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CGraphics: Fix depth in perspective matrices

This commit is contained in:
Luke Street 2020-10-21 01:34:31 -04:00
parent 5c3267c69d
commit 9021ab2c2d
1 changed files with 13 additions and 5 deletions
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18
Runtime/Graphics/CGraphics.cpp
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@ -191,6 +191,12 @@ void CGraphics::SetModelMatrix(const zeus::CTransform& xf) {
SetViewMatrix();
}
constexpr zeus::CMatrix4f DepthCorrect(
1.f, 0.f, 0.f, 0.f,
0.f, 1.f, 0.f, 0.f,
0.f, 0.f, 0.5f, 0.5f,
0.f, 0.f, 0.f, 1.f);
zeus::CMatrix4f CGraphics::CalculatePerspectiveMatrix(float fovy, float aspect, float znear, float zfar,
bool forRenderer) {
CProjectionState st;
@ -222,9 +228,10 @@ zeus::CMatrix4f CGraphics::GetPerspectiveProjectionMatrix(bool forRenderer) {
float fpn = g_Proj.x18_far + g_Proj.x14_near;
float fmn = g_Proj.x18_far - g_Proj.x14_near;
return zeus::CMatrix4f{2.f * g_Proj.x14_near / rml, 0.f, rpl / rml, 0.f, 0.f, 2.f * g_Proj.x14_near / tmb,
tpb / tmb, 0.f, 0.f, 0.f, -fpn / fmn, -2.f * g_Proj.x18_far * g_Proj.x14_near / fmn, 0.f,
0.f, -1.f, 0.f};
zeus::CMatrix4f mat2{2.f * g_Proj.x14_near / rml, 0.f, rpl / rml, 0.f, 0.f, 2.f * g_Proj.x14_near / tmb,
tpb / tmb, 0.f, 0.f, 0.f, -fpn / fmn, -2.f * g_Proj.x18_far * g_Proj.x14_near / fmn, 0.f,
0.f, -1.f, 0.f};
return forRenderer ? DepthCorrect * mat2 : mat2;
} else {
float rml = g_Proj.x8_right - g_Proj.x4_left;
float rpl = g_Proj.x8_right + g_Proj.x4_left;
@ -233,8 +240,9 @@ zeus::CMatrix4f CGraphics::GetPerspectiveProjectionMatrix(bool forRenderer) {
float fpn = g_Proj.x18_far + g_Proj.x14_near;
float fmn = g_Proj.x18_far - g_Proj.x14_near;
return zeus::CMatrix4f{2.f / rml, 0.f, 0.f, -rpl / rml, 0.f, 2.f / tmb, 0.f, -tpb / tmb, 0.f, 0.f, -2.f / fmn,
-fpn / fmn, 0.f, 0.f, 0.f, 1.f};
zeus::CMatrix4f mat2{2.f / rml, 0.f, 0.f, -rpl / rml, 0.f, 2.f / tmb, 0.f, -tpb / tmb, 0.f, 0.f, -2.f / fmn,
-fpn / fmn, 0.f, 0.f, 0.f, 1.f};
return forRenderer ? DepthCorrect * mat2 : mat2;
}
}