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gl: Prevent bad downloads

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When the format we want doesn't match the format
of the GL texture, we need to download as RGBA
and convert.
This commit is contained in:
Matthias Clasen
2023-05-29 12:51:22 -04:00
parent 21c53a1969
commit 6b25a375fa
1 changed files with 9 additions and 1 deletions
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10
gdk/gdkgltexture.c
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@@ -171,13 +171,21 @@ gdk_gl_texture_do_download (GdkGLTexture *self,
Download *download = download_;
GLenum gl_internal_format, gl_format, gl_type;
int major, minor;
unsigned int internal_texture_format, dummy;
expected_stride = texture->width * gdk_memory_format_bytes_per_pixel (download->format);
gdk_gl_context_get_version (context, &major, &minor);
gdk_memory_format_gl_format (gdk_texture_get_format (texture),
FALSE,
major, minor,
&internal_texture_format,
&dummy, &dummy);
if (download->stride == expected_stride &&
!gdk_gl_context_get_use_es (context) &&
gdk_memory_format_gl_format (download->format, TRUE, major, minor, &gl_internal_format, &gl_format, &gl_type))
gdk_memory_format_gl_format (download->format, FALSE, major, minor, &gl_internal_format, &gl_format, &gl_type) &&
gl_internal_format == internal_texture_format)
{
glGetTexImage (GL_TEXTURE_2D,
0,