void MipMapGenerator::generateMipMapCPU (Pixmap::ptr pixmap,int textureWidth,int textureHeight,bool disposePixmap) {
Gdx::gl->glTexImage2D(GL_TEXTURE_2D, 0, pixmap->getGLInternalFormat(), pixmap->getWidth(), pixmap->getHeight(), 0,
pixmap->getGLFormat(), pixmap->getGLType(), pixmap->getPixels());
if ((Gdx::gl20 == NULL) && textureWidth != textureHeight) {
throw std::runtime_error("texture width and height must be square when using mipmapping.");
}
int width = pixmap->getWidth() / 2;
int height = pixmap->getHeight() / 2;
int level = 1;
while (width > 0 && height > 0) {
Pixmap::ptr tmp(Pixmap::newFromRect(width, height, pixmap->getFormat(), pixmap->getType()));
tmp->drawPixmap(*pixmap, 0, 0, pixmap->getWidth(), pixmap->getHeight(), 0, 0, width, height);
if (level > 1 || disposePixmap) pixmap->dispose();
pixmap.swap(tmp);
Gdx::gl->glTexImage2D(GL_TEXTURE_2D, level, pixmap->getGLInternalFormat(), pixmap->getWidth(), pixmap->getHeight(), 0,
pixmap->getGLFormat(), pixmap->getGLType(), pixmap->getPixels());
width = pixmap->getWidth() / 2;
height = pixmap->getHeight() / 2;
level++;
}
pixmap->dispose();
}
void Texture::uploadImageData (const gdx_cpp::graphics::Pixmap::ptr& pixmap) {
if (enforcePotImages && Gdx::gl20 == NULL
&& (! gdx_cpp::math::utils::isPowerOfTwo(data->getWidth()) || !gdx_cpp::math::utils::isPowerOfTwo(data->getHeight())))
{
throw std::runtime_error("Texture.cpp: texture width and height must be powers of two");
}
bool disposePixmap = false;
Pixmap::ptr tmp = pixmap;
if (*data->getFormat() != pixmap->getFormat()) {
tmp = Pixmap::newFromPixmap(*pixmap);
tmp->drawPixmap(*pixmap, 0, 0, 0, 0, pixmap->getWidth(), pixmap->getHeight());
disposePixmap = true;
}
Gdx::gl->glBindTexture(GL_TEXTURE_2D, glHandle);
Gdx::gl->glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
if (data->useMipMaps()) {
glutils::MipMapGenerator::generateMipMap(tmp, tmp->getWidth(), tmp->getHeight(), disposePixmap);
} else {
Gdx::gl->glTexImage2D(GL_TEXTURE_2D, 0, tmp->getGLInternalFormat(), tmp->getWidth(), tmp->getHeight(), 0,
tmp->getGLFormat(), tmp->getGLType(), tmp->getPixels());
if (disposePixmap) tmp->dispose();
}
}
void Texture::uploadImageData (const gdx_cpp::graphics::Pixmap::ptr pixmap) {
if (enforcePotImages && Gdx::gl20 == NULL
&& (! gdx_cpp::math::utils::isPowerOfTwo(data->getWidth()) || !gdx_cpp::math::utils::isPowerOfTwo(data->getHeight())))
{
Gdx::app->error("Texture.cpp", "texture width and height must be powers of two");
}
bool disposePixmap = false;
Pixmap::ptr tmp = pixmap;
if (*data->getFormat() != pixmap->getFormat()) {
tmp = Pixmap::ptr(new Pixmap(pixmap->getWidth(), pixmap->getHeight(), *data->getFormat()));
Pixmap::Blending blend = Pixmap::getBlending();
Pixmap::setBlending(Pixmap::None);
tmp->drawPixmap(*pixmap, 0, 0, 0, 0, pixmap->getWidth(), pixmap->getHeight());
Pixmap::setBlending(blend);
disposePixmap = true;
}
Gdx::gl->glBindTexture(GL10::GL_TEXTURE_2D, glHandle);
if (data->useMipMaps()) {
glutils::MipMapGenerator::generateMipMap(*tmp, tmp->getWidth(), tmp->getHeight(), disposePixmap);
} else {
Gdx::gl->glTexImage2D(GL10::GL_TEXTURE_2D, 0, tmp->getGLInternalFormat(), tmp->getWidth(), tmp->getHeight(), 0,
tmp->getGLFormat(), tmp->getGLType(), tmp->getPixels());
if (disposePixmap) tmp->dispose();
}
}
void create() {
Texture::ptr texture = Texture::ptr(new Texture(1024,1024, Pixmap::Format::RGBA8888, Pixmap::Gdx2d));
Pixmap::ptr pixmap = Pixmap::newFromRect(840, 480, Pixmap::Format::RGBA8888, Pixmap::Gdx2d);
texture->setFilter(Texture::TextureFilter::Nearest, Texture::TextureFilter::Linear);
texture->setWrap(Texture::TextureWrap::ClampToEdge, Texture::TextureWrap::ClampToEdge);
pixmap->setColor(1.0f, 0.0f, 0.0f, 1.0f); // Red
pixmap->drawLine(0, 0, 100, 100);
pixmap->setColor(0.0f, 0.0f, 1.0f, 1.0f); // Blue
pixmap->drawLine(100, 100, 200, 0);
pixmap->setColor(0.0f, 1.0f, 0.0f, 1.0f); // Green
pixmap->drawLine(100, 0, 100, 100);
pixmap->setColor(1.0f, 1.0f, 1.0f, 1.0f); // White
pixmap->drawCircle(400, 300, 100);
texture->draw(*pixmap, 0, 0);
region = new TextureRegion(texture, 0, 0, 800, 480);
batch = new SpriteBatch();
Pixmap::ptr px = Pixmap::newFromRect(512, 1024, Pixmap::Format::RGBA8888, Pixmap::Gdx2d);
for (int y = 0; y < pixmap->getHeight(); y++) { // 1024
for (int x = 0; x < pixmap->getWidth(); x++) { // 512
pixmap->getPixel(x, y);
}
}
px->dispose();
}