Mirrors/bx
1
0
Fork 0
mirror of https://github.com/bkaradzic/bx.git synced 2026-02-17 20:52:37 +01:00
Code Issues Packages Projects Releases Wiki Activity

mtxOrtho: add option for creating OpenGL style orthographic projections

Browse Source
This commit is contained in:
Lunkhound
2016-01-15 14:46:57 -08:00
parent 393410dff2
commit 9898271cf7
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
include/bx/fpumath.h
View File

@@ -715,14 +715,14 @@ namespace bx
mtxProjRh(_result, _fovy, _aspect, _near, _far, _oglNdc);
}
inline void mtxOrtho(float* _result, float _left, float _right, float _bottom, float _top, float _near, float _far, float _offset = 0.0f)
inline void mtxOrtho(float* _result, float _left, float _right, float _bottom, float _top, float _near, float _far, float _offset = 0.0f, bool _oglNdc = false)
{
const float aa = 2.0f/(_right - _left);
const float bb = 2.0f/(_top - _bottom);
const float cc = 1.0f/(_far - _near);
const float cc = _oglNdc ? 2.0f/(_far - _near) : 1.0f/(_far - _near);
const float dd = (_left + _right)/(_left - _right);
const float ee = (_top + _bottom)/(_bottom - _top);
const float ff = _near / (_near - _far);
const float ff = _oglNdc ? (_near + _far)/(_near - _far) : _near/(_near - _far);
memset(_result, 0, sizeof(float)*16);
_result[ 0] = aa;