class

GBA::PPU

Inherits Reference < Object

Constants

SPRITE_PIXEL = SpritePixel.new(4, 0, false, false)

Constructors

new(gba : GBA)

Source

Instance methods

[](io_addr : UInt32) : UInt8

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[]=(io_addr : UInt32, value : UInt8) : Nil

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bitmap?

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blend(top : UInt16, bot : UInt16, blend_mode : BlendMode) : UInt16

Simple blending routine just to mix two UInt16 colors.

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blend(top : Color, bot : Color, effects_enabled : Bool) : UInt16

Blend the colors handling special-case sprite logic.

Source

calculate_color(col : Int) : UInt16

Calculate the color at the current position.

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composite(scanline : Slice(UInt16)) : Nil

draw

end_hblank

frame

frame=(frame : Bool)

framebuffer

get_enables(col : Int) : Tuple(UInt16, Bool)

Returns a u16 representing the layer enable bits and a bool indicating whether effects are enabled.

Source

oam

Source

pram

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render_aff_bg(bg : Int) : Nil

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render_reg_bg(bg : Int) : Nil

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render_sprites

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scanline

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se_address(tx : Int, ty : Int, screen_size : Int) : Int

Get the screen entry offset from the tile x, tile y, and background screen-size param using tonc algo

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select_top_colors(enable_bits : Int, col : Int) : Tuple(Color, Color)

Select the top two colors at the current position.

start_hblank

start_line

vram