writer/wgsl: Implement interpolate attributes

Add E2E tests to cover all of the parameter combinations.

Mark the attribute as unimplemented in the other backends.

Bug: tint:746
Change-Id: I86881ff0b224fe93670db42473341ae185eeabdd
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/56244
Kokoro: Kokoro <noreply+kokoro@google.com>
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
This commit is contained in:
James Price
2021-06-28 23:04:43 +00:00
parent 03a7522276
commit 545f4e0f77
18 changed files with 278 additions and 0 deletions

View File

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[[stage(fragment)]]
fn main(
[[location(0)]] none : f32,
[[location(1), interpolate(flat)]] flat : f32,
[[location(2), interpolate(perspective, center)]] perspective_center : f32,
[[location(3), interpolate(perspective, centroid)]] perspective_centroid : f32,
[[location(4), interpolate(perspective, sample)]] perspective_sample : f32,
[[location(5), interpolate(linear, center)]] linear_center : f32,
[[location(6), interpolate(linear, centroid)]] linear_centroid : f32,
[[location(7), interpolate(linear, sample)]] linear_sample : f32) {
}