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 graphic_hw_gl_flushed(scon->dcl.con); 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 void sdl2_gl_scanout_disable(DisplayChangeListener *dcl) 190 { 191 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 192 193 assert(scon->opengl); 194 scon->w = 0; 195 scon->h = 0; 196 sdl2_set_scanout_mode(scon, false); 197 } 198 199 void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, 200 uint32_t backing_id, 201 bool backing_y_0_top, 202 uint32_t backing_width, 203 uint32_t backing_height, 204 uint32_t x, uint32_t y, 205 uint32_t w, uint32_t h) 206 { 207 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 208 209 assert(scon->opengl); 210 scon->x = x; 211 scon->y = y; 212 scon->w = w; 213 scon->h = h; 214 scon->y0_top = backing_y_0_top; 215 216 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 217 218 sdl2_set_scanout_mode(scon, true); 219 egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height, 220 backing_id, false); 221 } 222 223 void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, 224 uint32_t x, uint32_t y, uint32_t w, uint32_t h) 225 { 226 struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); 227 int ww, wh; 228 229 assert(scon->opengl); 230 if (!scon->scanout_mode) { 231 return; 232 } 233 if (!scon->guest_fb.framebuffer) { 234 return; 235 } 236 237 SDL_GL_MakeCurrent(scon->real_window, scon->winctx); 238 239 SDL_GetWindowSize(scon->real_window, &ww, &wh); 240 egl_fb_setup_default(&scon->win_fb, ww, wh); 241 egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); 242 243 SDL_GL_SwapWindow(scon->real_window); 244 graphic_hw_gl_flushed(dcl->con); 245 } 246