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Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/pixel.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/pixel.c | 443 |
1 files changed, 0 insertions, 443 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/pixel.c b/nx-X11/extras/Mesa/src/glx/x11/pixel.c deleted file mode 100644 index 3b3a1811a..000000000 --- a/nx-X11/extras/Mesa/src/glx/x11/pixel.c +++ /dev/null @@ -1,443 +0,0 @@ -/* $XFree86: xc/lib/GL/glx/pixel.c,v 1.8 2003/09/28 20:15:04 alanh Exp $ */ -/* -** License Applicability. Except to the extent portions of this file are -** made subject to an alternative license as permitted in the SGI Free -** Software License B, Version 1.1 (the "License"), the contents of this -** file are subject only to the provisions of the License. You may not use -** this file except in compliance with the License. You may obtain a copy -** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600 -** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at: -** -** http://oss.sgi.com/projects/FreeB -** -** Note that, as provided in the License, the Software is distributed on an -** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS -** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND -** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A -** PARTICULAR PURPOSE, AND NON-INFRINGEMENT. -** -** Original Code. The Original Code is: OpenGL Sample Implementation, -** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics, -** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc. -** Copyright in any portions created by third parties is as indicated -** elsewhere herein. All Rights Reserved. -** -** Additional Notice Provisions: The application programming interfaces -** established by SGI in conjunction with the Original Code are The -** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released -** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version -** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X -** Window System(R) (Version 1.3), released October 19, 1998. This software -** was created using the OpenGL(R) version 1.2.1 Sample Implementation -** published by SGI, but has not been independently verified as being -** compliant with the OpenGL(R) version 1.2.1 Specification. -** -*/ - -#include "packrender.h" - -static const GLubyte MsbToLsbTable[256] = { - 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, - 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, - 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, - 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, - 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, - 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, - 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, - 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, - 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, - 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, - 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, - 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, - 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, - 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, - 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, - 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, - 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, - 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, - 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, - 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, - 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, - 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, - 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, - 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, - 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, - 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, - 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, - 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, - 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, - 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, - 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, - 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, -}; - -static const GLubyte LowBitsMask[9] = { - 0x00, 0x01, 0x03, 0x07, 0x0f, 0x1f, 0x3f, 0x7f, 0xff, -}; - -static const GLubyte HighBitsMask[9] = { - 0x00, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe, 0xff, -}; - - -/* -** Copy bitmap data from clients packed memory applying unpacking modes as the -** data is transfered into the destImage buffer. Return in modes the -** set of pixel modes that are to be done by the server. -*/ -static void FillBitmap(__GLXcontext *gc, GLint width, GLint height, - GLenum format, const GLvoid *userdata, - GLubyte *destImage) -{ - const __GLXattribute * state = gc->client_state_private; - GLint rowLength = state->storeUnpack.rowLength; - GLint alignment = state->storeUnpack.alignment; - GLint skipPixels = state->storeUnpack.skipPixels; - GLint skipRows = state->storeUnpack.skipRows; - GLint lsbFirst = state->storeUnpack.lsbFirst; - GLint elementsLeft, bitOffset, currentByte, nextByte, highBitMask; - GLint lowBitMask, i; - GLint components, groupsPerRow, rowSize, padding, elementsPerRow; - const GLubyte *start, *iter; - - if (rowLength > 0) { - groupsPerRow = rowLength; - } else { - groupsPerRow = width; - } - components = __glElementsPerGroup(format,GL_BITMAP); - rowSize = (groupsPerRow * components + 7) >> 3; - padding = (rowSize % alignment); - if (padding) { - rowSize += alignment - padding; - } - start = ((const GLubyte*) userdata) + skipRows * rowSize + - ((skipPixels * components) >> 3); - bitOffset = (skipPixels * components) & 7; - highBitMask = LowBitsMask[8-bitOffset]; - lowBitMask = HighBitsMask[bitOffset]; - elementsPerRow = width * components; - for (i = 0; i < height; i++) { - elementsLeft = elementsPerRow; - iter = start; - while (elementsLeft) { - /* First retrieve low bits from current byte */ - if (lsbFirst) { - currentByte = MsbToLsbTable[iter[0]]; - } else { - currentByte = iter[0]; - } - if (bitOffset) { - /* Need to read next byte to finish current byte */ - if (elementsLeft > (8 - bitOffset)) { - if (lsbFirst) { - nextByte = MsbToLsbTable[iter[1]]; - } else { - nextByte = iter[1]; - } - currentByte = - ((currentByte & highBitMask) << bitOffset) | - ((nextByte & lowBitMask) >> (8 - bitOffset)); - } else { - currentByte = - ((currentByte & highBitMask) << bitOffset); - } - } - if (elementsLeft >= 8) { - *destImage = currentByte; - elementsLeft -= 8; - } else { - *destImage = currentByte & HighBitsMask[elementsLeft]; - elementsLeft = 0; - } - destImage++; - iter++; - } - start += rowSize; - } -} - -/* -** Extract array from user's data applying all pixel store modes. -** The internal packed array format used has LSB_FIRST = FALSE and -** ALIGNMENT = 1. -*/ -void __glFillImage(__GLXcontext *gc, GLint dim, GLint width, GLint height, - GLint depth, GLenum format, GLenum type, - const GLvoid *userdata, GLubyte *newimage, GLubyte *modes) -{ - const __GLXattribute * state = gc->client_state_private; - GLint rowLength = state->storeUnpack.rowLength; - GLint imageHeight = state->storeUnpack.imageHeight; - GLint alignment = state->storeUnpack.alignment; - GLint skipPixels = state->storeUnpack.skipPixels; - GLint skipRows = state->storeUnpack.skipRows; - GLint skipImages = state->storeUnpack.skipImages; - GLint swapBytes = state->storeUnpack.swapEndian; - GLint components, elementSize, rowSize, padding, groupsPerRow, groupSize; - GLint elementsPerRow, imageSize, rowsPerImage, h, i, j, k; - const GLubyte *start, *iter, *itera, *iterb, *iterc; - GLubyte *iter2; - - if (type == GL_BITMAP) { - FillBitmap(gc, width, height, format, userdata, newimage); - } else { - components = __glElementsPerGroup(format,type); - if (rowLength > 0) { - groupsPerRow = rowLength; - } else { - groupsPerRow = width; - } - if (imageHeight > 0) { - rowsPerImage = imageHeight; - } else { - rowsPerImage = height; - } - - elementSize = __glBytesPerElement(type); - groupSize = elementSize * components; - if (elementSize == 1) swapBytes = 0; - - rowSize = groupsPerRow * groupSize; - padding = (rowSize % alignment); - if (padding) { - rowSize += alignment - padding; - } - imageSize = rowSize * rowsPerImage; - start = ((const GLubyte*) userdata) + skipImages * imageSize + - skipRows * rowSize + skipPixels * groupSize; - iter2 = newimage; - elementsPerRow = width * components; - - if (swapBytes) { - itera = start; - for (h = 0; h < depth; h++) { - iterb = itera; - for (i = 0; i < height; i++) { - iterc = iterb; - for (j = 0; j < elementsPerRow; j++) { - for (k = 1; k <= elementSize; k++) { - iter2[k-1] = iterc[elementSize - k]; - } - iter2 += elementSize; - iterc += elementSize; - } - iterb += rowSize; - } - itera += imageSize; - } - } else { - itera = start; - for (h = 0; h < depth; h++) { - if (rowSize == elementsPerRow * elementSize) { - /* Ha! This is mondo easy! */ - __GLX_MEM_COPY(iter2, itera, - elementsPerRow * elementSize * height); - iter2 += elementsPerRow * elementSize * height; - } else { - iter = itera; - for (i = 0; i < height; i++) { - __GLX_MEM_COPY(iter2, iter, elementsPerRow*elementSize); - iter2 += elementsPerRow * elementSize; - iter += rowSize; - } - } - itera += imageSize; - } - } - } - - /* Setup store modes that describe what we just did */ - if (modes) { - if ( dim < 3 ) { - (void) memcpy( modes, __glXDefaultPixelStore + 4, 20 ); - } - else { - (void) memcpy( modes, __glXDefaultPixelStore + 0, 36 ); - } - } -} - -/* -** Empty a bitmap in LSB_FIRST=GL_FALSE and ALIGNMENT=4 format packing it -** into the clients memory using the pixel store PACK modes. -*/ -static void EmptyBitmap(__GLXcontext *gc, GLint width, GLint height, - GLenum format, const GLubyte *sourceImage, - GLvoid *userdata) -{ - const __GLXattribute * state = gc->client_state_private; - GLint rowLength = state->storePack.rowLength; - GLint alignment = state->storePack.alignment; - GLint skipPixels = state->storePack.skipPixels; - GLint skipRows = state->storePack.skipRows; - GLint lsbFirst = state->storePack.lsbFirst; - GLint components, groupsPerRow, rowSize, padding, elementsPerRow; - GLint sourceRowSize, sourcePadding, sourceSkip; - GLubyte *start, *iter; - GLint elementsLeft, bitOffset, currentByte, highBitMask, lowBitMask; - GLint writeMask, i; - GLubyte writeByte; - - components = __glElementsPerGroup(format,GL_BITMAP); - if (rowLength > 0) { - groupsPerRow = rowLength; - } else { - groupsPerRow = width; - } - - rowSize = (groupsPerRow * components + 7) >> 3; - padding = (rowSize % alignment); - if (padding) { - rowSize += alignment - padding; - } - sourceRowSize = (width * components + 7) >> 3; - sourcePadding = (sourceRowSize % 4); - if (sourcePadding) { - sourceSkip = 4 - sourcePadding; - } else { - sourceSkip = 0; - } - start = ((GLubyte*) userdata) + skipRows * rowSize + - ((skipPixels * components) >> 3); - bitOffset = (skipPixels * components) & 7; - highBitMask = LowBitsMask[8-bitOffset]; - lowBitMask = HighBitsMask[bitOffset]; - elementsPerRow = width * components; - for (i = 0; i < height; i++) { - elementsLeft = elementsPerRow; - iter = start; - writeMask = highBitMask; - writeByte = 0; - while (elementsLeft) { - /* Set up writeMask (to write to current byte) */ - if (elementsLeft + bitOffset < 8) { - /* Need to trim writeMask */ - writeMask &= HighBitsMask[bitOffset+elementsLeft]; - } - - if (lsbFirst) { - currentByte = MsbToLsbTable[iter[0]]; - } else { - currentByte = iter[0]; - } - - if (bitOffset) { - writeByte |= (sourceImage[0] >> bitOffset); - currentByte = (currentByte & ~writeMask) | - (writeByte & writeMask); - writeByte = (sourceImage[0] << (8 - bitOffset)); - } else { - currentByte = (currentByte & ~writeMask) | - (sourceImage[0] & writeMask); - } - - if (lsbFirst) { - iter[0] = MsbToLsbTable[currentByte]; - } else { - iter[0] = currentByte; - } - - if (elementsLeft >= 8) { - elementsLeft -= 8; - } else { - elementsLeft = 0; - } - sourceImage++; - iter++; - writeMask = 0xff; - } - if (writeByte) { - /* Some data left over that still needs writing */ - writeMask &= lowBitMask; - if (lsbFirst) { - currentByte = MsbToLsbTable[iter[0]]; - } else { - currentByte = iter[0]; - } - currentByte = (currentByte & ~writeMask) | (writeByte & writeMask); - if (lsbFirst) { - iter[0] = MsbToLsbTable[currentByte]; - } else { - iter[0] = currentByte; - } - } - start += rowSize; - sourceImage += sourceSkip; - } -} - -/* -** Insert array into user's data applying all pixel store modes. -** The packed array format from the server is LSB_FIRST = FALSE, -** SWAP_BYTES = the current pixel storage pack mode, and ALIGNMENT = 4. -** Named __glEmptyImage() because it is the opposite of __glFillImage(). -*/ -/* ARGSUSED */ -void __glEmptyImage(__GLXcontext *gc, GLint dim, GLint width, GLint height, - GLint depth, GLenum format, GLenum type, - const GLubyte *sourceImage, GLvoid *userdata) -{ - const __GLXattribute * state = gc->client_state_private; - GLint rowLength = state->storePack.rowLength; - GLint imageHeight = state->storePack.imageHeight; - GLint alignment = state->storePack.alignment; - GLint skipPixels = state->storePack.skipPixels; - GLint skipRows = state->storePack.skipRows; - GLint skipImages = state->storePack.skipImages; - GLint components, elementSize, rowSize, padding, groupsPerRow, groupSize; - GLint elementsPerRow, sourceRowSize, sourcePadding, h, i; - GLint imageSize, rowsPerImage; - GLubyte *start, *iter, *itera; - - if (type == GL_BITMAP) { - EmptyBitmap(gc, width, height, format, sourceImage, userdata); - } else { - components = __glElementsPerGroup(format,type); - if (rowLength > 0) { - groupsPerRow = rowLength; - } else { - groupsPerRow = width; - } - if (imageHeight > 0) { - rowsPerImage = imageHeight; - } else { - rowsPerImage = height; - } - elementSize = __glBytesPerElement(type); - groupSize = elementSize * components; - rowSize = groupsPerRow * groupSize; - padding = (rowSize % alignment); - if (padding) { - rowSize += alignment - padding; - } - sourceRowSize = width * groupSize; - sourcePadding = (sourceRowSize % 4); - if (sourcePadding) { - sourceRowSize += 4 - sourcePadding; - } - imageSize = sourceRowSize * rowsPerImage; - start = ((GLubyte*) userdata) + skipImages * imageSize + - skipRows * rowSize + skipPixels * groupSize; - elementsPerRow = width * components; - - itera = start; - for (h = 0; h < depth; h++) { - if ((rowSize == sourceRowSize) && (sourcePadding == 0)) { - /* Ha! This is mondo easy! */ - __GLX_MEM_COPY(itera, sourceImage, - elementsPerRow * elementSize * height); - sourceImage += elementsPerRow * elementSize * height; - } else { - iter = itera; - for (i = 0; i < height; i++) { - __GLX_MEM_COPY(iter, sourceImage, - elementsPerRow * elementSize); - sourceImage += sourceRowSize; - iter += rowSize; - } - } - itera += imageSize; - } - } -} |