Mercurial > repos > blastem
annotate jag_video.c @ 1526:9bea1a199f15 nuklear_ui
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author | Michael Pavone <pavone@retrodev.com> |
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date | Wed, 07 Feb 2018 19:21:44 -0800 |
parents | 653558f6fa7a |
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1 #include <stdint.h> |
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2 #include <stdlib.h> |
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3 #include <stdio.h> |
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4 #include "jag_video.h" |
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5 #include "jaguar.h" |
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6 #include "render.h" |
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7 |
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8 enum { |
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9 VMODE_CRY, |
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10 VMODE_RGB24, |
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11 VMODE_DIRECT16, |
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12 VMODE_RGB16, |
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13 VMODE_VARIABLE |
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14 }; |
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15 |
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16 #define BIT_TBGEN 1 |
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17 |
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18 char *vmode_names[] = { |
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19 "CRY", |
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20 "RGB24", |
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21 "RGB16", |
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22 "DIRECT16", |
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23 "VARIABLE" |
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24 }; |
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25 |
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26 static uint8_t cry_red[9][16] = { |
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27 {0, 34, 68, 102, 135, 169, 203, 237, 255, 255, 255, 255, 255, 255, 255, 255}, |
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28 {0, 34, 68, 102, 135, 169, 203, 230, 247, 255, 255, 255, 255, 255, 255, 255}, |
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29 {0, 34, 68, 102, 135, 170, 183, 197, 214, 235, 255, 255, 255, 255, 255, 255}, |
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30 {0, 34, 68, 102, 130, 141, 153, 164, 181, 204, 227, 249, 255, 255, 255, 255}, |
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31 {0, 34, 68, 95, 104, 113, 122, 131, 148, 173, 198, 223, 248, 255, 255, 255}, |
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32 {0, 34, 64, 71, 78, 85, 91, 98, 115, 143, 170, 197, 224, 252, 255, 255}, |
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33 {0, 34, 43, 47, 52, 56, 61, 65, 82, 112, 141, 171, 200, 230, 255, 255}, |
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34 {0, 19, 21, 23, 26, 28, 30, 32, 49, 81, 113, 145, 177, 208, 240, 255}, |
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35 {0, 0, 0, 0, 0, 0, 0, 0, 17, 51, 85, 119, 153, 187, 221, 255} |
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36 }; |
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37 |
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38 static uint8_t cry_green[16][8] = { |
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39 {0, 0, 0, 0, 0, 0, 0, 0}, |
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40 {17, 19, 21, 23, 26, 28, 30, 32}, |
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41 {34, 38, 43, 47, 52, 56, 61, 65}, |
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42 {51, 57, 64, 71, 78, 85, 91, 98}, |
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43 {68, 77, 86, 95, 104, 113, 122, 131}, |
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44 {85, 96, 107, 119, 130, 141, 153, 164}, |
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45 {102, 115, 129, 142, 156, 170, 183, 197}, |
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46 {119, 134, 150, 166, 182, 198, 214, 230}, |
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47 {136, 154, 172, 190, 208, 226, 244, 255}, |
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48 {153, 173, 193, 214, 234, 255, 255, 255}, |
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49 {170, 192, 215, 238, 255, 255, 255, 255}, |
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50 {187, 211, 236, 255, 255, 255, 255, 255}, |
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51 {204, 231, 255, 255, 255, 255, 255, 255}, |
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52 {221, 250, 255, 255, 255, 255, 255, 255}, |
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53 {238, 255, 255, 255, 255, 255, 255, 255}, |
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54 {255, 255, 255, 255, 255, 255, 255, 255}, |
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55 }; |
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56 |
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57 static uint32_t table_cry[0x10000]; |
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58 static uint32_t table_rgb[0x10000]; |
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59 static uint32_t table_variable[0x10000]; |
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60 |
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61 static uint32_t cry_to_rgb(uint16_t cry) |
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62 { |
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63 uint32_t y = cry & 0xFF; |
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64 if (y) { |
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65 uint8_t c = cry >> 8 & 0xF; |
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66 uint8_t r = cry >> 12; |
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67 |
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68 uint32_t red = cry_red[c < 7 ? 0 : c - 7][r]; |
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69 uint32_t green = cry_green[c][r < 8 ? r : 15 - r]; |
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70 uint32_t blue = cry_red[c < 7 ? 0 : c - 7][15-r]; |
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71 red = red * y / 255; |
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72 blue = blue * y / 255; |
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73 green = green * y / 255; |
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74 return render_map_color(red, green, blue); |
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75 } else { |
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76 return render_map_color(0, 0, 0); |
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77 } |
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78 } |
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79 |
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80 static uint32_t rgb16_to_rgb(uint16_t rgb) |
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81 { |
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82 return render_map_color( |
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83 rgb >> 8 & 0xF8, |
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84 rgb << 2 & 0xFC, |
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85 rgb >> 4 & 0xF8 |
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86 ); |
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87 } |
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88 |
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89 jag_video *jag_video_init(void) |
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90 { |
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91 static uint8_t table_init_done = 0; |
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92 if (!table_init_done) { |
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93 for (int i = 0; i < 0x10000; i++) |
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94 { |
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95 table_cry[i] = cry_to_rgb(i); |
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96 table_rgb[i] = rgb16_to_rgb(i); |
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97 table_variable[i] = i & 1 ? rgb16_to_rgb(i & 0xFFFE) : cry_to_rgb(i); |
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98 } |
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99 table_init_done = 1; |
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100 } |
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101 return calloc(1, sizeof(jag_video)); |
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102 } |
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103 |
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104 static void copy_16(uint32_t *dst, uint32_t len, uint16_t *linebuffer, uint32_t *table) |
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105 { |
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106 for (; len; len--, dst++, linebuffer++) |
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107 { |
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108 *dst = table[*linebuffer]; |
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109 } |
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110 } |
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111 |
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112 static void copy_linebuffer(jag_video *context, uint16_t *linebuffer) |
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113 { |
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114 if (!context->output) { |
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115 return; |
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116 } |
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117 uint32_t *dst = context->output; |
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118 uint32_t len; |
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119 if (context->regs[VID_HCOUNT] == context->regs[VID_HDISP_BEGIN1]) { |
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120 if ( |
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121 context->regs[VID_HDISP_BEGIN2] == context->regs[VID_HDISP_BEGIN1] |
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122 || context->regs[VID_HDISP_BEGIN2] > (context->regs[VID_HPERIOD] | 0x400) |
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123 ) { |
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124 //only one line buffer per line, so copy the previous line in its entirety |
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125 len = context->regs[VID_HDISP_END] - 0x400 + context->regs[VID_HPERIOD] - context->regs[VID_HDISP_BEGIN1] + 2; |
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126 } else { |
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127 //copy the second half of the previous line |
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128 if (context->regs[VID_HDISP_BEGIN2] & 0x400) { |
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129 //BEGIN2 is after the HCOUNT jump |
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130 dst += context->regs[VID_HPERIOD] - context->regs[VID_HDISP_BEGIN1] |
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131 + context->regs[VID_HDISP_BEGIN2] - 0x400 + 1; |
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132 len = context->regs[VID_HDISP_END] - context->regs[VID_HDISP_BEGIN2] + 1; |
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133 } else { |
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134 //BEGIN2 is before the HCOUNT jump |
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135 dst += context->regs[VID_HDISP_BEGIN2] - context->regs[VID_HDISP_BEGIN1]; |
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136 len = context->regs[VID_HDISP_END] + context->regs[VID_HPERIOD] - context->regs[VID_HDISP_BEGIN2] + 2; |
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137 } |
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138 } |
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139 context->output += context->output_pitch / sizeof(uint32_t); |
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140 } else { |
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141 //copy the first half of the current line |
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142 if (context->regs[VID_HDISP_BEGIN2] & 0x400) { |
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143 //BEGIN2 is after the HCOUNT jump |
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144 len = context->regs[VID_HDISP_BEGIN2] - 0x400 + context->regs[VID_HPERIOD] - context->regs[VID_HDISP_BEGIN1] + 1; |
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145 } else { |
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146 //BEGIN2 is before the HCOUNT jump |
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147 len = context->regs[VID_HDISP_BEGIN2] - context->regs[VID_HDISP_BEGIN1]; |
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148 } |
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149 } |
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150 len /= context->pclock_div; |
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151 switch (context->mode) |
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152 { |
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153 case VMODE_CRY: |
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154 copy_16(dst, len, linebuffer, table_cry); |
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155 break; |
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156 case VMODE_RGB24: |
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157 //TODO: Implement me |
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158 break; |
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159 case VMODE_DIRECT16: |
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160 //TODO: Implement this once I better understand what would happen on hardware with composite output |
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161 break; |
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162 case VMODE_RGB16: |
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163 copy_16(dst, len, linebuffer, table_rgb); |
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164 break; |
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165 case VMODE_VARIABLE: |
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166 copy_16(dst, len, linebuffer, table_variable); |
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167 break; |
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168 } |
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169 } |
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170 |
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171 enum { |
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172 OBJ_IDLE, |
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173 OBJ_FETCH_DESC1, |
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174 OBJ_FETCH_DESC2, |
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175 OBJ_FETCH_DESC3, |
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176 OBJ_PROCESS, |
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177 OBJ_HEIGHT_WB, |
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178 OBJ_REMAINDER_WB, |
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179 OBJ_GPU_WAIT |
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180 }; |
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181 |
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182 enum { |
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183 OBJ_BITMAP, |
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184 OBJ_SCALED, |
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185 OBJ_GPU, |
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186 OBJ_BRANCH, |
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187 OBJ_STOP |
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188 }; |
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189 |
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190 uint32_t jag_cycles_to_halfline(jag_video *context, uint32_t target) |
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191 { |
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192 uint32_t cycles = context->regs[VID_HPERIOD] - (context->regs[VID_HCOUNT] & 0x3FF); |
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193 uint32_t num_lines; |
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194 if (context->regs[VID_VCOUNT] < target) { |
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195 num_lines = target - 1 - context->regs[VID_VCOUNT]; |
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196 } else { |
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197 num_lines = target + context->regs[VID_VPERIOD] - context->regs[VID_VCOUNT]; |
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198 } |
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199 cycles += num_lines * context->regs[VID_HPERIOD]; |
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200 return cycles; |
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201 } |
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202 |
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203 uint32_t jag_next_vid_interrupt(jag_video *context) |
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204 { |
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205 if (context->regs[VID_VINT] > context->regs[VID_VPERIOD]) { |
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206 return 0xFFFFFFF; |
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207 } |
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208 return context->cycles + jag_cycles_to_halfline(context, context->regs[VID_VINT]); |
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209 } |
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210 |
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211 void op_run(jag_video *context) |
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212 { |
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213 while (context->op.cycles < context->cycles) |
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214 { |
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215 switch (context->op.state) |
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216 { |
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217 case OBJ_IDLE: |
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218 case OBJ_GPU_WAIT: |
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219 context->op.cycles = context->cycles; |
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220 break; |
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221 case OBJ_FETCH_DESC1: { |
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222 uint32_t address = context->regs[VID_OBJLIST1] | context->regs[VID_OBJLIST2] << 16; |
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223 uint64_t val = jag_read_phrase(context->system, address, &context->op.cycles); |
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224 address += 8; |
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225 |
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226 context->regs[VID_OBJ0] = val >> 48; |
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227 context->regs[VID_OBJ1] = val >> 32; |
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228 context->regs[VID_OBJ2] = val >> 16; |
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229 context->regs[VID_OBJ3] = val; |
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230 context->op.type = val & 7; |
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231 context->op.has_prefetch = 0; |
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232 uint16_t ypos = val >> 3 & 0x7FF; |
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233 switch (context->op.type) |
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234 { |
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235 case OBJ_BITMAP: |
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236 case OBJ_SCALED: { |
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237 uint16_t height = val >> 14 & 0x7FF; |
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238 uint32_t link = (address & 0xC00007) | (val >> 21 & 0x3FFFF8); |
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239 if ((ypos == 0x7FF || context->regs[VID_VCOUNT] >= ypos) && height) { |
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240 context->op.state = OBJ_FETCH_DESC2; |
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241 context->op.obj_start = address - 8; |
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242 context->op.ypos = ypos; |
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243 context->op.height = height; |
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|
244 context->op.link = link; |
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|
245 context->op.data_address = val >> 40 & 0xFFFFF8; |
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|
246 context->op.cur_address = context->op.data_address; |
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|
247 } else { |
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|
248 //object is not visible on this line, advance to next object |
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|
249 address = link; |
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changeset
|
250 } |
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Initial stab at implementing the Jaguar object processor
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changeset
|
251 break; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
252 } |
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|
253 case OBJ_GPU: |
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254 context->op.state = OBJ_GPU_WAIT; |
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|
255 break; |
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|
256 case OBJ_BRANCH: { |
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|
257 uint8_t branch; |
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|
258 switch(val >> 14 & 7) |
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|
259 { |
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changeset
|
260 case 0: |
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|
261 branch = ypos == context->regs[VID_VCOUNT] || ypos == 0x7FF; |
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changeset
|
262 break; |
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changeset
|
263 case 1: |
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changeset
|
264 branch = ypos > context->regs[VID_VCOUNT]; |
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|
265 break; |
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|
266 case 2: |
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267 branch = ypos < context->regs[VID_VCOUNT]; |
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|
268 break; |
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changeset
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269 case 3: |
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270 branch = context->regs[VID_OBJFLAG] & 1; |
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|
271 break; |
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272 case 4: |
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273 branch = (context->regs[VID_HCOUNT] & 0x400) != 0; |
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changeset
|
274 break; |
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changeset
|
275 default: |
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changeset
|
276 branch = 0; |
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|
277 fprintf(stderr, "Invalid branch CC type %d in object at %X\n", (int)(val >> 14 & 7), address-8); |
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|
278 break; |
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changeset
|
279 } |
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|
280 if (branch) { |
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281 address &= 0xC00007; |
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changeset
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282 address |= val >> 21 & 0x3FFFF8; |
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|
283 } |
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changeset
|
284 } |
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changeset
|
285 case OBJ_STOP: |
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|
286 //TODO: trigger interrupt |
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287 context->op.state = OBJ_IDLE; |
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Initial stab at implementing the Jaguar object processor
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changeset
|
288 break; |
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Initial stab at implementing the Jaguar object processor
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changeset
|
289 } |
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Initial stab at implementing the Jaguar object processor
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changeset
|
290 context->regs[VID_OBJLIST1] = address; |
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changeset
|
291 context->regs[VID_OBJLIST2] = address >> 16; |
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changeset
|
292 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
293 } |
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Initial stab at implementing the Jaguar object processor
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changeset
|
294 case OBJ_FETCH_DESC2: { |
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changeset
|
295 uint32_t address = context->regs[VID_OBJLIST1] | context->regs[VID_OBJLIST2] << 16; |
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changeset
|
296 uint64_t val = jag_read_phrase(context->system, address, &context->op.cycles); |
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changeset
|
297 address += 8; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
298 |
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Initial stab at implementing the Jaguar object processor
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changeset
|
299 context->op.xpos = val & 0xFFF; |
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changeset
|
300 if (context->op.xpos & 0x800) { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
301 context->op.xpos |= 0xF000; |
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Initial stab at implementing the Jaguar object processor
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changeset
|
302 } |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
303 context->op.increment = (val >> 15 & 0x7) * 8; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
304 context->op.bpp = 1 << (val >> 12 & 7); |
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diff
changeset
|
305 if (context->op.bpp == 32) { |
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changeset
|
306 context->op.bpp = 24; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
307 } |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
308 context->op.line_pitch = (val >> 18 & 0x3FF) * 8; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
309 if (context->op.bpp < 8) { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
310 context->op.pal_offset = val >> 37; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
311 if (context->op.bpp == 4) { |
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Initial stab at implementing the Jaguar object processor
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changeset
|
312 context->op.pal_offset &= 0xF0; |
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diff
changeset
|
313 } else if(context->op.bpp == 2) { |
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diff
changeset
|
314 context->op.pal_offset &= 0xFC; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
315 } else { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
316 context->op.pal_offset &= 0xFE; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
317 } |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
318 } else { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
319 context->op.pal_offset = 0; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
320 } |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
321 context->op.line_phrases = val >> 28 & 0x3FF; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
322 context->op.hflip = (val & (1UL << 45)) != 0; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
323 context->op.addpixels = (val & (1UL << 46)) != 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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diff
changeset
|
324 context->op.transparent = (val & (1UL << 47)) != 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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diff
changeset
|
325 //TODO: do something with RELEASE flag |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
326 context->op.leftclip = val >> 49; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
327 if (context->op.type == OBJ_SCALED) { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
328 context->op.state = OBJ_FETCH_DESC3; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
329 switch (context->op.bpp) |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
330 { |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
331 case 1: |
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parents:
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diff
changeset
|
332 context->op.leftclip &= 0x3F; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
333 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
334 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
335 //documentation isn't clear exactly how this works for higher bpp values |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
336 case 2: |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
337 context->op.leftclip &= 0x3E; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
338 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
339 case 4: |
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parents:
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diff
changeset
|
340 context->op.leftclip &= 0x3C; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
341 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
342 case 8: |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
343 context->op.leftclip &= 0x38; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
344 break; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
345 case 16: |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
346 context->op.leftclip &= 0x30; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
347 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
348 default: |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
349 context->op.leftclip = 0x20; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
350 break; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
351 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
352 } else { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
353 context->op.state = OBJ_PROCESS; |
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Initial stab at implementing the Jaguar object processor
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changeset
|
354 address = context->op.link; |
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Initial stab at implementing the Jaguar object processor
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changeset
|
355 switch (context->op.bpp) |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
356 { |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
357 case 1: |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
358 context->op.leftclip &= 0x3E; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
359 break; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
360 case 2: |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
361 context->op.leftclip &= 0x3C; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
362 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
363 //values for 4bpp and up are sort of a guess |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
364 case 4: |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
365 context->op.leftclip &= 0x38; |
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Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
366 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
367 case 8: |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
368 context->op.leftclip &= 0x30; |
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Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
369 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
370 case 16: |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
371 context->op.leftclip &= 0x20; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
372 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
373 default: |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
374 context->op.leftclip = 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
375 break; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
376 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
377 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
378 if (context->op.xpos < 0) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
379 int16_t pixels_per_phrase = 64 / context->op.bpp; |
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Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
380 int16_t clip = -context->op.xpos / pixels_per_phrase; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
381 int16_t rem = -context->op.xpos % pixels_per_phrase; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
382 if (clip >= context->op.line_phrases) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
383 context->op.line_phrases = 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
384 } else { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
385 context->op.line_phrases -= clip; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
386 context->op.leftclip += rem * context->op.bpp; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
387 if (context->op.leftclip >= 64) { |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
388 context->op.line_phrases--; |
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Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
389 context->op.leftclip -= 64; |
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Initial stab at implementing the Jaguar object processor
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diff
changeset
|
390 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
391 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
392 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
393 } else if (context->op.bpp < 32){ |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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diff
changeset
|
394 context->op.lb_offset = context->op.xpos; |
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Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
395 } else { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
396 context->op.lb_offset = context->op.xpos * 2; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
397 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
398 if (context->op.lb_offset >= LINEBUFFER_WORDS || !context->op.line_phrases) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
399 //ignore objects that are completely offscreen |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
400 //not sure if that's how the hardware does it, but it would make sense |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
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diff
changeset
|
401 context->op.state = OBJ_FETCH_DESC1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
402 address = context->op.link; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
403 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
404 context->regs[VID_OBJLIST1] = address; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
405 context->regs[VID_OBJLIST2] = address >> 16; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
406 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
407 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
408 case OBJ_FETCH_DESC3: { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
409 uint32_t address = context->regs[VID_OBJLIST1] | context->regs[VID_OBJLIST2] << 16; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
410 uint64_t val = jag_read_phrase(context->system, address, &context->op.cycles); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
411 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
412 context->op.state = OBJ_PROCESS; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
413 context->op.hscale = val & 0xFF;; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
414 context->op.hremainder = val & 0xFF; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
415 context->op.vscale = val >> 8 & 0xFF; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
416 context->op.remainder = val >> 16 & 0xFF; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
417 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
418 context->regs[VID_OBJLIST1] = context->op.link; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
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parents:
1089
diff
changeset
|
419 context->regs[VID_OBJLIST2] = context->op.link >> 16; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
420 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
421 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
422 case OBJ_PROCESS: { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
423 uint32_t proc_cycles = 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
424 if (!context->op.has_prefetch && context->op.line_phrases) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
425 context->op.prefetch = jag_read_phrase(context->system, context->op.cur_address, &proc_cycles); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
426 context->op.cur_address += context->op.increment; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
427 context->op.has_prefetch = 1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
428 context->op.line_phrases--; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
429 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
430 if (!proc_cycles) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
431 //run at least one cycle of writes even if we didn't spend any time reading |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
432 proc_cycles = 1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
433 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
434 while (proc_cycles) |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
435 { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
436 if (context->op.im_bits) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
437 uint32_t val = context->op.im_data >> (context->op.im_bits - context->op.bpp); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
438 val &= (1 << context->op.bpp) - 1; |
1098
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
439 if (val || !context->op.transparent) |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
440 { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
441 if (context->op.bpp < 16) { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
442 val = context->clut[val + context->op.pal_offset]; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
443 } |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
444 if (context->op.bpp == 32) { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
445 context->write_line_buffer[context->op.lb_offset++] = val >> 16; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
446 } |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
447 context->write_line_buffer[context->op.lb_offset++] = val; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
448 } else { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
449 context->op.lb_offset += context->op.bpp == 32 ? 2 : 1; |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
450 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
451 if (context->op.type == OBJ_SCALED) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
452 context->op.hremainder -= 0x20; |
1098
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
453 while (context->op.hremainder <= 0 && context->op.im_bits) { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
454 context->op.im_bits -= context->op.bpp; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
455 context->op.hremainder += context->op.hscale; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
456 } |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
457 } else { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
458 context->op.im_bits -= context->op.bpp; |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
459 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
460 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
461 if (context->op.im_bits && context->op.bpp < 32 && context->op.type == OBJ_BITMAP && context->op.lb_offset < LINEBUFFER_WORDS) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
462 uint32_t val = context->op.im_data >> (context->op.im_bits - context->op.bpp); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
463 val &= (1 << context->op.bpp) - 1; |
1098
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
464 if (val || !context->op.transparent) |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
465 { |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
466 val = context->clut[val + context->op.pal_offset]; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
467 context->write_line_buffer[context->op.lb_offset] = val; |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
468 } |
4a726e339d6f
Fix implementation of scaled objects. Implement transparency flag
Michael Pavone <pavone@retrodev.com>
parents:
1097
diff
changeset
|
469 context->op.lb_offset++; |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
470 context->op.im_bits -= context->op.bpp; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
471 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
472 context->op_cycles++; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
473 proc_cycles--; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
474 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
475 if (!context->op.im_bits && context->op.has_prefetch) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
476 context->op.im_data = context->op.prefetch; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
477 context->op.has_prefetch = 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
478 //docs say this is supposed to be a value in pixels |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
479 //but given the "significant" bits part I'm guessing |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
480 //this is actually how many bits are pre-shifted off |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
481 //the first phrase read in a line |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
482 context->op.im_bits = 64 - context->op.leftclip; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
483 context->op.leftclip = 0; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
484 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
485 if (context->op.lb_offset == LINEBUFFER_WORDS || (!context->op.im_bits && !context->op.line_phrases)) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
486 context->op.state = OBJ_HEIGHT_WB; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
487 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
488 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
489 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
490 case OBJ_HEIGHT_WB: { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
491 if (context->op.type == OBJ_BITMAP) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
492 context->op.height--; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
493 context->op.data_address += context->op.line_pitch; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
494 context->op.state = OBJ_FETCH_DESC1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
495 } else { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
496 context->op.remainder -= 0x20; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
497 context->op.state = OBJ_REMAINDER_WB; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
498 while (context->op.height && context->op.remainder <= 0) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
499 context->op.height--; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
500 context->op.remainder += context->op.vscale; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
501 context->op.data_address += context->op.line_pitch; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
502 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
503 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
504 uint64_t val = context->op.type | context->op.ypos << 3 | context->op.height << 14 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
505 | ((uint64_t)context->op.link & 0x3FFFF8) << 21 | ((uint64_t)context->op.data_address) << 40; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
506 context->op.cycles += jag_write_phrase(context->system, context->op.obj_start, val); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
507 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
508 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
509 case OBJ_REMAINDER_WB: { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
510 uint64_t val = context->op.hscale | context->op.vscale << 8 | context->op.remainder << 16; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
511 context->op.cycles += jag_write_phrase(context->system, context->op.obj_start+16, val); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
512 context->op.state = OBJ_FETCH_DESC1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
513 break; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
514 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
515 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
516 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
517 } |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
518 |
1087
6433d4d05934
Added placeholder code for video output hardware/object processor
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
519 void jag_video_run(jag_video *context, uint32_t target_cycle) |
6433d4d05934
Added placeholder code for video output hardware/object processor
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
520 { |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
521 if (context->regs[VID_VMODE] & BIT_TBGEN) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
522 while (context->cycles < target_cycle) |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
523 { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
524 //TODO: Optimize this to not actually increment one step at a time |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
525 if ( |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
526 ( |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
527 context->regs[VID_HCOUNT] == context->regs[VID_HDISP_BEGIN1] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
528 || context->regs[VID_HCOUNT] == context->regs[VID_HDISP_BEGIN2] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
529 ) |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
530 && context->regs[VID_VCOUNT] >= context->regs[VID_VDISP_BEGIN] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
531 && context->regs[VID_VCOUNT] < context->regs[VID_VDISP_END] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
532 ) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
533 //swap linebuffers, render linebuffer to framebuffer and kick off object processor |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
534 if (context->write_line_buffer == context->line_buffer_a) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
535 context->write_line_buffer = context->line_buffer_b; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
536 copy_linebuffer(context, context->line_buffer_a); |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
537 } else { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
538 context->write_line_buffer = context->line_buffer_a; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
539 copy_linebuffer(context, context->line_buffer_b); |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
540 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
541 //clear new write line buffer with background color |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
542 for (int i = 0; i < LINEBUFFER_WORDS; i++) |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
543 { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
544 context->write_line_buffer[i] = context->regs[VID_BGCOLOR]; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
545 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
546 |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
547 //kick off object processor |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
548 context->op.state = OBJ_FETCH_DESC1; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
549 } else if (context->regs[VID_HCOUNT] == context->regs[VID_HDISP_END]) { |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
550 //stob object processor |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
551 context->op.state = OBJ_IDLE; |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
552 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
553 |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
554 context->cycles++; |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
555 op_run(context); |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
556 |
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
557 //advance counters |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
558 if ( |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
559 !context->output |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
560 && context->regs[VID_VCOUNT] == context->regs[VID_VDISP_BEGIN] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
561 && context->regs[VID_HCOUNT] == context->regs[VID_HDISP_BEGIN1] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
562 ) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
563 context->output = render_get_framebuffer(FRAMEBUFFER_ODD, &context->output_pitch); |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
564 } else if (context->output && context->regs[VID_VCOUNT] >= context->regs[VID_VDISP_END]) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
565 int width = (context->regs[VID_HPERIOD] - context->regs[VID_HDISP_BEGIN1] |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
566 + context->regs[VID_HDISP_END] - 1024 + 2) / context->pclock_div; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
567 render_framebuffer_updated(FRAMEBUFFER_ODD, width); |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
568 context->output = NULL; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
569 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
570 |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
571 if ((context->regs[VID_HCOUNT] & 0x3FF) == context->regs[VID_HPERIOD]) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
572 //reset bottom 10 bits to zero, flip the 11th bit which represents which half of the line we're on |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
573 context->regs[VID_HCOUNT] = (context->regs[VID_HCOUNT] & 0x400) ^ 0x400; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
574 //increment half-line counter |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
575 if (context->regs[VID_VCOUNT] == context->regs[VID_VPERIOD]) { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
576 context->regs[VID_VCOUNT] = 0; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
577 } else { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
578 context->regs[VID_VCOUNT]++; |
1097
faa3a4617f62
Get Jaguar video interrupt working
Michael Pavone <pavone@retrodev.com>
parents:
1090
diff
changeset
|
579 if (context->regs[VID_VCOUNT] == context->regs[VID_VINT]) { |
faa3a4617f62
Get Jaguar video interrupt working
Michael Pavone <pavone@retrodev.com>
parents:
1090
diff
changeset
|
580 context->cpu_int_pending |= BIT_CPU_VID_INT_ENABLED; |
faa3a4617f62
Get Jaguar video interrupt working
Michael Pavone <pavone@retrodev.com>
parents:
1090
diff
changeset
|
581 } |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
582 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
583 } else { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
584 context->regs[VID_HCOUNT]++; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
585 } |
1090
a68274a25e2f
Initial stab at implementing the Jaguar object processor
Michael Pavone <pavone@retrodev.com>
parents:
1089
diff
changeset
|
586 |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
587 } |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
588 } else { |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
589 context->cycles = target_cycle; |
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
|
590 } |
1087
6433d4d05934
Added placeholder code for video output hardware/object processor
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
591 } |
1088
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
592 |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
593 static uint8_t is_reg_writeable(uint32_t address) |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
594 { |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
595 return address < VID_HLPEN || address >= VID_OBJLIST1; |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
596 } |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
597 |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
598 void jag_video_reg_write(jag_video *context, uint32_t address, uint16_t value) |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
599 { |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
600 uint32_t reg = (address >> 1 & 0x7F) - 2; |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
601 if (reg < JAG_VIDEO_REGS && is_reg_writeable(reg)) { |
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parents:
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diff
changeset
|
602 context->regs[reg] = value; |
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603 if (reg == VID_VMODE) { |
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parents:
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changeset
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604 context->pclock_div = (value >> 9 & 7) + 1; |
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605 context->pclock_counter = 0; |
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606 if (value & 0x10) { |
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607 context->mode = VMODE_VARIABLE; |
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608 } else { |
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609 context->mode = value >> 1 & 3; |
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Michael Pavone <pavone@retrodev.com>
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610 } |
1089
87597a048d38
Initial implementation of video output hardware
Michael Pavone <pavone@retrodev.com>
parents:
1088
diff
changeset
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611 printf("Mode %s, pixel clock divider: %d, time base generation: %s\n", vmode_names[context->mode], context->pclock_div, value & BIT_TBGEN ? "enabled" : "disabled"); |
1088
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Basic handling of video/object processor register writes
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612 } |
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Basic handling of video/object processor register writes
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613 switch (reg) |
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614 { |
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615 case VID_OBJLIST1: |
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616 printf("Object List Pointer 1: %X\n", value); |
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617 break; |
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618 case VID_OBJLIST2: |
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619 printf("Object List Pointer 2: %X\n", value); |
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parents:
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620 break; |
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621 case VID_HPERIOD: |
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622 printf("Horizontal period: %d\n", value & 0x3FF); |
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Basic handling of video/object processor register writes
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parents:
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diff
changeset
|
623 break; |
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624 case VID_HBLANK_BEGIN: |
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625 printf("horizontal blanking begin: %d\n", value & 0x7FF); |
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626 break; |
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627 case VID_HBLANK_END: |
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628 printf("horizontal blanking end: %d\n", value & 0x7FF); |
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diff
changeset
|
629 break; |
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630 case VID_HSYNC: |
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parents:
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631 printf("horizontal sync start: %d\n", value & 0x7FF); |
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632 break; |
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633 case VID_HDISP_BEGIN1: |
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634 printf("horizontal display begin 1: %d\n", value & 0x7FF); |
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diff
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|
635 break; |
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parents:
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diff
changeset
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636 case VID_HDISP_BEGIN2: |
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637 printf("horizontal display begin 2: %d\n", value & 0x7FF); |
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diff
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638 break; |
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Basic handling of video/object processor register writes
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diff
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|
639 case VID_HDISP_END: |
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|
640 printf("horizontal display end: %d\n", value & 0x7FF); |
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parents:
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diff
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|
641 break; |
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parents:
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diff
changeset
|
642 case VID_VPERIOD: |
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643 printf("Vertical period: %d\n", value & 0x7FF); |
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Basic handling of video/object processor register writes
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diff
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|
644 break; |
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diff
changeset
|
645 case VID_VBLANK_BEGIN: |
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646 printf("vertical blanking begin: %d\n", value & 0x7FF); |
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Basic handling of video/object processor register writes
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parents:
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diff
changeset
|
647 break; |
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parents:
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648 case VID_VBLANK_END: |
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649 printf("vertical blanking end: %d\n", value & 0x7FF); |
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Basic handling of video/object processor register writes
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diff
changeset
|
650 break; |
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parents:
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diff
changeset
|
651 case VID_VSYNC: |
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diff
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|
652 printf("vertical sync start: %d\n", value & 0x7FF); |
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Basic handling of video/object processor register writes
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parents:
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diff
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|
653 break; |
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parents:
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diff
changeset
|
654 case VID_VDISP_BEGIN: |
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diff
changeset
|
655 printf("vertical display begin: %d\n", value & 0x7FF); |
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parents:
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diff
changeset
|
656 break; |
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diff
changeset
|
657 case VID_VDISP_END: |
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parents:
1087
diff
changeset
|
658 printf("vertical display end: %d\n", value & 0x7FF); |
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Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
659 break; |
c0a026e974f4
Basic handling of video/object processor register writes
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parents:
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diff
changeset
|
660 } |
c0a026e974f4
Basic handling of video/object processor register writes
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parents:
1087
diff
changeset
|
661 } else { |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
662 fprintf(stderr, "Write to invalid video/object processor register %X:%X\n", address, value); |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
663 } |
c0a026e974f4
Basic handling of video/object processor register writes
Michael Pavone <pavone@retrodev.com>
parents:
1087
diff
changeset
|
664 } |