Graphics Programming I - Rasterization Part II

A shape composed of four vertices and six indices, defining two triangles.

A method of creating a quad using a series of connected triangles, where each triangle shares an edge with the next.

The process of converting geometric data, such as vertices and indices, into pixels on the screen.

The smallest unit of visual information on a digital display, represented by a single color value.

A point in 3D space defined by its x, y, and z coordinates.

A list of vertex indices used to specify the order in which vertices are connected to form triangles.

The process of determining whether a point is inside or outside a triangle.

A set of vertices and indices that define a 3D model, defining its shape and geometry.

A geometric figure formed by connecting three points with line segments, often used for filling a region with color.

A triangle with zero surface area, essentially collapsing into a single line segment. It is used to connect different sections of a triangle strip without rendering any visible area.

The order in which the vertices of a triangle are listed defines the direction in which it faces. Clockwise winding means that if you move along the vertices, you'll trace the triangle in a clockwise direction.

An array of numbers representing the coordinates of vertices used in a triangle strip. By incrementing the index, we cycle between the different triangles.

A special triangle used to close the gap between two triangle strips. Instead of defining a new triangle, adding the last vertex of the first strip and the first vertex of the second strip creates a degenerate triangle, filling the needed gap without changing the result.

Loads an image and creates a Texture object. It accesses the pixel array of the SDL_Surface, similar to the back buffer.

Samples a specific pixel from the Texture's pixel array using UV coordinates.

Converts UV coordinates from the [0, 1] range to the [0, width/height] range for accessing pixels in the Texture.

The process of determining the color value of a pixel inside a triangle by interpolating the UV coordinates of the triangle's vertices.

A value representing the distance from the viewer to a point in 3D space.

Interpolating depth values across a triangle to determine the depth of each pixel.

A technique that uses depth values to determine which pixels are visible and should be drawn. It is based on the principle that pixels closer to the viewer should obscure pixels further away.

The process of finding the color of a pixel based on its depth value and the depth buffer. It is used in rendering to determine which pixels should be drawn and which should be hidden.

A technique for rendering triangles where each triangle is defined by an independent set of vertices.

Determines how a series of vertices is interpreted to form geometric primitives (triangles).

A specialized buffer that stores indices referencing vertices in the vertex buffer, defining the order in which they are used to create triangles.

The process of transforming vertex attributes based on factors like position, camera perspective, and lighting.

A space defined by a unit square, typically with coordinates ranging from 0 to 1, used to map textures onto objects.

A file format that stores images, commonly used in computer graphics and game development.

The weights applied to each vertex's depth value when calculating the interpolated depth.

The depth value of a vertex (represented by the subscript 'z').

The process of dividing each attribute value, including depth, by the corresponding vertex depth.

The final step in depth interpolation, where the interpolated depth is multiplied by the original vertex depth.

The original vertex depth value used for correcting the interpolated depth.

Using depth interpolation, this formula calculates the interpolated depth value for a pixel.

The depth value assigned to a pixel during rasterization, calculated using depth interpolation.

The depth values of the vertices of a triangle, used in depth interpolation.

Normalized screen space coordinates (normalized to the range [0, 1]), used in depth interpolation.

A common way to calculate interpolated depth, using a weighted average of vertex depths based on the screen space coordinates.

An older method of depth interpolation that can produce incorrect results, especially when vertices have significantly different depth values.

The correct value for depth interpolation, as opposed to the old method.