mirror of
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Set up infrastructure for installing an executable. Changes the standalone name to glslangValidator.
git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@22593 e7fa87d3-cd2b-0410-9028-fcbf551c1848
This commit is contained in:
John Kessenich
parent
53f3cc977d
commit
54f6e5661d
348
README.txt
348
README.txt
@ -1,263 +1,35 @@
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OpenGL Shading Language source readme for Window and Linux
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An OpenGL and OpenGL ES shader front end and validator.
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Version: Sept 20, 2005
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There are two components:
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1) A front-end library for programmatic parsing of GLSL/ESSL into an AST.
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Source Copyright
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----------------
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2) A standalone wrapper, glslangValidator, that can be used as a shader
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validation tool.
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Things left to do: See Todo.txt
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Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
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Copyright (C) 2012-2013 LunarG, Inc.
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All rights reserved.
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Execution
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---------
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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There are binaries in the Install/Windows and Install/Linux directories.
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Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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To use the standalone binary form, execute glslangValidator, and it will print
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a usage statement. Basic operation is to give it a file containing a shader,
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and it will print out warnings/errors and optionally an AST.
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Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the following
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disclaimer in the documentation and/or other materials provided
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with the distribution.
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The applied stage-specific rules are based on the file extension. Currently,
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either .frag or .vert, but soon to also include all stages.
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Neither the name of 3Dlabs Inc. Ltd. nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Changes since June 2005 Release
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-------------------------------
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- Some infrastructure is simplified, improved, and cleaned up. Details follow.
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- TPublicType is easier to setup and extend.
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- Constant values know their own types. Methods are added to set the
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constant values as the data members are now protected instead of public.
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Lots of code was cleaned up because of that.
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- Added support for an array object extension. Array constructors are
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allowed. Constant arrays can be declared and parse time constant folding
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and propagation is done through array objects. Extension GL_3DL_array_objects
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must be enabled to use the array objects.
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- Arrays and structures are handled more uniformly. Sizing is simplified and improved.
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- Changed the implementation of the way constants values were stored in
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the parse tree. Constants are now always flattened out. Constructors with
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constant values are represented with constant values directly. Example mat2(1)
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is stored as a constant node with values 1.0, 0.0, 0.0, 1.0. Earlier this
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was stored as an aggregate node with correct operator and a single constant
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value 1.0. This change caused a lot of code to be cleaned up and simplified.
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- Renamed ARB texture rectangle functions to match the final version of the specification.
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Changes since Feb 2005 Release
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------------------------------
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- Source now compiles on gcc 3.4.4.
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- Fixed constant folding for ternary operator.
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- Non-dereferenced arrays not allowed in constructors. Other semantic
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error checking on arrays such as ++array, array1 = array2.
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- Max allowed index for gl_TexCoord is gl_MaxTextureCoords - 1.
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- Raise an error when one of the string passed to the parser is a NULL
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pointer.
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- Parser code tested to be portable on STLport stl.
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- Detect error when preprocessor directives does not begin at the start
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of the line.
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Please feel free to submit any fixes to the parser code.
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Changes since Jan 2005 Release
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------------------------------
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- Relaxed grammar rules for ?: (ternary operator) to allow assignment
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expressions after the ':'.
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- Fixed the correct parsing of empty shader source string.
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- No longer raise an error when gl_Position is not written in a vertex
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shader. This is link time functionality.
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- Added some basic support for MSVC++6.0 to the extent that C++ standards
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are not violated.
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Changes since Sept 2004 Release
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-------------------------------
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- Memory usage by builtIn symbol table level is reduced to 1/4th of what
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was used earlier.
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- Built In symbol table level is split into two, the first level contains
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symbols that do not change and the second level is constructed per compile,
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based on the resource values specified by the driver. This required ShCompile
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method to take in a pointer to the resource values.
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- Correct handling of pragmas.
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- Fixed defects such as comma operator folding, swizzling allowed only with
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offsets from same set, texture look up functions appropriately split between
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vertex and fragment shaders, ternary operator type checking, preprocessor
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directives etc.
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- Linux build now use flex version 2.5.4 that comes with Redhat 9.0
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Changes since July 2004 Release
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-------------------------------
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- Structures when initialized both as a constant and a non constant were broken.
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Changes Since Apr 2004 Release
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-------------------------------
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- Added support for #extension and #version preprocessor directives.
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- Removed printf statements and instead dump messages on InfoSink.
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- Most of the source code is now thread safe except for some of the
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preprocessor code. Also For Linux, the per thread data clean up is yet to be
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implemented as it is not exactly known when the thread exits.
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- Fixed comma operator when used with constant initializer.
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- Added folding when constructors are called with constant values.
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- Correctly updated builtIn names for texture functions from
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texture{1|2}DShadow[Proj][Lod] to shadow{1|2}D[Proj][Lod].
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- Updated the built-in constant names as per latest GL2 specs.
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- Portable across more platforms.
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Changes Since Oct 2003 Release
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-------------------------------
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- Added new reserved keywords. Also reserved %=.
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- Fixed some bugs and memory leaks in the preprocessor.
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- Fixed name mangling for function names. Names also now include array sizes.
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- Fixed implementation of unsized arrays.
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- Constructors: Disallow matrices constructed from matrices, and unused
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arguments.
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Also fixed some cases like float(vec2) that were not working right.
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- TILDA -> TILDE.
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- Fixed structure qualifier semantics: they apply to variables declared,
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not the structure definition.
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Changes since May 2003 Release
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Source: Build and run on linux
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-------------------------------
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- Corrected some bugs in preprocessor.
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- Keeping track of maximum size of the array used in the source code.
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- Parameter passing during function call and keeping track of inout and out
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parameters.
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- Added some more built in functions.
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- Portability to Linux
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Changes Since April 2002 Release
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--------------------------------
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* Semantic changes to bring the implementation and spec closer together,
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and support issue resolution.
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* Some minor functionality completeness.
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- User function calls are more complete,
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- added the ^^ operator (logical exclusive or)
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- fixed variable scoping in if-else
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- no declarations in if-conditions
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- improved typing of field selectors
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- removed suffixes from literal constants
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- many smaller semantic changes to be in line with the current spec
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- added preprocessor
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- added non-scalar constants
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- added structures
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Changes since July 2002 Release
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-------------------------------
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Brought up to date with version 1.051 of the OpenGL Shading Language
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Specification. It is now almost complete. The list of detailed
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changes would be long, as the specification has changed extensively,
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and all missing functionality has been added.
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Procedure to Build on Windows
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-----------------------------
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Put this project in a path name without spaces.
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procedure To build using MS visual studio .Net.
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It has two projects.
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The glslang project must be compiled first, followed by the
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StandAlone project.
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1. The solution is StandAlone.sln. The two necessary
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projects are glslang.vcproj and StandAlone.vcproj,
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which devstudio will automatically open.
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2. You may have a missing header file, unistd.h. Create an empty one in
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some standard devstudio or SDK system include directory. (Bison/flex
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generate a #include <unistd.h>, this makes them happy.)
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3. Build the glslang project (in devstudio, right click the glslang project
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and build). This creates the glslang.dll and glslang.lib files needed to
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make the StandAlone compiler run. It leaves them in the StandAlone
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directory.
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4. Build the StandAlone project if you want to run the tests or run the
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compiler stand-alone.
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Running Stand Alone on Windows
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------------------------------
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The build process should create glslang.dll and StandAlone.exe. glslang.dll
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has an interface suitable for integration with an ICD. StandAlone.exe uses
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this interface to create a version of the compiler that can run outside
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the ICD environment.
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The stand-alone compiler is a Win32 console application, best executed
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from a command prompt.
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“cd” into the StandAlone directory, or a directory you've installed
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StandAlone.exe, the OglBuiltIns subdirectory, and glslang.dll into.
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The normal case will be to compile and link a pair of shaders like this:
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StandAlone -i <vertex-file>.vert <fragment-file>.frag
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where the following command line options are possible for StandAlone:
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i - dump parse tree
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m - dump linker output (nothing dumped in the source code provided)
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a - dump assembly code (nothing dumped in the source code provided)
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The applied compilation-language is based on the file extension.
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Give the full name of the files containing the shader source code.
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The output from running this will contain compile and link errors, as
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well as a textual version of the intermediate representation.
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Procedure to build and run on Linux
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-----------------------------------
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A simple bash script "BuildLinux.sh" is provided to do the build and run the test
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cases, or you may run the steps manually as described below:
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"cd" into StandAlone directory and run make. It will build all the dependency
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directories also. You can also go to the specific directories and do a make for each
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directory individually. Make sure that there exists a lib directory at the given
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path: glslang/MachineIndependent/lib where libglslang.so is stored.
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To compile glslang.l, flex version 2.5.31 is required. An executable of flex is
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provided in tools directory. To compile glslang.y, bison version 1.35 or higher is
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required. Most versions of Red Hat comes with bison 1.35.
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A simple bash script "BuildLinux.sh" is provided at the root directory
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to do the build and run a test cases. You will need a recent version of
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bison installed.
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Once the executable is generated, it needs to be dynamically linked with the
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shared object created in lib directory. To achieve that, we need to "cd" to
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shared object created in lib directory. To achieve that, "cd" to
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StandAlone directory to update the LD_LIBRARY_PATH as follows
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export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:./../glslang/MachineIndependent/lib
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@ -266,73 +38,47 @@ You can also update LD_LIBRARY_PATH in the .cshrc or .bashrc file, depending on
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the shell you are using. You will need to give the complete path of "lib" directory
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in .cshrc or .bashrc files.
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The normal case will be to compile and link a pair of shaders like this:
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Source: Build and run on Windows
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--------------------------------
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./StandAlone -i <vertex-file>.vert <fragment-file>.frag
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Current development is with Visual Studio verion 11 (2012). The solution
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file is in the project's root directory Standalone.sln.
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where the following command line options are possible for StandAlone:
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i - dump parse tree
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m - dump linker output (nothing dumped in the source code provided)
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a - dump assembly code (nothing dumped in the source code provided)
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Building the StandAlone project (the default) will create glslangValidate.exe and
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copy it into the Test directory and Install directory. This allows local
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test scripts to use either the debug or release version, whichever was
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built last.
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The applied compilation-language is based on the file extension.
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Give the full name of the files containing the shader source code.
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The output from running this will contain compile and link errors, as
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well as a textual version of the intermediate representation.
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Windows execution and testing is generally done from within a cygwin
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shell.
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To generate the dependencies, you can run "make depend".
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This step has already been done and need not be done again by the user.
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Note: Despite appearances, the use of a DLL is currently disabled; it
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simply makes a standalone executable from a statically linked library.
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To clean the ".o"s, ".a"s and ".so" generated by make, you can use "make clean".
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Basic Operation
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---------------
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- Initial lexical analysis is done be the preprocessor in
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MachineIndependent/Preprocessor, and then refined by a GLSL scanner
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in MachineIndependent/Scan.cpp. There is currently no use of flex.
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Notes for Understanding/Modifying the Code
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------------------------------------------
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* This is completely machine independent code. We have a working
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back-end card-specific compiler that is not present. Instead, a trivial
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back-end compiler is in the directory GenericCodeGen.
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* The main directory for parsing and intermediate representation is
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MachineIndependent.
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* Header files shared between machine independent parsing and the
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machine dependent compiling and linking are in include.
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* Header files shared between the compiler and an ICD are in public.
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* Merging with future updates will be easiest if initially you confine
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your changes to the GenericCodeGen directory.
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* To write a back-end compiler, see the next section on Basic Design.
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Basic Design
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------------
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1. Code is parsed by flex/bison, with the aid of a symbol table and an
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- Code is parsed using bison, with the aid of a symbol table and an AST
|
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intermediate representation. The symbol table is not passed on to
|
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the back-end; the intermediate representation stands on its own.
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|
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2. The intermediate representation is very high-level, and represented
|
||||
- The intermediate representation is very high-level, and represented
|
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as an in-memory tree. This serves to lose no information from the
|
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original program, and to have efficient transfer of the result from
|
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parsing to the back-end. In the intermediate representation,
|
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constants are propogated and folded, and some dead code is eliminated.
|
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parsing to the back-end. In the AST, constants are propogated and
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folded, and a very small amount of dead code is eliminated.
|
||||
|
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3. The primary algorithm of the back-end compiler is to traverse the
|
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To aid linking and reflection, the last top-level branch in the AST
|
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lists all global symbols.
|
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|
||||
- The primary algorithm of the back-end compiler is to traverse the
|
||||
tree (high-level intermediate representation), and create an internal
|
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object code representation. There is a query in the compiler interface
|
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to the ICD for retrieval of this object code.
|
||||
object code representation. There is an example of how to do this
|
||||
in MachineIndependent/intermOut.cpp.
|
||||
|
||||
4. Reduction of the tree to a linear byte-code style low-level intermediate
|
||||
- Reduction of the tree to a linear byte-code style low-level intermediate
|
||||
representation is likely a good way to generate fully optimized code.
|
||||
There is some possibility of standardizing such a byte code.
|
||||
|
||||
See these files to get started:
|
||||
|
||||
* IntermOut.cpp: this shows traversing the tree to generate output.
|
||||
* CodeGen.cpp: this shows the basic interface to the back-end compiler.
|
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* Link.cpp: this shows the basic interface to the linker.
|
||||
* Intermediate.h: to see the data structures backing the tree.
|
||||
|
||||
|
||||
@ -45,6 +45,12 @@
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<IntDir Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">StandAlone\UserM_Release\</IntDir>
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||||
<LinkIncremental Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">false</LinkIncremental>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<TargetName>glslangValidator</TargetName>
|
||||
</PropertyGroup>
|
||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
||||
<TargetName>glslangValidator</TargetName>
|
||||
</PropertyGroup>
|
||||
<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
||||
<ClCompile>
|
||||
<Optimization>Disabled</Optimization>
|
||||
@ -77,8 +83,8 @@
|
||||
<TypeLibraryName>UserM_Debug/StandAlone.tlb</TypeLibraryName>
|
||||
</Midl>
|
||||
<PostBuildEvent>
|
||||
<Message>move exe</Message>
|
||||
<Command>xcopy /y StandAlone\UserM_Debug\StandAlone.exe Test</Command>
|
||||
<Message>copy glslangValidator</Message>
|
||||
<Command>xcopy /y StandAlone\UserM_Debug\glslangValidator.exe Test</Command>
|
||||
</PostBuildEvent>
|
||||
<ResourceCompile>
|
||||
<PreprocessorDefinitions>_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
@ -131,8 +137,10 @@
|
||||
<TypeLibraryName>UserM_Release/StandAlone.tlb</TypeLibraryName>
|
||||
</Midl>
|
||||
<PostBuildEvent>
|
||||
<Message>move exe</Message>
|
||||
<Command>xcopy /y StandAlone\UserM_Release\StandAlone.exe test</Command>
|
||||
<Message>copy glslangValidator</Message>
|
||||
<Command>xcopy /y StandAlone\UserM_Release\glslangValidator.exe Test
|
||||
xcopy /y StandAlone\UserM_Release\glslangValidator.exe Install\Windows
|
||||
</Command>
|
||||
</PostBuildEvent>
|
||||
<ResourceCompile>
|
||||
<PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
|
||||
|
||||
@ -7,10 +7,12 @@ TARGETOBJECT=StandAlone.o
|
||||
|
||||
default: all
|
||||
|
||||
all: StandAlone
|
||||
all: glslangValidator
|
||||
|
||||
StandAlone: $(TARGETOBJECT) SHAREDOBJECT
|
||||
$(CC) -g -o $@ $(TARGETOBJECT) -L $(LIBPATH) -lglslang -lpthread -lm -lstdc++
|
||||
glslangValidator: $(TARGETOBJECT) SHAREDOBJECT
|
||||
$(CC) -g -o $@ $(TARGETOBJECT) -L $(LIBPATH) -lglslang -lpthread -lm -lstdc++
|
||||
cp $@ ../Test
|
||||
cp $@ ../Install/Linux
|
||||
|
||||
SHAREDOBJECT:
|
||||
cd $(OBJECTPATH); make all
|
||||
@ -23,7 +25,7 @@ SHAREDOBJECT:
|
||||
#
|
||||
.PHONY : clean
|
||||
clean :
|
||||
$(RM) *.o StandAlone
|
||||
$(RM) *.o glslangValidator ../Install/Linux/glslangValidator
|
||||
cd $(OBJECTPATH); make clean
|
||||
|
||||
depend:
|
||||
|
||||
@ -138,13 +138,15 @@ bool ProcessArguments(int argc, char* argv[])
|
||||
DebugOptions |= EDebugOpTexturePrototypes;
|
||||
break;
|
||||
default:
|
||||
usage();
|
||||
return false;
|
||||
}
|
||||
} else
|
||||
Worklist.add(std::string(argv[0]));
|
||||
}
|
||||
|
||||
if (Worklist.empty())
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
@ -187,8 +189,10 @@ int C_DECL main(int argc, char* argv[])
|
||||
// Init for for standalone
|
||||
glslang::InitGlobalLock();
|
||||
|
||||
if (! ProcessArguments(argc, argv))
|
||||
if (! ProcessArguments(argc, argv)) {
|
||||
usage();
|
||||
return EFailUsage;
|
||||
}
|
||||
|
||||
// TODO: finish threading, allow external control over number of threads
|
||||
const int NumThreads = 1;
|
||||
|
||||
@ -69,6 +69,11 @@ namespace glslang {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool empty()
|
||||
{
|
||||
return worklist.empty();
|
||||
}
|
||||
|
||||
protected:
|
||||
std::list<std::string> worklist;
|
||||
};
|
||||
|
||||
@ -1,5 +0,0 @@
|
||||
.\StandAlone.exe -i sample.vert > sample.vert.newout
|
||||
diff sample.vert.out sample.vert.newout
|
||||
|
||||
.\StandAlone.exe -i sample.frag > sample.frag.newout
|
||||
diff sample.frag.out sample.frag.newout
|
||||
7
Todo.txt
7
Todo.txt
@ -10,10 +10,11 @@ Testing
|
||||
- thread safety
|
||||
|
||||
Interfacing
|
||||
- Put glslang in a namespace
|
||||
- finish putting into a glslang namespace
|
||||
|
||||
Functionality
|
||||
- "const" compile-time constant propagation in the front-end has to be complete, for all built-in functions
|
||||
Functionality to Implement/Finish
|
||||
ESSL 3.0
|
||||
- "const" compile-time constant propagation in the front-end has to be complete, for all built-in functions
|
||||
GLSL 1.2
|
||||
- Handle multiple compilation units per stage
|
||||
- Allow initializers on uniform declarations. The value is set at link time.
|
||||
|
||||
@ -27,6 +27,8 @@ all: $(SHAREDOBJECT)
|
||||
$(SHAREDOBJECT): gen_glslang_tab.o $(OBJECTS) \
|
||||
$(LIBPREPROCESSOR) $(LIBCODEGEN) $(LIBOSDEPENDENT) $(LIBINITIALISATION)
|
||||
$(CC) -fPIC -shared -o $@ -rdynamic -Wl,-whole-archive $(OBJECTS) $(LIBPREPROCESSOR) $(LIBCODEGEN) $(LIBOSDEPENDENT) $(LIBINITIALISATION) gen_glslang_tab.o -Wl,-no-whole-archive
|
||||
cp $@ ../../Test
|
||||
cp $@ ../../Install/Linux
|
||||
|
||||
gen_glslang_tab.o : gen_glslang_tab.cpp
|
||||
$(CC) -fPIC -c $(INCLUDE) gen_glslang_tab.cpp -o $@
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user