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Corrected errors in Perspective function

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Kyle De'Vir
2016-05-28 23:54:08 +10:00
parent fda756706d
commit 136b049106
1 changed files with 6 additions and 4 deletions
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10
HandmadeMath.h
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@@ -729,11 +729,13 @@ HMM_Perspective(float FOV, float AspectRatio, float Near, float Far)
{
hmm_mat4 Result = HMM_Mat4d(1.0f);
Result.Elements[0][0] = 1.0f / (AspectRatio * tanf(FOV / 2.0f));
Result.Elements[1][1] = 1.0f / tanf(FOV / 2.0f);
float TanThetaOver2 = tanf(FOV * (HMM_PI32 / 360.0f));
Result.Elements[0][0] = 1.0f / TanThetaOver2;
Result.Elements[1][1] = AspectRatio / TanThetaOver2;
Result.Elements[2][3] = -1.0f;
Result.Elements[2][2] = -(Far + Near) / (Far - Near);
Result.Elements[3][2] = -(2.0f * Far * Near) / (Far - Near);
Result.Elements[2][2] = (Near + Far) / (Near - Far);
Result.Elements[3][2] = (2.0f * Near * Far) / (Near - Far);
Result.Elements[3][3] = 0.0f;
return (Result);