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updated z range

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Orange
2026-03-23 23:36:19 +03:00
parent a9ff7868cf
commit 4b6db0c402
32 changed files with 592 additions and 79 deletions
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10
source/engines/source_engine/formulas.cpp
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@@ -36,13 +36,21 @@ namespace omath::source_engine
}
Mat4X4 calc_perspective_projection_matrix(const float field_of_view, const float aspect_ratio, const float near,
const float far) noexcept
const float far, const NDCDepthRange ndc_depth_range) noexcept
{
// NOTE: Need magic number to fix fov calculation, since source inherit Quake proj matrix calculation
constexpr auto k_multiply_factor = 0.75f;
const float fov_half_tan = std::tan(angles::degrees_to_radians(field_of_view) / 2.f) * k_multiply_factor;
if (ndc_depth_range == NDCDepthRange::ZERO_TO_ONE)
return {
{1.f / (aspect_ratio * fov_half_tan), 0, 0, 0},
{0, 1.f / (fov_half_tan), 0, 0},
{0, 0, far / (far - near), -(near * far) / (far - near)},
{0, 0, 1, 0},
};
return {
{1.f / (aspect_ratio * fov_half_tan), 0, 0, 0},
{0, 1.f / (fov_half_tan), 0, 0},