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/*
* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "texture.hpp"
namespace usdx
{
log4cpp::Category& Texture::log =
log4cpp::Category::getInstance("usdx.base.texture");
const GLfloat Texture::default_vertices[] = { 0.0f, 1.0f,
1.0f, 1.0f,
1.0f, 0.0f,
0.0f, 0.0f };
Texture::Texture(boost::filesystem::wpath filename) :
filename(filename), texture(0), size(0, 0), rotation(0)
{
}
Texture::~Texture()
{
}
void Texture::gl_initialize()
{
Image image(filename);
size = image.get_size();
// // Check that the image dimensions are a power of 2
// if ((image.get_surface()->w & (image.get_surface()->w - 1)) != 0 ) {
// LOG4CXX_ERROR(log, "" << filename << " has a width of " << image.get_surface()->w << " that is not a power of 2");
// throw TextureSizeException(size);
// }
// if ((image.get_surface()->h & (image.get_surface()->h - 1)) != 0 ) {
// LOG4CXX_ERROR(log, "" << filename << " has a height of " << image.get_surface()->h << " that is not a power of 2");
// throw TextureSizeException(size);
// }
switch (image.get_surface()->format->BytesPerPixel) {
case 4:
if (image.get_surface()->format->Rmask == 0x000000ff) {
texture_format = GL_RGBA;
}
else {
texture_format = GL_BGRA;
}
break;
case 3:
if (image.get_surface()->format->Rmask == 0x000000ff) {
texture_format = GL_RGB;
}
else {
texture_format = GL_BGR;
}
break;
default:
log << log4cpp::Priority::ERROR << "'" << filename <<
"' is not in true color! Could not handle that!";
throw TextureColorDepthException(image.get_surface()->format->BytesPerPixel);
}
// Have OpenGL generate a texture object handle for us
glGenTextures(1, &texture);
// Bind the texture object
glBindTexture(GL_TEXTURE_2D, texture);
// Set the texture's stretching properties
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// Edit the texture object's image data using the information SDL_Surface gives us
glTexImage2D(GL_TEXTURE_2D,
0,
image.get_surface()->format->BytesPerPixel,
image.get_surface()->w,
image.get_surface()->h,
0,
texture_format,
GL_UNSIGNED_BYTE,
image.get_surface()->pixels);
}
void Texture::gl_cleanup()
{
if (glIsTexture(texture)) {
glDeleteTextures(1, &texture);
}
}
void Texture::enable(void)
{
GlDelayedAllocation::enable();
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, texture);
}
void Texture::disable(void)
{
GlDelayedAllocation::disable();
glDisable(GL_TEXTURE_2D);
}
};
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