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Fix parsing of precision qualifiers

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This causes the following tests to pass:

     glslparsertest/glsl2/precision-02.vert
     glslparsertest/glsl2/precision-04.vert
     glslparsertest/glsl2/precision-06.vert

This causes the following test to fail.  This shader was previously
failing to compile, but it was failing for the wrong reasons.

     glslparsertest/glsl2/precision-03.vert
This commit is contained in:
Ian Romanick 2010-06-07 18:55:41 -07:00
parent 15d162d7b1
commit 9bcb67bdc4
1 changed files with 45 additions and 7 deletions
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52
glsl_parser.ypp
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@ -94,7 +94,7 @@
%token MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN
%token SUB_ASSIGN
%token INVARIANT
%token HIGH_PRECISION MEDIUM_PRECISION LOW_PRECISION PRECISION
%token LOWP MEDIUMP HIGHP PRECISION
%token VERSION EXTENSION LINE PRAGMA COLON EOL INTERFACE OUTPUT
@ -105,7 +105,7 @@
%token LONG SHORT DOUBLE HALF FIXED UNSIGNED INPUT OUPTUT
%token HVEC2 HVEC3 HVEC4 DVEC2 DVEC3 DVEC4 FVEC2 FVEC3 FVEC4
%token SAMPLER2DRECT SAMPLER3DRECT SAMPLER2DRECTSHADOW
%token SIZEOF CAST NAMESPACE USING LOWP MEDIUMP HIGHP
%token SIZEOF CAST NAMESPACE USING
%type <identifier> variable_identifier
%type <node> statement
@ -234,11 +234,19 @@ extension_statement:
external_declaration_list:
external_declaration
{
state->translation_unit.push_tail(& $1->link);
/* FINISHME: The NULL test is only required because 'precision'
* FINISHME: statements are not yet supported.
*/
if ($1 != NULL)
state->translation_unit.push_tail(& $1->link);
}
| external_declaration_list external_declaration
{
state->translation_unit.push_tail(& $2->link);
/* FINISHME: The NULL test is only required because 'precision'
* FINISHME: statements are not yet supported.
*/
if ($2 != NULL)
state->translation_unit.push_tail(& $2->link);
}
;
@ -999,9 +1007,39 @@ basic_type_specifier_nonarray:
;
precision_qualifier:
HIGH_PRECISION { $$ = ast_precision_high; }
| MEDIUM_PRECISION { $$ = ast_precision_medium; }
| LOW_PRECISION { $$ = ast_precision_low; }
HIGHP {
if (state->language_version < 130)
_mesa_glsl_error(& @1, state,
"precission qualifier forbidden "
"in GLSL %d.%d (1.30 or later "
"required)\n",
state->language_version / 100,
state->language_version % 100);
$$ = ast_precision_high;
}
| MEDIUMP {
if (state->language_version < 130)
_mesa_glsl_error(& @1, state,
"precission qualifier forbidden "
"in GLSL %d.%d (1.30 or later "
"required)\n",
state->language_version / 100,
state->language_version % 100);
$$ = ast_precision_medium;
}
| LOWP {
if (state->language_version < 130)
_mesa_glsl_error(& @1, state,
"precission qualifier forbidden "
"in GLSL %d.%d (1.30 or later "
"required)\n",
state->language_version / 100,
state->language_version % 100);
$$ = ast_precision_low;
}
;
struct_specifier: