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Vertex cache optimizer

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Optimizes indices to make good use of vertex cache on GPU.
This commit is contained in:
lawnjelly
2023-12-19 16:41:30 +00:00
parent 828cedb569
commit 0aa22b8f13
9 changed files with 456 additions and 3 deletions
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14
servers/visual_server.cpp
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@@ -31,6 +31,7 @@
#include "visual_server.h"
#include "core/engine.h"
#include "core/math/vertex_cache_optimizer.h"
#include "core/method_bind_ext.gen.inc"
#include "core/project_settings.h"
@@ -768,6 +769,14 @@ Error VisualServer::_surface_set_data(Array p_arrays, uint32_t p_format, uint32_
ERR_FAIL_COND_V(indices.size() == 0, ERR_INVALID_PARAMETER);
ERR_FAIL_COND_V(indices.size() != p_index_array_len, ERR_INVALID_PARAMETER);
// Vertex cache optimization?
if (p_format & ARRAY_FLAG_USE_VERTEX_CACHE_OPTIMIZATION) {
// Expecting triangles.
ERR_FAIL_COND_V((indices.size() % 3) != 0, ERR_INVALID_PARAMETER);
VertexCacheOptimizer opt;
opt.reorder_indices_pool(indices, indices.size() / 3, p_vertex_array_len);
}
/* determine whether using 16 or 32 bits indices */
PoolVector<int>::Read read = indices.read();
@@ -1276,6 +1285,11 @@ void VisualServer::mesh_add_surface_from_arrays(RID p_mesh, PrimitiveType p_prim
int index_array_len = 0;
int array_len = 0;
// Only implemented for triangles.
if (p_primitive != PrimitiveType::PRIMITIVE_TRIANGLES) {
p_compress_format &= ~ARRAY_FLAG_USE_VERTEX_CACHE_OPTIMIZATION;
}
bool res = _mesh_find_format(p_primitive, p_arrays, p_blend_shapes, p_compress_format, use_split_stream, offsets, attributes_base_offset, attributes_stride, positions_stride, format, index_array_len, array_len);
ERR_FAIL_COND(!res);