blender
/
blender
136
407
Fork 589
Code Issues 6.3k Pull Requests 780 Projects 19 Wiki Activity

ImBuf: optimize IMB_transform #115653

Merged
Aras Pranckevicius merged 15 commits from aras_p/blender:imb_transform_opt into main 2023-12-14 15:10:41 +01:00
Conversation 2 Commits 15 Files Changed 8 +7 -28
1 changed files with 7 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files
Showing only changes of commit 8ffbfa061c - Show all commits

35
source/blender/blenlib/intern/math_interp.c
View File

@ -363,32 +363,6 @@ BLI_INLINE void bilinear_interpolation_fl(const float *float_buffer,
}
}
#if BLI_HAVE_SSE2
static __m128 rgba_uchar_to_simd(const uchar ptr[4])
{
int packed;
memcpy(&packed, ptr, 4);
/* Packed 8 bit values. */
__m128i rgba8 = _mm_cvtsi32_si128(packed);
/* Spread to 16 bit values. */
__m128i rgba16 = _mm_unpacklo_epi8(rgba8, _mm_setzero_si128());
/* Spread to 32 bit values, now each SSE lane has the RGBA value. */
__m128i rgba32 = _mm_unpacklo_epi16(rgba16, _mm_setzero_si128());
return _mm_cvtepi32_ps(rgba32);
}
static void simd_to_rgba_uchar(__m128 rgba, uchar dst[4])
{
/* Four RGBA integers in each lane of SSE. */
__m128i val = _mm_cvttps_epi32(rgba);
/* Pack to 16 bit signed values. */
__m128i rgba16 = _mm_packs_epi32(val, _mm_setzero_si128());
/* Pack to 8 bit values. */
__m128i rgba8 = _mm_packus_epi16(rgba16, _mm_setzero_si128());
/* Store the packed bits into destination. */
_mm_store_ss((float *)dst, _mm_castsi128_ps(rgba8));
}
#endif
void BLI_bilinear_interpolation_char(
const uchar *buffer, uchar *output, int width, int height, float u, float v)
{
@ -468,8 +442,13 @@ void BLI_bilinear_interpolation_char(
__m128 rgba24 = _mm_add_ps(rgba2, rgba4);
__m128 rgba = _mm_add_ps(rgba13, rgba24);
rgba = _mm_add_ps(rgba, _mm_set1_ps(0.5f));
/* Pack and write to destination. */
simd_to_rgba_uchar(rgba, output);
/* Pack and write to destination: pack to 16 bit signed, then to 8 bit
* unsigned, then write resulting 32-bit value. */
__m128i rgba32 = _mm_cvttps_epi32(rgba);
__m128i rgba16 = _mm_packs_epi32(rgba32, _mm_setzero_si128());
__m128i rgba8 = _mm_packus_epi16(rgba16, _mm_setzero_si128());
_mm_store_ss((float *)output, _mm_castsi128_ps(rgba8));
#else
float a, b;