本篇論文提出一個全新且具有跨平台能力，針對嵌入式系統所設計的圖形效能調校引擎GPTT (Graphics Performance Tuning Tool)。其主要的目的在於幫助遊戲或應用程式開發人員，去發掘其所開發的軟體在圖形上的效能瓶頸主要發生在著色管線的那一個部份，開發人員在根據此效能資訊去調整花費時間做的部份，提升整體軟體的執行速度，以充分提升系統使用率。

在跨平台方面，我們主要是將整個效能調校工具與現行的圖形函式庫OpenGL ES綁在一起已達到跨平台的能力，換句話說，我們擴充了原本圖形函式庫的功能，進一步的偵測其繪圖管線各個部位所花費的執行時間及工作量，以提供軟體開發人員精確的效能資訊，來得知軟體系統的效能瓶頸發生在哪個部位。

This thesis presents a new cross-platform graphics performance tool, GPTT (Graphics Performance Tuning Tool), which is designed for helping developers to find the performance bottleneck of their games or applications on embedded systems. The functions of performance tool are embedded into the standard graphics library, OpenGL ES, to achieve cross-platform. In order to verify the proposed tool, we also implement the OpenGL ES specification in addition to the tool itself. The performance tool is separated into visualization part and measurement part from which it successfully decreases the load in embedded system, while running the application. Via the tool it identifies many bottlenecks that can be improved.

Chapter 1 Introduction 1
Chapter 2 Related Work 3
2.1 OpenGL ES 3
2.1.1 OpenGL ES as a State Machine 4
2.1.2 Rendering Pipeline of OpenGL ES 1.X and 2.0 5
2.2 Existing Benchmarks 6
2.2.1 SPMark04 and 3DMark Mobile06 6
2.2.2 SPECviewperf 9
2.3 Graphics Debugger Tools 11
2.3.1 NVperfHDU 11
2.3.2 gDEBugger 12
2.4 Related Researches 13
Chapter 3 The Graphics Performance Tuning Tool 15
3.1 System Overview 15
3.2 The Workloads 17
3.2.1 General Workloads 17
3.2.2 Detailed Measurements 19
3.3 Functions Definition of GPTT 22
Chapter 4 Implementation 25
4.1 The Implementation of OpenGL ES 25
4.1.1 Challenges 27
4.1.2 Performance Enhancement 28
4.2 The Implementation of GPTT 31
4.2.1 Overhead of GPTT 31
4.2.2 User Interface 32
4.2.3 Bottleneck Analysis Using GPTT 38
Chapter 5 Conclusions and Future Work 41
References 42
Appendix A The GPTT System: A Specification 44
Implementation of General Workloads 45
Implementation of Detailed Measurements 47
The Extension Functions List and Description 50

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