CrystalSpace

Public API Reference

csplugincommon/shader/shaderplugin.h

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00001 /*
00002   Copyright (C) 2003 by Marten Svanfeldt
00003 
00004   This library is free software; you can redistribute it and/or
00005   modify it under the terms of the GNU Library General Public
00006   License as published by the Free Software Foundation; either
00007   version 2 of the License, or (at your option) any later version.
00008 
00009   This library is distributed in the hope that it will be useful,
00010   but WITHOUT ANY WARRANTY; without even the implied warranty of
00011   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00012   Library General Public License for more details.
00013 
00014   You should have received a copy of the GNU Library General Public
00015   License along with this library; if not, write to the Free
00016   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00017 */
00018 
00019 #ifndef __CS_SHADERPLUGIN_H__
00020 #define __CS_SHADERPLUGIN_H__
00021 
00026 #include "csutil/scf.h"
00027 #include "csutil/strhash.h"
00028 
00029 #include "ivideo/shader/shader.h"
00030 
00034 
00035 struct csShaderVarMapping
00036 {
00038   csStringID name;
00040   csString destination;
00041   csShaderVarMapping (csStringID n, const char* d)
00042     : name(n), destination(d) {}
00043 };
00044 
00045 
00050 struct iShaderDestinationResolver : public virtual iBase
00051 {
00052   SCF_INTERFACE(iShaderDestinationResolver, 0,0,1);
00057   virtual int ResolveTU (const char* binding) = 0;
00058 
00059   virtual csVertexAttrib ResolveBufferDestination (const char* binding) = 0;
00060 };
00061 
00066 struct iShaderProgram : public virtual iBase
00067 {
00068   SCF_INTERFACE(iShaderProgram, 2, 1, 0);
00070   virtual void Activate() = 0;
00071 
00073   virtual void Deactivate() = 0;
00074 
00076   virtual void SetupState (const csRenderMesh* mesh, 
00077                            csRenderMeshModes& modes,
00078                            const iShaderVarStack* stacks) = 0;
00079 
00081   virtual void ResetState () = 0;
00082 
00084   virtual bool Load (iShaderDestinationResolver* resolve, 
00085     iDocumentNode* node) = 0;
00086 
00088   virtual bool Load (iShaderDestinationResolver* resolve, const char* program, 
00089     csArray<csShaderVarMapping>& mappings) = 0;
00090 
00092   virtual bool Compile () = 0;
00093 };
00094 
00099 struct iShaderProgramPlugin : public virtual iBase
00100 {
00101   SCF_INTERFACE(iShaderProgramPlugin,2,0,0);
00102   virtual csPtr<iShaderProgram> CreateProgram(const char* type) = 0;
00103   virtual bool SupportType(const char* type) = 0;
00104 };
00105 
00108 #endif
00109 

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