This CL adds the necessary configuration to build glslang inside a
Chromium checkout. Two build warnings were fixed in the process to
make things compile.
1) On some old versions of MSVC:
glslang\MachineIndependent\Constant.cpp(187): warning C4056: overflow in floating-point constant arithmetic
On this platform the definition of INFINITY is as follows:
#ifndef _HUGE_ENUF
#define _HUGE_ENUF 1e+300 // _HUGE_ENUF*_HUGE_ENUF must overflow
#endif
#define INFINITY ((float)(_HUGE_ENUF * _HUGE_ENUF))
Moving the negation outside the cast seems to resolve that issue.
2) Some Linux compilers were unhappy with lines 226/227
glslang/MachineIndependent/Constant.cpp: In member function 'virtual glslang::TIntermTyped* glslang::TIntermConstantUnion::fold(glslang::TOperator, const glslang::TIntermTyped*) const':
glslang/MachineIndependent/Constant.cpp:226:99: error: integer overflow in expression [-Werror=overflow]
else if (rightUnionArray[i].getIConst() == -1 && leftUnionArray[i].getIConst() == -(int)0x80000000)
^~~~~~~~~~~~~~~~
glslang/MachineIndependent/Constant.cpp:227:48: error: integer overflow in expression [-Werror=overflow]
newConstArray[i].setIConst(-(int)0x80000000);
^~~~~~~~~~~~~~~~
Moving the negation to the right side of the cast made those happy, but then some Windows compilers were unhappy:
glslang\MachineIndependent\Constant.cpp(226): warning C4146: unary minus operator applied to unsigned type, result still unsigned
glslang\MachineIndependent\Constant.cpp(227): warning C4146: unary minus operator applied to unsigned type, result still unsigned
which required adding on the "ll" suffix.
3) Android builds where unhappy with line 242:
glslang/MachineIndependent/Constant.cpp:242:100: error: comparison of integers of different signs: 'long long' and 'unsigned long long' [-Werror,-Wsign-compare]
else if (rightUnionArray[i].getI64Const() == -1 && leftUnionArray[i].getI64Const() == -0x8000000000000000ll)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~
1 error generated.
Adding an explicit (long long) cast resolved this.
And the negation needs to be on the right side of the cast otherwise linux
builds are unhappy as in (2).
4) Android builds are unhappy with out of order initializers:
glslang/MachineIndependent/reflection.h:60:84: error: field 'type' will be initialized after field 'stages' [-Werror,-Wreorder]
glDefineType(pGLDefineType), size(pSize), index(pIndex), counterIndex(-1), type(pType.clone()), stages(EShLanguageMask(0)) { }
^
1 error generated.
Change-Id: Ic9a05fa7912498284885113d8b051f93f822f62b
Fixes#854. But, only good if we are not trying to use the same
texture for both shadow and non-shadow constructors.
Force the type of the texture to have 'shadow' set when it is
constructed with a samplerShadow.
This is one step in providing full linker functionality for creating
correct SPIR-V from multiple compilation units for the same stage.
(This was the only remaining "hard" part. The rest should be simple.)
These introduce limited support for 8/16-bit types such that they can only be accessed in buffer memory and converted to/from 32-bit types.
Contributed from Khronos-internal work.
John Kessenich
John Kessenich
Ashwin Lele
Dan Sinclair
Chao Chen
Norbert Garnys
Jeff Bolz
Corentin Wallez
otakuto
Daniel Koch
t.jung
dmpakas