-- Information:                             --
-- PPU (Picture processing unit)            --
-- RP2C03/RP2C04/RP2C05 with MMC5           --
-- (Memory management controller)           --

return {
  screen  = {
    width    = 256,
    height   = 224,
    vsync    =  60.0985,
    origin   = {
      x =  0,
      y = -8,
    },
    -- Total of unique texels, pixels and vertices on VRAM --
    pixels   = 1081344,
    texels   =   16640,
    vertices = false,
  },
  colours = {
    total       = 64,
    limit       = false,
    transparent = {
      sprite = 'colourKey',
      tile   = 'colourKey',
    },
    tileDepth   = 'colourKey',
    palettes    = {
      {
        total   = 1,
        type    = 'perTexel',
        colours = 4,
        layers  = false,
      },
    },
  },
  meshes  = false,
  shaders = {
    api          = false,
    version      = false,
    fragment     = false,
    vectex       = false,
    geometry     = false,
    tessellation = false,
  },
  physic  = false,
  sprites = {
    -- Limit sprites on screen --
    onScreen  = 256,
    -- Limit sprites on line (scanline) without flickering --
    onLine    =  8,
    unique    = 256,
    transform = {
      move   = true,
      rotate = false,
      scale  = 'flip',
      shear  = false,
      affine = false,
    },
    -- Sprite sizes in pixels --
    sizes     = {
      {
        width  =  8,
        height =  8,
      },
      {
        width  =  8,
        height = 16,
      },
    },
  },
  tiles   = {
    layers = {
      {
        -- Total tiles and pixels on VRAM --
        onVRAM         = {
          screenSections = {
            all = {
              Xtiles =     64,
              Ytiles =     60,
              tiles  =   3840,
              pixels = 245760,
            },
          },
          tiles          = 'screenSections',
          pixels         = 'screenSections',
        },
        -- Total tiles and pixels on screen --
        onScreen       = {
          screenSections = {
            -- On screen section with support scrolling X and/or Y, --
            -- will be include one tile by axis                     --
            all = {
              Xtiles =     32+1,
              Ytiles =     30+1,
              tiles  =    960+32+30+1,
              pixels =  61440,
            },
          },
          tiles          = 'screenSections',
          pixels         = 'screenSections',
        },
        -- Total of tiles on VRAM --
        unique         = {
          data       = 256+256,
          background = 'data',
          total = 512,
        },
        maximum        = 16384,
        mirror         = {
          switchable = true,
          nametables = 4,
          'horizontal',
          'vertical',
          '1 screen',
          '4 screen',
          'diagonal',
          'l shaped',
          '3 screen vertical',
          '3 screen horizontal',
          '3 screen diagonal',
        },
        screenSections = {
          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   = true,
                rotate = false,
                scale  = false,
                shear  = false,
                affine = false,
              },
            },
          },
          overlay0 = {
            optional    = true,
            moveSection = true,
            {
              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,
              },
            },
          },
          overlay1 = {
            optional    = true,
            moveSection = true,
            {
              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,
              },
            },
          },
          overlay2 = {
            optional    = true,
            moveSection = true,
            {
              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,
              },
            },
          },
        },
      },
    },
  },
}