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 33 static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout) 34 { 35 if (scon->scanout_mode == scanout) { 36 return; 37 } 38 39 scon->scanout_mode = scanout; 40 if (!scon->scanout_mode) { 41 egl_fb_destroy(&scon->guest_fb); 42 if (scon->surface) { 43 surface_gl_destroy_texture(scon->gls, scon->surface); 44 surface_gl_create_texture(scon->gls, scon->surface); 45 } 46 } 47 } 48 49 static void sdl2_gl_render_surface(struct sdl2_console *scon) 50 { 51 int ww, wh; 52 53 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 54 sdl2_set_scanout_mode(scon, false); 55 56 SDL_GetWindowSize(scon->real_window, &ww, &wh); 57 surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); 58 59 surface_gl_render_texture(scon->gls, scon->surface); 60 SDL_GL_SwapWindow(scon->real_window); 61 } 62 63 void sdl2_gl_update(DisplayChangeListener *dcl, 64 int x, int y, int w, int h) 65 { 66 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 67 68 assert(scon->opengl); 69 70 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 71 surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); 72 scon->updates++; 73 } 74 75 void sdl2_gl_switch(DisplayChangeListener *dcl, 76 DisplaySurface *new_surface) 77 { 78 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 79 DisplaySurface *old_surface = scon->surface; 80 81 assert(scon->opengl); 82 83 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 84 surface_gl_destroy_texture(scon->gls, scon->surface); 85 86 scon->surface = new_surface; 87 88 if (!new_surface) { 89 qemu_gl_fini_shader(scon->gls); 90 scon->gls = NULL; 91 sdl2_window_destroy(scon); 92 return; 93 } 94 95 if (!scon->real_window) { 96 sdl2_window_create(scon); 97 scon->gls = qemu_gl_init_shader(); 98 } else if (old_surface && 99 ((surface_width(old_surface) != surface_width(new_surface)) || 100 (surface_height(old_surface) != surface_height(new_surface)))) { 101 sdl2_window_resize(scon); 102 } 103 104 surface_gl_create_texture(scon->gls, scon->surface); 105 } 106 107 void sdl2_gl_refresh(DisplayChangeListener *dcl) 108 { 109 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 110 111 assert(scon->opengl); 112 113 graphic_hw_update(dcl->con); 114 if (scon->updates && scon->surface) { 115 scon->updates = 0; 116 sdl2_gl_render_surface(scon); 117 } 118 sdl2_poll_events(scon); 119 } 120 121 void sdl2_gl_redraw(struct sdl2_console *scon) 122 { 123 assert(scon->opengl); 124 125 if (scon->scanout_mode) { 126 /* sdl2_gl_scanout_flush actually only care about 127 * the first argument. */ 128 return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0); 129 } 130 if (scon->surface) { 131 sdl2_gl_render_surface(scon); 132 } 133 } 134 135 QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl, 136 QEMUGLParams *params) 137 { 138 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 139 SDL_GLContext ctx; 140 141 assert(scon->opengl); 142 143 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 144 145 SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1); 146 if (scon->opts->gl == DISPLAYGL_MODE_ON || 147 scon->opts->gl == DISPLAYGL_MODE_CORE) { 148 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 149 SDL_GL_CONTEXT_PROFILE_CORE); 150 } else if (scon->opts->gl == DISPLAYGL_MODE_ES) { 151 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 152 SDL_GL_CONTEXT_PROFILE_ES); 153 } 154 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver); 155 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver); 156 157 ctx = SDL_GL_CreateContext(scon->real_window); 158 159 /* If SDL fail to create a GL context and we use the "on" flag, 160 * then try to fallback to GLES. 161 */ 162 if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) { 163 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 164 SDL_GL_CONTEXT_PROFILE_ES); 165 ctx = SDL_GL_CreateContext(scon->real_window); 166 } 167 return (QEMUGLContext)ctx; 168 } 169 170 void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx) 171 { 172 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 173 174 SDL_GL_DeleteContext(sdlctx); 175 } 176 177 int sdl2_gl_make_context_current(DisplayChangeListener *dcl, 178 QEMUGLContext ctx) 179 { 180 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 181 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 182 183 assert(scon->opengl); 184 185 return SDL_GL_MakeCurrent(scon->real_window, sdlctx); 186 } 187 188 QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl) 189 { 190 SDL_GLContext sdlctx; 191 192 sdlctx = SDL_GL_GetCurrentContext(); 193 return (QEMUGLContext)sdlctx; 194 } 195 196 void sdl2_gl_scanout_disable(DisplayChangeListener *dcl) 197 { 198 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 199 200 assert(scon->opengl); 201 scon->w = 0; 202 scon->h = 0; 203 sdl2_set_scanout_mode(scon, false); 204 } 205 206 void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, 207 uint32_t backing_id, 208 bool backing_y_0_top, 209 uint32_t backing_width, 210 uint32_t backing_height, 211 uint32_t x, uint32_t y, 212 uint32_t w, uint32_t h) 213 { 214 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 215 216 assert(scon->opengl); 217 scon->x = x; 218 scon->y = y; 219 scon->w = w; 220 scon->h = h; 221 scon->y0_top = backing_y_0_top; 222 223 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 224 225 sdl2_set_scanout_mode(scon, true); 226 egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height, 227 backing_id, false); 228 } 229 230 void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, 231 uint32_t x, uint32_t y, uint32_t w, uint32_t h) 232 { 233 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 234 int ww, wh; 235 236 assert(scon->opengl); 237 if (!scon->scanout_mode) { 238 return; 239 } 240 if (!scon->guest_fb.framebuffer) { 241 return; 242 } 243 244 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 245 246 SDL_GetWindowSize(scon->real_window, &ww, &wh); 247 egl_fb_setup_default(&scon->win_fb, ww, wh); 248 egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); 249 250 SDL_GL_SwapWindow(scon->real_window); 251 } 252