** SEGA GENESIS - MEGA VALKYRIE ** Formerly the 3D engine- now becoming a game ! Since last showing : Back face culling of objects added - increase performance by 15% !! Basically we don't draw what gets overdrawn which saves performance - Some scripting helped to sort models into cullable ones and ones that weren't and also analysed co-planer triangles and reworked those to quads for the engine ( a quad is faster vs 2 triangles ) . Optimised quad drawing ~ 2% gain, saved some resetting of the DDA points amongst shared sections. Optimised joypad reading ~ 0.8% speedup every cycle counts haha. Added dither patterns to the renderer so dithered surfaces can be used - only a slight hit to draw speed. Modified the vblank dma timing to allow XGM2 driver to run at full speed without lagging , so now we can switch from XGM1 to XGM2 and gained 5% cpu performance. Added a basic Enemy - much more complex ones to come , hes using the same movement logic as the player attract mode before. No destruction or collision checking yet . Added player attacks - nothing final but a good start. Reworked the camera to keep a constant background load on here so its indicative of a real stage. Maintaining a solid 20 FPS in this demo. @TonimanGalvez is doing great work on map layout and huds, hes made some very nice internal renders of how the game will look once fully populated. Music is a placeholder for now, kindly provided by @laurent_crouzet so we can model music load in the game. #SGDK #SegaMegadriver #SegaGenesis

** EHB - Sega Genesis Bullet Hell ** Another day , another 20%+ speedup , now maintaining 60 FPS - 99% of the time. During transitions from fixed ( red ) to random ( blue ) trajectories a few frames below 60 FPS but now after the transitions holding 60 fps with some buffer to spare , about 82 % CPU with near 320 sprites onscreen , 360 capable. Sprite pattern updates on the multiplexor at this density are a bit intensive, so couple of minor frames drop as new patterns are cached. I do need to spend some cpu on other things besides bullets so this is a good step and proves I'll will be able to push the sprite counts very high without slowdown. #SGDK #SegaMegaDrive #SegaGenesis