Ton Roosendaal
e47137ff42
images (like used for rendering icons). When working during Orange on new render pipeline, I've left this topic alone for a while... subpixel precision testing is very time consuming and needs concentration for a while. :) This commit brings back precision as it was for 2.41. Below a short explanation of the solved issues. - the window matrix for rendering is kept constant during all OSA passes, this to ensure clipping happens for each pass identically. - a subpixel offset is only applied on filling in the z-buffer - this offset is inverse corrected for shadepixel code, only on 2 places Another nasty issue is that for filtered rendering (gauss etc), the tiles (or entire image) is temporally increased 2 pixel in size. This caused a 'dark' (or sky color) edge on the rendering. During Orange that was solved with a hardcoded clipping offset value, which only corrected for larger pictures (like > 500 pixels in size). Now this clipping offset is correctly calculated, based on render size. Last issue: the view border in 3d window was calculated using integers, giving small errors in display too. Now it uses float, so visually the view border is more close to what a render shows.