src/gallium/state_trackers/dri/drm/dri2.c

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.9
   4  *
   5  * Copyright 2009, VMware, Inc.
   6  * All Rights Reserved.
   7  * Copyright (C) 2010 LunarG Inc.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  * Authors:
  27  *    Keith Whitwell <keithw@vmware.com>
  28  *    Jakob Bornecrantz <wallbraker@gmail.com>
  29  *    Chia-I Wu <olv@lunarg.com>
  30  */
  31
  32 #include "util/u_memory.h"
  33 #include "util/u_inlines.h"
  34 #include "util/u_format.h"
  35 #include "util/u_debug.h"
  36 #include "state_tracker/drm_api.h"
  37
  38 #include "dri_screen.h"
  39 #include "dri_context.h"
  40 #include "dri_drawable.h"
  41 #include "dri2.h"
  42
  43 #include "GL/internal/dri_interface.h"
  44
  45 /**
  46  * DRI2 flush extension.
  47  */
  48 static void
  49 dri2_flush_drawable(__DRIdrawable *draw)
  50 {
  51 }
  52
  53 static void
  54 dri2_invalidate_drawable(__DRIdrawable *dPriv)
  55 {
  56    struct dri_drawable *drawable = dri_drawable(dPriv);
  57    struct dri_context *ctx = dri_context(dPriv->driContextPriv);
  58
  59    dri2InvalidateDrawable(dPriv);
  60    drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
  61
  62    if (ctx)
  63       ctx->st->notify_invalid_framebuffer(ctx->st, &drawable->base);
  64 }
  65
  66 static const __DRI2flushExtension dri2FlushExtension = {
  67     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
  68     dri2_flush_drawable,
  69     dri2_invalidate_drawable,
  70 };
  71
  72 /**
  73  * These are used for GLX_EXT_texture_from_pixmap
  74  */
  75 static void
  76 dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
  77                      GLint format, __DRIdrawable *dPriv)
  78 {
  79    struct dri_context *ctx = dri_context(pDRICtx);
  80    struct dri_drawable *drawable = dri_drawable(dPriv);
  81    struct pipe_resource *pt;
  82
  83    dri_drawable_validate_att(drawable, ST_ATTACHMENT_FRONT_LEFT);
  84
  85    pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
  86
  87    if (pt) {
  88       enum pipe_format internal_format = pt->format;
  89
  90       if (format == __DRI_TEXTURE_FORMAT_RGB)  {
  91          /* only need to cover the formats recognized by dri_fill_st_visual */
  92          switch (internal_format) {
  93          case PIPE_FORMAT_B8G8R8A8_UNORM:
  94             internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
  95             break;
  96          case PIPE_FORMAT_A8R8G8B8_UNORM:
  97             internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
  98             break;
  99          default:
 100             break;
 101          }
 102       }
 103
 104       ctx->st->teximage(ctx->st,
 105             (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
 106             0, internal_format, pt, FALSE);
 107    }
 108 }
 109
 110 static void
 111 dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 112                     __DRIdrawable *dPriv)
 113 {
 114    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 115 }
 116
 117 static const __DRItexBufferExtension dri2TexBufferExtension = {
 118     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 119    dri2_set_tex_buffer,
 120    dri2_set_tex_buffer2,
 121 };
 122
 123 /**
 124  * Get the format and binding of an attachment.
 125  */
 126 static INLINE void
 127 dri2_drawable_get_format(struct dri_drawable *drawable,
 128                          enum st_attachment_type statt,
 129                          enum pipe_format *format,
 130                          unsigned *bind)
 131 {
 132    switch (statt) {
 133    case ST_ATTACHMENT_FRONT_LEFT:
 134    case ST_ATTACHMENT_BACK_LEFT:
 135    case ST_ATTACHMENT_FRONT_RIGHT:
 136    case ST_ATTACHMENT_BACK_RIGHT:
 137       *format = drawable->stvis.color_format;
 138       *bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 139       break;
 140    case ST_ATTACHMENT_DEPTH_STENCIL:
 141       *format = drawable->stvis.depth_stencil_format;
 142       *bind = PIPE_BIND_DEPTH_STENCIL; /* XXX sampler? */
 143       break;
 144    default:
 145       *format = PIPE_FORMAT_NONE;
 146       *bind = 0;
 147       break;
 148    }
 149 }
 150
 151
 152 /**
 153  * Retrieve __DRIbuffer from the DRI loader.
 154  */
 155 static __DRIbuffer *
 156 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 157                           const enum st_attachment_type *statts,
 158                           unsigned *count)
 159 {
 160    __DRIdrawable *dri_drawable = drawable->dPriv;
 161    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
 162    boolean with_format;
 163    __DRIbuffer *buffers;
 164    int num_buffers;
 165    unsigned attachments[10];
 166    unsigned num_attachments, i;
 167
 168    assert(loader);
 169    with_format = dri_with_format(drawable->sPriv);
 170
 171    num_attachments = 0;
 172
 173    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 174    if (!with_format)
 175       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 176
 177    for (i = 0; i < *count; i++) {
 178       enum pipe_format format;
 179       unsigned bind;
 180       int att, bpp;
 181
 182       dri2_drawable_get_format(drawable, statts[i], &format, &bind);
 183       if (format == PIPE_FORMAT_NONE)
 184          continue;
 185
 186       switch (statts[i]) {
 187       case ST_ATTACHMENT_FRONT_LEFT:
 188          /* already added */
 189          if (!with_format)
 190             continue;
 191          att = __DRI_BUFFER_FRONT_LEFT;
 192          break;
 193       case ST_ATTACHMENT_BACK_LEFT:
 194          att = __DRI_BUFFER_BACK_LEFT;
 195          break;
 196       case ST_ATTACHMENT_FRONT_RIGHT:
 197          att = __DRI_BUFFER_FRONT_RIGHT;
 198          break;
 199       case ST_ATTACHMENT_BACK_RIGHT:
 200          att = __DRI_BUFFER_BACK_RIGHT;
 201          break;
 202       case ST_ATTACHMENT_DEPTH_STENCIL:
 203          att = __DRI_BUFFER_DEPTH_STENCIL;
 204          break;
 205       default:
 206          att = -1;
 207          break;
 208       }
 209
 210       bpp = util_format_get_blocksizebits(format);
 211
 212       if (att >= 0) {
 213          attachments[num_attachments++] = att;
 214          if (with_format) {
 215             attachments[num_attachments++] = bpp;
 216          }
 217       }
 218    }
 219
 220    if (with_format) {
 221       num_attachments /= 2;
 222       buffers = loader->getBuffersWithFormat(dri_drawable,
 223             &dri_drawable->w, &dri_drawable->h,
 224             attachments, num_attachments,
 225             &num_buffers, dri_drawable->loaderPrivate);
 226    }
 227    else {
 228       buffers = loader->getBuffers(dri_drawable,
 229             &dri_drawable->w, &dri_drawable->h,
 230             attachments, num_attachments,
 231             &num_buffers, dri_drawable->loaderPrivate);
 232    }
 233
 234    if (buffers) {
 235       /* set one cliprect to cover the whole dri_drawable */
 236       dri_drawable->x = 0;
 237       dri_drawable->y = 0;
 238       dri_drawable->backX = 0;
 239       dri_drawable->backY = 0;
 240       dri_drawable->numClipRects = 1;
 241       dri_drawable->pClipRects[0].x1 = 0;
 242       dri_drawable->pClipRects[0].y1 = 0;
 243       dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 244       dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 245       dri_drawable->numBackClipRects = 1;
 246       dri_drawable->pBackClipRects[0].x1 = 0;
 247       dri_drawable->pBackClipRects[0].y1 = 0;
 248       dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 249       dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 250
 251       *count = num_buffers;
 252    }
 253
 254    return buffers;
 255 }
 256
 257 /**
 258  * Process __DRIbuffer and convert them into pipe_resources.
 259  */
 260 static void
 261 dri2_drawable_process_buffers(struct dri_drawable *drawable,
 262                               __DRIbuffer *buffers, unsigned count)
 263 {
 264    struct dri_screen *screen = dri_screen(drawable->sPriv);
 265    __DRIdrawable *dri_drawable = drawable->dPriv;
 266    struct pipe_resource templ;
 267    struct winsys_handle whandle;
 268    boolean have_depth = FALSE;
 269    unsigned i, bind;
 270
 271    if (drawable->old_num == count &&
 272        drawable->old_w == dri_drawable->w &&
 273        drawable->old_h == dri_drawable->h &&
 274        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
 275       return;
 276
 277    for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 278       pipe_resource_reference(&drawable->textures[i], NULL);
 279
 280    memset(&templ, 0, sizeof(templ));
 281    templ.target = PIPE_TEXTURE_2D;
 282    templ.last_level = 0;
 283    templ.width0 = dri_drawable->w;
 284    templ.height0 = dri_drawable->h;
 285    templ.depth0 = 1;
 286
 287    memset(&whandle, 0, sizeof(whandle));
 288
 289    for (i = 0; i < count; i++) {
 290       __DRIbuffer *buf = &buffers[i];
 291       enum st_attachment_type statt;
 292       enum pipe_format format;
 293
 294       switch (buf->attachment) {
 295       case __DRI_BUFFER_FRONT_LEFT:
 296          if (!screen->auto_fake_front) {
 297             statt = ST_ATTACHMENT_INVALID;
 298             break;
 299          }
 300          /* fallthrough */
 301       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 302          statt = ST_ATTACHMENT_FRONT_LEFT;
 303          break;
 304       case __DRI_BUFFER_BACK_LEFT:
 305          statt = ST_ATTACHMENT_BACK_LEFT;
 306          break;
 307       case __DRI_BUFFER_DEPTH:
 308       case __DRI_BUFFER_DEPTH_STENCIL:
 309       case __DRI_BUFFER_STENCIL:
 310          /* use only the first depth/stencil buffer */
 311          if (!have_depth) {
 312             have_depth = TRUE;
 313             statt = ST_ATTACHMENT_DEPTH_STENCIL;
 314          }
 315          else {
 316             statt = ST_ATTACHMENT_INVALID;
 317          }
 318          break;
 319       default:
 320          statt = ST_ATTACHMENT_INVALID;
 321          break;
 322       }
 323
 324       dri2_drawable_get_format(drawable, statt, &format, &bind);
 325       if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
 326          continue;
 327
 328       templ.format = format;
 329       templ.bind = bind;
 330       whandle.handle = buf->name;
 331       whandle.stride = buf->pitch;
 332
 333       drawable->textures[statt] =
 334          screen->base.screen->resource_from_handle(screen->base.screen,
 335                &templ, &whandle);
 336    }
 337
 338    drawable->old_num = count;
 339    drawable->old_w = dri_drawable->w;
 340    drawable->old_h = dri_drawable->h;
 341    memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 342 }
 343
 344 /*
 345  * Backend functions for st_framebuffer interface.
 346  */
 347
 348 static void
 349 dri2_allocate_textures(struct dri_drawable *drawable,
 350                        const enum st_attachment_type *statts,
 351                        unsigned count)
 352 {
 353    __DRIbuffer *buffers;
 354    unsigned num_buffers = count;
 355
 356    buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 357    dri2_drawable_process_buffers(drawable, buffers, num_buffers);
 358 }
 359
 360 static void
 361 dri2_flush_frontbuffer(struct dri_drawable *drawable,
 362                        enum st_attachment_type statt)
 363 {
 364    __DRIdrawable *dri_drawable = drawable->dPriv;
 365    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
 366
 367    if (loader->flushFrontBuffer == NULL)
 368       return;
 369
 370    if (statt == ST_ATTACHMENT_FRONT_LEFT) {
 371       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 372    }
 373 }
 374
 375 static __DRIimage *
 376 dri2_lookup_egl_image(struct dri_context *ctx, void *handle)
 377 {
 378    __DRIimageLookupExtension *loader = ctx->sPriv->dri2.image;
 379    __DRIimage *img;
 380
 381    if (!loader->lookupEGLImage)
 382       return NULL;
 383
 384    img = loader->lookupEGLImage(ctx->cPriv, handle, ctx->cPriv->loaderPrivate);
 385
 386    return img;
 387 }
 388
 389 static __DRIimage *
 390 dri2_create_image_from_name(__DRIcontext *context,
 391                             int width, int height, int format,
 392                             int name, int pitch, void *loaderPrivate)
 393 {
 394    struct dri_screen *screen = dri_screen(context->driScreenPriv);
 395    __DRIimage *img;
 396    struct pipe_resource templ;
 397    struct winsys_handle whandle;
 398    unsigned tex_usage;
 399    enum pipe_format pf;
 400
 401    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 402
 403    switch (format) {
 404    case __DRI_IMAGE_FORMAT_RGB565:
 405       pf = PIPE_FORMAT_B5G6R5_UNORM;
 406       break;
 407    case __DRI_IMAGE_FORMAT_XRGB8888:
 408       pf = PIPE_FORMAT_B8G8R8X8_UNORM;
 409       break;
 410    case __DRI_IMAGE_FORMAT_ARGB8888:
 411       pf = PIPE_FORMAT_B8G8R8A8_UNORM;
 412       break;
 413    default:
 414       pf = PIPE_FORMAT_NONE;
 415       break;
 416    }
 417    if (pf == PIPE_FORMAT_NONE)
 418       return NULL;
 419
 420    img = CALLOC_STRUCT(__DRIimageRec);
 421    if (!img)
 422       return NULL;
 423
 424    memset(&templ, 0, sizeof(templ));
 425    templ.bind = tex_usage;
 426    templ.format = pf;
 427    templ.target = PIPE_TEXTURE_2D;
 428    templ.last_level = 0;
 429    templ.width0 = width;
 430    templ.height0 = height;
 431    templ.depth0 = 1;
 432
 433    memset(&whandle, 0, sizeof(whandle));
 434    whandle.handle = name;
 435    whandle.stride = pitch * util_format_get_blocksize(pf);
 436
 437    img->texture = screen->base.screen->resource_from_handle(screen->base.screen,
 438          &templ, &whandle);
 439    if (!img->texture) {
 440       FREE(img);
 441       return NULL;
 442    }
 443
 444    img->face = 0;
 445    img->level = 0;
 446    img->zslice = 0;
 447    img->loader_private = loaderPrivate;
 448
 449    return img;
 450 }
 451
 452 static __DRIimage *
 453 dri2_create_image_from_renderbuffer(__DRIcontext *context,
 454                                     int renderbuffer, void *loaderPrivate)
 455 {
 456    struct dri_context *ctx = dri_context(context->driverPrivate);
 457
 458    if (!ctx->st->get_resource_for_egl_image)
 459       return NULL;
 460
 461    /* TODO */
 462    return NULL;
 463 }
 464
 465 static void
 466 dri2_destroy_image(__DRIimage *img)
 467 {
 468    pipe_resource_reference(&img->texture, NULL);
 469    FREE(img);
 470 }
 471
 472 static struct __DRIimageExtensionRec dri2ImageExtension = {
 473     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 474     dri2_create_image_from_name,
 475     dri2_create_image_from_renderbuffer,
 476     dri2_destroy_image,
 477 };
 478
 479 /*
 480  * Backend function init_screen.
 481  */
 482
 483 static const __DRIextension *dri_screen_extensions[] = {
 484    &driReadDrawableExtension,
 485    &driCopySubBufferExtension.base,
 486    &driSwapControlExtension.base,
 487    &driFrameTrackingExtension.base,
 488    &driMediaStreamCounterExtension.base,
 489    &dri2TexBufferExtension.base,
 490    &dri2FlushExtension.base,
 491    &dri2ImageExtension.base,
 492    NULL
 493 };
 494
 495 /**
 496  * This is the driver specific part of the createNewScreen entry point.
 497  *
 498  * Returns the __GLcontextModes supported by this driver.
 499  */
 500 const __DRIconfig **
 501 dri2_init_screen(__DRIscreen * sPriv)
 502 {
 503    const __DRIconfig **configs;
 504    struct dri_screen *screen;
 505    struct pipe_screen *pscreen;
 506
 507    screen = CALLOC_STRUCT(dri_screen);
 508    if (!screen)
 509       return NULL;
 510
 511    screen->api = drm_api_create();
 512    screen->sPriv = sPriv;
 513    screen->fd = sPriv->fd;
 514    screen->lookup_egl_image = dri2_lookup_egl_image;
 515    screen->allocate_textures = dri2_allocate_textures;
 516    screen->flush_frontbuffer = dri2_flush_frontbuffer;
 517
 518    sPriv->private = (void *)screen;
 519    sPriv->extensions = dri_screen_extensions;
 520
 521    pscreen = screen->api->create_screen(screen->api, screen->fd);
 522    /* dri_init_screen_helper checks pscreen for us */
 523
 524    configs = dri_init_screen_helper(screen, pscreen, 32);
 525    if (!configs)
 526       goto fail;
 527
 528    screen->auto_fake_front = dri_with_format(sPriv);
 529    screen->broken_invalidate = !sPriv->dri2.useInvalidate;
 530
 531    return configs;
 532 fail:
 533    dri_destroy_screen_helper(screen);
 534    FREE(screen);
 535    return NULL;
 536 }
 537
 538 /* This is the table of extensions that the loader will dlsym() for. */
 539 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 540     &driCoreExtension.base,
 541     &driLegacyExtension.base,
 542     &driDRI2Extension.base,
 543     NULL
 544 };
 545
 546 /* vim: set sw=3 ts=8 sts=3 expandtab: */