diff options
| author | HOU Qiming <hqm03ster@gmail.com> | 2019-05-07 11:05:01 +0300 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-05-17 13:21:40 +0200 |
| commit | bfafa473ede36f95a71c46271cff07fde1854f2a (patch) | |
| tree | 4f6f6d0a6c68bc40e7a0ff7e0be3035c8904b092 /ui/console-gl.c | |
| parent | 962cf8fd4faefb2d5f425abc5c988ea7ba2bbce9 (diff) | |
ui/console: Precautionary glBindTexture and surface->texture validation in surface_gl_update_texture
In a GVT-g setup with dmabuf and GTK GUI, the current 2D texture at
surface_gl_update_texture is not necessarily
surface->texture. Adding a glBindTexture fixes related crashes and
artifacts, and is generally more secure.
Signed-off-by: HOU Qiming <hqm03ster@gmail.com>
Tested-by: Marcel Apfelbaum<marcel.apfelbaum@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-id: 20190507080501.26712-1-marcel.apfelbaum@gmail.com
[fixed malformed patch, rebase to master]
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'ui/console-gl.c')
| -rw-r--r-- | ui/console-gl.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/ui/console-gl.c b/ui/console-gl.c index a56e1cd8eb..c1cb3bd673 100644 --- a/ui/console-gl.c +++ b/ui/console-gl.c @@ -92,13 +92,17 @@ void surface_gl_update_texture(QemuGLShader *gls, assert(gls); - glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, - surface_stride(surface) / surface_bytes_per_pixel(surface)); - glTexSubImage2D(GL_TEXTURE_2D, 0, - x, y, w, h, - surface->glformat, surface->gltype, - data + surface_stride(surface) * y - + surface_bytes_per_pixel(surface) * x); + if (surface->texture) { + glBindTexture(GL_TEXTURE_2D, surface->texture); + glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, + surface_stride(surface) + / surface_bytes_per_pixel(surface)); + glTexSubImage2D(GL_TEXTURE_2D, 0, + x, y, w, h, + surface->glformat, surface->gltype, + data + surface_stride(surface) * y + + surface_bytes_per_pixel(surface) * x); + } } void surface_gl_render_texture(QemuGLShader *gls, |