Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 1 | /* |
Adam Jackson | dc8058c | 2008-09-19 17:16:53 -0400 | [diff] [blame] | 2 | * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) |
| 3 | * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice including the dates of first publication and |
| 13 | * either this permission notice or a reference to |
| 14 | * http://oss.sgi.com/projects/FreeB/ |
| 15 | * shall be included in all copies or substantial portions of the Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| 18 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 20 | * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| 21 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| 22 | * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 23 | * SOFTWARE. |
| 24 | * |
| 25 | * Except as contained in this notice, the name of Silicon Graphics, Inc. |
| 26 | * shall not be used in advertising or otherwise to promote the sale, use or |
| 27 | * other dealings in this Software without prior written authorization from |
| 28 | * Silicon Graphics, Inc. |
| 29 | */ |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 30 | |
| 31 | #include "packrender.h" |
| 32 | |
Adam Jackson | 473fe6d | 2004-11-03 18:55:31 +0000 | [diff] [blame] | 33 | static const GLubyte MsbToLsbTable[256] = { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 34 | 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, |
| 35 | 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, |
| 36 | 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, |
| 37 | 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, |
| 38 | 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, |
| 39 | 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, |
| 40 | 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, |
| 41 | 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, |
| 42 | 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, |
| 43 | 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, |
| 44 | 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, |
| 45 | 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, |
| 46 | 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, |
| 47 | 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, |
| 48 | 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, |
| 49 | 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, |
| 50 | 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, |
| 51 | 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, |
| 52 | 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, |
| 53 | 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, |
| 54 | 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, |
| 55 | 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, |
| 56 | 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, |
| 57 | 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, |
| 58 | 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, |
| 59 | 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, |
| 60 | 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, |
| 61 | 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, |
| 62 | 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, |
| 63 | 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, |
| 64 | 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, |
| 65 | 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 66 | }; |
| 67 | |
Adam Jackson | 473fe6d | 2004-11-03 18:55:31 +0000 | [diff] [blame] | 68 | static const GLubyte LowBitsMask[9] = { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 69 | 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff, |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 70 | }; |
| 71 | |
Adam Jackson | 473fe6d | 2004-11-03 18:55:31 +0000 | [diff] [blame] | 72 | static const GLubyte HighBitsMask[9] = { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 73 | 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff, |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 74 | }; |
| 75 | |
| 76 | |
| 77 | /* |
| 78 | ** Copy bitmap data from clients packed memory applying unpacking modes as the |
| 79 | ** data is transfered into the destImage buffer. Return in modes the |
| 80 | ** set of pixel modes that are to be done by the server. |
| 81 | */ |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 82 | static void |
Kristian Høgsberg | c356f58 | 2010-07-28 11:16:00 -0400 | [diff] [blame] | 83 | FillBitmap(struct glx_context * gc, GLint width, GLint height, |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 84 | GLenum format, const GLvoid * userdata, GLubyte * destImage) |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 85 | { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 86 | const __GLXattribute *state = gc->client_state_private; |
| 87 | GLint rowLength = state->storeUnpack.rowLength; |
| 88 | GLint alignment = state->storeUnpack.alignment; |
| 89 | GLint skipPixels = state->storeUnpack.skipPixels; |
| 90 | GLint skipRows = state->storeUnpack.skipRows; |
| 91 | GLint lsbFirst = state->storeUnpack.lsbFirst; |
| 92 | GLint elementsLeft, bitOffset, currentByte, nextByte, highBitMask; |
| 93 | GLint lowBitMask, i; |
| 94 | GLint components, groupsPerRow, rowSize, padding, elementsPerRow; |
| 95 | const GLubyte *start, *iter; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 96 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 97 | if (rowLength > 0) { |
| 98 | groupsPerRow = rowLength; |
| 99 | } |
| 100 | else { |
| 101 | groupsPerRow = width; |
| 102 | } |
| 103 | components = __glElementsPerGroup(format, GL_BITMAP); |
| 104 | rowSize = (groupsPerRow * components + 7) >> 3; |
| 105 | padding = (rowSize % alignment); |
| 106 | if (padding) { |
| 107 | rowSize += alignment - padding; |
| 108 | } |
| 109 | start = ((const GLubyte *) userdata) + skipRows * rowSize + |
| 110 | ((skipPixels * components) >> 3); |
| 111 | bitOffset = (skipPixels * components) & 7; |
| 112 | highBitMask = LowBitsMask[8 - bitOffset]; |
| 113 | lowBitMask = HighBitsMask[bitOffset]; |
| 114 | elementsPerRow = width * components; |
| 115 | for (i = 0; i < height; i++) { |
| 116 | elementsLeft = elementsPerRow; |
| 117 | iter = start; |
| 118 | while (elementsLeft) { |
| 119 | /* First retrieve low bits from current byte */ |
| 120 | if (lsbFirst) { |
| 121 | currentByte = MsbToLsbTable[iter[0]]; |
| 122 | } |
| 123 | else { |
| 124 | currentByte = iter[0]; |
| 125 | } |
| 126 | if (bitOffset) { |
| 127 | /* Need to read next byte to finish current byte */ |
| 128 | if (elementsLeft > (8 - bitOffset)) { |
| 129 | if (lsbFirst) { |
| 130 | nextByte = MsbToLsbTable[iter[1]]; |
| 131 | } |
| 132 | else { |
| 133 | nextByte = iter[1]; |
| 134 | } |
| 135 | currentByte = |
| 136 | ((currentByte & highBitMask) << bitOffset) | |
| 137 | ((nextByte & lowBitMask) >> (8 - bitOffset)); |
| 138 | } |
| 139 | else { |
| 140 | currentByte = ((currentByte & highBitMask) << bitOffset); |
| 141 | } |
| 142 | } |
| 143 | if (elementsLeft >= 8) { |
| 144 | *destImage = currentByte; |
| 145 | elementsLeft -= 8; |
| 146 | } |
| 147 | else { |
| 148 | *destImage = currentByte & HighBitsMask[elementsLeft]; |
| 149 | elementsLeft = 0; |
| 150 | } |
| 151 | destImage++; |
| 152 | iter++; |
| 153 | } |
| 154 | start += rowSize; |
| 155 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | /* |
| 159 | ** Extract array from user's data applying all pixel store modes. |
| 160 | ** The internal packed array format used has LSB_FIRST = FALSE and |
| 161 | ** ALIGNMENT = 1. |
| 162 | */ |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 163 | void |
Kristian Høgsberg | c356f58 | 2010-07-28 11:16:00 -0400 | [diff] [blame] | 164 | __glFillImage(struct glx_context * gc, GLint dim, GLint width, GLint height, |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 165 | GLint depth, GLenum format, GLenum type, |
| 166 | const GLvoid * userdata, GLubyte * newimage, GLubyte * modes) |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 167 | { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 168 | const __GLXattribute *state = gc->client_state_private; |
| 169 | GLint rowLength = state->storeUnpack.rowLength; |
| 170 | GLint imageHeight = state->storeUnpack.imageHeight; |
| 171 | GLint alignment = state->storeUnpack.alignment; |
| 172 | GLint skipPixels = state->storeUnpack.skipPixels; |
| 173 | GLint skipRows = state->storeUnpack.skipRows; |
| 174 | GLint skipImages = state->storeUnpack.skipImages; |
| 175 | GLint swapBytes = state->storeUnpack.swapEndian; |
| 176 | GLint components, elementSize, rowSize, padding, groupsPerRow, groupSize; |
| 177 | GLint elementsPerRow, imageSize, rowsPerImage, h, i, j, k; |
| 178 | const GLubyte *start, *iter, *itera, *iterb, *iterc; |
| 179 | GLubyte *iter2; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 180 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 181 | if (type == GL_BITMAP) { |
| 182 | FillBitmap(gc, width, height, format, userdata, newimage); |
| 183 | } |
| 184 | else { |
| 185 | components = __glElementsPerGroup(format, type); |
| 186 | if (rowLength > 0) { |
| 187 | groupsPerRow = rowLength; |
| 188 | } |
| 189 | else { |
| 190 | groupsPerRow = width; |
| 191 | } |
| 192 | if (imageHeight > 0) { |
| 193 | rowsPerImage = imageHeight; |
| 194 | } |
| 195 | else { |
| 196 | rowsPerImage = height; |
| 197 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 198 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 199 | elementSize = __glBytesPerElement(type); |
| 200 | groupSize = elementSize * components; |
| 201 | if (elementSize == 1) |
| 202 | swapBytes = 0; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 203 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 204 | rowSize = groupsPerRow * groupSize; |
| 205 | padding = (rowSize % alignment); |
| 206 | if (padding) { |
| 207 | rowSize += alignment - padding; |
| 208 | } |
| 209 | imageSize = rowSize * rowsPerImage; |
| 210 | start = ((const GLubyte *) userdata) + skipImages * imageSize + |
| 211 | skipRows * rowSize + skipPixels * groupSize; |
| 212 | iter2 = newimage; |
| 213 | elementsPerRow = width * components; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 214 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 215 | if (swapBytes) { |
| 216 | itera = start; |
| 217 | for (h = 0; h < depth; h++) { |
| 218 | iterb = itera; |
| 219 | for (i = 0; i < height; i++) { |
| 220 | iterc = iterb; |
| 221 | for (j = 0; j < elementsPerRow; j++) { |
| 222 | for (k = 1; k <= elementSize; k++) { |
| 223 | iter2[k - 1] = iterc[elementSize - k]; |
| 224 | } |
| 225 | iter2 += elementSize; |
| 226 | iterc += elementSize; |
| 227 | } |
| 228 | iterb += rowSize; |
| 229 | } |
| 230 | itera += imageSize; |
| 231 | } |
| 232 | } |
| 233 | else { |
| 234 | itera = start; |
| 235 | for (h = 0; h < depth; h++) { |
| 236 | if (rowSize == elementsPerRow * elementSize) { |
| 237 | /* Ha! This is mondo easy! */ |
| 238 | __GLX_MEM_COPY(iter2, itera, |
| 239 | elementsPerRow * elementSize * height); |
| 240 | iter2 += elementsPerRow * elementSize * height; |
| 241 | } |
| 242 | else { |
| 243 | iter = itera; |
| 244 | for (i = 0; i < height; i++) { |
| 245 | __GLX_MEM_COPY(iter2, iter, elementsPerRow * elementSize); |
| 246 | iter2 += elementsPerRow * elementSize; |
| 247 | iter += rowSize; |
| 248 | } |
| 249 | } |
| 250 | itera += imageSize; |
| 251 | } |
| 252 | } |
| 253 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 254 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 255 | /* Setup store modes that describe what we just did */ |
| 256 | if (modes) { |
| 257 | if (dim < 3) { |
| 258 | (void) memcpy(modes, __glXDefaultPixelStore + 4, 20); |
| 259 | } |
| 260 | else { |
| 261 | (void) memcpy(modes, __glXDefaultPixelStore + 0, 36); |
| 262 | } |
| 263 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | /* |
| 267 | ** Empty a bitmap in LSB_FIRST=GL_FALSE and ALIGNMENT=4 format packing it |
| 268 | ** into the clients memory using the pixel store PACK modes. |
| 269 | */ |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 270 | static void |
Kristian Høgsberg | c356f58 | 2010-07-28 11:16:00 -0400 | [diff] [blame] | 271 | EmptyBitmap(struct glx_context * gc, GLint width, GLint height, |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 272 | GLenum format, const GLubyte * sourceImage, GLvoid * userdata) |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 273 | { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 274 | const __GLXattribute *state = gc->client_state_private; |
| 275 | GLint rowLength = state->storePack.rowLength; |
| 276 | GLint alignment = state->storePack.alignment; |
| 277 | GLint skipPixels = state->storePack.skipPixels; |
| 278 | GLint skipRows = state->storePack.skipRows; |
| 279 | GLint lsbFirst = state->storePack.lsbFirst; |
| 280 | GLint components, groupsPerRow, rowSize, padding, elementsPerRow; |
| 281 | GLint sourceRowSize, sourcePadding, sourceSkip; |
| 282 | GLubyte *start, *iter; |
| 283 | GLint elementsLeft, bitOffset, currentByte, highBitMask, lowBitMask; |
| 284 | GLint writeMask, i; |
| 285 | GLubyte writeByte; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 286 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 287 | components = __glElementsPerGroup(format, GL_BITMAP); |
| 288 | if (rowLength > 0) { |
| 289 | groupsPerRow = rowLength; |
| 290 | } |
| 291 | else { |
| 292 | groupsPerRow = width; |
| 293 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 294 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 295 | rowSize = (groupsPerRow * components + 7) >> 3; |
| 296 | padding = (rowSize % alignment); |
| 297 | if (padding) { |
| 298 | rowSize += alignment - padding; |
| 299 | } |
| 300 | sourceRowSize = (width * components + 7) >> 3; |
| 301 | sourcePadding = (sourceRowSize % 4); |
| 302 | if (sourcePadding) { |
| 303 | sourceSkip = 4 - sourcePadding; |
| 304 | } |
| 305 | else { |
| 306 | sourceSkip = 0; |
| 307 | } |
| 308 | start = ((GLubyte *) userdata) + skipRows * rowSize + |
| 309 | ((skipPixels * components) >> 3); |
| 310 | bitOffset = (skipPixels * components) & 7; |
| 311 | highBitMask = LowBitsMask[8 - bitOffset]; |
| 312 | lowBitMask = HighBitsMask[bitOffset]; |
| 313 | elementsPerRow = width * components; |
| 314 | for (i = 0; i < height; i++) { |
| 315 | elementsLeft = elementsPerRow; |
| 316 | iter = start; |
| 317 | writeMask = highBitMask; |
| 318 | writeByte = 0; |
| 319 | while (elementsLeft) { |
| 320 | /* Set up writeMask (to write to current byte) */ |
| 321 | if (elementsLeft + bitOffset < 8) { |
| 322 | /* Need to trim writeMask */ |
| 323 | writeMask &= HighBitsMask[bitOffset + elementsLeft]; |
| 324 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 325 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 326 | if (lsbFirst) { |
| 327 | currentByte = MsbToLsbTable[iter[0]]; |
| 328 | } |
| 329 | else { |
| 330 | currentByte = iter[0]; |
| 331 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 332 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 333 | if (bitOffset) { |
| 334 | writeByte |= (sourceImage[0] >> bitOffset); |
| 335 | currentByte = (currentByte & ~writeMask) | |
| 336 | (writeByte & writeMask); |
| 337 | writeByte = (sourceImage[0] << (8 - bitOffset)); |
| 338 | } |
| 339 | else { |
| 340 | currentByte = (currentByte & ~writeMask) | |
| 341 | (sourceImage[0] & writeMask); |
| 342 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 343 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 344 | if (lsbFirst) { |
| 345 | iter[0] = MsbToLsbTable[currentByte]; |
| 346 | } |
| 347 | else { |
| 348 | iter[0] = currentByte; |
| 349 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 350 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 351 | if (elementsLeft >= 8) { |
| 352 | elementsLeft -= 8; |
| 353 | } |
| 354 | else { |
| 355 | elementsLeft = 0; |
| 356 | } |
| 357 | sourceImage++; |
| 358 | iter++; |
| 359 | writeMask = 0xff; |
| 360 | } |
| 361 | if (writeByte) { |
| 362 | /* Some data left over that still needs writing */ |
| 363 | writeMask &= lowBitMask; |
| 364 | if (lsbFirst) { |
| 365 | currentByte = MsbToLsbTable[iter[0]]; |
| 366 | } |
| 367 | else { |
| 368 | currentByte = iter[0]; |
| 369 | } |
| 370 | currentByte = (currentByte & ~writeMask) | (writeByte & writeMask); |
| 371 | if (lsbFirst) { |
| 372 | iter[0] = MsbToLsbTable[currentByte]; |
| 373 | } |
| 374 | else { |
| 375 | iter[0] = currentByte; |
| 376 | } |
| 377 | } |
| 378 | start += rowSize; |
| 379 | sourceImage += sourceSkip; |
| 380 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 381 | } |
| 382 | |
| 383 | /* |
| 384 | ** Insert array into user's data applying all pixel store modes. |
| 385 | ** The packed array format from the server is LSB_FIRST = FALSE, |
| 386 | ** SWAP_BYTES = the current pixel storage pack mode, and ALIGNMENT = 4. |
| 387 | ** Named __glEmptyImage() because it is the opposite of __glFillImage(). |
| 388 | */ |
| 389 | /* ARGSUSED */ |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 390 | void |
Kristian Høgsberg | c356f58 | 2010-07-28 11:16:00 -0400 | [diff] [blame] | 391 | __glEmptyImage(struct glx_context * gc, GLint dim, GLint width, GLint height, |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 392 | GLint depth, GLenum format, GLenum type, |
| 393 | const GLubyte * sourceImage, GLvoid * userdata) |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 394 | { |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 395 | const __GLXattribute *state = gc->client_state_private; |
| 396 | GLint rowLength = state->storePack.rowLength; |
| 397 | GLint imageHeight = state->storePack.imageHeight; |
| 398 | GLint alignment = state->storePack.alignment; |
| 399 | GLint skipPixels = state->storePack.skipPixels; |
| 400 | GLint skipRows = state->storePack.skipRows; |
| 401 | GLint skipImages = state->storePack.skipImages; |
| 402 | GLint components, elementSize, rowSize, padding, groupsPerRow, groupSize; |
| 403 | GLint elementsPerRow, sourceRowSize, sourcePadding, h, i; |
| 404 | GLint imageSize, rowsPerImage; |
| 405 | GLubyte *start, *iter, *itera; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 406 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 407 | if (type == GL_BITMAP) { |
| 408 | EmptyBitmap(gc, width, height, format, sourceImage, userdata); |
| 409 | } |
| 410 | else { |
| 411 | components = __glElementsPerGroup(format, type); |
| 412 | if (rowLength > 0) { |
| 413 | groupsPerRow = rowLength; |
| 414 | } |
| 415 | else { |
| 416 | groupsPerRow = width; |
| 417 | } |
| 418 | if (imageHeight > 0) { |
| 419 | rowsPerImage = imageHeight; |
| 420 | } |
| 421 | else { |
| 422 | rowsPerImage = height; |
| 423 | } |
| 424 | elementSize = __glBytesPerElement(type); |
| 425 | groupSize = elementSize * components; |
| 426 | rowSize = groupsPerRow * groupSize; |
| 427 | padding = (rowSize % alignment); |
| 428 | if (padding) { |
| 429 | rowSize += alignment - padding; |
| 430 | } |
| 431 | sourceRowSize = width * groupSize; |
| 432 | sourcePadding = (sourceRowSize % 4); |
| 433 | if (sourcePadding) { |
| 434 | sourceRowSize += 4 - sourcePadding; |
| 435 | } |
| 436 | imageSize = sourceRowSize * rowsPerImage; |
| 437 | start = ((GLubyte *) userdata) + skipImages * imageSize + |
| 438 | skipRows * rowSize + skipPixels * groupSize; |
| 439 | elementsPerRow = width * components; |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 440 | |
RALOVICH, Kristóf | 6581071 | 2008-10-13 14:32:52 +0200 | [diff] [blame] | 441 | itera = start; |
| 442 | for (h = 0; h < depth; h++) { |
| 443 | if ((rowSize == sourceRowSize) && (sourcePadding == 0)) { |
| 444 | /* Ha! This is mondo easy! */ |
| 445 | __GLX_MEM_COPY(itera, sourceImage, |
| 446 | elementsPerRow * elementSize * height); |
| 447 | sourceImage += elementsPerRow * elementSize * height; |
| 448 | } |
| 449 | else { |
| 450 | iter = itera; |
| 451 | for (i = 0; i < height; i++) { |
| 452 | __GLX_MEM_COPY(iter, sourceImage, |
| 453 | elementsPerRow * elementSize); |
| 454 | sourceImage += sourceRowSize; |
| 455 | iter += rowSize; |
| 456 | } |
| 457 | } |
| 458 | itera += imageSize; |
| 459 | } |
| 460 | } |
Adam Jackson | cb3610e | 2004-10-25 21:09:16 +0000 | [diff] [blame] | 461 | } |