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#include "UnityPrefix.h"
#include "streamedclip.h"
#include "Runtime/mecanim/memory.h"
#include "Runtime/Utilities/Prefetch.h"
#include "Runtime/Math/Simd/math.h"
namespace mecanim
{
namespace animation
{
inline static float EvaluateCache (const StreamedCacheItem& cache, float sampleTime)
{
float t = sampleTime - cache.time;
return (t * (t * (t * cache.coeff[0] + cache.coeff[1]) + cache.coeff[2])) + cache.coeff[3];
}
inline static void EvaluateMultipleCaches ( const StreamedCacheItem& cache0,
const StreamedCacheItem& cache1,
const StreamedCacheItem& cache2,
const StreamedCacheItem& cache3,
float sampleTime, float* output)
{
const math::float4 time(sampleTime);
const math::float4 cachetime(cache0.time, cache1.time, cache2.time, cache3.time);
const math::float4 dt = time - cachetime;
const math::float4 coeffs0(cache0.coeff[0], cache1.coeff[0], cache2.coeff[0], cache3.coeff[0]);
const math::float4 coeffs1(cache0.coeff[1], cache1.coeff[1], cache2.coeff[1], cache3.coeff[1]);
const math::float4 coeffs2(cache0.coeff[2], cache1.coeff[2], cache2.coeff[2], cache3.coeff[2]);
const math::float4 coeffs3(cache0.coeff[3], cache1.coeff[3], cache2.coeff[3], cache3.coeff[3]);
ATTRIBUTE_ALIGN(ALIGN4F) float v[4];
math::store(dt * (dt * (dt * coeffs0 + coeffs1) + coeffs2) + coeffs3, v);
output[0] = v[0];
output[1] = v[1];
output[2] = v[2];
output[3] = v[3];
}
static void EvaluateCaches (const StreamedClipMemory& cache, float sampleTime, float* output)
{
const StreamedCacheItem* caches = &cache.caches[0];
Prefetch(caches);
Prefetch(caches+2);
Prefetch(caches+4);
Prefetch(caches+6);
Prefetch(caches+8);
int i = 0;
for ( ; i+4 <= cache.cacheCount; i+=4, caches+=4 )
{
Prefetch(caches+10);
Prefetch(caches+12);
const StreamedCacheItem& item0 = *(caches);
const StreamedCacheItem& item1 = *(caches+1);
const StreamedCacheItem& item2 = *(caches+2);
const StreamedCacheItem& item3 = *(caches+3);
EvaluateMultipleCaches(item0, item1, item2, item3, sampleTime, &output[i]);
}
for ( ; i<cache.cacheCount; ++i, ++caches)
{
const StreamedCacheItem& item = *caches;
output[i] = EvaluateCache(item, sampleTime);
}
}
static void RewindCache (StreamedClipMemory& cache)
{
cache.time = -std::numeric_limits<float>::infinity();
cache.readByteOffset = 0;
}
static inline void ConsumeCurveTimeData (const CurveTimeData* __restrict curveData, StreamedCacheItem* __restrict caches)
{
float time = curveData->time;
const CurveKey* __restrict keys = reinterpret_cast<const CurveKey*> (curveData + 1);
int count = curveData->count;
Prefetch(keys,0);
Prefetch(keys+3);
int curveIndex = keys[0].curveIndex;
float coeff0 = keys[0].coeff[0];
float coeff1 = keys[0].coeff[1];
float coeff2 = keys[0].coeff[2];
float coeff3 = keys[0].coeff[3];
for (int i=1;i<count;i++)
{
Prefetch(keys+3+i);
StreamedCacheItem& activeCache = caches[curveIndex];
activeCache.time = time;
activeCache.coeff[0] = coeff0;
activeCache.coeff[1] = coeff1;
activeCache.coeff[2] = coeff2;
activeCache.coeff[3] = coeff3;
curveIndex = keys[i].curveIndex;
coeff0 = keys[i].coeff[0];
coeff1 = keys[i].coeff[1];
coeff2 = keys[i].coeff[2];
coeff3 = keys[i].coeff[3];
}
StreamedCacheItem& activeCache = caches[curveIndex];
activeCache.time = time;
activeCache.coeff[0] = coeff0;
activeCache.coeff[1] = coeff1;
activeCache.coeff[2] = coeff2;
activeCache.coeff[3] = coeff3;
}
static void SeekClipForward (const UInt8* curveData, float time, StreamedClipMemory& cache)
{
int readByteOffset = cache.readByteOffset;
const CurveTimeData* data = reinterpret_cast<const CurveTimeData*> (curveData + readByteOffset);
while (time >= data->time)
{
// Consume the data and apply it to the cache
ConsumeCurveTimeData(data, cache.caches);
// Seek forward by the consumed data
readByteOffset += sizeof(CurveTimeData) + data->count * sizeof(CurveKey);
data = reinterpret_cast<const CurveTimeData*> (curveData + readByteOffset);
}
// Synchronize cached time & offset
cache.time = time;
cache.readByteOffset = readByteOffset;
}
void SeekClip (const StreamedClip& curveData, StreamedClipMemory& cache, float time)
{
Assert(cache.cacheCount == curveData.curveCount);
// No seeking is necessary, we are exactly at the same cached time
// (Happens due to SampleClipAtIndex)
// @TODO: it would be best to remove that and instead seperate root motion data from other data
if (time == cache.time)
return;
// Seeking backwards is not supported. Jump the beginning of curve.
if (time < cache.time)
RewindCache(cache);
// Seek and make sure the curve cache is up to date
const UInt8* stream = reinterpret_cast<const UInt8*> (curveData.data.Get());
SeekClipForward(stream, time, cache);
}
void SampleClip (const StreamedClip& curveData, StreamedClipMemory& cache, float time, float* output)
{
SeekClip(curveData, cache, time);
// Evaluate the cache and write sampled values to output
EvaluateCaches(cache, time, output);
}
float SampleClipAtIndex (const StreamedClip& curveData, StreamedClipMemory& cache, int index, float time)
{
Assert(index < curveData.curveCount);
SeekClip(curveData, cache, time);
return EvaluateCache(cache.caches[index], time);
}
void CreateStreamedClipMemory(const StreamedClip& clip, StreamedClipMemory& mem, memory::Allocator& alloc)
{
SETPROFILERLABEL(StreamedClipMemory);
mem.caches = alloc.ConstructArray<StreamedCacheItem>(clip.curveCount);
mem.cacheCount = clip.curveCount;
RewindCache(mem);
}
void DestroyStreamedClipMemory (StreamedClipMemory& memory, memory::Allocator& alloc)
{
alloc.Deallocate(memory.caches);
}
void DestroyStreamedClip (StreamedClip& clip, memory::Allocator& alloc)
{
alloc.Deallocate(clip.data);
}
}
}
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