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