| 1 | /*************************************************************************** |
| 2 | * Copyright (C) 2010 PCSX4ALL Team * |
| 3 | * Copyright (C) 2010 Unai * |
| 4 | * * |
| 5 | * This program is free software; you can redistribute it and/or modify * |
| 6 | * it under the terms of the GNU General Public License as published by * |
| 7 | * the Free Software Foundation; either version 2 of the License, or * |
| 8 | * (at your option) any later version. * |
| 9 | * * |
| 10 | * This program is distributed in the hope that it will be useful, * |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| 13 | * GNU General Public License for more details. * |
| 14 | * * |
| 15 | * You should have received a copy of the GNU General Public License * |
| 16 | * along with this program; if not, write to the * |
| 17 | * Free Software Foundation, Inc., * |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA. * |
| 19 | ***************************************************************************/ |
| 20 | |
| 21 | /////////////////////////////////////////////////////////////////////////////// |
| 22 | // GPU internal line drawing functions |
| 23 | |
| 24 | #define GPU_DIGITS 16 |
| 25 | #define GPU_DIGITSC (GPU_DIGITS+3) |
| 26 | |
| 27 | INLINE long GPU_DIV(long rs, long rt) |
| 28 | { |
| 29 | return rt ? (rs / rt) : (0); |
| 30 | } |
| 31 | |
| 32 | /////////////////////////////////////////////////////////////////////////////// |
| 33 | void gpuDrawLF(const PD gpuPixelDriver) |
| 34 | { |
| 35 | s32 temp; |
| 36 | s32 xmin, xmax; |
| 37 | s32 ymin, ymax; |
| 38 | s32 x0, x1, dx; |
| 39 | s32 y0, y1, dy; |
| 40 | |
| 41 | x0 = PacketBuffer.S2[2] + DrawingOffset[0]; GPU_TESTRANGE(x0); |
| 42 | y0 = PacketBuffer.S2[3] + DrawingOffset[1]; GPU_TESTRANGE(y0); |
| 43 | x1 = PacketBuffer.S2[4] + DrawingOffset[0]; GPU_TESTRANGE(x1); |
| 44 | y1 = PacketBuffer.S2[5] + DrawingOffset[1]; GPU_TESTRANGE(y1); |
| 45 | |
| 46 | xmin = DrawingArea[0]; xmax = DrawingArea[2]; |
| 47 | ymin = DrawingArea[1]; ymax = DrawingArea[3]; |
| 48 | const u16 pixeldata = GPU_RGB16(PacketBuffer.U4[0]); |
| 49 | |
| 50 | dy = (y1 - y0); |
| 51 | if (dy < 0) dy = -dy; |
| 52 | dx = (x1 - x0); |
| 53 | if (dx < 0) dx = -dx; |
| 54 | if (dx > dy) { |
| 55 | if (x0 > x1) { |
| 56 | GPU_SWAP(x0, x1, temp); |
| 57 | GPU_SWAP(y0, y1, temp); |
| 58 | } |
| 59 | y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx); |
| 60 | y0 <<= GPU_DIGITS; |
| 61 | temp = xmin - x0; |
| 62 | if (temp > 0) { |
| 63 | x0 = xmin; |
| 64 | y0 += (y1 * temp); |
| 65 | } |
| 66 | if (x1 > xmax) x1 = xmax; |
| 67 | x1 -= x0; |
| 68 | if (x1 < 0) x1 = 0; |
| 69 | |
| 70 | const int li=linesInterlace; |
| 71 | for (; x1; x1--) { |
| 72 | temp = y0 >> GPU_DIGITS; |
| 73 | if( 0 == (temp&li) ) { |
| 74 | if ((u32) (temp - ymin) < (u32) (ymax - ymin)) { |
| 75 | gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)],pixeldata); |
| 76 | } |
| 77 | } |
| 78 | x0++; |
| 79 | y0 += y1; |
| 80 | } |
| 81 | } else if (dy) { |
| 82 | if (y0 > y1) { |
| 83 | GPU_SWAP(x0, x1, temp); |
| 84 | GPU_SWAP(y0, y1, temp); |
| 85 | } |
| 86 | x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy); |
| 87 | x0 <<= GPU_DIGITS; |
| 88 | temp = ymin - y0; |
| 89 | if (temp > 0) { |
| 90 | y0 = ymin; |
| 91 | x0 += (x1 * temp); |
| 92 | } |
| 93 | if (y1 > ymax) y1 = ymax; |
| 94 | y1 -= y0; |
| 95 | if (y1 < 0) y1 = 0; |
| 96 | |
| 97 | const int li=linesInterlace; |
| 98 | for (; y1; y1--) { |
| 99 | if( 0 == (y0&li) ) { |
| 100 | temp = x0 >> GPU_DIGITS; |
| 101 | if ((u32) (temp - xmin) < (u32) (xmax - xmin)) { |
| 102 | gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)],pixeldata); |
| 103 | } |
| 104 | } |
| 105 | y0++; |
| 106 | x0 += x1; |
| 107 | } |
| 108 | |
| 109 | } else { |
| 110 | if( 0 == (y0&linesInterlace) ) { |
| 111 | if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) { |
| 112 | if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) { |
| 113 | gpuPixelDriver(&((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)],pixeldata); |
| 114 | } |
| 115 | } |
| 116 | } |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /*---------------------------------------------------------------------- |
| 121 | GF |
| 122 | ----------------------------------------------------------------------*/ |
| 123 | |
| 124 | /////////////////////////////////////////////////////////////////////////////// |
| 125 | void gpuDrawLG(const PD gpuPixelDriver) |
| 126 | { |
| 127 | s32 temp; |
| 128 | s32 xmin, xmax; |
| 129 | s32 ymin, ymax; |
| 130 | s32 x0, x1, dx; |
| 131 | s32 y0, y1, dy; |
| 132 | s32 r0, r1; |
| 133 | s32 g0, g1; |
| 134 | s32 b0, b1; |
| 135 | |
| 136 | x0 = PacketBuffer.S2[2] + DrawingOffset[0]; GPU_TESTRANGE(x0); |
| 137 | y0 = PacketBuffer.S2[3] + DrawingOffset[1]; GPU_TESTRANGE(y0); |
| 138 | x1 = PacketBuffer.S2[6] + DrawingOffset[0]; GPU_TESTRANGE(x1); |
| 139 | y1 = PacketBuffer.S2[7] + DrawingOffset[1]; GPU_TESTRANGE(y1); |
| 140 | |
| 141 | r0 = PacketBuffer.U1[0]; g0 = PacketBuffer.U1[1]; b0 = PacketBuffer.U1[2]; |
| 142 | r1 = PacketBuffer.U1[8]; g1 = PacketBuffer.U1[9]; b1 = PacketBuffer.U1[10]; |
| 143 | |
| 144 | xmin = DrawingArea[0]; xmax = DrawingArea[2]; |
| 145 | ymin = DrawingArea[1]; ymax = DrawingArea[3]; |
| 146 | |
| 147 | dy = (y1 - y0); |
| 148 | if (dy < 0) |
| 149 | dy = -dy; |
| 150 | dx = (x1 - x0); |
| 151 | if (dx < 0) |
| 152 | dx = -dx; |
| 153 | if (dx > dy) { |
| 154 | if (x0 > x1) { |
| 155 | GPU_SWAP(x0, x1, temp); |
| 156 | GPU_SWAP(y0, y1, temp); |
| 157 | GPU_SWAP(r0, r1, temp); |
| 158 | GPU_SWAP(g0, g1, temp); |
| 159 | GPU_SWAP(b0, b1, temp); |
| 160 | } |
| 161 | y1 = GPU_DIV((y1 - y0) << GPU_DIGITS, dx); |
| 162 | r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dx); |
| 163 | g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dx); |
| 164 | b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dx); |
| 165 | y0 <<= GPU_DIGITS; |
| 166 | r0 <<= GPU_DIGITS; |
| 167 | g0 <<= GPU_DIGITS; |
| 168 | b0 <<= GPU_DIGITS; |
| 169 | temp = xmin - x0; |
| 170 | if (temp > 0) { |
| 171 | x0 = xmin; |
| 172 | y0 += (y1 * temp); |
| 173 | r0 += (r1 * temp); |
| 174 | g0 += (g1 * temp); |
| 175 | b0 += (b1 * temp); |
| 176 | } |
| 177 | if (x1 > xmax) x1 = xmax; |
| 178 | x1 -= x0; |
| 179 | if (x1 < 0) x1 = 0; |
| 180 | |
| 181 | const int li=linesInterlace; |
| 182 | for (; x1; x1--) { |
| 183 | temp = y0 >> GPU_DIGITS; |
| 184 | if( 0 == (temp&li) ) { |
| 185 | if ((u32) (temp - ymin) < (u32) (ymax - ymin)) { |
| 186 | gpuPixelDriver ( |
| 187 | &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, temp)], |
| 188 | (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F) |
| 189 | ); |
| 190 | } |
| 191 | } |
| 192 | x0++; |
| 193 | y0 += y1; |
| 194 | r0 += r1; |
| 195 | g0 += g1; |
| 196 | b0 += b1; |
| 197 | } |
| 198 | } else if (dy) { |
| 199 | if (y0 > y1) { |
| 200 | GPU_SWAP(x0, x1, temp); |
| 201 | GPU_SWAP(y0, y1, temp); |
| 202 | GPU_SWAP(r0, r1, temp); |
| 203 | GPU_SWAP(g0, g1, temp); |
| 204 | GPU_SWAP(b0, b1, temp); |
| 205 | } |
| 206 | x1 = GPU_DIV((x1 - x0) << GPU_DIGITS, dy); |
| 207 | r1 = GPU_DIV((r1 - r0) << GPU_DIGITS, dy); |
| 208 | g1 = GPU_DIV((g1 - g0) << GPU_DIGITS, dy); |
| 209 | b1 = GPU_DIV((b1 - b0) << GPU_DIGITS, dy); |
| 210 | x0 <<= GPU_DIGITS; |
| 211 | r0 <<= GPU_DIGITS; |
| 212 | g0 <<= GPU_DIGITS; |
| 213 | b0 <<= GPU_DIGITS; |
| 214 | temp = ymin - y0; |
| 215 | if (temp > 0) { |
| 216 | y0 = ymin; |
| 217 | x0 += (x1 * temp); |
| 218 | r0 += (r1 * temp); |
| 219 | g0 += (g1 * temp); |
| 220 | b0 += (b1 * temp); |
| 221 | } |
| 222 | if (y1 > ymax) y1 = ymax; |
| 223 | y1 -= y0; |
| 224 | if (y1 < 0) y1 = 0; |
| 225 | |
| 226 | const int li=linesInterlace; |
| 227 | for (; y1; y1--) { |
| 228 | if( 0 == (y0&li) ) { |
| 229 | temp = x0 >> GPU_DIGITS; |
| 230 | if ((u32) (temp - xmin) < (u32) (xmax - xmin)) { |
| 231 | gpuPixelDriver ( |
| 232 | &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(temp, y0)], |
| 233 | (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F) |
| 234 | ); |
| 235 | } |
| 236 | } |
| 237 | y0++; |
| 238 | x0 += x1; |
| 239 | r0 += r1; |
| 240 | g0 += g1; |
| 241 | b0 += b1; |
| 242 | } |
| 243 | } else { |
| 244 | if( 0 == (y0&linesInterlace) ) { |
| 245 | if ((u32) (x0 - xmin) < (u32) (xmax - xmin)) { |
| 246 | if ((u32) (y0 - ymin) < (u32) (ymax - ymin)) { |
| 247 | gpuPixelDriver ( |
| 248 | &((u16*)GPU_FrameBuffer)[FRAME_OFFSET(x0, y0)], |
| 249 | (((b0>>GPU_DIGITSC)&0x1F)<<10) | (((g0>>GPU_DIGITSC)&0x1F)<< 5) | ((r0>>GPU_DIGITSC)&0x1F) |
| 250 | ); |
| 251 | } |
| 252 | } |
| 253 | } |
| 254 | } |
| 255 | } |