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GLUtil.h
Package: MMOPRG_server_dev.rar [view]
Upload User: ghyvgy
Upload Date: 2009-05-26
Package Size: 547k
Code Size: 6k
Category:
Other Games
Development Platform:
Python
- /*
- 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 __GLUtil_h__
- #define __GLUtil_h__
- // Set up the GL_NV_fence extension
- #ifndef GL_NV_fence
- #define GL_NV_fence
- #define GL_ALL_COMPLETED_NV 0x84F2
- #define GL_FENCE_STATUS_NV 0x84F3
- #define GL_FENCE_CONDITION_NV 0x84F4
- typedef void (APIENTRY * PFNGLDELETEFENCESNVPROC) (GLsizei n, const GLuint *fences);
- typedef void (APIENTRY * PFNGLGENFENCESNVPROC) (GLsizei n, GLuint *fences);
- typedef GLboolean (APIENTRY * PFNGLISFENCENVPROC) (GLuint fence);
- typedef GLboolean (APIENTRY * PFNGLTESTFENCENVPROC) (GLuint fence);
- typedef void (APIENTRY * PFNGLGETFENCEIVNVPROC) (GLuint fence, GLenum pname, GLint *params);
- typedef void (APIENTRY * PFNGLFINISHFENCENVPROC) (GLuint fence);
- typedef void (APIENTRY * PFNGLSETFENCENVPROC) (GLuint fence, GLenum condition);
- #endif
- #include "glh_genext.h"
- extern int glh_init_extension(const char* extension);
- #include "Texture.h"
- #include "PBuffer.h"
- // This must be defined before GL_NV_vertex_array_range
- class CVertexArray;
- class CVertex
- {
- // Attributes
- public:
- static CVertexArray Array;
- CVector m_vPosition; // The position of the vertex
- CVector m_vNormal; // The normal of the vertex (used for smooth shading)
- float m_fTexCoord[4]; // The texture coordinates of the vertex
- // Operations
- public:
- CVertex() {}
- CVertex(const CVertex &v) { *this = v; }
- void operator=(const CVertex &v)
- {
- m_vPosition = v.m_vPosition;
- m_vNormal = v.m_vNormal;
- m_fTexCoord[0] = v.m_fTexCoord[0];
- m_fTexCoord[1] = v.m_fTexCoord[1];
- m_fTexCoord[2] = v.m_fTexCoord[2];
- m_fTexCoord[3] = v.m_fTexCoord[3];
- }
- void Init(CVector &v)
- {
- m_vPosition = v;
- m_vNormal = v;
- m_fTexCoord[0] = m_fTexCoord[1] = 0;
- }
- };
- #define VERTEX_ARRAY_SIZE 65535 // Would use 65536, but unsigned short only goes up to 65535
- class CVertexArray : public CStackedArray<CVertex, unsigned short>
- {
- public:
- // Constructor/destructor methods
- CVertexArray() : CStackedArray<CVertex, unsigned short>(VERTEX_ARRAY_SIZE) {}
- void UpdateElement(unsigned short nElement) { SetFlags(nElement, Dirty); }
- };
- class CGLUtil
- {
- // Attributes
- protected:
- // Standard OpenGL members
- HDC m_hDC;
- HGLRC m_hGLRC;
- // Members to indicate whether certain OpenGL extensions are supported
- bool m_bVertexArrayRanges;
- bool m_bCompiledVertexArrays;
- bool m_bPBuffers;
- bool m_bRegisterCombiners;
- int m_nMaxTextureUnits;
- // Members for GL_NV_vertex_array_range and GL_NV_fence extensions
- CVertex *m_pArray;
- GLuint m_nFence;
- // Members for the WGL_ARB_pbuffer extension
- CPBuffer m_PBuffer;
- public:
- static CGLUtil *m_pMain;
- // Operations
- public:
- CGLUtil();
- ~CGLUtil();
- void Init();
- void Cleanup();
- void InitRenderContext(HDC hDC=NULL, HGLRC hGLRC=NULL);
- HDC GetHDC() { return m_hDC; }
- HGLRC GetHGLRC() { return m_hGLRC; }
- int GetVertexArraySize() { return VERTEX_ARRAY_SIZE * sizeof(CVertex); }
- bool HasVertexArrayRanges() { return m_bVertexArrayRanges; }
- bool HasCompiledVertexArrays() { return m_bCompiledVertexArrays; }
- bool HasPBuffers() { return m_bPBuffers; }
- bool HasRegisterCombiners() { return m_bRegisterCombiners; }
- int GetMaxTextureUnits() { return m_nMaxTextureUnits; }
- void EnableVertexArray()
- {
- glEnableClientState(GL_VERTEX_ARRAY);
- glVertexPointer(3, GL_FLOAT, sizeof(CVertex), &m_pArray->m_vPosition);
- }
- void DisableVertexArray()
- {
- glDisableClientState(GL_VERTEX_ARRAY);
- }
- void EnableNormalArray()
- {
- glEnableClientState(GL_NORMAL_ARRAY);
- glNormalPointer(GL_FLOAT, sizeof(CVertex), &m_pArray->m_vNormal);
- }
- void DisableNormalArray()
- {
- glDisableClientState(GL_NORMAL_ARRAY);
- }
- void EnableTextureCoordArray(int nTextureUnit=GL_TEXTURE0_ARB, int nOffset=0)
- {
- if(m_nMaxTextureUnits > 1)
- glClientActiveTextureARB(nTextureUnit);
- glEnableClientState(GL_TEXTURE_COORD_ARRAY);
- glTexCoordPointer(2, GL_FLOAT, sizeof(CVertex), &m_pArray->m_fTexCoord[nOffset]);
- }
- void DisableTextureCoordArray(int nTextureUnit=GL_TEXTURE0_ARB)
- {
- if(m_nMaxTextureUnits > 1)
- glClientActiveTextureARB(nTextureUnit);
- glDisableClientState(GL_TEXTURE_COORD_ARRAY);
- }
- void BeginVertexArray();
- void EndVertexArray();
- void BeginPBuffer() { m_PBuffer.MakeCurrent(); }
- void EndPBuffer() { wglMakeCurrent(m_hDC, m_hGLRC); }
- void BeginOrtho2D(int nWidth=640, int nHeight=480)
- {
- glDisable(GL_DEPTH_TEST);
- glDisable(GL_LIGHTING);
- glMatrixMode(GL_MODELVIEW);
- glPushMatrix();
- glLoadIdentity();
- glMatrixMode(GL_PROJECTION);
- glPushMatrix();
- glLoadIdentity();
- gluOrtho2D(0, nWidth, 0, nHeight);
- }
- void EndOrtho2D()
- {
- glPopMatrix();
- glMatrixMode(GL_MODELVIEW);
- glPopMatrix();
- glEnable(GL_LIGHTING);
- glEnable(GL_DEPTH_TEST);
- }
- };
- inline CGLUtil *GLUtil() { return CGLUtil::m_pMain; }
- #endif // __GLUtil_h__