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Diffstat (limited to 'source/blender/draw/intern/draw_view.hh')
-rw-r--r-- | source/blender/draw/intern/draw_view.hh | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/source/blender/draw/intern/draw_view.hh b/source/blender/draw/intern/draw_view.hh new file mode 100644 index 00000000000..94fb62508bb --- /dev/null +++ b/source/blender/draw/intern/draw_view.hh @@ -0,0 +1,114 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later + * Copyright 2022 Blender Foundation. */ + +#pragma once + +/** \file + * \ingroup draw + */ + +#include "DRW_gpu_wrapper.hh" +#include "DRW_render.h" + +#include "draw_shader_shared.h" + +namespace blender::draw { + +class Manager; + +/* TODO: de-duplicate. */ +using ObjectBoundsBuf = StorageArrayBuffer<ObjectBounds, 128>; +/** \note Using uint4 for declaration but bound as uint. */ +using VisibilityBuf = StorageArrayBuffer<uint4, 1, true>; + +class View { + friend Manager; + + private: + UniformBuffer<ViewMatrices> data_; + UniformBuffer<ViewCullingData> culling_; + /** Frozen version of data_ used for debugging culling. */ + UniformBuffer<ViewMatrices> data_freeze_; + UniformBuffer<ViewCullingData> culling_freeze_; + /** Result of the visibility computation. 1 bit per resource ID. */ + VisibilityBuf visibility_buf_; + + const char *debug_name_; + + bool is_inverted_ = false; + bool do_visibility_ = true; + bool dirty_ = true; + bool frozen_ = false; + + public: + View(const char *name) : visibility_buf_(name), debug_name_(name){}; + /* For compatibility with old system. Will be removed at some point. */ + View(const char *name, const DRWView *view) : visibility_buf_(name), debug_name_(name) + { + float4x4 view_mat, win_mat; + DRW_view_viewmat_get(view, view_mat.ptr(), false); + DRW_view_winmat_get(view, win_mat.ptr(), false); + this->sync(view_mat, win_mat); + } + + void sync(const float4x4 &view_mat, const float4x4 &win_mat); + + bool is_persp() const + { + return data_.winmat[3][3] == 0.0f; + } + + bool is_inverted() const + { + return is_inverted_; + } + + float far_clip() const + { + if (is_persp()) { + return -data_.winmat[3][2] / (data_.winmat[2][2] + 1.0f); + } + return -(data_.winmat[3][2] - 1.0f) / data_.winmat[2][2]; + } + + float near_clip() const + { + if (is_persp()) { + return -data_.winmat[3][2] / (data_.winmat[2][2] - 1.0f); + } + return -(data_.winmat[3][2] + 1.0f) / data_.winmat[2][2]; + } + + const float4x4 &viewmat() const + { + return data_.viewmat; + } + + const float4x4 &viewinv() const + { + return data_.viewinv; + } + + const float4x4 &winmat() const + { + return data_.winmat; + } + + const float4x4 &wininv() const + { + return data_.wininv; + } + + private: + /** Called from draw manager. */ + void bind(); + void compute_visibility(ObjectBoundsBuf &bounds, uint resource_len, bool debug_freeze); + + void update_viewport_size(); + + void frustum_boundbox_calc(BoundBox &bbox); + void frustum_culling_planes_calc(); + void frustum_culling_sphere_calc(const BoundBox &bbox, BoundSphere &bsphere); +}; + +} // namespace blender::draw |