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Updates for correct complilation with glew found during Presto integration, and

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change to vertexBuffer ot avoid dynamic cast issues in Presto.
This commit is contained in:
gelder 2012-06-20 17:11:17 -07:00
parent b6b2a0aadd
commit 0e27dc6c20
1 changed files with 79 additions and 0 deletions
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79
opensubdiv/osd/vertexBuffer.cpp Normal file
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#include "../version.h"
#include <GL/glew.h>
#include "vertexBuffer.h"
#include <GL/gl.h>
#include <GL/glext.h>
#include <iostream>
namespace OpenSubdiv {
namespace OPENSUBDIV_VERSION {
OsdVertexBuffer::~OsdVertexBuffer()
{
}
OsdGpuVertexBuffer::OsdGpuVertexBuffer(int numElements, int numVertices) :
OsdVertexBuffer(numElements), _vbo(0)
{
int size = numElements * numVertices * sizeof(float);
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, size, 0, GL_STREAM_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
void
OsdGpuVertexBuffer::UpdateData(const float *src, int numVertices)
{
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
float * pointer = (float*)glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
memcpy(pointer, src, _numElements * numVertices * sizeof(float));
glUnmapBuffer(GL_ARRAY_BUFFER);
glBindBuffer(GL_ARRAY_BUFFER, 0);
}
OsdGpuVertexBuffer::~OsdGpuVertexBuffer()
{
glDeleteBuffers(1, &_vbo);
}
OsdCpuVertexBuffer::OsdCpuVertexBuffer(int numElements, int numVertices) :
OsdVertexBuffer(numElements), _cpuVbo(NULL), _vboSize(0), _vbo(0)
{
_vboSize = numElements * numVertices;
_cpuVbo = new float[numElements * numVertices];
}
OsdCpuVertexBuffer::~OsdCpuVertexBuffer()
{
delete [] _cpuVbo;
if (_vbo)
glDeleteBuffers(1, &_vbo);
}
void
OsdCpuVertexBuffer::UpdateData(const float *src, int numVertices)
{
memcpy(_cpuVbo, src, _numElements * numVertices * sizeof(float));
}
GLuint
OsdCpuVertexBuffer::GetGpuBuffer()
{
if (!_vbo)
glGenBuffers(1, &_vbo);
glBindBuffer(GL_ARRAY_BUFFER, _vbo);
glBufferData(GL_ARRAY_BUFFER, _vboSize * sizeof(float), _cpuVbo, GL_STREAM_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
return _vbo;
}
} // end namespace OPENSUBDIV_VERSION
} // end namespace OpenSubdiv