mirror of
https://github.com/libretro/RetroArch
synced 2024-07-08 20:25:47 +00:00
426 lines
12 KiB
C
426 lines
12 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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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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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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/* Includes and defines for framebuffer size retrieval */
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#include <linux/fb.h>
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#include <linux/vt.h>
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#include <compat/strl.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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#ifdef HAVE_EGL
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#include "../common/egl_common.h"
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#endif
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#include "../../frontend/frontend_driver.h"
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#include "../../verbosity.h"
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#include "../../configuration.h"
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#include <streams/file_stream.h>
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typedef struct
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{
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#ifdef HAVE_EGL
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egl_ctx_data_t egl;
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#endif
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struct
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{
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unsigned short width;
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unsigned short height;
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} native_window;
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unsigned width, height;
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float refresh_rate;
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bool resize;
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} mali_ctx_data_t;
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#ifndef EGL_OPENGL_ES3_BIT
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#define EGL_OPENGL_ES3_BIT 0x0040
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#endif
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enum gfx_ctx_mali_fbdev_flags
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{
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GFX_CTX_MALI_FBDEV_FLAG_WAS_THREADED = (1 << 0),
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GFX_CTX_MALI_FBDEV_FLAG_HW_CTX_TRIGGER = (1 << 1),
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GFX_CTX_MALI_FBDEV_FLAG_RESTART_PENDING = (1 << 2),
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GFX_CTX_MALI_FBDEV_FLAG_GLES3 = (1 << 3)
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};
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static mali_ctx_data_t *gfx_ctx_mali_fbdev_global = NULL;
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static uint8_t mali_flags = 0;
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static int gfx_ctx_mali_fbdev_get_vinfo(void *data)
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{
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struct fb_var_screeninfo vinfo;
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int fd = open("/dev/fb0", O_RDWR);
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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if (!mali || ioctl(fd, FBIOGET_VSCREENINFO, &vinfo) < 0)
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goto error;
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/*Workaround to reset yoffset when returned >0 from driver */
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if (vinfo.yoffset != 0)
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{
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vinfo.yoffset = 0;
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if (ioctl(fd, FBIOPUT_VSCREENINFO, &vinfo))
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RARCH_ERR("Error resetting yoffset to 0.\n");
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}
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close(fd);
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fd = -1;
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mali->width = vinfo.xres;
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mali->height = vinfo.yres;
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mali->native_window.width = vinfo.xres;
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mali->native_window.height = vinfo.yres;
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if (vinfo.pixclock)
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{
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mali->refresh_rate = 1000000.0f / vinfo.pixclock * 1000000.0f /
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(vinfo.yres + vinfo.upper_margin + vinfo.lower_margin + vinfo.vsync_len) /
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(vinfo.xres + vinfo.left_margin + vinfo.right_margin + vinfo.hsync_len);
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}
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else
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{
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char tmp[32];
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/* Workaround to retrieve current refresh rate if no info is available from IOCTL.
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If this fails as well, 60Hz is assumed... */
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int j = 0;
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float k = 60.0f;
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RFILE *fr = filestream_open("/sys/class/display/mode", RETRO_VFS_FILE_ACCESS_READ, RETRO_VFS_FILE_ACCESS_HINT_NONE);
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if (fr)
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{
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if (filestream_gets(fr, tmp, sizeof(tmp)))
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{
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int i;
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for (i = 0; i < sizeof(tmp); i++)
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{
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if (*(tmp + i) == 'p' || *(tmp + i) == 'i')
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j = i;
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else if (*(tmp + i) == 'h')
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*(tmp + i) = '\0';
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}
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k = j ? atof(tmp + j + 1) : k;
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}
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filestream_close(fr);
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}
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mali->refresh_rate = k;
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}
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return 0;
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error:
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if (fd >= 0)
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close(fd);
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return 1;
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}
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static void gfx_ctx_mali_fbdev_clear_screen(void)
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{
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long buffer_size;
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struct fb_var_screeninfo vinfo;
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void *buffer = NULL;
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int fd = open("/dev/fb0", O_RDWR);
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ioctl (fd, FBIOGET_VSCREENINFO, &vinfo);
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buffer_size = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
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buffer = calloc(1, buffer_size);
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write(fd,buffer,buffer_size);
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free(buffer);
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close(fd);
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/* Clear framebuffer and set cursor on again */
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if (!system(NULL) && !system("which setterm > /dev/null 2>&1"))
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{
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int fd = open("/dev/tty", O_RDWR);
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ioctl(fd, VT_ACTIVATE, 5);
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ioctl(fd, VT_ACTIVATE, 1);
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close(fd);
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system("setterm -cursor on");
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}
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}
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static void gfx_ctx_mali_fbdev_destroy_really(void)
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{
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if (gfx_ctx_mali_fbdev_global)
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{
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#ifdef HAVE_EGL
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egl_destroy(&gfx_ctx_mali_fbdev_global->egl);
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#endif
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gfx_ctx_mali_fbdev_global->resize=false;
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free(gfx_ctx_mali_fbdev_global);
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gfx_ctx_mali_fbdev_global=NULL;
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}
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}
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static void gfx_ctx_mali_fbdev_maybe_restart(void)
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{
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if (!(runloop_get_flags() & RUNLOOP_FLAG_SHUTDOWN_INITIATED))
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frontend_driver_set_fork(FRONTEND_FORK_RESTART);
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}
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/* TODO/FIXME:
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As egl_destroy does not work properly with libmali (big fps drop after destroy and initialization/creation of new context/surface), it is not used.
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A global pointer is initialized at startup in gfx_ctx_mali_fbdev_init, and returned each time gfx_ctx_mali_fbdev_init is called.
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Originally gfx_ctx_mali_fbdev_init initialized a new pointer each time (destroyed each time with egl_destroy),
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and context/surface creation occurred in gfx_ctx_mali_fbdev_set_video_mode.
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With this workaround it's all created once in gfx_ctx_mali_fbdev_init and never destroyed.
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Additional workarounds (RA restart) are applied in gfx_ctx_mali_fbdev_destroy in order to avoid
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segmentation fault when video threaded switch is activated or on exit from cores checking GFX_CTX_MALI_FBDEV_FLAG_HW_CTX_TRIGGER flag.
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All these workarounds should be reverted when and if egl_destroy issues in libmali blobs are fixed.
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*/
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static void gfx_ctx_mali_fbdev_destroy(void *data)
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{
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if (runloop_get_flags() & RUNLOOP_FLAG_SHUTDOWN_INITIATED)
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{
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if (!(mali_flags & GFX_CTX_MALI_FBDEV_FLAG_RESTART_PENDING))
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{
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gfx_ctx_mali_fbdev_destroy_really();
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gfx_ctx_mali_fbdev_clear_screen();
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}
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}
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else
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{
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if ( (mali_flags & GFX_CTX_MALI_FBDEV_FLAG_HW_CTX_TRIGGER)
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|| (bool)(mali_flags & GFX_CTX_MALI_FBDEV_FLAG_WAS_THREADED)
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!= *video_driver_get_threaded())
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{
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gfx_ctx_mali_fbdev_destroy_really();
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mali_flags |= GFX_CTX_MALI_FBDEV_FLAG_RESTART_PENDING;
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if (!(mali_flags & GFX_CTX_MALI_FBDEV_FLAG_HW_CTX_TRIGGER))
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gfx_ctx_mali_fbdev_maybe_restart();
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}
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}
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}
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static void gfx_ctx_mali_fbdev_get_video_size(void *data,
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unsigned *width, unsigned *height)
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{
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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*width = mali->width;
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*height = mali->height;
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}
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static void *gfx_ctx_mali_fbdev_init(void *video_driver)
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{
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mali_ctx_data_t *mali = NULL;
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if (gfx_ctx_mali_fbdev_global)
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return gfx_ctx_mali_fbdev_global;
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#ifdef HAVE_EGL
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EGLint n;
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EGLint major, minor;
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EGLint format;
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EGLint attribs_init[] = {
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_BLUE_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_RED_SIZE, 8,
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EGL_ALPHA_SIZE, 8,
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EGL_NONE
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};
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EGLint attribs_create[] = {
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EGL_CONTEXT_CLIENT_VERSION, (mali_flags & GFX_CTX_MALI_FBDEV_FLAG_GLES3) ? 3 : 2,
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EGL_NONE
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};
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if (mali_flags & GFX_CTX_MALI_FBDEV_FLAG_GLES3)
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attribs_init[1] = EGL_OPENGL_ES3_BIT;
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RARCH_LOG("GLES version = %d.\n", (mali_flags & GFX_CTX_MALI_FBDEV_FLAG_GLES3) ? 3 : 2);
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#endif
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if (!(mali = (mali_ctx_data_t*)calloc(1, sizeof(*mali))))
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return NULL;
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if (gfx_ctx_mali_fbdev_get_vinfo(mali))
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goto error;
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#ifdef HAVE_EGL
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frontend_driver_install_signal_handler();
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mali->egl.use_hw_ctx = true;
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if (!egl_init_context(&mali->egl, EGL_NONE, EGL_DEFAULT_DISPLAY,
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&major, &minor, &n, attribs_init, NULL) ||
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!egl_create_context(&mali->egl, attribs_create) ||
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!egl_create_surface(&mali->egl, &mali->native_window))
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goto error;
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#endif
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gfx_ctx_mali_fbdev_global = mali;
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if (*video_driver_get_threaded())
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mali_flags |= GFX_CTX_MALI_FBDEV_FLAG_WAS_THREADED;
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else
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mali_flags &= ~GFX_CTX_MALI_FBDEV_FLAG_WAS_THREADED;
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return mali;
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error:
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egl_report_error();
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gfx_ctx_mali_fbdev_destroy(mali);
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return NULL;
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}
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static void gfx_ctx_mali_fbdev_check_window(void *data, bool *quit,
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bool *resize, unsigned *width, unsigned *height)
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{
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unsigned new_width, new_height;
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gfx_ctx_mali_fbdev_get_video_size(data, &new_width, &new_height);
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if (new_width != *width || new_height != *height)
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{
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*width = new_width;
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*height = new_height;
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*resize = true;
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}
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*quit = (bool)frontend_driver_get_signal_handler_state();
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if (mali_flags & GFX_CTX_MALI_FBDEV_FLAG_RESTART_PENDING)
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gfx_ctx_mali_fbdev_maybe_restart();
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}
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static bool gfx_ctx_mali_fbdev_set_video_mode(void *data,
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unsigned width, unsigned height,
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bool fullscreen)
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{
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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if (video_driver_is_hw_context())
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mali_flags |= GFX_CTX_MALI_FBDEV_FLAG_HW_CTX_TRIGGER;
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if (gfx_ctx_mali_fbdev_get_vinfo(mali))
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{
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gfx_ctx_mali_fbdev_destroy(data);
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return false;
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}
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width = mali->width;
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height = mali->height;
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return true;
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}
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static void gfx_ctx_mali_fbdev_input_driver(void *data,
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const char *name,
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input_driver_t **input, void **input_data)
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{
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*input = NULL;
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*input_data = NULL;
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}
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static enum gfx_ctx_api gfx_ctx_mali_fbdev_get_api(void *data)
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{
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return GFX_CTX_OPENGL_ES_API;
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}
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static bool gfx_ctx_mali_fbdev_bind_api(void *data,
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enum gfx_ctx_api api, unsigned major, unsigned minor)
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{
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unsigned version = major * 100 + minor;
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if (version >= 300)
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mali_flags |= GFX_CTX_MALI_FBDEV_FLAG_GLES3;
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return (api == GFX_CTX_OPENGL_ES_API);
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}
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static bool gfx_ctx_mali_fbdev_has_focus(void *data) { return true; }
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static bool gfx_ctx_mali_fbdev_suppress_screensaver(void *data, bool enable) { return false; }
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static void gfx_ctx_mali_fbdev_set_swap_interval(void *data,
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int swap_interval)
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{
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#ifdef HAVE_EGL
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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egl_set_swap_interval(&mali->egl, swap_interval);
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#endif
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}
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static void gfx_ctx_mali_fbdev_swap_buffers(void *data)
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{
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#ifdef HAVE_EGL
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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egl_swap_buffers(&mali->egl);
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#endif
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}
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static void gfx_ctx_mali_fbdev_bind_hw_render(void *data, bool enable)
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{
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#ifdef HAVE_EGL
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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egl_bind_hw_render(&mali->egl, enable);
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#endif
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}
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static uint32_t gfx_ctx_mali_fbdev_get_flags(void *data)
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{
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uint32_t flags = 0;
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BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_GLSL);
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return flags;
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}
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static void gfx_ctx_mali_fbdev_set_flags(void *data, uint32_t flags) { }
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static float gfx_ctx_mali_fbdev_get_refresh_rate(void *data)
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{
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mali_ctx_data_t *mali = (mali_ctx_data_t*)data;
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return mali->refresh_rate;
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}
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const gfx_ctx_driver_t gfx_ctx_mali_fbdev = {
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gfx_ctx_mali_fbdev_init,
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gfx_ctx_mali_fbdev_destroy,
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gfx_ctx_mali_fbdev_get_api,
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gfx_ctx_mali_fbdev_bind_api,
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gfx_ctx_mali_fbdev_set_swap_interval,
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gfx_ctx_mali_fbdev_set_video_mode,
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gfx_ctx_mali_fbdev_get_video_size,
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gfx_ctx_mali_fbdev_get_refresh_rate,
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NULL, /* get_video_output_size */
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NULL, /* get_video_output_prev */
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NULL, /* get_video_output_next */
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NULL, /* get_metrics */
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NULL,
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NULL, /* update_title */
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gfx_ctx_mali_fbdev_check_window,
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NULL, /* set_resize */
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gfx_ctx_mali_fbdev_has_focus,
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gfx_ctx_mali_fbdev_suppress_screensaver,
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false, /* has_windowed */
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gfx_ctx_mali_fbdev_swap_buffers,
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gfx_ctx_mali_fbdev_input_driver,
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#ifdef HAVE_EGL
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egl_get_proc_address,
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#else
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NULL,
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#endif
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NULL,
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NULL,
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NULL,
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"fbdev_mali",
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gfx_ctx_mali_fbdev_get_flags,
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gfx_ctx_mali_fbdev_set_flags,
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gfx_ctx_mali_fbdev_bind_hw_render,
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NULL,
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NULL
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};
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