1 /*
2 * GTK UI -- egl opengl code.
3 *
4 * Note that gtk 3.16+ (released 2015-03-23) has a GtkGLArea widget,
5 * which is GtkDrawingArea like widget with opengl rendering support.
6 *
7 * This code handles opengl support on older gtk versions, using egl
8 * to get a opengl context for the X11 window.
9 *
10 * This work is licensed under the terms of the GNU GPL, version 2 or later.
11 * See the COPYING file in the top-level directory.
12 */
13
14 #include "qemu/osdep.h"
15 #include "qemu/main-loop.h"
16 #include "qemu/error-report.h"
17
18 #include "trace.h"
19
20 #include "ui/console.h"
21 #include "ui/gtk.h"
22 #include "ui/egl-helpers.h"
23 #include "ui/shader.h"
24
25 #include "system/system.h"
26
gtk_egl_set_scanout_mode(VirtualConsole * vc,bool scanout)27 static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
28 {
29 if (vc->gfx.scanout_mode == scanout) {
30 return;
31 }
32
33 vc->gfx.scanout_mode = scanout;
34 if (!vc->gfx.scanout_mode) {
35 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
36 vc->gfx.esurface, vc->gfx.ectx);
37 egl_fb_destroy(&vc->gfx.guest_fb);
38 if (vc->gfx.surface) {
39 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
40 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
41 }
42 }
43 }
44
45 /** DisplayState Callbacks (opengl version) **/
46
gd_egl_init(VirtualConsole * vc)47 void gd_egl_init(VirtualConsole *vc)
48 {
49 GdkWindow *gdk_window = gtk_widget_get_window(vc->gfx.drawing_area);
50 if (!gdk_window) {
51 return;
52 }
53
54 Window x11_window = gdk_x11_window_get_xid(gdk_window);
55 if (!x11_window) {
56 return;
57 }
58
59 vc->gfx.ectx = qemu_egl_init_ctx();
60 vc->gfx.esurface = qemu_egl_init_surface_x11
61 (vc->gfx.ectx, (EGLNativeWindowType)x11_window);
62
63 assert(vc->gfx.esurface);
64 }
65
gd_egl_draw(VirtualConsole * vc)66 void gd_egl_draw(VirtualConsole *vc)
67 {
68 GdkWindow *window;
69 #ifdef CONFIG_GBM
70 QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
71 int fence_fd;
72 #endif
73 int ww, wh, pw, ph, gs;
74
75 if (!vc->gfx.gls) {
76 return;
77 }
78
79 window = gtk_widget_get_window(vc->gfx.drawing_area);
80 gs = gdk_window_get_scale_factor(window);
81 ww = gdk_window_get_width(window);
82 wh = gdk_window_get_height(window);
83 pw = ww * gs;
84 ph = wh * gs;
85
86 if (vc->gfx.scanout_mode) {
87 #ifdef CONFIG_GBM
88 if (dmabuf) {
89 if (!qemu_dmabuf_get_draw_submitted(dmabuf)) {
90 return;
91 } else {
92 qemu_dmabuf_set_draw_submitted(dmabuf, false);
93 }
94 }
95 #endif
96 gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
97
98 gd_update_scale(vc, ww, wh,
99 surface_width(vc->gfx.ds),
100 surface_height(vc->gfx.ds));
101
102 glFlush();
103 #ifdef CONFIG_GBM
104 if (dmabuf) {
105 egl_dmabuf_create_fence(dmabuf);
106 fence_fd = qemu_dmabuf_get_fence_fd(dmabuf);
107 if (fence_fd >= 0) {
108 qemu_set_fd_handler(fence_fd, gd_hw_gl_flushed, NULL, vc);
109 return;
110 }
111 graphic_hw_gl_block(vc->gfx.dcl.con, false);
112 }
113 #endif
114 } else {
115 if (!vc->gfx.ds) {
116 return;
117 }
118 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
119 vc->gfx.esurface, vc->gfx.ectx);
120
121 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, pw, ph);
122 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
123
124 eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
125
126 gd_update_scale(vc, ww, wh,
127 surface_width(vc->gfx.ds),
128 surface_height(vc->gfx.ds));
129
130 glFlush();
131 }
132 }
133
gd_egl_update(DisplayChangeListener * dcl,int x,int y,int w,int h)134 void gd_egl_update(DisplayChangeListener *dcl,
135 int x, int y, int w, int h)
136 {
137 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
138
139 if (!vc->gfx.gls || !vc->gfx.ds) {
140 return;
141 }
142
143 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
144 vc->gfx.esurface, vc->gfx.ectx);
145 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
146 vc->gfx.glupdates++;
147 eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE,
148 EGL_NO_SURFACE, EGL_NO_CONTEXT);
149 }
150
gd_egl_refresh(DisplayChangeListener * dcl)151 void gd_egl_refresh(DisplayChangeListener *dcl)
152 {
153 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
154
155 gd_update_monitor_refresh_rate(
156 vc, vc->window ? vc->window : vc->gfx.drawing_area);
157
158 if (vc->gfx.guest_fb.dmabuf &&
159 qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
160 gd_egl_draw(vc);
161 return;
162 }
163
164 if (!vc->gfx.esurface) {
165 gd_egl_init(vc);
166 if (!vc->gfx.esurface) {
167 return;
168 }
169 vc->gfx.gls = qemu_gl_init_shader();
170 if (vc->gfx.ds) {
171 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
172 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
173 }
174 #ifdef CONFIG_GBM
175 if (vc->gfx.guest_fb.dmabuf) {
176 egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
177 gd_egl_scanout_dmabuf(dcl, vc->gfx.guest_fb.dmabuf);
178 }
179 #endif
180 }
181
182 graphic_hw_update(dcl->con);
183
184 if (vc->gfx.glupdates) {
185 vc->gfx.glupdates = 0;
186 gtk_egl_set_scanout_mode(vc, false);
187 gd_egl_draw(vc);
188 }
189 }
190
gd_egl_switch(DisplayChangeListener * dcl,DisplaySurface * surface)191 void gd_egl_switch(DisplayChangeListener *dcl,
192 DisplaySurface *surface)
193 {
194 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
195 bool resized = true;
196
197 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
198
199 if (vc->gfx.ds &&
200 surface_width(vc->gfx.ds) == surface_width(surface) &&
201 surface_height(vc->gfx.ds) == surface_height(surface)) {
202 resized = false;
203 }
204 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
205 vc->gfx.esurface, vc->gfx.ectx);
206
207 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
208 vc->gfx.ds = surface;
209 if (vc->gfx.gls) {
210 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
211 }
212
213 if (resized) {
214 gd_update_windowsize(vc);
215 }
216
217 eglMakeCurrent(qemu_egl_display, EGL_NO_SURFACE, EGL_NO_SURFACE,
218 EGL_NO_CONTEXT);
219 }
220
gd_egl_create_context(DisplayGLCtx * dgc,QEMUGLParams * params)221 QEMUGLContext gd_egl_create_context(DisplayGLCtx *dgc,
222 QEMUGLParams *params)
223 {
224 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
225
226 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
227 vc->gfx.esurface, vc->gfx.ectx);
228 return qemu_egl_create_context(dgc, params);
229 }
230
gd_egl_scanout_disable(DisplayChangeListener * dcl)231 void gd_egl_scanout_disable(DisplayChangeListener *dcl)
232 {
233 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
234
235 vc->gfx.w = 0;
236 vc->gfx.h = 0;
237 gtk_egl_set_scanout_mode(vc, false);
238 }
239
gd_egl_scanout_texture(DisplayChangeListener * dcl,uint32_t backing_id,bool backing_y_0_top,uint32_t backing_width,uint32_t backing_height,uint32_t x,uint32_t y,uint32_t w,uint32_t h,void * d3d_tex2d)240 void gd_egl_scanout_texture(DisplayChangeListener *dcl,
241 uint32_t backing_id, bool backing_y_0_top,
242 uint32_t backing_width, uint32_t backing_height,
243 uint32_t x, uint32_t y,
244 uint32_t w, uint32_t h,
245 void *d3d_tex2d)
246 {
247 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
248
249 vc->gfx.x = x;
250 vc->gfx.y = y;
251 vc->gfx.w = w;
252 vc->gfx.h = h;
253 vc->gfx.y0_top = backing_y_0_top;
254
255 if (!vc->gfx.esurface) {
256 gd_egl_init(vc);
257 if (!vc->gfx.esurface) {
258 return;
259 }
260 }
261
262 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
263 vc->gfx.esurface, vc->gfx.ectx);
264
265 gtk_egl_set_scanout_mode(vc, true);
266 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
267 backing_id, false);
268 }
269
gd_egl_scanout_dmabuf(DisplayChangeListener * dcl,QemuDmaBuf * dmabuf)270 void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
271 QemuDmaBuf *dmabuf)
272 {
273 #ifdef CONFIG_GBM
274 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
275 uint32_t x, y, width, height, backing_width, backing_height, texture;
276 bool y0_top;
277
278 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
279 vc->gfx.esurface, vc->gfx.ectx);
280
281 egl_dmabuf_import_texture(dmabuf);
282 texture = qemu_dmabuf_get_texture(dmabuf);
283 if (!texture) {
284 return;
285 }
286
287 x = qemu_dmabuf_get_x(dmabuf);
288 y = qemu_dmabuf_get_y(dmabuf);
289 width = qemu_dmabuf_get_width(dmabuf);
290 height = qemu_dmabuf_get_height(dmabuf);
291 backing_width = qemu_dmabuf_get_backing_width(dmabuf);
292 backing_height = qemu_dmabuf_get_backing_height(dmabuf);
293 y0_top = qemu_dmabuf_get_y0_top(dmabuf);
294
295 gd_egl_scanout_texture(dcl, texture, y0_top, backing_width, backing_height,
296 x, y, width, height, NULL);
297
298 if (qemu_dmabuf_get_allow_fences(dmabuf)) {
299 vc->gfx.guest_fb.dmabuf = dmabuf;
300 }
301 #endif
302 }
303
gd_egl_cursor_dmabuf(DisplayChangeListener * dcl,QemuDmaBuf * dmabuf,bool have_hot,uint32_t hot_x,uint32_t hot_y)304 void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
305 QemuDmaBuf *dmabuf, bool have_hot,
306 uint32_t hot_x, uint32_t hot_y)
307 {
308 #ifdef CONFIG_GBM
309 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
310 uint32_t backing_width, backing_height, texture;
311
312 if (dmabuf) {
313 egl_dmabuf_import_texture(dmabuf);
314 texture = qemu_dmabuf_get_texture(dmabuf);
315 if (!texture) {
316 return;
317 }
318
319 backing_width = qemu_dmabuf_get_backing_width(dmabuf);
320 backing_height = qemu_dmabuf_get_backing_height(dmabuf);
321 egl_fb_setup_for_tex(&vc->gfx.cursor_fb, backing_width, backing_height,
322 texture, false);
323 } else {
324 egl_fb_destroy(&vc->gfx.cursor_fb);
325 }
326 #endif
327 }
328
gd_egl_cursor_position(DisplayChangeListener * dcl,uint32_t pos_x,uint32_t pos_y)329 void gd_egl_cursor_position(DisplayChangeListener *dcl,
330 uint32_t pos_x, uint32_t pos_y)
331 {
332 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
333
334 vc->gfx.cursor_x = pos_x * vc->gfx.scale_x;
335 vc->gfx.cursor_y = pos_y * vc->gfx.scale_y;
336 }
337
gd_egl_scanout_flush(DisplayChangeListener * dcl,uint32_t x,uint32_t y,uint32_t w,uint32_t h)338 void gd_egl_scanout_flush(DisplayChangeListener *dcl,
339 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
340 {
341 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
342 GdkWindow *window;
343 int px_offset, py_offset;
344 int gs;
345 int pw_widget, ph_widget, pw_surface, ph_surface;
346 int ww_widget, wh_widget, ww_surface, wh_surface;
347 int fbw, fbh;
348
349 if (!vc->gfx.scanout_mode) {
350 return;
351 }
352 if (!vc->gfx.guest_fb.framebuffer) {
353 return;
354 }
355
356 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
357 vc->gfx.esurface, vc->gfx.ectx);
358
359 window = gtk_widget_get_window(vc->gfx.drawing_area);
360 gs = gdk_window_get_scale_factor(window);
361 ww_widget = gdk_window_get_width(window);
362 wh_widget = gdk_window_get_height(window);
363 fbw = surface_width(vc->gfx.ds);
364 fbh = surface_height(vc->gfx.ds);
365
366 gd_update_scale(vc, ww_widget, wh_widget, fbw, fbh);
367
368 ww_surface = fbw * vc->gfx.scale_x;
369 wh_surface = fbh * vc->gfx.scale_y;
370 pw_widget = ww_widget * gs;
371 ph_widget = wh_widget * gs;
372 pw_surface = ww_surface * gs;
373 ph_surface = wh_surface * gs;
374
375 px_offset = 0;
376 py_offset = 0;
377 if (pw_widget > pw_surface) {
378 px_offset = (pw_widget - pw_surface) / 2;
379 }
380 if (ph_widget > ph_surface) {
381 py_offset = (ph_widget - ph_surface) / 2;
382 }
383
384 egl_fb_setup_default(&vc->gfx.win_fb, pw_surface, ph_surface,
385 px_offset, py_offset);
386 if (vc->gfx.cursor_fb.texture) {
387 egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
388 vc->gfx.y0_top);
389 egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
390 vc->gfx.y0_top,
391 vc->gfx.cursor_x, vc->gfx.cursor_y,
392 vc->gfx.scale_x, vc->gfx.scale_y);
393 } else {
394 egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
395 }
396
397 #ifdef CONFIG_GBM
398 if (vc->gfx.guest_fb.dmabuf) {
399 egl_dmabuf_create_sync(vc->gfx.guest_fb.dmabuf);
400 }
401 #endif
402
403 eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
404 }
405
gd_egl_flush(DisplayChangeListener * dcl,uint32_t x,uint32_t y,uint32_t w,uint32_t h)406 void gd_egl_flush(DisplayChangeListener *dcl,
407 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
408 {
409 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
410 GtkWidget *area = vc->gfx.drawing_area;
411
412 if (vc->gfx.guest_fb.dmabuf &&
413 !qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
414 graphic_hw_gl_block(vc->gfx.dcl.con, true);
415 qemu_dmabuf_set_draw_submitted(vc->gfx.guest_fb.dmabuf, true);
416 gtk_egl_set_scanout_mode(vc, true);
417 gtk_widget_queue_draw_area(area, x, y, w, h);
418 return;
419 }
420
421 gd_egl_scanout_flush(&vc->gfx.dcl, x, y, w, h);
422 }
423
gtk_egl_init(DisplayGLMode mode)424 void gtk_egl_init(DisplayGLMode mode)
425 {
426 GdkDisplay *gdk_display = gdk_display_get_default();
427 Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
428
429 if (qemu_egl_init_dpy_x11(x11_display, mode) < 0) {
430 return;
431 }
432
433 display_opengl = 1;
434 }
435
gd_egl_make_current(DisplayGLCtx * dgc,QEMUGLContext ctx)436 int gd_egl_make_current(DisplayGLCtx *dgc,
437 QEMUGLContext ctx)
438 {
439 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
440
441 if (!eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
442 vc->gfx.esurface, ctx)) {
443 error_report("egl: eglMakeCurrent failed: %s", qemu_egl_get_error_string());
444 return -1;
445 }
446
447 return 0;
448 }
449