1 /* 2 * QEMU SDL display driver -- opengl support 3 * 4 * Copyright (c) 2014 Red Hat 5 * 6 * Authors: 7 * Gerd Hoffmann <kraxel@redhat.com> 8 * 9 * Permission is hereby granted, free of charge, to any person obtaining a copy 10 * of this software and associated documentation files (the "Software"), to deal 11 * in the Software without restriction, including without limitation the rights 12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 13 * copies of the Software, and to permit persons to whom the Software is 14 * furnished to do so, subject to the following conditions: 15 * 16 * The above copyright notice and this permission notice shall be included in 17 * all copies or substantial portions of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 25 * THE SOFTWARE. 26 */ 27 28 #include "qemu-common.h" 29 #include "ui/console.h" 30 #include "ui/input.h" 31 #include "ui/sdl2.h" 32 #include "sysemu/sysemu.h" 33 34 static void sdl2_gl_render_surface(struct sdl2_console *scon) 35 { 36 int ww, wh; 37 38 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 39 40 SDL_GetWindowSize(scon->real_window, &ww, &wh); 41 surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); 42 43 surface_gl_render_texture(scon->gls, scon->surface); 44 SDL_GL_SwapWindow(scon->real_window); 45 } 46 47 void sdl2_gl_update(DisplayChangeListener *dcl, 48 int x, int y, int w, int h) 49 { 50 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 51 52 assert(scon->opengl); 53 54 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 55 surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); 56 scon->updates++; 57 } 58 59 void sdl2_gl_switch(DisplayChangeListener *dcl, 60 DisplaySurface *new_surface) 61 { 62 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 63 DisplaySurface *old_surface = scon->surface; 64 65 assert(scon->opengl); 66 67 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 68 surface_gl_destroy_texture(scon->gls, scon->surface); 69 70 scon->surface = new_surface; 71 72 if (!new_surface) { 73 console_gl_fini_context(scon->gls); 74 scon->gls = NULL; 75 sdl2_window_destroy(scon); 76 return; 77 } 78 79 if (!scon->real_window) { 80 sdl2_window_create(scon); 81 scon->gls = console_gl_init_context(); 82 } else if (old_surface && 83 ((surface_width(old_surface) != surface_width(new_surface)) || 84 (surface_height(old_surface) != surface_height(new_surface)))) { 85 sdl2_window_resize(scon); 86 } 87 88 surface_gl_create_texture(scon->gls, scon->surface); 89 } 90 91 void sdl2_gl_refresh(DisplayChangeListener *dcl) 92 { 93 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 94 95 assert(scon->opengl); 96 97 graphic_hw_update(dcl->con); 98 if (scon->updates && scon->surface) { 99 scon->updates = 0; 100 sdl2_gl_render_surface(scon); 101 } 102 sdl2_poll_events(scon); 103 } 104 105 void sdl2_gl_redraw(struct sdl2_console *scon) 106 { 107 assert(scon->opengl); 108 109 if (scon->surface) { 110 sdl2_gl_render_surface(scon); 111 } 112 } 113