src/gallium/state_trackers/egl/egl_surface.c

   1
   2 #include <stdlib.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include "egl_tracker.h"
   6
   7 #include "egllog.h"
   8
   9 #include "pipe/p_inlines.h"
  10 #include "pipe/p_screen.h"
  11 #include "pipe/p_context.h"
  12
  13 #include "state_tracker/drm_api.h"
  14
  15 /*
  16  * Util functions
  17  */
  18
  19 static struct drm_mode_modeinfo *
  20 drm_find_mode(drmModeConnectorPtr connector, _EGLMode *mode)
  21 {
  22         int i;
  23         struct drm_mode_modeinfo *m = NULL;
  24
  25         for (i = 0; i < connector->count_modes; i++) {
  26                 m = &connector->modes[i];
  27                 if (m->hdisplay == mode->Width && m->vdisplay == mode->Height && m->vrefresh == mode->RefreshRate)
  28                         break;
  29                 m = &connector->modes[0]; /* if we can't find one, return first */
  30         }
  31
  32         return m;
  33 }
  34
  35 static struct st_framebuffer *
  36 drm_create_framebuffer(const __GLcontextModes *visual,
  37                        unsigned width,
  38                        unsigned height,
  39                        void *priv)
  40 {
  41         enum pipe_format colorFormat, depthFormat, stencilFormat;
  42
  43         if (visual->redBits == 5)
  44                 colorFormat = PIPE_FORMAT_R5G6B5_UNORM;
  45         else
  46                 colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
  47
  48         if (visual->depthBits == 16)
  49                 depthFormat = PIPE_FORMAT_Z16_UNORM;
  50         else if (visual->depthBits == 24)
  51                 depthFormat = PIPE_FORMAT_S8Z24_UNORM;
  52         else
  53                 depthFormat = PIPE_FORMAT_NONE;
  54
  55         if (visual->stencilBits == 8)
  56                 stencilFormat = PIPE_FORMAT_S8Z24_UNORM;
  57         else
  58                 stencilFormat = PIPE_FORMAT_NONE;
  59
  60         return st_create_framebuffer(visual,
  61                                      colorFormat,
  62                                      depthFormat,
  63                                      stencilFormat,
  64                                      width,
  65                                      height,
  66                                      priv);
  67 }
  68
  69 static void
  70 drm_create_texture(_EGLDriver *drv,
  71                    struct drm_screen *scrn,
  72                    unsigned w, unsigned h)
  73 {
  74         struct drm_device *dev = (struct drm_device *)drv;
  75         struct pipe_screen *screen = dev->screen;
  76         struct pipe_surface *surface;
  77         struct pipe_texture *texture;
  78         struct pipe_texture templat;
  79         struct pipe_buffer *buf;
  80         unsigned stride = 1024;
  81         unsigned pitch = 0;
  82         unsigned size = 0;
  83
  84         /* ugly */
  85         if (stride < w)
  86                 stride = 2048;
  87
  88         pitch = stride * 4;
  89         size = h * 2 * pitch;
  90
  91         buf = pipe_buffer_create(screen,
  92                                  0, /* alignment */
  93                                  PIPE_BUFFER_USAGE_GPU_READ_WRITE |
  94                                  PIPE_BUFFER_USAGE_CPU_READ_WRITE,
  95                                  size);
  96
  97         if (!buf)
  98                 goto err_buf;
  99
 100         memset(&templat, 0, sizeof(templat));
 101         templat.tex_usage |= PIPE_TEXTURE_USAGE_DISPLAY_TARGET;
 102         templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
 103         templat.target = PIPE_TEXTURE_2D;
 104         templat.last_level = 0;
 105         templat.depth[0] = 1;
 106         templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
 107         templat.width[0] = w;
 108         templat.height[0] = h;
 109         pf_get_block(templat.format, &templat.block);
 110
 111         texture = screen->texture_blanket(dev->screen,
 112                                           &templat,
 113                                           &pitch,
 114                                           buf);
 115         if (!texture)
 116                 goto err_tex;
 117
 118         surface = screen->get_tex_surface(screen,
 119                                           texture,
 120                                           0,
 121                                           0,
 122                                           0,
 123                                           PIPE_BUFFER_USAGE_GPU_WRITE);
 124
 125         if (!surface)
 126                 goto err_surf;
 127
 128
 129         scrn->tex = texture;
 130         scrn->surface = surface;
 131         scrn->buffer = buf;
 132         scrn->front.width = w;
 133         scrn->front.height = h;
 134         scrn->front.pitch = pitch;
 135         scrn->front.handle = drm_api_hocks.handle_from_buffer(dev->winsys, scrn->buffer);
 136         if (0)
 137                 goto err_handle;
 138
 139         return;
 140
 141 err_handle:
 142         pipe_surface_reference(&surface, NULL);
 143 err_surf:
 144         pipe_texture_reference(&texture, NULL);
 145 err_tex:
 146         pipe_buffer_reference(screen, &buf, NULL);
 147 err_buf:
 148         return;
 149 }
 150
 151 /*
 152  * Exported functions
 153  */
 154
 155 void
 156 drm_takedown_shown_screen(_EGLDriver *drv, struct drm_screen *screen)
 157 {
 158         struct drm_device *dev = (struct drm_device *)drv;
 159
 160         screen->surf = NULL;
 161
 162         drmModeSetCrtc(
 163                 dev->drmFD,
 164                 screen->crtcID,
 165                 0, // FD
 166                 0, 0,
 167                 NULL, 0, // List of output ids
 168                 NULL);
 169
 170         drmModeRmFB(dev->drmFD, screen->fbID);
 171         drmModeFreeFB(screen->fb);
 172         screen->fb = NULL;
 173
 174         pipe_surface_reference(&screen->surface, NULL);
 175         pipe_texture_reference(&screen->tex, NULL);
 176         pipe_buffer_reference(dev->screen, &screen->buffer, NULL);
 177
 178         screen->shown = 0;
 179 }
 180
 181 EGLSurface
 182 drm_create_window_surface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativeWindowType window, const EGLint *attrib_list)
 183 {
 184         return EGL_NO_SURFACE;
 185 }
 186
 187
 188 EGLSurface
 189 drm_create_pixmap_surface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config, NativePixmapType pixmap, const EGLint *attrib_list)
 190 {
 191         return EGL_NO_SURFACE;
 192 }
 193
 194
 195 EGLSurface
 196 drm_create_pbuffer_surface(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
 197                            const EGLint *attrib_list)
 198 {
 199         int i;
 200         int width = -1;
 201         int height = -1;
 202         struct drm_surface *surf = NULL;
 203         __GLcontextModes *visual;
 204         _EGLConfig *conf;
 205
 206         conf = _eglLookupConfig(drv, dpy, config);
 207         if (!conf) {
 208                 _eglError(EGL_BAD_CONFIG, "eglCreatePbufferSurface");
 209                 return EGL_NO_CONTEXT;
 210         }
 211
 212         for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
 213                 switch (attrib_list[i]) {
 214                         case EGL_WIDTH:
 215                                 width = attrib_list[++i];
 216                                 break;
 217                         case EGL_HEIGHT:
 218                                 height = attrib_list[++i];
 219                                 break;
 220                         default:
 221                                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 222                                 return EGL_NO_SURFACE;
 223                 }
 224         }
 225
 226         if (width < 1 || height < 1) {
 227                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 228                 return EGL_NO_SURFACE;
 229         }
 230
 231         surf = (struct drm_surface *) calloc(1, sizeof(struct drm_surface));
 232         if (!surf)
 233                 goto err;
 234
 235         if (!_eglInitSurface(drv, dpy, &surf->base, EGL_PBUFFER_BIT, config, attrib_list))
 236                 goto err_surf;
 237
 238         surf->w = width;
 239         surf->h = height;
 240
 241         visual = drm_visual_from_config(conf);
 242         surf->stfb = drm_create_framebuffer(visual,
 243                                             width,
 244                                             height,
 245                                             (void*)surf);
 246         drm_visual_modes_destroy(visual);
 247
 248         _eglSaveSurface(&surf->base);
 249         return surf->base.Handle;
 250
 251 err_surf:
 252         free(surf);
 253 err:
 254         return EGL_NO_SURFACE;
 255 }
 256
 257 EGLSurface
 258 drm_create_screen_surface_mesa(_EGLDriver *drv, EGLDisplay dpy, EGLConfig cfg,
 259                                const EGLint *attrib_list)
 260 {
 261         EGLSurface surf = drm_create_pbuffer_surface(drv, dpy, cfg, attrib_list);
 262
 263         return surf;
 264 }
 265
 266 EGLBoolean
 267 drm_show_screen_surface_mesa(_EGLDriver *drv, EGLDisplay dpy,
 268                              EGLScreenMESA screen,
 269                              EGLSurface surface, EGLModeMESA m)
 270 {
 271         struct drm_device *dev = (struct drm_device *)drv;
 272         struct drm_surface *surf = lookup_drm_surface(surface);
 273         struct drm_screen *scrn = lookup_drm_screen(dpy, screen);
 274         struct pipe_context *pipe;
 275         _EGLMode *mode = _eglLookupMode(dpy, m);
 276         int ret;
 277         unsigned int i, k;
 278
 279         if (scrn->shown)
 280                 drm_takedown_shown_screen(drv, scrn);
 281
 282
 283         drm_create_texture(drv, scrn, mode->Width, mode->Height);
 284         if (!scrn->buffer)
 285                 return EGL_FALSE;
 286
 287         ret = drmModeAddFB(dev->drmFD,
 288                            scrn->front.width, scrn->front.height,
 289                            32, 32, scrn->front.pitch,
 290                            scrn->front.handle,
 291                            &scrn->fbID);
 292
 293         if (ret)
 294                 goto err_bo;
 295
 296         scrn->fb = drmModeGetFB(dev->drmFD, scrn->fbID);
 297         if (!scrn->fb)
 298                 goto err_bo;
 299
 300         /* find a fitting crtc */
 301         {
 302                 drmModeConnector *con = scrn->connector;
 303
 304                 scrn->mode = drm_find_mode(con, mode);
 305                 if (!scrn->mode)
 306                         goto err_fb;
 307
 308                 for (k = 0; k < con->count_encoders; k++) {
 309                         drmModeEncoder *enc = drmModeGetEncoder(dev->drmFD, con->encoders[k]);
 310                         for (i = 0; i < dev->res->count_crtcs; i++) {
 311                                 if (enc->possible_crtcs & (1<<i)) {
 312                                         /* save the ID */
 313                                         scrn->crtcID = dev->res->crtcs[i];
 314
 315                                         /* skip the rest */
 316                                         i = dev->res->count_crtcs;
 317                                         k = dev->res->count_encoders;
 318                                 }
 319                         }
 320                         drmModeFreeEncoder(enc);
 321                 }
 322         }
 323
 324         ret = drmModeSetCrtc(dev->drmFD,
 325                              scrn->crtcID,
 326                              scrn->fbID,
 327                              0, 0,
 328                              &scrn->connectorID, 1,
 329                              scrn->mode);
 330
 331         if (ret)
 332                 goto err_crtc;
 333
 334         surf->screen = scrn;
 335
 336         scrn->surf = surf;
 337         scrn->shown = 1;
 338
 339         return EGL_TRUE;
 340
 341 err_crtc:
 342         scrn->crtcID = 0;
 343
 344 err_fb:
 345         drmModeRmFB(dev->drmFD, scrn->fbID);
 346         drmModeFreeFB(scrn->fb);
 347         scrn->fb = NULL;
 348
 349 err_bo:
 350         pipe_surface_reference(&scrn->surface, NULL);
 351         pipe_texture_reference(&scrn->tex, NULL);
 352         pipe_buffer_reference(dev->screen, &scrn->buffer, NULL);
 353
 354         return EGL_FALSE;
 355 }
 356
 357 EGLBoolean
 358 drm_destroy_surface(_EGLDriver *drv, EGLDisplay dpy, EGLSurface surface)
 359 {
 360         struct drm_surface *surf = lookup_drm_surface(surface);
 361         _eglRemoveSurface(&surf->base);
 362         if (surf->base.IsBound) {
 363                 surf->base.DeletePending = EGL_TRUE;
 364         } else {
 365                 if (surf->screen)
 366                         drm_takedown_shown_screen(drv, surf->screen);
 367                 st_unreference_framebuffer(surf->stfb);
 368                 free(surf);
 369         }
 370         return EGL_TRUE;
 371 }
 372
 373 EGLBoolean
 374 drm_swap_buffers(_EGLDriver *drv, EGLDisplay dpy, EGLSurface draw)
 375 {
 376         struct drm_surface *surf = lookup_drm_surface(draw);
 377         struct pipe_surface *back_surf;
 378
 379         if (!surf)
 380                 return EGL_FALSE;
 381
 382         /* error checking */
 383         if (!_eglSwapBuffers(drv, dpy, draw))
 384                 return EGL_FALSE;
 385
 386         st_get_framebuffer_surface(surf->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 387
 388         if (back_surf) {
 389
 390                 st_notify_swapbuffers(surf->stfb);
 391
 392                 if (surf->screen) {
 393                         surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
 394                         surf->user->pipe->surface_copy(surf->user->pipe,
 395                                 0,
 396                                 surf->screen->surface,
 397                                 0, 0,
 398                                 back_surf,
 399                                 0, 0,
 400                                 surf->w, surf->h);
 401                         surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
 402                         /* TODO stuff here */
 403                 }
 404
 405                 st_notify_swapbuffers_complete(surf->stfb);
 406         }
 407
 408         return EGL_TRUE;
 409 }