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nux  3.0.0
IOpenGLVertexDeclaration.h
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00001 /*
00002  * Copyright 2010 Inalogic® Inc.
00003  *
00004  * This program is free software: you can redistribute it and/or modify it
00005  * under the terms of the GNU Lesser General Public License, as
00006  * published by the  Free Software Foundation; either version 2.1 or 3.0
00007  * of the License.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranties of
00011  * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
00012  * PURPOSE.  See the applicable version of the GNU Lesser General Public
00013  * License for more details.
00014  *
00015  * You should have received a copy of both the GNU Lesser General Public
00016  * License along with this program. If not, see <http://www.gnu.org/licenses/>
00017  *
00018  * Authored by: Jay Taoko <jaytaoko@inalogic.com>
00019  *
00020  */
00021 
00022 
00023 #ifndef IOPENGLVERTEXDECLARATION_H
00024 #define IOPENGLVERTEXDECLARATION_H
00025 
00026 namespace nux
00027 {
00028 
00029   class IOpenGLResource;
00030   class IOpenGLVertexDeclaration: public IOpenGLResource
00031   {
00032     NUX_DECLARE_OBJECT_TYPE(IOpenGLVertexDeclaration, IOpenGLResource);
00033 
00034   public:
00035     virtual ~IOpenGLVertexDeclaration();
00036 
00037     VERTEXELEMENT GetUsage(ATTRIB_USAGE_DECL usage);
00038     bool IsUsingMoreThanStreamZero();
00039     int GetStride(int vertex_input_number);
00040 
00041     void SetVertexShaderAttributeLocation(int input_index, int shader_attribute_location);
00042     int GetVertexShaderAttributeLocation(int input_index);
00043 
00044   private:
00045     void SetVertexBuffer(int input_index, ObjectPtr<IOpenGLVertexBuffer> vertex_buffer);
00046     ObjectPtr<IOpenGLVertexBuffer> GetVertexBuffer(int input_index);
00047 
00048     IOpenGLVertexDeclaration(const VERTEXELEMENT *pVertexElements);
00049 
00050     int _stride[8]; 
00051     int _valid_vertex_input[16]; // Vertex Input valid for this vertex declaration
00052 
00053     int shader_attribute_location_array[8];
00054 
00055     std::vector<ObjectPtr<IOpenGLVertexBuffer> > vertex_buffer_array;
00056     std::vector<VERTEXELEMENT> _declarations_array;
00057     
00058     friend class GpuDevice;
00059     friend class CachedMeshBuffer;
00060   };
00061 
00062 }
00063 
00064 #endif // IOPENGLVERTEXDECLARATION_H