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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
e16f4c87 14#include "qemu/osdep.h"
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15
16#include "trace.h"
17
18#include "ui/console.h"
19#include "ui/gtk.h"
20#include "ui/egl-helpers.h"
f1bd3132 21#include "ui/shader.h"
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22
23#include "sysemu/sysemu.h"
24
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25static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
26{
27 if (vc->gfx.scanout_mode == scanout) {
28 return;
29 }
30
31 vc->gfx.scanout_mode = scanout;
32 if (!vc->gfx.scanout_mode) {
a4f113fd 33 egl_fb_destroy(&vc->gfx.guest_fb);
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34 if (vc->gfx.surface) {
35 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
36 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
37 }
38 }
39}
40
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41/** DisplayState Callbacks (opengl version) **/
42
43void gd_egl_init(VirtualConsole *vc)
44{
45 GdkWindow *gdk_window = gtk_widget_get_window(vc->gfx.drawing_area);
46 if (!gdk_window) {
47 return;
48 }
49
97edf3bd 50 Window x11_window = gdk_x11_window_get_xid(gdk_window);
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51 if (!x11_window) {
52 return;
53 }
54
55 vc->gfx.ectx = qemu_egl_init_ctx();
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56 vc->gfx.esurface = qemu_egl_init_surface_x11
57 (vc->gfx.ectx, (EGLNativeWindowType)x11_window);
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58
59 assert(vc->gfx.esurface);
60}
61
62void gd_egl_draw(VirtualConsole *vc)
63{
64 GdkWindow *window;
65 int ww, wh;
66
4782aeb7 67 if (!vc->gfx.gls) {
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68 return;
69 }
70
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71 window = gtk_widget_get_window(vc->gfx.drawing_area);
72 ww = gdk_window_get_width(window);
73 wh = gdk_window_get_height(window);
74
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75 if (vc->gfx.scanout_mode) {
76 gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
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77
78 vc->gfx.scale_x = (double)ww / vc->gfx.w;
79 vc->gfx.scale_y = (double)wh / vc->gfx.h;
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80 } else {
81 if (!vc->gfx.ds) {
82 return;
83 }
84 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
85 vc->gfx.esurface, vc->gfx.ectx);
97edf3bd 86
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87 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
88 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
97edf3bd 89
4782aeb7 90 eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
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91
92 vc->gfx.scale_x = (double)ww / surface_width(vc->gfx.ds);
93 vc->gfx.scale_y = (double)wh / surface_height(vc->gfx.ds);
4782aeb7 94 }
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95
96 glFlush();
97 graphic_hw_gl_flushed(vc->gfx.dcl.con);
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98}
99
100void gd_egl_update(DisplayChangeListener *dcl,
101 int x, int y, int w, int h)
102{
103 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
104
105 if (!vc->gfx.gls || !vc->gfx.ds) {
106 return;
107 }
108
109 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
110 vc->gfx.esurface, vc->gfx.ectx);
111 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
112 vc->gfx.glupdates++;
113}
114
115void gd_egl_refresh(DisplayChangeListener *dcl)
116{
117 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
118
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119 vc->gfx.dcl.update_interval = gd_monitor_update_interval(
120 vc->window ? vc->window : vc->gfx.drawing_area);
121
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122 if (!vc->gfx.esurface) {
123 gd_egl_init(vc);
124 if (!vc->gfx.esurface) {
125 return;
126 }
46e19e14 127 vc->gfx.gls = qemu_gl_init_shader();
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128 if (vc->gfx.ds) {
129 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
130 }
131 }
132
133 graphic_hw_update(dcl->con);
134
135 if (vc->gfx.glupdates) {
136 vc->gfx.glupdates = 0;
4782aeb7 137 gtk_egl_set_scanout_mode(vc, false);
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138 gd_egl_draw(vc);
139 }
140}
141
142void gd_egl_switch(DisplayChangeListener *dcl,
143 DisplaySurface *surface)
144{
145 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
146 bool resized = true;
147
148 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
149
150 if (vc->gfx.ds &&
151 surface_width(vc->gfx.ds) == surface_width(surface) &&
152 surface_height(vc->gfx.ds) == surface_height(surface)) {
153 resized = false;
154 }
155
156 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
157 vc->gfx.ds = surface;
158 if (vc->gfx.gls) {
159 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
160 }
161
162 if (resized) {
163 gd_update_windowsize(vc);
164 }
165}
166
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167QEMUGLContext gd_egl_create_context(DisplayChangeListener *dcl,
168 QEMUGLParams *params)
169{
170 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
171
172 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
173 vc->gfx.esurface, vc->gfx.ectx);
174 return qemu_egl_create_context(dcl, params);
175}
176
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177void gd_egl_scanout_disable(DisplayChangeListener *dcl)
178{
179 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
180
181 vc->gfx.w = 0;
182 vc->gfx.h = 0;
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183 gtk_egl_set_scanout_mode(vc, false);
184}
185
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186void gd_egl_scanout_texture(DisplayChangeListener *dcl,
187 uint32_t backing_id, bool backing_y_0_top,
188 uint32_t backing_width, uint32_t backing_height,
189 uint32_t x, uint32_t y,
190 uint32_t w, uint32_t h)
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191{
192 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
193
194 vc->gfx.x = x;
195 vc->gfx.y = y;
196 vc->gfx.w = w;
197 vc->gfx.h = h;
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198 vc->gfx.y0_top = backing_y_0_top;
199
200 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
201 vc->gfx.esurface, vc->gfx.ectx);
202
4782aeb7 203 gtk_egl_set_scanout_mode(vc, true);
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204 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
205 backing_id, false);
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206}
207
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208void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
209 QemuDmaBuf *dmabuf)
210{
bc6a3565 211#ifdef CONFIG_GBM
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212 egl_dmabuf_import_texture(dmabuf);
213 if (!dmabuf->texture) {
214 return;
215 }
216
217 gd_egl_scanout_texture(dcl, dmabuf->texture,
218 false, dmabuf->width, dmabuf->height,
219 0, 0, dmabuf->width, dmabuf->height);
220#endif
221}
222
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223void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
224 QemuDmaBuf *dmabuf, bool have_hot,
225 uint32_t hot_x, uint32_t hot_y)
226{
bc6a3565 227#ifdef CONFIG_GBM
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228 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
229
230 if (dmabuf) {
231 egl_dmabuf_import_texture(dmabuf);
232 if (!dmabuf->texture) {
233 return;
234 }
235 egl_fb_setup_for_tex(&vc->gfx.cursor_fb, dmabuf->width, dmabuf->height,
236 dmabuf->texture, false);
237 } else {
238 egl_fb_destroy(&vc->gfx.cursor_fb);
239 }
240#endif
241}
242
243void gd_egl_cursor_position(DisplayChangeListener *dcl,
244 uint32_t pos_x, uint32_t pos_y)
245{
246 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
247
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248 vc->gfx.cursor_x = pos_x * vc->gfx.scale_x;
249 vc->gfx.cursor_y = pos_y * vc->gfx.scale_y;
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250}
251
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252void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
253 QemuDmaBuf *dmabuf)
254{
bc6a3565 255#ifdef CONFIG_GBM
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256 egl_dmabuf_release_texture(dmabuf);
257#endif
258}
259
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260void gd_egl_scanout_flush(DisplayChangeListener *dcl,
261 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
262{
263 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
264 GdkWindow *window;
a4f113fd 265 int ww, wh;
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266
267 if (!vc->gfx.scanout_mode) {
268 return;
269 }
a4f113fd 270 if (!vc->gfx.guest_fb.framebuffer) {
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271 return;
272 }
273
274 eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
275 vc->gfx.esurface, vc->gfx.ectx);
276
4782aeb7 277 window = gtk_widget_get_window(vc->gfx.drawing_area);
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278 ww = gdk_window_get_width(window);
279 wh = gdk_window_get_height(window);
a4f113fd 280 egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
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281 if (vc->gfx.cursor_fb.texture) {
282 egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
283 vc->gfx.y0_top);
284 egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
285 vc->gfx.y0_top,
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286 vc->gfx.cursor_x, vc->gfx.cursor_y,
287 vc->gfx.scale_x, vc->gfx.scale_y);
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288 } else {
289 egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
290 }
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291
292 eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
293}
294
54d208ff 295void gtk_egl_init(DisplayGLMode mode)
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296{
297 GdkDisplay *gdk_display = gdk_display_get_default();
298 Display *x11_display = gdk_x11_display_get_xdisplay(gdk_display);
299
54d208ff 300 if (qemu_egl_init_dpy_x11(x11_display, mode) < 0) {
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301 return;
302 }
303
304 display_opengl = 1;
305}
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306
307int gd_egl_make_current(DisplayChangeListener *dcl,
308 QEMUGLContext ctx)
309{
310 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
311
312 return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
313 vc->gfx.esurface, ctx);
314}