diff options
| -rw-r--r-- | minuitwrp/graphics_drm.cpp | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/minuitwrp/graphics_drm.cpp b/minuitwrp/graphics_drm.cpp index c1fade41c..c321bb7d8 100644 --- a/minuitwrp/graphics_drm.cpp +++ b/minuitwrp/graphics_drm.cpp @@ -42,6 +42,7 @@ struct drm_surface { static drm_surface *drm_surfaces[2]; static int current_buffer; +static GRSurface *draw_buf = NULL; static drmModeCrtc *main_monitor_crtc; static drmModeConnector *main_monitor_connector; @@ -450,15 +451,40 @@ static GRSurface* drm_init(minui_backend* backend __unused) { return NULL; } + draw_buf = (GRSurface *)malloc(sizeof(GRSurface)); + if (!draw_buf) { + printf("failed to alloc draw_buf\n"); + drm_destroy_surface(drm_surfaces[0]); + drm_destroy_surface(drm_surfaces[1]); + drmModeFreeResources(res); + close(drm_fd); + return NULL; + } + + memcpy(draw_buf, &drm_surfaces[0]->base, sizeof(GRSurface)); + draw_buf->data = (unsigned char *)calloc(draw_buf->height * draw_buf->row_bytes, 1); + if (!draw_buf->data) { + printf("failed to alloc draw_buf surface\n"); + free(draw_buf); + 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); + return draw_buf; } static GRSurface* drm_flip(minui_backend* backend __unused) { int ret; + memcpy(drm_surfaces[current_buffer]->base.data, + draw_buf->data, draw_buf->height * draw_buf->row_bytes); + ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id, drm_surfaces[current_buffer]->fb_id, 0, NULL); @@ -467,7 +493,7 @@ static GRSurface* drm_flip(minui_backend* backend __unused) { return NULL; } current_buffer = 1 - current_buffer; - return &(drm_surfaces[current_buffer]->base); + return draw_buf; } static void drm_exit(minui_backend* backend __unused) { |