+++ /dev/null
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2009 Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
-#include <cstring>
-#include <msp/strings/lexicalcast.h>
-#include "except.h"
-#include "vertexformat.h"
-
-using namespace std;
-
-namespace Msp {
-namespace GL {
-
-VertexFormat::VertexFormat():
- data(0)
-{ }
-
-VertexFormat::VertexFormat(VertexComponent c):
- data(new unsigned char[8])
-{
- data[0]=1;
- data[1]=c;
-}
-
-VertexFormat::VertexFormat(const VertexFormat &f):
- data(0)
-{
- if(f.data)
- {
- data=new unsigned char[f.data[0]/8+8];
- memcpy(data, f.data, f.data[0]+1);
- }
-}
-
-VertexFormat &VertexFormat::operator=(const VertexFormat &f)
-{
- delete[] data;
- if(f.data)
- {
- data=new unsigned char[f.data[0]/8+8];
- memcpy(data, f.data, f.data[0]+1);
- }
- else
- data=0;
-
- return *this;
-}
-
-VertexFormat::~VertexFormat()
-{
- delete[] data;
-}
-
-VertexFormat operator,(const VertexFormat &f, VertexComponent c)
-{
- VertexFormat r=f;
- if(r.data)
- {
- const unsigned char n=++r.data[0];
- if((n&7)==7)
- {
- unsigned char *newdt=new unsigned char[n+9];
- memcpy(newdt, r.data, n);
- delete r.data;
- r.data=newdt;
- }
- r.data[n]=c;
- }
- else
- {
- r.data=new unsigned char[8];
- r.data[0]=1;
- r.data[1]=c;
- }
-
- return r;
-}
-
-VertexFormat operator,(const VertexFormat &f, unsigned i)
-{
- if(!f.data)
- throw InvalidState("VertexFormat has no components");
- VertexFormat r=f;
- unsigned char *c=r.data+r.data[0];
- if(*c<ATTRIB1)
- throw InvalidState("Last component is not a generic attribute");
- // VertexArray uses an unsigned to store flags for enabled arrays
- if(i>=28)
- throw InvalidParameterValue("Generic attribute index out of range");
- *c+=i*4;
-
- return r;
-}
-
-uint get_stride(const VertexFormat &f)
-{
- uint stride=0;
- for(const unsigned char *i=f.begin(); i!=f.end(); ++i)
- stride+=(*i&3)+1;
- return stride;
-}
-
-istream &operator>>(istream &in, VertexFormat &f)
-{
- string str;
- in>>str;
-
- unsigned start=0;
-
- while(1)
- {
- string::size_type underscore=str.find('_', start);
- bool fail=false;
- if(!str.compare(start, underscore-start, "VERTEX2"))
- f=(f,VERTEX2);
- else if(!str.compare(start, underscore-start, "VERTEX3"))
- f=(f,VERTEX3);
- else if(!str.compare(start, underscore-start, "VERTEX4"))
- f=(f,VERTEX4);
- else if(!str.compare(start, underscore-start, "NORMAL3"))
- f=(f,NORMAL3);
- else if(!str.compare(start, underscore-start, "TEXCOORD1"))
- f=(f,TEXCOORD1);
- else if(!str.compare(start, underscore-start, "TEXCOORD2"))
- f=(f,TEXCOORD2);
- else if(!str.compare(start, underscore-start, "TEXCOORD3"))
- f=(f,TEXCOORD3);
- else if(!str.compare(start, underscore-start, "TEXCOORD4"))
- f=(f,TEXCOORD4);
- else if(!str.compare(start, underscore-start, "COLOR4UB"))
- f=(f,COLOR4_UBYTE);
- else if(!str.compare(start, underscore-start, "COLOR3F"))
- f=(f,COLOR3_FLOAT);
- else if(!str.compare(start, underscore-start, "COLOR4F"))
- f=(f,COLOR4_FLOAT);
- else if(underscore>=start+8 && !str.compare(start, 6, "ATTRIB"))
- {
- try
- {
- char n=str[start+6];
- unsigned i=lexical_cast<unsigned>(str.substr(start+7, underscore-start-7));
- if(n=='1')
- f=(f,ATTRIB1,i);
- else if(n=='2')
- f=(f,ATTRIB2,i);
- else if(n=='3')
- f=(f,ATTRIB3,i);
- else if(n=='4')
- f=(f,ATTRIB4,i);
- else
- fail=true;
- }
- catch(const LexicalError &)
- {
- fail=true;
- }
- }
- else
- fail=true;
-
- if(fail)
- {
- in.setstate(ios_base::failbit);
- break;
- }
-
- if(underscore==string::npos)
- break;
- start=underscore+1;
- }
-
- return in;
-}
-
-} // namespace GL
-} // namespace Msp