This allows virtio-gpu to render in 3d mode.
Uses egl, for gtk versions 3.14 and older.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
include/ui/gtk.h | 16 +++++++
ui/gtk-egl.c | 129 +++++++++++++++++++++++++++++++++++++++++++++++++++----
ui/gtk.c | 7 +++
3 files changed, 144 insertions(+), 8 deletions(-)
diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index ee6dffd..1e04c0c 100644
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -24,6 +24,7 @@
#if defined(CONFIG_OPENGL)
#include "ui/egl-helpers.h"
+#include "ui/egl-context.h"
#endif
/* Compatibility define to let us build on both Gtk2 and Gtk3 */
@@ -50,6 +51,11 @@ typedef struct VirtualGfxConsole {
EGLContext ectx;
EGLSurface esurface;
int glupdates;
+ int x, y, w, h;
+ GLuint tex_id;
+ GLuint fbo_id;
+ bool y0_top;
+ bool scanout_mode;
#endif
} VirtualGfxConsole;
@@ -94,6 +100,16 @@ void gd_egl_update(DisplayChangeListener *dcl,
void gd_egl_refresh(DisplayChangeListener *dcl);
void gd_egl_switch(DisplayChangeListener *dcl,
DisplaySurface *surface);
+qemu_gl_context gd_egl_create_context(DisplayChangeListener *dcl,
+ struct qemu_gl_params *params);
+void gd_egl_scanout(DisplayChangeListener *dcl,
+ uint32_t backing_id, bool backing_y_0_top,
+ uint32_t x, uint32_t y,
+ uint32_t w, uint32_t h);
+void gd_egl_scanout_flush(DisplayChangeListener *dcl,
+ uint32_t x, uint32_t y, uint32_t w, uint32_t h);
void gtk_egl_init(void);
+int gd_egl_make_current(DisplayChangeListener *dcl,
+ qemu_gl_context ctx);
#endif /* UI_GTK_H */
diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index 15b41f2..ae5c7d0 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -21,6 +21,28 @@
#include "sysemu/sysemu.h"
+static void gtk_egl_set_scanout_mode(VirtualConsole *vc, bool scanout)
+{
+ if (vc->gfx.scanout_mode == scanout) {
+ return;
+ }
+
+ vc->gfx.scanout_mode = scanout;
+ if (!vc->gfx.scanout_mode) {
+ if (vc->gfx.fbo_id) {
+ glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT,
+ GL_COLOR_ATTACHMENT0_EXT,
+ GL_TEXTURE_2D, 0, 0);
+ glDeleteFramebuffers(1, &vc->gfx.fbo_id);
+ vc->gfx.fbo_id = 0;
+ }
+ if (vc->gfx.surface) {
+ surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
+ surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
+ }
+ }
+}
+
/** DisplayState Callbacks (opengl version) **/
void gd_egl_init(VirtualConsole *vc)
@@ -50,19 +72,26 @@ void gd_egl_draw(VirtualConsole *vc)
GdkWindow *window;
int ww, wh;
- if (!vc->gfx.gls || !vc->gfx.ds) {
+ if (!vc->gfx.gls) {
return;
}
- eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
- vc->gfx.esurface, vc->gfx.ectx);
+ if (vc->gfx.scanout_mode) {
+ gd_egl_scanout_flush(&vc->gfx.dcl, 0, 0, vc->gfx.w, vc->gfx.h);
+ } else {
+ if (!vc->gfx.ds) {
+ return;
+ }
+ eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
+ vc->gfx.esurface, vc->gfx.ectx);
- window = gtk_widget_get_window(vc->gfx.drawing_area);
- gdk_drawable_get_size(window, &ww, &wh);
- surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
- surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
+ window = gtk_widget_get_window(vc->gfx.drawing_area);
+ gdk_drawable_get_size(window, &ww, &wh);
+ surface_gl_setup_viewport(vc->gfx.gls, vc->gfx.ds, ww, wh);
+ surface_gl_render_texture(vc->gfx.gls, vc->gfx.ds);
- eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
+ eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
+ }
}
void gd_egl_update(DisplayChangeListener *dcl,
@@ -99,6 +128,7 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
if (vc->gfx.glupdates) {
vc->gfx.glupdates = 0;
+ gtk_egl_set_scanout_mode(vc, false);
gd_egl_draw(vc);
}
}
@@ -128,6 +158,80 @@ void gd_egl_switch(DisplayChangeListener *dcl,
}
}
+qemu_gl_context gd_egl_create_context(DisplayChangeListener *dcl,
+ struct qemu_gl_params *params)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+ eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
+ vc->gfx.esurface, vc->gfx.ectx);
+ return qemu_egl_create_context(dcl, params);
+}
+
+void gd_egl_scanout(DisplayChangeListener *dcl,
+ uint32_t backing_id, bool backing_y_0_top,
+ uint32_t x, uint32_t y,
+ uint32_t w, uint32_t h)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+ vc->gfx.x = x;
+ vc->gfx.y = y;
+ vc->gfx.w = w;
+ vc->gfx.h = h;
+ vc->gfx.tex_id = backing_id;
+ vc->gfx.y0_top = backing_y_0_top;
+
+ eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
+ vc->gfx.esurface, vc->gfx.ectx);
+
+ if (vc->gfx.tex_id == 0 || vc->gfx.w == 0 || vc->gfx.h == 0) {
+ gtk_egl_set_scanout_mode(vc, false);
+ return;
+ }
+
+ gtk_egl_set_scanout_mode(vc, true);
+ if (!vc->gfx.fbo_id) {
+ glGenFramebuffers(1, &vc->gfx.fbo_id);
+ }
+
+ glBindFramebuffer(GL_FRAMEBUFFER_EXT, vc->gfx.fbo_id);
+ glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT,
+ GL_TEXTURE_2D, vc->gfx.tex_id, 0);
+}
+
+void gd_egl_scanout_flush(DisplayChangeListener *dcl,
+ uint32_t x, uint32_t y, uint32_t w, uint32_t h)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+ GdkWindow *window;
+ int ww, wh, y1, y2;
+
+ if (!vc->gfx.scanout_mode) {
+ return;
+ }
+ if (!vc->gfx.fbo_id) {
+ return;
+ }
+
+ eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
+ vc->gfx.esurface, vc->gfx.ectx);
+
+ glBindFramebuffer(GL_READ_FRAMEBUFFER, vc->gfx.fbo_id);
+ glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+
+ window = gtk_widget_get_window(vc->gfx.drawing_area);
+ gdk_drawable_get_size(window, &ww, &wh);
+ glViewport(0, 0, ww, wh);
+ y1 = vc->gfx.y0_top ? 0 : vc->gfx.h;
+ y2 = vc->gfx.y0_top ? vc->gfx.h : 0;
+ glBlitFramebuffer(0, y1, vc->gfx.w, y2,
+ 0, 0, ww, wh,
+ GL_COLOR_BUFFER_BIT, GL_NEAREST);
+
+ eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
+}
+
void gtk_egl_init(void)
{
GdkDisplay *gdk_display = gdk_display_get_default();
@@ -139,3 +243,12 @@ void gtk_egl_init(void)
display_opengl = 1;
}
+
+int gd_egl_make_current(DisplayChangeListener *dcl,
+ qemu_gl_context ctx)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+ return eglMakeCurrent(qemu_egl_display, vc->gfx.esurface,
+ vc->gfx.esurface, ctx);
+}
diff --git a/ui/gtk.c b/ui/gtk.c
index df2a79e..6faf5a5 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -604,6 +604,13 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
.dpy_refresh = gd_egl_refresh,
.dpy_mouse_set = gd_mouse_set,
.dpy_cursor_define = gd_cursor_define,
+
+ .dpy_gl_ctx_create = gd_egl_create_context,
+ .dpy_gl_ctx_destroy = qemu_egl_destroy_context,
+ .dpy_gl_ctx_make_current = gd_egl_make_current,
+ .dpy_gl_ctx_get_current = qemu_egl_get_current_context,
+ .dpy_gl_scanout = gd_egl_scanout,
+ .dpy_gl_update = gd_egl_scanout_flush,
};
#endif
--
1.8.3.1
