MIPS-3D® ASE

• MIPS-3D technology achieves 37 million polygons/sec for transform, clip check and perspective divide operations and 15 million polygons/sec with complex lighting operations.
• MIPS-3D technology is both a cost-effective and an efficient way to achieve high-performance 3D geometry processing within the context of a MIPS64® architecture. It eliminates the need to deploy expensive, dedicated 3D geometry engines and provides excellent code reduction and execution times in common 3D geometry and lighting operations.
• MIPS-3D technology extends the MIPS64 architecture and leverages the established infrastructure of software, development systems, operating systems and other hardware and software development tools designed for the MIPS® architecture.

Instruction Usage

CVT.PS.PW and CVT.PW.PS

• Paired-single and paired-word instructions provide fast data format conversions

ADDR and MULR

• Reduction add and multiply instructions accelerate matrix multiplication, an important operation in vertex transformation

CABS and BC1ANYnx

• The absolute compare instruction and the multiple-condition code branch instruction are useful in image clipping, which consists of identifying and eliminating vertices that are outside the view volume

RECIP1 and RECIP2

• The perspective divide operation assists in transforming verticles to screen coordinates

RSQRT1 and RSQRT2

• Reciporcal square root instructions are used in the normalization functions found in infinite and local lighting

MIPS-3D floating-point instructions exploit the MIPS64 floating-point unit and the paired-single data type. The PS (paired-single) operations provide 2-way SIMD (single instruction multiple data) capability by operating on two 32-bit floating-point values packed into a single 64-bit register. The primary use for paired-single is to implement 3D geometry operations, such as transforms, clip checking and lighting, and shading calculations. It is also useful in boosting the performance of floating-point digital signal processing.