082d020e63
In future, WR will consider this when deciding whether an image should be promoted to be a native compositor surface. Differential Revision: https://phabricator.services.mozilla.com/D55406
20 lines
782 B
Rust
20 lines
782 B
Rust
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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use webrender::api::{ImageData, ImageDescriptor, ImageFormat, ImageDescriptorFlags};
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pub fn make_checkerboard(width: u32, height: u32) -> (ImageDescriptor, ImageData) {
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let mut image_data = Vec::new();
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for y in 0 .. height {
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for x in 0 .. width {
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let lum = 255 * (((x & 8) == 0) ^ ((y & 8) == 0)) as u8;
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image_data.extend_from_slice(&[lum, lum, lum, 0xff]);
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}
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}
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(
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ImageDescriptor::new(width as i32, height as i32, ImageFormat::BGRA8, ImageDescriptorFlags::IS_OPAQUE),
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ImageData::new(image_data)
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)
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}
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