Texture.h
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上传日期:2009-05-26
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- /*
- s_p_oneil@hotmail.com
- Copyright (c) 2000, Sean O'Neil
- 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 this project 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.
- */
- #ifndef __Texture_h__
- #define __Texture_h__
- #include "PixelBuffer.h"
- /*******************************************************************************
- * Class: CTexture
- ********************************************************************************
- * This class encapsulates OpenGL texture objects. You initialize it with a
- * CPixelBuffer instance and a flag indicating whether you want mipmaps to be
- * generated.
- *******************************************************************************/
- class CTexture
- {
- protected:
- int m_nType; // GL_TEXTURE_1D or GL_TEXTURE_2D
- unsigned int m_nID; // OpenGL-generated texture ID
- static CTexture m_tCursor; // Shared cursor texture
- static CTexture m_tNoise; // Shared 2D noise texture
- static CTexture m_tStar; // Shared star (or glow) texture
- static CTexture m_tAtmosphereShell; // Shared atmosphere shell texture
- static CTexture m_tCloudCell; // Shared cloud cell texture
- public:
- CTexture() { m_nID = -1; }
- CTexture(CPixelBuffer *pBuffer, bool bMipmap=true)
- {
- m_nID = -1;
- Init(pBuffer, bMipmap);
- }
- ~CTexture() { Cleanup(); }
- void Cleanup()
- {
- if(m_nID != -1)
- {
- glDeleteTextures(1, &m_nID);
- m_nID = -1;
- }
- }
- static void InitStaticMembers(int nSeed, int nSize);
- static CTexture &GetCursor() { return m_tCursor; }
- static CTexture &GetNoise() { return m_tNoise; }
- static CTexture &GetStar() { return m_tStar; }
- static CTexture &GetAtmosphereShell() { return m_tAtmosphereShell; }
- static CTexture &GetCloudCell() { return m_tCloudCell; }
- static void Enable(int nType) { glEnable(nType); }
- static void Disable(int nType) { glDisable(nType); }
-
- DWORD GetID() { return m_nID; }
- int GetType() { return m_nType; }
- void Bind() { if(m_nID != -1) glBindTexture(m_nType, m_nID); }
- void Enable() { if(m_nID != -1) { Bind(); glEnable(m_nType); } }
- void Disable() { if(m_nID != -1) glDisable(m_nType); }
- void Init(CPixelBuffer *pBuffer, bool bClamp=true, bool bMipmap=true);
- void Update(CPixelBuffer *pBuffer, int nLevel=0);
- // Use when rendering to texture (either in the back buffer or a CPBuffer)
- void InitCopy(int x, int y, int nWidth, int nHeight, bool bClamp=true);
- void UpdateCopy(int x, int y, int nWidth, int nHeight, int nOffx=0, int nOffy=0);
- };
- #endif // __Texture_h__