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Add a new shader-versioning infrastructure capable of handling multiple profiles, desktop/ES, many versions, features coming and going in different versions across different profiles, and extensions.

Browse source 
NB: *Use* of this infrastructure is so far only skeletal.

Fixed a few typos and minor issues along the way.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@19951 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich 2012-12-13 00:05:26 +00:00
parent 5d3e2e35b6
commit 9fd55bd338
31 changed files with 1662 additions and 706 deletions
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161
glslang/MachineIndependent/Versions.cpp Normal file
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//
//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
//All rights reserved.
//
//Copyright (C) 2012 LunarG, Inc.
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//POSSIBILITY OF SUCH DAMAGE.
//
//
// Help manage multiple profiles, versions, extensions etc.
//
// These don't return error codes, as the presumption is parsing
// will always continue as if the feature were present, and there
// is no error recovery needed to enable that.
//
#include "ParseHelper.h"
char* StageName[EShLangCount] = {
"vertex",
"tessellation control",
"tessellation evaluation",
"geometry",
"fragment"
};
char* ProfileName[EProfileCount] = {
"none",
"core",
"compatibility",
"es"
};
//
// If only some profiles support a feature, use requireProfile() to specify
// which subset allows the feature. If the current profile is not present,
// give an error message.
//
void TParseContext::requireProfile(int line, EProfileMask profileMask, const char *featureDesc)
{
if (((1 << profile) & profileMask) == 0) {
error(line, "not supported with this profile:", featureDesc, ProfileName[profile]);
recover();
}
}
//
// If only some stages support a feature, use requireStage() to specify
// which subset allows the feature. If the current stage is not present,
// give an error message.
//
void TParseContext::requireStage(int line, EShLanguageMask languageMask, const char *featureDesc)
{
if (((1 << language) & languageMask) == 0) {
error(line, "not supported in this stage:", featureDesc, StageName[language]);
recover();
}
}
//
// Within a profile, if a feature requires a version level or extension, use
// ProfileRequires(). This only checks if the current profile matches
// the passed-in profile.
//
// one that takes multiple extensions
void TParseContext::profileRequires(int line, EProfile callingProfile, int minVersion, int numExtensions, const char* extensions[], const char *featureDesc)
{
if (profile == callingProfile) {
bool okay = false;
if (version >= minVersion)
okay = true;
for (int i = 0; i < numExtensions; ++i) {
TBehavior behavior = extensionBehavior[extensions[i]];
switch (behavior) {
case EBhWarn:
infoSink.info.message(EPrefixWarning, ("extension " + TString(extensions[i]) + " is being used for " + featureDesc).c_str(), line);
// fall through
case EBhRequire:
case EBhEnable:
okay = true;
break;
}
}
if (! okay) {
error(line, "not supported for this version or the enabled extensions", featureDesc, "");
recover();
}
}
}
// one that takes a single extension
void TParseContext::profileRequires(int line, EProfile callingProfile, int minVersion, const char* extension, const char *featureDesc)
{
profileRequires(line, callingProfile, minVersion, 1, &extension, featureDesc);
}
//
// Within a profile, see if a feature is deprecated and error or warn based on whether
// a future compatibility context is being use.
//
void TParseContext::checkDeprecated(int line, EProfile callingProfile, int depVersion, const char *featureDesc)
{
if (profile == callingProfile) {
if (version >= depVersion) {
if (futureCompatibility) {
error(line, "deprecated, may be removed in future release", featureDesc, "");
recover();
} else {
infoSink.info.message(EPrefixWarning, (TString(featureDesc) + " being used, but may be removed in future release").c_str(), line);
}
}
}
}
//
// Within a profile, see if a feature has now been removed and if so, give an error.
// The version argument is the first version no longer having the feature.
//
void TParseContext::requireNotRemoved(int line, EProfile callingProfile, int removedVersion, const char *featureDesc)
{
if (profile == callingProfile) {
if (version >= removedVersion) {
const int maxSize = 60;
char buf[maxSize];
sprintf_s(buf, maxSize, "%s profile; removed in version %d", ProfileName[profile], removedVersion);
error(line, "no longer supported in", featureDesc, buf);
recover();
}
}
}