1916907 - Support linear gradient in Accelerated Canvas2D

Status: RESOLVED FIXED

(Core :: Graphics: Canvas2D, enhancement)

Comment 1

[Lee Salzman [:lsalzman]]

Attachment: Bug 1916907 - Support linear gradients in DrawTargetWebgl. r?aosmond

This attempts to map linear gradient to 1D textures of sufficient resolution
for a given rendered primitive. The 1D texture can then be rendered using
the image shader, without having to add any specialized gradient shaders.

The 1D ramp textures are much smaller than uploading a texture for an entire
fallback primitive, which becomes a significant performance benefit in the
case of primitives that take up a large area on screen.

In the future it might be possible to cache these ramp textures, but for now
they remain uncached.

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/36c29f0fa528
Support linear gradients in DrawTargetWebgl. r=aosmond

Comment 3

[Norisz Fay [:noriszfay]]

https://hg.mozilla.org/mozilla-central/rev/36c29f0fa528