233 lines
8.2 KiB
C
233 lines
8.2 KiB
C
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/*
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** Copyright 1995-2095, Silicon Graphics, Inc.
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** All Rights Reserved.
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**
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** This is UNPUBLISHED PROPRIETARY SOURCE CODE of Silicon Graphics, Inc.;
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** the contents of this file may not be disclosed to third parties, copied or
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** duplicated in any form, in whole or in part, without the prior written
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** permission of Silicon Graphics, Inc.
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**
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** RESTRICTED RIGHTS LEGEND:
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** Use, duplication or disclosure by the Government is subject to restrictions
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** as set forth in subdivision (c)(1)(ii) of the Rights in Technical Data
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** and Computer Software clause at DFARS 252.227-7013, and/or in similar or
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** successor clauses in the FAR, DOD or NASA FAR Supplement. Unpublished -
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** rights reserved under the Copyright Laws of the United States.
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*/
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#include "glslib.h"
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#define __GLS_HEAD_LARGE_BYTES sizeof(__GLSbinCommandHead_large)
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GLboolean __glsReader_call_bin(__GLSreader *inoutReader) {
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GLubyte *pc;
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GLubyte *pcNext;
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GLuint word;
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__GLSdecodeBinFunc *const dispatchDecode = (
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__GLS_CONTEXT->dispatchDecode_bin
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);
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GLubyte *pcLimit;
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if (
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inoutReader->readPtr + __GLS_HEAD_LARGE_BYTES > inoutReader->readTail &&
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!__glsReader_fillBuf(inoutReader, __GLS_HEAD_LARGE_BYTES, GL_TRUE)
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) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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return GL_FALSE;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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for (;;) {
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if (word = *(GLuint *)pc) {
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pcNext = pc + (__GLS_COUNT_SMALL(word) << 2);
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word = __glsMapOpcode(__GLS_OP_SMALL(word));
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if (pcNext > pcLimit) {
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inoutReader->readPtr = pc;
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if (__GLS_CONTEXT->abortMode) break;
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if (!__glsReader_fillBuf(
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inoutReader, (size_t)(pcNext - pc + __GLS_HEAD_LARGE_BYTES), GL_TRUE
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)) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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} else if (pcNext == pc) {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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} else if (!__glsOpcodeString[word]) {
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__GLS_CALL_UNSUPPORTED_COMMAND(__GLS_CONTEXT);
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pc = pcNext;
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} else {
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#ifndef __GLS_PLATFORM_WIN32
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// DrewB
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dispatchDecode[word](pc + 4);
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#else
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dispatchDecode[word](__GLS_CONTEXT, pc + 4);
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#endif
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pc = pcNext;
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}
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} else if (word = __GLS_HEAD_LARGE(pc)->opLarge) {
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word = __glsMapOpcode(word);
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pcNext = pc + (__GLS_HEAD_LARGE(pc)->countLarge << 2);
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if (word == GLS_OP_glsEndGLS) {
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inoutReader->readPtr = pcNext;
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return GL_TRUE;
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} else if (pcNext > pcLimit) {
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inoutReader->readPtr = pc;
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if (__GLS_CONTEXT->abortMode) break;
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if (!__glsReader_fillBuf(
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inoutReader, (size_t)((ULONG_PTR)(pcNext - pc + __GLS_HEAD_LARGE_BYTES)), GL_TRUE
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)) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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} else if (pcNext == pc) {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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} else if (!__glsOpcodeString[word]) {
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__GLS_CALL_UNSUPPORTED_COMMAND(__GLS_CONTEXT);
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pc = pcNext;
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} else {
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#ifndef __GLS_PLATFORM_WIN32
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// DrewB
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dispatchDecode[word](pc + 12);
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#else
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dispatchDecode[word](__GLS_CONTEXT, pc + 12);
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#endif
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pc = pcNext;
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}
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} else {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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}
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return GL_FALSE;
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}
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GLboolean __glsReader_call_bin_swap(__GLSreader *inoutReader) {
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GLubyte *pc;
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GLubyte *pcNext;
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GLuint word;
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const __GLSdecodeBinFunc *const dispatchDecode = (
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__glsDispatchDecode_bin_swap
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);
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GLubyte *pcLimit;
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if (
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inoutReader->readPtr + __GLS_HEAD_LARGE_BYTES > inoutReader->readTail &&
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!__glsReader_fillBuf(inoutReader, __GLS_HEAD_LARGE_BYTES, GL_TRUE)
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) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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return GL_FALSE;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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for (;;) {
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if (__GLS_CONTEXT->abortMode) {
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inoutReader->readPtr = pc;
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break;
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} else if (*(GLuint *)pc) {
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__glsSwap2(pc);
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__glsSwap2(pc + 2);
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word = *(GLuint*)pc;
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pcNext = pc + (__GLS_COUNT_SMALL(word) << 2);
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word = __glsMapOpcode(__GLS_OP_SMALL(word));
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if (pcNext > pcLimit) {
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inoutReader->readPtr = pc;
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if (!__glsReader_fillBuf(
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inoutReader, (size_t)((ULONG_PTR)(pcNext - pc + __GLS_HEAD_LARGE_BYTES)), GL_TRUE
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)) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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__glsSwap2(pc);
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__glsSwap2(pc + 2);
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} else if (pcNext == pc) {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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} else if (!__glsOpcodeString[word]) {
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__GLS_CALL_UNSUPPORTED_COMMAND(__GLS_CONTEXT);
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pc = pcNext;
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} else {
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#ifndef __GLS_PLATFORM_WIN32
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// DrewB
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dispatchDecode[word](pc + 4);
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#else
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dispatchDecode[word](__GLS_CONTEXT, pc + 4);
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#endif
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pc = pcNext;
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}
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} else if (__GLS_HEAD_LARGE(pc)->opLarge) {
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__glsSwap4(&__GLS_HEAD_LARGE(pc)->opLarge);
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__glsSwap4(&__GLS_HEAD_LARGE(pc)->countLarge);
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word = __glsMapOpcode(__GLS_HEAD_LARGE(pc)->opLarge);
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pcNext = pc + (__GLS_HEAD_LARGE(pc)->countLarge << 2);
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if (word == GLS_OP_glsEndGLS) {
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inoutReader->readPtr = pcNext;
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return GL_TRUE;
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} else if (pcNext > pcLimit) {
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inoutReader->readPtr = pc;
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if (!__glsReader_fillBuf(
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inoutReader, (size_t)((ULONG_PTR)(pcNext - pc + __GLS_HEAD_LARGE_BYTES)), GL_TRUE
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)) {
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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pc = inoutReader->readPtr;
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pcLimit = inoutReader->readTail - __GLS_HEAD_LARGE_BYTES;
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__glsSwap4(&__GLS_HEAD_LARGE(pc)->opLarge);
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__glsSwap4(&__GLS_HEAD_LARGE(pc)->countLarge);
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} else if (pcNext == pc) {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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} else if (!__glsOpcodeString[word]) {
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__GLS_CALL_UNSUPPORTED_COMMAND(__GLS_CONTEXT);
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pc = pcNext;
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} else {
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#ifndef __GLS_PLATFORM_WIN32
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// DrewB
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dispatchDecode[word](pc + 12);
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#else
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dispatchDecode[word](__GLS_CONTEXT, pc + 12);
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#endif
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pc = pcNext;
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}
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} else {
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inoutReader->readPtr = pc;
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__GLS_RAISE_ERROR(GLS_DECODE_ERROR);
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break;
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}
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}
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return GL_FALSE;
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}
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GLSenum __glsReader_readBeginGLS_bin(
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__GLSreader *inoutReader, __GLSversion *outVersion
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) {
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if (__glsReader_fillBuf(
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inoutReader, sizeof(__GLSbinCommand_BeginGLS), GL_FALSE
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)) {
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const GLSenum outType = __glsBinCommand_BeginGLS_getType(
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(__GLSbinCommand_BeginGLS *)inoutReader->readPtr, outVersion
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);
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if (outType != GLS_NONE) {
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inoutReader->readPtr += sizeof(__GLSbinCommand_BeginGLS);
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}
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return outType;
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} else {
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return GLS_NONE;
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}
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}
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