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annotate src/video/SDL_blit_copy.c @ 2252:b80e3d57941f

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Removed unnecessary header (SDL_blit.h has SDL_cpuinfo.h)
author Sam Lantinga <slouken@libsdl.org>
date Thu, 16 Aug 2007 06:40:34 +0000
parents e1d228456537
children
rev   line source
2247
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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8 version 2.1 of the License, or (at your option) any later version.
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9
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
93994f65c74c Removed hermes since it's LGPL and not compatible with a commercial license.
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_video.h"
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25 #include "SDL_blit.h"
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5a58b57b6724 Added SSE and MMX optimization for SDL_FillRect()
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26 #include "SDL_blit_copy.h"
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27
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28
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29 #ifdef __MMX__
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30 static __inline__ void
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5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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31 SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
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32 {
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33 int i;
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34
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35 __m64 values[8];
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36 for (i = len / 64; i--;) {
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37 _mm_prefetch(src, _MM_HINT_NTA);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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38 values[0] = *(__m64 *) (src + 0);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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39 values[1] = *(__m64 *) (src + 8);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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40 values[2] = *(__m64 *) (src + 16);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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41 values[3] = *(__m64 *) (src + 24);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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42 values[4] = *(__m64 *) (src + 32);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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43 values[5] = *(__m64 *) (src + 40);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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44 values[6] = *(__m64 *) (src + 48);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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45 values[7] = *(__m64 *) (src + 56);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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46 _mm_stream_pi((__m64 *) (dst + 0), values[0]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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47 _mm_stream_pi((__m64 *) (dst + 8), values[1]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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48 _mm_stream_pi((__m64 *) (dst + 16), values[2]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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49 _mm_stream_pi((__m64 *) (dst + 24), values[3]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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50 _mm_stream_pi((__m64 *) (dst + 32), values[4]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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51 _mm_stream_pi((__m64 *) (dst + 40), values[5]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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52 _mm_stream_pi((__m64 *) (dst + 48), values[6]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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53 _mm_stream_pi((__m64 *) (dst + 56), values[7]);
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54 src += 64;
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55 dst += 64;
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56 }
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57
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58 if (len & 63)
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59 SDL_memcpy(dst, src, len & 63);
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60 }
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61 #endif /* __MMX__ */
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62
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63 #ifdef __SSE__
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64 static __inline__ void
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65 SDL_memcpySSE(Uint8 * dst, const Uint8 * src, int len)
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66 {
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67 int i;
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68
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69 __m128 values[4];
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70 for (i = len / 64; i--;) {
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71 _mm_prefetch(src, _MM_HINT_NTA);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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72 values[0] = *(__m128 *) (src + 0);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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73 values[1] = *(__m128 *) (src + 16);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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74 values[2] = *(__m128 *) (src + 32);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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75 values[3] = *(__m128 *) (src + 48);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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76 _mm_stream_ps((float *) (dst + 0), values[0]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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77 _mm_stream_ps((float *) (dst + 16), values[1]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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78 _mm_stream_ps((float *) (dst + 32), values[2]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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79 _mm_stream_ps((float *) (dst + 48), values[3]);
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80 src += 64;
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81 dst += 64;
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82 }
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5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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83
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84 if (len & 63)
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85 SDL_memcpy(dst, src, len & 63);
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86 }
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87 #endif /* __SSE__ */
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88
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89 void
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90 SDL_BlitCopy(SDL_BlitInfo * info)
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91 {
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92 Uint8 *src, *dst;
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93 int w, h;
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94 int srcskip, dstskip;
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95
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96 w = info->d_width * info->dst->BytesPerPixel;
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97 h = info->d_height;
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98 src = info->s_pixels;
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99 dst = info->d_pixels;
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100 srcskip = w + info->s_skip;
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101 dstskip = w + info->d_skip;
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102
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103 #ifdef __SSE__
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104 if (SDL_HasSSE() && !((uintptr_t) src & 15) && !((uintptr_t) dst & 15)) {
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105 while (h--) {
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106 SDL_memcpySSE(dst, src, w);
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107 src += srcskip;
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108 dst += dstskip;
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109 }
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110 return;
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111 }
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112 #endif
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113
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114 #ifdef __MMX__
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115 if (SDL_HasMMX() && !((uintptr_t) src & 7) && !((uintptr_t) dst & 7)) {
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116 while (h--) {
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117 SDL_memcpyMMX(dst, src, w);
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118 src += srcskip;
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119 dst += dstskip;
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120 }
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121 _mm_empty();
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122 return;
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123 }
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124 #endif
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125
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126 while (h--) {
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127 SDL_memcpy(dst, src, w);
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128 src += srcskip;
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129 dst += dstskip;
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130 }
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131 }
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132
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133 void
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134 SDL_BlitCopyOverlap(SDL_BlitInfo * info)
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135 {
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136 Uint8 *src, *dst;
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137 int w, h;
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138 int skip;
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139
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140 w = info->d_width * info->dst->BytesPerPixel;
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141 h = info->d_height;
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142 src = info->s_pixels;
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143 dst = info->d_pixels;
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144 skip = w + info->s_skip;
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5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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145 if ((dst < src) || (dst >= (src + h * skip))) {
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146 SDL_BlitCopy(info);
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147 } else {
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148 src += ((h - 1) * skip);
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149 dst += ((h - 1) * skip);
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150 while (h--) {
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151 SDL_revcpy(dst, src, w);
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152 src -= skip;
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153 dst -= skip;
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154 }
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155 }
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156 }
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157
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158 /* vi: set ts=4 sw=4 expandtab: */