4 Commits

Author	SHA1	Message	Date
Robert Bragg	19b8622983	Optimize culling by doing culling in eye-coordinates ... This implements a variation of frustum culling whereby we convert screen space clip rectangles into eye space mini-frustums so that we don't have to repeatedly transform actor paint-volumes all the way into screen coordinates to perform culling, we just have to apply the modelview transform and then determine each points distance from the planes that make up the clip frustum. By avoiding the projective transform, perspective divide and viewport scale for each point culled this makes culling much cheaper.	2011-03-07 13:26:20 +00:00
Robert Bragg	013b2433f0	viewport: consistently use floats for viewports ... OpenGL < 4.0 only supports integer based viewports and internally we have a mixture of code using floats and integers for viewports. This patch switches all viewports throughout clutter and cogl to be represented using floats considering that in the future we may want to take advantage of floating point viewports with modern hardware/drivers.	2011-03-07 13:26:19 +00:00
Emmanuele Bassi	cf46c8197e	Add copyright notices	2010-10-21 13:13:00 +01:00
Emmanuele Bassi	cf3a29f224	Clean up clutter-private.h/5 ... Move PaintVolume private API to a separate header.	2010-10-21 12:22:17 +01:00