GPGPU Programming for Games and Science

138 GPGPU Programming for Games and Science

stores integer indices (16-bit or 32-bit) into the vertex buffer interpreted as

an array of structures. When the corresponding D3D11 draw call is made, the

vertices are processed by calls to

VSMain.Whenanentireprimitiveisready,

say, the three vertices of a triangle have been processed by the vertex shader

calls, the rasterizer identifies the pixels owned by the triangle and calls

PSMain

for each owned pixel.

In the texturing example, the model-space texture coordinates are passed

through by the vertex shader. The rasterizer then interpolates these coordi-

nates and passes them to the pixel shader so that the 2D texture can be sam-

pled to obtain a color. The

baseTexture object is a read-only texture that the

progr ...