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| author | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-09 09:39:11 +0200 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-17 13:42:02 +0200 |
| commit | d2329237af197429492ec27d22a4ba4f121dbc10 (patch) | |
| tree | a8bfaa3bb76ecc3f4d96faff146eab22be92e973 /ui | |
| parent | 89ea03a7dc83ca36b670ba7f787802791fcb04b1 (diff) | |
| download | qemu-d2329237af197429492ec27d22a4ba4f121dbc10.zip qemu-d2329237af197429492ec27d22a4ba4f121dbc10.tar.gz qemu-d2329237af197429492ec27d22a4ba4f121dbc10.tar.bz2 | |
ui/egl: fix framebuffer reads
Fix egl_fb_read() to use the (destination) surface size instead of the
(source) framebuffer source for glReadPixels. Pass the DisplaySurface
instead of the pixeldata pointer to egl_fb_read() to make this possible.
With that in place framebuffer reads work fine even if the surface and
framebuffer sizes don't match, so we can remove the guest-triggerable
asserts in egl_scanout_flush().
Buglink: https://bugzilla.redhat.com//show_bug.cgi?id=1749659
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20190909073911.24787-1-kraxel@redhat.com
Diffstat (limited to 'ui')
| -rw-r--r-- | ui/egl-headless.c | 4 | ||||
| -rw-r--r-- | ui/egl-helpers.c | 6 |
2 files changed, 4 insertions, 6 deletions
diff --git a/ui/egl-headless.c b/ui/egl-headless.c index 05b2e7d..fe2a0d1 100644 --- a/ui/egl-headless.c +++ b/ui/egl-headless.c @@ -133,8 +133,6 @@ static void egl_scanout_flush(DisplayChangeListener *dcl, if (!edpy->guest_fb.texture || !edpy->ds) { return; } - assert(surface_width(edpy->ds) == edpy->guest_fb.width); - assert(surface_height(edpy->ds) == edpy->guest_fb.height); assert(surface_format(edpy->ds) == PIXMAN_x8r8g8b8); if (edpy->cursor_fb.texture) { @@ -149,7 +147,7 @@ static void egl_scanout_flush(DisplayChangeListener *dcl, egl_fb_blit(&edpy->blit_fb, &edpy->guest_fb, edpy->y_0_top); } - egl_fb_read(surface_data(edpy->ds), &edpy->blit_fb); + egl_fb_read(edpy->ds, &edpy->blit_fb); dpy_gfx_update(edpy->dcl.con, x, y, w, h); } diff --git a/ui/egl-helpers.c b/ui/egl-helpers.c index edc53f6..7c530c2 100644 --- a/ui/egl-helpers.c +++ b/ui/egl-helpers.c @@ -102,12 +102,12 @@ void egl_fb_blit(egl_fb *dst, egl_fb *src, bool flip) GL_COLOR_BUFFER_BIT, GL_LINEAR); } -void egl_fb_read(void *dst, egl_fb *src) +void egl_fb_read(DisplaySurface *dst, egl_fb *src) { glBindFramebuffer(GL_READ_FRAMEBUFFER, src->framebuffer); glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); - glReadPixels(0, 0, src->width, src->height, - GL_BGRA, GL_UNSIGNED_BYTE, dst); + glReadPixels(0, 0, surface_width(dst), surface_height(dst), + GL_BGRA, GL_UNSIGNED_BYTE, surface_data(dst)); } void egl_texture_blit(QemuGLShader *gls, egl_fb *dst, egl_fb *src, bool flip) |