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65 lines
1.6 KiB
65 lines
1.6 KiB
16 years ago
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/*
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Copyright © 2010 Vladimír Vondruš <mosra@centrum.cz>
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This file is part of Magnum.
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Magnum is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License version 3
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only, as published by the Free Software Foundation.
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Magnum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License version 3 for more details.
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*/
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#include "TGATexture.h"
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#include <iostream>
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#include <fstream>
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using namespace std;
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using namespace Magnum::Math;
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namespace Magnum { namespace Examples {
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TGATexture::TGATexture(const std::string& filename) {
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ifstream image(filename.c_str(), ifstream::binary);
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if(!image.good()) {
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image.close();
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return;
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}
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Header header;
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image.read(reinterpret_cast<char*>(&header), sizeof(Header));
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ColorFormat colorFormat;
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int internalFormat;
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switch(header.bpp) {
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case 24:
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colorFormat = BGR;
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internalFormat = RGB;
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break;
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case 32:
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colorFormat = BGRA;
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internalFormat = RGBA;
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break;
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default:
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cerr << (int) header.bpp << endl;
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return;
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}
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size_t size = header.width*header.height*header.bpp/8;
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GLubyte* buffer = new GLubyte[size];
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image.read(reinterpret_cast<char*>(buffer), size);
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image.close();
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GLsizei dimensions[] = {header.width, header.height};
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setData(0, internalFormat, dimensions, colorFormat, buffer);
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delete[] buffer;
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}
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}}
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