/* RetroArch - A frontend for libretro. * Copyright (C) 2010-2012 - Hans-Kristian Arntzen * Copyright (C) 2012 - Michael Lelli * * RetroArch is free software: you can redistribute it and/or modify it under the terms * of the GNU General Public License as published by the Free Software Found- * ation, either version 3 of the License, or (at your option) any later version. * * RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR * PURPOSE. See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along with RetroArch. * If not, see . */ #include #include #include #include #include #include #include #include "../libretro.h" #include "../general.h" #include "../input/linuxraw_input.h" #include "../driver.h" #ifdef HAVE_FREETYPE #include "fonts/fonts.h" #include "../file.h" #endif typedef struct { EGLDisplay mDisplay; EGLSurface mSurface; EGLContext mContext; uint32_t mScreenWidth; uint32_t mScreenHeight; float mScreenAspect; bool mKeepAspect; unsigned mTextureWidth; unsigned mTextureHeight; unsigned mRenderWidth; unsigned mRenderHeight; unsigned x1, y1, x2, y2; VGImageFormat mTexType; VGImage mImage; VGfloat mTransformMatrix[9]; VGint scissor[4]; #ifdef HAVE_FREETYPE char *mLastMsg; uint32_t mFontHeight; VGFont mFont; font_renderer_t *mFontRenderer; bool mFontsOn; VGuint mMsgLength; VGuint mGlyphIndices[1024]; VGPaint mPaintFg; VGPaint mPaintBg; #endif } rpi_t; static volatile sig_atomic_t rpi_shutdown = 0; static void rpi_kill(int sig) { (void)sig; rpi_shutdown = 1; } static void rpi_set_nonblock_state(void *data, bool state) { rpi_t *rpi = (rpi_t*)data; eglSwapInterval(rpi->mDisplay, state ? 0 : 1); } static void *rpi_init(const video_info_t *video, const input_driver_t **input, void **input_data) { int32_t success; EGLBoolean result; EGLint num_config; rpi_t *rpi = (rpi_t*)calloc(1, sizeof(rpi_t)); *input = NULL; static EGL_DISPMANX_WINDOW_T nativewindow; DISPMANX_ELEMENT_HANDLE_T dispman_element; DISPMANX_DISPLAY_HANDLE_T dispman_display; DISPMANX_UPDATE_HANDLE_T dispman_update; DISPMANX_MODEINFO_T dispman_modeinfo; VC_RECT_T dst_rect; VC_RECT_T src_rect; static const EGLint attribute_list[] = { EGL_RED_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_BLUE_SIZE, 8, EGL_ALPHA_SIZE, 8, EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_NONE }; EGLConfig config; bcm_host_init(); // get an EGL display connection rpi->mDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY); rarch_assert(rpi->mDisplay != EGL_NO_DISPLAY); // initialize the EGL display connection result = eglInitialize(rpi->mDisplay, NULL, NULL); rarch_assert(result != EGL_FALSE); eglBindAPI(EGL_OPENVG_API); // get an appropriate EGL frame buffer configuration result = eglChooseConfig(rpi->mDisplay, attribute_list, &config, 1, &num_config); rarch_assert(result != EGL_FALSE); // create an EGL rendering context rpi->mContext = eglCreateContext(rpi->mDisplay, config, EGL_NO_CONTEXT, NULL); rarch_assert(rpi->mContext != EGL_NO_CONTEXT); // create an EGL window surface success = graphics_get_display_size(0 /* LCD */, &rpi->mScreenWidth, &rpi->mScreenHeight); rarch_assert(success >= 0); dst_rect.x = 0; dst_rect.y = 0; dst_rect.width = rpi->mScreenWidth; dst_rect.height = rpi->mScreenHeight; src_rect.x = 0; src_rect.y = 0; src_rect.width = rpi->mScreenWidth << 16; src_rect.height = rpi->mScreenHeight << 16; dispman_display = vc_dispmanx_display_open(0 /* LCD */); vc_dispmanx_display_get_info(dispman_display, &dispman_modeinfo); dispman_update = vc_dispmanx_update_start(0); dispman_element = vc_dispmanx_element_add(dispman_update, dispman_display, 0 /*layer*/, &dst_rect, 0 /*src*/, &src_rect, DISPMANX_PROTECTION_NONE, 0 /*alpha*/, 0 /*clamp*/, DISPMANX_NO_ROTATE); nativewindow.element = dispman_element; nativewindow.width = rpi->mScreenWidth; nativewindow.height = rpi->mScreenHeight; vc_dispmanx_update_submit_sync(dispman_update); rpi->mSurface = eglCreateWindowSurface(rpi->mDisplay, config, &nativewindow, NULL); rarch_assert(rpi->mSurface != EGL_NO_SURFACE); // connect the context to the surface result = eglMakeCurrent(rpi->mDisplay, rpi->mSurface, rpi->mSurface, rpi->mContext); rarch_assert(result != EGL_FALSE); rpi->mTexType = video->rgb32 ? VG_sABGR_8888 : VG_sARGB_1555; rpi->mKeepAspect = video->force_aspect; // check for SD televisions: they should always be 4:3 if (dispman_modeinfo.width == 720 && (dispman_modeinfo.height == 480 || dispman_modeinfo.height == 576)) rpi->mScreenAspect = 4.0f / 3.0f; else rpi->mScreenAspect = (float)dispman_modeinfo.width / dispman_modeinfo.height; VGfloat clearColor[4] = {0, 0, 0, 1}; vgSetfv(VG_CLEAR_COLOR, 4, clearColor); rpi->mTextureWidth = rpi->mTextureHeight = video->input_scale * RARCH_SCALE_BASE; // We can't use the native format because there's no sXRGB_1555 type and // emulation cores can send 0 in the top bit. We lose some speed on // conversion but I doubt it has any real affect, since we are only drawing // one image at the end of the day. Still keep the alpha channel for ABGR. rpi->mImage = vgCreateImage(video->rgb32 ? VG_sABGR_8888 : VG_sXBGR_8888, rpi->mTextureWidth, rpi->mTextureHeight, video->smooth ? VG_IMAGE_QUALITY_BETTER : VG_IMAGE_QUALITY_NONANTIALIASED); rpi_set_nonblock_state(rpi, !video->vsync); linuxraw_input_t *linuxraw_input = (linuxraw_input_t*)input_linuxraw.init(); if (linuxraw_input) { *input = (const input_driver_t *)&input_linuxraw; *input_data = linuxraw_input; } #ifdef HAVE_FREETYPE if (g_settings.video.font_enable) { rpi->mFont = vgCreateFont(0); rpi->mFontHeight = g_settings.video.font_size * (g_settings.video.font_scale ? (float) rpi->mScreenWidth / 1280.0f : 1.0f); const char *path = g_settings.video.font_path; if (!*path || !path_file_exists(path)) path = font_renderer_get_default_font(); rpi->mFontRenderer = font_renderer_new(path, rpi->mFontHeight); if (rpi->mFont != VG_INVALID_HANDLE && rpi->mFontRenderer) { rpi->mFontsOn = true; rpi->mPaintFg = vgCreatePaint(); rpi->mPaintBg = vgCreatePaint(); VGfloat paintFg[] = { g_settings.video.msg_color_r, g_settings.video.msg_color_g, g_settings.video.msg_color_b, 1.0f }; 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 }; vgSetParameteri(rpi->mPaintFg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR); vgSetParameterfv(rpi->mPaintFg, VG_PAINT_COLOR, 4, paintFg); vgSetParameteri(rpi->mPaintBg, VG_PAINT_TYPE, VG_PAINT_TYPE_COLOR); vgSetParameterfv(rpi->mPaintBg, VG_PAINT_COLOR, 4, paintBg); } } #endif struct sigaction sa; sa.sa_handler = rpi_kill; sa.sa_flags = SA_RESTART; sigemptyset(&sa.sa_mask); sigaction(SIGINT, &sa, NULL); sigaction(SIGTERM, &sa, NULL); return rpi; } static void rpi_free(void *data) { rpi_t *rpi = (rpi_t*)data; vgDestroyImage(rpi->mImage); #ifdef HAVE_FREETYPE if (rpi->mFontsOn) { vgDestroyFont(rpi->mFont); font_renderer_free(rpi->mFontRenderer); vgDestroyPaint(rpi->mPaintFg); vgDestroyPaint(rpi->mPaintBg); } #endif // Release EGL resources eglMakeCurrent(rpi->mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); eglDestroySurface(rpi->mDisplay, rpi->mSurface); eglDestroyContext(rpi->mDisplay, rpi->mContext); eglTerminate(rpi->mDisplay); free(rpi); } #ifdef HAVE_FREETYPE static void rpi_render_message(rpi_t *rpi, const char *msg) { free(rpi->mLastMsg); rpi->mLastMsg = strdup(msg); if (rpi->mMsgLength) { while (--rpi->mMsgLength) vgClearGlyph(rpi->mFont, rpi->mMsgLength); vgClearGlyph(rpi->mFont, 0); } struct font_output_list out; font_renderer_msg(rpi->mFontRenderer, msg, &out); struct font_output *head = out.head; while (head) { if (rpi->mMsgLength >= 1024) break; VGfloat origin[2], escapement[2]; VGImage img; escapement[0] = head->advance_x; escapement[1] = head->advance_y; origin[0] = -head->char_off_x; origin[1] = head->char_off_y; img = vgCreateImage(VG_A_8, head->width, head->height, VG_IMAGE_QUALITY_NONANTIALIASED); // flip it for (unsigned i = 0; i < head->height; i++) vgImageSubData(img, head->output + head->pitch * i, head->pitch, VG_A_8, 0, head->height - i - 1, head->width, 1); vgSetGlyphToImage(rpi->mFont, rpi->mMsgLength, img, origin, escapement); vgDestroyImage(img); rpi->mMsgLength++; head = head->next; } font_renderer_free_output(&out); for (unsigned i = 0; i < rpi->mMsgLength; i++) rpi->mGlyphIndices[i] = i; } static void rpi_draw_message(rpi_t *rpi, const char *msg) { if (!rpi->mLastMsg || strcmp(rpi->mLastMsg, msg)) rpi_render_message(rpi, msg); vgSeti(VG_SCISSORING, VG_FALSE); vgSeti(VG_IMAGE_MODE, VG_DRAW_IMAGE_STENCIL); VGfloat origins[] = { rpi->mScreenWidth * g_settings.video.msg_pos_x - 2.0f, rpi->mScreenHeight * g_settings.video.msg_pos_y - 2.0f, }; vgSetfv(VG_GLYPH_ORIGIN, 2, origins); vgSetPaint(rpi->mPaintBg, VG_FILL_PATH); vgDrawGlyphs(rpi->mFont, rpi->mMsgLength, rpi->mGlyphIndices, NULL, NULL, VG_FILL_PATH, VG_TRUE); origins[0] += 2.0f; origins[1] += 2.0f; vgSetfv(VG_GLYPH_ORIGIN, 2, origins); vgSetPaint(rpi->mPaintFg, VG_FILL_PATH); vgDrawGlyphs(rpi->mFont, rpi->mMsgLength, rpi->mGlyphIndices, NULL, NULL, VG_FILL_PATH, VG_TRUE); vgSeti(VG_SCISSORING, VG_TRUE); vgSeti(VG_IMAGE_MODE, VG_DRAW_IMAGE_NORMAL); } #endif static void rpi_calculate_quad(rpi_t *rpi) { // set viewport for aspect ratio, taken from the OpenGL driver if (rpi->mKeepAspect) { float desired_aspect = g_settings.video.aspect_ratio; // If the aspect ratios of screen and desired aspect ratio are sufficiently equal (floating point stuff), // assume they are actually equal. if (fabs(rpi->mScreenAspect - desired_aspect) < 0.0001) { rpi->x1 = 0; rpi->y1 = 0; rpi->x2 = rpi->mScreenWidth; rpi->y2 = rpi->mScreenHeight; } else if (rpi->mScreenAspect > desired_aspect) { float delta = (desired_aspect / rpi->mScreenAspect - 1.0) / 2.0 + 0.5; rpi->x1 = rpi->mScreenWidth * (0.5 - delta); rpi->y1 = 0; rpi->x2 = 2.0 * rpi->mScreenWidth * delta + rpi->x1; rpi->y2 = rpi->mScreenHeight + rpi->y1; } else { float delta = (rpi->mScreenAspect / desired_aspect - 1.0) / 2.0 + 0.5; rpi->x1 = 0; rpi->y1 = rpi->mScreenHeight * (0.5 - delta); rpi->x2 = rpi->mScreenWidth + rpi->x1; rpi->y2 = 2.0 * rpi->mScreenHeight * delta + rpi->y1; } } else { rpi->x1 = 0; rpi->y1 = 0; rpi->x2 = rpi->mScreenWidth; rpi->y2 = rpi->mScreenHeight; } rpi->scissor[0] = rpi->x1; rpi->scissor[1] = rpi->y1; rpi->scissor[2] = rpi->x2 - rpi->x1; rpi->scissor[3] = rpi->y2 - rpi->y1; vgSetiv(VG_SCISSOR_RECTS, 4, rpi->scissor); } static bool rpi_frame(void *data, const void *frame, unsigned width, unsigned height, unsigned pitch, const char *msg) { rpi_t *rpi = (rpi_t*)data; if (width != rpi->mRenderWidth || height != rpi->mRenderHeight) { rpi->mRenderWidth = width; rpi->mRenderHeight = height; rpi_calculate_quad(rpi); vguComputeWarpQuadToQuad( rpi->x1, rpi->y1, rpi->x2, rpi->y1, rpi->x2, rpi->y2, rpi->x1, rpi->y2, // needs to be flipped, Khronos loves their bottom-left origin 0, height, width, height, width, 0, 0, 0, rpi->mTransformMatrix); vgSeti(VG_MATRIX_MODE, VG_MATRIX_IMAGE_USER_TO_SURFACE); vgLoadMatrix(rpi->mTransformMatrix); } vgSeti(VG_SCISSORING, VG_FALSE); vgClear(0, 0, rpi->mScreenWidth, rpi->mScreenHeight); vgSeti(VG_SCISSORING, VG_TRUE); vgImageSubData(rpi->mImage, frame, pitch, rpi->mTexType, 0, 0, width, height); vgDrawImage(rpi->mImage); #ifdef HAVE_FREETYPE if (msg && rpi->mFontsOn) rpi_draw_message(rpi, msg); #else (void)msg; #endif eglSwapBuffers(rpi->mDisplay, rpi->mSurface); return true; } static bool rpi_alive(void *data) { (void)data; return !rpi_shutdown; } static bool rpi_focus(void *data) { (void)data; return true; } const video_driver_t video_rpi = { rpi_init, rpi_frame, rpi_set_nonblock_state, rpi_alive, rpi_focus, NULL, rpi_free, "rpi" };