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 "dri_st_api.h"
  42 #include "dri2.h"
  43
  44 /**
  45  * DRI2 flush extension.
  46  */
  47 static void
  48 dri2_flush_drawable(__DRIdrawable *draw)
  49 {
  50 }
  51
  52 static void
  53 dri2_invalidate_drawable(__DRIdrawable *dPriv)
  54 {
  55    struct dri_drawable *drawable = dri_drawable(dPriv);
  56    struct dri_context *ctx = dri_context(dPriv->driContextPriv);
  57
  58    dri2InvalidateDrawable(dPriv);
  59    drawable->dPriv->lastStamp = *drawable->dPriv->pStamp;
  60
  61    if (ctx)
  62       ctx->st->notify_invalid_framebuffer(ctx->st, drawable->stfb);
  63 }
  64
  65 static const __DRI2flushExtension dri2FlushExtension = {
  66     { __DRI2_FLUSH, __DRI2_FLUSH_VERSION },
  67     dri2_flush_drawable,
  68     dri2_invalidate_drawable,
  69 };
  70
  71 /**
  72  * These are used for GLX_EXT_texture_from_pixmap
  73  */
  74 static void
  75 dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
  76                      GLint format, __DRIdrawable *dPriv)
  77 {
  78    struct dri_context *ctx = dri_context(pDRICtx);
  79    struct dri_drawable *drawable = dri_drawable(dPriv);
  80    struct pipe_resource *pt;
  81
  82    dri_st_framebuffer_validate_att(drawable->stfb, ST_ATTACHMENT_FRONT_LEFT);
  83
  84    pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
  85
  86    if (pt) {
  87       enum pipe_format internal_format = pt->format;
  88
  89       if (format == __DRI_TEXTURE_FORMAT_RGB)  {
  90          /* only need to cover the formats recognized by dri_fill_st_visual */
  91          switch (internal_format) {
  92          case PIPE_FORMAT_B8G8R8A8_UNORM:
  93             internal_format = PIPE_FORMAT_B8G8R8X8_UNORM;
  94             break;
  95          case PIPE_FORMAT_A8R8G8B8_UNORM:
  96             internal_format = PIPE_FORMAT_X8R8G8B8_UNORM;
  97             break;
  98          default:
  99             break;
 100          }
 101       }
 102
 103       ctx->st->teximage(ctx->st,
 104             (target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
 105             0, internal_format, pt, FALSE);
 106    }
 107 }
 108
 109 static void
 110 dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
 111                     __DRIdrawable *dPriv)
 112 {
 113    dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
 114 }
 115
 116 static const __DRItexBufferExtension dri2TexBufferExtension = {
 117     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 118    dri2_set_tex_buffer,
 119    dri2_set_tex_buffer2,
 120 };
 121
 122 /**
 123  * Get the format of an attachment.
 124  */
 125 static INLINE enum pipe_format
 126 dri2_drawable_get_format(struct dri_drawable *drawable,
 127                          enum st_attachment_type statt)
 128 {
 129    enum pipe_format format;
 130
 131    switch (statt) {
 132    case ST_ATTACHMENT_FRONT_LEFT:
 133    case ST_ATTACHMENT_BACK_LEFT:
 134    case ST_ATTACHMENT_FRONT_RIGHT:
 135    case ST_ATTACHMENT_BACK_RIGHT:
 136       format = drawable->stvis.color_format;
 137       break;
 138    case ST_ATTACHMENT_DEPTH_STENCIL:
 139       format = drawable->stvis.depth_stencil_format;
 140       break;
 141    default:
 142       format = PIPE_FORMAT_NONE;
 143       break;
 144    }
 145
 146    return format;
 147 }
 148
 149
 150 /**
 151  * Retrieve __DRIbuffer from the DRI loader.
 152  */
 153 static __DRIbuffer *
 154 dri2_drawable_get_buffers(struct dri_drawable *drawable,
 155                           const enum st_attachment_type *statts,
 156                           unsigned *count)
 157 {
 158    __DRIdrawable *dri_drawable = drawable->dPriv;
 159    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
 160    boolean with_format;
 161    __DRIbuffer *buffers;
 162    int num_buffers;
 163    unsigned attachments[10];
 164    unsigned num_attachments, i;
 165
 166    assert(loader);
 167    with_format = dri_with_format(drawable->sPriv);
 168
 169    num_attachments = 0;
 170
 171    /* for Xserver 1.6.0 (DRI2 version 1) we always need to ask for the front */
 172    if (!with_format)
 173       attachments[num_attachments++] = __DRI_BUFFER_FRONT_LEFT;
 174
 175    for (i = 0; i < *count; i++) {
 176       enum pipe_format format;
 177       int att, bpp;
 178
 179       format = dri2_drawable_get_format(drawable, statts[i]);
 180       if (format == PIPE_FORMAT_NONE)
 181          continue;
 182
 183       switch (statts[i]) {
 184       case ST_ATTACHMENT_FRONT_LEFT:
 185          /* already added */
 186          if (!with_format)
 187             continue;
 188          att = __DRI_BUFFER_FRONT_LEFT;
 189          break;
 190       case ST_ATTACHMENT_BACK_LEFT:
 191          att = __DRI_BUFFER_BACK_LEFT;
 192          break;
 193       case ST_ATTACHMENT_FRONT_RIGHT:
 194          att = __DRI_BUFFER_FRONT_RIGHT;
 195          break;
 196       case ST_ATTACHMENT_BACK_RIGHT:
 197          att = __DRI_BUFFER_BACK_RIGHT;
 198          break;
 199       case ST_ATTACHMENT_DEPTH_STENCIL:
 200          att = __DRI_BUFFER_DEPTH_STENCIL;
 201          break;
 202       default:
 203          att = -1;
 204          break;
 205       }
 206
 207       bpp = util_format_get_blocksizebits(format);
 208
 209       if (att >= 0) {
 210          attachments[num_attachments++] = att;
 211          if (with_format) {
 212             attachments[num_attachments++] = bpp;
 213          }
 214       }
 215    }
 216
 217    if (with_format) {
 218       num_attachments /= 2;
 219       buffers = loader->getBuffersWithFormat(dri_drawable,
 220             &dri_drawable->w, &dri_drawable->h,
 221             attachments, num_attachments,
 222             &num_buffers, dri_drawable->loaderPrivate);
 223    }
 224    else {
 225       buffers = loader->getBuffers(dri_drawable,
 226             &dri_drawable->w, &dri_drawable->h,
 227             attachments, num_attachments,
 228             &num_buffers, dri_drawable->loaderPrivate);
 229    }
 230
 231    if (buffers) {
 232       /* set one cliprect to cover the whole dri_drawable */
 233       dri_drawable->x = 0;
 234       dri_drawable->y = 0;
 235       dri_drawable->backX = 0;
 236       dri_drawable->backY = 0;
 237       dri_drawable->numClipRects = 1;
 238       dri_drawable->pClipRects[0].x1 = 0;
 239       dri_drawable->pClipRects[0].y1 = 0;
 240       dri_drawable->pClipRects[0].x2 = dri_drawable->w;
 241       dri_drawable->pClipRects[0].y2 = dri_drawable->h;
 242       dri_drawable->numBackClipRects = 1;
 243       dri_drawable->pBackClipRects[0].x1 = 0;
 244       dri_drawable->pBackClipRects[0].y1 = 0;
 245       dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
 246       dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
 247
 248       *count = num_buffers;
 249    }
 250
 251    return buffers;
 252 }
 253
 254 /**
 255  * Process __DRIbuffer and convert them into pipe_resources.
 256  */
 257 static void
 258 dri2_drawable_process_buffers(struct dri_drawable *drawable,
 259                               __DRIbuffer *buffers, unsigned count)
 260 {
 261    struct dri_screen *screen = dri_screen(drawable->sPriv);
 262    __DRIdrawable *dri_drawable = drawable->dPriv;
 263    struct pipe_resource templ;
 264    struct winsys_handle whandle;
 265    boolean have_depth = FALSE;
 266    unsigned i;
 267
 268    if (drawable->old_num == count &&
 269        drawable->old_w == dri_drawable->w &&
 270        drawable->old_h == dri_drawable->h &&
 271        memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0)
 272       return;
 273
 274    for (i = 0; i < ST_ATTACHMENT_COUNT; i++)
 275       pipe_resource_reference(&drawable->textures[i], NULL);
 276
 277    memset(&templ, 0, sizeof(templ));
 278    templ.bind = PIPE_BIND_RENDER_TARGET;
 279    templ.target = PIPE_TEXTURE_2D;
 280    templ.last_level = 0;
 281    templ.width0 = dri_drawable->w;
 282    templ.height0 = dri_drawable->h;
 283    templ.depth0 = 1;
 284
 285    memset(&whandle, 0, sizeof(whandle));
 286
 287    for (i = 0; i < count; i++) {
 288       __DRIbuffer *buf = &buffers[i];
 289       enum st_attachment_type statt;
 290       enum pipe_format format;
 291
 292       switch (buf->attachment) {
 293       case __DRI_BUFFER_FRONT_LEFT:
 294          if (!screen->auto_fake_front) {
 295             statt = ST_ATTACHMENT_INVALID;
 296             break;
 297          }
 298          /* fallthrough */
 299       case __DRI_BUFFER_FAKE_FRONT_LEFT:
 300          statt = ST_ATTACHMENT_FRONT_LEFT;
 301          break;
 302       case __DRI_BUFFER_BACK_LEFT:
 303          statt = ST_ATTACHMENT_BACK_LEFT;
 304          break;
 305       case __DRI_BUFFER_DEPTH:
 306       case __DRI_BUFFER_DEPTH_STENCIL:
 307       case __DRI_BUFFER_STENCIL:
 308          /* use only the first depth/stencil buffer */
 309          if (!have_depth) {
 310             have_depth = TRUE;
 311             statt = ST_ATTACHMENT_DEPTH_STENCIL;
 312          }
 313          else {
 314             statt = ST_ATTACHMENT_INVALID;
 315          }
 316          break;
 317       default:
 318          statt = ST_ATTACHMENT_INVALID;
 319          break;
 320       }
 321
 322       format = dri2_drawable_get_format(drawable, statt);
 323       if (statt == ST_ATTACHMENT_INVALID || format == PIPE_FORMAT_NONE)
 324          continue;
 325
 326       templ.format = format;
 327       whandle.handle = buf->name;
 328       whandle.stride = buf->pitch;
 329
 330       drawable->textures[statt] =
 331          screen->pipe_screen->resource_from_handle(screen->pipe_screen,
 332                &templ, &whandle);
 333    }
 334
 335    drawable->old_num = count;
 336    drawable->old_w = dri_drawable->w;
 337    drawable->old_h = dri_drawable->h;
 338    memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
 339 }
 340
 341 /*
 342  * Backend functions for st_framebuffer interface.
 343  */
 344
 345 void
 346 dri2_allocate_textures(struct dri_drawable *drawable,
 347                        const enum st_attachment_type *statts,
 348                        unsigned count)
 349 {
 350    __DRIbuffer *buffers;
 351    unsigned num_buffers = count;
 352
 353    buffers = dri2_drawable_get_buffers(drawable, statts, &num_buffers);
 354    dri2_drawable_process_buffers(drawable, buffers, num_buffers);
 355 }
 356
 357 void
 358 dri2_flush_frontbuffer(struct dri_drawable *drawable,
 359                        enum st_attachment_type statt)
 360 {
 361    __DRIdrawable *dri_drawable = drawable->dPriv;
 362    struct __DRIdri2LoaderExtensionRec *loader = drawable->sPriv->dri2.loader;
 363
 364    if (loader->flushFrontBuffer == NULL)
 365       return;
 366
 367    if (statt == ST_ATTACHMENT_FRONT_LEFT) {
 368       loader->flushFrontBuffer(dri_drawable, dri_drawable->loaderPrivate);
 369    }
 370 }
 371
 372 __DRIimage *
 373 dri2_lookup_egl_image(struct dri_context *ctx, void *handle)
 374 {
 375    __DRIimageLookupExtension *loader = ctx->sPriv->dri2.image;
 376    __DRIimage *img;
 377
 378    if (!loader->lookupEGLImage)
 379       return NULL;
 380
 381    img = loader->lookupEGLImage(ctx->cPriv, handle, ctx->cPriv->loaderPrivate);
 382
 383    return img;
 384 }
 385
 386 static __DRIimage *
 387 dri2_create_image_from_name(__DRIcontext *context,
 388                             int width, int height, int format,
 389                             int name, int pitch, void *loaderPrivate)
 390 {
 391    struct dri_screen *screen = dri_screen(context->driScreenPriv);
 392    __DRIimage *img;
 393    struct pipe_resource templ;
 394    struct winsys_handle whandle;
 395    unsigned tex_usage;
 396    enum pipe_format pf;
 397
 398    tex_usage = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
 399
 400    switch (format) {
 401    case __DRI_IMAGE_FORMAT_RGB565:
 402       pf = PIPE_FORMAT_B5G6R5_UNORM;
 403       break;
 404    case __DRI_IMAGE_FORMAT_XRGB8888:
 405       pf = PIPE_FORMAT_B8G8R8X8_UNORM;
 406       break;
 407    case __DRI_IMAGE_FORMAT_ARGB8888:
 408       pf = PIPE_FORMAT_B8G8R8A8_UNORM;
 409       break;
 410    default:
 411       pf = PIPE_FORMAT_NONE;
 412       break;
 413    }
 414    if (pf == PIPE_FORMAT_NONE)
 415       return NULL;
 416
 417    img = CALLOC_STRUCT(__DRIimageRec);
 418    if (!img)
 419       return NULL;
 420
 421    memset(&templ, 0, sizeof(templ));
 422    templ.bind = tex_usage;
 423    templ.format = pf;
 424    templ.target = PIPE_TEXTURE_2D;
 425    templ.last_level = 0;
 426    templ.width0 = width;
 427    templ.height0 = height;
 428    templ.depth0 = 1;
 429
 430    memset(&whandle, 0, sizeof(whandle));
 431    whandle.handle = name;
 432    whandle.stride = pitch * util_format_get_blocksize(pf);
 433
 434    img->texture = screen->pipe_screen->resource_from_handle(screen->pipe_screen,
 435          &templ, &whandle);
 436    if (!img->texture) {
 437       FREE(img);
 438       return NULL;
 439    }
 440
 441    img->face = 0;
 442    img->level = 0;
 443    img->zslice = 0;
 444    img->loader_private = loaderPrivate;
 445
 446    return img;
 447 }
 448
 449 static __DRIimage *
 450 dri2_create_image_from_renderbuffer(__DRIcontext *context,
 451                                     int renderbuffer, void *loaderPrivate)
 452 {
 453    struct dri_context *ctx = dri_context(context->driverPrivate);
 454
 455    if (!ctx->st->get_resource_for_egl_image)
 456       return NULL;
 457
 458    /* TODO */
 459    return NULL;
 460 }
 461
 462 static void
 463 dri2_destroy_image(__DRIimage *img)
 464 {
 465    pipe_resource_reference(&img->texture, NULL);
 466    FREE(img);
 467 }
 468
 469 static struct __DRIimageExtensionRec dri2ImageExtension = {
 470     { __DRI_IMAGE, __DRI_IMAGE_VERSION },
 471     dri2_create_image_from_name,
 472     dri2_create_image_from_renderbuffer,
 473     dri2_destroy_image,
 474 };
 475
 476 /*
 477  * Backend function init_screen.
 478  */
 479
 480 static const __DRIextension *dri_screen_extensions[] = {
 481    &driReadDrawableExtension,
 482    &driCopySubBufferExtension.base,
 483    &driSwapControlExtension.base,
 484    &driFrameTrackingExtension.base,
 485    &driMediaStreamCounterExtension.base,
 486    &dri2TexBufferExtension.base,
 487    &dri2FlushExtension.base,
 488    &dri2ImageExtension.base,
 489    NULL
 490 };
 491
 492 /**
 493  * This is the driver specific part of the createNewScreen entry point.
 494  *
 495  * Returns the __GLcontextModes supported by this driver.
 496  */
 497 const __DRIconfig **
 498 dri2_init_screen(__DRIscreen * sPriv)
 499 {
 500    const __DRIconfig **configs;
 501    struct dri_screen *screen;
 502    struct drm_create_screen_arg arg;
 503
 504    screen = CALLOC_STRUCT(dri_screen);
 505    if (!screen)
 506       return NULL;
 507
 508    screen->api = drm_api_create();
 509    screen->sPriv = sPriv;
 510    screen->fd = sPriv->fd;
 511
 512    sPriv->private = (void *)screen;
 513    sPriv->extensions = dri_screen_extensions;
 514
 515    arg.mode = DRM_CREATE_NORMAL;
 516
 517    configs = dri_init_screen_helper(screen, &arg, 32);
 518    if (!configs)
 519       goto fail;
 520
 521    screen->auto_fake_front = dri_with_format(sPriv);
 522
 523    return configs;
 524 fail:
 525    dri_destroy_screen_helper(screen);
 526    FREE(screen);
 527    return NULL;
 528 }
 529
 530 /* This is the table of extensions that the loader will dlsym() for. */
 531 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 532     &driCoreExtension.base,
 533     &driLegacyExtension.base,
 534     &driDRI2Extension.base,
 535     NULL
 536 };
 537
 538 /* vim: set sw=3 ts=8 sts=3 expandtab: */