1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/renderer/ImageSSE2.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,100 @@
1.4 +#include "precompiled.h"
1.5 +//
1.6 +// Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
1.7 +// Use of this source code is governed by a BSD-style license that can be
1.8 +// found in the LICENSE file.
1.9 +//
1.10 +
1.11 +// ImageSSE2.cpp: Implements SSE2-based functions of rx::Image class. It's
1.12 +// in a separated file for GCC, which can enable SSE usage only per-file,
1.13 +// not for code blocks that use SSE2 explicitly.
1.14 +
1.15 +#include "libGLESv2/Texture.h"
1.16 +#include "libGLESv2/renderer/Image.h"
1.17 +
1.18 +namespace rx
1.19 +{
1.20 +
1.21 +void Image::loadRGBAUByteDataToBGRASSE2(GLsizei width, GLsizei height,
1.22 + int inputPitch, const void *input, size_t outputPitch, void *output)
1.23 +{
1.24 + const unsigned int *source = NULL;
1.25 + unsigned int *dest = NULL;
1.26 + __m128i brMask = _mm_set1_epi32(0x00ff00ff);
1.27 +
1.28 + for (int y = 0; y < height; y++)
1.29 + {
1.30 + source = reinterpret_cast<const unsigned int*>(static_cast<const unsigned char*>(input) + y * inputPitch);
1.31 + dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch);
1.32 + int x = 0;
1.33 +
1.34 + // Make output writes aligned
1.35 + for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 15) != 0) && x < width; x++)
1.36 + {
1.37 + unsigned int rgba = source[x];
1.38 + dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00);
1.39 + }
1.40 +
1.41 + for (; x + 3 < width; x += 4)
1.42 + {
1.43 + __m128i sourceData = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&source[x]));
1.44 + // Mask out g and a, which don't change
1.45 + __m128i gaComponents = _mm_andnot_si128(brMask, sourceData);
1.46 + // Mask out b and r
1.47 + __m128i brComponents = _mm_and_si128(sourceData, brMask);
1.48 + // Swap b and r
1.49 + __m128i brSwapped = _mm_shufflehi_epi16(_mm_shufflelo_epi16(brComponents, _MM_SHUFFLE(2, 3, 0, 1)), _MM_SHUFFLE(2, 3, 0, 1));
1.50 + __m128i result = _mm_or_si128(gaComponents, brSwapped);
1.51 + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), result);
1.52 + }
1.53 +
1.54 + // Perform leftover writes
1.55 + for (; x < width; x++)
1.56 + {
1.57 + unsigned int rgba = source[x];
1.58 + dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00);
1.59 + }
1.60 + }
1.61 +}
1.62 +
1.63 +void Image::loadAlphaDataToBGRASSE2(GLsizei width, GLsizei height,
1.64 + int inputPitch, const void *input, size_t outputPitch, void *output)
1.65 +{
1.66 + const unsigned char *source = NULL;
1.67 + unsigned int *dest = NULL;
1.68 + __m128i zeroWide = _mm_setzero_si128();
1.69 +
1.70 + for (int y = 0; y < height; y++)
1.71 + {
1.72 + source = static_cast<const unsigned char*>(input) + y * inputPitch;
1.73 + dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch);
1.74 +
1.75 + int x;
1.76 + // Make output writes aligned
1.77 + for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 0xF) != 0 && x < width); x++)
1.78 + {
1.79 + dest[x] = static_cast<unsigned int>(source[x]) << 24;
1.80 + }
1.81 +
1.82 + for (; x + 7 < width; x += 8)
1.83 + {
1.84 + __m128i sourceData = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(&source[x]));
1.85 + // Interleave each byte to 16bit, make the lower byte to zero
1.86 + sourceData = _mm_unpacklo_epi8(zeroWide, sourceData);
1.87 + // Interleave each 16bit to 32bit, make the lower 16bit to zero
1.88 + __m128i lo = _mm_unpacklo_epi16(zeroWide, sourceData);
1.89 + __m128i hi = _mm_unpackhi_epi16(zeroWide, sourceData);
1.90 +
1.91 + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), lo);
1.92 + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x + 4]), hi);
1.93 + }
1.94 +
1.95 + // Handle the remainder
1.96 + for (; x < width; x++)
1.97 + {
1.98 + dest[x] = static_cast<unsigned int>(source[x]) << 24;
1.99 + }
1.100 + }
1.101 +}
1.102 +
1.103 +}
