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/*
* Copyright 2009, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file contains the declarations for the functions in the
// O3D COLLADA conditioner namespace. These functions do most of
// the actual work of conditioning and packagaging a DAE file for use
// in O3D.
#ifndef O3D_IMPORT_CROSS_COLLADA_CONDITIONER_H_
#define O3D_IMPORT_CROSS_COLLADA_CONDITIONER_H_
#include "core/cross/types.h"
#include "compiler/technique/technique_structures.h"
class FCDEffect;
class FCDEffectProfileFX;
class FCDocument;
class FUUri;
class FilePath;
namespace o3d {
class ColladaZipArchive;
class ServiceLocator;
class ColladaConditioner {
public:
explicit ColladaConditioner(ServiceLocator* service_locator);
~ColladaConditioner();
// This function conditions the given document for use in O3D. This
// mainly includes checking that the referenced shaders compile
// against both the Cg (all platforms) and D3D (windows only)
// runtimes, and converting the shaders to the common shader
// language used by O3D. The converts all the shaders to inline
// "code" shaders instead of "included" shaders. It also handles
// converting "NV_Import" shaders produced by 3dsMax to something
// o3d can read. Returns false on failure. If archive is non-NULL,
// then it attempts to read shader files from the give zip archive
// instead of from the disk.
bool ConditionDocument(FCDocument* doc, ColladaZipArchive* archive);
// This takes the given shader file and rewrites it to have the
// proper form for O3D. If the archive parameter is non-NULL, then
// the input file is read from the archive instead of from the
// regular filesystem.
bool RewriteShaderFile(ColladaZipArchive* archive,
const FilePath& in_filename,
const FilePath& out_filename,
SamplerStateList* sampler_list,
String* vs_entry,
String* ps_entry);
// This test-compiles the given shader source with the HLSL
// compiler, if there is one available on the platform. This
// function is implemented separately for each platform. If there
// is no HLSL compiler available on this platform, this function
// returns 'true'.
bool CompileHLSL(const String& shader_source,
const String& vs_entry,
const String& ps_entry);
// This test-compiles the given shader source with the Cg compiler,
// if there is one available on the platform. This function is
// implemented separately for each platform. If there is no Cg
// compiler available on this platform, this function returns
// 'true'.
bool CompileCg(const FilePath& filename,
const String& shader_source,
const String& vs_entry,
const String& ps_entry);
protected:
// This preprocesses the given file using the Cgc compiler. It
// doesn't compile the shader, it just preprocesses it. This is
// implemented separately for each platform, since it invokes the
// compiler as a separate process.
bool PreprocessShaderFile(const FilePath& in_filename,
const FilePath& out_filename);
// This takes the given COLLADA shader source code and rewrites it
// to have the proper form for O3D. It finds the entry points and
// sets vs_entry and ps_entry to what it finds.
bool RewriteShader(const String& shader_source_in,
String* shader_source_out,
const FilePath& in_filename,
SamplerStateList* sampler_list,
String* vs_entry,
String* ps_entry);
// Handle all the embedded shaders in the document.
bool HandleEmbeddedShaders(FCDEffect* collada_effect,
FCDEffectProfileFX* profile_fx,
ColladaZipArchive* archive);
bool HandleNVImport(FCDocument* doc,
FCDEffect* collada_effect,
const FUUri& original_uri,
ColladaZipArchive* archive);
private:
ServiceLocator* service_locator_;
DISALLOW_COPY_AND_ASSIGN(ColladaConditioner);
};
} // namespace o3d
#endif // O3D_IMPORT_CROSS_COLLADA_CONDITIONER_H_
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