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
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 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
gd_gl_area_update(DisplayChangeListener * dcl,int x,int y,int w,int h)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
gd_gl_area_refresh(DisplayChangeListener * dcl)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
gd_gl_area_switch(DisplayChangeListener * dcl,DisplaySurface * surface)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
gd_cmp_gl_context_version(int major,int minor,QEMUGLParams * params)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
gd_gl_area_create_context(DisplayGLCtx * dgc,QEMUGLParams * params)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
gd_gl_area_destroy_context(DisplayGLCtx * dgc,QEMUGLContext ctx)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
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)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
gd_gl_area_scanout_disable(DisplayChangeListener * dcl)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
gd_gl_area_scanout_flush(DisplayChangeListener * dcl,uint32_t x,uint32_t y,uint32_t w,uint32_t h)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
gd_gl_area_scanout_dmabuf(DisplayChangeListener * dcl,QemuDmaBuf * dmabuf)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
gtk_gl_area_init(void)334 void gtk_gl_area_init(void)
335 {
336 display_opengl = 1;
337 }
338
gd_gl_area_make_current(DisplayGLCtx * dgc,QEMUGLContext ctx)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