console/win32: allocate shareable display surface
[qemu/ar7.git] / ui / gtk-gl-area.c
blob1605818bd1c6deb8fdbb989c72a862799a95fa73
1 /*
2 * GTK UI -- glarea opengl code.
4 * Requires 3.16+ (GtkGLArea widget).
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 */
10 #include "qemu/osdep.h"
11 #include "qemu/main-loop.h"
13 #include "trace.h"
15 #include "ui/console.h"
16 #include "ui/gtk.h"
17 #include "ui/egl-helpers.h"
19 #include "sysemu/sysemu.h"
21 static void gtk_gl_area_set_scanout_mode(VirtualConsole *vc, bool scanout)
23 if (vc->gfx.scanout_mode == scanout) {
24 return;
27 vc->gfx.scanout_mode = scanout;
28 if (!vc->gfx.scanout_mode) {
29 egl_fb_destroy(&vc->gfx.guest_fb);
30 if (vc->gfx.surface) {
31 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
32 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
37 /** DisplayState Callbacks (opengl version) **/
39 void gd_gl_area_draw(VirtualConsole *vc)
41 #ifdef CONFIG_GBM
42 QemuDmaBuf *dmabuf = vc->gfx.guest_fb.dmabuf;
43 #endif
44 int ww, wh, ws, y1, y2;
46 if (!vc->gfx.gls) {
47 return;
50 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
51 ws = gdk_window_get_scale_factor(gtk_widget_get_window(vc->gfx.drawing_area));
52 ww = gtk_widget_get_allocated_width(vc->gfx.drawing_area) * ws;
53 wh = gtk_widget_get_allocated_height(vc->gfx.drawing_area) * ws;
55 if (vc->gfx.scanout_mode) {
56 if (!vc->gfx.guest_fb.framebuffer) {
57 return;
60 #ifdef CONFIG_GBM
61 if (dmabuf) {
62 if (!dmabuf->draw_submitted) {
63 return;
64 } else {
65 dmabuf->draw_submitted = false;
68 #endif
70 glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.guest_fb.framebuffer);
71 /* GtkGLArea sets GL_DRAW_FRAMEBUFFER for us */
73 glViewport(0, 0, ww, wh);
74 y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
75 y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
76 glBlitFramebuffer(0, y1, vc->gfx.w, y2,
77 0, 0, ww, wh,
78 GL_COLOR_BUFFER_BIT, GL_NEAREST);
79 #ifdef CONFIG_GBM
80 if (dmabuf) {
81 egl_dmabuf_create_sync(dmabuf);
83 #endif
84 glFlush();
85 #ifdef CONFIG_GBM
86 if (dmabuf) {
87 egl_dmabuf_create_fence(dmabuf);
88 if (dmabuf->fence_fd > 0) {
89 qemu_set_fd_handler(dmabuf->fence_fd, gd_hw_gl_flushed, NULL, vc);
90 return;
92 graphic_hw_gl_block(vc->gfx.dcl.con, false);
94 #endif
95 } else {
96 if (!vc->gfx.ds) {
97 return;
99 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
101 surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
102 surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
106 void gd_gl_area_update(DisplayChangeListener *dcl,
107 int x, int y, int w, int h)
109 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
111 if (!vc->gfx.gls || !vc->gfx.ds) {
112 return;
115 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
116 surface_gl_update_texture(vc->gfx.gls, vc->gfx.ds, x, y, w, h);
117 vc->gfx.glupdates++;
120 void gd_gl_area_refresh(DisplayChangeListener *dcl)
122 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
124 gd_update_monitor_refresh_rate(vc, vc->window ? vc->window : vc->gfx.drawing_area);
126 if (!vc->gfx.gls) {
127 if (!gtk_widget_get_realized(vc->gfx.drawing_area)) {
128 return;
130 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
131 vc->gfx.gls = qemu_gl_init_shader();
132 if (vc->gfx.ds) {
133 surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
137 graphic_hw_update(dcl->con);
139 if (vc->gfx.glupdates) {
140 vc->gfx.glupdates = 0;
141 gtk_gl_area_set_scanout_mode(vc, false);
142 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
146 void gd_gl_area_switch(DisplayChangeListener *dcl,
147 DisplaySurface *surface)
149 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
150 bool resized = true;
152 trace_gd_switch(vc->label, surface_width(surface), surface_height(surface));
154 if (vc->gfx.ds &&
155 surface_width(vc->gfx.ds) == surface_width(surface) &&
156 surface_height(vc->gfx.ds) == surface_height(surface)) {
157 resized = false;
160 if (vc->gfx.gls) {
161 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
162 surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
163 surface_gl_create_texture(vc->gfx.gls, surface);
165 vc->gfx.ds = surface;
167 if (resized) {
168 gd_update_windowsize(vc);
172 static int gd_cmp_gl_context_version(int major, int minor, QEMUGLParams *params)
174 if (major > params->major_ver) {
175 return 1;
177 if (major < params->major_ver) {
178 return -1;
180 if (minor > params->minor_ver) {
181 return 1;
183 if (minor < params->minor_ver) {
184 return -1;
186 return 0;
189 QEMUGLContext gd_gl_area_create_context(DisplayGLCtx *dgc,
190 QEMUGLParams *params)
192 VirtualConsole *vc = container_of(dgc, VirtualConsole, gfx.dgc);
193 GdkWindow *window;
194 GdkGLContext *ctx;
195 GError *err = NULL;
196 int major, minor;
198 window = gtk_widget_get_window(vc->gfx.drawing_area);
199 ctx = gdk_window_create_gl_context(window, &err);
200 if (err) {
201 g_printerr("Create gdk gl context failed: %s\n", err->message);
202 g_error_free(err);
203 return NULL;
205 gdk_gl_context_set_required_version(ctx,
206 params->major_ver,
207 params->minor_ver);
208 gdk_gl_context_realize(ctx, &err);
209 if (err) {
210 g_printerr("Realize gdk gl context failed: %s\n", err->message);
211 g_error_free(err);
212 g_clear_object(&ctx);
213 return NULL;
216 gdk_gl_context_make_current(ctx);
217 gdk_gl_context_get_version(ctx, &major, &minor);
218 gdk_gl_context_clear_current();
219 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
221 if (gd_cmp_gl_context_version(major, minor, params) == -1) {
222 /* created ctx version < requested version */
223 g_clear_object(&ctx);
226 trace_gd_gl_area_create_context(ctx, params->major_ver, params->minor_ver);
227 return ctx;
230 void gd_gl_area_destroy_context(DisplayGLCtx *dgc, QEMUGLContext ctx)
232 GdkGLContext *current_ctx = gdk_gl_context_get_current();
234 trace_gd_gl_area_destroy_context(ctx, current_ctx);
235 if (ctx == current_ctx) {
236 gdk_gl_context_clear_current();
238 g_clear_object(&ctx);
241 void gd_gl_area_scanout_texture(DisplayChangeListener *dcl,
242 uint32_t backing_id,
243 bool backing_y_0_top,
244 uint32_t backing_width,
245 uint32_t backing_height,
246 uint32_t x, uint32_t y,
247 uint32_t w, uint32_t h)
249 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
251 vc->gfx.x = x;
252 vc->gfx.y = y;
253 vc->gfx.w = w;
254 vc->gfx.h = h;
255 vc->gfx.y0_top = backing_y_0_top;
257 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
259 if (backing_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
260 gtk_gl_area_set_scanout_mode(vc, false);
261 return;
264 gtk_gl_area_set_scanout_mode(vc, true);
265 egl_fb_setup_for_tex(&vc->gfx.guest_fb, backing_width, backing_height,
266 backing_id, false);
269 void gd_gl_area_scanout_disable(DisplayChangeListener *dcl)
271 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
273 gtk_gl_area_set_scanout_mode(vc, false);
276 void gd_gl_area_scanout_flush(DisplayChangeListener *dcl,
277 uint32_t x, uint32_t y, uint32_t w, uint32_t h)
279 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
281 if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) {
282 graphic_hw_gl_block(vc->gfx.dcl.con, true);
283 vc->gfx.guest_fb.dmabuf->draw_submitted = true;
285 gtk_gl_area_queue_render(GTK_GL_AREA(vc->gfx.drawing_area));
288 void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
289 QemuDmaBuf *dmabuf)
291 #ifdef CONFIG_GBM
292 VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
294 gtk_gl_area_make_current(GTK_GL_AREA(vc->gfx.drawing_area));
295 egl_dmabuf_import_texture(dmabuf);
296 if (!dmabuf->texture) {
297 return;
300 gd_gl_area_scanout_texture(dcl, dmabuf->texture,
301 dmabuf->y0_top, dmabuf->width, dmabuf->height,
302 dmabuf->x, dmabuf->y, dmabuf->scanout_width,
303 dmabuf->scanout_height);
305 if (dmabuf->allow_fences) {
306 vc->gfx.guest_fb.dmabuf = dmabuf;
308 #endif
311 void gtk_gl_area_init(void)
313 display_opengl = 1;
316 int gd_gl_area_make_current(DisplayGLCtx *dgc,
317 QEMUGLContext ctx)
319 gdk_gl_context_make_current(ctx);
320 return 0;