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- Add patches to fix endianness issues on big endian platforms:

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* 0001-Fix-encoding-decoding-of-string-literals-for-big-end.patch
  * 0002-TIntermediate-promoteConstantUnion-fix-conversion-to.patch
  * 0003-Use-intermOut.cpp-s-IsNan-and-IsInfinity-for-parse-t.patch

OBS-URL: https://build.opensuse.org/package/show/KDE:Qt6/qt6-shadertools?expand=0&rev=13
This commit is contained in:
Christophe Giboudeaux 2021-12-10 19:53:19 +00:00 committed by Git OBS Bridge
parent 0fa065a805
commit 78325b4030
5 changed files with 414 additions and 0 deletions
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192
0001-Fix-encoding-decoding-of-string-literals-for-big-end.patch Normal file
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@ -0,0 +1,192 @@
From d19aa4a7fc68fe4472cca981a717f9181bc63723 Mon Sep 17 00:00:00 2001
From: Marius Hillenbrand <mhillen@linux.ibm.com>
Date: Tue, 19 Oct 2021 18:09:52 +0200
Subject: [PATCH 1/3] Fix encoding/decoding of string literals for big-endian
systems
Per SPIR-V spec, a string literal's UTF-8 octets are encoded packed into
words with little-endian convention. Explicitly perform that encoding
instead of assuming that the host system is little-endian.
Note that this change requires corresponding fixes in SPIRV-Tools.
Fixes #202
---
src/3rdparty/glslang/SPIRV/SPVRemapper.cpp | 18 ++++++---
src/3rdparty/glslang/SPIRV/disassemble.cpp | 47 ++++++++++++++--------
src/3rdparty/glslang/SPIRV/spvIR.h | 22 +++++-----
3 files changed, 52 insertions(+), 35 deletions(-)
diff --git a/src/3rdparty/glslang/SPIRV/SPVRemapper.cpp b/src/3rdparty/glslang/SPIRV/SPVRemapper.cpp
index 56d7f43..3d09c89 100644
--- a/src/3rdparty/glslang/SPIRV/SPVRemapper.cpp
+++ b/src/3rdparty/glslang/SPIRV/SPVRemapper.cpp
@@ -297,15 +297,21 @@ namespace spv {
std::string spirvbin_t::literalString(unsigned word) const
{
std::string literal;
+ const spirword_t * pos = spv.data() + word;
literal.reserve(16);
- const char* bytes = reinterpret_cast<const char*>(spv.data() + word);
-
- while (bytes && *bytes)
- literal += *bytes++;
-
- return literal;
+ do {
+ spirword_t word = *pos;
+ for (int i = 0; i < 4; i++) {
+ char c = word & 0xff;
+ if (c == '\0')
+ return literal;
+ literal += c;
+ word >>= 8;
+ }
+ pos++;
+ } while (true);
}
void spirvbin_t::applyMap()
diff --git a/src/3rdparty/glslang/SPIRV/disassemble.cpp b/src/3rdparty/glslang/SPIRV/disassemble.cpp
index 73c988c..74dd605 100644
--- a/src/3rdparty/glslang/SPIRV/disassemble.cpp
+++ b/src/3rdparty/glslang/SPIRV/disassemble.cpp
@@ -43,6 +43,7 @@
#include <stack>
#include <sstream>
#include <cstring>
+#include <utility>
#include "disassemble.h"
#include "doc.h"
@@ -100,6 +101,7 @@ protected:
void outputMask(OperandClass operandClass, unsigned mask);
void disassembleImmediates(int numOperands);
void disassembleIds(int numOperands);
+ std::pair<int, std::string> decodeString();
int disassembleString();
void disassembleInstruction(Id resultId, Id typeId, Op opCode, int numOperands);
@@ -290,31 +292,44 @@ void SpirvStream::disassembleIds(int numOperands)
}
}
-// return the number of operands consumed by the string
-int SpirvStream::disassembleString()
+// decode string from words at current position (non-consuming)
+std::pair<int, std::string> SpirvStream::decodeString()
{
- int startWord = word;
-
- out << " \"";
-
- const char* wordString;
+ std::string res;
+ int wordPos = word;
+ char c;
bool done = false;
+
do {
- unsigned int content = stream[word];
- wordString = (const char*)&content;
+ unsigned int content = stream[wordPos];
for (int charCount = 0; charCount < 4; ++charCount) {
- if (*wordString == 0) {
+ c = content & 0xff;
+ content >>= 8;
+ if (c == '\0') {
done = true;
break;
}
- out << *(wordString++);
+ res += c;
}
- ++word;
- } while (! done);
+ ++wordPos;
+ } while(! done);
+
+ return std::make_pair(wordPos - word, res);
+}
+
+// return the number of operands consumed by the string
+int SpirvStream::disassembleString()
+{
+ out << " \"";
+ std::pair<int, std::string> decoderes = decodeString();
+
+ out << decoderes.second;
out << "\"";
- return word - startWord;
+ word += decoderes.first;
+
+ return decoderes.first;
}
void SpirvStream::disassembleInstruction(Id resultId, Id /*typeId*/, Op opCode, int numOperands)
@@ -331,7 +346,7 @@ void SpirvStream::disassembleInstruction(Id resultId, Id /*typeId*/, Op opCode,
nextNestedControl = 0;
}
} else if (opCode == OpExtInstImport) {
- idDescriptor[resultId] = (const char*)(&stream[word]);
+ idDescriptor[resultId] = decodeString().second;
}
else {
if (resultId != 0 && idDescriptor[resultId].size() == 0) {
@@ -428,7 +443,7 @@ void SpirvStream::disassembleInstruction(Id resultId, Id /*typeId*/, Op opCode,
--numOperands;
// Get names for printing "(XXX)" for readability, *after* this id
if (opCode == OpName)
- idDescriptor[stream[word - 1]] = (const char*)(&stream[word]);
+ idDescriptor[stream[word - 1]] = decodeString().second;
break;
case OperandVariableIds:
disassembleIds(numOperands);
diff --git a/src/3rdparty/glslang/SPIRV/spvIR.h b/src/3rdparty/glslang/SPIRV/spvIR.h
index 486e80d..5249a5b 100755
--- a/src/3rdparty/glslang/SPIRV/spvIR.h
+++ b/src/3rdparty/glslang/SPIRV/spvIR.h
@@ -111,27 +111,23 @@ public:
void addStringOperand(const char* str)
{
- unsigned int word;
- char* wordString = (char*)&word;
- char* wordPtr = wordString;
- int charCount = 0;
+ unsigned int word = 0;
+ unsigned int shiftAmount = 0;
char c;
+
do {
c = *(str++);
- *(wordPtr++) = c;
- ++charCount;
- if (charCount == 4) {
+ word |= ((unsigned int)c) << shiftAmount;
+ shiftAmount += 8;
+ if (shiftAmount == 32) {
addImmediateOperand(word);
- wordPtr = wordString;
- charCount = 0;
+ word = 0;
+ shiftAmount = 0;
}
} while (c != 0);
// deal with partial last word
- if (charCount > 0) {
- // pad with 0s
- for (; charCount < 4; ++charCount)
- *(wordPtr++) = 0;
+ if (shiftAmount > 0) {
addImmediateOperand(word);
}
}
--
2.34.1

33
0002-TIntermediate-promoteConstantUnion-fix-conversion-to.patch Normal file
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@ -0,0 +1,33 @@
From 75e3ed99c61b1d201498b5a7fbb6498f902344e0 Mon Sep 17 00:00:00 2001
From: Marius Hillenbrand <mhillen@linux.ibm.com>
Date: Wed, 10 Nov 2021 18:10:58 +0100
Subject: [PATCH 2/3] TIntermediate::promoteConstantUnion(): fix conversion to
int8
The signedness of type char is implementation-defined in C++. The
conversion to (signed) int8 currently uses a cast to char, which is
undefined for negative values when the type char is implemented as
unsigned. Thus, fix to cast to "signed char", which has the intended
semantic on all implementations.
Fixes #2807
---
.../glslang/glslang/MachineIndependent/Intermediate.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp b/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
index 84b4c55..89538ea 100644
--- a/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
+++ b/src/3rdparty/glslang/glslang/MachineIndependent/Intermediate.cpp
@@ -3867,7 +3867,7 @@ TIntermTyped* TIntermediate::promoteConstantUnion(TBasicType promoteTo, TIntermC
case EbtFloat16: PROMOTE(setDConst, double, Get); break; \
case EbtFloat: PROMOTE(setDConst, double, Get); break; \
case EbtDouble: PROMOTE(setDConst, double, Get); break; \
- case EbtInt8: PROMOTE(setI8Const, char, Get); break; \
+ case EbtInt8: PROMOTE(setI8Const, signed char, Get); break; \
case EbtInt16: PROMOTE(setI16Const, short, Get); break; \
case EbtInt: PROMOTE(setIConst, int, Get); break; \
case EbtInt64: PROMOTE(setI64Const, long long, Get); break; \
--
2.34.1

177
0003-Use-intermOut.cpp-s-IsNan-and-IsInfinity-for-parse-t.patch Normal file
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@ -0,0 +1,177 @@
From 1c28979226b8bb5a61bcbfa9b2c1963072bc7df4 Mon Sep 17 00:00:00 2001
From: Marius Hillenbrand <mhillen@linux.ibm.com>
Date: Tue, 9 Nov 2021 16:31:22 +0100
Subject: [PATCH 3/3] Use intermOut.cpp's IsNan and IsInfinity for parse-time
constant folding (updated)
There were two implementations of isInf() and isNan(), in Constant.cpp
and in intermOut.cpp. The former only works on little-endian systems,
the latter is a wrapper for library functions and works regardless of
endianness. Move the second version into Common.h and adopt it in both
places. Thereby avoid the duplication and fix for big-endian systems.
A previous commit with the same intent and purpose had missed a required
header for builds on Windows.
On s390x, this fixes the test case
Glsl/CompileToAstTest.FromFile/constFold_frag.
Fixes #2802
---
src/3rdparty/glslang/glslang/Include/Common.h | 34 +++++++++++++++++++
.../glslang/MachineIndependent/Constant.cpp | 33 ++----------------
.../glslang/MachineIndependent/intermOut.cpp | 31 -----------------
3 files changed, 36 insertions(+), 62 deletions(-)
diff --git a/src/3rdparty/glslang/glslang/Include/Common.h b/src/3rdparty/glslang/glslang/Include/Common.h
index 115f6f7..5b2dae6 100644
--- a/src/3rdparty/glslang/glslang/Include/Common.h
+++ b/src/3rdparty/glslang/glslang/Include/Common.h
@@ -39,6 +39,11 @@
#include <algorithm>
#include <cassert>
+#ifdef _MSC_VER
+#include <cfloat>
+#else
+#include <cmath>
+#endif
#include <cstdio>
#include <cstdlib>
#include <list>
@@ -288,6 +293,35 @@ template <class T> bool IsMultipleOfPow2(T number, int powerOf2)
return ! (number & (powerOf2 - 1));
}
+inline bool IsInfinity(double x) {
+#ifdef _MSC_VER
+ switch (_fpclass(x)) {
+ case _FPCLASS_NINF:
+ case _FPCLASS_PINF:
+ return true;
+ default:
+ return false;
+ }
+#else
+ return std::isinf(x);
+#endif
+}
+
+inline bool IsNan(double x) {
+#ifdef _MSC_VER
+ switch (_fpclass(x)) {
+ case _FPCLASS_SNAN:
+ case _FPCLASS_QNAN:
+ return true;
+ default:
+ return false;
+ }
+#else
+ return std::isnan(x);
+#endif
+}
+
+
} // end namespace glslang
} // namespace QtShaderTools
diff --git a/src/3rdparty/glslang/glslang/MachineIndependent/Constant.cpp b/src/3rdparty/glslang/glslang/MachineIndependent/Constant.cpp
index 23c511e..1b23d68 100644
--- a/src/3rdparty/glslang/glslang/MachineIndependent/Constant.cpp
+++ b/src/3rdparty/glslang/glslang/MachineIndependent/Constant.cpp
@@ -46,35 +46,6 @@ namespace {
using namespace QtShaderTools;
using namespace glslang;
-typedef union {
- double d;
- int i[2];
-} DoubleIntUnion;
-
-// Some helper functions
-
-bool isNan(double x)
-{
- DoubleIntUnion u;
- // tough to find a platform independent library function, do it directly
- u.d = x;
- int bitPatternL = u.i[0];
- int bitPatternH = u.i[1];
- return (bitPatternH & 0x7ff80000) == 0x7ff80000 &&
- ((bitPatternH & 0xFFFFF) != 0 || bitPatternL != 0);
-}
-
-bool isInf(double x)
-{
- DoubleIntUnion u;
- // tough to find a platform independent library function, do it directly
- u.d = x;
- int bitPatternL = u.i[0];
- int bitPatternH = u.i[1];
- return (bitPatternH & 0x7ff00000) == 0x7ff00000 &&
- (bitPatternH & 0xFFFFF) == 0 && bitPatternL == 0;
-}
-
const double pi = 3.1415926535897932384626433832795;
} // end anonymous namespace
@@ -664,12 +635,12 @@ TIntermTyped* TIntermConstantUnion::fold(TOperator op, const TType& returnType)
case EOpIsNan:
{
- newConstArray[i].setBConst(isNan(unionArray[i].getDConst()));
+ newConstArray[i].setBConst(IsNan(unionArray[i].getDConst()));
break;
}
case EOpIsInf:
{
- newConstArray[i].setBConst(isInf(unionArray[i].getDConst()));
+ newConstArray[i].setBConst(IsInfinity(unionArray[i].getDConst()));
break;
}
diff --git a/src/3rdparty/glslang/glslang/MachineIndependent/intermOut.cpp b/src/3rdparty/glslang/glslang/MachineIndependent/intermOut.cpp
index e07cdfe..9478fd5 100644
--- a/src/3rdparty/glslang/glslang/MachineIndependent/intermOut.cpp
+++ b/src/3rdparty/glslang/glslang/MachineIndependent/intermOut.cpp
@@ -48,37 +48,6 @@
#endif
#include <cstdint>
-namespace {
-
-bool IsInfinity(double x) {
-#ifdef _MSC_VER
- switch (_fpclass(x)) {
- case _FPCLASS_NINF:
- case _FPCLASS_PINF:
- return true;
- default:
- return false;
- }
-#else
- return std::isinf(x);
-#endif
-}
-
-bool IsNan(double x) {
-#ifdef _MSC_VER
- switch (_fpclass(x)) {
- case _FPCLASS_SNAN:
- case _FPCLASS_QNAN:
- return true;
- default:
- return false;
- }
-#else
- return std::isnan(x);
-#endif
-}
-
-}
namespace QtShaderTools {
--
2.34.1

8
qt6-shadertools.changes
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@ -1,3 +1,11 @@
-------------------------------------------------------------------
Fri Dec 10 19:52:26 UTC 2021 - Christophe Giboudeaux <christophe@krop.fr>
- Add patches to fix endianness issues on big endian platforms:
* 0001-Fix-encoding-decoding-of-string-literals-for-big-end.patch
* 0002-TIntermediate-promoteConstantUnion-fix-conversion-to.patch
* 0003-Use-intermOut.cpp-s-IsNan-and-IsInfinity-for-parse-t.patch
-------------------------------------------------------------------
Wed Dec 1 10:06:27 UTC 2021 - Christophe Giboudeaux <christophe@krop.fr>

4
qt6-shadertools.spec
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@ -34,6 +34,10 @@ License: GPL-3.0-or-later
URL: https://www.qt.io
Source: https://download.qt.io/official_releases/qt/%{short_version}/%{real_version}%{tar_suffix}/submodules/%{tar_name}-%{real_version}%{tar_suffix}.tar.xz
Source99: qt6-shadertools-rpmlintrc
# PATCH-FIX-UPSTREAM Fix endianness issues on big endian platforms
Patch0: 0001-Fix-encoding-decoding-of-string-literals-for-big-end.patch
Patch1: 0002-TIntermediate-promoteConstantUnion-fix-conversion-to.patch
Patch2: 0003-Use-intermOut.cpp-s-IsNan-and-IsInfinity-for-parse-t.patch
BuildRequires: qt6-gui-private-devel
BuildRequires: cmake(Qt6Core)
BuildRequires: cmake(Qt6Gui)