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(_EGLDisplay *dpy,
  71                    struct drm_screen *scrn,
  72                    unsigned w, unsigned h)
  73 {
  74         struct drm_device *dev = lookup_drm_device(dpy);
  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         surface = screen->get_tex_surface(screen,
 100                                           texture,
 101                                           0,
 102                                           0,
 103                                           0,
 104                                           PIPE_BUFFER_USAGE_GPU_WRITE);
 105
 106         if (!surface)
 107                 goto err_surf;
 108
 109         scrn->tex = texture;
 110         scrn->surface = surface;
 111         scrn->front.width = w;
 112         scrn->front.height = h;
 113         scrn->front.pitch = pitch;
 114         dev->api->local_handle_from_texture(dev->api, screen, texture,
 115                                             &scrn->front.pitch, &scrn->front.handle);
 116         if (0)
 117                 goto err_handle;
 118
 119         return;
 120
 121 err_handle:
 122         pipe_surface_reference(&surface, NULL);
 123 err_surf:
 124         pipe_texture_reference(&texture, NULL);
 125 err_tex:
 126         pipe_buffer_reference(&buf, NULL);
 127         return;
 128 }
 129
 130 /*
 131  * Exported functions
 132  */
 133
 134 void
 135 drm_takedown_shown_screen(_EGLDisplay *dpy, struct drm_screen *screen)
 136 {
 137         struct drm_device *dev = lookup_drm_device(dpy);
 138
 139         screen->surf = NULL;
 140
 141         drmModeSetCrtc(
 142                 dev->drmFD,
 143                 screen->crtcID,
 144                 0, // FD
 145                 0, 0,
 146                 NULL, 0, // List of output ids
 147                 NULL);
 148
 149         drmModeRmFB(dev->drmFD, screen->fbID);
 150         drmModeFreeFB(screen->fb);
 151         screen->fb = NULL;
 152
 153         pipe_surface_reference(&screen->surface, NULL);
 154         pipe_texture_reference(&screen->tex, NULL);
 155
 156         screen->shown = 0;
 157 }
 158
 159 _EGLSurface *
 160 drm_create_window_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, NativeWindowType window, const EGLint *attrib_list)
 161 {
 162         return NULL;
 163 }
 164
 165
 166 _EGLSurface *
 167 drm_create_pixmap_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf, NativePixmapType pixmap, const EGLint *attrib_list)
 168 {
 169         return NULL;
 170 }
 171
 172
 173 _EGLSurface *
 174 drm_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
 175                            const EGLint *attrib_list)
 176 {
 177         int i;
 178         int width = -1;
 179         int height = -1;
 180         struct drm_surface *surf = NULL;
 181         __GLcontextModes *visual;
 182
 183         for (i = 0; attrib_list && attrib_list[i] != EGL_NONE; i++) {
 184                 switch (attrib_list[i]) {
 185                         case EGL_WIDTH:
 186                                 width = attrib_list[++i];
 187                                 break;
 188                         case EGL_HEIGHT:
 189                                 height = attrib_list[++i];
 190                                 break;
 191                         default:
 192                                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 193                                 return EGL_NO_SURFACE;
 194                 }
 195         }
 196
 197         if (width < 1 || height < 1) {
 198                 _eglError(EGL_BAD_ATTRIBUTE, "eglCreatePbufferSurface");
 199                 return NULL;
 200         }
 201
 202         surf = (struct drm_surface *) calloc(1, sizeof(struct drm_surface));
 203         if (!surf)
 204                 goto err;
 205
 206         if (!_eglInitSurface(drv, &surf->base, EGL_PBUFFER_BIT, conf, attrib_list))
 207                 goto err_surf;
 208
 209         surf->w = width;
 210         surf->h = height;
 211
 212         visual = drm_visual_from_config(conf);
 213         surf->stfb = drm_create_framebuffer(visual,
 214                                             width,
 215                                             height,
 216                                             (void*)surf);
 217         drm_visual_modes_destroy(visual);
 218
 219         return &surf->base;
 220
 221 err_surf:
 222         free(surf);
 223 err:
 224         return NULL;
 225 }
 226
 227 _EGLSurface *
 228 drm_create_screen_surface_mesa(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *cfg,
 229                                const EGLint *attrib_list)
 230 {
 231         EGLSurface surf = drm_create_pbuffer_surface(drv, dpy, cfg, attrib_list);
 232
 233         return surf;
 234 }
 235
 236 EGLBoolean
 237 drm_show_screen_surface_mesa(_EGLDriver *drv, _EGLDisplay *dpy,
 238                              _EGLScreen *screen,
 239                              _EGLSurface *surface, _EGLMode *mode)
 240 {
 241         struct drm_device *dev = lookup_drm_device(dpy);
 242         struct drm_surface *surf = lookup_drm_surface(surface);
 243         struct drm_screen *scrn = lookup_drm_screen(screen);
 244         int ret;
 245         unsigned int i, k;
 246
 247         if (scrn->shown)
 248                 drm_takedown_shown_screen(dpy, scrn);
 249
 250
 251         drm_create_texture(dpy, scrn, mode->Width, mode->Height);
 252         if (!scrn->tex)
 253                 goto err_tex;
 254
 255         ret = drmModeAddFB(dev->drmFD,
 256                            scrn->front.width, scrn->front.height,
 257                            32, 32, scrn->front.pitch,
 258                            scrn->front.handle,
 259                            &scrn->fbID);
 260
 261         if (ret)
 262                 goto err_bo;
 263
 264         scrn->fb = drmModeGetFB(dev->drmFD, scrn->fbID);
 265         if (!scrn->fb)
 266                 goto err_bo;
 267
 268         /* find a fitting crtc */
 269         {
 270                 drmModeConnector *con = scrn->connector;
 271
 272                 scrn->mode = drm_find_mode(con, mode);
 273                 if (!scrn->mode)
 274                         goto err_fb;
 275
 276                 for (k = 0; k < con->count_encoders; k++) {
 277                         drmModeEncoder *enc = drmModeGetEncoder(dev->drmFD, con->encoders[k]);
 278                         for (i = 0; i < dev->res->count_crtcs; i++) {
 279                                 if (enc->possible_crtcs & (1<<i)) {
 280                                         /* save the ID */
 281                                         scrn->crtcID = dev->res->crtcs[i];
 282
 283                                         /* skip the rest */
 284                                         i = dev->res->count_crtcs;
 285                                         k = dev->res->count_encoders;
 286                                 }
 287                         }
 288                         drmModeFreeEncoder(enc);
 289                 }
 290         }
 291
 292         ret = drmModeSetCrtc(dev->drmFD,
 293                              scrn->crtcID,
 294                              scrn->fbID,
 295                              0, 0,
 296                              &scrn->connectorID, 1,
 297                              scrn->mode);
 298
 299         if (ret)
 300                 goto err_crtc;
 301
 302
 303         if (scrn->dpms)
 304                 drmModeConnectorSetProperty(dev->drmFD,
 305                                             scrn->connectorID,
 306                                             scrn->dpms->prop_id,
 307                                             DRM_MODE_DPMS_ON);
 308
 309         surf->screen = scrn;
 310
 311         scrn->surf = surf;
 312         scrn->shown = 1;
 313
 314         return EGL_TRUE;
 315
 316 err_crtc:
 317         scrn->crtcID = 0;
 318
 319 err_fb:
 320         drmModeRmFB(dev->drmFD, scrn->fbID);
 321         drmModeFreeFB(scrn->fb);
 322         scrn->fb = NULL;
 323
 324 err_bo:
 325         pipe_surface_reference(&scrn->surface, NULL);
 326         pipe_texture_reference(&scrn->tex, NULL);
 327
 328 err_tex:
 329         return EGL_FALSE;
 330 }
 331
 332 EGLBoolean
 333 drm_destroy_surface(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface)
 334 {
 335         struct drm_surface *surf = lookup_drm_surface(surface);
 336         if (!_eglIsSurfaceBound(&surf->base)) {
 337                 if (surf->screen)
 338                         drm_takedown_shown_screen(dpy, surf->screen);
 339                 st_unreference_framebuffer(surf->stfb);
 340                 free(surf);
 341         }
 342         return EGL_TRUE;
 343 }
 344
 345 EGLBoolean
 346 drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *draw)
 347 {
 348         struct drm_device *dev = lookup_drm_device(dpy);
 349         struct drm_surface *surf = lookup_drm_surface(draw);
 350         struct pipe_surface *back_surf;
 351
 352         if (!surf)
 353                 return EGL_FALSE;
 354
 355         st_get_framebuffer_surface(surf->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
 356
 357         if (back_surf) {
 358                 struct drm_context *ctx = lookup_drm_context(draw->Binding);
 359
 360                 st_notify_swapbuffers(surf->stfb);
 361
 362                 if (ctx && surf->screen) {
 363                         ctx->pipe->surface_copy(ctx->pipe,
 364                                 surf->screen->surface,
 365                                 0, 0,
 366                                 back_surf,
 367                                 0, 0,
 368                                 surf->w, surf->h);
 369                         ctx->pipe->flush(ctx->pipe, PIPE_FLUSH_RENDER_CACHE | PIPE_FLUSH_TEXTURE_CACHE, NULL);
 370
 371 #ifdef DRM_MODE_FEATURE_DIRTYFB
 372                         /* TODO query connector property to see if this is needed */
 373                         drmModeDirtyFB(dev->drmFD, surf->screen->fbID, NULL, 0);
 374 #else
 375                         (void)dev;
 376 #endif
 377
 378                         /* TODO more stuff here */
 379                 }
 380         }
 381
 382         return EGL_TRUE;
 383 }