flightgear/utils/fgpanel/FGDummyTextureLoader.cxx
2022-10-20 20:29:11 +08:00

42 lines
1.5 KiB
C++

//
// Written by David Megginson, started January 2000.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
#include "FGDummyTextureLoader.hxx"
GLuint
FGDummyTextureLoader::loadTexture (const string& filename) {
GLuint texture;
glGenTextures (1, &texture);
glBindTexture (GL_TEXTURE_2D, texture);
GLubyte image[ 2 * 2 * 3 ];
/* Red and white chequerboard */
image [ 0] = 255; image [ 1] = 0; image [ 2] = 0;
image [ 3] = 255; image [ 4] = 255; image [ 5] = 255;
image [ 6] = 255; image [ 7] = 255; image [ 8] = 255;
image [ 9] = 255; image [10] = 0; image [11] = 0;
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0,
GL_RGB, GL_UNSIGNED_BYTE, (GLvoid*) image);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
return texture;
}