librw/ogl.cpp

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#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cassert>
#include <iostream>
#include <fstream>
#include "rwbase.h"
#include "rwplugin.h"
#include "rw.h"
#include "rwogl.h"
using namespace std;
namespace Rw {
void*
DestroyNativeDataOGL(void *object, int32, int32)
{
Geometry *geometry = (Geometry*)object;
assert(geometry->instData->platform == PLATFORM_OGL);
OGLInstanceDataHeader *header =
(OGLInstanceDataHeader*)geometry->instData;
delete[] header->attribs;
delete[] header->data;
delete header;
return object;
}
void
ReadNativeDataOGL(istream &stream, int32, void *object, int32, int32)
{
Geometry *geometry = (Geometry*)object;
OGLInstanceDataHeader *header = new OGLInstanceDataHeader;
geometry->instData = header;
header->platform = PLATFORM_OGL;
header->numAttribs = readUInt32(stream);
header->attribs = new OGLAttrib[header->numAttribs];
stream.read((char*)header->attribs,
header->numAttribs*sizeof(OGLAttrib));
// Any better way to find out the size? (header length can be wrong)
header->dataSize = header->attribs[0].stride*geometry->numVertices;
header->data = new uint8[header->dataSize];
stream.read((char*)header->data, header->dataSize);
}
void
WriteNativeDataOGL(ostream &stream, int32 len, void *object, int32, int32)
{
Geometry *geometry = (Geometry*)object;
assert(geometry->instData->platform == PLATFORM_OGL);
OGLInstanceDataHeader *header =
(OGLInstanceDataHeader*)geometry->instData;
writeUInt32(header->numAttribs, stream);
stream.write((char*)header->attribs,
header->numAttribs*sizeof(OGLAttrib));
stream.write((char*)header->data, header->dataSize);
}
int32
GetSizeNativeDataOGL(void *object, int32, int32)
{
Geometry *geometry = (Geometry*)object;
assert(geometry->instData->platform == PLATFORM_OGL);
OGLInstanceDataHeader *header =
(OGLInstanceDataHeader*)geometry->instData;
return 4 + header->numAttribs*sizeof(OGLAttrib) + header->dataSize;
}
}