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optimized view proj matrix generation

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Orange
2024-12-04 16:04:41 +03:00
parent 0587ee440d
commit 4b50ac8c1d
1 changed files with 8 additions and 4 deletions
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12
include/omath/projection/Camera.hpp
View File

@@ -37,6 +37,7 @@ namespace omath::projection
m_viewPort(viewPort), m_fieldOfView(fov), m_farPlaneDistance(far), m_nearPlaneDistance(near), m_viewPort(viewPort), m_fieldOfView(fov), m_farPlaneDistance(far), m_nearPlaneDistance(near),
m_viewAngles(viewAngles), m_origin(position) m_viewAngles(viewAngles), m_origin(position)
{ {
} }
virtual void LookAt(const Vector3& target) = 0; virtual void LookAt(const Vector3& target) = 0;
@@ -45,12 +46,15 @@ namespace omath::projection
[[nodiscard]] virtual Mat4x4Type GetProjectionMatrix() const = 0; [[nodiscard]] virtual Mat4x4Type GetProjectionMatrix() const = 0;
[[nodiscard]] Mat4x4Type GetViewProjectionMatrix() const [[nodiscard]] Mat4x4Type GetViewProjectionMatrix()
{ {
return GetProjectionMatrix() * GetViewMatrix(); if (!m_viewProjectionMatrix)
m_viewProjectionMatrix = GetProjectionMatrix() * GetViewMatrix();
return m_viewProjectionMatrix.value();
} }
[[nodiscard]] std::expected<Vector3, Error> WorldToScreen(const Vector3& worldPosition) const [[nodiscard]] std::expected<Vector3, Error> WorldToScreen(const Vector3& worldPosition)
{ {
auto projected = GetViewProjectionMatrix() * MatColumnFromVector<float, Mat4x4Type::GetStoreOrdering()>(worldPosition); auto projected = GetViewProjectionMatrix() * MatColumnFromVector<float, Mat4x4Type::GetStoreOrdering()>(worldPosition);
@@ -77,7 +81,7 @@ namespace omath::projection
Vector3 m_origin; Vector3 m_origin;
private: private:
std::optional<Mat4x4Type> m_viewProjectionMatrix = std::nullopt;
template<class Type> template<class Type>
[[nodiscard]] [[nodiscard]]
constexpr static bool IsNdcOutOfBounds(const Type& ndc) constexpr static bool IsNdcOutOfBounds(const Type& ndc)