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 __DRItexOffsetExtension intelTexOffsetExtension = {
 100    { __DRI_TEX_OFFSET },
 101    intelSetTexOffset,
 102 };
 103
 104 static const __DRItexBufferExtension intelTexBufferExtension = {
 105     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 106    intelSetTexBuffer,
 107    intelSetTexBuffer2,
 108 };
 109
 110 static void
 111 intelDRI2Flush(__DRIdrawable *drawable)
 112 {
 113    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 114
 115    if (intel->gen < 4)
 116       INTEL_FIREVERTICES(intel);
 117
 118    if (intel->batch->map != intel->batch->ptr)
 119       intel_batchbuffer_flush(intel->batch);
 120 }
 121
 122 static void
 123 intelDRI2Invalidate(__DRIdrawable *drawable)
 124 {
 125    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 126
 127    intel->using_dri2_swapbuffers = GL_TRUE;
 128    dri2InvalidateDrawable(drawable);
 129 }
 130
 131 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 132     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 133     intelDRI2Flush,
 134     intelDRI2Invalidate,
 135 };
 136
 137 static __DRIimage *
 138 intel_create_image_from_name(__DRIcontext *context,
 139                              int width, int height, int format,
 140                              int name, int pitch, void *loaderPrivate)
 141 {
 142     __DRIimage *image;
 143     struct intel_context *intel = context->driverPrivate;
 144     int cpp;
 145
 146     image = CALLOC(sizeof *image);
 147     if (image == NULL)
 148         return NULL;
 149
 150     switch (format) {
 151     case __DRI_IMAGE_FORMAT_RGB565:
 152        image->format = MESA_FORMAT_RGB565;
 153        image->internal_format = GL_RGB;
 154        image->data_type = GL_UNSIGNED_BYTE;
 155        break;
 156     case __DRI_IMAGE_FORMAT_XRGB8888:
 157        image->format = MESA_FORMAT_XRGB8888;
 158        image->internal_format = GL_RGB;
 159        image->data_type = GL_UNSIGNED_BYTE;
 160        break;
 161     case __DRI_IMAGE_FORMAT_ARGB8888:
 162        image->format = MESA_FORMAT_ARGB8888;
 163        image->internal_format = GL_RGBA;
 164        image->data_type = GL_UNSIGNED_BYTE;
 165        break;
 166     default:
 167        free(image);
 168        return NULL;
 169     }
 170
 171     image->data = loaderPrivate;
 172     cpp = _mesa_get_format_bytes(image->format);
 173
 174     image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
 175                                                   pitch, name, "image");
 176     if (image->region == NULL) {
 177        FREE(image);
 178        return NULL;
 179     }
 180
 181     return image;
 182 }
 183
 184 static __DRIimage *
 185 intel_create_image_from_renderbuffer(__DRIcontext *context,
 186                                      int renderbuffer, void *loaderPrivate)
 187 {
 188    __DRIimage *image;
 189    struct intel_context *intel = context->driverPrivate;
 190    struct gl_renderbuffer *rb;
 191    struct intel_renderbuffer *irb;
 192
 193    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 194    if (!rb) {
 195       _mesa_error(&intel->ctx,
 196                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 197       return NULL;
 198    }
 199
 200    irb = intel_renderbuffer(rb);
 201    image = CALLOC(sizeof *image);
 202    if (image == NULL)
 203       return NULL;
 204
 205    image->internal_format = rb->InternalFormat;
 206    image->format = rb->Format;
 207    image->data_type = rb->DataType;
 208    image->data = loaderPrivate;
 209    intel_region_reference(&image->region, irb->region);
 210
 211    return image;
 212 }
 213
 214 static void
 215 intel_destroy_image(__DRIimage *image)
 216 {
 217     intel_region_release(&image->region);
 218     FREE(image);
 219 }
 220
 221 static struct __DRIimageExtensionRec intelImageExtension = {
 222     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 223     intel_create_image_from_name,
 224     intel_create_image_from_renderbuffer,
 225     intel_destroy_image,
 226 };
 227
 228 static const __DRIextension *intelScreenExtensions[] = {
 229     &driReadDrawableExtension,
 230     &intelTexOffsetExtension.base,
 231     &intelTexBufferExtension.base,
 232     &intelFlushExtension.base,
 233     &intelImageExtension.base,
 234     NULL
 235 };
 236
 237 static GLboolean
 238 intel_get_param(__DRIscreen *psp, int param, int *value)
 239 {
 240    int ret;
 241    struct drm_i915_getparam gp;
 242
 243    gp.param = param;
 244    gp.value = value;
 245
 246    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 247    if (ret) {
 248       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 249       return GL_FALSE;
 250    }
 251
 252    return GL_TRUE;
 253 }
 254
 255 static void
 256 nop_callback(GLuint key, void *data, void *userData)
 257 {
 258 }
 259
 260 static void
 261 intelDestroyScreen(__DRIscreen * sPriv)
 262 {
 263    struct intel_screen *intelScreen = sPriv->private;
 264
 265    dri_bufmgr_destroy(intelScreen->bufmgr);
 266    driDestroyOptionInfo(&intelScreen->optionCache);
 267
 268    /* Some regions may still have references to them at this point, so
 269     * flush the hash table to prevent _mesa_DeleteHashTable() from
 270     * complaining about the hash not being empty; */
 271    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 272    _mesa_DeleteHashTable(intelScreen->named_regions);
 273
 274    FREE(intelScreen);
 275    sPriv->private = NULL;
 276 }
 277
 278
 279 /**
 280  * This is called when we need to set up GL rendering to a new X window.
 281  */
 282 static GLboolean
 283 intelCreateBuffer(__DRIscreen * driScrnPriv,
 284                   __DRIdrawable * driDrawPriv,
 285                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 286 {
 287    struct intel_renderbuffer *rb;
 288
 289    if (isPixmap) {
 290       return GL_FALSE;          /* not implemented */
 291    }
 292    else {
 293       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 294                              mesaVis->depthBits != 24);
 295       gl_format rgbFormat;
 296
 297       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 298
 299       if (!fb)
 300          return GL_FALSE;
 301
 302       _mesa_initialize_window_framebuffer(fb, mesaVis);
 303
 304       if (mesaVis->redBits == 5)
 305          rgbFormat = MESA_FORMAT_RGB565;
 306       else if (mesaVis->alphaBits == 0)
 307          rgbFormat = MESA_FORMAT_XRGB8888;
 308       else
 309          rgbFormat = MESA_FORMAT_ARGB8888;
 310
 311       /* setup the hardware-based renderbuffers */
 312       rb = intel_create_renderbuffer(rgbFormat);
 313       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 314
 315       if (mesaVis->doubleBufferMode) {
 316          rb = intel_create_renderbuffer(rgbFormat);
 317          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 318       }
 319
 320       if (mesaVis->depthBits == 24) {
 321          if (mesaVis->stencilBits == 8) {
 322             /* combined depth/stencil buffer */
 323             struct intel_renderbuffer *depthStencilRb
 324                = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 325             /* note: bind RB to two attachment points */
 326             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 327             _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 328          } else {
 329             struct intel_renderbuffer *depthRb
 330                = intel_create_renderbuffer(MESA_FORMAT_X8_Z24);
 331             _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 332          }
 333       }
 334       else if (mesaVis->depthBits == 16) {
 335          /* just 16-bit depth buffer, no hw stencil */
 336          struct intel_renderbuffer *depthRb
 337             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 338          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 339       }
 340
 341       /* now add any/all software-based renderbuffers we may need */
 342       _mesa_add_soft_renderbuffers(fb,
 343                                    GL_FALSE, /* never sw color */
 344                                    GL_FALSE, /* never sw depth */
 345                                    swStencil, mesaVis->accumRedBits > 0,
 346                                    GL_FALSE, /* never sw alpha */
 347                                    GL_FALSE  /* never sw aux */ );
 348       driDrawPriv->driverPrivate = fb;
 349
 350       return GL_TRUE;
 351    }
 352 }
 353
 354 static void
 355 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 356 {
 357     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 358
 359     _mesa_reference_framebuffer(&fb, NULL);
 360 }
 361
 362 /* There are probably better ways to do this, such as an
 363  * init-designated function to register chipids and createcontext
 364  * functions.
 365  */
 366 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 367                                    __DRIcontext * driContextPriv,
 368                                    void *sharedContextPrivate);
 369
 370 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 371                                    __DRIcontext * driContextPriv,
 372                                    void *sharedContextPrivate);
 373 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 374                                   __DRIcontext * driContextPriv,
 375                                   void *sharedContextPrivate);
 376
 377 static GLboolean
 378 intelCreateContext(const __GLcontextModes * mesaVis,
 379                    __DRIcontext * driContextPriv,
 380                    void *sharedContextPrivate)
 381 {
 382    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 383    struct intel_screen *intelScreen = sPriv->private;
 384
 385 #ifdef I915
 386    if (IS_9XX(intelScreen->deviceID)) {
 387       if (!IS_965(intelScreen->deviceID)) {
 388          return i915CreateContext(mesaVis, driContextPriv,
 389                                   sharedContextPrivate);
 390       }
 391    } else {
 392       intelScreen->no_vbo = GL_TRUE;
 393       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 394    }
 395 #else
 396    if (IS_965(intelScreen->deviceID))
 397       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 398 #endif
 399    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 400    return GL_FALSE;
 401 }
 402
 403 static GLboolean
 404 intel_init_bufmgr(struct intel_screen *intelScreen)
 405 {
 406    __DRIscreen *spriv = intelScreen->driScrnPriv;
 407    int num_fences = 0;
 408
 409    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 410
 411    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 412    /* Otherwise, use the classic buffer manager. */
 413    if (intelScreen->bufmgr == NULL) {
 414       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 415               __func__, __LINE__);
 416       return GL_FALSE;
 417    }
 418
 419    if (intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences))
 420       intelScreen->kernel_exec_fencing = !!num_fences;
 421    else
 422       intelScreen->kernel_exec_fencing = GL_FALSE;
 423
 424    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 425
 426    intelScreen->named_regions = _mesa_NewHashTable();
 427
 428    return GL_TRUE;
 429 }
 430
 431 /**
 432  * This is the driver specific part of the createNewScreen entry point.
 433  * Called when using DRI2.
 434  *
 435  * \return the __GLcontextModes supported by this driver
 436  */
 437 static const
 438 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 439 {
 440    struct intel_screen *intelScreen;
 441    GLenum fb_format[3];
 442    GLenum fb_type[3];
 443
 444    static const GLenum back_buffer_modes[] = {
 445        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 446    };
 447    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 448    int color;
 449    __DRIconfig **configs = NULL;
 450
 451    /* Allocate the private area */
 452    intelScreen = CALLOC(sizeof *intelScreen);
 453    if (!intelScreen) {
 454       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 455       return GL_FALSE;
 456    }
 457    /* parse information in __driConfigOptions */
 458    driParseOptionInfo(&intelScreen->optionCache,
 459                       __driConfigOptions, __driNConfigOptions);
 460
 461    intelScreen->driScrnPriv = psp;
 462    psp->private = (void *) intelScreen;
 463
 464    /* Determine chipset ID */
 465    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 466                         &intelScreen->deviceID))
 467       return GL_FALSE;
 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 };