Esempi in C++ (Cpp) per RenderWindow::SaveGLStates

Esempio n. 1

void ParticleSystem::PushOpenGLStates(sf::RenderWindow& target) const
{
	// Switch to manual OpenGL handling, save SFML's state
	target.SaveGLStates();
	target.SetActive();

	// Switch blend mode, depending on glow effect	
	if (mGlow)
		glBlendFunc(GL_SRC_ALPHA, GL_ONE);
	else
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	glEnable(GL_BLEND);

	// Store attributes and assign them
	glPushAttrib(GL_DEPTH_BITS | GL_TEXTURE_BIT);
	glDisable(GL_DEPTH_TEST);
	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D, mTexture->id);

	// Initialize projection matrix (2D view)
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	detail::SetupOpenGL2DView(target.GetView());

	// Initialize modelview matrix (will be edited in Particle::Render())
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
}