diff options
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/ast_to_hir.cpp | 75 |
1 files changed, 41 insertions, 34 deletions
diff --git a/src/glsl/ast_to_hir.cpp b/src/glsl/ast_to_hir.cpp index 897505c6053..3b38dcfde69 100644 --- a/src/glsl/ast_to_hir.cpp +++ b/src/glsl/ast_to_hir.cpp @@ -3202,6 +3202,41 @@ validate_identifier(const char *identifier, YYLTYPE loc, } } +static bool +precision_qualifier_allowed(const glsl_type *type) +{ + /* Precision qualifiers apply to floating point, integer and sampler + * types. + * + * Section 4.5.2 (Precision Qualifiers) of the GLSL 1.30 spec says: + * "Any floating point or any integer declaration can have the type + * preceded by one of these precision qualifiers [...] Literal + * constants do not have precision qualifiers. Neither do Boolean + * variables. + * + * Section 4.5 (Precision and Precision Qualifiers) of the GLSL 1.30 + * spec also says: + * + * "Precision qualifiers are added for code portability with OpenGL + * ES, not for functionality. They have the same syntax as in OpenGL + * ES." + * + * Section 8 (Built-In Functions) of the GLSL ES 1.00 spec says: + * + * "uniform lowp sampler2D sampler; + * highp vec2 coord; + * ... + * lowp vec4 col = texture2D (sampler, coord); + * // texture2D returns lowp" + * + * From this, we infer that GLSL 1.30 (and later) should allow precision + * qualifiers on sampler types just like float and integer types. + */ + return type->is_float() + || type->is_integer() + || type->is_record() + || type->is_sampler(); +} ir_rvalue * ast_declarator_list::hir(exec_list *instructions, @@ -3689,41 +3724,13 @@ ast_declarator_list::hir(exec_list *instructions, } - /* Precision qualifiers apply to floating point, integer and sampler - * types. - * - * Section 4.5.2 (Precision Qualifiers) of the GLSL 1.30 spec says: - * "Any floating point or any integer declaration can have the type - * preceded by one of these precision qualifiers [...] Literal - * constants do not have precision qualifiers. Neither do Boolean - * variables. - * - * Section 4.5 (Precision and Precision Qualifiers) of the GLSL 1.30 - * spec also says: - * - * "Precision qualifiers are added for code portability with OpenGL - * ES, not for functionality. They have the same syntax as in OpenGL - * ES." - * - * Section 8 (Built-In Functions) of the GLSL ES 1.00 spec says: - * - * "uniform lowp sampler2D sampler; - * highp vec2 coord; - * ... - * lowp vec4 col = texture2D (sampler, coord); - * // texture2D returns lowp" - * - * From this, we infer that GLSL 1.30 (and later) should allow precision - * qualifiers on sampler types just like float and integer types. + /* If a precision qualifier is allowed on a type, it is allowed on + * an array of that type. */ - if (this->type->qualifier.precision != ast_precision_none - && !var->type->is_float() - && !var->type->is_integer() - && !var->type->is_record() - && !var->type->is_sampler() - && !(var->type->is_array() - && (var->type->fields.array->is_float() - || var->type->fields.array->is_integer()))) { + if (!(this->type->qualifier.precision == ast_precision_none + || precision_qualifier_allowed(var->type) + || (var->type->is_array() + && precision_qualifier_allowed(var->type->fields.array)))) { _mesa_glsl_error(&loc, state, "precision qualifiers apply only to floating point" |