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[Hgengine-cvs] SF.net SVN: hgengine:[79] Mercury2/src
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From: <axl...@us...> - 2008-12-23 19:23:26
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Revision: 79
http://hgengine.svn.sourceforge.net/hgengine/?rev=79&view=rev
Author: axlecrusher
Date: 2008-12-23 19:23:21 +0000 (Tue, 23 Dec 2008)
Log Message:
-----------
add support for vbo
Added Paths:
-----------
Mercury2/src/MercuryVBO.cpp
Mercury2/src/MercuryVBO.h
Added: Mercury2/src/MercuryVBO.cpp
===================================================================
--- Mercury2/src/MercuryVBO.cpp (rev 0)
+++ Mercury2/src/MercuryVBO.cpp 2008-12-23 19:23:21 UTC (rev 79)
@@ -0,0 +1,123 @@
+#include <MercuryVBO.h>
+
+#define GL_GLEXT_PROTOTYPES
+
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+#include <Texture.h>
+
+#define BUFFER_OFFSET(i) ((char*)NULL + (i))
+
+MercuryVBO::MercuryVBO()
+ :MercuryAsset(), m_vertexData(NULL), m_vMem(NULL), m_vertexIndexList(NULL), m_iMem(NULL), m_initiated(false)
+{
+ m_bufferIDs[0] = m_bufferIDs[1] = 0;
+}
+
+MercuryVBO::~MercuryVBO()
+{
+ SAFE_FREE(m_vMem);
+ SAFE_FREE(m_iMem);
+
+ if (m_bufferIDs[0]) glDeleteBuffersARB(2, m_bufferIDs);
+ m_bufferIDs[0] = m_bufferIDs[1] = 0;
+}
+
+void MercuryVBO::Render(MercuryNode* node)
+{
+// unsigned short numTextures = Texture::NumberActiveTextures();
+ unsigned short stride = sizeof(float)*5;
+
+ if ( m_initiated )
+ {
+ if ( this != m_lastVBOrendered)
+ {
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, m_bufferIDs[0]);
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, m_bufferIDs[1]);
+ }
+ }
+ else
+ InitVBO();
+
+ if ( this != m_lastVBOrendered)
+ glVertexPointer(3, GL_FLOAT, stride, 0);
+
+ //XXX This seems to apply texture coordinates to all active texture units
+ glTexCoordPointer(2, GL_FLOAT, stride, BUFFER_OFFSET(sizeof(float)*3));
+
+ glDrawRangeElements(GL_QUADS, 0, m_bufferLength[1], m_bufferLength[1], GL_UNSIGNED_SHORT, NULL);
+
+ m_lastVBOrendered = this;
+}
+
+void MercuryVBO::InitVBO()
+{
+ glGenBuffersARB(2, m_bufferIDs);
+
+ //vertex VBO
+ glBindBufferARB(GL_ARRAY_BUFFER_ARB, m_bufferIDs[0]);
+ glBufferDataARB(GL_ARRAY_BUFFER_ARB, m_bufferLength[0], m_vertexData, GL_STATIC_DRAW_ARB);
+
+ //indices VBO
+ glBindBufferARB(GL_ELEMENT_ARRAY_BUFFER_ARB, m_bufferIDs[1]);
+ glBufferDataARB(GL_ELEMENT_ARRAY_BUFFER_ARB, sizeof(uint16_t)*m_bufferLength[1], m_vertexIndexList, GL_STATIC_DRAW_ARB);
+
+ SAFE_FREE(m_vMem);
+ SAFE_FREE(m_iMem);
+
+ glEnableClientState(GL_VERTEX_ARRAY);
+
+ m_initiated = true;
+}
+
+void MercuryVBO::AllocateVertexSpace(unsigned int count, unsigned int elementSize)
+{
+ SAFE_FREE(m_vMem);
+ void* mem = NULL;
+ m_vertexData = (char*)mmemalign(32, elementSize*count, mem);
+ m_vMem = (char*)mem;
+ m_bufferLength[0] = elementSize*count;
+}
+
+void MercuryVBO::AllocateIndexSpace(unsigned int count)
+{
+ SAFE_FREE(m_iMem);
+ void* mem = NULL;
+ m_vertexIndexList = (uint16_t*)mmemalign(32, sizeof(uint16_t)*count, mem);
+ m_iMem = (uint16_t*)mem;
+ m_bufferLength[1] = count;
+}
+
+void* MercuryVBO::m_lastVBOrendered = NULL;
+/****************************************************************************
+ * Copyright (C) 2008 by Joshua Allen *
+ * *
+ * *
+ * 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 the Mercury Engine 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. *
+ ***************************************************************************/
Added: Mercury2/src/MercuryVBO.h
===================================================================
--- Mercury2/src/MercuryVBO.h (rev 0)
+++ Mercury2/src/MercuryVBO.h 2008-12-23 19:23:21 UTC (rev 79)
@@ -0,0 +1,60 @@
+#include <MercuryAsset.h>
+
+class MercuryVBO : public MercuryAsset
+{
+ public:
+ MercuryVBO();
+ virtual ~MercuryVBO();
+
+ virtual void Render(MercuryNode* node);
+
+ void AllocateVertexSpace(unsigned int count, unsigned int elementSize);
+ void AllocateIndexSpace(unsigned int count);
+
+ inline char* Buffer() { return m_vertexData; }
+ inline uint16_t* IndexBuffer() { return m_vertexIndexList; }
+ private:
+ virtual void InitVBO();
+
+ unsigned int m_bufferIDs[2];
+ unsigned int m_bufferLength[2];
+
+ char *m_vertexData, *m_vMem;
+ uint16_t *m_vertexIndexList, *m_iMem;
+
+ bool m_initiated;
+
+ static void* m_lastVBOrendered;
+};
+
+/****************************************************************************
+ * Copyright (C) 2008 by Joshua Allen *
+ * *
+ * *
+ * 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 the Mercury Engine 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. *
+ ***************************************************************************/
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