1 #include "precompiled.h" 2 // 3 // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style license that can be 5 // found in the LICENSE file. 6 // 7 8 // ImageSSE2.cpp: Implements SSE2-based functions of rx::Image class. It's 9 // in a separated file for GCC, which can enable SSE usage only per-file, 10 // not for code blocks that use SSE2 explicitly. 11 12 #include "libGLESv2/Texture.h" 13 #include "libGLESv2/renderer/Image.h" 14 15 namespace rx 16 { 17 18 void Image::loadRGBAUByteDataToBGRASSE2(GLsizei width, GLsizei height, 19 int inputPitch, const void *input, size_t outputPitch, void *output) 20 { 21 const unsigned int *source = NULL; 22 unsigned int *dest = NULL; 23 __m128i brMask = _mm_set1_epi32(0x00ff00ff); 24 25 for (int y = 0; y < height; y++) 26 { 27 source = reinterpret_cast<const unsigned int*>(static_cast<const unsigned char*>(input) + y * inputPitch); 28 dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch); 29 int x = 0; 30 31 // Make output writes aligned 32 for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 15) != 0) && x < width; x++) 33 { 34 unsigned int rgba = source[x]; 35 dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00); 36 } 37 38 for (; x + 3 < width; x += 4) 39 { 40 __m128i sourceData = _mm_loadu_si128(reinterpret_cast<const __m128i*>(&source[x])); 41 // Mask out g and a, which don't change 42 __m128i gaComponents = _mm_andnot_si128(brMask, sourceData); 43 // Mask out b and r 44 __m128i brComponents = _mm_and_si128(sourceData, brMask); 45 // Swap b and r 46 __m128i brSwapped = _mm_shufflehi_epi16(_mm_shufflelo_epi16(brComponents, _MM_SHUFFLE(2, 3, 0, 1)), _MM_SHUFFLE(2, 3, 0, 1)); 47 __m128i result = _mm_or_si128(gaComponents, brSwapped); 48 _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), result); 49 } 50 51 // Perform leftover writes 52 for (; x < width; x++) 53 { 54 unsigned int rgba = source[x]; 55 dest[x] = (_rotl(rgba, 16) & 0x00ff00ff) | (rgba & 0xff00ff00); 56 } 57 } 58 } 59 60 void Image::loadAlphaDataToBGRASSE2(GLsizei width, GLsizei height, 61 int inputPitch, const void *input, size_t outputPitch, void *output) 62 { 63 const unsigned char *source = NULL; 64 unsigned int *dest = NULL; 65 __m128i zeroWide = _mm_setzero_si128(); 66 67 for (int y = 0; y < height; y++) 68 { 69 source = static_cast<const unsigned char*>(input) + y * inputPitch; 70 dest = reinterpret_cast<unsigned int*>(static_cast<unsigned char*>(output) + y * outputPitch); 71 72 int x; 73 // Make output writes aligned 74 for (x = 0; ((reinterpret_cast<intptr_t>(&dest[x]) & 0xF) != 0 && x < width); x++) 75 { 76 dest[x] = static_cast<unsigned int>(source[x]) << 24; 77 } 78 79 for (; x + 7 < width; x += 8) 80 { 81 __m128i sourceData = _mm_loadl_epi64(reinterpret_cast<const __m128i*>(&source[x])); 82 // Interleave each byte to 16bit, make the lower byte to zero 83 sourceData = _mm_unpacklo_epi8(zeroWide, sourceData); 84 // Interleave each 16bit to 32bit, make the lower 16bit to zero 85 __m128i lo = _mm_unpacklo_epi16(zeroWide, sourceData); 86 __m128i hi = _mm_unpackhi_epi16(zeroWide, sourceData); 87 88 _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x]), lo); 89 _mm_store_si128(reinterpret_cast<__m128i*>(&dest[x + 4]), hi); 90 } 91 92 // Handle the remainder 93 for (; x < width; x++) 94 { 95 dest[x] = static_cast<unsigned int>(source[x]) << 24; 96 } 97 } 98 } 99 100 } 101
