mirror of
https://github.com/CTCaer/RetroArch.git
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442 lines
13 KiB
C
442 lines
13 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2012 - Hans-Kristian Arntzen
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* Copyright (C) 2012 - 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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#include <math.h>
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#include <unistd.h>
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#include <bcm_host.h>
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#include <VG/openvg.h>
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#include <VG/vgu.h>
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include "../libretro.h"
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#include "../general.h"
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#include "../input/linuxraw_input.h"
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#include "../driver.h"
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#ifdef HAVE_FREETYPE
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#include "fonts/fonts.h"
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#include "../file.h"
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#endif
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typedef struct
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{
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EGLDisplay mDisplay;
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EGLSurface mSurface;
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EGLContext mContext;
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uint32_t mScreenWidth;
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uint32_t mScreenHeight;
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float mScreenAspect;
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bool mKeepAspect;
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unsigned mTextureWidth;
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unsigned mTextureHeight;
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unsigned mRenderWidth;
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unsigned mRenderHeight;
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unsigned x1, y1, x2, y2;
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VGImageFormat mTexType;
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VGImage mImage;
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VGfloat mTransformMatrix[9];
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VGint scissor[4];
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#ifdef HAVE_FREETYPE
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char *mLastMsg;
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uint32_t mFontHeight;
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VGFont mFont;
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font_renderer_t *mFontRenderer;
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bool mFontsOn;
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VGuint mMsgLength;
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VGuint mGlyphIndices[1024];
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VGPaint mPaintFg;
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VGPaint mPaintBg;
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#endif
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} rpi_t;
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static volatile sig_atomic_t rpi_shutdown = 0;
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static void rpi_kill(int sig)
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{
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(void)sig;
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rpi_shutdown = 1;
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}
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static void rpi_set_nonblock_state(void *data, bool state)
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{
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rpi_t *rpi = (rpi_t*)data;
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eglSwapInterval(rpi->mDisplay, state ? 0 : 1);
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}
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static void *rpi_init(const video_info_t *video, const input_driver_t **input, void **input_data)
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{
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int32_t success;
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EGLBoolean result;
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EGLint num_config;
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rpi_t *rpi = (rpi_t*)calloc(1, sizeof(rpi_t));
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*input = NULL;
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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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EGLConfig config;
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bcm_host_init();
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// get an EGL display connection
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rpi->mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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rarch_assert(rpi->mDisplay != EGL_NO_DISPLAY);
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// initialize the EGL display connection
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result = eglInitialize(rpi->mDisplay, NULL, NULL);
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rarch_assert(result != EGL_FALSE);
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eglBindAPI(EGL_OPENVG_API);
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// get an appropriate EGL frame buffer configuration
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result = eglChooseConfig(rpi->mDisplay, attribute_list, &config, 1, &num_config);
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rarch_assert(result != EGL_FALSE);
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// create an EGL rendering context
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rpi->mContext = eglCreateContext(rpi->mDisplay, config, EGL_NO_CONTEXT, NULL);
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rarch_assert(rpi->mContext != EGL_NO_CONTEXT);
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// create an EGL window surface
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success = graphics_get_display_size(0 /* LCD */, &rpi->mScreenWidth, &rpi->mScreenHeight);
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rarch_assert(success >= 0);
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dst_rect.x = 0;
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dst_rect.y = 0;
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dst_rect.width = rpi->mScreenWidth;
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dst_rect.height = rpi->mScreenHeight;
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src_rect.x = 0;
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src_rect.y = 0;
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src_rect.width = rpi->mScreenWidth << 16;
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src_rect.height = rpi->mScreenHeight << 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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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, 0 /*alpha*/, 0 /*clamp*/, DISPMANX_NO_ROTATE);
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nativewindow.element = dispman_element;
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nativewindow.width = rpi->mScreenWidth;
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nativewindow.height = rpi->mScreenHeight;
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vc_dispmanx_update_submit_sync(dispman_update);
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rpi->mSurface = eglCreateWindowSurface(rpi->mDisplay, config, &nativewindow, NULL);
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rarch_assert(rpi->mSurface != EGL_NO_SURFACE);
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// connect the context to the surface
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result = eglMakeCurrent(rpi->mDisplay, rpi->mSurface, rpi->mSurface, rpi->mContext);
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rarch_assert(result != EGL_FALSE);
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rpi->mTexType = video->rgb32 ? VG_sABGR_8888 : VG_sARGB_1555;
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rpi->mKeepAspect = video->force_aspect;
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// check for SD televisions: they should always be 4:3
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if (dispman_modeinfo.width == 720 && (dispman_modeinfo.height == 480 || dispman_modeinfo.height == 576))
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rpi->mScreenAspect = 4.0f / 3.0f;
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else
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rpi->mScreenAspect = (float)dispman_modeinfo.width / dispman_modeinfo.height;
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VGfloat clearColor[4] = {0, 0, 0, 1};
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vgSetfv(VG_CLEAR_COLOR, 4, clearColor);
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rpi->mTextureWidth = rpi->mTextureHeight = video->input_scale * RARCH_SCALE_BASE;
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// We can't use the native format because there's no sXRGB_1555 type and
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// emulation cores can send 0 in the top bit. We lose some speed on
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// conversion but I doubt it has any real affect, since we are only drawing
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// one image at the end of the day. Still keep the alpha channel for ABGR.
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rpi->mImage = vgCreateImage(video->rgb32 ? VG_sABGR_8888 : VG_sXBGR_8888,
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rpi->mTextureWidth, rpi->mTextureHeight,
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video->smooth ? VG_IMAGE_QUALITY_BETTER : VG_IMAGE_QUALITY_NONANTIALIASED);
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rpi_set_nonblock_state(rpi, !video->vsync);
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linuxraw_input_t *linuxraw_input = (linuxraw_input_t*)input_linuxraw.init();
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if (linuxraw_input)
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{
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*input = (const input_driver_t *)&input_linuxraw;
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*input_data = linuxraw_input;
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}
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#ifdef HAVE_FREETYPE
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if (g_settings.video.font_enable)
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{
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rpi->mFont = vgCreateFont(0);
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rpi->mFontHeight = g_settings.video.font_size * (g_settings.video.font_scale ? (float) rpi->mScreenWidth / 1280.0f : 1.0f);
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const char *path = g_settings.video.font_path;
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if (!*path || !path_file_exists(path))
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path = font_renderer_get_default_font();
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rpi->mFontRenderer = font_renderer_new(path, rpi->mFontHeight);
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if (rpi->mFont != VG_INVALID_HANDLE && rpi->mFontRenderer)
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{
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rpi->mFontsOn = true;
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rpi->mPaintFg = vgCreatePaint();
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rpi->mPaintBg = vgCreatePaint();
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VGfloat paintFg[] = { g_settings.video.msg_color_r, g_settings.video.msg_color_g, g_settings.video.msg_color_b, 1.0f };
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VGfloat paintBg[] = { g_settings.video.msg_color_r / 2.0f, g_settings.video.msg_color_g / 2.0f, g_settings.video.msg_color_b / 2.0f, 0.5f };
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vgSetParameteri(rpi->mPaintFg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
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vgSetParameterfv(rpi->mPaintFg, VG_PAINT_COLOR, 4, paintFg);
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vgSetParameteri(rpi->mPaintBg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR);
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vgSetParameterfv(rpi->mPaintBg, VG_PAINT_COLOR, 4, paintBg);
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}
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}
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#endif
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struct sigaction sa;
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sa.sa_handler = rpi_kill;
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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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return rpi;
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}
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static void rpi_free(void *data)
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{
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rpi_t *rpi = (rpi_t*)data;
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vgDestroyImage(rpi->mImage);
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#ifdef HAVE_FREETYPE
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if (rpi->mFontsOn)
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{
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vgDestroyFont(rpi->mFont);
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font_renderer_free(rpi->mFontRenderer);
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vgDestroyPaint(rpi->mPaintFg);
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vgDestroyPaint(rpi->mPaintBg);
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}
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#endif
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// Release EGL resources
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eglMakeCurrent(rpi->mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglDestroySurface(rpi->mDisplay, rpi->mSurface);
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eglDestroyContext(rpi->mDisplay, rpi->mContext);
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eglTerminate(rpi->mDisplay);
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free(rpi);
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}
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#ifdef HAVE_FREETYPE
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static void rpi_render_message(rpi_t *rpi, const char *msg)
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{
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free(rpi->mLastMsg);
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rpi->mLastMsg = strdup(msg);
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if (rpi->mMsgLength)
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{
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while (--rpi->mMsgLength)
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vgClearGlyph(rpi->mFont, rpi->mMsgLength);
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vgClearGlyph(rpi->mFont, 0);
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}
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struct font_output_list out;
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font_renderer_msg(rpi->mFontRenderer, msg, &out);
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struct font_output *head = out.head;
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while (head)
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{
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if (rpi->mMsgLength >= 1024)
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break;
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VGfloat origin[2], escapement[2];
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VGImage img;
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escapement[0] = head->advance_x;
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escapement[1] = head->advance_y;
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origin[0] = -head->char_off_x;
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origin[1] = head->char_off_y;
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img = vgCreateImage(VG_A_8, head->width, head->height, VG_IMAGE_QUALITY_NONANTIALIASED);
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// flip it
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for (unsigned i = 0; i < head->height; i++)
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vgImageSubData(img, head->output + head->pitch * i, head->pitch, VG_A_8, 0, head->height - i - 1, head->width, 1);
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vgSetGlyphToImage(rpi->mFont, rpi->mMsgLength, img, origin, escapement);
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vgDestroyImage(img);
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rpi->mMsgLength++;
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head = head->next;
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}
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font_renderer_free_output(&out);
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for (unsigned i = 0; i < rpi->mMsgLength; i++)
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rpi->mGlyphIndices[i] = i;
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}
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static void rpi_draw_message(rpi_t *rpi, const char *msg)
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{
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if (!rpi->mLastMsg || strcmp(rpi->mLastMsg, msg))
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rpi_render_message(rpi, msg);
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vgSeti(VG_SCISSORING, VG_FALSE);
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vgSeti(VG_IMAGE_MODE, VG_DRAW_IMAGE_STENCIL);
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VGfloat origins[] = {
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rpi->mScreenWidth * g_settings.video.msg_pos_x - 2.0f,
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rpi->mScreenHeight * g_settings.video.msg_pos_y - 2.0f,
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};
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vgSetfv(VG_GLYPH_ORIGIN, 2, origins);
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vgSetPaint(rpi->mPaintBg, VG_FILL_PATH);
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vgDrawGlyphs(rpi->mFont, rpi->mMsgLength, rpi->mGlyphIndices, NULL, NULL, VG_FILL_PATH, VG_TRUE);
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origins[0] += 2.0f;
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origins[1] += 2.0f;
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vgSetfv(VG_GLYPH_ORIGIN, 2, origins);
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vgSetPaint(rpi->mPaintFg, VG_FILL_PATH);
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vgDrawGlyphs(rpi->mFont, rpi->mMsgLength, rpi->mGlyphIndices, NULL, NULL, VG_FILL_PATH, VG_TRUE);
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vgSeti(VG_SCISSORING, VG_TRUE);
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vgSeti(VG_IMAGE_MODE, VG_DRAW_IMAGE_NORMAL);
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}
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#endif
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static void rpi_calculate_quad(rpi_t *rpi)
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{
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// set viewport for aspect ratio, taken from the OpenGL driver
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if (rpi->mKeepAspect)
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{
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float desired_aspect = g_settings.video.aspect_ratio;
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// If the aspect ratios of screen and desired aspect ratio are sufficiently equal (floating point stuff),
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// assume they are actually equal.
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if (fabs(rpi->mScreenAspect - desired_aspect) < 0.0001)
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{
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rpi->x1 = 0;
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rpi->y1 = 0;
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rpi->x2 = rpi->mScreenWidth;
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rpi->y2 = rpi->mScreenHeight;
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}
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else if (rpi->mScreenAspect > desired_aspect)
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{
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float delta = (desired_aspect / rpi->mScreenAspect - 1.0) / 2.0 + 0.5;
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rpi->x1 = rpi->mScreenWidth * (0.5 - delta);
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rpi->y1 = 0;
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rpi->x2 = 2.0 * rpi->mScreenWidth * delta + rpi->x1;
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rpi->y2 = rpi->mScreenHeight + rpi->y1;
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}
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else
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{
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float delta = (rpi->mScreenAspect / desired_aspect - 1.0) / 2.0 + 0.5;
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rpi->x1 = 0;
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rpi->y1 = rpi->mScreenHeight * (0.5 - delta);
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rpi->x2 = rpi->mScreenWidth + rpi->x1;
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rpi->y2 = 2.0 * rpi->mScreenHeight * delta + rpi->y1;
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}
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}
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else
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{
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rpi->x1 = 0;
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rpi->y1 = 0;
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rpi->x2 = rpi->mScreenWidth;
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rpi->y2 = rpi->mScreenHeight;
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}
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rpi->scissor[0] = rpi->x1;
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rpi->scissor[1] = rpi->y1;
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rpi->scissor[2] = rpi->x2 - rpi->x1;
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rpi->scissor[3] = rpi->y2 - rpi->y1;
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vgSetiv(VG_SCISSOR_RECTS, 4, rpi->scissor);
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}
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static bool rpi_frame(void *data, const void *frame, unsigned width, unsigned height, unsigned pitch, const char *msg)
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{
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rpi_t *rpi = (rpi_t*)data;
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if (width != rpi->mRenderWidth || height != rpi->mRenderHeight)
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{
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rpi->mRenderWidth = width;
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rpi->mRenderHeight = height;
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rpi_calculate_quad(rpi);
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vguComputeWarpQuadToQuad(
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rpi->x1, rpi->y1, rpi->x2, rpi->y1, rpi->x2, rpi->y2, rpi->x1, rpi->y2,
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// needs to be flipped, Khronos loves their bottom-left origin
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0, height, width, height, width, 0, 0, 0,
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rpi->mTransformMatrix);
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vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE);
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vgLoadMatrix(rpi->mTransformMatrix);
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}
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vgSeti(VG_SCISSORING, VG_FALSE);
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vgClear(0, 0, rpi->mScreenWidth, rpi->mScreenHeight);
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vgSeti(VG_SCISSORING, VG_TRUE);
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vgImageSubData(rpi->mImage, frame, pitch, rpi->mTexType, 0, 0, width, height);
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vgDrawImage(rpi->mImage);
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#ifdef HAVE_FREETYPE
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if (msg && rpi->mFontsOn)
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rpi_draw_message(rpi, msg);
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#else
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(void)msg;
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#endif
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eglSwapBuffers(rpi->mDisplay, rpi->mSurface);
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return true;
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}
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static bool rpi_alive(void *data)
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{
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(void)data;
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return !rpi_shutdown;
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}
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static bool rpi_focus(void *data)
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{
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(void)data;
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return true;
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}
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const video_driver_t video_rpi = {
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rpi_init,
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rpi_frame,
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rpi_set_nonblock_state,
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rpi_alive,
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rpi_focus,
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NULL,
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rpi_free,
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"rpi"
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};
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