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#ifndef __GLX_packrender_h__
#define __GLX_packrender_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.
*/
#include "glxclient.h"
/*
** The macros in this header convert the client machine's native data types to
** wire protocol data types. The header is part of the porting layer of the
** client library, and it is intended that hardware vendors will rewrite this
** header to suit their own machines.
*/
/*
** Pad a count of bytes to the nearest multiple of 4. The X protocol
** transfers data in 4 byte quantities, so this macro is used to
** insure the right amount of data being sent.
*/
#define __GLX_PAD(a) (((a)+3) & ~3)
/*
** Network size parameters
*/
#define sz_double 8
/* Setup for all commands */
#define __GLX_DECLARE_VARIABLES() \
struct glx_context *gc; \
GLubyte *pc, *pixelHeaderPC; \
GLuint compsize, cmdlen
#define __GLX_LOAD_VARIABLES() \
gc = __glXGetCurrentContext(); \
pc = gc->pc; \
/* Muffle compilers */ \
cmdlen = 0; (void)cmdlen; \
compsize = 0; (void)compsize; \
pixelHeaderPC = 0; (void)pixelHeaderPC
/*
** Variable sized command support macro. This macro is used by calls
** that are potentially larger than __GLX_SMALL_RENDER_CMD_SIZE.
** Because of their size, they may not automatically fit in the buffer.
** If the buffer can't hold the command then it is flushed so that
** the command will fit in the next buffer.
*/
#define __GLX_BEGIN_VARIABLE(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode)
#define __GLX_BEGIN_VARIABLE_LARGE(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode)
#define __GLX_BEGIN_VARIABLE_WITH_PIXEL(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode); \
pc += __GLX_RENDER_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode); \
pc += __GLX_RENDER_LARGE_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_WITH_PIXEL_3D(opcode,size) \
if (pc + (size) > gc->bufEnd) { \
pc = __glXFlushRenderBuffer(gc, pc); \
} \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode); \
pc += __GLX_RENDER_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_3D_HDR_SIZE
#define __GLX_BEGIN_VARIABLE_LARGE_WITH_PIXEL_3D(opcode,size) \
pc = __glXFlushRenderBuffer(gc, pc); \
__GLX_PUT_LONG(0,size); \
__GLX_PUT_LONG(4,opcode); \
pc += __GLX_RENDER_LARGE_HDR_SIZE; \
pixelHeaderPC = pc; \
pc += __GLX_PIXEL_3D_HDR_SIZE
/*
** Fixed size command support macro. This macro is used by calls that
** are never larger than __GLX_SMALL_RENDER_CMD_SIZE. Because they
** always fit in the buffer, and because the buffer promises to
** maintain enough room for them, we don't need to check for space
** before doing the storage work.
*/
#define __GLX_BEGIN(opcode,size) \
__GLX_PUT_SHORT(0,size); \
__GLX_PUT_SHORT(2,opcode)
/*
** Finish a rendering command by advancing the pc. If the pc is now past
** the limit pointer then there is no longer room for a
** __GLX_SMALL_RENDER_CMD_SIZE sized command, which will break the
** assumptions present in the __GLX_BEGIN macro. In this case the
** rendering buffer is flushed out into the X protocol stream (which may
** or may not do I/O).
*/
#define __GLX_END(size) \
pc += size; \
if (pc > gc->limit) { \
(void) __glXFlushRenderBuffer(gc, pc); \
} else { \
gc->pc = pc; \
}
/* Array copy macros */
#define __GLX_MEM_COPY(dest,src,bytes) \
if (src && dest) \
memcpy(dest, src, bytes)
/* Single item copy macros */
#define __GLX_PUT_CHAR(offset,a) \
*((INT8 *) (pc + offset)) = a
#define __GLX_PUT_SHORT(offset,a) \
*((INT16 *) (pc + offset)) = a
#define __GLX_PUT_LONG(offset,a) \
*((INT32 *) (pc + offset)) = a
#define __GLX_PUT_FLOAT(offset,a) \
*((FLOAT32 *) (pc + offset)) = a
#ifdef __GLX_ALIGN64
/*
** This can certainly be done better for a particular machine
** architecture!
*/
#define __GLX_PUT_DOUBLE(offset,a) \
__GLX_MEM_COPY(pc + offset, &a, 8)
#else
#define __GLX_PUT_DOUBLE(offset,a) \
*((FLOAT64 *) (pc + offset)) = a
#endif
#define __GLX_PUT_CHAR_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT8)
#define __GLX_PUT_SHORT_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT16)
#define __GLX_PUT_LONG_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_INT32)
#define __GLX_PUT_FLOAT_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_FLOAT32)
#define __GLX_PUT_DOUBLE_ARRAY(offset,a,alen) \
__GLX_MEM_COPY(pc + offset, a, alen * __GLX_SIZE_FLOAT64)
#endif /* !__GLX_packrender_h__ */
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