mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-08 07:03:30 +00:00
566 lines
14 KiB
C
566 lines
14 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2012-2014 - Michael Lelli
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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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/* VideoCore context, for Rasperry Pi. */
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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 <unistd.h>
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#include <sched.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <EGL/eglext_brcm.h>
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#include <VG/openvg.h>
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#include <bcm_host.h>
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static bool g_use_hw_ctx;
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static EGLContext g_egl_hw_ctx;
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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 unsigned g_fb_width;
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static unsigned g_fb_height;
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static EGLImageKHR eglBuffer[MAX_EGLIMAGE_TEXTURES];
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static EGLContext g_eglimage_ctx;
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static EGLSurface g_pbuff_surf;
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static VGImage g_egl_vgimage[MAX_EGLIMAGE_TEXTURES];
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static bool g_smooth;
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static unsigned g_egl_res;
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static PFNEGLCREATEIMAGEKHRPROC peglCreateImageKHR;
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static PFNEGLDESTROYIMAGEKHRPROC peglDestroyImageKHR;
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static inline bool gfx_ctx_vc_egl_query_extension(const char *ext)
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{
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const char *str = (const char*)eglQueryString(g_egl_dpy, EGL_EXTENSIONS);
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bool ret = str && strstr(str, ext);
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RARCH_LOG("Querying EGL extension: %s => %s\n",
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ext, ret ? "exists" : "doesn't exist");
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return ret;
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}
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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_vc_swap_interval(void *data, unsigned interval)
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{
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(void)data;
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/* Can be called before initialization.
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* Some contexts require that swap interval
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* is known at startup time.
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*/
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g_interval = interval;
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if (g_egl_dpy)
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eglSwapInterval(g_egl_dpy, interval);
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}
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static void gfx_ctx_vc_check_window(void *data, bool *quit,
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bool *resize, unsigned *width, unsigned *height, unsigned frame_count)
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{
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(void)data;
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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 void gfx_ctx_vc_swap_buffers(void *data)
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{
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(void)data;
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eglSwapBuffers(g_egl_dpy, g_egl_surf);
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}
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static void gfx_ctx_vc_set_resize(void *data, unsigned width, unsigned height)
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{
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(void)data;
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(void)width;
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(void)height;
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}
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static void gfx_ctx_vc_update_window_title(void *data)
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{
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(void)data;
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char buf[128], buf_fps[128];
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bool fps_draw = g_settings.fps_show;
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gfx_get_fps(buf, sizeof(buf), fps_draw ? buf_fps : NULL, sizeof(buf_fps));
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if (fps_draw)
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msg_queue_push(g_extern.msg_queue, buf_fps, 1, 1);
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}
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static void gfx_ctx_vc_get_video_size(void *data,
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unsigned *width, unsigned *height)
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{
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(void)data;
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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 void gfx_ctx_vc_destroy(void *data);
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static bool gfx_ctx_vc_init(void *data)
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{
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RARCH_LOG("[VC/EGL]: Initializing...\n");
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if (g_inited)
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{
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RARCH_ERR("[VC/EGL]: Attempted to re-initialize driver.\n");
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return false;
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}
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EGLint num_config;
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static EGL_DISPMANX_WINDOW_T nativewindow;
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DISPMANX_ELEMENT_HANDLE_T dispman_element;
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DISPMANX_DISPLAY_HANDLE_T dispman_display;
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DISPMANX_UPDATE_HANDLE_T dispman_update;
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DISPMANX_MODEINFO_T dispman_modeinfo;
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VC_RECT_T dst_rect;
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VC_RECT_T src_rect;
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static const EGLint attribute_list[] =
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{
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_ALPHA_SIZE, 8,
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_NONE
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};
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static const EGLint context_attributes[] =
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{
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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bcm_host_init();
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/* Get an EGL display connection. */
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g_egl_dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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if (!g_egl_dpy)
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goto error;
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/* Initialize the EGL display connection. */
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if (!eglInitialize(g_egl_dpy, NULL, NULL))
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goto error;
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/* Get an appropriate EGL frame buffer configuration. */
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if (!eglChooseConfig(g_egl_dpy, attribute_list, &g_config, 1, &num_config))
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goto error;
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/* Create an EGL rendering context. */
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g_egl_ctx = eglCreateContext(
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g_egl_dpy, g_config, EGL_NO_CONTEXT,
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(g_api == GFX_CTX_OPENGL_ES_API) ? context_attributes : NULL);
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if (!g_egl_ctx)
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goto error;
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if (g_use_hw_ctx)
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{
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g_egl_hw_ctx = eglCreateContext(g_egl_dpy, g_config, g_egl_ctx,
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context_attributes);
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RARCH_LOG("[VC/EGL]: Created shared context: %p.\n", (void*)g_egl_hw_ctx);
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if (g_egl_hw_ctx == EGL_NO_CONTEXT)
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goto error;
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}
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/* Create an EGL window surface. */
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if (graphics_get_display_size(0 /* LCD */, &g_fb_width, &g_fb_height) < 0)
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goto error;
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dst_rect.x = 0;
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dst_rect.y = 0;
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dst_rect.width = g_fb_width;
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dst_rect.height = g_fb_height;
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src_rect.x = 0;
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src_rect.y = 0;
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src_rect.width = g_fb_width << 16;
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src_rect.height = g_fb_height << 16;
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dispman_display = vc_dispmanx_display_open(0 /* LCD */);
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vc_dispmanx_display_get_info(dispman_display, &dispman_modeinfo);
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dispman_update = vc_dispmanx_update_start(0);
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VC_DISPMANX_ALPHA_T alpha;
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alpha.flags = DISPMANX_FLAGS_ALPHA_FIXED_ALL_PIXELS;
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alpha.opacity = 255;
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alpha.mask = 0;
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dispman_element = vc_dispmanx_element_add(dispman_update, dispman_display,
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0 /*layer*/, &dst_rect, 0 /*src*/,
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&src_rect, DISPMANX_PROTECTION_NONE, &alpha, 0 /*clamp*/, DISPMANX_NO_ROTATE);
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nativewindow.element = dispman_element;
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nativewindow.width = g_fb_width;
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nativewindow.height = g_fb_height;
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vc_dispmanx_update_submit_sync(dispman_update);
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g_egl_surf = eglCreateWindowSurface(g_egl_dpy, g_config, &nativewindow, NULL);
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if (!g_egl_surf)
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goto error;
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/* Connect the context to the surface. */
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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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return true;
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error:
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gfx_ctx_vc_destroy(data);
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return false;
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}
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static bool gfx_ctx_vc_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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if (g_inited)
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return false;
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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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gfx_ctx_vc_swap_interval(data, g_interval);
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g_inited = true;
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return true;
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}
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static bool gfx_ctx_vc_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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(void)data;
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(void)major;
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(void)minor;
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g_api = api;
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switch (api)
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{
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case GFX_CTX_OPENGL_API:
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return eglBindAPI(EGL_OPENGL_API);
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case GFX_CTX_OPENGL_ES_API:
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return eglBindAPI(EGL_OPENGL_ES_API);
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case GFX_CTX_OPENVG_API:
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return eglBindAPI(EGL_OPENVG_API);
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default:
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return false;
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}
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}
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static void gfx_ctx_vc_destroy(void *data)
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{
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(void)data;
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unsigned i;
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if (g_egl_dpy)
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{
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for (i = 0; i < MAX_EGLIMAGE_TEXTURES; i++)
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{
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if (eglBuffer[i] && peglDestroyImageKHR)
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{
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eglBindAPI(EGL_OPENVG_API);
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eglMakeCurrent(g_egl_dpy,
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g_pbuff_surf, g_pbuff_surf, g_eglimage_ctx);
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peglDestroyImageKHR(g_egl_dpy, eglBuffer[i]);
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}
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if (g_egl_vgimage[i])
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{
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eglBindAPI(EGL_OPENVG_API);
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eglMakeCurrent(g_egl_dpy,
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g_pbuff_surf, g_pbuff_surf, g_eglimage_ctx);
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vgDestroyImage(g_egl_vgimage[i]);
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}
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}
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if (g_egl_ctx)
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{
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gfx_ctx_vc_bind_api(data, g_api, 0, 0);
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eglMakeCurrent(g_egl_dpy,
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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_hw_ctx)
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eglDestroyContext(g_egl_dpy, g_egl_hw_ctx);
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if (g_eglimage_ctx)
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{
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eglBindAPI(EGL_OPENVG_API);
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eglMakeCurrent(g_egl_dpy,
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EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroyContext(g_egl_dpy, g_eglimage_ctx);
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}
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if (g_egl_surf)
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{
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gfx_ctx_vc_bind_api(data, g_api, 0, 0);
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eglDestroySurface(g_egl_dpy, g_egl_surf);
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}
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if (g_pbuff_surf)
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{
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eglBindAPI(EGL_OPENVG_API);
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eglDestroySurface(g_egl_dpy, g_pbuff_surf);
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}
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eglBindAPI(EGL_OPENVG_API);
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eglMakeCurrent(g_egl_dpy,
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EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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gfx_ctx_vc_bind_api(data, g_api, 0, 0);
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eglMakeCurrent(g_egl_dpy,
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EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglTerminate(g_egl_dpy);
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}
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g_egl_ctx = NULL;
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g_egl_hw_ctx = NULL;
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g_eglimage_ctx = NULL;
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g_egl_surf = NULL;
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g_pbuff_surf = NULL;
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g_egl_dpy = NULL;
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g_config = 0;
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g_inited = false;
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for (i = 0; i < MAX_EGLIMAGE_TEXTURES; i++)
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{
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eglBuffer[i] = NULL;
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g_egl_vgimage[i] = 0;
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}
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}
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static void gfx_ctx_vc_input_driver(void *data,
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const input_driver_t **input, void **input_data)
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{
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(void)data;
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*input = NULL;
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*input_data = NULL;
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}
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static bool gfx_ctx_vc_has_focus(void *data)
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{
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(void)data;
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return g_inited;
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}
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static bool gfx_ctx_vc_has_windowed(void *data)
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{
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(void)data;
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return false;
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}
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static gfx_ctx_proc_t gfx_ctx_vc_get_proc_address(const char *symbol)
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{
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return eglGetProcAddress(symbol);
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}
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static float gfx_ctx_vc_translate_aspect(void *data,
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unsigned width, unsigned height)
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{
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(void)data;
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/* Check for SD televisions: they should always be 4:3. */
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if ((width == 640 || width == 720) && (height == 480 || height == 576))
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return 4.0f / 3.0f;
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else
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return (float)width / height;
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}
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static bool gfx_ctx_vc_init_egl_image_buffer(void *data,
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const video_info_t *video)
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{
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/* Don't bother, we just use VGImages for our EGLImage anyway. */
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if (g_api == GFX_CTX_OPENVG_API)
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return false;
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peglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC)
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gfx_ctx_vc_get_proc_address("eglCreateImageKHR");
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peglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC)
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gfx_ctx_vc_get_proc_address("eglDestroyImageKHR");
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if (!peglCreateImageKHR || !peglDestroyImageKHR
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|| !gfx_ctx_vc_egl_query_extension("KHR_image"))
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return false;
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g_egl_res = video->input_scale * RARCH_SCALE_BASE;
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|
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EGLint pbufsurface_list[] =
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{
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EGL_WIDTH, g_egl_res,
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EGL_HEIGHT, g_egl_res,
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EGL_NONE
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};
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|
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EGLBoolean result;
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eglBindAPI(EGL_OPENVG_API);
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g_pbuff_surf = eglCreatePbufferSurface(g_egl_dpy, g_config, pbufsurface_list);
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if (g_pbuff_surf == EGL_NO_SURFACE)
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{
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RARCH_ERR("[VideoCore:EGLImage] failed to create PbufferSurface\n");
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goto fail;
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}
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|
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g_eglimage_ctx = eglCreateContext(g_egl_dpy, g_config, NULL, NULL);
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if (g_eglimage_ctx == EGL_NO_CONTEXT)
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{
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RARCH_ERR("[VideoCore:EGLImage] failed to create context\n");
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goto fail;
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}
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|
|
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/* Test to make sure we can switch context. */
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result = eglMakeCurrent(g_egl_dpy, g_pbuff_surf, g_pbuff_surf, g_eglimage_ctx);
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if (result == EGL_FALSE)
|
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{
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RARCH_ERR("[VideoCore:EGLImage] failed to make context current\n");
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goto fail;
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}
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|
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gfx_ctx_vc_bind_api(data, g_api, 0, 0);
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eglMakeCurrent(g_egl_dpy, g_egl_surf, g_egl_surf, g_egl_ctx);
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g_smooth = video->smooth;
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return true;
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|
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fail:
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if (g_pbuff_surf != EGL_NO_SURFACE)
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{
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eglDestroySurface(g_egl_dpy, g_pbuff_surf);
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g_pbuff_surf = EGL_NO_SURFACE;
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}
|
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|
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if (g_eglimage_ctx != EGL_NO_CONTEXT)
|
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{
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eglDestroyContext(g_egl_dpy, g_eglimage_ctx);
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g_pbuff_surf = EGL_NO_CONTEXT;
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}
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|
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gfx_ctx_vc_bind_api(data, g_api, 0, 0);
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eglMakeCurrent(g_egl_dpy, g_egl_surf, g_egl_surf, g_egl_ctx);
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|
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return false;
|
|
}
|
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|
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static bool gfx_ctx_vc_write_egl_image(void *data, const void *frame, unsigned width,
|
|
unsigned height, unsigned pitch, bool rgb32, unsigned index, void **image_handle)
|
|
{
|
|
bool ret = false;
|
|
|
|
if (index >= MAX_EGLIMAGE_TEXTURES)
|
|
{
|
|
*image_handle = NULL;
|
|
return false;
|
|
}
|
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|
|
eglBindAPI(EGL_OPENVG_API);
|
|
eglMakeCurrent(g_egl_dpy, g_pbuff_surf, g_pbuff_surf, g_eglimage_ctx);
|
|
|
|
if (!eglBuffer[index] || !g_egl_vgimage[index])
|
|
{
|
|
g_egl_vgimage[index] = vgCreateImage(
|
|
rgb32 ? VG_sXRGB_8888 : VG_sRGB_565,
|
|
g_egl_res,
|
|
g_egl_res,
|
|
VG_IMAGE_QUALITY_NONANTIALIASED);
|
|
eglBuffer[index] = peglCreateImageKHR(
|
|
g_egl_dpy,
|
|
g_eglimage_ctx,
|
|
EGL_VG_PARENT_IMAGE_KHR,
|
|
(EGLClientBuffer)g_egl_vgimage[index],
|
|
NULL);
|
|
ret = true;
|
|
}
|
|
|
|
vgImageSubData(
|
|
g_egl_vgimage[index],
|
|
frame, pitch,
|
|
(rgb32 ? VG_sXRGB_8888 : VG_sRGB_565),
|
|
0,
|
|
0,
|
|
width,
|
|
height);
|
|
*image_handle = eglBuffer[index];
|
|
|
|
gfx_ctx_vc_bind_api(data, g_api, 0, 0);
|
|
eglMakeCurrent(g_egl_dpy, g_egl_surf, g_egl_surf, g_egl_ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void gfx_ctx_vc_bind_hw_render(void *data, bool enable)
|
|
{
|
|
(void)data;
|
|
g_use_hw_ctx = enable;
|
|
|
|
if (g_egl_dpy && g_egl_surf)
|
|
eglMakeCurrent(g_egl_dpy, g_egl_surf,
|
|
g_egl_surf, enable ? g_egl_hw_ctx : g_egl_ctx);
|
|
}
|
|
|
|
const gfx_ctx_driver_t gfx_ctx_videocore = {
|
|
gfx_ctx_vc_init,
|
|
gfx_ctx_vc_destroy,
|
|
gfx_ctx_vc_bind_api,
|
|
gfx_ctx_vc_swap_interval,
|
|
gfx_ctx_vc_set_video_mode,
|
|
gfx_ctx_vc_get_video_size,
|
|
gfx_ctx_vc_translate_aspect,
|
|
gfx_ctx_vc_update_window_title,
|
|
gfx_ctx_vc_check_window,
|
|
gfx_ctx_vc_set_resize,
|
|
gfx_ctx_vc_has_focus,
|
|
gfx_ctx_vc_has_windowed,
|
|
gfx_ctx_vc_swap_buffers,
|
|
gfx_ctx_vc_input_driver,
|
|
gfx_ctx_vc_get_proc_address,
|
|
gfx_ctx_vc_init_egl_image_buffer,
|
|
gfx_ctx_vc_write_egl_image,
|
|
NULL,
|
|
"videocore",
|
|
gfx_ctx_vc_bind_hw_render,
|
|
};
|