What are the different types of line primitives?
There are 3 kinds of line primitives, based on different interpretations of a vertex stream. GL_LINES: Vertices 0 and 1 are considered a line. GL_LINE_STRIP: The adjacent vertices are considered lines. GL_LINE_LOOP: As line strips, except that the first and last vertices are also used as a line.
What are some of the features of path tracing?
In solving the rendering equation, path tracing automatically gets many graphical “features” which are cutting edge research topics of real time graphics, such as soft shadows, global illumination, color bleeding and ambient occlusion.
How many samples per pixel in path tracing?
The images below were path traced using 100,000 samples per pixel, using the sample code provided in this post. Path tracing is a specific type of ray tracing that aims to make photo realistic images by solving something called the rendering equation.
Where does the point size of a primitive come from?
If GL_PROGRAM_POINT_SIZE is enabled, then the point size comes from the output variable float gl_PointSize. If it is disabled, the point size is constant for all points in a primitive, and is set by the glPointSize function. The size defines the number of window pixels that each side of the point’s square takes up.
Which is the primitive to close a line strip in OpenGL?
OpenGL renders a line segment between the first and second vertices, between the second and third, between the third and fourth, and so on. If the application specifies n vertices, OpenGL renders n –1 line segments. GL_LINE_LOOP — Use this primitive to close a line strip.
What are the leading vertices of a primitive?
A primitive type can have multiple leading vertices defined, as long as each one is used for a different primitive. For a triangle strip with adjacency, the leading vertices are 0, 2, 4, 6, and so on. For a line strip with adjacency, the leading vertices are 1, 2, 3, and so on. An adjacent primitive, on the other hand, has no leading vertex.