Model-View-Projection (Mvp) Transformation; 2D Transformation (Cc→Ndc Coordinate Transformation) - Fujitsu MB86R02 Jade-D Hardware Manual

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MB86R02 'Jade-D' Hardware Manual V1.64

Model-view-projection (MVP) transformation

The geometry engine transforms the vertex of the "OC" coordinate system specified by the G_Vertex

packet to the "CC" coordinate system according to the coordinate transformation matrix (OC → CC

Matrix) specified by the G_LoadMatrix packet. The "OC → CC Matrix" is a "4 × 4" matrix consisting of

a ModelView matrix and a Projection matrix.

If "Zoc" is not contained in the input parameter of the G_Vertex packet (Z-bit of GMDR0 is off), (OC →

CC) coordinate transformation is processed as "Zoc = 0".

When GMDR0[0] is 0 (orthogonal projection transformation), OC → CC coordinate transformation is

processed as "Wcc = 1.0". (Work only for C=0,Z=0 and ST=0 (XY only vertex) mode)

OC: Object Coordinates

CC: Clip Coordinates

Ma0 to Md3: OC → CC Matrix

Xoc to Zoc: X, Y and Z of OC coordinate system

Xcc to Woc: X, Y, Z and W of CC coordinate system

3D-2D transformation (CC→NDC coordinate transformation)

The geometry engine divides "XYZ" of the "CC" coordinate system by "Wcc" (Perspective Division).

NDC: Normalized Device Coordinates

Xndc to Zndc: X, Y and Z of "NDC" coordinate system