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Historically, we indented grammar production rules with a single 8-space
tab, but code inside of blocks used Mesa's 3-space indents.
This meant when editing code, you had to use an 8-space tab for the
first level of indentation, and 3-spaces after that. Unless you
specifically configure your editor to understand this, it will get the
indentation wrong on every single line you touch, which quickly devolves
into a colossal waste of time.
It's also inconsistent with every other file in the entire project.
This patch removes all tabs and moves to a consistent 3-space indent.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
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When working on a parser, it's very easy to accidentally introduce
new shift/reduce conflicts. Failing the build guarantees they'll
be noticed and fixed.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
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The single remaining shift/reduce conflict was the classic ELSE problem:
292 selection_rest_statement: statement . ELSE statement
293 | statement .
ELSE shift, and go to state 479
ELSE [reduce using rule 293 (selection_rest_statement)]
$default reduce using rule 293 (selection_rest_statement)
The correct behavior here is to shift, which is what happens by default.
However, resolving it explicitly will make it possible to fail the build
on new errors, making them much easier to detect.
The classic way to solve this is to use right associativity:
http://www.gnu.org/software/bison/manual/html_node/Non-Operators.html
Since there is no THEN token in GLSL, we need to fake one. %right THEN
creates a new terminal symbol; the %prec directive says to use the
precedence of that terminal.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Chris Forbes <chrisf@ijw.co.nz>
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Required by GL_ARB_shading_language_420pack.
Parts based on work done by Todd Previte and Ken Graunke, implementing
basic support for C-style initializers of arrays.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Explicit index support was added by commit 1256a5dc.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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If we didn't successfully parse the #version line, there's no point in
continuing with parsing and compiling: it's already failed.
Furthermore, it can actually be harmful: right after handling #version,
we call _mesa_glsl_initialize_types(), which checks state->es_shader and
language_version. If it isn't valid, it hits an assertion failure.
Fixes Piglit's "invalid-version-es." When processing "#version 110 es",
our code set state->es_shader and state->language_version = 110. It
then properly determined that this was invalid and flagged an error.
Since we continued anyway, we hit the assertion mentioned above.
NOTE: This is a candidate for the 9.1 branch.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
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Previously uniform blocks allowed for the 'uniform' keyword
to be used with members of a uniform blocks. With interface
blocks 'in' can be used on 'in' interface block members and
'out' can be used on 'out' interface block members.
The basic_interface_block rule will verify that the same
qualifier type is used with the block and each member.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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An interface block member may specify the type:
in {
in vec4 in_var_with_qualifier;
};
When specified with the member, it must match the same
type as interface block type.
It can also omit the qualifier:
uniform {
vec4 uniform_var_without_qualifier;
};
When the type is not specified with the member,
it will adopt the same type as the interface block.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Interface blocks in GLSL 150 allow an instance name to be used.
v2:
* use state->check_version
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Previously only 'uniform' was allowed for uniform blocks.
Now, in/out can be parsed, but it will only be allowed for
GLSL >= 150.
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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V2: - emit `sample` parameter properly for multisample texelFetch()
- fix spurious whitespace change
- introduce a new opcode ir_txf_ms rather than overloading the
existing ir_txf further. This makes doing the right thing in
the driver somewhat simpler.
V3: - fix weird whitespace
V4: - don't forget to include the new opcode in tex_opcode_strs[]
(thanks Kenneth for spotting this)
Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
[V2] Reviewed-by: Eric Anholt <eric@anholt.net>
[V2] Reviewed-by: Paul Berry <stereotype441@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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The size is parsed and stored in the AST, but it is not used yet.
Processing of the array size is added in the patch "glsl: Handle
instance array declarations"
v2: Update the commit message (suggested by Carl Worth). Add a comment
to ast_uniform_block::array_size (suggested by Paul Berry).
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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In GLSL ES 3.00 (and GLSL 1.50), uniform blocks can have an associated
"instance name", which essentially namespaces the variables inside.
This patch adds basic parsing for this new feature, but doesn't yet hook
it up to actually do anything yet.
It does not support for arrays of interface blocks; a later commit will
take care of that.
This change temporarily regresses the piglit test
interface-name-access-without-interface-name.vert. This shader failed
to compile before (the expected result), but it failed to compile for
the wrong reason. This is not a real regression.
v2: Add some comments to ast_uniform_block::instance_name. Suggested by
Paul Berry.
Reviewed-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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The existing code has a lot of duplication; the only difference between
the two cases is whether we merge in an additional layout qualifier.
Apparently creating a layout_qualifieropt rule that can be empty causes
a lot of conflicts and confusion. However, refactoring out the guts of
the ast_uniform_block creation works fine.
Reviewed-by: Carl Worth <cworth@cworth.org>
Reviewed-by: Chad Versace <chad.versace@linux.intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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I erroneously added this back in January 2011 in commit 88421589.
Looking at the commit message, I have no idea why I added it. It only
added non-array structure fields to the symbol table, so array structure
fields are treated correctly.
Fixes piglit tests structure-and-field-have-same-name.vert and
structure-and-field-have-same-name-nested.vert. It should also fix
WebGL conformance tests shader-with-non-reserved-words.
NOTE: This is a candidate for the stable release branches.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57622
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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This may not be strictly necessary, but every other rule in the grammar ends
with a semicolon. It also appears that this was supposed to be commited with
the original patch that changed this rule, but the wrong version of the patch
was accidentally pushed.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Note that while 'packed' is a reserved word in GLSL ES, row_major is not.
This means that we have to use the string-based matching for that.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
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Note that GLSL 1.00 is selected using "#version 100", so "#version 100
es" is prohibited.
v2: Check for GLES3 before allowing '#version 300 es'
v3: Make sure a correct language_version is set in
_mesa_glsl_parse_state::process_version_directive.
Signed-off-by: Paul Berry <stereotype441@gmail.com>
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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Version directive handling is going to have to be used within two
parser rules, one for desktop-style version directives (e.g. "#version
130") and one for the new ES-style version directive (e.g. "#version
300 es"), so this patch moves it to a function that can be called from
both rules.
No functional change.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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GLSL ES 3.00 adds the following keywords over GLSL 1.00: uint,
uvec[2-4], matNxM, centroid, flat, smooth, various samplers, layout,
switch, default, and case.
Additionally, it reserves a large number of keywords, some of which
were already reserved in versions of desktop GL that Mesa supports,
some of which are new to Mesa.
A few of the reserved keywords in GLSL ES 3.00 are keywords that are
supported in all other versions of GLSL: attribute, varying,
sampler1D, sampler1DShador, sampler2DRect, and sampler2DRectShadow.
This patch updates the lexer to handle all of the new keywords
correctly when the language being parsed is GLSL 3.00 ES.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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Previous to this patch, we were not very consistent about the errors
we generate when a shader tried to use a feature that is prohibited in
the current GLSL version. Some error messages failed to mention the
GLSL version currently in use (or did so inaccurately), and some error
messages failed to mention the first GLSL version in which the given
feature is allowed.
This patch reworks all of the error checks to use the check_version()
function, which produces error messages in a standard form
(approximately "$FEATURE forbidden in $CURRENT_GLSL_VERSION
($REQUIRED_GLSL_VERSION required).").
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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Fixes a bug where version_string would be left uninitialized if no
GLSL "#version" directive was used.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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This will be useful in generating more helpful error messages,
especially with the addition of GLSL 3.00 ES support.
[v2, idr]: Rename ctx parameter to mem_ctx
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
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Fixes es3conform's explicit_attrib_location_integer_constants.
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-and-tested-by: Matt Turner <mattst88@gmail.com>
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This adds all the new builtins + the new sampler types,
and hooks them up if the extension is supported.
v2: fix missing signatures for grad/lod
fix missing textureSize clarifications
fix compare vs starts with usage
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Fixes piglit
GL_ARB_uniform_buffer_object/compiler/extension-disabled-block.frag
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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I ended up having to add rallocing of the ast_type_qualifier in order
to avoid pulling in ast.h for glsl_parser_extras.h, because I wanted
to track an ast_type_qualifier in the state.
Fixes piglit ARB_uniform_buffer_object/row-major.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Yes, you get to say things like "layout(row_major, column_major)" and
get column major.
Part of fixing piglit ARB_uniform_buffer_object/row_major.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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The previous implementation required a flag in _mesa_glsl_parse_state
and line of code to initialize it for every version of the shading
language we intend to support. As we look to add 150, 330, 400, 410,
420, and beyond, this gets rather unwieldy.
This patch retains the switch statement (to reject, say, #version 111),
but removes all the bits. Code to check for ctx->API == API_OPENGL_CORE
could easily be added to the 110 and 120 cases to reject those.
v2: Use _mesa_is_desktop_gl to preserve the existing behavior in the
presence of the new API_OPENGL_CORE enumeration.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net> [v1]
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It was using state->Const.GLSL_100ES, which is set if the driver
supports ARB_ES2_compatibility or we're in ES2 mode. Instead, it should
use state->language_version, as that represents the actual GLSL version
of the shader being compiled.
Since the correct logic is < 120 && !100, just make it == 110.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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The OpenGL(R) ES Shading Language
Version 1.00 Revision 17 (12 May, 2009)
> 4.6.1 The Invariant Qualifier
> ... To force all output variables to be invariant, use the pragma
> #pragma STDGL invariant(all)
Signed-off-by: Oliver McFadden <oliver.mcfadden@linux.intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
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Fixes piglit layout-*-non-uniform and layout-*-within-block.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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This doesn't do anything with the uniform block declarations yet, so
usage of those uniforms finds them to be undeclared.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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I've been trying to derive from this for UBO support, and the slightly
obfuscated types were putting me over the edge.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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The got_one variable was set iff one of the bits in flags.i was set.
v2: Fix incorrect dropping of the ARB_conservative_depth warning.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> (v1)
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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The non-integer versions were already reserved in 1.30, but apparently
these were forgotten.
Fixes piglit glsl-1.40/compiler/reserved/
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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This adds index support to the GLSL compiler.
I'm not 100% sure of my approach here, esp without how output ordering
happens wrt location, index pairs, in the "mark" function.
Since current hw doesn't ever have a location > 0 with an index > 0,
we don't have to work out if the output ordering the hw requires is
location, index, location, index or location, location, index, index.
But we have no hw to know, so punt on it for now.
v2: index requires layout - catch and error
setup explicit index properly.
v3: drop idx_offset stuff, assume index follow location
Signed-off-by: Dave Airlie <airlied@redhat.com>
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The samplerBuffer type will be undefined in !glsl 1.40, and the
keyword is marked as reserved. The [iu]samplerBuffer types are not
marked as reserved pre-1.40, so they don't have separate tokens and
fall through to normal type handling.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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We have lexer recognition of a bunch of our types based on the
handling. This code was mapping those recognized tokens to an enum
and then to a string of their name. Just drop the enums and provide
the string directly in the parser.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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Nothing actually relied on them being mutable, and there was at least
one cast which discarded const qualifiers. The next patch would have
introduced many more.
Casting away const qualifiers should be avoided if at all possible.
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
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NOTE: This is a candidate for the 8.0 branch.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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Otherwise, the upcoming error messages said the location was 0:0(0).
NOTE: This is a candidate for the 8.0 branch.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
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