Commit Graph

5 Commits

Author SHA1 Message Date
Benjamin Otte
1723ab34e1 gpu: Setup attribute locations
Make the generator generate calls for the correct glBindAttribLocation()
calls.

Usually this was done correctly, but we can't rely on it. So do it
explicitly.
2024-01-07 07:22:53 +01:00
Benjamin Otte
2e81e4d452 gpu: Make box shadow shader use variations
Use it do differentiate between inset and outset shadows.
2024-01-07 07:22:53 +01:00
Benjamin Otte
d900407a18 gpu: Introduce the concept of "variation"
A variation is a #define/specialization constant that every shader can
use to specialize itself as it sees fit.

This commit adds the infrastrcture, future commits will add
implementations.
2024-01-07 07:22:53 +01:00
Benjamin Otte
493b83ff24 gpu: Optimize box-shadow shader
Like in the border shader, don't draw the (potentially large for the
window's shadow) inside part that is transparent.
2024-01-07 07:22:53 +01:00
Benjamin Otte
d8db673fb7 gpu: Add a box shadow shader
Code was inspired mainly by
  https://madebyevan.com/shaders/fast-rounded-rectangle-shadows/
and
  https://pcwalton.github.io/_posts/2015-12-21-drawing-css-box-shadows-in-webrender.html

So far the results aren't cached, that's the task of future commits.
2024-01-07 07:22:51 +01:00