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gltexturebuilder: Update the docs

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We do handle unpremultiplied alpha correctly (albeit
non-optimally) now.
This commit is contained in:
Matthias Clasen 2023-05-31 14:39:07 -04:00
parent 957fa87fce
commit 39f4d5ccf7
1 changed files with 3 additions and 4 deletions
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7
gdk/gdkgltexturebuilder.c
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@ -649,14 +649,13 @@ gdk_gl_texture_builder_get_format (GdkGLTextureBuilder *self)
* `GDK_MEMORY_R16G16B16A16_PREMULTIPLIED` is expected to be stored as `GL_RGBA16`
* texture, and `GDK_MEMORY_G8A8` is expected to be stored as `GL_RG8` texture.
*
* GDK allows GL textures to have unpremultiplied alpha, but GSK's GL renderer can't
* currently handle such textures. Non-RGBA textures need to have swizzling parameters
* set up properly to be usable in GSK's shaders.
*
* Setting the right format is particularly useful when using high bit depth textures
* to preserve the bit depth, to set the correct value for unpremultiplied textures
* and to make sure opaque textures are treated as such.
*
* Non-RGBA textures need to have swizzling parameters set up properly to be usable
* in GSK's shaders.
*
* Since: 4.12
*/
void