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[Qemu-devel] [PATCH 4/4] gtk-egl: add dmabuf support
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 4/4] gtk-egl: add dmabuf support |
Date: |
Mon, 23 Oct 2017 14:03:17 +0200 |
Add support for the new dmabuf interface.
Signed-off-by: Gerd Hoffmann <address@hidden>
---
include/ui/gtk.h | 11 ++++++++++
ui/gtk-egl.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++--
ui/gtk.c | 6 ++++++
3 files changed, 79 insertions(+), 2 deletions(-)
diff --git a/include/ui/gtk.h b/include/ui/gtk.h
index f6dafc5961..5d61e69b49 100644
--- a/include/ui/gtk.h
+++ b/include/ui/gtk.h
@@ -54,6 +54,9 @@ typedef struct VirtualGfxConsole {
int x, y, w, h;
egl_fb guest_fb;
egl_fb win_fb;
+ egl_fb cursor_fb;
+ int cursor_x;
+ int cursor_y;
bool y0_top;
bool scanout_mode;
#endif
@@ -113,6 +116,14 @@ void gd_egl_scanout_texture(DisplayChangeListener *dcl,
uint32_t backing_height,
uint32_t x, uint32_t y,
uint32_t w, uint32_t h);
+void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf);
+void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf);
+void gd_egl_cursor_position(DisplayChangeListener *dcl,
+ uint32_t pos_x, uint32_t pos_y);
+void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf);
void gd_egl_scanout_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y, uint32_t w, uint32_t h);
void gtk_egl_init(void);
diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index eb86c26a1d..30c121c50c 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -7,6 +7,9 @@
* This code handles opengl support on older gtk versions, using egl
* to get a opengl context for the X11 window.
*
+ * Also needed on newer gtk versions because the GtkGLArea X11 backend
+ * uses glx not egl, but for dma-buf imports we need a egl context.
+ *
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
@@ -194,6 +197,52 @@ void gd_egl_scanout_texture(DisplayChangeListener *dcl,
backing_id, false);
}
+#ifdef CONFIG_OPENGL_DMABUF
+
+void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf)
+{
+ egl_dmabuf_import_texture(dmabuf);
+ if (!dmabuf->texture) {
+ return;
+ }
+
+ gd_egl_scanout_texture(dcl, dmabuf->texture,
+ false, dmabuf->width, dmabuf->height,
+ 0, 0, dmabuf->width, dmabuf->height);
+}
+
+void gd_egl_cursor_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+ egl_dmabuf_import_texture(dmabuf);
+ if (!dmabuf->texture) {
+ return;
+ }
+
+ egl_fb_setup_for_tex(&vc->gfx.cursor_fb, dmabuf->width, dmabuf->height,
+ dmabuf->texture, false);
+}
+
+void gd_egl_cursor_position(DisplayChangeListener *dcl,
+ uint32_t pos_x, uint32_t pos_y)
+{
+ VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl);
+
+ vc->gfx.cursor_x = pos_x;
+ vc->gfx.cursor_y = pos_y;
+}
+
+void gd_egl_release_dmabuf(DisplayChangeListener *dcl,
+ QemuDmaBuf *dmabuf)
+{
+ egl_dmabuf_release_texture(dmabuf);
+}
+
+#endif
+
void gd_egl_scanout_flush(DisplayChangeListener *dcl,
uint32_t x, uint32_t y, uint32_t w, uint32_t h)
{
@@ -213,8 +262,19 @@ void gd_egl_scanout_flush(DisplayChangeListener *dcl,
window = gtk_widget_get_window(vc->gfx.drawing_area);
gdk_drawable_get_size(window, &ww, &wh);
- egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
- egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
+ if (vc->gfx.cursor_fb.texture) {
+ /* have cursor -> render using textures */
+ egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
+ egl_texture_blit(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.guest_fb,
+ vc->gfx.y0_top);
+ egl_texture_blend(vc->gfx.gls, &vc->gfx.win_fb, &vc->gfx.cursor_fb,
+ vc->gfx.y0_top,
+ vc->gfx.cursor_x, vc->gfx.cursor_y);
+ } else {
+ /* no cursor -> use simple framebuffer blit */
+ egl_fb_setup_default(&vc->gfx.win_fb, ww, wh);
+ egl_fb_blit(&vc->gfx.win_fb, &vc->gfx.guest_fb, !vc->gfx.y0_top);
+ }
eglSwapBuffers(qemu_egl_display, vc->gfx.esurface);
}
diff --git a/ui/gtk.c b/ui/gtk.c
index d794fb7fa9..41753184b8 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -692,6 +692,12 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
.dpy_gl_ctx_get_current = qemu_egl_get_current_context,
.dpy_gl_scanout_disable = gd_egl_scanout_disable,
.dpy_gl_scanout_texture = gd_egl_scanout_texture,
+#ifdef CONFIG_OPENGL_DMABUF
+ .dpy_gl_scanout_dmabuf = gd_egl_scanout_dmabuf,
+ .dpy_gl_cursor_dmabuf = gd_egl_cursor_dmabuf,
+ .dpy_gl_cursor_position = gd_egl_cursor_position,
+ .dpy_gl_release_dmabuf = gd_egl_release_dmabuf,
+#endif
.dpy_gl_update = gd_egl_scanout_flush,
};
--
2.9.3