mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-15 14:59:37 +00:00
657 lines
15 KiB
C
657 lines
15 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2012 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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// KMS/DRM context, running without any window manager.
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// Based on kmscube example by Rob Clark.
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#include "../../driver.h"
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#include "../gfx_context.h"
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#include "../gl_common.h"
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#include "../gfx_common.h"
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#ifdef HAVE_CONFIG_H
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#include "../../config.h"
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#endif
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#include <errno.h>
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#include <signal.h>
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#include <stdint.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sched.h>
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#include <sys/time.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <libdrm/drm.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <gbm.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/poll.h>
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#include <fcntl.h>
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static EGLContext g_egl_ctx;
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static EGLSurface g_egl_surf;
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static EGLDisplay g_egl_dpy;
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static EGLConfig g_config;
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static volatile sig_atomic_t g_quit;
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static bool g_inited;
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static unsigned g_interval;
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static enum gfx_ctx_api g_api;
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static struct gbm_device *g_gbm_dev;
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static struct gbm_surface *g_gbm_surface;
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static int g_drm_fd;
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static drmModeModeInfo *g_drm_mode;
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static uint32_t g_crtc_id;
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static uint32_t g_connector_id;
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static drmModeCrtcPtr g_orig_crtc;
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static unsigned g_fb_width; // Just use something for now.
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static unsigned g_fb_height;
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static struct gbm_bo *g_bo, *g_next_bo;
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static drmModeRes *g_resources;
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static drmModeConnector *g_connector;
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static drmModeEncoder *g_encoder;
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struct drm_fb
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{
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struct gbm_bo *bo;
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uint32_t fb_id;
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};
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static struct drm_fb *drm_fb_get_from_bo(struct gbm_bo *bo);
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static void gfx_ctx_destroy(void);
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static void sighandler(int sig)
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{
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(void)sig;
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g_quit = 1;
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}
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static void gfx_ctx_swap_interval(unsigned interval)
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{
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g_interval = interval;
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}
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static void gfx_ctx_check_window(bool *quit,
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bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
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{
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(void)frame_count;
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(void)width;
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(void)height;
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*resize = false;
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*quit = g_quit;
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}
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static unsigned first_page_flip;
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static unsigned last_page_flip;
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static uint64_t first_usec;
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static uint64_t last_usec;
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static uint64_t flip_request_usec;
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static unsigned missed_vblanks;
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static unsigned hit_vblanks;
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static void page_flip_handler(int fd, unsigned frame, unsigned sec, unsigned usec, void *data)
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{
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(void)fd;
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uint64_t current_usec = (uint64_t)sec * 1000000 + usec;
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if (!first_page_flip)
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{
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first_page_flip = frame;
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first_usec = current_usec;
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}
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if (last_page_flip)
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{
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unsigned missed = frame - last_page_flip - 1;
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if (!missed)
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hit_vblanks++;
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else
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{
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RARCH_LOG("[KMS/EGL]: Missed %u VBlank(s) (Frame: %u, DRM frame: %u).\n",
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missed, frame - first_page_flip, frame);
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missed_vblanks += missed;
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unsigned flip_time = current_usec - flip_request_usec;
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RARCH_LOG("\tDelta request => flip: %.5f ms.\n", flip_time / 1000.0);
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}
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}
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last_page_flip = frame;
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last_usec = current_usec;
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*(bool*)data = false;
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}
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static bool waiting_for_flip;
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static void wait_flip(bool block)
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{
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struct pollfd fds = {0};
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fds.fd = g_drm_fd;
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fds.events = POLLIN;
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drmEventContext evctx = {0};
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evctx.version = DRM_EVENT_CONTEXT_VERSION;
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evctx.page_flip_handler = page_flip_handler;
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int timeout = block ? -1 : 0;
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while (waiting_for_flip)
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{
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fds.revents = 0;
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if (poll(&fds, 1, timeout) < 0)
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break;
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if (fds.revents & (POLLHUP | POLLERR))
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break;
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if (fds.revents & POLLIN)
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drmHandleEvent(g_drm_fd, &evctx);
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else
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break;
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}
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if (!waiting_for_flip) // Page flip has taken place.
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{
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gbm_surface_release_buffer(g_gbm_surface, g_bo); // This buffer is not on-screen anymore. Release it to GBM.
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g_bo = g_next_bo; // This buffer is being shown now.
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}
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}
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static void queue_flip(void)
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{
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g_next_bo = gbm_surface_lock_front_buffer(g_gbm_surface);
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struct drm_fb *fb = drm_fb_get_from_bo(g_next_bo);
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int ret = drmModePageFlip(g_drm_fd, g_crtc_id, fb->fb_id,
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DRM_MODE_PAGE_FLIP_EVENT, &waiting_for_flip);
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if (ret < 0)
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{
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RARCH_ERR("[KMS/EGL]: Failed to queue page flip.\n");
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return;
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}
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struct timeval tv;
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gettimeofday(&tv, NULL);
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flip_request_usec = (uint64_t)tv.tv_sec * 1000000 + tv.tv_usec;
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waiting_for_flip = true;
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}
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static void gfx_ctx_swap_buffers(void)
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{
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eglSwapBuffers(g_egl_dpy, g_egl_surf);
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// I guess we have to wait for flip to have taken place before another flip can be queued up.
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if (waiting_for_flip)
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{
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wait_flip(g_interval);
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if (waiting_for_flip) // We are still waiting for a flip (nonblocking mode, just drop the frame).
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return;
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}
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queue_flip();
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// We have to wait for this flip to finish. This shouldn't happen as we have triple buffered page-flips.
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if (!gbm_surface_has_free_buffers(g_gbm_surface))
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{
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RARCH_WARN("[KMS/EGL]: Triple buffering is not working correctly ...\n");
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wait_flip(true);
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}
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}
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static void gfx_ctx_set_resize(unsigned width, unsigned height)
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{
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(void)width;
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(void)height;
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}
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static void gfx_ctx_update_window_title(bool reset)
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{
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(void)reset;
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}
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static void gfx_ctx_get_video_size(unsigned *width, unsigned *height)
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{
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*width = g_fb_width;
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*height = g_fb_height;
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}
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static bool gfx_ctx_init(void)
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{
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if (g_inited)
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return false;
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static const char *modules[] = {
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"i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", NULL
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};
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for (int i = 0; modules[i]; i++)
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{
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RARCH_LOG("[KMS/EGL]: Trying to load module %s ...\n", modules[i]);
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g_drm_fd = drmOpen(modules[i], NULL);
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if (g_drm_fd >= 0)
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{
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RARCH_LOG("[KMS/EGL]: Found module %s.\n", modules[i]);
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break;
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}
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}
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if (g_drm_fd < 0)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't open DRM device.\n");
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goto error;
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}
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g_resources = drmModeGetResources(g_drm_fd);
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if (!g_resources)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't get device resources.\n");
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goto error;
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}
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for (int i = 0; i < g_resources->count_connectors; i++)
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{
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g_connector = drmModeGetConnector(g_drm_fd, g_resources->connectors[i]);
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if (g_connector->connection == DRM_MODE_CONNECTED)
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break;
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drmModeFreeConnector(g_connector);
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g_connector = NULL;
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}
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// TODO: Figure out what index for crtcs to use ...
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g_orig_crtc = drmModeGetCrtc(g_drm_fd, g_resources->crtcs[0]);
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if (!g_orig_crtc)
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RARCH_WARN("[KMS/EGL]: Cannot find original CRTC.\n");
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if (!g_connector)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't get device connector.\n");
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goto error;
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}
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for (int i = 0, area = 0; i < g_connector->count_modes; i++)
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{
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drmModeModeInfo *current_mode = &g_connector->modes[i];
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int current_area = current_mode->hdisplay * current_mode->vdisplay;
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if (current_area > area)
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{
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g_drm_mode = current_mode;
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area = current_area;
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}
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}
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if (!g_drm_mode)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't find DRM mode.\n");
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goto error;
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}
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for (int i = 0; i < g_resources->count_encoders; i++)
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{
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g_encoder = drmModeGetEncoder(g_drm_fd, g_resources->encoders[i]);
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if (g_encoder->encoder_id == g_connector->encoder_id)
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break;
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drmModeFreeEncoder(g_encoder);
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g_encoder = NULL;
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}
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if (!g_encoder)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't find DRM encoder.\n");
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goto error;
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}
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g_crtc_id = g_encoder->crtc_id;
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g_connector_id = g_connector->connector_id;
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g_fb_width = g_drm_mode->hdisplay;
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g_fb_height = g_drm_mode->vdisplay;
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g_gbm_dev = gbm_create_device(g_drm_fd);
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g_gbm_surface = gbm_surface_create(g_gbm_dev,
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g_fb_width, g_fb_height,
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GBM_FORMAT_XRGB8888,
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GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
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if (!g_gbm_surface)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't create GBM surface.\n");
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goto error;
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}
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return true;
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error:
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gfx_ctx_destroy();
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return false;
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}
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static void drm_fb_destroy_callback(struct gbm_bo *bo, void *data)
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{
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struct drm_fb *fb = (struct drm_fb*)data;
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if (fb->fb_id)
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drmModeRmFB(g_drm_fd, fb->fb_id);
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free(fb);
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}
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static struct drm_fb *drm_fb_get_from_bo(struct gbm_bo *bo)
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{
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struct drm_fb *fb = (struct drm_fb*)gbm_bo_get_user_data(bo);
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if (fb)
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return fb;
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fb = (struct drm_fb*)calloc(1, sizeof(*fb));
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fb->bo = bo;
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unsigned width = gbm_bo_get_width(bo);
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unsigned height = gbm_bo_get_height(bo);
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unsigned stride = gbm_bo_get_stride(bo);
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unsigned handle = gbm_bo_get_handle(bo).u32;
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int ret = drmModeAddFB(g_drm_fd, width, height, 24, 32, stride, handle, &fb->fb_id);
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if (ret < 0)
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{
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RARCH_ERR("[KMS/EGL]: Failed to create FB: %s\n", strerror(errno));
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free(fb);
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return NULL;
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}
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gbm_bo_set_user_data(bo, fb, drm_fb_destroy_callback);
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return fb;
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}
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static bool gfx_ctx_set_video_mode(
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unsigned width, unsigned height,
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bool fullscreen)
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{
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if (g_inited)
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return false;
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int ret = 0;
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struct drm_fb *fb = NULL;
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struct sigaction sa = {{0}};
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sa.sa_handler = sighandler;
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sa.sa_flags = SA_RESTART;
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sigemptyset(&sa.sa_mask);
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGTERM, &sa, NULL);
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#define EGL_ATTRIBS_BASE \
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT, \
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EGL_RED_SIZE, 0, \
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EGL_GREEN_SIZE, 0, \
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EGL_BLUE_SIZE, 0, \
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EGL_DEPTH_SIZE, 0, \
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EGL_STENCIL_SIZE, 0
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static const EGLint egl_attribs_gl[] = {
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EGL_ATTRIBS_BASE,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
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EGL_NONE,
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};
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static const EGLint egl_attribs_gles[] = {
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EGL_ATTRIBS_BASE,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_NONE,
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};
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static const EGLint egl_attribs_vg[] = {
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EGL_ATTRIBS_BASE,
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EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT,
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EGL_NONE,
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};
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// GLES 2.0. Don't use for any other API.
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static const EGLint gles_context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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const EGLint *attrib_ptr;
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switch (g_api)
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{
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case GFX_CTX_OPENGL_API:
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attrib_ptr = egl_attribs_gl;
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break;
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case GFX_CTX_OPENGL_ES_API:
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attrib_ptr = egl_attribs_gles;
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break;
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case GFX_CTX_OPENVG_API:
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attrib_ptr = egl_attribs_vg;
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break;
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default:
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attrib_ptr = NULL;
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}
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g_egl_dpy = eglGetDisplay((EGLNativeDisplayType)g_gbm_dev);
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if (!g_egl_dpy)
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{
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RARCH_ERR("[KMS/EGL]: Couldn't get EGL display.\n");
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goto error;
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}
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EGLint major, minor;
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if (!eglInitialize(g_egl_dpy, &major, &minor))
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goto error;
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EGLint n;
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if (!eglChooseConfig(g_egl_dpy, attrib_ptr, &g_config, 1, &n) || n != 1)
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goto error;
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g_egl_ctx = eglCreateContext(g_egl_dpy, g_config, EGL_NO_CONTEXT, (g_api == GFX_CTX_OPENGL_ES_API) ? gles_context_attribs : NULL);
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if (!g_egl_ctx)
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goto error;
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g_egl_surf = eglCreateWindowSurface(g_egl_dpy, g_config, (EGLNativeWindowType)g_gbm_surface, NULL);
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if (!g_egl_surf)
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goto error;
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if (!eglMakeCurrent(g_egl_dpy, g_egl_surf, g_egl_surf, g_egl_ctx))
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goto error;
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glClear(GL_COLOR_BUFFER_BIT);
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eglSwapBuffers(g_egl_dpy, g_egl_surf);
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g_bo = gbm_surface_lock_front_buffer(g_gbm_surface);
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fb = drm_fb_get_from_bo(g_bo);
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ret = drmModeSetCrtc(g_drm_fd, g_crtc_id, fb->fb_id, 0, 0, &g_connector_id, 1, g_drm_mode);
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if (ret < 0)
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goto error;
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g_inited = true;
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return true;
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error:
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gfx_ctx_destroy();
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return false;
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}
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void gfx_ctx_destroy(void)
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{
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// Make sure we acknowledge all page-flips.
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if (waiting_for_flip)
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wait_flip(true);
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if (g_egl_dpy)
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{
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if (g_egl_ctx)
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{
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eglMakeCurrent(g_egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroyContext(g_egl_dpy, g_egl_ctx);
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}
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if (g_egl_surf)
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eglDestroySurface(g_egl_dpy, g_egl_surf);
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eglTerminate(g_egl_dpy);
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}
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// Be as careful as possible in deinit.
|
|
// If we screw up, the KMS tty will not restore.
|
|
|
|
g_egl_ctx = NULL;
|
|
g_egl_surf = NULL;
|
|
g_egl_dpy = NULL;
|
|
g_config = 0;
|
|
|
|
// Restore original CRTC.
|
|
if (g_orig_crtc)
|
|
{
|
|
drmModeSetCrtc(g_drm_fd, g_orig_crtc->crtc_id,
|
|
g_orig_crtc->buffer_id,
|
|
g_orig_crtc->x,
|
|
g_orig_crtc->y,
|
|
&g_connector_id, 1, &g_orig_crtc->mode);
|
|
|
|
drmModeFreeCrtc(g_orig_crtc);
|
|
}
|
|
|
|
if (g_gbm_surface)
|
|
gbm_surface_destroy(g_gbm_surface);
|
|
|
|
if (g_gbm_dev)
|
|
gbm_device_destroy(g_gbm_dev);
|
|
|
|
if (g_encoder)
|
|
drmModeFreeEncoder(g_encoder);
|
|
|
|
if (g_connector)
|
|
drmModeFreeConnector(g_connector);
|
|
|
|
if (g_resources)
|
|
drmModeFreeResources(g_resources);
|
|
|
|
g_gbm_surface = NULL;
|
|
g_gbm_dev = NULL;
|
|
g_encoder = NULL;
|
|
g_connector = NULL;
|
|
g_resources = NULL;
|
|
g_orig_crtc = NULL;
|
|
g_drm_mode = NULL;
|
|
|
|
g_quit = 0;
|
|
g_crtc_id = 0;
|
|
g_connector_id = 0;
|
|
|
|
g_fb_width = 0;
|
|
g_fb_height = 0;
|
|
|
|
g_bo = NULL;
|
|
g_next_bo = NULL;
|
|
|
|
if (g_drm_fd >= 0)
|
|
drmClose(g_drm_fd);
|
|
g_drm_fd = -1;
|
|
|
|
unsigned frames = last_page_flip - first_page_flip;
|
|
if (frames)
|
|
{
|
|
uint64_t usec = last_usec - first_usec;
|
|
RARCH_WARN("[KMS/EGL]: Estimated monitor FPS: %.5f Hz\n", 1000000.0 * frames / usec);
|
|
}
|
|
|
|
RARCH_WARN("[KMS/EGL]: Performance stats: Missed VBlanks: %u, Perfect VBlanks: %u\n",
|
|
missed_vblanks, hit_vblanks);
|
|
|
|
g_inited = false;
|
|
}
|
|
|
|
static void gfx_ctx_input_driver(const input_driver_t **input, void **input_data)
|
|
{
|
|
void *linuxinput = input_linuxraw.init();
|
|
*input = linuxinput ? &input_linuxraw : NULL;
|
|
*input_data = linuxinput;
|
|
}
|
|
|
|
static bool gfx_ctx_has_focus(void)
|
|
{
|
|
return g_inited;
|
|
}
|
|
|
|
static gfx_ctx_proc_t gfx_ctx_get_proc_address(const char *symbol)
|
|
{
|
|
return eglGetProcAddress(symbol);
|
|
}
|
|
|
|
static bool gfx_ctx_bind_api(enum gfx_ctx_api api)
|
|
{
|
|
g_api = api;
|
|
switch (api)
|
|
{
|
|
case GFX_CTX_OPENGL_API:
|
|
return eglBindAPI(EGL_OPENGL_API);
|
|
case GFX_CTX_OPENGL_ES_API:
|
|
return eglBindAPI(EGL_OPENGL_ES_API);
|
|
case GFX_CTX_OPENVG_API:
|
|
return eglBindAPI(EGL_OPENVG_API);
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool gfx_ctx_init_egl_image_buffer(const video_info_t *video)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static bool gfx_ctx_write_egl_image(const void *frame, unsigned width, unsigned height, unsigned pitch, bool rgb32, unsigned index, void **image_handle)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
const gfx_ctx_driver_t gfx_ctx_drm_egl = {
|
|
gfx_ctx_init,
|
|
gfx_ctx_destroy,
|
|
gfx_ctx_bind_api,
|
|
gfx_ctx_swap_interval,
|
|
gfx_ctx_set_video_mode,
|
|
gfx_ctx_get_video_size,
|
|
NULL,
|
|
gfx_ctx_update_window_title,
|
|
gfx_ctx_check_window,
|
|
gfx_ctx_set_resize,
|
|
gfx_ctx_has_focus,
|
|
gfx_ctx_swap_buffers,
|
|
gfx_ctx_input_driver,
|
|
gfx_ctx_get_proc_address,
|
|
gfx_ctx_init_egl_image_buffer,
|
|
gfx_ctx_write_egl_image,
|
|
"drm-egl",
|
|
};
|
|
|