mirror of
https://github.com/libretro/RetroArch
synced 2024-12-29 12:31:05 +00:00
408 lines
9.9 KiB
C
408 lines
9.9 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2017 - 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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*/
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#include <stdint.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <math.h>
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#include <sched.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <libdrm/drm.h>
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#include <gbm.h>
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#include <string/stdstring.h>
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#include "../../configuration.h"
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#include "../../verbosity.h"
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#include "../../frontend/frontend_driver.h"
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#include "../common/drm_common.h"
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#include <go2/display.h>
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#include <drm/drm_fourcc.h>
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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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#if defined(HAVE_OPENGL) || defined(HAVE_OPENGLES)
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#include "../common/gl_common.h"
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#endif
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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_OPENGLES
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#ifndef EGL_OPENGL_ES3_BIT_KHR
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#define EGL_OPENGL_ES3_BIT_KHR 0x0040
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#endif
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#endif
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#ifndef EGL_PLATFORM_GBM_KHR
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#define EGL_PLATFORM_GBM_KHR 0x31D7
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#endif
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typedef struct gfx_ctx_go2_drm_data
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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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go2_display_t* display;
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go2_presenter_t* presenter;
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go2_context_t* context;
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unsigned fb_width;
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unsigned fb_height;
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unsigned ctx_w;
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unsigned ctx_h;
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unsigned native_width;
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unsigned native_height;
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bool core_hw_context_enable;
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} gfx_ctx_go2_drm_data_t;
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/* TODO/FIXME - static global */
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static enum gfx_ctx_api drm_api = GFX_CTX_NONE;
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/* Function callback */
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void (*swap_buffers)(void*);
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static void gfx_ctx_go2_drm_input_driver(void *data,
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const char *joypad_name,
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input_driver_t **input, void **input_data)
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{
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#ifdef HAVE_UDEV
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/* Try to set it to udev instead */
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void *udev = input_udev.init(joypad_name);
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if (udev)
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{
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*input = &input_udev;
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*input_data = udev;
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return;
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}
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#endif
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*input = NULL;
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*input_data = NULL;
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}
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static void *gfx_ctx_go2_drm_init(void *video_driver)
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{
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)
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calloc(1, sizeof(gfx_ctx_go2_drm_data_t));
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if (!drm)
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return NULL;
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drm->native_width = 480;
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drm->native_height = 320;
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drm->display = go2_display_create();
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drm->presenter = go2_presenter_create(drm->display,
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DRM_FORMAT_RGB565, 0xff000000, true);
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return drm;
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}
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static void gfx_ctx_go2_drm_destroy(void *data)
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{
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)data;
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if (!drm) return;
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if (drm->context)
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{
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go2_context_destroy(drm->context);
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drm->context = NULL;
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}
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go2_presenter_destroy(drm->presenter);
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drm->presenter = NULL;
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go2_display_destroy(drm->display);
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drm->display = NULL;
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}
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static enum gfx_ctx_api gfx_ctx_go2_drm_get_api(void *data) { return drm_api; }
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static bool gfx_ctx_go2_drm_bind_api(void *video_driver,
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enum gfx_ctx_api api, unsigned major, unsigned minor)
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{
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(void)video_driver;
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drm_api = api;
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#ifdef HAVE_EGL
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g_egl_major = major;
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g_egl_minor = minor;
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#endif
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switch (api)
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{
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case GFX_CTX_OPENGL_API:
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#if defined(HAVE_EGL) && defined(HAVE_OPENGL)
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#ifndef EGL_KHR_create_context
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if ((major * 1000 + minor) >= 3001)
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return false;
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#endif
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return egl_bind_api(EGL_OPENGL_API);
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#else
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break;
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#endif
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case GFX_CTX_OPENGL_ES_API:
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#if defined(HAVE_EGL) && defined(HAVE_OPENGLES)
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#ifndef EGL_KHR_create_context
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if (major >= 3)
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return false;
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#endif
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return egl_bind_api(EGL_OPENGL_ES_API);
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#else
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break;
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#endif
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case GFX_CTX_OPENVG_API:
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#if defined(HAVE_EGL) && defined(HAVE_VG)
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return egl_bind_api(EGL_OPENVG_API);
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#endif
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case GFX_CTX_NONE:
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default:
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break;
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}
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return false;
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}
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static void gfx_ctx_go2_drm_swap_interval(void *data, int interval)
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{
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(void)data;
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(void)interval;
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if (interval > 1)
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RARCH_WARN("[KMS]: Swap intervals > 1 currently not supported. Will use swap interval of 1.\n");
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}
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static bool gfx_ctx_go2_drm_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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settings_t *settings = config_get_ptr();
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struct retro_system_av_info *av_info = NULL;
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)data;
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bool use_ctx_scaling = settings->bools.video_ctx_scaling;
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if (!drm)
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return false;
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av_info = video_viewport_get_system_av_info();
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frontend_driver_install_signal_handler();
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if (use_ctx_scaling && !menu_driver_is_alive())
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{
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drm->fb_width = av_info->geometry.base_width;
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drm->fb_height = av_info->geometry.base_height;
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}
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else
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{
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drm->fb_width = drm->native_width;
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drm->fb_height = drm->native_height;
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}
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if (!drm->context)
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{
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go2_context_attributes_t attr;
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attr.major = 3;
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attr.minor = 2;
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attr.red_bits = 8;
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attr.green_bits = 8;
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attr.blue_bits = 8;
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attr.alpha_bits = 8;
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attr.depth_bits = 0;
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attr.stencil_bits = 0;
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drm->ctx_w = MAX(av_info->geometry.max_width, drm->native_width);
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drm->ctx_h = MAX(av_info->geometry.max_height, drm->native_height);
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drm->context = go2_context_create(
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drm->display, drm->ctx_w, drm->ctx_h, &attr);
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}
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go2_context_make_current(drm->context);
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glClear(GL_COLOR_BUFFER_BIT);
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return true;
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}
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static void gfx_ctx_go2_drm_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 w;
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unsigned h;
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gfx_ctx_go2_drm_data_t
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*drm = (gfx_ctx_go2_drm_data_t*)data;
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settings_t *settings = config_get_ptr();
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bool use_ctx_scaling = settings->bools.video_ctx_scaling;
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if (use_ctx_scaling && !menu_driver_is_alive())
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{
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struct retro_system_av_info*
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av_info = video_viewport_get_system_av_info();
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w = av_info->geometry.base_width;
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h = av_info->geometry.base_height;
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}
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else
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{
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w = drm->native_width;
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h = drm->native_height;
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}
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if (*width != w || *height != h)
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{
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*width = drm->fb_width = w;
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*height = drm->fb_height = h;
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*resize = false;
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}
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*quit = (bool)frontend_driver_get_signal_handler_state();
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}
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static bool gfx_ctx_go2_drm_has_focus(void *data) { return true; }
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static bool gfx_ctx_go2_drm_suppress_screensaver(void *data, bool enable) { return false; }
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static void gfx_ctx_go2_drm_swap_buffers(void *data)
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{
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gfx_ctx_go2_drm_data_t
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*drm = (gfx_ctx_go2_drm_data_t*)data;
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int out_w = drm->native_width;
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int out_h = drm->native_height;
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int out_x = 0;
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int out_y = 0;
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int src_w = drm->fb_width;
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int src_h = drm->fb_height;
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int src_x = 0;
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int src_y = drm->ctx_h - drm->fb_height;
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if (out_w != src_w || out_h != src_h)
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{
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out_w = out_h * video_driver_get_aspect_ratio();
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out_w = (out_w > 480) ? 480 : out_w;
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out_x = (480 - out_w) / 2;
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if (out_x < 0)
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out_x = 0;
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}
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#ifdef HAVE_EGL
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go2_context_swap_buffers(drm->context);
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go2_surface_t* surface = go2_context_surface_lock(drm->context);
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go2_presenter_post(drm->presenter,
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surface,
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src_x, src_y, src_w, src_h,
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out_y, out_x, out_h, out_w,
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GO2_ROTATION_DEGREES_270, 2);
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go2_context_surface_unlock(drm->context, surface);
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#endif
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}
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static uint32_t gfx_ctx_go2_drm_get_flags(void *data)
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{
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uint32_t flags = 0;
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)data;
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BIT32_SET(flags, GFX_CTX_FLAGS_CUSTOMIZABLE_SWAPCHAIN_IMAGES);
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if (drm->core_hw_context_enable)
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BIT32_SET(flags, GFX_CTX_FLAGS_GL_CORE_CONTEXT);
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if (string_is_equal(video_driver_get_ident(), "glcore"))
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{
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#if defined(HAVE_SLANG) && defined(HAVE_SPIRV_CROSS)
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BIT32_SET(flags, GFX_CTX_FLAGS_SHADERS_SLANG);
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#endif
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}
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else
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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_go2_drm_set_flags(void *data, uint32_t flags)
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{
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)data;
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if (BIT32_GET(flags, GFX_CTX_FLAGS_GL_CORE_CONTEXT))
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drm->core_hw_context_enable = true;
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}
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static void gfx_ctx_go2_drm_bind_hw_render(void *data, bool enable)
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{
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gfx_ctx_go2_drm_data_t *drm = (gfx_ctx_go2_drm_data_t*)data;
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#ifdef HAVE_EGL
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egl_bind_hw_render(&drm->egl, enable);
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#endif
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}
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const gfx_ctx_driver_t gfx_ctx_go2_drm = {
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gfx_ctx_go2_drm_init,
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gfx_ctx_go2_drm_destroy,
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gfx_ctx_go2_drm_get_api,
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gfx_ctx_go2_drm_bind_api,
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gfx_ctx_go2_drm_swap_interval,
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gfx_ctx_go2_drm_set_video_mode,
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NULL, /* get_video_size */
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drm_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_go2_drm_check_window,
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NULL, /* set_resize */
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gfx_ctx_go2_drm_has_focus,
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gfx_ctx_go2_drm_suppress_screensaver,
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false, /* has_windowed */
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gfx_ctx_go2_drm_swap_buffers,
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gfx_ctx_go2_drm_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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"kms",
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gfx_ctx_go2_drm_get_flags,
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gfx_ctx_go2_drm_set_flags,
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gfx_ctx_go2_drm_bind_hw_render,
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NULL,
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NULL
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};
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