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 "system/system.h"
20
gtk_gl_area_set_scanout_mode(VirtualConsole * vc,bool scanout)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
gd_gl_area_draw(VirtualConsole * vc)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 pw, ph, gs, y1, y2;
46 int ww, wh;
47 int ww_surface, wh_surface;
48 int fbw, fbh;
49 int wx_offset, wy_offset;
50
51 if (!vc->gfx.gls) {
52 return;
53 }
54
55 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
56 gs = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
57 fbw = surface_width(vc->gfx.ds);
58 fbh = surface_height(vc->gfx.ds);
59 ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area);
60 wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area);
61 pw = ww * gs;
62 ph = wh * gs;
63
64 gd_update_scale(vc, ww, wh, fbw, fbh);
65
66 ww_surface = fbw * vc->gfx.scale_x;
67 wh_surface = fbh * vc->gfx.scale_y;
68
69 wx_offset = wy_offset = 0;
70 if (ww > ww_surface) {
71 wx_offset = (ww - ww_surface) / 2;
72 }
73 if (wh > wh_surface) {
74 wy_offset = (wh - wh_surface) / 2;
75 }
76
77 if (vc->gfx.scanout_mode) {
78 if (!vc->gfx.guest_fb.framebuffer) {
79 return;
80 }
81
82 #ifdef CONFIG_GBM
83 if (dmabuf) {
84 if (!qemu_dmabuf_get_draw_submitted(dmabuf)) {
85 return;
86 } else {
87 qemu_dmabuf_set_draw_submitted(dmabuf, false);
88 }
89 }
90 #endif
91
92 glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
93 /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
94
95 if (wx_offset > 0) {
96 glEnable(GL_SCISSOR_TEST);
97 glScissor(0, 0, wx_offset * gs, wh * gs);
98 glClear(GL_COLOR_BUFFER_BIT);
99 glScissor((ww - wx_offset) * gs, 0, wx_offset * gs, wh * gs);
100 glClear(GL_COLOR_BUFFER_BIT);
101 glDisable(GL_SCISSOR_TEST);
102 }
103 if (wy_offset > 0) {
104 glEnable(GL_SCISSOR_TEST);
105 glScissor(0, 0, ww * gs, wy_offset * gs);
106 glClear(GL_COLOR_BUFFER_BIT);
107 glScissor(0, (wh - wy_offset) * gs, ww * gs, wy_offset * gs);
108 glClear(GL_COLOR_BUFFER_BIT);
109 glDisable(GL_SCISSOR_TEST);
110 }
111
112 glViewport(0, 0, pw, ph);
113 y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
114 y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
115 glBlitFramebuffer(0, y1, vc->gfx.w, y2,
116 wx_offset * gs, wy_offset * gs,
117 (ww - wx_offset) * gs, (wh - wy_offset) * gs,
118 GL_COLOR_BUFFER_BIT, GL_NEAREST);
119 #ifdef CONFIG_GBM
120 if (dmabuf) {
121 egl_dmabuf_create_sync(dmabuf);
122 }
123 #endif
124 glFlush();
125 #ifdef CONFIG_GBM
126 if (dmabuf) {
127 int fence_fd;
128 egl_dmabuf_create_fence(dmabuf);
129 fence_fd = qemu_dmabuf_get_fence_fd(dmabuf);
130 if (fence_fd >= 0) {
131 qemu_set_fd_handler(fence_fd, gd_hw_gl_flushed, NULL, vc);
132 return;
133 }
134 graphic_hw_gl_block(vc->gfx.dcl.con, false);
135 }
136 #endif
137 } else {
138 if (!vc->gfx.ds) {
139 return;
140 }
141 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
142
143 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, pw, ph);
144 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
145 }
146 }
147
gd_gl_area_update(DisplayChangeListener * dcl,int x,int y,int w,int h)148 void gd_gl_area_update(DisplayChangeListener *dcl,
149 int x, int y, int w, int h)
150 {
151 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
152
153 if (!vc->gfx.gls || !vc->gfx.ds) {
154 return;
155 }
156
157 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
158 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
159 vc->gfx.glupdates++;
160 gdk_gl_context_clear_current();
161 }
162
gd_gl_area_refresh(DisplayChangeListener * dcl)163 void gd_gl_area_refresh(DisplayChangeListener *dcl)
164 {
165 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
166
167 gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
168
169 if (vc->gfx.guest_fb.dmabuf &&
170 qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
171 gd_gl_area_draw(vc);
172 return;
173 }
174
175 if (!vc->gfx.gls) {
176 if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
177 return;
178 }
179 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
180 vc->gfx.gls = qemu_gl_init_shader();
181 if (vc->gfx.ds) {
182 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
183 }
184 }
185
186 graphic_hw_update(dcl->con);
187
188 if (vc->gfx.glupdates) {
189 vc->gfx.glupdates = 0;
190 gtk_gl_area_set_scanout_mode(vc, false);
191 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
192 }
193 }
194
gd_gl_area_switch(DisplayChangeListener * dcl,DisplaySurface * surface)195 void gd_gl_area_switch(DisplayChangeListener *dcl,
196 DisplaySurface *surface)
197 {
198 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
199 bool resized = true;
200
201 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
202
203 if (vc->gfx.ds &&
204 surface_width(vc->gfx.ds) == surface_width(surface) &&
205 surface_height(vc->gfx.ds) == surface_height(surface)) {
206 resized = false;
207 }
208
209 if (vc->gfx.gls) {
210 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
211 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
212 surface_gl_create_texture(vc->gfx.gls, surface);
213 }
214 vc->gfx.ds = surface;
215
216 if (resized) {
217 gd_update_windowsize(vc);
218 }
219 }
220
gd_cmp_gl_context_version(int major,int minor,QEMUGLParams * params)221 static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
222 {
223 if (major > params->major_ver) {
224 return 1;
225 }
226 if (major < params->major_ver) {
227 return -1;
228 }
229 if (minor > params->minor_ver) {
230 return 1;
231 }
232 if (minor < params->minor_ver) {
233 return -1;
234 }
235 return 0;
236 }
237
gd_gl_area_create_context(DisplayGLCtx * dgc,QEMUGLParams * params)238 QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
239 QEMUGLParams *params)
240 {
241 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
242 GdkWindow *window;
243 GdkGLContext *ctx;
244 GError *err = NULL;
245 int major, minor;
246
247 window = gtk_widget_get_window(vc->gfx.drawing_area);
248 ctx = gdk_window_create_gl_context(window, &err);
249 if (err) {
250 g_printerr("Create gdk gl context failed: %s\n", err->message);
251 g_error_free(err);
252 return NULL;
253 }
254 gdk_gl_context_set_required_version(ctx,
255 params->major_ver,
256 params->minor_ver);
257 gdk_gl_context_realize(ctx, &err);
258 if (err) {
259 g_printerr("Realize gdk gl context failed: %s\n", err->message);
260 g_error_free(err);
261 g_clear_object(&ctx);
262 return NULL;
263 }
264
265 gdk_gl_context_make_current(ctx);
266 gdk_gl_context_get_version(ctx, &major, &minor);
267 gdk_gl_context_clear_current();
268 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
269
270 if (gd_cmp_gl_context_version(major, minor, params) == -1) {
271 /* created ctx version < requested version */
272 g_clear_object(&ctx);
273 }
274
275 trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
276 return ctx;
277 }
278
gd_gl_area_destroy_context(DisplayGLCtx * dgc,QEMUGLContext ctx)279 void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
280 {
281 GdkGLContext *current_ctx = gdk_gl_context_get_current();
282
283 trace_gd_gl_area_destroy_context(ctx, current_ctx);
284 if (ctx == current_ctx) {
285 gdk_gl_context_clear_current();
286 }
287 g_clear_object(&ctx);
288 }
289
gd_gl_area_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)290 void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
291 uint32_t backing_id,
292 bool backing_y_0_top,
293 uint32_t backing_width,
294 uint32_t backing_height,
295 uint32_t x, uint32_t y,
296 uint32_t w, uint32_t h,
297 void *d3d_tex2d)
298 {
299 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
300
301 vc->gfx.x = x;
302 vc->gfx.y = y;
303 vc->gfx.w = w;
304 vc->gfx.h = h;
305 vc->gfx.y0_top = backing_y_0_top;
306
307 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
308
309 if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
310 gtk_gl_area_set_scanout_mode(vc, false);
311 return;
312 }
313
314 gtk_gl_area_set_scanout_mode(vc, true);
315 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
316 backing_id, false);
317 }
318
gd_gl_area_scanout_disable(DisplayChangeListener * dcl)319 void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
320 {
321 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
322
323 gtk_gl_area_set_scanout_mode(vc, false);
324 }
325
gd_gl_area_scanout_flush(DisplayChangeListener * dcl,uint32_t x,uint32_t y,uint32_t w,uint32_t h)326 void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
327 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
328 {
329 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
330
331 if (vc->gfx.guest_fb.dmabuf &&
332 !qemu_dmabuf_get_draw_submitted(vc->gfx.guest_fb.dmabuf)) {
333 graphic_hw_gl_block(vc->gfx.dcl.con, true);
334 qemu_dmabuf_set_draw_submitted(vc->gfx.guest_fb.dmabuf, true);
335 gtk_gl_area_set_scanout_mode(vc, true);
336 }
337 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
338 }
339
gd_gl_area_scanout_dmabuf(DisplayChangeListener * dcl,QemuDmaBuf * dmabuf)340 void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
341 QemuDmaBuf *dmabuf)
342 {
343 #ifdef CONFIG_GBM
344 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
345 uint32_t x, y, width, height, backing_width, backing_height, texture;
346 bool y0_top;
347
348 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
349 egl_dmabuf_import_texture(dmabuf);
350 texture = qemu_dmabuf_get_texture(dmabuf);
351 if (!texture) {
352 return;
353 }
354
355 x = qemu_dmabuf_get_x(dmabuf);
356 y = qemu_dmabuf_get_y(dmabuf);
357 width = qemu_dmabuf_get_width(dmabuf);
358 height = qemu_dmabuf_get_height(dmabuf);
359 backing_width = qemu_dmabuf_get_backing_width(dmabuf);
360 backing_height = qemu_dmabuf_get_backing_height(dmabuf);
361 y0_top = qemu_dmabuf_get_y0_top(dmabuf);
362
363 gd_gl_area_scanout_texture(dcl, texture, y0_top,
364 backing_width, backing_height,
365 x, y, width, height, NULL);
366
367 if (qemu_dmabuf_get_allow_fences(dmabuf)) {
368 vc->gfx.guest_fb.dmabuf = dmabuf;
369 }
370 #endif
371 }
372
gtk_gl_area_init(void)373 void gtk_gl_area_init(void)
374 {
375 display_opengl = 1;
376 }
377
gd_gl_area_make_current(DisplayGLCtx * dgc,QEMUGLContext ctx)378 int gd_gl_area_make_current(DisplayGLCtx *dgc,
379 QEMUGLContext ctx)
380 {
381 gdk_gl_context_make_current(ctx);
382 return 0;
383 }
384