+
+/*
+ * Front buffer backing store functions.
+ */
+
+static Bool
+drv_destroy_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ pipe_texture_reference(&ms->root_texture, NULL);
+ return TRUE;
+}
+
+static Bool
+drv_create_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ unsigned handle, stride;
+ struct pipe_texture *tex;
+ int ret;
+
+ ms->noEvict = TRUE;
+
+ tex = xorg_exa_create_root_texture(pScrn, pScrn->virtualX, pScrn->virtualY,
+ pScrn->depth, pScrn->bitsPerPixel);
+
+ if (!tex)
+ return FALSE;
+
+ if (!ms->api->local_handle_from_texture(ms->api, ms->screen,
+ tex,
+ &stride,
+ &handle))
+ goto err_destroy;
+
+ ret = drmModeAddFB(ms->fd,
+ pScrn->virtualX,
+ pScrn->virtualY,
+ pScrn->depth,
+ pScrn->bitsPerPixel,
+ stride,
+ handle,
+ &ms->fb_id);
+ if (ret) {
+ debug_printf("%s: failed to create framebuffer (%i, %s)",
+ __func__, ret, strerror(-ret));
+ goto err_destroy;
+ }
+
+ pScrn->frameX0 = 0;
+ pScrn->frameY0 = 0;
+ drv_adjust_frame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
+
+ pipe_texture_reference(&ms->root_texture, tex);
+ pipe_texture_reference(&tex, NULL);
+
+ return TRUE;
+
+err_destroy:
+ pipe_texture_reference(&tex, NULL);
+ return FALSE;
+}
+
+static Bool
+drv_bind_front_buffer_ga3d(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ ScreenPtr pScreen = pScrn->pScreen;
+ PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+ struct pipe_texture *check;
+
+ xorg_exa_set_displayed_usage(rootPixmap);
+ xorg_exa_set_shared_usage(rootPixmap);
+ xorg_exa_set_texture(rootPixmap, ms->root_texture);
+ if (!pScreen->ModifyPixmapHeader(rootPixmap, -1, -1, -1, -1, -1, NULL))
+ FatalError("Couldn't adjust screen pixmap\n");
+
+ check = xorg_exa_get_texture(rootPixmap);
+ if (ms->root_texture != check)
+ FatalError("Created new root texture\n");
+
+ pipe_texture_reference(&check, NULL);
+ return TRUE;
+}
+
+#ifdef HAVE_LIBKMS
+static Bool
+drv_destroy_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ ScreenPtr pScreen = pScrn->pScreen;
+ PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+
+ /* XXX Do something with the rootPixmap.
+ * This currently works fine but if we are getting crashes in
+ * the fb functions after VT switches maybe look more into it.
+ */
+ (void)rootPixmap;
+
+ if (!ms->root_bo)
+ return TRUE;
+
+ kms_bo_unmap(ms->root_bo);
+ kms_bo_destroy(&ms->root_bo);
+ return TRUE;
+}
+
+static Bool
+drv_create_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ unsigned handle, stride;
+ struct kms_bo *bo;
+ unsigned attr[8];
+ int ret;
+
+ attr[0] = KMS_BO_TYPE;
+ attr[1] = KMS_BO_TYPE_SCANOUT;
+ attr[2] = KMS_WIDTH;
+ attr[3] = pScrn->virtualX;
+ attr[4] = KMS_HEIGHT;
+ attr[5] = pScrn->virtualY;
+ attr[6] = 0;
+
+ if (kms_bo_create(ms->kms, attr, &bo))
+ return FALSE;
+
+ if (kms_bo_get_prop(bo, KMS_PITCH, &stride))
+ goto err_destroy;
+
+ if (kms_bo_get_prop(bo, KMS_HANDLE, &handle))
+ goto err_destroy;
+
+ ret = drmModeAddFB(ms->fd,
+ pScrn->virtualX,
+ pScrn->virtualY,
+ pScrn->depth,
+ pScrn->bitsPerPixel,
+ stride,
+ handle,
+ &ms->fb_id);
+ if (ret) {
+ debug_printf("%s: failed to create framebuffer (%i, %s)",
+ __func__, ret, strerror(-ret));
+ goto err_destroy;
+ }
+
+ pScrn->frameX0 = 0;
+ pScrn->frameY0 = 0;
+ drv_adjust_frame(pScrn->scrnIndex, pScrn->frameX0, pScrn->frameY0, 0);
+ ms->root_bo = bo;
+
+ return TRUE;
+
+err_destroy:
+ kms_bo_destroy(&bo);
+ return FALSE;
+}
+
+static Bool
+drv_bind_front_buffer_kms(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ ScreenPtr pScreen = pScrn->pScreen;
+ PixmapPtr rootPixmap = pScreen->GetScreenPixmap(pScreen);
+ unsigned stride;
+ void *ptr;
+
+ if (kms_bo_get_prop(ms->root_bo, KMS_PITCH, &stride))
+ return FALSE;
+
+ if (kms_bo_map(ms->root_bo, &ptr))
+ goto err_destroy;
+
+ pScreen->ModifyPixmapHeader(rootPixmap,
+ pScreen->width,
+ pScreen->height,
+ pScreen->rootDepth,
+ pScrn->bitsPerPixel,
+ stride,
+ ptr);
+ return TRUE;
+
+err_destroy:
+ kms_bo_destroy(&ms->root_bo);
+ return FALSE;
+}
+#endif /* HAVE_LIBKMS */
+
+static Bool drv_init_front_buffer_functions(ScrnInfoPtr pScrn)
+{
+ modesettingPtr ms = modesettingPTR(pScrn);
+ if (ms->screen) {
+ ms->destroy_front_buffer = drv_destroy_front_buffer_ga3d;
+ ms->create_front_buffer = drv_create_front_buffer_ga3d;
+ ms->bind_front_buffer = drv_bind_front_buffer_ga3d;
+#ifdef HAVE_LIBKMS
+ } else if (ms->kms) {
+ ms->destroy_front_buffer = drv_destroy_front_buffer_kms;
+ ms->create_front_buffer = drv_create_front_buffer_kms;
+ ms->bind_front_buffer = drv_bind_front_buffer_kms;
+#endif
+ } else
+ return FALSE;
+
+ return TRUE;
+}
+