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Runtime dispatch for AVX2

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This commit is contained in:
Ken Cooke 2019-06-23 10:40:15 -07:00
parent 8653118b6c
commit 87e0f5b2bb
1 changed files with 18 additions and 3 deletions
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21
libraries/render-utils/src/Model.cpp
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@ -1716,14 +1716,29 @@ static void packBlendshapeOffsets_ref(BlendshapeOffsetUnpacked* unpacked, Blends
}
}
#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__x86_64__)
//
// Runtime CPU dispatch
//
#include "CPUDetect.h"
void packBlendshapeOffsets_AVX2(float (*unpacked)[9], uint32_t (*packed)[4], int size);
static void packBlendshapeOffsets(BlendshapeOffsetUnpacked* unpacked, BlendshapeOffsetPacked* packed, int size) {
static_assert(sizeof(BlendshapeOffsetUnpacked) == 9 * sizeof(float), "struct BlendshapeOffsetUnpacked size doesn't match.");
static_assert(sizeof(BlendshapeOffsetPacked) == 4 * sizeof(uint32_t), "struct BlendshapeOffsetPacked size doesn't match.");
packBlendshapeOffsets_AVX2((float(*)[9])unpacked, (uint32_t(*)[4])packed, size);
static bool _cpuSupportsAVX2 = cpuSupportsAVX2();
if (_cpuSupportsAVX2) {
static_assert(sizeof(BlendshapeOffsetUnpacked) == 9 * sizeof(float), "struct BlendshapeOffsetUnpacked size doesn't match.");
static_assert(sizeof(BlendshapeOffsetPacked) == 4 * sizeof(uint32_t), "struct BlendshapeOffsetPacked size doesn't match.");
packBlendshapeOffsets_AVX2((float(*)[9])unpacked, (uint32_t(*)[4])packed, size);
} else {
packBlendshapeOffsets_ref(unpacked, packed, size);
}
}
#else // portable reference code
static auto& packBlendshapeOffsets = packBlendshapeOffsets_ref;
#endif
class Blender : public QRunnable {
public: