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 (!dmabuf->draw_submitted) {
64 return;
65 } else {
66 dmabuf->draw_submitted = 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 egl_dmabuf_create_fence(dmabuf);
89 if (dmabuf->fence_fd > 0) {
90 qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
91 return;
92 }
93 graphic_hw_gl_block(vc->gfx.dcl.con, false);
94 }
95 #endif
96 } else {
97 if (!vc->gfx.ds) {
98 return;
99 }
100 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
101
102 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
103 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
104 }
105 }
106
gd_gl_area_update(DisplayChangeListener * dcl,int x,int y,int w,int h)107 void gd_gl_area_update(DisplayChangeListener *dcl,
108 int x, int y, int w, int h)
109 {
110 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
111
112 if (!vc->gfx.gls || !vc->gfx.ds) {
113 return;
114 }
115
116 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
117 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
118 vc->gfx.glupdates++;
119 gdk_gl_context_clear_current();
120 }
121
gd_gl_area_refresh(DisplayChangeListener * dcl)122 void gd_gl_area_refresh(DisplayChangeListener *dcl)
123 {
124 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
125
126 gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
127
128 if (vc->gfx.guest_fb.dmabuf && vc->gfx.guest_fb.dmabuf->draw_submitted) {
129 return;
130 }
131
132 if (!vc->gfx.gls) {
133 if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
134 return;
135 }
136 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
137 vc->gfx.gls = qemu_gl_init_shader();
138 if (vc->gfx.ds) {
139 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
140 }
141 }
142
143 graphic_hw_update(dcl->con);
144
145 if (vc->gfx.glupdates) {
146 vc->gfx.glupdates = 0;
147 gtk_gl_area_set_scanout_mode(vc, false);
148 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
149 }
150 }
151
gd_gl_area_switch(DisplayChangeListener * dcl,DisplaySurface * surface)152 void gd_gl_area_switch(DisplayChangeListener *dcl,
153 DisplaySurface *surface)
154 {
155 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
156 bool resized = true;
157
158 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
159
160 if (vc->gfx.ds &&
161 surface_width(vc->gfx.ds) == surface_width(surface) &&
162 surface_height(vc->gfx.ds) == surface_height(surface)) {
163 resized = false;
164 }
165
166 if (vc->gfx.gls) {
167 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
168 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
169 surface_gl_create_texture(vc->gfx.gls, surface);
170 }
171 vc->gfx.ds = surface;
172
173 if (resized) {
174 gd_update_windowsize(vc);
175 }
176 }
177
gd_cmp_gl_context_version(int major,int minor,QEMUGLParams * params)178 static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
179 {
180 if (major > params->major_ver) {
181 return 1;
182 }
183 if (major < params->major_ver) {
184 return -1;
185 }
186 if (minor > params->minor_ver) {
187 return 1;
188 }
189 if (minor < params->minor_ver) {
190 return -1;
191 }
192 return 0;
193 }
194
gd_gl_area_create_context(DisplayGLCtx * dgc,QEMUGLParams * params)195 QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
196 QEMUGLParams *params)
197 {
198 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
199 GdkWindow *window;
200 GdkGLContext *ctx;
201 GError *err = NULL;
202 int major, minor;
203
204 window = gtk_widget_get_window(vc->gfx.drawing_area);
205 ctx = gdk_window_create_gl_context(window, &err);
206 if (err) {
207 g_printerr("Create gdk gl context failed: %s\n", err->message);
208 g_error_free(err);
209 return NULL;
210 }
211 gdk_gl_context_set_required_version(ctx,
212 params->major_ver,
213 params->minor_ver);
214 gdk_gl_context_realize(ctx, &err);
215 if (err) {
216 g_printerr("Realize gdk gl context failed: %s\n", err->message);
217 g_error_free(err);
218 g_clear_object(&ctx);
219 return NULL;
220 }
221
222 gdk_gl_context_make_current(ctx);
223 gdk_gl_context_get_version(ctx, &major, &minor);
224 gdk_gl_context_clear_current();
225 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
226
227 if (gd_cmp_gl_context_version(major, minor, params) == -1) {
228 /* created ctx version < requested version */
229 g_clear_object(&ctx);
230 }
231
232 trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
233 return ctx;
234 }
235
gd_gl_area_destroy_context(DisplayGLCtx * dgc,QEMUGLContext ctx)236 void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
237 {
238 GdkGLContext *current_ctx = gdk_gl_context_get_current();
239
240 trace_gd_gl_area_destroy_context(ctx, current_ctx);
241 if (ctx == current_ctx) {
242 gdk_gl_context_clear_current();
243 }
244 g_clear_object(&ctx);
245 }
246
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)247 void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
248 uint32_t backing_id,
249 bool backing_y_0_top,
250 uint32_t backing_width,
251 uint32_t backing_height,
252 uint32_t x, uint32_t y,
253 uint32_t w, uint32_t h,
254 void *d3d_tex2d)
255 {
256 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
257
258 vc->gfx.x = x;
259 vc->gfx.y = y;
260 vc->gfx.w = w;
261 vc->gfx.h = h;
262 vc->gfx.y0_top = backing_y_0_top;
263
264 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
265
266 if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
267 gtk_gl_area_set_scanout_mode(vc, false);
268 return;
269 }
270
271 gtk_gl_area_set_scanout_mode(vc, true);
272 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
273 backing_id, false);
274 }
275
gd_gl_area_scanout_disable(DisplayChangeListener * dcl)276 void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
277 {
278 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
279
280 gtk_gl_area_set_scanout_mode(vc, false);
281 }
282
gd_gl_area_scanout_flush(DisplayChangeListener * dcl,uint32_t x,uint32_t y,uint32_t w,uint32_t h)283 void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
284 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
285 {
286 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
287
288 if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
289 graphic_hw_gl_block(vc->gfx.dcl.con, true);
290 vc->gfx.guest_fb.dmabuf->draw_submitted = true;
291 gtk_gl_area_set_scanout_mode(vc, true);
292 }
293 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
294 }
295
gd_gl_area_scanout_dmabuf(DisplayChangeListener * dcl,QemuDmaBuf * dmabuf)296 void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
297 QemuDmaBuf *dmabuf)
298 {
299 #ifdef CONFIG_GBM
300 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
301
302 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
303 egl_dmabuf_import_texture(dmabuf);
304 if (!dmabuf->texture) {
305 return;
306 }
307
308 gd_gl_area_scanout_texture(dcl, dmabuf->texture,
309 dmabuf->y0_top,
310 dmabuf->backing_width, dmabuf->backing_height,
311 dmabuf->x, dmabuf->y, dmabuf->width,
312 dmabuf->height, NULL);
313
314 if (dmabuf->allow_fences) {
315 vc->gfx.guest_fb.dmabuf = dmabuf;
316 }
317 #endif
318 }
319
gtk_gl_area_init(void)320 void gtk_gl_area_init(void)
321 {
322 display_opengl = 1;
323 }
324
gd_gl_area_make_current(DisplayGLCtx * dgc,QEMUGLContext ctx)325 int gd_gl_area_make_current(DisplayGLCtx *dgc,
326 QEMUGLContext ctx)
327 {
328 gdk_gl_context_make_current(ctx);
329 return 0;
330 }
331