mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-23 04:41:11 +00:00
55278c6768
The upcoming WebXR API (Bug 1419190) requires intermediate calculations of real-world space coordinates to have more precision with larger ranges. I expect that double precision matrix and quaternions will also be useful in other graphics and layout work. It would not be ideal to expand the existing classes to always use double precision, as it would incur a significant performance penalty on certain platforms (eg, Arm). The double-precision variants should be used only when required. The existing gfx::Matrix4x4 and gfx::Quaternion implementation can be extended with templates to generate both single and double precision variants. Differential Revision: https://phabricator.services.mozilla.com/D22010 --HG-- extra : moz-landing-system : lando
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef MOZILLA_GFX_MATRIX_FWD_H_
|
|
#define MOZILLA_GFX_MATRIX_FWD_H_
|
|
|
|
// Forward declare enough things to define the typedefs |Matrix| and
|
|
// |Matrix4x4|.
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
template <class T>
|
|
class BaseMatrix;
|
|
|
|
typedef float Float;
|
|
typedef BaseMatrix<Float> Matrix;
|
|
|
|
typedef double Double;
|
|
typedef BaseMatrix<Double> MatrixDouble;
|
|
|
|
struct UnknownUnits;
|
|
|
|
template <class SourceUnits, class TargetUnits, class T = Float>
|
|
class Matrix4x4Typed;
|
|
template <class SourceUnits, class TargetUnits>
|
|
class Matrix4x4TypedFlagged;
|
|
|
|
typedef Matrix4x4Typed<UnknownUnits, UnknownUnits> Matrix4x4;
|
|
typedef Matrix4x4Typed<UnknownUnits, UnknownUnits, double> Matrix4x4Double;
|
|
typedef Matrix4x4TypedFlagged<UnknownUnits, UnknownUnits> Matrix4x4Flagged;
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif
|