diff options
Diffstat (limited to 'src/3rdparty/angle/src/libGLESv2/TextureSSE2.cpp')
-rw-r--r-- | src/3rdparty/angle/src/libGLESv2/TextureSSE2.cpp | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libGLESv2/TextureSSE2.cpp b/src/3rdparty/angle/src/libGLESv2/TextureSSE2.cpp new file mode 100644 index 0000000000..48ea6643bc --- /dev/null +++ b/src/3rdparty/angle/src/libGLESv2/TextureSSE2.cpp @@ -0,0 +1,100 @@ +// +// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// TextureSSE2.cpp: Implements SSE2-based functions of gl::Image class. It's +// in a separated file for GCC, which can enable SSE usage only per-file, +// not for code blocks that use SSE2 explicitly. + +#include "libGLESv2/Texture.h" + +#include <intrin.h> + +namespace gl +{ + +void Image::loadRGBAUByteDataSSE2(GLsizei width, GLsizei height, + int inputPitch, const void *input, size_t outputPitch, void *output) const +{ + const unsigned int *source = NULL; + unsigned int *dest = NULL; + __m128i brMask = _mm_set1_epi32(0x00ff00ff); + + for (int y = 0; y < height; y++) + { + source = reinterpret_cast<const unsigned int*>(static_cast<const unsigned char*>(input) + y * inputPitch); + dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch); + int x = 0; + + // Make output writes aligned + for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 15) != 0) && x < width; x++) + { + unsigned int rgba = source[x]; + dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00); + } + + for (; x + 3 < width; x += 4) + { + __m128i sourceData = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&source[x])); + // Mask out g and a, which don't change + __m128i gaComponents = _mm_andnot_si128(brMask, sourceData); + // Mask out b and r + __m128i brComponents = _mm_and_si128(sourceData, brMask); + // Swap b and r + __m128i brSwapped = _mm_shufflehi_epi16(_mm_shufflelo_epi16(brComponents, _MM_SHUFFLE(2, 3, 0, 1)), _MM_SHUFFLE(2, 3, 0, 1)); + __m128i result = _mm_or_si128(gaComponents, brSwapped); + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), result); + } + + // Perform leftover writes + for (; x < width; x++) + { + unsigned int rgba = source[x]; + dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00); + } + } +} + +void Image::loadAlphaDataSSE2(GLsizei width, GLsizei height, + int inputPitch, const void *input, size_t outputPitch, void *output) const +{ + const unsigned char *source = NULL; + unsigned int *dest = NULL; + __m128i zeroWide = _mm_setzero_si128(); + + for (int y = 0; y < height; y++) + { + source = static_cast<const unsigned char*>(input) + y * inputPitch; + dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch); + + int x; + // Make output writes aligned + for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 0xF) != 0 && x < width); x++) + { + dest[x] = static_cast<unsigned int>(source[x]) << 24; + } + + for (; x + 7 < width; x += 8) + { + __m128i sourceData = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(&source[x])); + // Interleave each byte to 16bit, make the lower byte to zero + sourceData = _mm_unpacklo_epi8(zeroWide, sourceData); + // Interleave each 16bit to 32bit, make the lower 16bit to zero + __m128i lo = _mm_unpacklo_epi16(zeroWide, sourceData); + __m128i hi = _mm_unpackhi_epi16(zeroWide, sourceData); + + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), lo); + _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x + 4]), hi); + } + + // Handle the remainder + for (; x < width; x++) + { + dest[x] = static_cast<unsigned int>(source[x]) << 24; + } + } +} + +} |