mirror of
https://github.com/CTCaer/RetroArch.git
synced 2024-12-15 23:06:40 +00:00
557 lines
13 KiB
C
557 lines
13 KiB
C
/* RetroArch - A frontend for libretro.
|
|
* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
|
|
* Copyright (C) 2011-2012 - Daniel De Matteis
|
|
*
|
|
* RetroArch is free software: you can redistribute it and/or modify it under the terms
|
|
* of the GNU General Public License as published by the Free Software Found-
|
|
* ation, either version 3 of the License, or (at your option) any later version.
|
|
*
|
|
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with RetroArch.
|
|
* If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
// KMS/DRM context, running without any window manager.
|
|
// Based on kmscube example by Rob Clark.
|
|
|
|
#include "../../driver.h"
|
|
#include "../gfx_context.h"
|
|
#include "../gl_common.h"
|
|
#include "../gfx_common.h"
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "../../config.h"
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <stdint.h>
|
|
#include <signal.h>
|
|
|
|
#include <EGL/egl.h>
|
|
#include <EGL/eglext.h>
|
|
|
|
#include <libdrm/drm.h>
|
|
#include <xf86drm.h>
|
|
#include <xf86drmMode.h>
|
|
#include <gbm.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/poll.h>
|
|
#include <fcntl.h>
|
|
|
|
static EGLContext g_egl_ctx;
|
|
static EGLSurface g_egl_surf;
|
|
static EGLDisplay g_egl_dpy;
|
|
static EGLConfig g_config;
|
|
|
|
static volatile sig_atomic_t g_quit;
|
|
static bool g_inited;
|
|
static unsigned g_interval;
|
|
|
|
static struct gbm_device *g_gbm_dev;
|
|
static struct gbm_surface *g_gbm_surface;
|
|
|
|
static int g_drm_fd;
|
|
static drmModeModeInfo *g_drm_mode;
|
|
static uint32_t g_crtc_id;
|
|
static uint32_t g_connector_id;
|
|
|
|
static drmModeCrtcPtr g_orig_crtc;
|
|
|
|
static unsigned g_fb_width; // Just use something for now.
|
|
static unsigned g_fb_height;
|
|
|
|
static struct gbm_bo *g_bo, *g_next_bo;
|
|
|
|
static drmModeRes *g_resources;
|
|
static drmModeConnector *g_connector;
|
|
static drmModeEncoder *g_encoder;
|
|
|
|
struct drm_fb
|
|
{
|
|
struct gbm_bo *bo;
|
|
uint32_t fb_id;
|
|
};
|
|
|
|
static struct drm_fb *drm_fb_get_from_bo(struct gbm_bo *bo);
|
|
|
|
static void sighandler(int sig)
|
|
{
|
|
(void)sig;
|
|
g_quit = 1;
|
|
}
|
|
|
|
void gfx_ctx_set_swap_interval(unsigned interval, bool inited)
|
|
{
|
|
g_interval = interval;
|
|
}
|
|
|
|
void gfx_ctx_check_window(bool *quit,
|
|
bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
|
|
{
|
|
(void)frame_count;
|
|
(void)width;
|
|
(void)height;
|
|
|
|
*resize = false;
|
|
*quit = g_quit;
|
|
}
|
|
|
|
static void page_flip_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data)
|
|
{
|
|
(void)fd;
|
|
(void)frame;
|
|
(void)sec;
|
|
(void)usec;
|
|
|
|
//fprintf(stderr, "Frame: %u, Time (ms). %.3f\n", frame, sec * 1000.0 + usec / 1000.0);
|
|
|
|
bool *waiting = (bool*)data;
|
|
*waiting = false;
|
|
}
|
|
|
|
static bool waiting_for_flip;
|
|
|
|
static void wait_flip(bool block)
|
|
{
|
|
struct pollfd fds = {0};
|
|
fds.fd = g_drm_fd;
|
|
fds.events = POLLIN;
|
|
|
|
drmEventContext evctx = {0};
|
|
evctx.version = DRM_EVENT_CONTEXT_VERSION;
|
|
evctx.page_flip_handler = page_flip_handler;
|
|
|
|
int timeout = block ? -1 : 0;
|
|
|
|
while (waiting_for_flip)
|
|
{
|
|
fds.revents = 0;
|
|
if (poll(&fds, 1, timeout) < 0)
|
|
break;
|
|
|
|
if (fds.revents & (POLLHUP | POLLERR))
|
|
break;
|
|
|
|
if (fds.revents & POLLIN)
|
|
drmHandleEvent(g_drm_fd, &evctx);
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (!waiting_for_flip) // Page flip has taken place.
|
|
{
|
|
gbm_surface_release_buffer(g_gbm_surface, g_bo); // This buffer is not on-screen anymore. Release it to GBM.
|
|
g_bo = g_next_bo; // This buffer is being shown now.
|
|
}
|
|
}
|
|
|
|
static void queue_flip(void)
|
|
{
|
|
g_next_bo = gbm_surface_lock_front_buffer(g_gbm_surface);
|
|
struct drm_fb *fb = drm_fb_get_from_bo(g_next_bo);
|
|
|
|
int ret = drmModePageFlip(g_drm_fd, g_crtc_id, fb->fb_id,
|
|
DRM_MODE_PAGE_FLIP_EVENT, &waiting_for_flip);
|
|
|
|
if (ret < 0)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Failed to queue page flip.\n");
|
|
return;
|
|
}
|
|
|
|
waiting_for_flip = true;
|
|
}
|
|
|
|
void gfx_ctx_swap_buffers(void)
|
|
{
|
|
eglSwapBuffers(g_egl_dpy, g_egl_surf);
|
|
|
|
// I guess we have to wait for flip to have taken place before another flip can be queued up.
|
|
if (waiting_for_flip)
|
|
{
|
|
wait_flip(g_interval);
|
|
if (waiting_for_flip) // We are still waiting for a flip (nonblocking mode, just drop the frame).
|
|
return;
|
|
}
|
|
|
|
queue_flip();
|
|
|
|
// We have to wait for this flip to finish. This shouldn't happen as we have triple buffered page-flips.
|
|
if (!gbm_surface_has_free_buffers(g_gbm_surface))
|
|
{
|
|
RARCH_WARN("[KMS/EGL]: Triple buffering is not working correctly ...\n");
|
|
wait_flip(true);
|
|
}
|
|
}
|
|
|
|
void gfx_ctx_set_resize(unsigned width, unsigned height)
|
|
{
|
|
(void)width;
|
|
(void)height;
|
|
}
|
|
|
|
void gfx_ctx_update_window_title(bool reset)
|
|
{
|
|
(void)reset;
|
|
}
|
|
|
|
void gfx_ctx_get_video_size(unsigned *width, unsigned *height)
|
|
{
|
|
*width = g_fb_width;
|
|
*height = g_fb_height;
|
|
}
|
|
|
|
bool gfx_ctx_init(void)
|
|
{
|
|
if (g_inited)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Driver does not support reinitialization yet.\n");
|
|
return false;
|
|
}
|
|
|
|
static const char *modules[] = {
|
|
"i915", "radeon", "nouveau", "vmwgfx", "omapdrm", "exynos", NULL
|
|
};
|
|
|
|
for (int i = 0; modules[i]; i++)
|
|
{
|
|
RARCH_LOG("[KMS/EGL]: Trying to load module %s ...\n", modules[i]);
|
|
g_drm_fd = drmOpen(modules[i], NULL);
|
|
if (g_drm_fd >= 0)
|
|
{
|
|
RARCH_LOG("[KMS/EGL]: Found module %s.\n", modules[i]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (g_drm_fd < 0)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't open DRM device.\n");
|
|
goto error;
|
|
}
|
|
|
|
g_resources = drmModeGetResources(g_drm_fd);
|
|
if (!g_resources)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't get device resources.\n");
|
|
goto error;
|
|
}
|
|
|
|
for (int i = 0; i < g_resources->count_connectors; i++)
|
|
{
|
|
g_connector = drmModeGetConnector(g_drm_fd, g_resources->connectors[i]);
|
|
if (g_connector->connection == DRM_MODE_CONNECTED)
|
|
break;
|
|
|
|
drmModeFreeConnector(g_connector);
|
|
g_connector = NULL;
|
|
}
|
|
|
|
// TODO: Figure out what index for crtcs to use ...
|
|
g_orig_crtc = drmModeGetCrtc(g_drm_fd, g_resources->crtcs[0]);
|
|
if (!g_orig_crtc)
|
|
RARCH_WARN("[KMS/EGL]: Cannot find original CRTC.\n");
|
|
|
|
if (!g_connector)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't get device connector.\n");
|
|
goto error;
|
|
}
|
|
|
|
for (int i = 0, area = 0; i < g_connector->count_modes; i++)
|
|
{
|
|
drmModeModeInfo *current_mode = &g_connector->modes[i];
|
|
int current_area = current_mode->hdisplay * current_mode->vdisplay;
|
|
if (current_area > area)
|
|
{
|
|
g_drm_mode = current_mode;
|
|
area = current_area;
|
|
}
|
|
}
|
|
|
|
if (!g_drm_mode)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't find DRM mode.\n");
|
|
goto error;
|
|
}
|
|
|
|
for (int i = 0; i < g_resources->count_encoders; i++)
|
|
{
|
|
g_encoder = drmModeGetEncoder(g_drm_fd, g_resources->encoders[i]);
|
|
if (g_encoder->encoder_id == g_connector->encoder_id)
|
|
break;
|
|
|
|
drmModeFreeEncoder(g_encoder);
|
|
g_encoder = NULL;
|
|
}
|
|
|
|
if (!g_encoder)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't find DRM encoder.\n");
|
|
goto error;
|
|
}
|
|
|
|
g_crtc_id = g_encoder->crtc_id;
|
|
g_connector_id = g_connector->connector_id;
|
|
|
|
g_fb_width = g_drm_mode->hdisplay;
|
|
g_fb_height = g_drm_mode->vdisplay;
|
|
|
|
g_gbm_dev = gbm_create_device(g_drm_fd);
|
|
g_gbm_surface = gbm_surface_create(g_gbm_dev,
|
|
g_fb_width, g_fb_height,
|
|
GBM_FORMAT_XRGB8888,
|
|
GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING);
|
|
|
|
if (!g_gbm_surface)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't create GBM surface.\n");
|
|
goto error;
|
|
}
|
|
|
|
static const EGLint context_attribs[] = {
|
|
EGL_CONTEXT_CLIENT_VERSION, 2,
|
|
EGL_NONE
|
|
};
|
|
|
|
static const EGLint config_attribs[] = {
|
|
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
|
|
EGL_RED_SIZE, 1,
|
|
EGL_GREEN_SIZE, 1,
|
|
EGL_BLUE_SIZE, 1,
|
|
EGL_ALPHA_SIZE, 0,
|
|
#ifdef HAVE_OPENGLES2
|
|
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
|
|
#else
|
|
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
|
|
#endif
|
|
EGL_NONE
|
|
};
|
|
|
|
g_egl_dpy = eglGetDisplay((EGLNativeDisplayType)g_gbm_dev);
|
|
if (!g_egl_dpy)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Couldn't get EGL display.\n");
|
|
goto error;
|
|
}
|
|
|
|
EGLint major, minor;
|
|
if (!eglInitialize(g_egl_dpy, &major, &minor))
|
|
goto error;
|
|
|
|
#ifdef HAVE_OPENGLES2
|
|
RARCH_LOG("[KMS/EGL]: Using OpenGL ES API.\n");
|
|
if (!eglBindAPI(EGL_OPENGL_ES_API))
|
|
goto error;
|
|
#else
|
|
RARCH_LOG("[KMS/EGL]: Using OpenGL API.\n");
|
|
if (!eglBindAPI(EGL_OPENGL_API))
|
|
goto error;
|
|
#endif
|
|
|
|
EGLint n;
|
|
if (!eglChooseConfig(g_egl_dpy, config_attribs, &g_config, 1, &n) || n != 1)
|
|
goto error;
|
|
|
|
g_egl_ctx = eglCreateContext(g_egl_dpy, g_config, EGL_NO_CONTEXT, context_attribs);
|
|
if (!g_egl_ctx)
|
|
goto error;
|
|
|
|
g_egl_surf = eglCreateWindowSurface(g_egl_dpy, g_config, (EGLNativeWindowType)g_gbm_surface, NULL);
|
|
if (!g_egl_surf)
|
|
goto error;
|
|
|
|
if (!eglMakeCurrent(g_egl_dpy, g_egl_surf, g_egl_surf, g_egl_ctx))
|
|
goto error;
|
|
|
|
return true;
|
|
|
|
error:
|
|
gfx_ctx_destroy();
|
|
return false;
|
|
}
|
|
|
|
static void drm_fb_destroy_callback(struct gbm_bo *bo, void *data)
|
|
{
|
|
struct drm_fb *fb = (struct drm_fb*)data;
|
|
|
|
if (fb->fb_id)
|
|
drmModeRmFB(g_drm_fd, fb->fb_id);
|
|
|
|
free(fb);
|
|
}
|
|
|
|
static struct drm_fb *drm_fb_get_from_bo(struct gbm_bo *bo)
|
|
{
|
|
struct drm_fb *fb = (struct drm_fb*)gbm_bo_get_user_data(bo);
|
|
if (fb)
|
|
return fb;
|
|
|
|
fb = (struct drm_fb*)calloc(1, sizeof(*fb));
|
|
fb->bo = bo;
|
|
|
|
unsigned width = gbm_bo_get_width(bo);
|
|
unsigned height = gbm_bo_get_height(bo);
|
|
unsigned stride = gbm_bo_get_stride(bo);
|
|
unsigned handle = gbm_bo_get_handle(bo).u32;
|
|
|
|
int ret = drmModeAddFB(g_drm_fd, width, height, 24, 32, stride, handle, &fb->fb_id);
|
|
if (ret < 0)
|
|
{
|
|
RARCH_ERR("[KMS/EGL]: Failed to create FB: %s\n", strerror(errno));
|
|
free(fb);
|
|
return NULL;
|
|
}
|
|
|
|
gbm_bo_set_user_data(bo, fb, drm_fb_destroy_callback);
|
|
return fb;
|
|
}
|
|
|
|
bool gfx_ctx_set_video_mode(
|
|
unsigned width, unsigned height,
|
|
unsigned bits, bool fullscreen)
|
|
{
|
|
(void)bits;
|
|
if (g_inited)
|
|
return false;
|
|
|
|
struct sigaction sa = {{0}};
|
|
sa.sa_handler = sighandler;
|
|
sa.sa_flags = SA_RESTART;
|
|
sigemptyset(&sa.sa_mask);
|
|
sigaction(SIGINT, &sa, NULL);
|
|
sigaction(SIGTERM, &sa, NULL);
|
|
|
|
glClearColor(0.0, 0.0, 0.0, 1.0);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
eglSwapBuffers(g_egl_dpy, g_egl_surf);
|
|
|
|
g_bo = gbm_surface_lock_front_buffer(g_gbm_surface);
|
|
struct drm_fb *fb = drm_fb_get_from_bo(g_bo);
|
|
|
|
int ret = drmModeSetCrtc(g_drm_fd, g_crtc_id, fb->fb_id, 0, 0, &g_connector_id, 1, g_drm_mode);
|
|
if (ret < 0)
|
|
goto error;
|
|
|
|
g_inited = true;
|
|
return true;
|
|
|
|
error:
|
|
gfx_ctx_destroy();
|
|
return false;
|
|
}
|
|
|
|
void gfx_ctx_destroy(void)
|
|
{
|
|
if (g_egl_dpy)
|
|
{
|
|
if (g_egl_ctx)
|
|
{
|
|
eglMakeCurrent(g_egl_dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
|
eglDestroyContext(g_egl_dpy, g_egl_ctx);
|
|
}
|
|
|
|
if (g_egl_surf)
|
|
eglDestroySurface(g_egl_dpy, g_egl_surf);
|
|
eglTerminate(g_egl_dpy);
|
|
}
|
|
|
|
// 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_quit = 0;
|
|
g_crtc_id = 0;
|
|
g_connector_id = 0;
|
|
|
|
g_fb_width = 0;
|
|
g_fb_height = 0;
|
|
|
|
// TODO: Do we have to free this?
|
|
g_bo = NULL;
|
|
|
|
drmClose(g_drm_fd);
|
|
g_drm_fd = -1;
|
|
|
|
// Reinitialization fails for now ...
|
|
//g_inited = false;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void gfx_ctx_set_projection(gl_t *gl, const struct gl_ortho *ortho, bool allow_rotate)
|
|
{
|
|
// Calculate projection.
|
|
math_matrix proj;
|
|
matrix_ortho(&proj, ortho->left, ortho->right,
|
|
ortho->bottom, ortho->top, ortho->znear, ortho->zfar);
|
|
|
|
if (allow_rotate)
|
|
{
|
|
math_matrix rot;
|
|
matrix_rotate_z(&rot, M_PI * gl->rotation / 180.0f);
|
|
matrix_multiply(&proj, &rot, &proj);
|
|
}
|
|
|
|
gl->mvp = proj;
|
|
}
|
|
|
|
bool gfx_ctx_window_has_focus(void)
|
|
{
|
|
return g_inited;
|
|
}
|
|
|
|
gfx_ctx_proc_t gfx_ctx_get_proc_address(const char *symbol)
|
|
{
|
|
return eglGetProcAddress(symbol);
|
|
}
|
|
|