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/osdep.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_set_scanout_mode(struct sdl2_console *scon, bool scanout) 35 { 36 if (scon->scanout_mode == scanout) { 37 return; 38 } 39 40 scon->scanout_mode = scanout; 41 if (!scon->scanout_mode) { 42 egl_fb_destroy(&scon->guest_fb); 43 if (scon->surface) { 44 surface_gl_destroy_texture(scon->gls, scon->surface); 45 surface_gl_create_texture(scon->gls, scon->surface); 46 } 47 } 48 } 49 50 static void sdl2_gl_render_surface(struct sdl2_console *scon) 51 { 52 int ww, wh; 53 54 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 55 sdl2_set_scanout_mode(scon, false); 56 57 SDL_GetWindowSize(scon->real_window, &ww, &wh); 58 surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); 59 60 surface_gl_render_texture(scon->gls, scon->surface); 61 SDL_GL_SwapWindow(scon->real_window); 62 } 63 64 void sdl2_gl_update(DisplayChangeListener *dcl, 65 int x, int y, int w, int h) 66 { 67 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 68 69 assert(scon->opengl); 70 71 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 72 surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); 73 scon->updates++; 74 } 75 76 void sdl2_gl_switch(DisplayChangeListener *dcl, 77 DisplaySurface *new_surface) 78 { 79 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 80 DisplaySurface *old_surface = scon->surface; 81 82 assert(scon->opengl); 83 84 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 85 surface_gl_destroy_texture(scon->gls, scon->surface); 86 87 scon->surface = new_surface; 88 89 if (!new_surface) { 90 qemu_gl_fini_shader(scon->gls); 91 scon->gls = NULL; 92 sdl2_window_destroy(scon); 93 return; 94 } 95 96 if (!scon->real_window) { 97 sdl2_window_create(scon); 98 scon->gls = qemu_gl_init_shader(); 99 } else if (old_surface && 100 ((surface_width(old_surface) != surface_width(new_surface)) || 101 (surface_height(old_surface) != surface_height(new_surface)))) { 102 sdl2_window_resize(scon); 103 } 104 105 surface_gl_create_texture(scon->gls, scon->surface); 106 } 107 108 void sdl2_gl_refresh(DisplayChangeListener *dcl) 109 { 110 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 111 112 assert(scon->opengl); 113 114 graphic_hw_update(dcl->con); 115 if (scon->updates && scon->surface) { 116 scon->updates = 0; 117 sdl2_gl_render_surface(scon); 118 } 119 sdl2_poll_events(scon); 120 } 121 122 void sdl2_gl_redraw(struct sdl2_console *scon) 123 { 124 assert(scon->opengl); 125 126 if (scon->scanout_mode) { 127 /* sdl2_gl_scanout_flush actually only care about 128 * the first argument. */ 129 return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0); 130 } 131 if (scon->surface) { 132 sdl2_gl_render_surface(scon); 133 } 134 } 135 136 QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl, 137 QEMUGLParams *params) 138 { 139 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 140 SDL_GLContext ctx; 141 142 assert(scon->opengl); 143 144 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 145 146 SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1); 147 if (scon->opts->gl == DISPLAYGL_MODE_ON || 148 scon->opts->gl == DISPLAYGL_MODE_CORE) { 149 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 150 SDL_GL_CONTEXT_PROFILE_CORE); 151 } else if (scon->opts->gl == DISPLAYGL_MODE_ES) { 152 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 153 SDL_GL_CONTEXT_PROFILE_ES); 154 } 155 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver); 156 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver); 157 158 ctx = SDL_GL_CreateContext(scon->real_window); 159 160 /* If SDL fail to create a GL context and we use the "on" flag, 161 * then try to fallback to GLES. 162 */ 163 if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) { 164 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 165 SDL_GL_CONTEXT_PROFILE_ES); 166 ctx = SDL_GL_CreateContext(scon->real_window); 167 } 168 return (QEMUGLContext)ctx; 169 } 170 171 void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx) 172 { 173 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 174 175 SDL_GL_DeleteContext(sdlctx); 176 } 177 178 int sdl2_gl_make_context_current(DisplayChangeListener *dcl, 179 QEMUGLContext ctx) 180 { 181 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 182 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 183 184 assert(scon->opengl); 185 186 return SDL_GL_MakeCurrent(scon->real_window, sdlctx); 187 } 188 189 QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl) 190 { 191 SDL_GLContext sdlctx; 192 193 sdlctx = SDL_GL_GetCurrentContext(); 194 return (QEMUGLContext)sdlctx; 195 } 196 197 void sdl2_gl_scanout_disable(DisplayChangeListener *dcl) 198 { 199 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 200 201 assert(scon->opengl); 202 scon->w = 0; 203 scon->h = 0; 204 sdl2_set_scanout_mode(scon, false); 205 } 206 207 void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, 208 uint32_t backing_id, 209 bool backing_y_0_top, 210 uint32_t backing_width, 211 uint32_t backing_height, 212 uint32_t x, uint32_t y, 213 uint32_t w, uint32_t h) 214 { 215 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 216 217 assert(scon->opengl); 218 scon->x = x; 219 scon->y = y; 220 scon->w = w; 221 scon->h = h; 222 scon->y0_top = backing_y_0_top; 223 224 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 225 226 sdl2_set_scanout_mode(scon, true); 227 egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height, 228 backing_id, false); 229 } 230 231 void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, 232 uint32_t x, uint32_t y, uint32_t w, uint32_t h) 233 { 234 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 235 int ww, wh; 236 237 assert(scon->opengl); 238 if (!scon->scanout_mode) { 239 return; 240 } 241 if (!scon->guest_fb.framebuffer) { 242 return; 243 } 244 245 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 246 247 SDL_GetWindowSize(scon->real_window, &ww, &wh); 248 egl_fb_setup_default(&scon->win_fb, ww, wh); 249 egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); 250 251 SDL_GL_SwapWindow(scon->real_window); 252 } 253