}
}
}
- } else if (state->es_shader) {
- /* Section 10.17 of the GLSL ES 1.00 specification states that unsized
- * array declarations have been removed from the language.
- */
- _mesa_glsl_error(loc, state, "unsized array declarations are not "
- "allowed in GLSL ES 1.00");
}
const glsl_type *array_type = glsl_type::get_array_instance(base, length);
_mesa_glsl_shader_target_name(state->target));
}
+ /* Section 6.1.1 (Function Calling Conventions) of the GLSL 1.10 spec says:
+ *
+ * "However, the const qualifier cannot be used with out or inout."
+ *
+ * The same section of the GLSL 4.40 spec further clarifies this saying:
+ *
+ * "The const qualifier cannot be used with out or inout, or a
+ * compile-time error results."
+ */
+ if (is_parameter && qual->flags.q.constant && qual->flags.q.out) {
+ _mesa_glsl_error(loc, state,
+ "`const' may not be applied to `out' or `inout' "
+ "function parameters");
+ }
+
/* If there is no qualifier that changes the mode of the variable, leave
* the setting alone.
*/
earlier->type = var->type;
delete var;
var = NULL;
- } else if (state->ARB_fragment_coord_conventions_enable
+ } else if ((state->ARB_fragment_coord_conventions_enable ||
+ state->is_version(150, 0))
&& strcmp(var->name, "gl_FragCoord") == 0
&& earlier->type == var->type
&& earlier->mode == var->mode) {
/**
- * Do additional processing necessary for geometry shader input array
- * declarations (this covers both interface blocks arrays and input variable
- * arrays).
+ * Do additional processing necessary for geometry shader input declarations
+ * (this covers both interface blocks arrays and bare input variables).
*/
static void
handle_geometry_shader_input_decl(struct _mesa_glsl_parse_state *state,
num_vertices = vertices_per_prim(state->gs_input_prim_type);
}
- assert(var->type->is_array());
+ /* Geometry shader input variables must be arrays. Caller should have
+ * reported an error for this.
+ */
+ if (!var->type->is_array()) {
+ assert(state->error);
+
+ /* To avoid cascading failures, short circuit the checks below. */
+ return;
+ }
+
if (var->type->length == 0) {
/* Section 4.3.8.1 (Input Layout Qualifiers) of the GLSL 1.50 spec says:
*
* name of a known structure type. This is both invalid and weird.
* Emit an error.
*
+ * - The program text contained something like 'mediump float;'
+ * when the programmer probably meant 'precision mediump
+ * float;' Emit a warning with a description of what they
+ * probably meant to do.
+ *
* Note that if decl_type is NULL and there is a structure involved,
* there must have been some sort of error with the structure. In this
* case we assume that an error was already generated on this line of
*/
assert(this->type->specifier->structure == NULL || decl_type != NULL
|| state->error);
- if (this->type->specifier->structure == NULL) {
- if (decl_type != NULL) {
- _mesa_glsl_warning(&loc, state, "empty declaration");
- } else {
- _mesa_glsl_error(&loc, state,
- "invalid type `%s' in empty declaration",
- type_name);
- }
- }
- if (this->type->qualifier.precision != ast_precision_none &&
- this->type->specifier->structure != NULL) {
- _mesa_glsl_error(&loc, state, "precision qualifiers can't be applied "
- "to structures");
+ if (decl_type == NULL) {
+ _mesa_glsl_error(&loc, state,
+ "invalid type `%s' in empty declaration",
+ type_name);
+ } else if (this->type->qualifier.precision != ast_precision_none) {
+ if (this->type->specifier->structure != NULL) {
+ _mesa_glsl_error(&loc, state,
+ "precision qualifiers can't be applied "
+ "to structures");
+ } else {
+ static const char *const precision_names[] = {
+ "highp",
+ "highp",
+ "mediump",
+ "lowp"
+ };
+
+ _mesa_glsl_warning(&loc, state,
+ "empty declaration with precision qualifier, "
+ "to set the default precision, use "
+ "`precision %s %s;'",
+ precision_names[this->type->qualifier.precision],
+ type_name);
+ }
+ } else {
+ _mesa_glsl_warning(&loc, state, "empty declaration");
}
}
decl->identifier);
}
+ if (state->es_shader) {
+ const glsl_type *const t = (earlier == NULL)
+ ? var->type : earlier->type;
+
+ if (t->is_array() && t->length == 0)
+ /* Section 10.17 of the GLSL ES 1.00 specification states that
+ * unsized array declarations have been removed from the language.
+ * Arrays that are sized using an initializer are still explicitly
+ * sized. However, GLSL ES 1.00 does not allow array
+ * initializers. That is only allowed in GLSL ES 3.00.
+ *
+ * Section 4.1.9 (Arrays) of the GLSL ES 3.00 spec says:
+ *
+ * "An array type can also be formed without specifying a size
+ * if the definition includes an initializer:
+ *
+ * float x[] = float[2] (1.0, 2.0); // declares an array of size 2
+ * float y[] = float[] (1.0, 2.0, 3.0); // declares an array of size 3
+ *
+ * float a[5];
+ * float b[] = a;"
+ */
+ _mesa_glsl_error(& loc, state,
+ "unsized array declarations are not allowed in "
+ "GLSL ES");
+ }
+
/* If the declaration is not a redeclaration, there are a few additional
* semantic checks that must be applied. In addition, variable that was
* created for the declaration should be added to the IR stream.
"function `%s' return type has qualifiers", name);
}
+ /* Section 6.1 (Function Definitions) of the GLSL 1.20 spec says:
+ *
+ * "Arrays are allowed as arguments and as the return type. In both
+ * cases, the array must be explicitly sized."
+ */
+ if (return_type->is_array() && return_type->length == 0) {
+ YYLTYPE loc = this->get_location();
+ _mesa_glsl_error(& loc, state,
+ "function `%s' return type array must be explicitly "
+ "sized", name);
+ }
+
/* From page 17 (page 23 of the PDF) of the GLSL 1.20 spec:
*
* "[Sampler types] can only be declared as function parameters
* version.
*/
static bool
-is_valid_default_precision_type(const struct _mesa_glsl_parse_state *state,
- const char *type_name)
+is_valid_default_precision_type(const struct glsl_type *const type)
{
- const struct glsl_type *type = state->symbols->get_type(type_name);
if (type == NULL)
return false;
"arrays");
return NULL;
}
- if (!is_valid_default_precision_type(state, this->type_name)) {
+
+ const struct glsl_type *const type =
+ state->symbols->get_type(this->type_name);
+ if (!is_valid_default_precision_type(type)) {
_mesa_glsl_error(&loc, state,
- "default precision statements apply only to types "
+ "default precision statements apply only to "
"float, int, and sampler types");
return NULL;
}
struct _mesa_glsl_parse_state *state)
{
YYLTYPE loc = this->get_location();
+
+ /* Section 4.1.8 (Structures) of the GLSL 1.10 spec says:
+ *
+ * "Anonymous structures are not supported; so embedded structures must
+ * have a declarator. A name given to an embedded struct is scoped at
+ * the same level as the struct it is embedded in."
+ *
+ * The same section of the GLSL 1.20 spec says:
+ *
+ * "Anonymous structures are not supported. Embedded structures are not
+ * supported.
+ *
+ * struct S { float f; };
+ * struct T {
+ * S; // Error: anonymous structures disallowed
+ * struct { ... }; // Error: embedded structures disallowed
+ * S s; // Okay: nested structures with name are allowed
+ * };"
+ *
+ * The GLSL ES 1.00 and 3.00 specs have similar langauge and examples. So,
+ * we allow embedded structures in 1.10 only.
+ */
+ if (state->language_version != 110 && state->struct_specifier_depth != 0)
+ _mesa_glsl_error(&loc, state,
+ "embedded structure declartions are not allowed");
+
+ state->struct_specifier_depth++;
+
glsl_struct_field *fields;
unsigned decl_count =
ast_process_structure_or_interface_block(instructions,
}
}
+ state->struct_specifier_depth--;
+
/* Structure type definitions do not have r-values.
*/
return NULL;
*/
assert(declared_variables.is_empty());
+ /* From section 4.3.4 (Inputs) of the GLSL 1.50 spec:
+ *
+ * Geometry shader input variables get the per-vertex values written
+ * out by vertex shader output variables of the same names. Since a
+ * geometry shader operates on a set of vertices, each input varying
+ * variable (or input block, see interface blocks below) needs to be
+ * declared as an array.
+ */
+ if (state->target == geometry_shader && !this->is_array &&
+ var_mode == ir_var_shader_in) {
+ _mesa_glsl_error(&loc, state, "geometry shader inputs must be arrays");
+ }
+
/* Page 39 (page 45 of the PDF) of section 4.3.7 in the GLSL ES 3.00 spec
* says:
*
}
var->interface_type = block_type;
- if (state->target == geometry_shader)
+ if (state->target == geometry_shader && var_mode == ir_var_shader_in)
handle_geometry_shader_input_decl(state, loc, var);
state->symbols->add_variable(var);
instructions->push_tail(var);
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