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annotate TaskManager/Test/test_render/spe/DrawSpan.cpp @ 128:776eca0daa02

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texture load use hash table
author gongo@charles.cr.ie.u-ryukyu.ac.jp
date Tue, 25 Nov 2008 15:52:28 +0900
parents 7635f223fc7d
children 805d27efafd8
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1 #include <stdlib.h>
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2 #include <string.h>
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3 #include "DrawSpan.h"
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4 #include "polygon_pack.h"
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5 #include "SpanPack.h"
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6 #include "texture.h"
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7 #include "viewer_types.h"
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8
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9 #define SPAN_PACK_LOAD 0
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10 #define TEX_LOAD 1
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11
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12 SchedDefineTask(DrawSpan);
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13
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14 static const int hashsize = 263;
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15
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16 static TilePtr hash_table[hashsize] = {NULL};
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17
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18 unsigned short PRIME[8] = {
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19 0x002, 0x065, 0x0c7, 0x133, 0x191, 0x1f3, 0x259, 0x2bd,
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20 };
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21
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22 static TileListPtr tileList;
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23
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24 static int
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25 hash(uint32 data)
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26 {
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27 int value = 0;
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28 int n = 0;
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29 int key;
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30
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31 for (int i = 0; i < 8; i ++) {
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32 key = data & 0xf;
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33 value += key * PRIME[n++];
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34 data >>= 4;
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35 }
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36
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37 return value % hashsize;
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38 }
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39
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40 static int
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41 put(void *key, TilePtr data)
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42 {
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43 int hashval = hash((uint32)key);
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44
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45 for (int i = 0; i < hashsize/2; i++) {
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46 int index = (hashval + i*i)%hashsize;
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47
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48 if (hash_table[index] == 0) {
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49 hash_table[index] = data;
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50 return index;
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51 }
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52 }
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53
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54 return -1;
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55 }
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56
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57 static TilePtr
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58 get(void *key)
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59 {
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60 int hashval = hash((uint32)key);
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61
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62 for (int i = 0; i < hashsize/2; i++) {
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63 int index = (hashval + i*i)%hashsize;
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64
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65 if (hash_table[index]->texture_addr == key) {
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66 return hash_table[index];
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67 }
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68 }
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69
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70 return NULL;
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71 }
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72
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73 void
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74 DrawSpan::linebuf_init(int *buf, int x, int rgb)
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75 {
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76 for (int i = 0; i < x; i++) {
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77 buf[i] = rgb;
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78 }
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79 }
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80
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81 float*
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82 DrawSpan::zRow_init(int w, int h)
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83 {
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84 float *zRow = NULL;
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85 float z = 65535.0f;
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86 int length = w*h;
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87
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88 zRow = (float*)smanager->allocate(sizeof(float)*length);
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89
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90 for (int i = 0; i < length; i++) {
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91 zRow[i] = z;
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92 }
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93
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94 return zRow;
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95 }
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96
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97
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98 char*
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99 DrawSpan::get_pixel(int tx, int ty, void *texture_image)
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100 {
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101 #if 0
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102 return (char*)texture_image+(3*((128)*ty+tx));
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103 #else
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104 return (char*)texture_image+(4*((8)*ty+tx));
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105 #endif
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106 }
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107
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108 Uint32
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109 DrawSpan::get_rgb(int tx, int ty, void *texture)
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110 {
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111 Uint8 red, green, blue, alpha;
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112
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113 if (tx<0) tx = 0;
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114 if (tex_width-1< tx) tx = tex_width-1 ;
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115 if (ty<0) ty = 0;
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116 if (tex_height-1< ty) ty = tex_height-1 ;
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117
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118 void *texture_addr;
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119
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120 int blockX = tx / 8;
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121 int blockY = ty / 8;
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122 void** addrList = (void**)global_get(TEXTURE2_ID);
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123 TilePtr tile;
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124
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125 texture_addr = addrList[blockX + (tex_width/8)*blockY];
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126
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127 tile = get(texture_addr);
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128 if (tile == NULL) {
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129 if (tileList->size >= MAX_TILE) {
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130 tileList->init();
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131 bzero(hash_table, sizeof(TilePtr)*hashsize);
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132 }
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133
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134 tile = &tileList->tile[tileList->size];
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135 tile->texture_addr = texture_addr;
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136
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137 smanager->dma_load(tile->pixel, (uint32)texture_addr,
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138 sizeof(uint32)*64, TEX_LOAD);
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139
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140 int index = put(tile->texture_addr, tile);
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141 if (index < 0) {
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142 printf("[%p] Can't entry\n", tile);
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143 return 0xff0000;
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144 }
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145
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146 tileList->size++;
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147
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148 smanager->dma_wait(TEX_LOAD);
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149 }
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150
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151 char *p = get_pixel(tx%8, ty%8, tile);
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152
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153 alpha = 255;
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154 red = (Uint8) p[0];
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155 green = (Uint8) p[1];
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156 blue = (Uint8) p[2];
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157
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158 return (red & 0xff) * 0x10000 + (green & 0xff) * 0x100
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159 + (blue & 0xff) + (alpha << 24);
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160 }
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161
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162 int
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163 DrawSpan::run(void *rbuf, void *wbuf)
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164 {
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165 SpanPack *sp = (SpanPack*)smanager->get_input(0);
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166 SpanPack *next_sp =
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167 (SpanPack*)smanager->allocate(sizeof(SpanPack));
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168 SpanPack *free_sp = next_sp; // next_sp の free() 用
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169 SpanPack *tmp_sp = NULL;
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170 Span *span;
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171
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172 tileList = (TileListPtr)smanager->allocate(sizeof(TileList));
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173 tileList->init();
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174
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175 int render_y = sp->info.y_top;
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176 void *texture_image = global_get(TEXTURE_ID);
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177
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178 int rangex_start = get_param(0); // このタスクが担当する x の範囲の始点
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179 int rangex_end = get_param(1); // 終点 (start <= x <= end)
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180 int rangey = get_param(2); // y の範囲 (render_y + rangey - 1)
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181 int rangex = rangex_end - rangex_start + 1;
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182
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183 float *zRow = zRow_init(rangex, rangey);
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184
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185 int **linebuf = (int**)smanager->allocate(sizeof(int*)*rangey);
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186
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187 for (int i = 0; i < rangey; i++) {
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188 linebuf[i] = (int*)smanager->get_output(i);
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189 linebuf_init(linebuf[i], rangex, 0);
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190 }
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191
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192 bzero(hash_table, sizeof(TilePtr)*hashsize);
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193
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194 do {
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195 /**
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196 * SpanPack->next が存在する場合、
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197 * 現在の SpanPack を処理してる間に
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198 * 次の SpanPack の DMA 転送を行う
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199 */
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200 if (sp->next != NULL) {
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201 smanager->dma_load(next_sp, (uint32)sp->next,
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202 sizeof(SpanPack), SPAN_PACK_LOAD);
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203 } else {
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204 next_sp = NULL;
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205 }
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206
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207 for (int t = 0; t < sp->info.size; t++) {
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208 span = &sp->span[t];
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209
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210 int end = span->length_x;
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211 Uint32 rgb = 0x00ff00;
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212 float tex1 = span->tex_x1;
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213 float tex2 = span->tex_x2;
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214 float tey1 = span->tex_y1;
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215 float tey2 = span->tex_y2;
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216 int tex_xpos;
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217 int tex_ypos;
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218 int tex_zpos;
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219 int x = span->x;
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220 int y = span->y;
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221 float z = span->start_z;
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222 float zpos = span->end_z;
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223
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224 // 座標が [0 .. split_screen_w-1] に入るように x,y を -1
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225 int localx = getLocalX(x-1);
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226 int localy = getLocalY(y-1);
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227
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228 if (end == 1) {
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229 if (x < rangex_start || rangex_end < x) {
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230 continue;
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231 }
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232
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233 tex_xpos = (int)((span->tex_height-1) * tex1);
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234 tex_ypos = (int)((span->tex_width-1) * tey1);
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235 tex_zpos = (int)z;
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236
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237 if (zpos < zRow[localx + (rangex * localy)]) {
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238 rgb = get_rgb(tex_xpos, tex_ypos, texture_image);
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239 zRow[localx + (rangex * localy)] = zpos;
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240 linebuf[localy][localx] = rgb;
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241 }
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242 } else {
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243 float tex_x, tex_y, tex_z;
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244 int js = (x < rangex_start) ? rangex_start - x : 0;
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245 int je = (x + end > rangex_end) ? rangex_end - x : end;
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246
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247 for (int j = js; j <= je; j++) {
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248 localx = getLocalX(x-1+j);
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249
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250 tex_x = tex1*(end-1-j)/(end-1) + tex2*j/(end-1);
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251 tex_y = tey1*(end-1-j)/(end-1) + tey2*j/(end-1);
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252 tex_z = z*(end-1-j)/(end-1) + zpos*j/(end-1);
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253 if (tex_x > 1) tex_x = 1;
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254 if (tex_y > 1) tex_y = 1;
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255 tex_xpos = (int)((span->tex_height-1) * tex_x);
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256 tex_ypos = (int)((span->tex_width-1) * tex_y);
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257
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258 if (tex_z < zRow[localx + (rangex*localy)]) {
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259 rgb = get_rgb(tex_xpos, tex_ypos, texture_image);
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260 zRow[localx + (rangex*localy)] = tex_z;
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261 linebuf[localy][localx] = rgb;
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262 }
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263 }
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264 }
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265 }
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266
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267 smanager->dma_wait(SPAN_PACK_LOAD);
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268
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269 tmp_sp = sp;
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270 sp = next_sp;
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271 next_sp = tmp_sp;
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272 } while (sp);
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273
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274 free(free_sp);
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275 free(linebuf);
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276 free(zRow);
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277 free(tileList);
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278
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279 return 0;
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280 }