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path: root/src/hardware_data/graphics/uze_atmega644_mode3_static-mode.lua
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-- Information:                             --
-- Video Mode 3 (official)                  --
--                                          --
-- Scroll Mode and Static Mode,             --
-- can be changed by compilation.           --
-- Default value is:                        --
-- SCROLLING=0 (Static Mode)                --
-- Available values are:                    --
-- SCROLLING=0 (Static Mode)                --
-- SCROLLING=1 (Scroll Mode)                --
--                                          --
-- Maximum sprites on screen and RAM tiles  --
-- can be changed by compilation.           --
-- In video mode 3, the maximum             --
-- sprites on screen is 20, due of limit    --
-- VRAM (4K) and CPU                        --
-- Default value is:                        --
-- RAM_TILE_COUNT=0                         --
-- RAM_TILE_COUNT is needed to change to    --
-- compile it.                              --
-- MAX_SPRITES=32 (20)                      --
-- MAX_RAMTILES=60                          --
-- Available values are:                    --
-- RAM_TILE_COUNT=1 to                      --
-- RAM_TILE_COUNT=255                       --
-- MAX_SPRITES=1 to MAX_SPRITES=20 or more, --
-- but is not recomended, due of hardware   --
-- limitation.                              --
-- MAX_RAMTILES=60 (unchangeable)           --
--                                          --
-- Horizontal tiles on screen and/or VRAM,  --
-- can be changed by compilation,           --
-- but is not recomended.                   --
-- Default value is:                        --
-- {SCREEN,VRAM}_TILES_H=30 if SCROLLING=0  --
-- and SCREEN_TILES_H == VRAM_TILES_H       --
-- SCREEN_TILES_H=28        if SCROLLING=1  --
-- VRAM_TILES_H=32          if SCROLLING=1  --
--                                          --
-- Vertical tiles on screen and/or VRAM,    --
-- can be changed by compilation,           --
-- but is not recomended.                   --
-- Default value is:                        --
-- {SCREEN,VRAM}_TILES_V=28 if SCROLLING=0  --
-- and SCREEN_TILES_V == VRAM_TILES_V       --
-- SCREEN_TILES_V=28        if SCROLLING=1  --
-- VRAM_TILES_V=32          if SCROLLING=1  --
-- Available value is:                      --
-- VRAM_TILES_V=32          if SCROLLING=1  --
-- VRAM_TILES_V=24          if SCROLLING=1  --
-- VRAM_TILES_V=16          if SCROLLING=1  --
--                                          --
-- Tile width size in pixels,               --
-- can be changed by compilation,           --
-- more that 224 pixels is not recommended. --
-- Default value is:                        --
-- TILE_WIDTH=8                             --
-- Available value is:                      --
-- TILE_WIDTH=1 to TILE_WIDTH=224 or more   --
--                                          --
-- Tile height size in pixels,              --
-- can be changed by compilation,           --
-- more that 224 pixels with scrolling or   --
-- 240 pixels without scrolling is not      --
-- recommended.                             --
-- Default value is:                        --
-- TILE_HEIGHT=8                            --
-- Available value is:                      --
-- TILE_HEIGHT=1 to TILE_HEIGHT=224 or more --
--   if SCROLLING=1                         --
-- TILE_HEIGHT=1 to TILE_HEIGHT=240 or more --
--   if SCROLLING=0                         --
--                                          --
-- Numbers of video lines to render,        --
-- can be changed by compilation,           --
-- but is not recommended, changes the      --
-- CPU cyles.                               --
-- Default value is:                        --
-- FRAME_LINES=SCREEN_TILES_V*TILE_HEIGHT   --
--                                          --
-- First render line is used to adjust      --
-- vertical centering if the value          --
-- FRAME_LINES is changed.                  --
-- Can be changed by compilation.           --
-- Default value is:                        --
-- FIRST_RENDER_LINE=20                     --

-- Sites:
-- http://uzebox.org/wiki/index.php?title=Video_Modes
-- http://uzebox.org/wiki/index.php?title=Video_Mode_3
-- http://uzebox.org/wiki/index.php?title=Ram_Tile_Effects_Primer
-- http://uzebox.org/wiki/index.php?title=Sprite_Techniques
-- http://uzebox.org/wiki/index.php?title=Hello_World
-- https://github.com/Uzebox/uzebox
-- https://raw.githubusercontent.com/Uzebox/uzebox/master/kernel/videoMode2/videoMode2.def.h
-- https://raw.githubusercontent.com/Uzebox/uzebox/master/kernel/videoMode2/videoMode2.s

return {
  screen  = {
    width    = 240,
    height   = 224,
    vsync    =  60,
    origin   = {
      x = 0,
      y = 0,
    },
    -- Total of unique texels, pixels and vertices on VRAM --
    pixels   = 17664,
    texels   =   276,
    vertices = false,
  },
  colours = {
    total       = 256,
    limit       = false,
    transparent = {
      sprite = colourKey,
      tile   = false,
    },
    palettes    = false,
  },
  meshes  = false,
  shaders = {
    api          = false,
    version      = false,
    fragment     = false,
    vectex       = false,
    geometry     = false,
    tessellation = false,
  },
  physic  = false,
  sprites = {
    -- Limit sprites on screen --
    onScreen  = 20,
    -- Limit sprites on line (scanline) without flickering (undocumented, but is visible with 10 or more) --
    onLine    = false,
    transform = {
      move   = true,
      rotate = false,
      scale  = 'flip',
      shear  = false,
      affine = false,
    },
    -- Sprite sizes in pixels --
    sizes     = {
      {
        width  = 8,
        height = 8,
      },
    },
  },
  tiles   = {
    layers = {
      {
        -- Total tiles and pixels on VRAM --
        onVRAM         = {
          screenSections = {
            all = {
              Xtiles =    30,
              Ytiles =    28,
              tiles  =   840,
              pixels = 53760,
            },
          },
          tiles          = 'screenSections',
          pixels         = 'screenSections',
        },
        -- Total tiles and pixels on screen (is same as VRAM) --
        onScreen       = 'vram',
        -- Total of unique tiles on VRAM --
        unique         = 256,
        screenSections = {
          mirror  = false,
          main    = {
            optional    = false,
            moveSection = false,
            {
              startSection = {
                x = 'startVRAM',
                y = 'startVRAM',
              },
              endSection   = {
                x = 'endVRAM',
                y = 'endVRAM',
              },
              size         = {
                -- Tile size in pixels --
                width  = 8,
                height = 8,
              },
              transform    = {
                move   = false,
                rotate = false,
                scale  = false,
                shear  = false,
                affine = false,
              },
            },
          },
          overlay = {
            optional    = true,
            moveSection = false,
            {
              startSection = {
                x = 'free',
                y = 'free',
              },
              endSection   = {
                x = 'free',
                y = 'free',
              },
              size         = {
                -- Tile size in pixels --
                width  = 8,
                height = 8,
              },
              transform    = {
                move   = false,
                rotate = false,
                scale  = false,
                shear  = false,
                affine = false,
              },
            },
          },
        },
      },
    },
  },
}