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gsk: Support straight alpha textures

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This is not the optimal way of doing it: we're
reuploading the texture with client-side conversion.
But it fits nicely into our current handling of mipmaps.

We can do better once we use shaders for colorspace
conversions.
This commit is contained in:
Matthias Clasen 2023-05-31 14:33:52 -04:00
parent e8bdd46d8d
commit 957fa87fce
1 changed files with 2 additions and 1 deletions
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gsk/gl/gskgldriver.c
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@ -761,7 +761,8 @@ gsk_gl_driver_load_texture (GskGLDriver *self,
GdkGLContext *texture_context = gdk_gl_texture_get_context (gl_texture);
if (gdk_gl_context_is_shared (context, texture_context) &&
(!ensure_mipmap || gdk_gl_texture_has_mipmap (gl_texture)))
(!ensure_mipmap || gdk_gl_texture_has_mipmap (gl_texture)) &&
gdk_memory_format_alpha (gdk_texture_get_format (texture)) != GDK_MEMORY_ALPHA_STRAIGHT)
{
/* A GL texture from the same GL context is a simple task... */
return gdk_gl_texture_get_id (gl_texture);