From: Dongwon Kim <dongwon.kim@intel.com>
To: qemu-devel@nongnu.org
Cc: Dongwon Kim <dongwon.kim@intel.com>, Gerd Hoffmann <kraxel@redhat.com>
Subject: [PATCH 2/2] ui/gtk-egl: blitting partial guest fb to the proper scanout surface
Date: Fri, 17 Sep 2021 11:16:53 -0700 [thread overview]
Message-ID: <20210917181653.25487-2-dongwon.kim@intel.com> (raw)
In-Reply-To: <20210917181653.25487-1-dongwon.kim@intel.com>
eb_fb_blit should be able to blit partial image of guest display (blob res)
in case multiple displays are configured for the guest and they are set as extended-
desktop mode.
v2: egl_fb includes dmabuf info then make egl_fb_blit position and size
parameters programmed in dmabuf structure (previously position/size
parameters were given to egl_fb_blit separately)
(Vivek Kasireddy)
changed the commit message as there is no interface change to egl_fb_blit
Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
---
ui/egl-helpers.c | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c
index 385a3fa752..3a88245b67 100644
--- a/ui/egl-helpers.c
+++ b/ui/egl-helpers.c
@@ -90,14 +90,31 @@ void egl_fb_setup_new_tex(egl_fb *fb, int width, int height)
void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip)
{
- GLuint y1, y2;
+ GLuint x1 = 0;
+ GLuint y1 = 0;
+ GLuint x2, y2;
+ GLuint w = src->width;
+ GLuint h = src->height;
glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, dst->framebuffer);
glViewport(0, 0, dst->width, dst->height);
- y1 = flip ? src->height : 0;
- y2 = flip ? 0 : src->height;
- glBlitFramebuffer(0, y1, src->width, y2,
+
+ if (src->dmabuf) {
+ x1 = src->dmabuf->x;
+ y1 = src->dmabuf->y;
+ w = src->dmabuf->scanout_width;
+ h = src->dmabuf->scanout_height;
+ }
+
+ w = (x1 + w) > src->width ? src->width - x1 : w;
+ h = (y1 + h) > src->height ? src->height - y1 : h;
+
+ y2 = flip ? y1 : h + y1;
+ y1 = flip ? h + y1 : y1;
+ x2 = x1 + w;
+
+ glBlitFramebuffer(x1, y1, x2, y2,
0, 0, dst->width, dst->height,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
}
--
2.17.1
next prev parent reply other threads:[~2021-09-17 18:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-17 18:16 [PATCH 1/2] virtio-gpu: splitting one extended mode guest fb into n-scanouts Dongwon Kim
2021-09-17 18:16 ` Dongwon Kim [this message]
-- strict thread matches above, loose matches on Subject: below --
2021-07-06 23:52 Dongwon Kim
2021-07-06 23:52 ` [PATCH 2/2] ui/gtk-egl: blitting partial guest fb to the proper scanout surface Dongwon Kim
2021-07-19 6:35 ` Kasireddy, Vivek
2021-07-20 23:29 ` Dongwon Kim
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