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 "qemu-common.h" 30 #include "ui/console.h" 31 #include "ui/input.h" 32 #include "ui/sdl2.h" 33 #include "sysemu/sysemu.h" 34 35 static void sdl2_set_scanout_mode(struct sdl2_console *scon, bool scanout) 36 { 37 if (scon->scanout_mode == scanout) { 38 return; 39 } 40 41 scon->scanout_mode = scanout; 42 if (!scon->scanout_mode) { 43 egl_fb_destroy(&scon->guest_fb); 44 if (scon->surface) { 45 surface_gl_destroy_texture(scon->gls, scon->surface); 46 surface_gl_create_texture(scon->gls, scon->surface); 47 } 48 } 49 } 50 51 static void sdl2_gl_render_surface(struct sdl2_console *scon) 52 { 53 int ww, wh; 54 55 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 56 sdl2_set_scanout_mode(scon, false); 57 58 SDL_GetWindowSize(scon->real_window, &ww, &wh); 59 surface_gl_setup_viewport(scon->gls, scon->surface, ww, wh); 60 61 surface_gl_render_texture(scon->gls, scon->surface); 62 SDL_GL_SwapWindow(scon->real_window); 63 } 64 65 void sdl2_gl_update(DisplayChangeListener *dcl, 66 int x, int y, int w, int h) 67 { 68 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 69 70 assert(scon->opengl); 71 72 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 73 surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); 74 scon->updates++; 75 } 76 77 void sdl2_gl_switch(DisplayChangeListener *dcl, 78 DisplaySurface *new_surface) 79 { 80 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 81 DisplaySurface *old_surface = scon->surface; 82 83 assert(scon->opengl); 84 85 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 86 surface_gl_destroy_texture(scon->gls, scon->surface); 87 88 scon->surface = new_surface; 89 90 if (!new_surface) { 91 qemu_gl_fini_shader(scon->gls); 92 scon->gls = NULL; 93 sdl2_window_destroy(scon); 94 return; 95 } 96 97 if (!scon->real_window) { 98 sdl2_window_create(scon); 99 scon->gls = qemu_gl_init_shader(); 100 } else if (old_surface && 101 ((surface_width(old_surface) != surface_width(new_surface)) || 102 (surface_height(old_surface) != surface_height(new_surface)))) { 103 sdl2_window_resize(scon); 104 } 105 106 surface_gl_create_texture(scon->gls, scon->surface); 107 } 108 109 void sdl2_gl_refresh(DisplayChangeListener *dcl) 110 { 111 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 112 113 assert(scon->opengl); 114 115 graphic_hw_update(dcl->con); 116 if (scon->updates && scon->surface) { 117 scon->updates = 0; 118 sdl2_gl_render_surface(scon); 119 } 120 sdl2_poll_events(scon); 121 } 122 123 void sdl2_gl_redraw(struct sdl2_console *scon) 124 { 125 assert(scon->opengl); 126 127 if (scon->surface) { 128 sdl2_gl_render_surface(scon); 129 } 130 } 131 132 QEMUGLContext sdl2_gl_create_context(DisplayChangeListener *dcl, 133 QEMUGLParams *params) 134 { 135 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 136 SDL_GLContext ctx; 137 138 assert(scon->opengl); 139 140 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 141 142 SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1); 143 if (scon->opts->gl == DISPLAYGL_MODE_ON || 144 scon->opts->gl == DISPLAYGL_MODE_CORE) { 145 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 146 SDL_GL_CONTEXT_PROFILE_CORE); 147 } else if (scon->opts->gl == DISPLAYGL_MODE_ES) { 148 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 149 SDL_GL_CONTEXT_PROFILE_ES); 150 } 151 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver); 152 SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver); 153 154 ctx = SDL_GL_CreateContext(scon->real_window); 155 156 /* If SDL fail to create a GL context and we use the "on" flag, 157 * then try to fallback to GLES. 158 */ 159 if (!ctx && scon->opts->gl == DISPLAYGL_MODE_ON) { 160 SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, 161 SDL_GL_CONTEXT_PROFILE_ES); 162 ctx = SDL_GL_CreateContext(scon->real_window); 163 } 164 return (QEMUGLContext)ctx; 165 } 166 167 void sdl2_gl_destroy_context(DisplayChangeListener *dcl, QEMUGLContext ctx) 168 { 169 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 170 171 SDL_GL_DeleteContext(sdlctx); 172 } 173 174 int sdl2_gl_make_context_current(DisplayChangeListener *dcl, 175 QEMUGLContext ctx) 176 { 177 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 178 SDL_GLContext sdlctx = (SDL_GLContext)ctx; 179 180 assert(scon->opengl); 181 182 return SDL_GL_MakeCurrent(scon->real_window, sdlctx); 183 } 184 185 QEMUGLContext sdl2_gl_get_current_context(DisplayChangeListener *dcl) 186 { 187 SDL_GLContext sdlctx; 188 189 sdlctx = SDL_GL_GetCurrentContext(); 190 return (QEMUGLContext)sdlctx; 191 } 192 193 void sdl2_gl_scanout_disable(DisplayChangeListener *dcl) 194 { 195 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 196 197 assert(scon->opengl); 198 scon->w = 0; 199 scon->h = 0; 200 sdl2_set_scanout_mode(scon, false); 201 } 202 203 void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, 204 uint32_t backing_id, 205 bool backing_y_0_top, 206 uint32_t backing_width, 207 uint32_t backing_height, 208 uint32_t x, uint32_t y, 209 uint32_t w, uint32_t h) 210 { 211 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 212 213 assert(scon->opengl); 214 scon->x = x; 215 scon->y = y; 216 scon->w = w; 217 scon->h = h; 218 scon->y0_top = backing_y_0_top; 219 220 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 221 222 sdl2_set_scanout_mode(scon, true); 223 egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height, 224 backing_id, false); 225 } 226 227 void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, 228 uint32_t x, uint32_t y, uint32_t w, uint32_t h) 229 { 230 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 231 int ww, wh; 232 233 assert(scon->opengl); 234 if (!scon->scanout_mode) { 235 return; 236 } 237 if (!scon->guest_fb.framebuffer) { 238 return; 239 } 240 241 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 242 243 SDL_GetWindowSize(scon->real_window, &ww, &wh); 244 egl_fb_setup_default(&scon->win_fb, ww, wh); 245 egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); 246 247 SDL_GL_SwapWindow(scon->real_window); 248 } 249