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    if (intel->batch->map != intel->batch->ptr)
 114       intel_batchbuffer_flush(intel->batch);
 115 }
 116
 117 static void
 118 intelDRI2Invalidate(__DRIdrawable *drawable)
 119 {
 120    struct intel_context *intel = drawable->driContextPriv->driverPrivate;
 121
 122    intel->using_dri2_swapbuffers = GL_TRUE;
 123    dri2InvalidateDrawable(drawable);
 124 }
 125
 126 static const struct __DRI2flushExtensionRec intelFlushExtension = {
 127     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
 128     intelDRI2Flush,
 129     intelDRI2Invalidate,
 130 };
 131
 132 static __DRIimage *
 133 intel_create_image_from_name(__DRIcontext *context,
 134                              int width, int height, int format,
 135                              int name, int pitch, void *loaderPrivate)
 136 {
 137     __DRIimage *image;
 138     struct intel_context *intel = context->driverPrivate;
 139     int cpp;
 140
 141     image = CALLOC(sizeof *image);
 142     if (image == NULL)
 143         return NULL;
 144
 145     switch (format) {
 146     case __DRI_IMAGE_FORMAT_RGB565:
 147        image->format = MESA_FORMAT_RGB565;
 148        image->internal_format = GL_RGB;
 149        image->data_type = GL_UNSIGNED_BYTE;
 150        break;
 151     case __DRI_IMAGE_FORMAT_XRGB8888:
 152        image->format = MESA_FORMAT_XRGB8888;
 153        image->internal_format = GL_RGB;
 154        image->data_type = GL_UNSIGNED_BYTE;
 155        break;
 156     case __DRI_IMAGE_FORMAT_ARGB8888:
 157        image->format = MESA_FORMAT_ARGB8888;
 158        image->internal_format = GL_RGBA;
 159        image->data_type = GL_UNSIGNED_BYTE;
 160        break;
 161     default:
 162        free(image);
 163        return NULL;
 164     }
 165
 166     image->data = loaderPrivate;
 167     cpp = _mesa_get_format_bytes(image->format);
 168
 169     image->region = intel_region_alloc_for_handle(intel, cpp, width, height,
 170                                                   pitch, name, "image");
 171     if (image->region == NULL) {
 172        FREE(image);
 173        return NULL;
 174     }
 175
 176     return image;
 177 }
 178
 179 static __DRIimage *
 180 intel_create_image_from_renderbuffer(__DRIcontext *context,
 181                                      int renderbuffer, void *loaderPrivate)
 182 {
 183    __DRIimage *image;
 184    struct intel_context *intel = context->driverPrivate;
 185    struct gl_renderbuffer *rb;
 186    struct intel_renderbuffer *irb;
 187
 188    rb = _mesa_lookup_renderbuffer(&intel->ctx, renderbuffer);
 189    if (!rb) {
 190       _mesa_error(&intel->ctx,
 191                   GL_INVALID_OPERATION, "glRenderbufferExternalMESA");
 192       return NULL;
 193    }
 194
 195    irb = intel_renderbuffer(rb);
 196    image = CALLOC(sizeof *image);
 197    if (image == NULL)
 198       return NULL;
 199
 200    image->internal_format = rb->InternalFormat;
 201    image->format = rb->Format;
 202    image->data_type = rb->DataType;
 203    image->data = loaderPrivate;
 204    intel_region_reference(&image->region, irb->region);
 205
 206    return image;
 207 }
 208
 209 static void
 210 intel_destroy_image(__DRIimage *image)
 211 {
 212     intel_region_release(&image->region);
 213     FREE(image);
 214 }
 215
 216 static struct __DRIimageExtensionRec intelImageExtension = {
 217     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 218     intel_create_image_from_name,
 219     intel_create_image_from_renderbuffer,
 220     intel_destroy_image,
 221 };
 222
 223 static const __DRIextension *intelScreenExtensions[] = {
 224     &driReadDrawableExtension,
 225     &intelTexBufferExtension.base,
 226     &intelFlushExtension.base,
 227     &intelImageExtension.base,
 228     NULL
 229 };
 230
 231 static GLboolean
 232 intel_get_param(__DRIscreen *psp, int param, int *value)
 233 {
 234    int ret;
 235    struct drm_i915_getparam gp;
 236
 237    gp.param = param;
 238    gp.value = value;
 239
 240    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 241    if (ret) {
 242       _mesa_warning(NULL, "drm_i915_getparam: %d", ret);
 243       return GL_FALSE;
 244    }
 245
 246    return GL_TRUE;
 247 }
 248
 249 static void
 250 nop_callback(GLuint key, void *data, void *userData)
 251 {
 252 }
 253
 254 static void
 255 intelDestroyScreen(__DRIscreen * sPriv)
 256 {
 257    struct intel_screen *intelScreen = sPriv->private;
 258
 259    dri_bufmgr_destroy(intelScreen->bufmgr);
 260    driDestroyOptionInfo(&intelScreen->optionCache);
 261
 262    /* Some regions may still have references to them at this point, so
 263     * flush the hash table to prevent _mesa_DeleteHashTable() from
 264     * complaining about the hash not being empty; */
 265    _mesa_HashDeleteAll(intelScreen->named_regions, nop_callback, NULL);
 266    _mesa_DeleteHashTable(intelScreen->named_regions);
 267
 268    FREE(intelScreen);
 269    sPriv->private = NULL;
 270 }
 271
 272
 273 /**
 274  * This is called when we need to set up GL rendering to a new X window.
 275  */
 276 static GLboolean
 277 intelCreateBuffer(__DRIscreen * driScrnPriv,
 278                   __DRIdrawable * driDrawPriv,
 279                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 280 {
 281    struct intel_renderbuffer *rb;
 282
 283    if (isPixmap) {
 284       return GL_FALSE;          /* not implemented */
 285    }
 286    else {
 287       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 288                              mesaVis->depthBits != 24);
 289       gl_format rgbFormat;
 290
 291       struct gl_framebuffer *fb = CALLOC_STRUCT(gl_framebuffer);
 292
 293       if (!fb)
 294          return GL_FALSE;
 295
 296       _mesa_initialize_window_framebuffer(fb, mesaVis);
 297
 298       if (mesaVis->redBits == 5)
 299          rgbFormat = MESA_FORMAT_RGB565;
 300       else if (mesaVis->alphaBits == 0)
 301          rgbFormat = MESA_FORMAT_XRGB8888;
 302       else
 303          rgbFormat = MESA_FORMAT_ARGB8888;
 304
 305       /* setup the hardware-based renderbuffers */
 306       rb = intel_create_renderbuffer(rgbFormat);
 307       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &rb->Base);
 308
 309       if (mesaVis->doubleBufferMode) {
 310          rb = intel_create_renderbuffer(rgbFormat);
 311          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &rb->Base);
 312       }
 313
 314       if (mesaVis->depthBits == 24) {
 315          assert(mesaVis->stencilBits == 8);
 316          /* combined depth/stencil buffer */
 317          struct intel_renderbuffer *depthStencilRb
 318             = intel_create_renderbuffer(MESA_FORMAT_S8_Z24);
 319          /* note: bind RB to two attachment points */
 320          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 321          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 322       }
 323       else if (mesaVis->depthBits == 16) {
 324          /* just 16-bit depth buffer, no hw stencil */
 325          struct intel_renderbuffer *depthRb
 326             = intel_create_renderbuffer(MESA_FORMAT_Z16);
 327          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 328       }
 329
 330       /* now add any/all software-based renderbuffers we may need */
 331       _mesa_add_soft_renderbuffers(fb,
 332                                    GL_FALSE, /* never sw color */
 333                                    GL_FALSE, /* never sw depth */
 334                                    swStencil, mesaVis->accumRedBits > 0,
 335                                    GL_FALSE, /* never sw alpha */
 336                                    GL_FALSE  /* never sw aux */ );
 337       driDrawPriv->driverPrivate = fb;
 338
 339       return GL_TRUE;
 340    }
 341 }
 342
 343 static void
 344 intelDestroyBuffer(__DRIdrawable * driDrawPriv)
 345 {
 346     struct gl_framebuffer *fb = driDrawPriv->driverPrivate;
 347
 348     _mesa_reference_framebuffer(&fb, NULL);
 349 }
 350
 351 /* There are probably better ways to do this, such as an
 352  * init-designated function to register chipids and createcontext
 353  * functions.
 354  */
 355 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 356                                    __DRIcontext * driContextPriv,
 357                                    void *sharedContextPrivate);
 358
 359 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 360                                    __DRIcontext * driContextPriv,
 361                                    void *sharedContextPrivate);
 362 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 363                                   __DRIcontext * driContextPriv,
 364                                   void *sharedContextPrivate);
 365
 366 static GLboolean
 367 intelCreateContext(const __GLcontextModes * mesaVis,
 368                    __DRIcontext * driContextPriv,
 369                    void *sharedContextPrivate)
 370 {
 371    __DRIscreen *sPriv = driContextPriv->driScreenPriv;
 372    struct intel_screen *intelScreen = sPriv->private;
 373
 374 #ifdef I915
 375    if (IS_9XX(intelScreen->deviceID)) {
 376       if (!IS_965(intelScreen->deviceID)) {
 377          return i915CreateContext(mesaVis, driContextPriv,
 378                                   sharedContextPrivate);
 379       }
 380    } else {
 381       intelScreen->no_vbo = GL_TRUE;
 382       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 383    }
 384 #else
 385    if (IS_965(intelScreen->deviceID))
 386       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 387 #endif
 388    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 389    return GL_FALSE;
 390 }
 391
 392 static GLboolean
 393 intel_init_bufmgr(struct intel_screen *intelScreen)
 394 {
 395    __DRIscreen *spriv = intelScreen->driScrnPriv;
 396    int num_fences = 0;
 397
 398    intelScreen->no_hw = getenv("INTEL_NO_HW") != NULL;
 399
 400    intelScreen->bufmgr = intel_bufmgr_gem_init(spriv->fd, BATCH_SZ);
 401    /* Otherwise, use the classic buffer manager. */
 402    if (intelScreen->bufmgr == NULL) {
 403       fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 404               __func__, __LINE__);
 405       return GL_FALSE;
 406    }
 407
 408    if (!intel_get_param(spriv, I915_PARAM_NUM_FENCES_AVAIL, &num_fences) ||
 409        num_fences == 0) {
 410       fprintf(stderr, "[%s: %u] Kernel 2.6.29 required.\n", __func__, __LINE__);
 411       return GL_FALSE;
 412    }
 413
 414    drm_intel_bufmgr_gem_enable_fenced_relocs(intelScreen->bufmgr);
 415
 416    intelScreen->named_regions = _mesa_NewHashTable();
 417
 418    return GL_TRUE;
 419 }
 420
 421 /**
 422  * This is the driver specific part of the createNewScreen entry point.
 423  * Called when using DRI2.
 424  *
 425  * \return the __GLcontextModes supported by this driver
 426  */
 427 static const
 428 __DRIconfig **intelInitScreen2(__DRIscreen *psp)
 429 {
 430    struct intel_screen *intelScreen;
 431    GLenum fb_format[3];
 432    GLenum fb_type[3];
 433
 434    static const GLenum back_buffer_modes[] = {
 435        GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 436    };
 437    uint8_t depth_bits[4], stencil_bits[4], msaa_samples_array[1];
 438    int color;
 439    __DRIconfig **configs = NULL;
 440
 441    /* Allocate the private area */
 442    intelScreen = CALLOC(sizeof *intelScreen);
 443    if (!intelScreen) {
 444       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 445       return GL_FALSE;
 446    }
 447    /* parse information in __driConfigOptions */
 448    driParseOptionInfo(&intelScreen->optionCache,
 449                       __driConfigOptions, __driNConfigOptions);
 450
 451    intelScreen->driScrnPriv = psp;
 452    psp->private = (void *) intelScreen;
 453
 454    /* Determine chipset ID */
 455    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 456                         &intelScreen->deviceID))
 457       return GL_FALSE;
 458
 459    if (!intel_init_bufmgr(intelScreen))
 460        return GL_FALSE;
 461
 462    psp->extensions = intelScreenExtensions;
 463
 464    msaa_samples_array[0] = 0;
 465
 466    fb_format[0] = GL_RGB;
 467    fb_type[0] = GL_UNSIGNED_SHORT_5_6_5;
 468
 469    fb_format[1] = GL_BGR;
 470    fb_type[1] = GL_UNSIGNED_INT_8_8_8_8_REV;
 471
 472    fb_format[2] = GL_BGRA;
 473    fb_type[2] = GL_UNSIGNED_INT_8_8_8_8_REV;
 474
 475    depth_bits[0] = 0;
 476    stencil_bits[0] = 0;
 477
 478    /* Generate a rich set of useful configs that do not include an
 479     * accumulation buffer.
 480     */
 481    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 482       __DRIconfig **new_configs;
 483       int depth_factor;
 484
 485       /* Starting with DRI2 protocol version 1.1 we can request a depth/stencil
 486        * buffer that has a diffferent number of bits per pixel than the color
 487        * buffer.  This isn't yet supported here.
 488        */
 489       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 490          depth_bits[1] = 16;
 491          stencil_bits[1] = 0;
 492       } else {
 493          depth_bits[1] = 24;
 494          stencil_bits[1] = 8;
 495       }
 496
 497       depth_factor = 2;
 498
 499       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 500                                      depth_bits,
 501                                      stencil_bits,
 502                                      depth_factor,
 503                                      back_buffer_modes,
 504                                      ARRAY_SIZE(back_buffer_modes),
 505                                      msaa_samples_array,
 506                                      ARRAY_SIZE(msaa_samples_array),
 507                                      GL_FALSE);
 508       if (configs == NULL)
 509          configs = new_configs;
 510       else
 511          configs = driConcatConfigs(configs, new_configs);
 512    }
 513
 514    /* Generate the minimum possible set of configs that include an
 515     * accumulation buffer.
 516     */
 517    for (color = 0; color < ARRAY_SIZE(fb_format); color++) {
 518       __DRIconfig **new_configs;
 519
 520       if (fb_type[color] == GL_UNSIGNED_SHORT_5_6_5) {
 521          depth_bits[0] = 16;
 522          stencil_bits[0] = 0;
 523       } else {
 524          depth_bits[0] = 24;
 525          stencil_bits[0] = 8;
 526       }
 527
 528       new_configs = driCreateConfigs(fb_format[color], fb_type[color],
 529                                      depth_bits, stencil_bits, 1,
 530                                      back_buffer_modes + 1, 1,
 531                                      msaa_samples_array, 1,
 532                                      GL_TRUE);
 533       if (configs == NULL)
 534          configs = new_configs;
 535       else
 536          configs = driConcatConfigs(configs, new_configs);
 537    }
 538
 539    if (configs == NULL) {
 540       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 541               __LINE__);
 542       return NULL;
 543    }
 544
 545    return (const __DRIconfig **)configs;
 546 }
 547
 548 const struct __DriverAPIRec driDriverAPI = {
 549    .DestroyScreen        = intelDestroyScreen,
 550    .CreateContext        = intelCreateContext,
 551    .DestroyContext       = intelDestroyContext,
 552    .CreateBuffer         = intelCreateBuffer,
 553    .DestroyBuffer        = intelDestroyBuffer,
 554    .MakeCurrent          = intelMakeCurrent,
 555    .UnbindContext        = intelUnbindContext,
 556    .InitScreen2          = intelInitScreen2,
 557 };
 558
 559 /* This is the table of extensions that the loader will dlsym() for. */
 560 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 561     &driCoreExtension.base,
 562     &driDRI2Extension.base,
 563     NULL
 564 };