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Signed-off-by: Matt Turner <[email protected]>
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Invalid shaders containing the character % at an unexpected location
would cause Bison to call yyerror with a message of:
syntax error, unexpected '%'
Bison expects yyerror() to take a string, while _mesa_glsl_error() is a
printf-style function. This hit the classic printf string escape issue:
_mesa_glsl_error(loc, state, "unexpected '%'"); // invalid!
_mesa_glsl_error(loc, state, "%s", "unexpected '%'"); // correct.
This caused assertion failures after ralloc_asprintf_append called
vsnprintf to determine the length of the text that would be printed:
vsnprintf would see the invalid format and return -1, an invalid length.
The solution is to define a proper yyerror() wrapper function that calls
_mesa_glsl_error with the "%s". Since we compile with -p "_mesa_glsl",
yyerror is defined as:
#define yyerror _mesa_glsl_error
So we have to #undef yyerror in order to be able to declare it.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43564
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Acked-by: Paul Berry <[email protected]>
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v2: updated an error message
Reviewed-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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Addresses the warnings:
warning: a `;' might be needed at the end of action code
warning: future versions of Bison will not add the `;'
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We now tie the grammar to the ctors of the ASTs they reference.
This requires that we actually have definitions of the ctors.
In addition, we also need to define "print" and "hir" methods for the AST
classes. The Print methods are pretty simple to flesh out. However, at this
stage of the development, we simply stub out the "hir" methods and flesh
them out later.
Also, since actual class instances get returned by the productions in the
grammar, we also need to designate the type of the productions that
reference those instances.
Reviewed-by: Kenneth Graunke <[email protected]>
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The grammar is modified to support switch statements. Rather than follow the
grammar in the appendix, which allows case labels to be placed ANYWHERE
as a regular statement, we follow the development of the grammar as
described in the body of the GLSL spec.
In this variation, the switch statement has a body which consists of a list
of case statements. A case statement is preceded by a list of case labels and
ends with a list of statements.
Reviewed-by: Kenneth Graunke <[email protected]>
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This extension introduces a new sampler type: samplerExternalOES.
texture2D (and texture2DProj) can be used to do a texture look up in an
external texture.
Reviewed-by: Brian Paul <[email protected]>
Acked-by: Jakob Bornecrantz <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
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It's the same as GL_AMD_conservative_depth. The specs have slight
differences in wording, but don't differ in content or behavior.
Signed-off-by: Kenneth Graunke <[email protected]>
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Unlike C++, empty declarations such as
float;
should be valid. The spec is not explicit about this actually.
Some apps that generate their shader sources may rely on this. This was
noted when porting one of them to Linux from Windows.
Reviewed-by: Chad Versace <[email protected]>
Note: this is a candidate for the 7.11 branch.
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SCons has built-in support for .ll and .yy, but not .lpp and .ypp. Since
there's no real benefit to using the old names, change them.
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