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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>Nebula: Graphics</title>
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<div class="textblock"><h1><a class="anchor" id="NebulaGraphicsSystem"></a>
The Graphics High-level Interface</h1>
<p>The <a class="el" href="namespace_graphics.html" title="Implements the shader server used by Vulkan.">Graphics</a> <a class="el" href="namespace_interface.html">Interface</a> is supposed to provide a high-level interaction with the rendering systems.</p>
<p>All graphics related entities are the same type, but they can be registered in different <b><a class="el" href="class_graphics_1_1_graphics_context.html">Graphics::GraphicsContext</a></b> classes. A <a class="el" href="class_graphics_1_1_graphics_context.html">Graphics::GraphicsContext</a> implements some rendering component, for example we have the <a class="el" href="class_visibility_1_1_observer_context.html">Visibility::ObserverContext</a>, which handles visibility resolution, or the <a class="el" href="class_models_1_1_model_context.html">Models::ModelContext</a>, which sets an <a class="el" href="struct_graphics_1_1_graphics_entity_id.html" title="The graphics entity is only an Id, to which we can attach GraphicsContexts.">Graphics::GraphicsEntityId</a> up with a model. As such, the <a class="el" href="namespace_graphics.html" title="Implements the shader server used by Vulkan.">Graphics</a> namespace is quite small, however there are many other namespaces which are entirely Graphics-level APIs, such as <a class="el" href="class_lighting_1_1_light_context.html">Lighting::LightContext</a> and <a class="el" href="class_particles_1_1_particle_context.html">Particles::ParticleContext</a>.</p>
<p>A <a class="el" href="class_graphics_1_1_view.html" title="A view describes a camera which can observe a Stage.">Graphics::View</a> corresponds to a camera, <a class="el" href="class_frame_1_1_frame_script.html" title="A FrameScript describes render operations being done to produce a single frame.">Frame::FrameScript</a>, and <a class="el" href="struct_core_graphics_1_1_window_id.html">CoreGraphics::WindowId</a> tuple, combining these three to produce a frame fit for a window. Use View when you need to render the scene again, from another angle, or for example in VR, where you need to render through another eye. Use with caution however, since it will cause the scene to be rendered once per view. </p>
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