1 /* 2 * GTK UI -- glarea opengl code. 3 * 4 * Requires 3.16+ (GtkGLArea widget). 5 * 6 * This work is licensed under the terms of the GNU GPL, version 2 or later. 7 * See the COPYING file in the top-level directory. 8 */ 9 10 #include "qemu/osdep.h" 11 #include "qemu/main-loop.h" 12 13 #include "trace.h" 14 15 #include "ui/console.h" 16 #include "ui/gtk.h" 17 #include "ui/egl-helpers.h" 18 19 #include "sysemu/sysemu.h" 20 21 static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout) 22 { 23 if (vc->gfx.scanout_mode == scanout) { 24 return; 25 } 26 27 vc->gfx.scanout_mode = scanout; 28 if (!vc->gfx.scanout_mode) { 29 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 30 egl_fb_destroy(&vc->gfx.guest_fb); 31 if (vc->gfx.surface) { 32 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds); 33 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds); 34 } 35 } 36 } 37 38 /** DisplayState Callbacks (opengl version) **/ 39 40 void gd_gl_area_draw(VirtualConsole *vc) 41 { 42 #ifdef CONFIG_GBM 43 QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf; 44 #endif 45 int ww, wh, ws, y1, y2; 46 47 if (!vc->gfx.gls) { 48 return; 49 } 50 51 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 52 ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area)); 53 ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws; 54 wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws; 55 56 if (vc->gfx.scanout_mode) { 57 if (!vc->gfx.guest_fb.framebuffer) { 58 return; 59 } 60 61 #ifdef CONFIG_GBM 62 if (dmabuf) { 63 if (!qemu_dmabuf_get_draw_submitted(dmabuf)) { 64 return; 65 } else { 66 qemu_dmabuf_set_draw_submitted(dmabuf, false); 67 } 68 } 69 #endif 70 71 glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer); 72 /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */ 73 74 glViewport(0, 0, ww, wh); 75 y1 = vc->gfx.y0_top ? 0 : vc->gfx.h; 76 y2 = vc->gfx.y0_top ? vc->gfx.h : 0; 77 glBlitFramebuffer(0, y1, vc->gfx.w, y2, 78 0, 0, ww, wh, 79 GL_COLOR_BUFFER_BIT, GL_NEAREST); 80 #ifdef CONFIG_GBM 81 if (dmabuf) { 82 egl_dmabuf_create_sync(dmabuf); 83 } 84 #endif 85 glFlush(); 86 #ifdef CONFIG_GBM 87 if (dmabuf) { 88 int fence_fd; 89 egl_dmabuf_create_fence(dmabuf); 90 fence_fd = qemu_dmabuf_get_fence_fd(dmabuf); 91 if (fence_fd >= 0) { 92 qemu_set_fd_handler(fence_fd, gd_hw_gl_flushed, NULL, vc); 93 return; 94 } 95 graphic_hw_gl_block(vc->gfx.dcl.con, false); 96 } 97 #endif 98 } else { 99 if (!vc->gfx.ds) { 100 return; 101 } 102 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 103 104 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh); 105 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds); 106 } 107 } 108 109 void gd_gl_area_update(DisplayChangeListener *dcl, 110 int x, int y, int w, int h) 111 { 112 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 113 114 if (!vc->gfx.gls || !vc->gfx.ds) { 115 return; 116 } 117 118 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 119 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h); 120 vc->gfx.glupdates++; 121 gdk_gl_context_clear_current(); 122 } 123 124 void gd_gl_area_refresh(DisplayChangeListener *dcl) 125 { 126 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 127 128 gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area); 129 130 if (vc->gfx.guest_fb.dmabuf && 131 qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) { 132 gd_gl_area_draw(vc); 133 return; 134 } 135 136 if (!vc->gfx.gls) { 137 if (!gtk_widget_get_realized(vc->gfx.drawing_area)) { 138 return; 139 } 140 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 141 vc->gfx.gls = qemu_gl_init_shader(); 142 if (vc->gfx.ds) { 143 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds); 144 } 145 } 146 147 graphic_hw_update(dcl->con); 148 149 if (vc->gfx.glupdates) { 150 vc->gfx.glupdates = 0; 151 gtk_gl_area_set_scanout_mode(vc, false); 152 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); 153 } 154 } 155 156 void gd_gl_area_switch(DisplayChangeListener *dcl, 157 DisplaySurface *surface) 158 { 159 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 160 bool resized = true; 161 162 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface)); 163 164 if (vc->gfx.ds && 165 surface_width(vc->gfx.ds) == surface_width(surface) && 166 surface_height(vc->gfx.ds) == surface_height(surface)) { 167 resized = false; 168 } 169 170 if (vc->gfx.gls) { 171 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 172 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds); 173 surface_gl_create_texture(vc->gfx.gls, surface); 174 } 175 vc->gfx.ds = surface; 176 177 if (resized) { 178 gd_update_windowsize(vc); 179 } 180 } 181 182 static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params) 183 { 184 if (major > params->major_ver) { 185 return 1; 186 } 187 if (major < params->major_ver) { 188 return -1; 189 } 190 if (minor > params->minor_ver) { 191 return 1; 192 } 193 if (minor < params->minor_ver) { 194 return -1; 195 } 196 return 0; 197 } 198 199 QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc, 200 QEMUGLParams *params) 201 { 202 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc); 203 GdkWindow *window; 204 GdkGLContext *ctx; 205 GError *err = NULL; 206 int major, minor; 207 208 window = gtk_widget_get_window(vc->gfx.drawing_area); 209 ctx = gdk_window_create_gl_context(window, &err); 210 if (err) { 211 g_printerr("Create gdk gl context failed: %s\n", err->message); 212 g_error_free(err); 213 return NULL; 214 } 215 gdk_gl_context_set_required_version(ctx, 216 params->major_ver, 217 params->minor_ver); 218 gdk_gl_context_realize(ctx, &err); 219 if (err) { 220 g_printerr("Realize gdk gl context failed: %s\n", err->message); 221 g_error_free(err); 222 g_clear_object(&ctx); 223 return NULL; 224 } 225 226 gdk_gl_context_make_current(ctx); 227 gdk_gl_context_get_version(ctx, &major, &minor); 228 gdk_gl_context_clear_current(); 229 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 230 231 if (gd_cmp_gl_context_version(major, minor, params) == -1) { 232 /* created ctx version < requested version */ 233 g_clear_object(&ctx); 234 } 235 236 trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver); 237 return ctx; 238 } 239 240 void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx) 241 { 242 GdkGLContext *current_ctx = gdk_gl_context_get_current(); 243 244 trace_gd_gl_area_destroy_context(ctx, current_ctx); 245 if (ctx == current_ctx) { 246 gdk_gl_context_clear_current(); 247 } 248 g_clear_object(&ctx); 249 } 250 251 void gd_gl_area_scanout_texture(DisplayChangeListener *dcl, 252 uint32_t backing_id, 253 bool backing_y_0_top, 254 uint32_t backing_width, 255 uint32_t backing_height, 256 uint32_t x, uint32_t y, 257 uint32_t w, uint32_t h, 258 void *d3d_tex2d) 259 { 260 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 261 262 vc->gfx.x = x; 263 vc->gfx.y = y; 264 vc->gfx.w = w; 265 vc->gfx.h = h; 266 vc->gfx.y0_top = backing_y_0_top; 267 268 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 269 270 if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) { 271 gtk_gl_area_set_scanout_mode(vc, false); 272 return; 273 } 274 275 gtk_gl_area_set_scanout_mode(vc, true); 276 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height, 277 backing_id, false); 278 } 279 280 void gd_gl_area_scanout_disable(DisplayChangeListener *dcl) 281 { 282 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 283 284 gtk_gl_area_set_scanout_mode(vc, false); 285 } 286 287 void gd_gl_area_scanout_flush(DisplayChangeListener *dcl, 288 uint32_t x, uint32_t y, uint32_t w, uint32_t h) 289 { 290 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 291 292 if (vc->gfx.guest_fb.dmabuf && 293 !qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) { 294 graphic_hw_gl_block(vc->gfx.dcl.con, true); 295 qemu_dmabuf_set_draw_submitted(vc->gfx.guest_fb.dmabuf, true); 296 gtk_gl_area_set_scanout_mode(vc, true); 297 } 298 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area)); 299 } 300 301 void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl, 302 QemuDmaBuf *dmabuf) 303 { 304 #ifdef CONFIG_GBM 305 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); 306 uint32_t x, y, width, height, backing_width, backing_height, texture; 307 bool y0_top; 308 309 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area)); 310 egl_dmabuf_import_texture(dmabuf); 311 texture = qemu_dmabuf_get_texture(dmabuf); 312 if (!texture) { 313 return; 314 } 315 316 x = qemu_dmabuf_get_x(dmabuf); 317 y = qemu_dmabuf_get_y(dmabuf); 318 width = qemu_dmabuf_get_width(dmabuf); 319 height = qemu_dmabuf_get_height(dmabuf); 320 backing_width = qemu_dmabuf_get_backing_width(dmabuf); 321 backing_height = qemu_dmabuf_get_backing_height(dmabuf); 322 y0_top = qemu_dmabuf_get_y0_top(dmabuf); 323 324 gd_gl_area_scanout_texture(dcl, texture, y0_top, 325 backing_width, backing_height, 326 x, y, width, height, NULL); 327 328 if (qemu_dmabuf_get_allow_fences(dmabuf)) { 329 vc->gfx.guest_fb.dmabuf = dmabuf; 330 } 331 #endif 332 } 333 334 void gtk_gl_area_init(void) 335 { 336 display_opengl = 1; 337 } 338 339 int gd_gl_area_make_current(DisplayGLCtx *dgc, 340 QEMUGLContext ctx) 341 { 342 gdk_gl_context_make_current(ctx); 343 return 0; 344 } 345