Grade My Waterbear by Scoopex [web]
s C O O P E x ................... : : _____ _____ _____ _____ : _____ _____ ______ ___\_ \____\_ \____\_ \____\_ \____\_ \____\_ \_\ /____ __/ /____/ /____/ / __/ / __/ _/ __/ /____/ /__ / \ \___ \ /___\ / \ / \ \___\ __/_\ \___ \/ / / / / / / / / / / / / / / /_ ¯\______ /¯\______ /¯\______ /¯\______ /____/ cRu ¯\______ /____/ / \ \/ \/ \/ \/ \/ /________\ : : g E N E R A T i O N s a H E A d : Present in 2016 : ................... - [ Grade My Waterbear ] - OCS Demo System requirements: Amiga OCS 1MB or higher. A quick demo for Amiga OCS, released at Tokyo Demofest 2016. Demonstrates a truecolor Copperchunky mode Rotozoomer effect running at full framerate on Amiga 500. Technical info: -------------- The Amiga copper can move 57 words per scanline. With required WAIT and SKIP instructions, this is reduced to 53. 1 move is required to reset the back- ground color for the borders, so 52. 2 more moves are required for copper loop branching, so 50. This results in a generally useful RGB Copperchunky mode for OCS that can be updated at any framerate. There is an optimal horizontal Copper WAIT position. It was abandoned here for the sake of centering, revealing an AGA timing difference from the OCS and ECS Copper on some AGA machines (regardless of Display Options). This is not yet explained and the visual result is what looks like slight "pixel grid columns". The Rotozoomer has very high precision, much higher than 1x1 texel filling the screen. All parameters are dynamic and 32/16-bit. It uses no look-up tables; this demo is 100% real-time. The texture is a plain quad of RGB color words, its size limited only by the available memory. The demo uses two 320x320 textures. Code,font: Photon Music: Notorious Scoopex are active on Amiga and are looking for talented artists to join our forces! If you have what it takes, don't hesitate to contact us via scoopex1988.org or Facebook.
[ back to the prod ]