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make graphics tests output the correct colors, fix dmg colors

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Matthew Berry 2021-05-12 01:00:37 -07:00
parent f2151a0a25
commit 9e2f742d1d
1 changed files with 31 additions and 23 deletions
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54
src/crab/gb/ppu.cr
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@ -1,3 +1,5 @@
require "stumpy_png"
# This file is simply designed to hold shared features of the scanline and FIFO
# renderers while the FIFO renderer is in active development. The purpose of
# this file is solely to reduce common changes to both renderers.
@ -114,6 +116,8 @@ module GB
WIDTH = 160
HEIGHT = 144
DMG_COLORS = [0x6BDF_u16, 0x3ABF_u16, 0x35BD_u16, 0x2CEF_u16]
@framebuffer = Slice(UInt16).new WIDTH * HEIGHT
@pram = Bytes.new 64
@ -164,28 +168,10 @@ module GB
def initialize(@gb : GB)
@cgb_ptr = gb.cgb_ptr
unless @cgb_ptr.value # fill default color palettes
# {% if flag? :pink %}
# @palettes[0] = @obj_palettes[0] = @obj_palettes[1] = [
# RGB.new(0xFF, 0xF6, 0xD3), RGB.new(0xF9, 0xA8, 0x75),
# RGB.new(0xEB, 0x6B, 0x6F), RGB.new(0x7C, 0x3F, 0x58),
# ]
# {% elsif flag? :graphics_test %}
# @palettes[0] = @obj_palettes[0] = @obj_palettes[1] = [
# RGB.new(0xFF, 0xFF, 0xFF), RGB.new(0xAA, 0xAA, 0xAA),
# RGB.new(0x55, 0x55, 0x55), RGB.new(0x00, 0x00, 0x00),
# ]
# @pram[0] = @pram[1] = @obj_pram[0] = @obj_pram[1] = 0xFF
# @pram.to_unsafe.as(UInt16*)[0] = 0x7FFF;
# {% else %}
# @palettes[0] = @obj_palettes[0] = @obj_palettes[1] = [
# RGB.new(0xE0, 0xF8, 0xCF), RGB.new(0x86, 0xC0, 0x6C),
# RGB.new(0x30, 0x68, 0x50), RGB.new(0x07, 0x17, 0x20),
# ]
# {% end %}
@pram.to_unsafe.as(UInt16*)[0] = @obj_pram.to_unsafe.as(UInt16*)[0] = @obj_pram.to_unsafe.as(UInt16*)[4] = 0x6BDF
@pram.to_unsafe.as(UInt16*)[1] = @obj_pram.to_unsafe.as(UInt16*)[1] = @obj_pram.to_unsafe.as(UInt16*)[5] = 0x3ABF
@pram.to_unsafe.as(UInt16*)[2] = @obj_pram.to_unsafe.as(UInt16*)[2] = @obj_pram.to_unsafe.as(UInt16*)[6] = 0x35BD
@pram.to_unsafe.as(UInt16*)[3] = @obj_pram.to_unsafe.as(UInt16*)[3] = @obj_pram.to_unsafe.as(UInt16*)[7] = 0x2CEF
@pram.to_unsafe.as(UInt16*)[0] = @obj_pram.to_unsafe.as(UInt16*)[0] = @obj_pram.to_unsafe.as(UInt16*)[4] = DMG_COLORS[0]
@pram.to_unsafe.as(UInt16*)[1] = @obj_pram.to_unsafe.as(UInt16*)[1] = @obj_pram.to_unsafe.as(UInt16*)[5] = DMG_COLORS[1]
@pram.to_unsafe.as(UInt16*)[2] = @obj_pram.to_unsafe.as(UInt16*)[2] = @obj_pram.to_unsafe.as(UInt16*)[6] = DMG_COLORS[2]
@pram.to_unsafe.as(UInt16*)[3] = @obj_pram.to_unsafe.as(UInt16*)[3] = @obj_pram.to_unsafe.as(UInt16*)[7] = DMG_COLORS[3]
end
@ran_bios = @cgb_ptr.value
end
@ -424,7 +410,29 @@ module GB
end
def write_png : Nil
@gb.display.write_png @framebuffer
canvas = StumpyPNG::Canvas.new WIDTH, HEIGHT
HEIGHT.times do |row|
WIDTH.times do |col|
bgr5 = @framebuffer[row * WIDTH + col]
if @cgb_ptr.value
blue = bits(bgr5, 10..14)
green = bits(bgr5, 5..9)
red = bits(bgr5, 0..4)
color = StumpyPNG::RGBA.from_rgb8(red << 3 | red >> 2, green << 3 | green >> 2, blue << 3 | blue >> 2)
else
grey = case bgr5
when DMG_COLORS[0] then 0xFF
when DMG_COLORS[1] then 0xAA
when DMG_COLORS[2] then 0x55
when DMG_COLORS[3] then 0x00
else abort "Invalid BGR5 color while dumping image: #{hex_str bgr5}"
end
color = StumpyPNG::RGBA.from_rgb8(grey, grey, grey)
end
canvas[col, row] = color
end
end
StumpyPNG.write(canvas, "out.png")
end
end
end