mirrors/HandmadeMath
1
0
Fork 0
mirror of https://github.com/HandmadeMath/HandmadeMath.git synced 2025-10-21 16:11:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix inverse perspective

Browse Source
This commit is contained in:
Ben Visness
2023-02-20 13:03:46 -06:00
parent beb837a3c6
commit 422bc588e9
2 changed files with 24 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
HandmadeMath.h
View File

@@ -1857,10 +1857,10 @@ static inline HMM_Mat4 HMM_Perspective_LH_ZO(float FOV, float AspectRatio, float
return Result;
}
COVERAGE(HMM_InvPerspective, 1)
static inline HMM_Mat4 HMM_InvPerspective(HMM_Mat4 PerspectiveMatrix)
COVERAGE(HMM_InvPerspective_RH, 1)
static inline HMM_Mat4 HMM_InvPerspective_RH(HMM_Mat4 PerspectiveMatrix)
{
ASSERT_COVERED(HMM_InvPerspective);
ASSERT_COVERED(HMM_InvPerspective_RH);
HMM_Mat4 Result = {0};
Result.Elements[0][0] = 1.0f / PerspectiveMatrix.Elements[0][0];
@@ -1874,6 +1874,23 @@ static inline HMM_Mat4 HMM_InvPerspective(HMM_Mat4 PerspectiveMatrix)
return Result;
}
COVERAGE(HMM_InvPerspective_LH, 1)
static inline HMM_Mat4 HMM_InvPerspective_LH(HMM_Mat4 PerspectiveMatrix)
{
ASSERT_COVERED(HMM_InvPerspective_LH);
HMM_Mat4 Result = {0};
Result.Elements[0][0] = 1.0f / PerspectiveMatrix.Elements[0][0];
Result.Elements[1][1] = 1.0f / PerspectiveMatrix.Elements[1][1];
Result.Elements[2][2] = 0.0f;
Result.Elements[2][3] = 1.0f / PerspectiveMatrix.Elements[3][2];
Result.Elements[3][3] = PerspectiveMatrix.Elements[2][2] * -Result.Elements[2][3];
Result.Elements[3][2] = PerspectiveMatrix.Elements[2][3];
return Result;
}
COVERAGE(HMM_Translate, 1)
static inline HMM_Mat4 HMM_Translate(HMM_Vec3 Translation)
{

8
test/categories/MatrixOps.h
View File

@@ -274,22 +274,22 @@ TEST(InvMatrix, InvPerspective)
{
{
HMM_Mat4 Matrix = HMM_Perspective_RH_NO(HMM_AngleDeg(120), 16.0/9.0, 10, 10000);
HMM_Mat4 Inverse = HMM_InvPerspective(Matrix);
HMM_Mat4 Inverse = HMM_InvPerspective_RH(Matrix);
EXPECT_M4_EQ(HMM_MulM4(Matrix, Inverse), HMM_M4D(1.0f));
}
{
HMM_Mat4 Matrix = HMM_Perspective_RH_ZO(HMM_AngleDeg(120), 16.0/9.0, 10, 10000);
HMM_Mat4 Inverse = HMM_InvPerspective(Matrix);
HMM_Mat4 Inverse = HMM_InvPerspective_RH(Matrix);
EXPECT_M4_EQ(HMM_MulM4(Matrix, Inverse), HMM_M4D(1.0f));
}
{
HMM_Mat4 Matrix = HMM_Perspective_LH_NO(HMM_AngleDeg(120), 16.0/9.0, 10, 10000);
HMM_Mat4 Inverse = HMM_InvPerspective(Matrix);
HMM_Mat4 Inverse = HMM_InvPerspective_LH(Matrix);
EXPECT_M4_EQ(HMM_MulM4(Matrix, Inverse), HMM_M4D(1.0f));
}
{
HMM_Mat4 Matrix = HMM_Perspective_LH_ZO(HMM_AngleDeg(120), 16.0/9.0, 10, 10000);
HMM_Mat4 Inverse = HMM_InvPerspective(Matrix);
HMM_Mat4 Inverse = HMM_InvPerspective_LH(Matrix);
EXPECT_M4_EQ(HMM_MulM4(Matrix, Inverse), HMM_M4D(1.0f));
}
}