Miroirs/waterfoul
1
0
Fork 0
mirror of https://github.com/colby-swandale/waterfoul synced 2024-12-26 21:58:54 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions

Extract loop invariant read

Browse source
This commit is contained in:
Benoit Daloze 2017-03-05 18:59:46 +01:00
parent c3e8074f96
commit b6be04497f
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
lib/waterfoul/ppu.rb
View file

@ -280,6 +280,7 @@ module Waterfoul
tile_line = line_adjusted % 8
# relative line number offset
tile_line_offset = tile_line * 2
palette = $mmu.read_memory_byte 0xFF47
0.upto(31) do |x|
tile = 0
if tiles_select == 0x8800
@ -304,7 +305,6 @@ module Waterfoul
pixel = (byte_1 & (0x1 << (7 - pixelx)) > 0) ? 1 : 0
pixel |= (byte_2 & (0x1 << (7 - pixelx)) > 0) ? 2 : 0
position = line_width + buffer_addr
palette = $mmu.read_memory_byte 0xFF47
color = (palette >> (pixel * 2)) & 0x3
@framebuffer[position] = rgb(color)