* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
-#if !defined SLANG_STORAGE_H
+#ifndef SLANG_STORAGE_H
#define SLANG_STORAGE_H
#include "slang_compile.h"
-#if defined __cplusplus
-extern "C" {
-#endif
/*
- Program variable data storage is kept completely transparent to the front-end compiler. It is
- up to the back-end how the data is actually allocated. The slang_storage_type enum
- provides the basic information about how the memory is interpreted. This abstract piece
- of memory is called a data slot. A data slot of a particular type has a fixed size.
-
- For now, only the three basic types are supported, that is bool, int and float. Other built-in
- types like vector or matrix can easily be decomposed into a series of basic types.
-*/
+ * Program variable data storage is kept completely transparent to the
+ * front-end compiler. It is up to the back-end how the data is
+ * actually allocated. The slang_storage_type enum provides the basic
+ * information about how the memory is interpreted. This abstract
+ * piece of memory is called a data slot. A data slot of a particular
+ * type has a fixed size.
+ *
+ * For now, only the three basic types are supported, that is bool,
+ * int and float. Other built-in types like vector or matrix can
+ * easily be decomposed into a series of basic types.
+ *
+ * If the vec4 module is enabled, 4-component vectors of floats are
+ * used when possible. 4x4 matrices are constructed of 4 vec4 slots.
+ */
typedef enum slang_storage_type_
{
- slang_stor_aggregate,
- slang_stor_bool,
- slang_stor_int,
- slang_stor_float
+ /* core */
+ SLANG_STORE_AGGREGATE,
+ SLANG_STORE_BOOL,
+ SLANG_STORE_INT,
+ SLANG_STORE_FLOAT,
+ /* vec4 */
+ SLANG_STORE_VEC4
} slang_storage_type;
-/*
- The slang_storage_array structure groups data slots of the same type into an array. This
- array has a fixed length. Arrays are required to have a size equal to the sum of sizes of its
- elements. They are also required to support indirect addressing. That is, if B references
- first data slot in the array, S is the size of the data slot and I is the integral index that
- is not known at compile time, B+I*S references I-th data slot.
-
- This structure is also used to break down built-in data types that are not supported directly.
- Vectors, like vec3, are constructed from arrays of their basic types. Matrices are formed of
- an array of column vectors, which are in turn processed as other vectors.
-*/
+
+/**
+ * The slang_storage_array structure groups data slots of the same
+ * type into an array. This array has a fixed length. Arrays are
+ * required to have a size equal to the sum of sizes of its
+ * elements. They are also required to support indirect
+ * addressing. That is, if B references first data slot in the array,
+ * S is the size of the data slot and I is the integral index that is
+ * not known at compile time, B+I*S references I-th data slot.
+ *
+ * This structure is also used to break down built-in data types that
+ * are not supported directly. Vectors, like vec3, are constructed
+ * from arrays of their basic types. Matrices are formed of an array
+ * of column vectors, which are in turn processed as other vectors.
+ */
typedef struct slang_storage_array_
{
- slang_storage_type type;
- struct slang_storage_aggregate_ *aggregate; /* slang_stor_aggregate */
- unsigned int length;
+ slang_storage_type type;
+ struct slang_storage_aggregate_ *aggregate;
+ GLuint length;
} slang_storage_array;
-void slang_storage_array_construct (slang_storage_array *);
-void slang_storage_array_destruct (slang_storage_array *);
+GLboolean slang_storage_array_construct (slang_storage_array *);
+GLvoid slang_storage_array_destruct (slang_storage_array *);
-/*
- The slang_storage_aggregate structure relaxes the indirect addressing requirement for
- slang_storage_array structure. Aggregates are always accessed statically - its member
- addresses are well-known at compile time. For example, user-defined types are implemented as
- aggregates. Aggregates can collect data of a different type.
-*/
+
+/**
+ * The slang_storage_aggregate structure relaxes the indirect
+ * addressing requirement for slang_storage_array
+ * structure. Aggregates are always accessed statically - its member
+ * addresses are well-known at compile time. For example, user-defined
+ * types are implemented as aggregates. Aggregates can collect data of
+ * a different type.
+ */
typedef struct slang_storage_aggregate_
{
- slang_storage_array *arrays;
- unsigned int count;
+ slang_storage_array *arrays;
+ GLuint count;
} slang_storage_aggregate;
-void slang_storage_aggregate_construct (slang_storage_aggregate *);
-void slang_storage_aggregate_destruct (slang_storage_aggregate *);
+GLboolean slang_storage_aggregate_construct (slang_storage_aggregate *);
+GLvoid slang_storage_aggregate_destruct (slang_storage_aggregate *);
-int _slang_aggregate_variable (slang_storage_aggregate *, struct slang_type_specifier_ *,
- struct slang_operation_ *, struct slang_function_scope_ *, slang_struct_scope *,
- slang_variable_scope *);
-/*
- returns total size (in machine units) of the given aggregate
- returns 0 on error
-*/
-unsigned int _slang_sizeof_aggregate (const slang_storage_aggregate *);
+extern GLboolean
+_slang_aggregate_variable(slang_storage_aggregate *agg,
+ slang_type_specifier *spec,
+ GLuint array_len,
+ slang_function_scope *funcs,
+ slang_struct_scope *structs,
+ slang_variable_scope *vars,
+ slang_atom_pool *atoms);
/*
- converts structured aggregate to a flat one, with arrays of generic type being
- one-element long
- returns 1 on success
- returns 0 otherwise
-*/
-int _slang_flatten_aggregate (slang_storage_aggregate *, const slang_storage_aggregate *);
-
-#ifdef __cplusplus
-}
-#endif
+ * Returns the size (in machine units) of the given storage type.
+ * It is an error to pass-in SLANG_STORE_AGGREGATE.
+ * Returns 0 on error.
+ */
+extern GLuint
+_slang_sizeof_type (slang_storage_type);
+
+
+/**
+ * Returns total size (in machine units) of the given aggregate.
+ * Returns 0 on error.
+ */
+extern GLuint
+_slang_sizeof_aggregate (const slang_storage_aggregate *);
+
+
+#if 0
+/**
+ * Converts structured aggregate to a flat one, with arrays of generic
+ * type being one-element long. Returns GL_TRUE on success. Returns
+ * GL_FALSE otherwise.
+ */
+extern GLboolean
+_slang_flatten_aggregate (slang_storage_aggregate *,
+ const slang_storage_aggregate *);
#endif
+#endif /* SLANG_STORAGE_H */
projects / mesa.git / blobdiff