diff options
Diffstat (limited to 'core/math/camera_matrix.cpp')
| -rw-r--r-- | core/math/camera_matrix.cpp | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/core/math/camera_matrix.cpp b/core/math/camera_matrix.cpp index 5e5efb6356..7dbda1d149 100644 --- a/core/math/camera_matrix.cpp +++ b/core/math/camera_matrix.cpp @@ -5,8 +5,8 @@ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ -/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ -/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ +/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ @@ -74,6 +74,15 @@ Plane CameraMatrix::xform4(const Plane &p_vec4) const { return ret; } +void CameraMatrix::adjust_perspective_znear(real_t p_new_znear) { + real_t zfar = get_z_far(); + real_t znear = p_new_znear; + + real_t deltaZ = zfar - znear; + matrix[2][2] = -(zfar + znear) / deltaZ; + matrix[3][2] = -2 * znear * zfar / deltaZ; +} + void CameraMatrix::set_perspective(real_t p_fovy_degrees, real_t p_aspect, real_t p_z_near, real_t p_z_far, bool p_flip_fov) { if (p_flip_fov) { p_fovy_degrees = get_fovy(p_fovy_degrees, 1.0 / p_aspect); @@ -655,6 +664,17 @@ real_t CameraMatrix::get_fov() const { } } +float CameraMatrix::get_lod_multiplier() const { + if (is_orthogonal()) { + return get_viewport_half_extents().x; + } else { + float zn = get_z_near(); + float width = get_viewport_half_extents().x * 2.0; + return 1.0 / (zn / width); + } + + //usage is lod_size / (lod_distance * multiplier) < threshold +} void CameraMatrix::make_scale(const Vector3 &p_scale) { set_identity(); matrix[0][0] = p_scale.x; |