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Code Issues 142 Wiki Activity

perf(gl46): leave out instance buckets before the culling, lod bounds once per model, shared walks of the shadow cascades

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Hirek
2026-10-22 20:13:25 +02:00
parent b343e98e22
commit 5d3f857c39
7 changed files with 250 additions and 51 deletions
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18
rendering/opengl46/opengl46renderer.h
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@@ -368,6 +368,10 @@ class opengl46_renderer : public gfx_renderer {
void Queue_Instances( scene::basic_cell const *Cell );
// makes the records of the instances held by a bucket of a scene cell, with locations relative to Origin
void Update_Instance_Records( TModel3d const *Model, scene::basic_cell::instance_bucket const &Bucket, glm::dvec3 const &Origin );
// whether none of the instances of a bucket can pass the culling of the current pass, by the bounds of their records
bool Bucket_Culled( scene::basic_cell::instance_bucket const &Bucket ) const;
// the sphere around the locations of the visible instances of a bucket, with a margin for the precision of the records
static scene::bounding_area Bucket_Area( scene::basic_cell::instance_bucket const &Bucket );
// places supplied modelview matrices in the instance buffer of the frame. returns: base instance of the first of them
std::uint32_t Upload_Instance_Modelviews( glm::mat4 const *Modelviews, std::size_t const Count );
// binds the instance buffer of the frame for the vertex shaders (INSTANCE_SSBO_BINDING)
@@ -732,6 +736,20 @@ class opengl46_renderer : public gfx_renderer {
};
std::vector<indirect_draw> m_indirectdraws;
std::vector<gl::instance_draw_command> m_indirectcommands; // in the order of m_indirectdraws
// the walks Record_Indirect_Draws() made for the cascades of the sun shadows in the frame, for the other cascades to copy: the
// draws and commands recorded for a group (model and skins) in each of its lod bands, first none where no cascade walked it
struct cascade_band {
std::uint32_t first;
std::uint32_t count;
};
struct cascade_record {
unsigned int frame { 0 };
std::vector<cascade_band> bands;
};
std::unordered_map<scene::basic_cell::instance_bucket_key, cascade_record, scene::basic_cell::instance_bucket_key_hash> m_cascaderecords;
std::vector<indirect_draw> m_cascadedraws;
std::vector<gl::instance_draw_command> m_cascadecommands;
unsigned int m_cascaderecordframe { 0 };
// multi draws of the recorded draws: whether they were recorded for them (ordered, their model blocks uploaded), and where
// the blocks are
bool m_indirectmultidraw { false };