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resize helper for perspective

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* when window resized we only change aspect ratio, so projection still
keeps same
This commit is contained in:
Recep Aslantas
2016-12-08 22:06:52 +02:00
parent 9370d60837
commit 1eadb38462
1 changed files with 12 additions and 0 deletions
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12
include/cglm-cam.h
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@@ -153,6 +153,18 @@ glm_perspective_default(mat4 dest) {
dest); dest);
} }
CGLM_INLINE
void
glm_perspective_resize(mat4 proj) {
int32_t rect[4];
if (proj[0][0] == 0)
return;
glm_platfom_get_viewport_rect(rect);
proj[0][0] = (float)proj[1][1] * rect[3] / rect[2];
}
CGLM_INLINE CGLM_INLINE
void void
glm_lookat(vec3 eye, glm_lookat(vec3 eye,