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* more accurate flags (push/pop busy, test busy, vertex/poly overflow)

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* more versatile and better clipping code
This commit is contained in:
StapleButter
2017-04-09 16:12:12 +02:00
parent 28ebd56fb8
commit de4b046232
3 changed files with 190 additions and 239 deletions
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5
src/GPU2D.cpp
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@ -32,6 +32,8 @@
// * VRAM/FIFO display modes convert colors the same way
// * 3D engine converts colors differently (18bit = 15bit * 2 + 1, except 0 = 0)
// * 'screen disabled' white is 63,63,63
// * [Gericom] bit15 is used as bottom green bit for palettes. TODO: check where this applies.
// tested on the normal BG palette and applies there
//
// oh also, changing DISPCNT bit16-17 midframe doesn't work (ignored? applied for next frame?)
// TODO, eventually: check whether other DISPCNT bits can be changed midframe
@ -68,6 +70,9 @@
// * if BG0 is selected as 1st target, destination not selected as 2nd target:
// brightness up/down effect is applied if selected. if blending is selected, it doesn't apply.
// * 3D layer pixels with alpha=0 are always transparent.
//
// mosaic:
// * mosaic grid starts at 0,0 regardless of the BG/sprite position
GPU2D::GPU2D(u32 num)