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Use zstd dict for packing/unpacking frame images.

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This only affects run-time memory usage and needs an offline calculation of
the dictionary. Results vary depending on similarity of image blocks.

agora        34.96 MB ->  28.21 MB
agora2       40.75 MB ->  34.14 MB
android-vk   36.21 MB ->  18.44 MB
astar3       44.72 MB ->  43.38 MB
clipper1    134.36 MB ->  52.16 MB
fi           50.82 MB ->  40.79 MB
fi-big      537.74 MB -> 469.54 MB
test         23.26 MB ->   1.87 MB
This commit is contained in:
Bartosz Taudul
2021-05-15 17:02:25 +02:00
parent d555256546
commit c91c7a7fd5
3 changed files with 43 additions and 3 deletions
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server/TracyTextureCompression.hpp
+4
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@@ -11,6 +11,7 @@
struct ZSTD_CCtx_s;
struct ZSTD_DCtx_s;
struct ZSTD_CDict_s;
struct ZSTD_DDict_s;
namespace tracy
{
@@ -23,6 +24,8 @@ public:
TextureCompression();
~TextureCompression();
void SetDict( struct ZSTD_DDict_s* dict ) { m_dict = dict; }
uint32_t Pack( struct ZSTD_CCtx_s* ctx, char*& buf, size_t& bufsz, const char* image, uint32_t inBytes );
uint32_t Pack( struct ZSTD_CCtx_s* ctx, const struct ZSTD_CDict_s* dict, char*& buf, size_t& bufsz, const char* image, uint32_t inBytes );
@@ -49,6 +52,7 @@ private:
size_t m_bufSize;
struct ZSTD_CCtx_s* m_cctx;
struct ZSTD_DCtx_s* m_dctx;
struct ZSTD_DDict_s* m_dict;
std::atomic<uint64_t> m_inputBytes { 0 };
std::atomic<uint64_t> m_outputBytes { 0 };