| 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/main-loop.h" |
| 30 | #include "qemu/error-report.h" |
| 31 | #include "ui/console.h" |
| 32 | #include "ui/input.h" |
| 33 | #include "ui/sdl2.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 | |
| 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 | if (!scon->real_window) { |
| 72 | return; |
| 73 | } |
| 74 | |
| 75 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 76 | surface_gl_update_texture(scon->gls, scon->surface, x, y, w, h); |
| 77 | scon->updates++; |
| 78 | } |
| 79 | |
| 80 | void sdl2_gl_switch(DisplayChangeListener *dcl, |
| 81 | DisplaySurface *new_surface) |
| 82 | { |
| 83 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 84 | DisplaySurface *old_surface = scon->surface; |
| 85 | |
| 86 | assert(scon->opengl); |
| 87 | |
| 88 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 89 | surface_gl_destroy_texture(scon->gls, scon->surface); |
| 90 | |
| 91 | scon->surface = new_surface; |
| 92 | |
| 93 | if (surface_is_placeholder(new_surface) && qemu_console_get_index(dcl->con)) { |
| 94 | qemu_gl_fini_shader(scon->gls); |
| 95 | scon->gls = NULL; |
| 96 | sdl2_window_destroy(scon); |
| 97 | return; |
| 98 | } |
| 99 | |
| 100 | if (!scon->real_window) { |
| 101 | sdl2_window_create(scon); |
| 102 | scon->gls = qemu_gl_init_shader(); |
| 103 | } else if (old_surface && |
| 104 | ((surface_width(old_surface) != surface_width(new_surface)) || |
| 105 | (surface_height(old_surface) != surface_height(new_surface)))) { |
| 106 | sdl2_window_resize(scon); |
| 107 | } |
| 108 | |
| 109 | surface_gl_create_texture(scon->gls, scon->surface); |
| 110 | } |
| 111 | |
| 112 | void sdl2_gl_refresh(DisplayChangeListener *dcl) |
| 113 | { |
| 114 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 115 | |
| 116 | assert(scon->opengl); |
| 117 | |
| 118 | qemu_console_hw_update(dcl->con); |
| 119 | if (scon->updates && scon->real_window) { |
| 120 | scon->updates = 0; |
| 121 | sdl2_gl_render_surface(scon); |
| 122 | } |
| 123 | sdl2_poll_events(scon); |
| 124 | } |
| 125 | |
| 126 | void sdl2_gl_redraw(struct sdl2_console *scon) |
| 127 | { |
| 128 | assert(scon->opengl); |
| 129 | |
| 130 | if (scon->scanout_mode) { |
| 131 | /* sdl2_gl_scanout_flush actually only care about |
| 132 | * the first argument. */ |
| 133 | return sdl2_gl_scanout_flush(&scon->dcl, 0, 0, 0, 0); |
| 134 | } |
| 135 | if (scon->surface) { |
| 136 | sdl2_gl_render_surface(scon); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | QEMUGLContext sdl2_gl_create_context(DisplayGLCtx *dgc, |
| 141 | QEMUGLParams *params) |
| 142 | { |
| 143 | struct sdl2_console *scon = container_of(dgc, struct sdl2_console, dgc); |
| 144 | SDL_GLContext ctx, current_ctx; |
| 145 | |
| 146 | assert(scon->opengl); |
| 147 | |
| 148 | current_ctx = SDL_GL_GetCurrentContext(); |
| 149 | |
| 150 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 151 | |
| 152 | SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1); |
| 153 | if (scon->opts->gl == DISPLAY_GL_MODE_ON || |
| 154 | scon->opts->gl == DISPLAY_GL_MODE_CORE) { |
| 155 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, |
| 156 | SDL_GL_CONTEXT_PROFILE_CORE); |
| 157 | } else if (scon->opts->gl == DISPLAY_GL_MODE_ES) { |
| 158 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, |
| 159 | SDL_GL_CONTEXT_PROFILE_ES); |
| 160 | } |
| 161 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, params->major_ver); |
| 162 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, params->minor_ver); |
| 163 | |
| 164 | ctx = SDL_GL_CreateContext(scon->real_window); |
| 165 | |
| 166 | /* If SDL fail to create a GL context and we use the "on" flag, |
| 167 | * then try to fallback to GLES. |
| 168 | */ |
| 169 | if (!ctx && scon->opts->gl == DISPLAY_GL_MODE_ON) { |
| 170 | SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, |
| 171 | SDL_GL_CONTEXT_PROFILE_ES); |
| 172 | ctx = SDL_GL_CreateContext(scon->real_window); |
| 173 | } |
| 174 | |
| 175 | SDL_GL_MakeCurrent(scon->real_window, current_ctx); |
| 176 | |
| 177 | return (QEMUGLContext)ctx; |
| 178 | } |
| 179 | |
| 180 | void sdl2_gl_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx) |
| 181 | { |
| 182 | SDL_GLContext sdlctx = (SDL_GLContext)ctx; |
| 183 | |
| 184 | SDL_GL_DeleteContext(sdlctx); |
| 185 | } |
| 186 | |
| 187 | int sdl2_gl_make_context_current(DisplayGLCtx *dgc, |
| 188 | QEMUGLContext ctx) |
| 189 | { |
| 190 | struct sdl2_console *scon = container_of(dgc, struct sdl2_console, dgc); |
| 191 | SDL_GLContext sdlctx = (SDL_GLContext)ctx; |
| 192 | |
| 193 | assert(scon->opengl); |
| 194 | |
| 195 | return SDL_GL_MakeCurrent(scon->real_window, sdlctx); |
| 196 | } |
| 197 | |
| 198 | void sdl2_gl_scanout_disable(DisplayChangeListener *dcl) |
| 199 | { |
| 200 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 201 | |
| 202 | assert(scon->opengl); |
| 203 | scon->w = 0; |
| 204 | scon->h = 0; |
| 205 | sdl2_set_scanout_mode(scon, false); |
| 206 | } |
| 207 | |
| 208 | void sdl2_gl_scanout_texture(DisplayChangeListener *dcl, |
| 209 | uint32_t backing_id, |
| 210 | bool backing_y_0_top, |
| 211 | uint32_t backing_width, |
| 212 | uint32_t backing_height, |
| 213 | uint32_t x, uint32_t y, |
| 214 | uint32_t w, uint32_t h, |
| 215 | void *d3d_tex2d) |
| 216 | { |
| 217 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 218 | |
| 219 | assert(scon->opengl); |
| 220 | scon->x = x; |
| 221 | scon->y = y; |
| 222 | scon->w = w; |
| 223 | scon->h = h; |
| 224 | scon->y0_top = backing_y_0_top; |
| 225 | |
| 226 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 227 | |
| 228 | sdl2_set_scanout_mode(scon, true); |
| 229 | egl_fb_setup_for_tex(&scon->guest_fb, backing_width, backing_height, |
| 230 | backing_id, false); |
| 231 | } |
| 232 | |
| 233 | void sdl2_gl_scanout_flush(DisplayChangeListener *dcl, |
| 234 | uint32_t x, uint32_t y, uint32_t w, uint32_t h) |
| 235 | { |
| 236 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 237 | int ww, wh; |
| 238 | |
| 239 | assert(scon->opengl); |
| 240 | if (!scon->scanout_mode) { |
| 241 | return; |
| 242 | } |
| 243 | if (!scon->guest_fb.framebuffer) { |
| 244 | return; |
| 245 | } |
| 246 | |
| 247 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 248 | |
| 249 | SDL_GetWindowSize(scon->real_window, &ww, &wh); |
| 250 | egl_fb_setup_default(&scon->win_fb, ww, wh, 0, 0); |
| 251 | egl_fb_blit(&scon->win_fb, &scon->guest_fb, !scon->y0_top); |
| 252 | |
| 253 | SDL_GL_SwapWindow(scon->real_window); |
| 254 | } |
| 255 | |
| 256 | #ifdef CONFIG_GBM |
| 257 | void sdl2_gl_scanout_dmabuf(DisplayChangeListener *dcl, |
| 258 | QemuDmaBuf *dmabuf) |
| 259 | { |
| 260 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 261 | const int *fds; |
| 262 | |
| 263 | assert(scon->opengl); |
| 264 | SDL_GL_MakeCurrent(scon->real_window, scon->winctx); |
| 265 | |
| 266 | egl_dmabuf_import_texture(dmabuf); |
| 267 | if (!qemu_dmabuf_get_texture(dmabuf)) { |
| 268 | fds = qemu_dmabuf_get_fds(dmabuf, NULL); |
| 269 | error_report("%s: failed fd=%d", __func__, fds ? fds[0] : -1); |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | sdl2_gl_scanout_texture(dcl, qemu_dmabuf_get_texture(dmabuf), false, |
| 274 | qemu_dmabuf_get_width(dmabuf), |
| 275 | qemu_dmabuf_get_height(dmabuf), |
| 276 | 0, 0, |
| 277 | qemu_dmabuf_get_width(dmabuf), |
| 278 | qemu_dmabuf_get_height(dmabuf), |
| 279 | NULL); |
| 280 | |
| 281 | if (qemu_dmabuf_get_allow_fences(dmabuf)) { |
| 282 | scon->guest_fb.dmabuf = dmabuf; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | void sdl2_gl_release_dmabuf(DisplayChangeListener *dcl, |
| 287 | QemuDmaBuf *dmabuf) |
| 288 | { |
| 289 | egl_dmabuf_release_texture(dmabuf); |
| 290 | } |
| 291 | |
| 292 | bool sdl2_gl_has_dmabuf(DisplayChangeListener *dcl) |
| 293 | { |
| 294 | struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl); |
| 295 | |
| 296 | return scon->has_dmabuf; |
| 297 | } |
| 298 | #endif |
| 299 | |
| 300 | void sdl2_gl_console_init(struct sdl2_console *scon) |
| 301 | { |
| 302 | bool hidden = scon->hidden; |
| 303 | |
| 304 | scon->hidden = true; |
| 305 | scon->surface = qemu_create_displaysurface(1, 1); |
| 306 | sdl2_window_create(scon); |
| 307 | |
| 308 | /* |
| 309 | * QEMU checks whether console supports dma-buf before switching |
| 310 | * to the console. To break this chicken-egg problem we pre-check |
| 311 | * dma-buf availability beforehand using a dummy SDL window. |
| 312 | */ |
| 313 | scon->has_dmabuf = qemu_egl_has_dmabuf(); |
| 314 | |
| 315 | sdl2_window_destroy(scon); |
| 316 | qemu_free_displaysurface(scon->surface); |
| 317 | |
| 318 | scon->surface = NULL; |
| 319 | scon->hidden = hidden; |
| 320 | } |