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Change frustum culling calculation for D3D

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This commit is contained in:
Cheesse 2020-12-03 17:23:01 -05:00
parent 7798881442
commit e83d66a7a6
1 changed files with 11 additions and 1 deletions
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12
src/Vectors.c
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@ -2,6 +2,7 @@
#include "ExtMath.h"
#include "Funcs.h"
#include "Constants.h"
#include "Core.h"
void Vec3_Lerp(Vec3* result, const Vec3* a, const Vec3* b, float blend) {
result->X = blend * (b->X - a->X) + a->X;
@ -271,10 +272,19 @@ void FrustumCulling_CalcFrustumEquations(struct Matrix* projection, struct Matri
frustum33 = clip[15] - clip[13];
FrustumCulling_Normalise(&frustum30, &frustum31, &frustum32, &frustum33);
/* Extract the FAR plane */
/* Extract the FAR plane (Different for each graphics backend) */
#if defined(CC_BUILD_GL)
frustum40 = clip[3] - clip[2];
frustum41 = clip[7] - clip[6];
frustum42 = clip[11] - clip[10];
frustum43 = clip[15] - clip[14];
#elif defined(CC_BUILD_D3D9)
frustum40 = clip[2];
frustum41 = clip[6];
frustum42 = clip[10];
frustum43 = clip[14];
#else
#error "Vectors.c: No graphics backend chosen."
#endif
FrustumCulling_Normalise(&frustum40, &frustum41, &frustum42, &frustum43);
}