#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#ifndef _MSC_VER
+#include <strings.h>
+#endif
#include <assert.h>
#include "ast.h"
%token AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN
%token MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN
%token SUB_ASSIGN
-%token INVARIANT
+%token INVARIANT PRECISE
%token LOWP MEDIUMP HIGHP SUPERP PRECISION
%token VERSION_TOK EXTENSION LINE COLON EOL INTERFACE OUTPUT
*/
%token ASM CLASS UNION ENUM TYPEDEF TEMPLATE THIS PACKED_TOK GOTO
%token INLINE_TOK NOINLINE PUBLIC_TOK STATIC EXTERN EXTERNAL
-%token LONG_TOK SHORT_TOK DOUBLE_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK OUPTUT
+%token LONG_TOK SHORT_TOK DOUBLE_TOK HALF FIXED_TOK UNSIGNED INPUT_TOK
%token HVEC2 HVEC3 HVEC4 DVEC2 DVEC3 DVEC4 FVEC2 FVEC3 FVEC4
%token SAMPLER3DRECT
%token SIZEOF CAST NAMESPACE USING
| PRAGMA_OPTIMIZE_OFF EOL
| PRAGMA_INVARIANT_ALL EOL
{
- if (!state->is_version(120, 100)) {
+ /* Pragma invariant(all) cannot be used in a fragment shader.
+ *
+ * Page 27 of the GLSL 1.20 spec, Page 53 of the GLSL ES 3.00 spec:
+ *
+ * "It is an error to use this pragma in a fragment shader."
+ */
+ if (state->is_version(120, 300) &&
+ state->stage == MESA_SHADER_FRAGMENT) {
+ _mesa_glsl_error(& @1, state,
+ "pragma `invariant(all)' cannot be used "
+ "in a fragment shader.");
+ } else if (!state->is_version(120, 100)) {
_mesa_glsl_warning(& @1, state,
"pragma `invariant(all)' not supported in %s "
"(GLSL ES 1.00 or GLSL 1.20 required)",
if ($2 != NULL)
state->translation_unit.push_tail(& $2->link);
}
+ | external_declaration_list extension_statement {
+ if (!state->allow_extension_directive_midshader) {
+ _mesa_glsl_error(& @2, state,
+ "#extension directive is not allowed "
+ "in the middle of a shader");
+ YYERROR;
+ }
+ }
;
variable_identifier:
$$ = $2;
$$.flags.q.constant = 1;
}
+ | PRECISE parameter_qualifier
+ {
+ if ($2.flags.q.precise)
+ _mesa_glsl_error(&@1, state, "duplicate precise qualifier");
+
+ $$ = $2;
+ $$.flags.q.precise = 1;
+ }
| parameter_direction_qualifier parameter_qualifier
{
if (($1.flags.q.in || $1.flags.q.out) && ($2.flags.q.in || $2.flags.q.out))
_mesa_glsl_error(&@1, state, "duplicate in/out/inout qualifier");
if (!state->ARB_shading_language_420pack_enable && $2.flags.q.constant)
- _mesa_glsl_error(&@1, state, "const must be specified before "
- "in/out/inout");
+ _mesa_glsl_error(&@1, state, "in/out/inout must come after const "
+ "or precise");
$$ = $1;
$$.merge_qualifier(&@1, state, $2);
$$->declarations.push_tail(&decl->link);
}
+ | PRECISE variable_identifier
+ {
+ void *ctx = state;
+ ast_declaration *decl = new(ctx) ast_declaration($2, NULL, NULL);
+ decl->set_location(@2);
+
+ $$ = new(ctx) ast_declarator_list(NULL);
+ $$->set_location_range(@1, @2);
+ $$->precise = true;
+
+ $$->declarations.push_tail(&decl->link);
+ }
;
fully_specified_type:
}
}
+ if (state->stage == MESA_SHADER_GEOMETRY) {
+ if (match_layout_qualifier("stream", $1, state) == 0 &&
+ state->check_explicit_attrib_stream_allowed(& @3)) {
+ $$.flags.q.stream = 1;
+
+ if ($3 < 0) {
+ _mesa_glsl_error(& @3, state,
+ "invalid stream %d specified", $3);
+ YYERROR;
+ } else {
+ $$.flags.q.explicit_stream = 1;
+ $$.stream = $3;
+ }
+ }
+ }
+
static const char * const local_size_qualifiers[3] = {
"local_size_x",
"local_size_y",
memset(& $$, 0, sizeof($$));
$$.flags.q.invariant = 1;
}
+ | PRECISE
+ {
+ memset(& $$, 0, sizeof($$));
+ $$.flags.q.precise = 1;
+ }
| auxiliary_storage_qualifier
| storage_qualifier
| interpolation_qualifier
* Each qualifier's rule ensures that the accumulated qualifiers on the right
* side don't contain any that must appear on the left hand side.
* For example, when processing a storage qualifier, we check that there are
- * no auxiliary, interpolation, layout, or invariant qualifiers to the right.
+ * no auxiliary, interpolation, layout, invariant, or precise qualifiers to the right.
*/
+ | PRECISE type_qualifier
+ {
+ if ($2.flags.q.precise)
+ _mesa_glsl_error(&@1, state, "duplicate \"precise\" qualifier");
+
+ $$ = $2;
+ $$.flags.q.precise = 1;
+ }
| INVARIANT type_qualifier
{
if ($2.flags.q.invariant)
_mesa_glsl_error(&@1, state, "duplicate \"invariant\" qualifier");
- if ($2.has_layout()) {
+ if (!state->ARB_shading_language_420pack_enable && $2.flags.q.precise)
_mesa_glsl_error(&@1, state,
- "\"invariant\" cannot be used with layout(...)");
- }
+ "\"invariant\" must come after \"precise\"");
$$ = $2;
$$.flags.q.invariant = 1;
+
+ /* GLSL ES 3.00 spec, section 4.6.1 "The Invariant Qualifier":
+ *
+ * "Only variables output from a shader can be candidates for invariance.
+ * This includes user-defined output variables and the built-in output
+ * variables. As only outputs can be declared as invariant, an invariant
+ * output from one shader stage will still match an input of a subsequent
+ * stage without the input being declared as invariant."
+ */
+ if (state->es_shader && state->language_version >= 300 && $$.flags.q.in)
+ _mesa_glsl_error(&@1, state, "invariant qualifiers cannot be used with shader inputs");
}
| interpolation_qualifier type_qualifier
{
if ($2.has_interpolation())
_mesa_glsl_error(&@1, state, "duplicate interpolation qualifier");
- if ($2.has_layout()) {
- _mesa_glsl_error(&@1, state, "interpolation qualifiers cannot be used "
- "with layout(...)");
- }
-
- if (!state->ARB_shading_language_420pack_enable && $2.flags.q.invariant) {
+ if (!state->ARB_shading_language_420pack_enable &&
+ ($2.flags.q.precise || $2.flags.q.invariant)) {
_mesa_glsl_error(&@1, state, "interpolation qualifiers must come "
- "after \"invariant\"");
+ "after \"precise\" or \"invariant\"");
}
$$ = $1;
}
| layout_qualifier type_qualifier
{
- /* The GLSL 1.50 grammar indicates that a layout(...) declaration can be
- * used standalone or immediately before a storage qualifier. It cannot
- * be used with interpolation qualifiers or invariant. There does not
- * appear to be any text indicating that it must come before the storage
- * qualifier, but always seems to in examples.
+ /* In the absence of ARB_shading_language_420pack, layout qualifiers may
+ * appear no later than auxiliary storage qualifiers. There is no
+ * particularly clear spec language mandating this, but in all examples
+ * the layout qualifier precedes the storage qualifier.
+ *
+ * We allow combinations of layout with interpolation, invariant or
+ * precise qualifiers since these are useful in ARB_separate_shader_objects.
+ * There is no clear spec guidance on this either.
*/
if (!state->ARB_shading_language_420pack_enable && $2.has_layout())
_mesa_glsl_error(&@1, state, "duplicate layout(...) qualifiers");
- if ($2.flags.q.invariant)
- _mesa_glsl_error(&@1, state, "layout(...) cannot be used with "
- "the \"invariant\" qualifier");
-
- if ($2.has_interpolation()) {
- _mesa_glsl_error(&@1, state, "layout(...) cannot be used with "
- "interpolation qualifiers");
- }
-
$$ = $1;
$$.merge_qualifier(&@1, state, $2);
}
}
if (!state->ARB_shading_language_420pack_enable &&
- ($2.flags.q.invariant || $2.has_interpolation() || $2.has_layout())) {
+ ($2.flags.q.precise || $2.flags.q.invariant ||
+ $2.has_interpolation() || $2.has_layout())) {
_mesa_glsl_error(&@1, state, "auxiliary storage qualifiers must come "
"just before storage qualifiers");
}
_mesa_glsl_error(&@1, state, "duplicate storage qualifier");
if (!state->ARB_shading_language_420pack_enable &&
- ($2.flags.q.invariant || $2.has_interpolation() || $2.has_layout() ||
- $2.has_auxiliary_storage())) {
+ ($2.flags.q.precise || $2.flags.q.invariant || $2.has_interpolation() ||
+ $2.has_layout() || $2.has_auxiliary_storage())) {
_mesa_glsl_error(&@1, state, "storage qualifiers must come after "
- "invariant, interpolation, layout and auxiliary "
+ "precise, invariant, interpolation, layout and auxiliary "
"storage qualifiers");
}
{
memset(& $$, 0, sizeof($$));
$$.flags.q.out = 1;
+
+ if (state->stage == MESA_SHADER_GEOMETRY &&
+ state->has_explicit_attrib_stream()) {
+ /* Section 4.3.8.2 (Output Layout Qualifiers) of the GLSL 4.00
+ * spec says:
+ *
+ * "If the block or variable is declared with the stream
+ * identifier, it is associated with the specified stream;
+ * otherwise, it is associated with the current default stream."
+ */
+ $$.flags.q.stream = 1;
+ $$.flags.q.explicit_stream = 0;
+ $$.stream = state->out_qualifier->stream;
+ }
}
| UNIFORM
{
;
/*
- * siwtch_statement grammar is based on the syntax described in the body
+ * switch_statement grammar is based on the syntax described in the body
* of the GLSL spec, not in it's appendix!!!
*/
switch_statement:
if (!block->layout.merge_qualifier(& @1, state, $1)) {
YYERROR;
}
+
+ foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
+ ast_type_qualifier& qualifier = member->type->qualifier;
+ if (qualifier.flags.q.stream && qualifier.stream != block->layout.stream) {
+ _mesa_glsl_error(& @1, state,
+ "stream layout qualifier on "
+ "interface block member does not match "
+ "the interface block (%d vs %d)",
+ qualifier.stream, block->layout.stream);
+ YYERROR;
+ }
+ }
$$ = block;
}
;
block->layout.flags.i |= block_interface_qualifier;
+ if (state->stage == MESA_SHADER_GEOMETRY &&
+ state->has_explicit_attrib_stream()) {
+ /* Assign global layout's stream value. */
+ block->layout.flags.q.stream = 1;
+ block->layout.flags.q.explicit_stream = 0;
+ block->layout.stream = state->out_qualifier->stream;
+ }
+
foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
ast_type_qualifier& qualifier = member->type->qualifier;
if ((qualifier.flags.i & interface_type_mask) == 0) {
}
if (!state->out_qualifier->merge_qualifier(& @1, state, $1))
YYERROR;
+
+ /* Allow future assigments of global out's stream id value */
+ state->out_qualifier->flags.q.explicit_stream = 0;
}
$$ = NULL;
}
projects / mesa.git / blobdiff