73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include <cstdint>
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#include "BLI_hash.hh"
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#include "BLI_map.hh"
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#include "BLI_math_vector_types.hh"
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#include "BLI_vector.hh"
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#include "GPU_texture.h"
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#include "COM_texture_pool.hh"
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namespace blender::realtime_compositor {
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/* -------------------------------------------------------------------- */
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/** \name Texture Pool Key
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* \{ */
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TexturePoolKey::TexturePoolKey(int2 size, eGPUTextureFormat format) : size(size), format(format) {}
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TexturePoolKey::TexturePoolKey(const GPUTexture *texture)
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{
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size = int2(GPU_texture_width(texture), GPU_texture_height(texture));
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format = GPU_texture_format(texture);
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}
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uint64_t TexturePoolKey::hash() const
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{
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return get_default_hash_3(size.x, size.y, format);
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}
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bool operator==(const TexturePoolKey &a, const TexturePoolKey &b)
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{
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return a.size == b.size && a.format == b.format;
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Texture Pool
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* \{ */
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GPUTexture *TexturePool::acquire(int2 size, eGPUTextureFormat format)
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{
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/* Check if there is an available texture with the required specification, and if one exists,
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* return it. */
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const TexturePoolKey key = TexturePoolKey(size, format);
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Vector<GPUTexture *> &available_textures = textures_.lookup_or_add_default(key);
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if (!available_textures.is_empty()) {
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return available_textures.pop_last();
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}
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/* Otherwise, allocate a new texture. */
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return allocate_texture(size, format);
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}
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void TexturePool::release(GPUTexture *texture)
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{
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textures_.lookup(TexturePoolKey(texture)).append(texture);
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}
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void TexturePool::reset()
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{
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textures_.clear();
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}
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/** \} */
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} // namespace blender::realtime_compositor
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