void Texture::setFilter(GLenum target) {
const TXI::Features &features = getTXI().getFeatures();
if (features.filter) {
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
} else {
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
}
void Texture::doRebuild() {
if (!_image)
// No image
return;
// Generate the texture ID
if (_textureID == 0)
glGenTextures(1, &_textureID);
// Bind the texture
glBindTexture(GL_TEXTURE_2D, _textureID);
// Texture wrapping
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
// Filter?
const TXI::Features &features = getTXI().getFeatures();
if (features.filter) {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
} else {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
if (_image->getMipMapCount() == 1) {
// Texture doesn't specify any mip maps, generate our own
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 9);
} else {
// Texture does specify mip maps, use these
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_FALSE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, _image->getMipMapCount() - 1);
}
// Texture image data
if (_image->isCompressed()) {
// Compressed texture data
for (uint32 i = 0; i < _image->getMipMapCount(); i++) {
const ImageDecoder::MipMap &mipMap = _image->getMipMap(i);
glCompressedTexImage2D(GL_TEXTURE_2D, i, _image->getFormatRaw(),
mipMap.width, mipMap.height, 0,
mipMap.size, mipMap.data);
}
} else {
// Uncompressed texture data
for (uint32 i = 0; i < _image->getMipMapCount(); i++) {
const ImageDecoder::MipMap &mipMap = _image->getMipMap(i);
glTexImage2D(GL_TEXTURE_2D, i, _image->getFormatRaw(),
mipMap.width, mipMap.height, 0, _image->getFormat(),
_image->getDataType(), mipMap.data);
}
}
}