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- optimize PolyTriangleDrawer::clipedge

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- remove slow calls to roundf in the triangle setup functions
This commit is contained in:
Magnus Norddahl 2017-03-24 13:04:02 +01:00
commit bc8a4474d5
3 changed files with 124 additions and 47 deletions
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30
src/polyrenderer/drawers/screen_triangle.cpp
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@ -58,6 +58,7 @@ void ScreenTriangle::SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadDa
TriPartialBlock * RESTRICT partial = thread->PartialBlocks;
// 28.4 fixed-point coordinates
#if NO_SSE
const int Y1 = (int)round(16.0f * v1.y);
const int Y2 = (int)round(16.0f * v2.y);
const int Y3 = (int)round(16.0f * v3.y);
@ -65,6 +66,20 @@ void ScreenTriangle::SetupNormal(const TriDrawTriangleArgs *args, WorkerThreadDa
const int X1 = (int)round(16.0f * v1.x);
const int X2 = (int)round(16.0f * v2.x);
const int X3 = (int)round(16.0f * v3.x);
#else
int tempround[4 * 3];
__m128 m16 = _mm_set1_ps(16.0f);
__m128 mhalf = _mm_set1_ps(0.5f);
_mm_storeu_si128((__m128i*)tempround, _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v1), m16), mhalf)));
_mm_storeu_si128((__m128i*)(tempround + 4), _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v2), m16), mhalf)));
_mm_storeu_si128((__m128i*)(tempround + 8), _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v3), m16), mhalf)));
const int X1 = tempround[0];
const int X2 = tempround[4];
const int X3 = tempround[8];
const int Y1 = tempround[1];
const int Y2 = tempround[5];
const int Y3 = tempround[9];
#endif
// Deltas
const int DX12 = X1 - X2;
@ -304,6 +319,7 @@ void ScreenTriangle::SetupSubsector(const TriDrawTriangleArgs *args, WorkerThrea
TriPartialBlock * RESTRICT partial = thread->PartialBlocks;
// 28.4 fixed-point coordinates
#if NO_SSE
const int Y1 = (int)round(16.0f * v1.y);
const int Y2 = (int)round(16.0f * v2.y);
const int Y3 = (int)round(16.0f * v3.y);
@ -311,6 +327,20 @@ void ScreenTriangle::SetupSubsector(const TriDrawTriangleArgs *args, WorkerThrea
const int X1 = (int)round(16.0f * v1.x);
const int X2 = (int)round(16.0f * v2.x);
const int X3 = (int)round(16.0f * v3.x);
#else
int tempround[4 * 3];
__m128 m16 = _mm_set1_ps(16.0f);
__m128 mhalf = _mm_set1_ps(0.5f);
_mm_storeu_si128((__m128i*)tempround, _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v1), m16), mhalf)));
_mm_storeu_si128((__m128i*)(tempround + 4), _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v2), m16), mhalf)));
_mm_storeu_si128((__m128i*)(tempround + 8), _mm_cvtps_epi32(_mm_add_ps(_mm_mul_ps(_mm_loadu_ps((const float*)&v3), m16), mhalf)));
const int X1 = tempround[0];
const int X2 = tempround[4];
const int X3 = tempround[8];
const int Y1 = tempround[1];
const int Y2 = tempround[5];
const int Y3 = tempround[9];
#endif
// Deltas
const int DX12 = X1 - X2;