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MindSpunk 2018-12-14 23:03:13 +11:00 committed by Sébastien Crozet
parent 205ca1f10c
commit 112b9e845c
2 changed files with 20 additions and 1 deletions
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15
nalgebra-glm/src/ext/matrix_clip_space.rs
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@ -870,7 +870,20 @@ pub fn perspective_fov_zo<N: Real>(fov: N, width: N, height: N, near: N, far: N)
/// 0 to 1 depth clip space or a -1 to 1 depth clip space.
///
pub fn perspective<N: Real>(aspect: N, fovy: N, near: N, far: N) -> TMat4<N> {
// TODO: Breaking change: the arguments can be reversed back to proper glm conventions
// TODO: Breaking change - the arguments can be reversed back to proper glm conventions
//
// Prior to changes to support configuring the behaviour of this function it was simply
// a wrapper around Perspective3::new(). The argument order for that function is different
// than the glm convention, but reordering the arguments would've caused pointlessly
// un-optimal code to be generated so they were rearranged so the function would just call
// straight through.
//
// Now this call to Perspective3::new() is no longer made so the functions can have their
// arguments reordered to the glm convention. Unfortunately this is a breaking change so
// can't be cleanly integrated into the existing library version without breaking other
// people's code. Reordering to glm isn't a huge deal but if it is done it will have to be
// in a major API breaking update.
//
if cfg!(feature="zero_to_one_clip_default") {
perspective_zo(aspect, fovy, near, far)
} else if cfg!(feature="negone_to_one_clip_default") {

6
nalgebra-glm/tests/lib.rs
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@ -6,6 +6,7 @@ use na::Orthographic3;
use glm::Mat4;
use glm::Vec4;
// Ensure that under default conditions the library doesn't break interface with old convention
#[test]
pub fn orthographic_glm_nalgebra_same()
{
@ -19,6 +20,7 @@ pub fn orthographic_glm_nalgebra_same()
assert_eq!(na_mat, gl_mat);
}
// Ensure that under default conditions the library doesn't break interface with old convention
#[test]
pub fn perspective_glm_nalgebra_same()
{
@ -33,6 +35,7 @@ pub fn perspective_glm_nalgebra_same()
assert_eq!(na_mat, gl_mat);
}
// Ensure that under default conditions the library doesn't break interface with old convention
#[test]
pub fn orthographic_glm_nalgebra_project_same()
{
@ -48,9 +51,11 @@ pub fn orthographic_glm_nalgebra_project_same()
let na_pt = na_mat * point;
let gl_pt = gl_mat * point;
assert_eq!(na_mat, gl_mat);
assert_eq!(na_pt, gl_pt);
}
// Ensure that under default conditions the library doesn't break interface with old convention
#[test]
pub fn perspective_glm_nalgebra_project_same()
{
@ -67,5 +72,6 @@ pub fn perspective_glm_nalgebra_project_same()
let na_pt = na_mat * point;
let gl_pt = gl_mat * point;
assert_eq!(na_mat, gl_mat);
assert_eq!(na_pt, gl_pt);
}