YourWishes/cglm
1
0
Fork 0
mirror of https://github.com/recp/cglm.git synced 2026-02-17 03:39:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add CGLM_FORCE_DEPTH_ZERO_TO_ONE support to glm_unprojecti

Browse Source
This commit is contained in:
Caleb Gingles
2021-08-15 17:34:26 -04:00
parent abbeb274c5
commit 07aee82125
3 changed files with 130 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
include/cglm/project.h
View File

@@ -13,6 +13,17 @@
#include "vec4.h"
#include "mat4.h"
#ifndef CGLM_CLIPSPACE_INCLUDE_ALL
# if CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_ZO_BIT
# include "clipspace/project_zo.h"
# elif CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_NO_BIT
# include "clipspace/project_no.h"
# endif
#else
# include "clipspace/project_zo.h"
# include "clipspace/project_no.h"
#endif
/*!
* @brief maps the specified viewport coordinates into specified space [1]
* the matrix should contain projection matrix.
@@ -42,16 +53,11 @@
CGLM_INLINE
void
glm_unprojecti(vec3 pos, mat4 invMat, vec4 vp, vec3 dest) {
vec4 v;
v[0] = 2.0f * (pos[0] - vp[0]) / vp[2] - 1.0f;
v[1] = 2.0f * (pos[1] - vp[1]) / vp[3] - 1.0f;
v[2] = 2.0f * pos[2] - 1.0f;
v[3] = 1.0f;
glm_mat4_mulv(invMat, v, v);
glm_vec4_scale(v, 1.0f / v[3], v);
glm_vec3(v, dest);
#if CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_ZO_BIT
glm_unprojecti_zo(pos, invMat, vp, dest);
#elif CGLM_CONFIG_CLIP_CONTROL & CGLM_CLIP_CONTROL_NO_BIT
glm_unprojecti_no(pos, invMat, vp, dest);
#endif
}
/*!