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 drmModeModeInfoPtr
  20 drm_find_mode(drmModeConnectorPtr connector, _EGLMode *mode)
  21 {
  22         int i;
  23         drmModeModeInfoPtr 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 = NULL;
  80         unsigned pitch = 0;
  81
  82         memset(&templat, 0, sizeof(templat));
  83         templat.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
  84         templat.tex_usage |= PIPE_TEXTURE_USAGE_PRIMARY;
  85         templat.target = PIPE_TEXTURE_2D;
  86         templat.last_level = 0;
  87         templat.depth[0] = 1;
  88         templat.format = PIPE_FORMAT_A8R8G8B8_UNORM;
  89         templat.width[0] = w;
  90         templat.height[0] = h;
  91         pf_get_block(templat.format, &templat.block);
  92
  93         texture = screen->texture_create(dev->screen,
  94                                          &templat);
  95
  96         if (!texture)
  97                 goto err_tex;
  98
  99         dev->api->buffer_from_texture(dev->api, texture, &buf, &pitch);
 100         if (!buf)
 101                 goto err_buf;
 102
 103         surface = screen->get_tex_surface(screen,
 104                                           texture,
 105                                           0,
 106                                           0,
 107                                           0,
 108                                           PIPE_BUFFER_USAGE_GPU_WRITE);
 109
 110         if (!surface)
 111                 goto err_surf;
 112
 113         scrn->tex = texture;
 114         scrn->surface = surface;
 115         scrn->buffer = buf;
 116         scrn->front.width = w;
 117         scrn->front.height = h;
 118         scrn->front.pitch = pitch;
 119         dev->api->handle_from_buffer(dev->api, screen, scrn->buffer, &scrn->front.handle);
 120         if (0)
 121                 goto err_handle;
 122
 123         return;
 124
 125 err_handle:
 126         pipe_surface_reference(&surface, NULL);
 127 err_surf:
 128         pipe_texture_reference(&texture, NULL);
 129 err_buf:
 130 err_tex:
 131         pipe_buffer_reference(&buf, NULL);
 132         return;
 133 }
 134
 135 /*
 136  * Exported functions
 137  */
 138
 139 void
 140 drm_takedown_shown_screen(_EGLDriver *drv, struct drm_screen *screen)
 141 {
 142         struct drm_device *dev = (struct drm_device *)drv;
 143
 144         screen->surf = NULL;
 145
 146         drmModeSetCrtc(
 147                 dev->drmFD,
 148                 screen->crtcID,
 149                 0, // FD
 150                 0, 0,
 151                 NULL, 0, // List of output ids
 152                 NULL);
 153
 154         drmModeRmFB(dev->drmFD, screen->fbID);
 155         drmModeFreeFB(screen->fb);
 156         screen->fb = NULL;
 157
 158         pipe_surface_reference(&screen->surface, NULL);
 159         pipe_texture_reference(&screen->tex, NULL);
 160         pipe_buffer_reference(&screen->buffer, NULL);
 161
 162         screen->shown = 0;
 163 }
 164
 165 _EGLSurface *
 166 drm_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, NativeWindowType window, const EGLint *attrib_list)
 167 {
 168         return NULL;
 169 }
 170
 171
 172 _EGLSurface *
 173 drm_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, NativePixmapType pixmap, const EGLint *attrib_list)
 174 {
 175         return NULL;
 176 }
 177
 178
 179 _EGLSurface *
 180 drm_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 181                            const EGLint *attrib_list)
 182 {
 183         int i;
 184         int width = -1;
 185         int height = -1;
 186         struct drm_surface *surf = NULL;
 187         __GLcontextModes *visual;
 188
 189         for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
 190                 switch (attrib_list[i]) {
 191                         case EGL_WIDTH:
 192                                 width = attrib_list[++i];
 193                                 break;
 194                         case EGL_HEIGHT:
 195                                 height = attrib_list[++i];
 196                                 break;
 197                         default:
 198                                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 199                                 return EGL_NO_SURFACE;
 200                 }
 201         }
 202
 203         if (width < 1 || height < 1) {
 204                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 205                 return NULL;
 206         }
 207
 208         surf = (struct drm_surface *) calloc(1, sizeof(struct drm_surface));
 209         if (!surf)
 210                 goto err;
 211
 212         if (!_eglInitSurface(drv, &surf->base, EGL_PBUFFER_BIT, conf, attrib_list))
 213                 goto err_surf;
 214
 215         surf->w = width;
 216         surf->h = height;
 217
 218         visual = drm_visual_from_config(conf);
 219         surf->stfb = drm_create_framebuffer(visual,
 220                                             width,
 221                                             height,
 222                                             (void*)surf);
 223         drm_visual_modes_destroy(visual);
 224
 225         return &surf->base;
 226
 227 err_surf:
 228         free(surf);
 229 err:
 230         return NULL;
 231 }
 232
 233 _EGLSurface *
 234 drm_create_screen_surface_mesa(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *cfg,
 235                                const EGLint *attrib_list)
 236 {
 237         EGLSurface surf = drm_create_pbuffer_surface(drv, dpy, cfg, attrib_list);
 238
 239         return surf;
 240 }
 241
 242 EGLBoolean
 243 drm_show_screen_surface_mesa(_EGLDriver *drv, _EGLDisplay *dpy,
 244                              _EGLScreen *screen,
 245                              _EGLSurface *surface, _EGLMode *mode)
 246 {
 247         struct drm_device *dev = (struct drm_device *)drv;
 248         struct drm_surface *surf = lookup_drm_surface(surface);
 249         struct drm_screen *scrn = lookup_drm_screen(screen);
 250         int ret;
 251         unsigned int i, k;
 252
 253         if (scrn->shown)
 254                 drm_takedown_shown_screen(drv, scrn);
 255
 256
 257         drm_create_texture(drv, scrn, mode->Width, mode->Height);
 258         if (!scrn->buffer)
 259                 return EGL_FALSE;
 260
 261         ret = drmModeAddFB(dev->drmFD,
 262                            scrn->front.width, scrn->front.height,
 263                            32, 32, scrn->front.pitch,
 264                            scrn->front.handle,
 265                            &scrn->fbID);
 266
 267         if (ret)
 268                 goto err_bo;
 269
 270         scrn->fb = drmModeGetFB(dev->drmFD, scrn->fbID);
 271         if (!scrn->fb)
 272                 goto err_bo;
 273
 274         /* find a fitting crtc */
 275         {
 276                 drmModeConnector *con = scrn->connector;
 277
 278                 scrn->mode = drm_find_mode(con, mode);
 279                 if (!scrn->mode)
 280                         goto err_fb;
 281
 282                 for (k = 0; k < con->count_encoders; k++) {
 283                         drmModeEncoder *enc = drmModeGetEncoder(dev->drmFD, con->encoders[k]);
 284                         for (i = 0; i < dev->res->count_crtcs; i++) {
 285                                 if (enc->possible_crtcs & (1<<i)) {
 286                                         /* save the ID */
 287                                         scrn->crtcID = dev->res->crtcs[i];
 288
 289                                         /* skip the rest */
 290                                         i = dev->res->count_crtcs;
 291                                         k = dev->res->count_encoders;
 292                                 }
 293                         }
 294                         drmModeFreeEncoder(enc);
 295                 }
 296         }
 297
 298         ret = drmModeSetCrtc(dev->drmFD,
 299                              scrn->crtcID,
 300                              scrn->fbID,
 301                              0, 0,
 302                              &scrn->connectorID, 1,
 303                              scrn->mode);
 304
 305         if (ret)
 306                 goto err_crtc;
 307
 308
 309         if (scrn->dpms)
 310                 drmModeConnectorSetProperty(dev->drmFD,
 311                                             scrn->connectorID,
 312                                             scrn->dpms->prop_id,
 313                                             DRM_MODE_DPMS_ON);
 314
 315         surf->screen = scrn;
 316
 317         scrn->surf = surf;
 318         scrn->shown = 1;
 319
 320         return EGL_TRUE;
 321
 322 err_crtc:
 323         scrn->crtcID = 0;
 324
 325 err_fb:
 326         drmModeRmFB(dev->drmFD, scrn->fbID);
 327         drmModeFreeFB(scrn->fb);
 328         scrn->fb = NULL;
 329
 330 err_bo:
 331         pipe_surface_reference(&scrn->surface, NULL);
 332         pipe_texture_reference(&scrn->tex, NULL);
 333         pipe_buffer_reference(&scrn->buffer, NULL);
 334
 335         return EGL_FALSE;
 336 }
 337
 338 EGLBoolean
 339 drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface)
 340 {
 341         struct drm_surface *surf = lookup_drm_surface(surface);
 342         if (!_eglIsSurfaceBound(&surf->base)) {
 343                 if (surf->screen)
 344                         drm_takedown_shown_screen(drv, surf->screen);
 345                 st_unreference_framebuffer(surf->stfb);
 346                 free(surf);
 347         }
 348         return EGL_TRUE;
 349 }
 350
 351 EGLBoolean
 352 drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
 353 {
 354         struct drm_surface *surf = lookup_drm_surface(draw);
 355         struct pipe_surface *back_surf;
 356
 357         if (!surf)
 358                 return EGL_FALSE;
 359
 360         /* error checking */
 361         if (!_eglSwapBuffers(drv, dpy, draw))
 362                 return EGL_FALSE;
 363
 364         st_get_framebuffer_surface(surf->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 365
 366         if (back_surf) {
 367
 368                 st_notify_swapbuffers(surf->stfb);
 369
 370                 if (surf->screen) {
 371                         surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
 372                         surf->user->pipe->surface_copy(surf->user->pipe,
 373                                 surf->screen->surface,
 374                                 0, 0,
 375                                 back_surf,
 376                                 0, 0,
 377                                 surf->w, surf->h);
 378                         surf->user->pipe->flush(surf->user->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
 379                         /* TODO stuff here */
 380                 }
 381         }
 382
 383         return EGL_TRUE;
 384 }