#ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #ifndef __GLX_unpack_h__ #define __GLX_unpack_h__ /* * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008) * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice including the dates of first publication and * either this permission notice or a reference to * http://oss.sgi.com/projects/FreeB/ * shall be included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. * * Except as contained in this notice, the name of Silicon Graphics, Inc. * shall not be used in advertising or otherwise to promote the sale, use or * other dealings in this Software without prior written authorization from * Silicon Graphics, Inc. */ #define __GLX_PAD(s) (((s)+3) & (GLuint)~3) /* ** Fetch the context-id out of a SingleReq request pointed to by pc. */ #define __GLX_GET_SINGLE_CONTEXT_TAG(pc) (((xGLXSingleReq*)pc)->contextTag) #define __GLX_GET_VENDPRIV_CONTEXT_TAG(pc) (((xGLXVendorPrivateReq*)pc)->contextTag) /* ** Fetch a double from potentially unaligned memory. */ #ifdef __GLX_ALIGN64 #define __GLX_MEM_COPY(dst,src,n) if (src && dst) memcpy(dst,src,n) #define __GLX_GET_DOUBLE(dst,src) __GLX_MEM_COPY(&dst,src,8) #else #define __GLX_GET_DOUBLE(dst,src) (dst) = *((GLdouble*)(src)) #endif extern void __glXMemInit(void); extern xGLXSingleReply __glXReply; #define __GLX_BEGIN_REPLY(size) \ __glXReply.length = __GLX_PAD(size) >> 2; \ __glXReply.type = X_Reply; \ __glXReply.sequenceNumber = client->sequence; #define __GLX_SEND_HEADER() \ WriteToClient( client, sz_xGLXSingleReply, (char *)&__glXReply); #define __GLX_PUT_RETVAL(a) \ __glXReply.retval = (a); #define __GLX_PUT_SIZE(a) \ __glXReply.size = (a); #define __GLX_PUT_RENDERMODE(m) \ __glXReply.pad3 = (m) /* ** Get a buffer to hold returned data, with the given alignment. If we have ** to realloc, allocate size+align, in case the pointer has to be bumped for ** alignment. The answerBuffer should already be aligned. ** ** NOTE: the cast (long)res below assumes a long is large enough to hold a ** pointer. */ #define __GLX_GET_ANSWER_BUFFER(res,cl,size,align) \ if ((size) > sizeof(answerBuffer)) { \ int bump; \ if ((cl)->returnBufSize < (size)+(align)) { \ (cl)->returnBuf = (GLbyte*)Xrealloc((cl)->returnBuf, \ (size)+(align)); \ if (!(cl)->returnBuf) { \ return BadAlloc; \ } \ (cl)->returnBufSize = (size)+(align); \ } \ res = (char*)cl->returnBuf; \ bump = (long)(res) % (align); \ if (bump) res += (align) - (bump); \ } else { \ res = (char *)answerBuffer; \ } #define __GLX_PUT_BYTE() \ *(GLbyte *)&__glXReply.pad3 = *(GLbyte *)answer #define __GLX_PUT_SHORT() \ *(GLshort *)&__glXReply.pad3 = *(GLshort *)answer #define __GLX_PUT_INT() \ *(GLint *)&__glXReply.pad3 = *(GLint *)answer #define __GLX_PUT_FLOAT() \ *(GLfloat *)&__glXReply.pad3 = *(GLfloat *)answer #define __GLX_PUT_DOUBLE() \ *(GLdouble *)&__glXReply.pad3 = *(GLdouble *)answer #define __GLX_SEND_BYTE_ARRAY(len) \ WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT8), (char *)answer) #define __GLX_SEND_SHORT_ARRAY(len) \ WriteToClient(client, __GLX_PAD((len)*__GLX_SIZE_INT16), (char *)answer) #define __GLX_SEND_INT_ARRAY(len) \ WriteToClient(client, (len)*__GLX_SIZE_INT32, (char *)answer) #define __GLX_SEND_FLOAT_ARRAY(len) \ WriteToClient(client, (len)*__GLX_SIZE_FLOAT32, (char *)answer) #define __GLX_SEND_DOUBLE_ARRAY(len) \ WriteToClient(client, (len)*__GLX_SIZE_FLOAT64, (char *)answer) #define __GLX_SEND_VOID_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) #define __GLX_SEND_UBYTE_ARRAY(len) __GLX_SEND_BYTE_ARRAY(len) #define __GLX_SEND_USHORT_ARRAY(len) __GLX_SEND_SHORT_ARRAY(len) #define __GLX_SEND_UINT_ARRAY(len) __GLX_SEND_INT_ARRAY(len) /* ** PERFORMANCE NOTE: ** Machine dependent optimizations abound here; these swapping macros can ** conceivably be replaced with routines that do the job faster. */ #define __GLX_DECLARE_SWAP_VARIABLES \ GLbyte sw #define __GLX_DECLARE_SWAP_ARRAY_VARIABLES \ GLbyte *swapPC; \ GLbyte *swapEnd #define __GLX_SWAP_INT(pc) \ sw = ((GLbyte *)(pc))[0]; \ ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ ((GLbyte *)(pc))[3] = sw; \ sw = ((GLbyte *)(pc))[1]; \ ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ ((GLbyte *)(pc))[2] = sw; #define __GLX_SWAP_SHORT(pc) \ sw = ((GLbyte *)(pc))[0]; \ ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[1]; \ ((GLbyte *)(pc))[1] = sw; #define __GLX_SWAP_DOUBLE(pc) \ sw = ((GLbyte *)(pc))[0]; \ ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[7]; \ ((GLbyte *)(pc))[7] = sw; \ sw = ((GLbyte *)(pc))[1]; \ ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[6]; \ ((GLbyte *)(pc))[6] = sw; \ sw = ((GLbyte *)(pc))[2]; \ ((GLbyte *)(pc))[2] = ((GLbyte *)(pc))[5]; \ ((GLbyte *)(pc))[5] = sw; \ sw = ((GLbyte *)(pc))[3]; \ ((GLbyte *)(pc))[3] = ((GLbyte *)(pc))[4]; \ ((GLbyte *)(pc))[4] = sw; #define __GLX_SWAP_FLOAT(pc) \ sw = ((GLbyte *)(pc))[0]; \ ((GLbyte *)(pc))[0] = ((GLbyte *)(pc))[3]; \ ((GLbyte *)(pc))[3] = sw; \ sw = ((GLbyte *)(pc))[1]; \ ((GLbyte *)(pc))[1] = ((GLbyte *)(pc))[2]; \ ((GLbyte *)(pc))[2] = sw; #define __GLX_SWAP_INT_ARRAY(pc, count) \ swapPC = ((GLbyte *)(pc)); \ swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT32;\ while (swapPC < swapEnd) { \ __GLX_SWAP_INT(swapPC); \ swapPC += __GLX_SIZE_INT32; \ } #define __GLX_SWAP_SHORT_ARRAY(pc, count) \ swapPC = ((GLbyte *)(pc)); \ swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_INT16;\ while (swapPC < swapEnd) { \ __GLX_SWAP_SHORT(swapPC); \ swapPC += __GLX_SIZE_INT16; \ } #define __GLX_SWAP_DOUBLE_ARRAY(pc, count) \ swapPC = ((GLbyte *)(pc)); \ swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT64;\ while (swapPC < swapEnd) { \ __GLX_SWAP_DOUBLE(swapPC); \ swapPC += __GLX_SIZE_FLOAT64; \ } #define __GLX_SWAP_FLOAT_ARRAY(pc, count) \ swapPC = ((GLbyte *)(pc)); \ swapEnd = ((GLbyte *)(pc)) + (count)*__GLX_SIZE_FLOAT32;\ while (swapPC < swapEnd) { \ __GLX_SWAP_FLOAT(swapPC); \ swapPC += __GLX_SIZE_FLOAT32; \ } #define __GLX_SWAP_REPLY_HEADER() \ __GLX_SWAP_SHORT(&__glXReply.sequenceNumber); \ __GLX_SWAP_INT(&__glXReply.length); #define __GLX_SWAP_REPLY_RETVAL() \ __GLX_SWAP_INT(&__glXReply.retval) #define __GLX_SWAP_REPLY_SIZE() \ __GLX_SWAP_INT(&__glXReply.size) #endif /* !__GLX_unpack_h__ */