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annotate src/video/SDL_blit_copy.c @ 2825:620a91b6d263

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Date: Tue, 02 Dec 2008 23:38:26 +0100 From: Couriersud Subject: Re: SDL: Keyboard layout unknown I have attached a diff which will add an additional keyboard layout to the x11 driver. The issue arose, when I moved to ubuntu intrepid. I was only able to map the keys available on my keyboard. The differences to the existing keyboard was the mapping of HOME,UP,DOWN and some other keys. Now only one issue remains. Dead keys (e.g. ^, ` ') on european keyboards do not generate a "scancode" event. Just a text event when the key is composed (e.g. ?? ?? ??).
author Sam Lantinga <slouken@libsdl.org>
date Wed, 03 Dec 2008 04:32:24 +0000
parents cc15254e44b6
children cd4a49d5c1ba
rev   line source
2247
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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
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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
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8 version 2.1 of the License, or (at your option) any later version.
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9
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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
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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
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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
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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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26 #include "SDL_blit_copy.h"
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27
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28
2253
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29 #ifdef __SSE__
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30 /* This assumes 16-byte aligned src and dst */
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31 static __inline__ void
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32 SDL_memcpySSE(Uint8 * dst, const Uint8 * src, int len)
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33 {
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34 int i;
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35
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36 __m128 values[4];
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37 for (i = len / 64; i--;) {
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38 _mm_prefetch(src, _MM_HINT_NTA);
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39 values[0] = *(__m128 *) (src + 0);
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40 values[1] = *(__m128 *) (src + 16);
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41 values[2] = *(__m128 *) (src + 32);
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42 values[3] = *(__m128 *) (src + 48);
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43 _mm_stream_ps((float *) (dst + 0), values[0]);
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44 _mm_stream_ps((float *) (dst + 16), values[1]);
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45 _mm_stream_ps((float *) (dst + 32), values[2]);
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46 _mm_stream_ps((float *) (dst + 48), values[3]);
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47 src += 64;
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48 dst += 64;
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49 }
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50
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51 if (len & 63)
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52 SDL_memcpy(dst, src, len & 63);
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53 }
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54 #endif /* __SSE__ */
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55
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56 #ifdef __MMX__
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57 #ifdef _MSC_VER
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58 #pragma warning(disable:4799)
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59 #endif
2253
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60 /* This assumes 8-byte aligned src and dst */
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61 static __inline__ void
2248
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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62 SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
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63 {
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64 int i;
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65
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66 __m64 values[8];
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67 for (i = len / 64; i--;) {
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68 _mm_prefetch(src, _MM_HINT_NTA);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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69 values[0] = *(__m64 *) (src + 0);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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70 values[1] = *(__m64 *) (src + 8);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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71 values[2] = *(__m64 *) (src + 16);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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72 values[3] = *(__m64 *) (src + 24);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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73 values[4] = *(__m64 *) (src + 32);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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74 values[5] = *(__m64 *) (src + 40);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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75 values[6] = *(__m64 *) (src + 48);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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76 values[7] = *(__m64 *) (src + 56);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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77 _mm_stream_pi((__m64 *) (dst + 0), values[0]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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78 _mm_stream_pi((__m64 *) (dst + 8), values[1]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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79 _mm_stream_pi((__m64 *) (dst + 16), values[2]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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80 _mm_stream_pi((__m64 *) (dst + 24), values[3]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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81 _mm_stream_pi((__m64 *) (dst + 32), values[4]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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82 _mm_stream_pi((__m64 *) (dst + 40), values[5]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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83 _mm_stream_pi((__m64 *) (dst + 48), values[6]);
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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84 _mm_stream_pi((__m64 *) (dst + 56), values[7]);
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85 src += 64;
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86 dst += 64;
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87 }
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88
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89 if (len & 63)
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90 SDL_memcpy(dst, src, len & 63);
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91 }
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92 #endif /* __MMX__ */
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93
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94 void
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95 SDL_BlitCopy(SDL_BlitInfo * info)
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96 {
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97 Uint8 *src, *dst;
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98 int w, h;
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99 int srcskip, dstskip;
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100
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c785543d1843 Okay, still some bugs, but everything builds again...
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101 w = info->dst_w * info->dst_fmt->BytesPerPixel;
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bee005ace1bf Work in progress: merging new texture features into SDL blit system
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102 h = info->dst_h;
bee005ace1bf Work in progress: merging new texture features into SDL blit system
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103 src = info->src;
bee005ace1bf Work in progress: merging new texture features into SDL blit system
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104 dst = info->dst;
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c785543d1843 Okay, still some bugs, but everything builds again...
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105 srcskip = info->src_pitch;
c785543d1843 Okay, still some bugs, but everything builds again...
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106 dstskip = info->dst_pitch;
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107
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108 #ifdef __SSE__
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109 if (SDL_HasSSE() && !((uintptr_t) src & 15) && !((uintptr_t) dst & 15)) {
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110 while (h--) {
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111 SDL_memcpySSE(dst, src, w);
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112 src += srcskip;
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113 dst += dstskip;
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114 }
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115 return;
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116 }
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117 #endif
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118
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119 #ifdef __MMX__
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120 if (SDL_HasMMX() && !((uintptr_t) src & 7) && !((uintptr_t) dst & 7)) {
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121 while (h--) {
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122 SDL_memcpyMMX(dst, src, w);
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123 src += srcskip;
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124 dst += dstskip;
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125 }
2248
5cd2a2293cf0 Okay, I figured out the intrinsics for SIMD memcpy
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126 _mm_empty();
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127 return;
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128 }
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129 #endif
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130
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131 while (h--) {
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132 SDL_memcpy(dst, src, w);
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133 src += srcskip;
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134 dst += dstskip;
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135 }
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136 }
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137
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138 void
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139 SDL_BlitCopyOverlap(SDL_BlitInfo * info)
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140 {
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141 Uint8 *src, *dst;
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142 int w, h;
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143 int skip;
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144
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145 w = info->dst_w * info->dst_fmt->BytesPerPixel;
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146 h = info->dst_h;
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147 src = info->src;
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148 dst = info->dst;
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149 skip = info->src_pitch;
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150 if ((dst < src) || (dst >= (src + h * skip))) {
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151 SDL_BlitCopy(info);
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152 } else {
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153 src += ((h - 1) * skip);
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154 dst += ((h - 1) * skip);
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155 while (h--) {
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156 SDL_revcpy(dst, src, w);
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157 src -= skip;
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158 dst -= skip;
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159 }
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160 }
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161 }
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162
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163 /* vi: set ts=4 sw=4 expandtab: */