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author | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2011-10-10 17:43:39 +0200 |
commit | f4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch) | |
tree | 2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h | |
parent | a840692edc9c6d19cd7c057f68e39c7d95eb767d (diff) | |
download | nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.gz nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.tar.bz2 nx-libs-f4092abdf94af6a99aff944d6264bc1284e8bdd4.zip |
Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:
Imported nx-X11-3.1.0-1.tar.gz
into Git repository
Diffstat (limited to 'nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h')
-rwxr-xr-x | nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h b/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h new file mode 100755 index 000000000..77962c198 --- /dev/null +++ b/nx-X11/extras/Mesa/src/mesa/shader/slang/slang_storage.h @@ -0,0 +1,109 @@ +/* + * Mesa 3-D graphics library + * Version: 6.3 + * + * Copyright (C) 2005 Brian Paul All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#if !defined 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. +*/ +typedef enum slang_storage_type_ +{ + slang_stor_aggregate, + slang_stor_bool, + slang_stor_int, + slang_stor_float +} 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. +*/ +typedef struct slang_storage_array_ +{ + slang_storage_type type; + struct slang_storage_aggregate_ *aggregate; /* slang_stor_aggregate */ + unsigned int length; +} slang_storage_array; + +void slang_storage_array_construct (slang_storage_array *); +void 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. +*/ +typedef struct slang_storage_aggregate_ +{ + slang_storage_array *arrays; + unsigned int count; +} slang_storage_aggregate; + +void slang_storage_aggregate_construct (slang_storage_aggregate *); +void 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 *); + +/* + returns total size (in machine units) of the given aggregate + returns 0 on error +*/ +unsigned int _slang_sizeof_aggregate (const slang_storage_aggregate *); + +/* + 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 + +#endif + |