1119         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1120         drmVBlank vbl;
1121
1122         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1123
1124         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1125             vbl.request.type |= DRM_VBLANK_SECONDARY;
1126         }
1127
1128         vbl.request.sequence = intel_rb->vbl_pending;
1129         drmWaitVBlank(intel->driFd, &vbl);
1130         intel_fb->vbl_waited = vbl.reply.sequence;
1131     }
1132
1133     if (!sPriv->dri2.enabled) {
1134         DRM_CAS(intel->driHwLock, intel->hHWContext,
1135                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1136
1137         if (__ret)
1138             intelContendedLock( intel, 0 );
1139     }
1140
1141
1142     if (INTEL_DEBUG & DEBUG_LOCK)
1143       _mesa_printf("%s - locked\n", __progname);
1144 }
1145
1146
1147 /* Unlock the hardware using the global current context
1148  */
1149 void UNLOCK_HARDWARE( struct intel_context *intel )
1150 {
1151     __DRIscreen *sPriv = intel->driScreen;
1152
1153    intel->vtbl.note_unlock( intel );
1154    intel->locked = 0;
1155
1156    if (!sPriv->dri2.enabled)
1157       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1158
1159    _glthread_UNLOCK_MUTEX(lockMutex);
1160
1161    if (INTEL_DEBUG & DEBUG_LOCK)
1162       _mesa_printf("%s - unlocked\n", __progname);
1163
1164    /**
1165     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1166     * cliprects.
1167     */
1168    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1169       intel_batchbuffer_flush(intel->batch);
1170 }
1171