Verification and Performance Verification and Performance Estimation Environment for 3D Estimation Environment for 3D Graphics Geometry Acceleration Graphics Geometry Acceleration SystemSystem

995022Young-Su Kwon

System-Level SimulationSystem-Level Simulation

Target Verification of 3D graphics system using

HW/SW modeling. Performance estimation of 3D graphics

system early in the design time. Simulation of HW/SW systems

Modeling the behavior of a system based on the behavior of the HW & SW systems

Why is it needed? For the verification of the functionality. For the architectural selection early in the

design time according to the performance.

Rendering(Vertex renderingto frame buffer)

Simulation EnvironmentSimulation Environment

Geometry Processing

(Vertex coordinatesand color calculation)

ContextSetting

HSM(Hardware Simulation Model)

VirtualMemory

ISS(VLIW

processormodel)

API

Voodoo2

SSM(Software Simulation Model)

Performance EstimationPerformance Estimation

Architecture selection(Definition of API interface)

Classification of timing-cosuming part

Time measurement of each part

Real application programrunning

•SSM• core geometry part• context setting part• rendering part

• Transaction • HSM

• kernel running part

App. Area

System OperationSystem Operation

glBegin()

glEnd()

VB(i) filling

glBegin()

glEnd()

Vb(i+1) filling

App. Area

FGA comm.

FGA comm.

TransformedVB(i-1) & context

VB(i)

TransformedVB(i) & context

VB(i+1)

Geometry processing

onVB(i)

FGA comm.

Geometry processing

onVB(i-1)

FGA comm.Geometry processing

context i

context i+1

RE control

RE control

context i

context i+1

context i

context i-1

PitfallPitfall glBegin()/glEnd() 사이에서 Vertex filling 을

하던 중 FGA 용 VB size 를 초과했을 때 New glBegin/End 로 assume.

App. Area

glBegin()

VB(i) filling

glEnd()

Vb(i+1) filling

FGA comm.VB(i)

Geometry processing

onVB(i)

FGA comm.

Geometry processing

onVB(i-1)

context i

context i

RE control

context i

context i