src/mesa/drivers/dri/intel/intel_screen.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 #include "main/glheader.h"
  29 #include "main/context.h"
  30 #include "main/framebuffer.h"
  31 #include "main/renderbuffer.h"
  32 #include "main/hash.h"
  33 #include "main/fbobject.h"
  34
  35 #include "utils.h"
  36 #include "xmlpool.h"
  37
  38 #include "intel_batchbuffer.h"
  39 #include "intel_buffers.h"
  40 #include "intel_bufmgr.h"
  41 #include "intel_chipset.h"
  42 #include "intel_fbo.h"
  43 #include "intel_screen.h"
  44 #include "intel_tex.h"
  45 #include "intel_regions.h"
  46
  47 #include "i915_drm.h"
  48
  49 #define DRI_CONF_TEXTURE_TILING(def) \
  50
  51 PUBLIC const char __driConfigOptions[] =
  52    DRI_CONF_BEGIN
  53    DRI_CONF_SECTION_PERFORMANCE
  54       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_ALWAYS_SYNC)
  55       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  56        * DRI_CONF_BO_REUSE_ALL
  57        */
  58       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 1, "0:1")
  59          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  60             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  61             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  62          DRI_CONF_DESC_END
  63       DRI_CONF_OPT_END
  64
  65       DRI_CONF_OPT_BEGIN(texture_tiling, bool, true)
  66          DRI_CONF_DESC(en, "Enable texture tiling")
  67       DRI_CONF_OPT_END
  68
  69       DRI_CONF_OPT_BEGIN(early_z, bool, false)
  70          DRI_CONF_DESC(en, "Enable early Z in classic mode (unstable, 945-only).")
  71       DRI_CONF_OPT_END
  72
  73       DRI_CONF_OPT_BEGIN(fragment_shader, bool, false)
  74          DRI_CONF_DESC(en, "Enable limited ARB_fragment_shader support on 915/945.")
  75       DRI_CONF_OPT_END
  76
  77    DRI_CONF_SECTION_END
  78    DRI_CONF_SECTION_QUALITY
  79       DRI_CONF_FORCE_S3TC_ENABLE(false)
  80       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  81    DRI_CONF_SECTION_END
  82    DRI_CONF_SECTION_DEBUG
  83      DRI_CONF_NO_RAST(false)
  84      DRI_CONF_ALWAYS_FLUSH_BATCH(false)
  85      DRI_CONF_ALWAYS_FLUSH_CACHE(false)
  86
  87       DRI_CONF_OPT_BEGIN(stub_occlusion_query, bool, false)
  88          DRI_CONF_DESC(en, "Enable stub ARB_occlusion_query support on 915/945.")
  89       DRI_CONF_OPT_END
  90    DRI_CONF_SECTION_END
  91 DRI_CONF_END;
  92
  93 const GLuint __driNConfigOptions = 11;
  94
  95 #ifdef USE_NEW_INTERFACE
  96 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  97 #endif /*USE_NEW_INTERFACE */
  98
  99 static const __DRItexBufferExtension intelTexBufferExtension = {
 100     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 101    intelSetTexBuffer,
 102    intelSetTexBuffer2,
 103 };
 104
 105 static void
 106 intelDRI2Flush(__DRIdrawable *drawable)
 107 {
 108    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 109
 110    if (intel->gen < 4)
 111       INTEL_FIREVERTICES(intel);
 112
 113    intel->need_throttle = GL_TRUE;
 114
 115    if (intel->batch->map != intel->batch->ptr)
 116       intel_batchbuffer_flush(intel->batch);
 117 }
 118
 119 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 120     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 121     intelDRI2Flush,
 122     dri2InvalidateDrawable,
 123 };
 124
 125 static __DRIimage *
 126 intel_create_image_from_name(__DRIcontext *context,
 127                              int width, int height, int format,
 128                              int name, int pitch, void *loaderPrivate)
 129 {
 130     __DRIimage *image;
 131     struct intel_context *intel = context->driverPrivate;
 132     int cpp;
 133
 134     image = CALLOC(sizeof *image);
 135     if (image == NULL)
 136         return NULL;
 137
 138     switch (format) {
 139     case __DRI_IMAGE_FORMAT_RGB565:
 140        image->format = MESA_FORMAT_RGB565;
 141        image->internal_format = GL_RGB;
 142        image->data_type = GL_UNSIGNED_BYTE;
 143        break;
 144     case __DRI_IMAGE_FORMAT_XRGB8888:
 145        image->format = MESA_FORMAT_XRGB8888;
 146        image->internal_format = GL_RGB;
 147        image->data_type = GL_UNSIGNED_BYTE;
 148        break;
 149     case __DRI_IMAGE_FORMAT_ARGB8888:
 150        image->format = MESA_FORMAT_ARGB8888;
 151        image->internal_format = GL_RGBA;
 152        image->data_type = GL_UNSIGNED_BYTE;
 153        break;
 154     default:
 155        free(image);
 156        return NULL;
 157     }
 158
 159     image->data = loaderPrivate;
 160     cpp = _mesa_get_format_bytes(image->format);
 161
 162     image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
 163                                                   pitch, name, "image");
 164     if (image->region == NULL) {
 165        FREE(image);
 166        return NULL;
 167     }
 168
 169     return image;
 170 }
 171
 172 static __DRIimage *
 173 intel_create_image_from_renderbuffer(__DRIcontext *context,
 174                                      int renderbuffer, void *loaderPrivate)
 175 {
 176    __DRIimage *image;
 177    struct intel_context *intel = context->driverPrivate;
 178    struct gl_renderbuffer *rb;
 179    struct intel_renderbuffer *irb;
 180
 181    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 182    if (!rb) {
 183       _mesa_error(&intel->ctx,
 184                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 185       return NULL;
 186    }
 187
 188    irb = intel_renderbuffer(rb);
 189    image = CALLOC(sizeof *image);
 190    if (image == NULL)
 191       return NULL;
 192
 193    image->internal_format = rb->InternalFormat;
 194    image->format = rb->Format;
 195    image->data_type = rb->DataType;
 196    image->data = loaderPrivate;
 197    intel_region_reference(&image->region, irb->region);
 198
 199    return image;
 200 }
 201
 202 static void
 203 intel_destroy_image(__DRIimage *image)
 204 {
 205     intel_region_release(&image->region);
 206     FREE(image);
 207 }
 208
 209 static struct __DRIimageExtensionRec intelImageExtension = {
 210     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 211     intel_create_image_from_name,
 212     intel_create_image_from_renderbuffer,
 213     intel_destroy_image,
 214 };
 215
 216 static const __DRIextension *intelScreenExtensions[] = {
 217     &driReadDrawableExtension,
 218     &intelTexBufferExtension.base,
 219     &intelFlushExtension.base,
 220     &intelImageExtension.base,
 221     &dri2ConfigQueryExtension.base,
 222     NULL
 223 };
 224
 225 static GLboolean
 226 intel_get_param(__DRIscreen *psp, int param, int *value)
 227 {
 228    int ret;
 229    struct drm_i915_getparam gp;
 230
 231    gp.param = param;
 232    gp.value = value;
 233
 234    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 235    if (ret) {
 236       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 237       return GL_FALSE;
 238    }
 239
 240    return GL_TRUE;
 241 }
 242
 243 static void
 244 nop_callback(GLuint key, void *data, void *userData)
 245 {
 246 }
 247
 248 static void
 249 intelDestroyScreen(__DRIscreen * sPriv)
 250 {
 251    struct intel_screen *intelScreen = sPriv->private;
 252
 253    dri_bufmgr_destroy(intelScreen->bufmgr);
 254    driDestroyOptionInfo(&intelScreen->optionCache);
 255
 256    /* Some regions may still have references to them at this point, so
 257     * flush the hash table to prevent _mesa_DeleteHashTable() from
 258     * complaining about the hash not being empty; */
 259    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 260    _mesa_DeleteHashTable(intelScreen->named_regions);
 261
 262    FREE(intelScreen);
 263    sPriv->private = NULL;
 264 }
 265
 266
 267 /**
 268  * This is called when we need to set up GL rendering to a new X window.
 269  */
 270 static GLboolean
 271 intelCreateBuffer(__DRIscreen * driScrnPriv,
 272                   __DRIdrawable * driDrawPriv,
 273                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 274 {
 275    struct intel_renderbuffer *rb;
 276
 277    if (isPixmap) {
 278       return GL_FALSE;          /* not implemented */
 279    }
 280    else {
 281       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 282                              mesaVis->depthBits != 24);
 283       gl_format rgbFormat;
 284
 285       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 286
 287       if (!fb)
 288          return GL_FALSE;
 289
 290       _mesa_initialize_window_framebuffer(fb, mesaVis);
 291
 292       if (mesaVis->redBits == 5)
 293          rgbFormat = MESA_FORMAT_RGB565;
 294       else if (mesaVis->alphaBits == 0)
 295          rgbFormat = MESA_FORMAT_XRGB8888;
 296       else
 297          rgbFormat = MESA_FORMAT_ARGB8888;
 298
 299       /* setup the hardware-based renderbuffers */
 300       rb = intel_create_renderbuffer(rgbFormat);
 301       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 302
 303       if (mesaVis->doubleBufferMode) {
 304          rb = intel_create_renderbuffer(rgbFormat);
 305          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 306       }
 307
 308       if (mesaVis->depthBits == 24) {
 309          assert(mesaVis->stencilBits == 8);
 310          /* combined depth/stencil buffer */
 311          struct intel_renderbuffer *depthStencilRb
 312             = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 313          /* note: bind RB to two attachment points */
 314          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 315          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 316       }
 317       else if (mesaVis->depthBits == 16) {
 318          /* just 16-bit depth buffer, no hw stencil */
 319          struct intel_renderbuffer *depthRb
 320             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 321          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 322       }
 323
 324       /* now add any/all software-based renderbuffers we may need */
 325       _mesa_add_soft_renderbuffers(fb,
 326                                    GL_FALSE, /* never sw color */
 327                                    GL_FALSE, /* never sw depth */
 328                                    swStencil, mesaVis->accumRedBits > 0,
 329                                    GL_FALSE, /* never sw alpha */
 330                                    GL_FALSE  /* never sw aux */ );
 331       driDrawPriv->driverPrivate = fb;
 332
 333       return GL_TRUE;
 334    }
 335 }
 336
 337 static void
 338 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 339 {
 340     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 341
 342     _mesa_reference_framebuffer(&fb, NULL);
 343 }
 344
 345 /* There are probably better ways to do this, such as an
 346  * init-designated function to register chipids and createcontext
 347  * functions.
 348  */
 349 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 350                                    __DRIcontext * driContextPriv,
 351                                    void *sharedContextPrivate);
 352
 353 extern GLboolean i915CreateContext(int api,
 354                                    const __GLcontextModes * mesaVis,
 355                                    __DRIcontext * driContextPriv,
 356                                    void *sharedContextPrivate);
 357 extern GLboolean brwCreateContext(int api,
 358                                   const __GLcontextModes * mesaVis,
 359                                   __DRIcontext * driContextPriv,
 360                                   void *sharedContextPrivate);
 361
 362 static GLboolean
 363 intelCreateContext(gl_api api,
 364                    const __GLcontextModes * mesaVis,
 365                    __DRIcontext * driContextPriv,
 366                    void *sharedContextPrivate)
 367 {
 368    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 369    struct intel_screen *intelScreen = sPriv->private;
 370
 371 #ifdef I915
 372    if (IS_9XX(intelScreen->deviceID)) {
 373       if (!IS_965(intelScreen->deviceID)) {
 374          return i915CreateContext(api, mesaVis, driContextPriv,
 375                                   sharedContextPrivate);
 376       }
 377    } else {
 378       intelScreen->no_vbo = GL_TRUE;
 379       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 380    }
 381 #else
 382    if (IS_965(intelScreen->deviceID))
 383       return brwCreateContext(api, mesaVis,
 384                               driContextPriv, sharedContextPrivate);
 385 #endif
 386    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 387    return GL_FALSE;
 388 }
 389
 390 static GLboolean
 391 intel_init_bufmgr(struct intel_screen *intelScreen)
 392 {
 393    __DRIscreen *spriv = intelScreen->driScrnPriv;
 394    int num_fences = 0;
 395
 396    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 397
 398    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 399    /* Otherwise, use the classic buffer manager. */
 400    if (intelScreen->bufmgr == NULL) {
 401       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 402               __func__, __LINE__);
 403       return GL_FALSE;
 404    }
 405
 406    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 407        num_fences == 0) {
 408       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 409       return GL_FALSE;
 410    }
 411
 412    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 413
 414    intelScreen->named_regions = _mesa_NewHashTable();
 415
 416    return GL_TRUE;
 417 }
 418
 419 /**
 420  * This is the driver specific part of the createNewScreen entry point.
 421  * Called when using DRI2.
 422  *
 423  * \return the __GLcontextModes supported by this driver
 424  */
 425 static const
 426 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 427 {
 428    struct intel_screen *intelScreen;
 429    GLenum fb_format[3];
 430    GLenum fb_type[3];
 431    unsigned int api_mask;
 432
 433    static const GLenum back_buffer_modes[] = {
 434        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 435    };
 436    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 437    int color;
 438    __DRIconfig **configs = NULL;
 439
 440    /* Allocate the private area */
 441    intelScreen = CALLOC(sizeof *intelScreen);
 442    if (!intelScreen) {
 443       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 444       return GL_FALSE;
 445    }
 446    /* parse information in __driConfigOptions */
 447    driParseOptionInfo(&intelScreen->optionCache,
 448                       __driConfigOptions, __driNConfigOptions);
 449
 450    intelScreen->driScrnPriv = psp;
 451    psp->private = (void *) intelScreen;
 452
 453    /* Determine chipset ID */
 454    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 455                         &intelScreen->deviceID))
 456       return GL_FALSE;
 457
 458    api_mask = (1 << __DRI_API_OPENGL);
 459 #if FEATURE_ES1
 460    api_mask |= (1 << __DRI_API_GLES);
 461 #endif
 462 #if FEATURE_ES2
 463    api_mask |= (1 << __DRI_API_GLES2);
 464 #endif
 465
 466    if (IS_9XX(intelScreen->deviceID) || IS_965(intelScreen->deviceID))
 467       psp->api_mask = api_mask;
 468
 469    if (!intel_init_bufmgr(intelScreen))
 470        return GL_FALSE;
 471
 472    psp->extensions = intelScreenExtensions;
 473
 474    msaa_samples_array[0] = 0;
 475
 476    fb_format[0] = GL_RGB;
 477    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 478
 479    fb_format[1] = GL_BGR;
 480    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 481
 482    fb_format[2] = GL_BGRA;
 483    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 484
 485    depth_bits[0] = 0;
 486    stencil_bits[0] = 0;
 487
 488    /* Generate a rich set of useful configs that do not include an
 489     * accumulation buffer.
 490     */
 491    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 492       __DRIconfig **new_configs;
 493       int depth_factor;
 494
 495       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 496        * buffer that has a diffferent number of bits per pixel than the color
 497        * buffer.  This isn't yet supported here.
 498        */
 499       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 500          depth_bits[1] = 16;
 501          stencil_bits[1] = 0;
 502       } else {
 503          depth_bits[1] = 24;
 504          stencil_bits[1] = 8;
 505       }
 506
 507       depth_factor = 2;
 508
 509       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 510                                      depth_bits,
 511                                      stencil_bits,
 512                                      depth_factor,
 513                                      back_buffer_modes,
 514                                      ARRAY_SIZE(back_buffer_modes),
 515                                      msaa_samples_array,
 516                                      ARRAY_SIZE(msaa_samples_array),
 517                                      GL_FALSE);
 518       if (configs == NULL)
 519          configs = new_configs;
 520       else
 521          configs = driConcatConfigs(configs, new_configs);
 522    }
 523
 524    /* Generate the minimum possible set of configs that include an
 525     * accumulation buffer.
 526     */
 527    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 528       __DRIconfig **new_configs;
 529
 530       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 531          depth_bits[0] = 16;
 532          stencil_bits[0] = 0;
 533       } else {
 534          depth_bits[0] = 24;
 535          stencil_bits[0] = 8;
 536       }
 537
 538       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 539                                      depth_bits, stencil_bits, 1,
 540                                      back_buffer_modes + 1, 1,
 541                                      msaa_samples_array, 1,
 542                                      GL_TRUE);
 543       if (configs == NULL)
 544          configs = new_configs;
 545       else
 546          configs = driConcatConfigs(configs, new_configs);
 547    }
 548
 549    if (configs == NULL) {
 550       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 551               __LINE__);
 552       return NULL;
 553    }
 554
 555    return (const __DRIconfig **)configs;
 556 }
 557
 558 const struct __DriverAPIRec driDriverAPI = {
 559    .DestroyScreen        = intelDestroyScreen,
 560    .CreateContext        = intelCreateContext,
 561    .DestroyContext       = intelDestroyContext,
 562    .CreateBuffer         = intelCreateBuffer,
 563    .DestroyBuffer        = intelDestroyBuffer,
 564    .MakeCurrent          = intelMakeCurrent,
 565    .UnbindContext        = intelUnbindContext,
 566    .InitScreen2          = intelInitScreen2,
 567 };
 568
 569 /* This is the table of extensions that the loader will dlsym() for. */
 570 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 571     &driCoreExtension.base,
 572     &driDRI2Extension.base,
 573     NULL
 574 };