What GLperf scripts are used for OPC reporting?
The OPC has approved a set of 13 GLperf scripts for submission and publication. These are split into 10 RGB scripts and 3 color index scripts. Furthermore, the scripts are divided by functionality: the OPClist scripts (RGB and color index) contain a number of tests for a variety of graphics primitives and other operations (such as window clears). These are probably the closest parallel to primitive-level results available from most vendors today. Other scripts feature a specific graphics operation, for example, CopyPixl.rgb, DrawPixl.rgb, ReadPixl.rgb, TexImage.rgb measure glCopyPixels, glDrawPixels, glReadPixels and glTexImage2D RGB operations. DrawPixl.ndx and ReadPixl.ndx are the color index analogs to DrawPixl.rgb and ReadPixl.rgb. The remaining scripts address underlying graphics concepts that affect OpenGL performance – BgnEnd.rgb measures performance as it varies with the number of primitives batched together (in a glBegin/glEnd pair), FillRate.rgb measures how fast rasterizatio
