Update to AOSP 8.0 base
Change-Id: I29fe722b4eb9718765327902779046840a01433e
diff --git a/minui/graphics_drm.cpp b/minui/graphics_drm.cpp
index ddda187..ef377b7 100644
--- a/minui/graphics_drm.cpp
+++ b/minui/graphics_drm.cpp
@@ -14,466 +14,384 @@
* limitations under the License.
*/
-#include <drm_fourcc.h>
+#include "graphics_drm.h"
+
#include <fcntl.h>
-#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
-#include <sys/cdefs.h>
-#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <unistd.h>
+
+#include <drm_fourcc.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
-#include "minui.h"
-#include "graphics.h"
+#include "minui/minui.h"
#define ARRAY_SIZE(A) (sizeof(A)/sizeof(*(A)))
-struct drm_surface {
- GRSurface base;
- uint32_t fb_id;
- uint32_t handle;
-};
+MinuiBackendDrm::MinuiBackendDrm()
+ : GRSurfaceDrms(), main_monitor_crtc(nullptr), main_monitor_connector(nullptr), drm_fd(-1) {}
-static drm_surface *drm_surfaces[2];
-static int current_buffer;
-
-static drmModeCrtc *main_monitor_crtc;
-static drmModeConnector *main_monitor_connector;
-
-static int drm_fd = -1;
-
-static void drm_disable_crtc(int drm_fd, drmModeCrtc *crtc) {
- if (crtc) {
- drmModeSetCrtc(drm_fd, crtc->crtc_id,
- 0, // fb_id
- 0, 0, // x,y
- NULL, // connectors
- 0, // connector_count
- NULL); // mode
- }
+void MinuiBackendDrm::DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc) {
+ if (crtc) {
+ drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ 0, // fb_id
+ 0, 0, // x,y
+ nullptr, // connectors
+ 0, // connector_count
+ nullptr); // mode
+ }
}
-static void drm_enable_crtc(int drm_fd, drmModeCrtc *crtc,
- struct drm_surface *surface) {
- int32_t ret;
+void MinuiBackendDrm::DrmEnableCrtc(int drm_fd, drmModeCrtc* crtc, GRSurfaceDrm* surface) {
+ int32_t ret = drmModeSetCrtc(drm_fd, crtc->crtc_id, surface->fb_id, 0, 0, // x,y
+ &main_monitor_connector->connector_id,
+ 1, // connector_count
+ &main_monitor_crtc->mode);
- ret = drmModeSetCrtc(drm_fd, crtc->crtc_id,
- surface->fb_id,
- 0, 0, // x,y
- &main_monitor_connector->connector_id,
- 1, // connector_count
- &main_monitor_crtc->mode);
-
- if (ret)
- printf("drmModeSetCrtc failed ret=%d\n", ret);
+ if (ret) {
+ printf("drmModeSetCrtc failed ret=%d\n", ret);
+ }
}
-static void drm_blank(minui_backend* backend __unused, bool blank) {
- if (blank)
- drm_disable_crtc(drm_fd, main_monitor_crtc);
- else
- drm_enable_crtc(drm_fd, main_monitor_crtc,
- drm_surfaces[current_buffer]);
+void MinuiBackendDrm::Blank(bool blank) {
+ if (blank) {
+ DrmDisableCrtc(drm_fd, main_monitor_crtc);
+ } else {
+ DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[current_buffer]);
+ }
}
-static void drm_destroy_surface(struct drm_surface *surface) {
- struct drm_gem_close gem_close;
- int ret;
+void MinuiBackendDrm::DrmDestroySurface(GRSurfaceDrm* surface) {
+ if (!surface) return;
- if(!surface)
- return;
+ if (surface->data) {
+ munmap(surface->data, surface->row_bytes * surface->height);
+ }
- if (surface->base.data)
- munmap(surface->base.data,
- surface->base.row_bytes * surface->base.height);
-
- if (surface->fb_id) {
- ret = drmModeRmFB(drm_fd, surface->fb_id);
- if (ret)
- printf("drmModeRmFB failed ret=%d\n", ret);
+ if (surface->fb_id) {
+ int ret = drmModeRmFB(drm_fd, surface->fb_id);
+ if (ret) {
+ printf("drmModeRmFB failed ret=%d\n", ret);
}
+ }
- if (surface->handle) {
- memset(&gem_close, 0, sizeof(gem_close));
- gem_close.handle = surface->handle;
+ if (surface->handle) {
+ drm_gem_close gem_close = {};
+ gem_close.handle = surface->handle;
- ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
- if (ret)
- printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
+ int ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
+ if (ret) {
+ printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
}
+ }
- free(surface);
+ delete surface;
}
static int drm_format_to_bpp(uint32_t format) {
- switch(format) {
- case DRM_FORMAT_ABGR8888:
- case DRM_FORMAT_BGRA8888:
- case DRM_FORMAT_RGBX8888:
- case DRM_FORMAT_BGRX8888:
- case DRM_FORMAT_XBGR8888:
- case DRM_FORMAT_ARGB8888:
- case DRM_FORMAT_XRGB8888:
- return 32;
- case DRM_FORMAT_RGB565:
- return 16;
- default:
- printf("Unknown format %d\n", format);
- return 32;
- }
+ switch (format) {
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_BGRA8888:
+ case DRM_FORMAT_RGBX8888:
+ case DRM_FORMAT_BGRX8888:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_XRGB8888:
+ return 32;
+ case DRM_FORMAT_RGB565:
+ return 16;
+ default:
+ printf("Unknown format %d\n", format);
+ return 32;
+ }
}
-static drm_surface *drm_create_surface(int width, int height) {
- struct drm_surface *surface;
- struct drm_mode_create_dumb create_dumb;
- uint32_t format;
- int ret;
+GRSurfaceDrm* MinuiBackendDrm::DrmCreateSurface(int width, int height) {
+ GRSurfaceDrm* surface = new GRSurfaceDrm;
+ *surface = {};
- surface = (struct drm_surface*)calloc(1, sizeof(*surface));
- if (!surface) {
- printf("Can't allocate memory\n");
- return NULL;
- }
-
+ uint32_t format;
#if defined(RECOVERY_ABGR)
- format = DRM_FORMAT_RGBA8888;
+ format = DRM_FORMAT_RGBA8888;
#elif defined(RECOVERY_BGRA)
- format = DRM_FORMAT_ARGB8888;
+ format = DRM_FORMAT_ARGB8888;
#elif defined(RECOVERY_RGBA)
- format = DRM_FORMAT_ABGR8888;
+ format = DRM_FORMAT_ARGB8888;
#elif defined(RECOVERY_RGBX)
- format = DRM_FORMAT_XBGR8888;
+ format = DRM_FORMAT_XBGR8888;
#else
- format = DRM_FORMAT_RGB565;
+ format = DRM_FORMAT_RGB565;
#endif
- memset(&create_dumb, 0, sizeof(create_dumb));
- create_dumb.height = height;
- create_dumb.width = width;
- create_dumb.bpp = drm_format_to_bpp(format);
- create_dumb.flags = 0;
+ drm_mode_create_dumb create_dumb = {};
+ create_dumb.height = height;
+ create_dumb.width = width;
+ create_dumb.bpp = drm_format_to_bpp(format);
+ create_dumb.flags = 0;
- ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
- if (ret) {
- printf("DRM_IOCTL_MODE_CREATE_DUMB failed ret=%d\n",ret);
- drm_destroy_surface(surface);
- return NULL;
- }
- surface->handle = create_dumb.handle;
+ int ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_CREATE_DUMB failed ret=%d\n", ret);
+ DrmDestroySurface(surface);
+ return nullptr;
+ }
+ surface->handle = create_dumb.handle;
- uint32_t handles[4], pitches[4], offsets[4];
+ uint32_t handles[4], pitches[4], offsets[4];
- handles[0] = surface->handle;
- pitches[0] = create_dumb.pitch;
- offsets[0] = 0;
+ handles[0] = surface->handle;
+ pitches[0] = create_dumb.pitch;
+ offsets[0] = 0;
- ret = drmModeAddFB2(drm_fd, width, height,
- format, handles, pitches, offsets,
- &(surface->fb_id), 0);
- if (ret) {
- printf("drmModeAddFB2 failed ret=%d\n", ret);
- drm_destroy_surface(surface);
- return NULL;
- }
+ ret =
+ drmModeAddFB2(drm_fd, width, height, format, handles, pitches, offsets, &(surface->fb_id), 0);
+ if (ret) {
+ printf("drmModeAddFB2 failed ret=%d\n", ret);
+ DrmDestroySurface(surface);
+ return nullptr;
+ }
- struct drm_mode_map_dumb map_dumb;
- memset(&map_dumb, 0, sizeof(map_dumb));
- map_dumb.handle = create_dumb.handle;
- ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
- if (ret) {
- printf("DRM_IOCTL_MODE_MAP_DUMB failed ret=%d\n",ret);
- drm_destroy_surface(surface);
- return NULL;;
- }
+ drm_mode_map_dumb map_dumb = {};
+ map_dumb.handle = create_dumb.handle;
+ ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_MAP_DUMB failed ret=%d\n", ret);
+ DrmDestroySurface(surface);
+ return nullptr;
+ }
- surface->base.height = height;
- surface->base.width = width;
- surface->base.row_bytes = create_dumb.pitch;
- surface->base.pixel_bytes = create_dumb.bpp / 8;
- surface->base.data = (unsigned char*)
- mmap(NULL,
- surface->base.height * surface->base.row_bytes,
- PROT_READ | PROT_WRITE, MAP_SHARED,
- drm_fd, map_dumb.offset);
- if (surface->base.data == MAP_FAILED) {
- perror("mmap() failed");
- drm_destroy_surface(surface);
- return NULL;
- }
+ surface->height = height;
+ surface->width = width;
+ surface->row_bytes = create_dumb.pitch;
+ surface->pixel_bytes = create_dumb.bpp / 8;
+ surface->data = static_cast<unsigned char*>(mmap(nullptr, surface->height * surface->row_bytes,
+ PROT_READ | PROT_WRITE, MAP_SHARED, drm_fd,
+ map_dumb.offset));
+ if (surface->data == MAP_FAILED) {
+ perror("mmap() failed");
+ DrmDestroySurface(surface);
+ return nullptr;
+ }
- return surface;
+ return surface;
}
-static drmModeCrtc *find_crtc_for_connector(int fd,
- drmModeRes *resources,
- drmModeConnector *connector) {
- int i, j;
- drmModeEncoder *encoder;
- int32_t crtc;
+static drmModeCrtc* find_crtc_for_connector(int fd, drmModeRes* resources,
+ drmModeConnector* connector) {
+ // Find the encoder. If we already have one, just use it.
+ drmModeEncoder* encoder;
+ if (connector->encoder_id) {
+ encoder = drmModeGetEncoder(fd, connector->encoder_id);
+ } else {
+ encoder = nullptr;
+ }
- /*
- * Find the encoder. If we already have one, just use it.
- */
- if (connector->encoder_id)
- encoder = drmModeGetEncoder(fd, connector->encoder_id);
- else
- encoder = NULL;
+ int32_t crtc;
+ if (encoder && encoder->crtc_id) {
+ crtc = encoder->crtc_id;
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
- if (encoder && encoder->crtc_id) {
- crtc = encoder->crtc_id;
+ // Didn't find anything, try to find a crtc and encoder combo.
+ crtc = -1;
+ for (int i = 0; i < connector->count_encoders; i++) {
+ encoder = drmModeGetEncoder(fd, connector->encoders[i]);
+
+ if (encoder) {
+ for (int j = 0; j < resources->count_crtcs; j++) {
+ if (!(encoder->possible_crtcs & (1 << j))) continue;
+ crtc = resources->crtcs[j];
+ break;
+ }
+ if (crtc >= 0) {
drmModeFreeEncoder(encoder);
return drmModeGetCrtc(fd, crtc);
+ }
}
+ }
- /*
- * Didn't find anything, try to find a crtc and encoder combo.
- */
- crtc = -1;
- for (i = 0; i < connector->count_encoders; i++) {
- encoder = drmModeGetEncoder(fd, connector->encoders[i]);
-
- if (encoder) {
- for (j = 0; j < resources->count_crtcs; j++) {
- if (!(encoder->possible_crtcs & (1 << j)))
- continue;
- crtc = resources->crtcs[j];
- break;
- }
- if (crtc >= 0) {
- drmModeFreeEncoder(encoder);
- return drmModeGetCrtc(fd, crtc);
- }
- }
- }
-
- return NULL;
+ return nullptr;
}
-static drmModeConnector *find_used_connector_by_type(int fd,
- drmModeRes *resources,
- unsigned type) {
- int i;
- for (i = 0; i < resources->count_connectors; i++) {
- drmModeConnector *connector;
-
- connector = drmModeGetConnector(fd, resources->connectors[i]);
- if (connector) {
- if ((connector->connector_type == type) &&
- (connector->connection == DRM_MODE_CONNECTED) &&
- (connector->count_modes > 0))
- return connector;
-
- drmModeFreeConnector(connector);
- }
+static drmModeConnector* find_used_connector_by_type(int fd, drmModeRes* resources, unsigned type) {
+ for (int i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector* connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->connector_type == type) && (connector->connection == DRM_MODE_CONNECTED) &&
+ (connector->count_modes > 0)) {
+ return connector;
+ }
+ drmModeFreeConnector(connector);
}
- return NULL;
+ }
+ return nullptr;
}
-static drmModeConnector *find_first_connected_connector(int fd,
- drmModeRes *resources) {
- int i;
- for (i = 0; i < resources->count_connectors; i++) {
- drmModeConnector *connector;
+static drmModeConnector* find_first_connected_connector(int fd, drmModeRes* resources) {
+ for (int i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector* connector;
- connector = drmModeGetConnector(fd, resources->connectors[i]);
- if (connector) {
- if ((connector->count_modes > 0) &&
- (connector->connection == DRM_MODE_CONNECTED))
- return connector;
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->count_modes > 0) && (connector->connection == DRM_MODE_CONNECTED))
+ return connector;
- drmModeFreeConnector(connector);
- }
+ drmModeFreeConnector(connector);
}
- return NULL;
+ }
+ return nullptr;
}
-static drmModeConnector *find_main_monitor(int fd, drmModeRes *resources,
- uint32_t *mode_index) {
- unsigned i = 0;
- int modes;
- /* Look for LVDS/eDP/DSI connectors. Those are the main screens. */
- unsigned kConnectorPriority[] = {
- DRM_MODE_CONNECTOR_LVDS,
- DRM_MODE_CONNECTOR_eDP,
- DRM_MODE_CONNECTOR_DSI,
- };
+drmModeConnector* MinuiBackendDrm::FindMainMonitor(int fd, drmModeRes* resources,
+ uint32_t* mode_index) {
+ /* Look for LVDS/eDP/DSI connectors. Those are the main screens. */
+ static constexpr unsigned kConnectorPriority[] = {
+ DRM_MODE_CONNECTOR_LVDS,
+ DRM_MODE_CONNECTOR_eDP,
+ DRM_MODE_CONNECTOR_DSI,
+ };
- drmModeConnector *main_monitor_connector = NULL;
- do {
- main_monitor_connector = find_used_connector_by_type(fd,
- resources,
- kConnectorPriority[i]);
- i++;
- } while (!main_monitor_connector && i < ARRAY_SIZE(kConnectorPriority));
+ drmModeConnector* main_monitor_connector = nullptr;
+ unsigned i = 0;
+ do {
+ main_monitor_connector = find_used_connector_by_type(fd, resources, kConnectorPriority[i]);
+ i++;
+ } while (!main_monitor_connector && i < ARRAY_SIZE(kConnectorPriority));
- /* If we didn't find a connector, grab the first one that is connected. */
- if (!main_monitor_connector)
- main_monitor_connector =
- find_first_connected_connector(fd, resources);
+ /* If we didn't find a connector, grab the first one that is connected. */
+ if (!main_monitor_connector) {
+ main_monitor_connector = find_first_connected_connector(fd, resources);
+ }
- /* If we still didn't find a connector, give up and return. */
- if (!main_monitor_connector)
- return NULL;
+ /* If we still didn't find a connector, give up and return. */
+ if (!main_monitor_connector) return nullptr;
- *mode_index = 0;
- for (modes = 0; modes < main_monitor_connector->count_modes; modes++) {
- if (main_monitor_connector->modes[modes].type &
- DRM_MODE_TYPE_PREFERRED) {
- *mode_index = modes;
- break;
- }
+ *mode_index = 0;
+ for (int modes = 0; modes < main_monitor_connector->count_modes; modes++) {
+ if (main_monitor_connector->modes[modes].type & DRM_MODE_TYPE_PREFERRED) {
+ *mode_index = modes;
+ break;
}
+ }
- return main_monitor_connector;
+ return main_monitor_connector;
}
-static void disable_non_main_crtcs(int fd,
- drmModeRes *resources,
- drmModeCrtc* main_crtc) {
- int i;
- drmModeCrtc* crtc;
-
- for (i = 0; i < resources->count_connectors; i++) {
- drmModeConnector *connector;
-
- connector = drmModeGetConnector(fd, resources->connectors[i]);
- crtc = find_crtc_for_connector(fd, resources, connector);
- if (crtc->crtc_id != main_crtc->crtc_id)
- drm_disable_crtc(fd, crtc);
- drmModeFreeCrtc(crtc);
+void MinuiBackendDrm::DisableNonMainCrtcs(int fd, drmModeRes* resources, drmModeCrtc* main_crtc) {
+ for (int i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector* connector = drmModeGetConnector(fd, resources->connectors[i]);
+ drmModeCrtc* crtc = find_crtc_for_connector(fd, resources, connector);
+ if (crtc->crtc_id != main_crtc->crtc_id) {
+ DrmDisableCrtc(fd, crtc);
}
+ drmModeFreeCrtc(crtc);
+ }
}
-static GRSurface* drm_init(minui_backend* backend __unused) {
- drmModeRes *res = NULL;
- uint32_t selected_mode;
- char *dev_name;
- int width, height;
- int ret, i;
+GRSurface* MinuiBackendDrm::Init() {
+ drmModeRes* res = nullptr;
- /* Consider DRM devices in order. */
- for (i = 0; i < DRM_MAX_MINOR; i++) {
- uint64_t cap = 0;
+ /* Consider DRM devices in order. */
+ for (int i = 0; i < DRM_MAX_MINOR; i++) {
+ char* dev_name;
+ int ret = asprintf(&dev_name, DRM_DEV_NAME, DRM_DIR_NAME, i);
+ if (ret < 0) continue;
- ret = asprintf(&dev_name, DRM_DEV_NAME, DRM_DIR_NAME, i);
- if (ret < 0)
- continue;
+ drm_fd = open(dev_name, O_RDWR, 0);
+ free(dev_name);
+ if (drm_fd < 0) continue;
- drm_fd = open(dev_name, O_RDWR, 0);
- free(dev_name);
- if (drm_fd < 0)
- continue;
-
- /* We need dumb buffers. */
- ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
- if (ret || cap == 0) {
- close(drm_fd);
- continue;
- }
-
- res = drmModeGetResources(drm_fd);
- if (!res) {
- close(drm_fd);
- continue;
- }
-
- /* Use this device if it has at least one connected monitor. */
- if (res->count_crtcs > 0 && res->count_connectors > 0)
- if (find_first_connected_connector(drm_fd, res))
- break;
-
- drmModeFreeResources(res);
- close(drm_fd);
- res = NULL;
+ uint64_t cap = 0;
+ /* We need dumb buffers. */
+ ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
+ if (ret || cap == 0) {
+ close(drm_fd);
+ continue;
}
- if (drm_fd < 0 || res == NULL) {
- perror("cannot find/open a drm device");
- return NULL;
+ res = drmModeGetResources(drm_fd);
+ if (!res) {
+ close(drm_fd);
+ continue;
}
- main_monitor_connector = find_main_monitor(drm_fd,
- res, &selected_mode);
-
- if (!main_monitor_connector) {
- printf("main_monitor_connector not found\n");
- drmModeFreeResources(res);
- close(drm_fd);
- return NULL;
+ /* Use this device if it has at least one connected monitor. */
+ if (res->count_crtcs > 0 && res->count_connectors > 0) {
+ if (find_first_connected_connector(drm_fd, res)) break;
}
- main_monitor_crtc = find_crtc_for_connector(drm_fd, res,
- main_monitor_connector);
-
- if (!main_monitor_crtc) {
- printf("main_monitor_crtc not found\n");
- drmModeFreeResources(res);
- close(drm_fd);
- return NULL;
- }
-
- disable_non_main_crtcs(drm_fd,
- res, main_monitor_crtc);
-
- main_monitor_crtc->mode = main_monitor_connector->modes[selected_mode];
-
- width = main_monitor_crtc->mode.hdisplay;
- height = main_monitor_crtc->mode.vdisplay;
-
drmModeFreeResources(res);
-
- drm_surfaces[0] = drm_create_surface(width, height);
- drm_surfaces[1] = drm_create_surface(width, height);
- if (!drm_surfaces[0] || !drm_surfaces[1]) {
- drm_destroy_surface(drm_surfaces[0]);
- drm_destroy_surface(drm_surfaces[1]);
- drmModeFreeResources(res);
- close(drm_fd);
- return NULL;
- }
-
- current_buffer = 0;
-
- drm_enable_crtc(drm_fd, main_monitor_crtc, drm_surfaces[1]);
-
- return &(drm_surfaces[0]->base);
-}
-
-static GRSurface* drm_flip(minui_backend* backend __unused) {
- int ret;
-
- ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
- drm_surfaces[current_buffer]->fb_id, 0, NULL);
- if (ret < 0) {
- printf("drmModePageFlip failed ret=%d\n", ret);
- return NULL;
- }
- current_buffer = 1 - current_buffer;
- return &(drm_surfaces[current_buffer]->base);
-}
-
-static void drm_exit(minui_backend* backend __unused) {
- drm_disable_crtc(drm_fd, main_monitor_crtc);
- drm_destroy_surface(drm_surfaces[0]);
- drm_destroy_surface(drm_surfaces[1]);
- drmModeFreeCrtc(main_monitor_crtc);
- drmModeFreeConnector(main_monitor_connector);
close(drm_fd);
- drm_fd = -1;
+ res = nullptr;
+ }
+
+ if (drm_fd < 0 || res == nullptr) {
+ perror("cannot find/open a drm device");
+ return nullptr;
+ }
+
+ uint32_t selected_mode;
+ main_monitor_connector = FindMainMonitor(drm_fd, res, &selected_mode);
+
+ if (!main_monitor_connector) {
+ printf("main_monitor_connector not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return nullptr;
+ }
+
+ main_monitor_crtc = find_crtc_for_connector(drm_fd, res, main_monitor_connector);
+
+ if (!main_monitor_crtc) {
+ printf("main_monitor_crtc not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return nullptr;
+ }
+
+ DisableNonMainCrtcs(drm_fd, res, main_monitor_crtc);
+
+ main_monitor_crtc->mode = main_monitor_connector->modes[selected_mode];
+
+ int width = main_monitor_crtc->mode.hdisplay;
+ int height = main_monitor_crtc->mode.vdisplay;
+
+ drmModeFreeResources(res);
+
+ GRSurfaceDrms[0] = DrmCreateSurface(width, height);
+ GRSurfaceDrms[1] = DrmCreateSurface(width, height);
+ if (!GRSurfaceDrms[0] || !GRSurfaceDrms[1]) {
+ // GRSurfaceDrms and drm_fd should be freed in d'tor.
+ return nullptr;
+ }
+
+ current_buffer = 0;
+
+ DrmEnableCrtc(drm_fd, main_monitor_crtc, GRSurfaceDrms[1]);
+
+ return GRSurfaceDrms[0];
}
-static minui_backend drm_backend = {
- .init = drm_init,
- .flip = drm_flip,
- .blank = drm_blank,
- .exit = drm_exit,
-};
+GRSurface* MinuiBackendDrm::Flip() {
+ int ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
+ GRSurfaceDrms[current_buffer]->fb_id, 0, nullptr);
+ if (ret < 0) {
+ printf("drmModePageFlip failed ret=%d\n", ret);
+ return nullptr;
+ }
+ current_buffer = 1 - current_buffer;
+ return GRSurfaceDrms[current_buffer];
+}
-minui_backend* open_drm() {
- return &drm_backend;
+MinuiBackendDrm::~MinuiBackendDrm() {
+ DrmDisableCrtc(drm_fd, main_monitor_crtc);
+ DrmDestroySurface(GRSurfaceDrms[0]);
+ DrmDestroySurface(GRSurfaceDrms[1]);
+ drmModeFreeCrtc(main_monitor_crtc);
+ drmModeFreeConnector(main_monitor_connector);
+ close(drm_fd);
+ drm_fd = -1;
}