PySoy: Load RGBA Texture
completed by: Matt Habel
mentors: Amaury Medeiros, Arc Riley, Tony Young, David Czech, Mayank Singh
We use Cairo to load PNG and SVG files into soy.textures.Texture, however Cairo uses a strange "BGRA" internal storage format which we need to copy into an OpenGL texture for rendering. This is an ideal use of Orc: a src and dst array, nested loops, and copying individual bytes.
Write a new function in Orc to copy the A (Alpha) component, then RGB values
multiplied by (255/A) since they're provided with the alpha already applied.
This new function should go in
then get called from
libsoy/src/textures/Texture.gs within the
_copySurface method for RGBA surfaces.
While working on this task you should join and remain in #PySoy on Freenode to get help, feedback, and guidance from mentors and other developers. Code updates which may affect your work are also announced here as they happen.
When you've done, commit your work and post the resulting changeset url to this task.