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207 lines
6.8 KiB
C
207 lines
6.8 KiB
C
#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#ifndef __GLX_unpack_h__
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#define __GLX_unpack_h__
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/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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#define __GLX_PAD(s) (((s)+3) & (GLuint)~3)
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/*
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** Fetch the context-id out of a SingleReq request pointed to by pc.
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*/
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#define __GLX_GET_SINGLE_CONTEXT_TAG(pc) (((xGLXSingleReq*)pc)->contextTag)
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#define __GLX_GET_VENDPRIV_CONTEXT_TAG(pc) (((xGLXVendorPrivateReq*)pc)->contextTag)
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/*
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** Fetch a double from potentially unaligned memory.
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*/
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#ifdef __GLX_ALIGN64
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#define __GLX_MEM_COPY(dst,src,n) memmove(dst,src,n)
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#define __GLX_GET_DOUBLE(dst,src) __GLX_MEM_COPY(&dst,src,8)
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#else
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#define __GLX_GET_DOUBLE(dst,src) (dst) = *((GLdouble*)(src))
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#endif
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#define __GLX_BEGIN_REPLY(size) \
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reply.length = __GLX_PAD(size) >> 2; \
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reply.type = X_Reply; \
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reply.sequenceNumber = client->sequence;
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#define __GLX_SEND_HEADER() \
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WriteToClient (client, sz_xGLXSingleReply, &reply);
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#define __GLX_PUT_RETVAL(a) \
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reply.retval = (a);
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#define __GLX_PUT_SIZE(a) \
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reply.size = (a);
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/*
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** Get a buffer to hold returned data, with the given alignment. If we have
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** to realloc, allocate size+align, in case the pointer has to be bumped for
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** alignment. The answerBuffer should already be aligned.
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**
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** NOTE: the cast (long)res below assumes a long is large enough to hold a
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** pointer.
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*/
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#define __GLX_GET_ANSWER_BUFFER(res,cl,size,align) \
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if (size < 0) return BadLength; \
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else if ((size) > sizeof(answerBuffer)) { \
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int bump; \
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if ((cl)->returnBufSize < (size)+(align)) { \
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(cl)->returnBuf = (GLbyte*)realloc((cl)->returnBuf, \
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(size)+(align)); \
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if (!(cl)->returnBuf) { \
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return BadAlloc; \
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} \
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(cl)->returnBufSize = (size)+(align); \
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} \
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res = (char*)cl->returnBuf; \
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bump = (long)(res) % (align); \
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if (bump) res += (align) - (bump); \
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} else { \
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res = (char *)answerBuffer; \
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}
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#define __GLX_SEND_BYTE_ARRAY(len) \
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WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), answer)
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#define __GLX_SEND_SHORT_ARRAY(len) \
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WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), answer)
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#define __GLX_SEND_INT_ARRAY(len) \
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WriteToClient(client, (len)*__GLX_SIZE_INT32, answer)
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#define __GLX_SEND_FLOAT_ARRAY(len) \
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WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, answer)
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#define __GLX_SEND_DOUBLE_ARRAY(len) \
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WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, answer)
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#define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len)
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#define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len)
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#define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len)
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#define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len)
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/*
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** PERFORMANCE NOTE:
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** Machine dependent optimizations abound here; these swapping macros can
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** conceivably be replaced with routines that do the job faster.
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*/
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#define __GLX_DECLARE_SWAP_VARIABLES \
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GLbyte sw
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#define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \
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GLbyte *swapPC; \
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GLbyte *swapEnd
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#define __GLX_SWAP_INT(pc) \
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sw = ((GLbyte *)(pc))[0]; \
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((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \
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((GLbyte *)(pc))[3] = sw; \
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sw = ((GLbyte *)(pc))[1]; \
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((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \
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((GLbyte *)(pc))[2] = sw;
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#define __GLX_SWAP_SHORT(pc) \
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sw = ((GLbyte *)(pc))[0]; \
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((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \
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((GLbyte *)(pc))[1] = sw;
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#define __GLX_SWAP_DOUBLE(pc) \
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sw = ((GLbyte *)(pc))[0]; \
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((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \
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((GLbyte *)(pc))[7] = sw; \
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sw = ((GLbyte *)(pc))[1]; \
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((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \
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((GLbyte *)(pc))[6] = sw; \
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sw = ((GLbyte *)(pc))[2]; \
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((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \
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((GLbyte *)(pc))[5] = sw; \
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sw = ((GLbyte *)(pc))[3]; \
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((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \
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((GLbyte *)(pc))[4] = sw;
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#define __GLX_SWAP_FLOAT(pc) \
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sw = ((GLbyte *)(pc))[0]; \
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((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \
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((GLbyte *)(pc))[3] = sw; \
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sw = ((GLbyte *)(pc))[1]; \
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((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \
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((GLbyte *)(pc))[2] = sw;
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#define __GLX_SWAP_INT_ARRAY(pc, count) \
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swapPC = ((GLbyte *)(pc)); \
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swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\
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while (swapPC < swapEnd) { \
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__GLX_SWAP_INT(swapPC); \
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swapPC += __GLX_SIZE_INT32; \
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}
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#define __GLX_SWAP_SHORT_ARRAY(pc, count) \
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swapPC = ((GLbyte *)(pc)); \
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swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\
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while (swapPC < swapEnd) { \
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__GLX_SWAP_SHORT(swapPC); \
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swapPC += __GLX_SIZE_INT16; \
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}
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#define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \
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swapPC = ((GLbyte *)(pc)); \
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swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\
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while (swapPC < swapEnd) { \
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__GLX_SWAP_DOUBLE(swapPC); \
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swapPC += __GLX_SIZE_FLOAT64; \
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}
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#define __GLX_SWAP_FLOAT_ARRAY(pc, count) \
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swapPC = ((GLbyte *)(pc)); \
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swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\
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while (swapPC < swapEnd) { \
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__GLX_SWAP_FLOAT(swapPC); \
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swapPC += __GLX_SIZE_FLOAT32; \
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}
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#define __GLX_SWAP_REPLY_HEADER() \
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__GLX_SWAP_SHORT(&reply.sequenceNumber); \
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__GLX_SWAP_INT(&reply.length);
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#define __GLX_SWAP_REPLY_RETVAL() \
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__GLX_SWAP_INT(&reply.retval)
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#define __GLX_SWAP_REPLY_SIZE() \
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__GLX_SWAP_INT(&reply.size)
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#endif /* !__GLX_unpack_h__ */
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