| | |
| | | /* |
| | | Simple DirectMedia Layer |
| | | Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> |
| | | Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org> |
| | | |
| | | This software is provided 'as-is', without any express or implied |
| | | warranty. In no event will the authors be held liable for any damages |
| | |
| | | |
| | | int |
| | | KMSDRM_GLES_LoadLibrary(_THIS, const char *path) { |
| | | return SDL_EGL_LoadLibrary(_this, path, ((SDL_VideoData *)_this->driverdata)->gbm, EGL_PLATFORM_GBM_MESA); |
| | | NativeDisplayType display = (NativeDisplayType)((SDL_VideoData *)_this->driverdata)->gbm; |
| | | return SDL_EGL_LoadLibrary(_this, path, display, EGL_PLATFORM_GBM_MESA); |
| | | } |
| | | |
| | | SDL_EGL_CreateContext_impl(KMSDRM) |
| | | |
| | | SDL_bool |
| | | KMSDRM_GLES_SetupCrtc(_THIS, SDL_Window * window) { |
| | | SDL_WindowData *wdata = ((SDL_WindowData *) window->driverdata); |
| | | SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; |
| | | SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata); |
| | | KMSDRM_FBInfo *fb_info; |
| | | |
| | | if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, wdata->egl_surface))) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed on CRTC setup"); |
| | | return SDL_FALSE; |
| | | } |
| | | |
| | | wdata->crtc_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs); |
| | | if (wdata->crtc_bo == NULL) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer on CRTC setup"); |
| | | return SDL_FALSE; |
| | | } |
| | | |
| | | fb_info = KMSDRM_FBFromBO(_this, wdata->crtc_bo); |
| | | if (fb_info == NULL) { |
| | | return SDL_FALSE; |
| | | } |
| | | |
| | | if(KMSDRM_drmModeSetCrtc(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id, |
| | | 0, 0, &vdata->saved_conn_id, 1, &displaydata->cur_mode) != 0) { |
| | | SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not set up CRTC to a GBM buffer"); |
| | | return SDL_FALSE; |
| | | |
| | | } |
| | | |
| | | wdata->crtc_ready = SDL_TRUE; |
| | | return SDL_TRUE; |
| | | } |
| | | |
| | | int KMSDRM_GLES_SetSwapInterval(_THIS, int interval) { |
| | | if (!_this->egl_data) { |
| | |
| | | |
| | | int |
| | | KMSDRM_GLES_SwapWindow(_THIS, SDL_Window * window) { |
| | | SDL_WindowData *wdata = ((SDL_WindowData *) window->driverdata); |
| | | SDL_DisplayData *displaydata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; |
| | | SDL_VideoData *vdata = ((SDL_VideoData *)_this->driverdata); |
| | | SDL_WindowData *windata = ((SDL_WindowData *) window->driverdata); |
| | | SDL_DisplayData *dispdata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; |
| | | SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); |
| | | KMSDRM_FBInfo *fb_info; |
| | | int ret; |
| | | int ret, timeout; |
| | | |
| | | /* Do we still need to wait for a flip? */ |
| | | int timeout = 0; |
| | | /* Recreate the GBM / EGL surfaces if the display mode has changed */ |
| | | if (windata->egl_surface_dirty) { |
| | | KMSDRM_CreateSurfaces(_this, window); |
| | | } |
| | | |
| | | /* Wait for confirmation that the next front buffer has been flipped, at which |
| | | point the previous front buffer can be released */ |
| | | timeout = 0; |
| | | if (_this->egl_data->egl_swapinterval == 1) { |
| | | timeout = -1; |
| | | } |
| | | if (!KMSDRM_WaitPageFlip(_this, wdata, timeout)) { |
| | | if (!KMSDRM_WaitPageFlip(_this, windata, timeout)) { |
| | | return 0; |
| | | } |
| | | |
| | | /* Release previously displayed buffer (which is now the backbuffer) and lock a new one */ |
| | | if (wdata->next_bo != NULL) { |
| | | KMSDRM_gbm_surface_release_buffer(wdata->gs, wdata->current_bo); |
| | | /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Released GBM surface %p", (void *)wdata->next_bo); */ |
| | | |
| | | wdata->current_bo = wdata->next_bo; |
| | | wdata->next_bo = NULL; |
| | | /* Release the previous front buffer */ |
| | | if (windata->curr_bo) { |
| | | KMSDRM_gbm_surface_release_buffer(windata->gs, windata->curr_bo); |
| | | /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Released GBM surface %p", (void *)windata->curr_bo); */ |
| | | windata->curr_bo = NULL; |
| | | } |
| | | |
| | | if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, wdata->egl_surface))) { |
| | | windata->curr_bo = windata->next_bo; |
| | | |
| | | /* Make the current back buffer the next front buffer */ |
| | | if (!(_this->egl_data->eglSwapBuffers(_this->egl_data->egl_display, windata->egl_surface))) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "eglSwapBuffers failed."); |
| | | return 0; |
| | | } |
| | | |
| | | if (wdata->current_bo == NULL) { |
| | | wdata->current_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs); |
| | | if (wdata->current_bo == NULL) { |
| | | return 0; |
| | | } |
| | | } |
| | | |
| | | wdata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(wdata->gs); |
| | | if (wdata->next_bo == NULL) { |
| | | /* Lock the next front buffer so it can't be allocated as a back buffer */ |
| | | windata->next_bo = KMSDRM_gbm_surface_lock_front_buffer(windata->gs); |
| | | if (!windata->next_bo) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not lock GBM surface front buffer"); |
| | | return 0; |
| | | /* } else { |
| | | SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Locked GBM surface %p", (void *)wdata->next_bo); */ |
| | | SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Locked GBM surface %p", (void *)windata->next_bo); */ |
| | | } |
| | | |
| | | fb_info = KMSDRM_FBFromBO(_this, wdata->next_bo); |
| | | if (fb_info == NULL) { |
| | | fb_info = KMSDRM_FBFromBO(_this, windata->next_bo); |
| | | if (!fb_info) { |
| | | return 0; |
| | | } |
| | | if (_this->egl_data->egl_swapinterval == 0) { |
| | | /* Swap buffers instantly, possible tearing */ |
| | | /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModeSetCrtc(%d, %u, %u, 0, 0, &%u, 1, &%ux%u@%u)", |
| | | vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id, vdata->saved_conn_id, |
| | | displaydata->cur_mode.hdisplay, displaydata->cur_mode.vdisplay, displaydata->cur_mode.vrefresh); */ |
| | | ret = KMSDRM_drmModeSetCrtc(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id, |
| | | 0, 0, &vdata->saved_conn_id, 1, &displaydata->cur_mode); |
| | | if(ret != 0) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not pageflip with drmModeSetCrtc: %d", ret); |
| | | |
| | | if (!windata->curr_bo) { |
| | | /* On the first swap, immediately present the new front buffer. Before |
| | | drmModePageFlip can be used the CRTC has to be configured to use |
| | | the current connector and mode with drmModeSetCrtc */ |
| | | ret = KMSDRM_drmModeSetCrtc(viddata->drm_fd, dispdata->crtc_id, fb_info->fb_id, 0, |
| | | 0, &dispdata->conn->connector_id, 1, &dispdata->mode); |
| | | |
| | | if (ret) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not configure CRTC"); |
| | | } |
| | | } else { |
| | | /* Queue page flip at vsync */ |
| | | /* On subsequent swaps, queue the new front buffer to be flipped during |
| | | the next vertical blank */ |
| | | ret = KMSDRM_drmModePageFlip(viddata->drm_fd, dispdata->crtc_id, fb_info->fb_id, |
| | | DRM_MODE_PAGE_FLIP_EVENT, &windata->waiting_for_flip); |
| | | /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModePageFlip(%d, %u, %u, DRM_MODE_PAGE_FLIP_EVENT, &windata->waiting_for_flip)", |
| | | viddata->drm_fd, displaydata->crtc_id, fb_info->fb_id); */ |
| | | |
| | | /* Have we already setup the CRTC to one of the GBM buffers? Do so if we have not, |
| | | or FlipPage won't work in some cases. */ |
| | | if (!wdata->crtc_ready) { |
| | | if(!KMSDRM_GLES_SetupCrtc(_this, window)) { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not set up CRTC for doing vsync-ed pageflips"); |
| | | return 0; |
| | | if (_this->egl_data->egl_swapinterval == 1) { |
| | | if (ret == 0) { |
| | | windata->waiting_for_flip = SDL_TRUE; |
| | | } else { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not queue pageflip: %d", ret); |
| | | } |
| | | } |
| | | |
| | | /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "drmModePageFlip(%d, %u, %u, DRM_MODE_PAGE_FLIP_EVENT, &wdata->waiting_for_flip)", |
| | | vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id); */ |
| | | ret = KMSDRM_drmModePageFlip(vdata->drm_fd, displaydata->crtc_id, fb_info->fb_id, |
| | | DRM_MODE_PAGE_FLIP_EVENT, &wdata->waiting_for_flip); |
| | | if (ret == 0) { |
| | | wdata->waiting_for_flip = SDL_TRUE; |
| | | } else { |
| | | SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Could not queue pageflip: %d", ret); |
| | | } |
| | | |
| | | /* Wait immediately for vsync (as if we only had two buffers), for low input-lag scenarios. |
| | | Run your SDL2 program with "SDL_KMSDRM_DOUBLE_BUFFER=1 <program_name>" to enable this. */ |
| | | if (wdata->double_buffer) { |
| | | KMSDRM_WaitPageFlip(_this, wdata, -1); |
| | | if (_this->egl_data->egl_swapinterval == 1 && windata->double_buffer) { |
| | | KMSDRM_WaitPageFlip(_this, windata, -1); |
| | | } |
| | | } |
| | | |