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https://github.com/infinitefusion/infinitefusion-e18.git
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101 lines
3.8 KiB
Ruby
101 lines
3.8 KiB
Ruby
#=======================================================================
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# This module is a little fix that works around PC hardware limitations.
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# Since Essentials isn't working with software rendering anymore, it now
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# has to deal with the limits of the GPU. For the most part this is no
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# big deal, but people do have some really big tilesets.
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#
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# The fix is simple enough: If your tileset is too big, a new
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# bitmap will be constructed with all the excess pixels sent to the
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# image's right side. This basically means that you now have a limit
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# far higher than you should ever actually need.
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#
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# Hardware limit -> max tileset length:
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# 1024px -> 4096px
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# 2048px -> 16384px (enough to get the normal limit)
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# 4096px -> 65536px (enough to load pretty much any tileset)
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# 8192px -> 262144px
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# 16384px -> 1048576px (what most people have at this point)
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# ~Roza/Zoroark
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#=======================================================================
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module TileWrap
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TILESET_WIDTH = 0x100
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# Looks useless, but covers weird numbers given to mkxp.json or a funky driver
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MAX_TEX_SIZE = (Bitmap.max_size / 1024) * 1024
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MAX_TEX_SIZE_BOOSTED = MAX_TEX_SIZE**2/TILESET_WIDTH
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def self.clamp(val, min, max)
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val = max if val > max
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val = min if val < min
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return val
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end
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def self.wrapTileset(originalbmp)
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width = originalbmp.width
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height = originalbmp.height
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if width == TILESET_WIDTH && originalbmp.mega?
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columns = (height / MAX_TEX_SIZE.to_f).ceil
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if columns * TILESET_WIDTH > MAX_TEX_SIZE
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raise "Tilemap is too long!\n\nSIZE: #{originalbmp.height}px\nHARDWARE LIMIT: #{MAX_TEX_SIZE}px\nBOOSTED LIMIT: #{MAX_TEX_SIZE_BOOSTED}px"
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end
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bmp = Bitmap.new(TILESET_WIDTH*columns, MAX_TEX_SIZE)
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remainder = height % MAX_TEX_SIZE
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columns.times{|col|
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srcrect = Rect.new(0, col * MAX_TEX_SIZE, width, (col + 1 == columns) ? remainder : MAX_TEX_SIZE)
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bmp.blt(col*TILESET_WIDTH, 0, originalbmp, srcrect)
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}
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return bmp
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end
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return originalbmp
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end
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def self.getWrappedRect(src_rect)
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ret = Rect.new(0,0,0,0)
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col = (src_rect.y / MAX_TEX_SIZE.to_f).floor
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ret.x = col * TILESET_WIDTH + clamp(src_rect.x,0,TILESET_WIDTH)
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ret.y = src_rect.y % MAX_TEX_SIZE
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ret.width = clamp(src_rect.width, 0, TILESET_WIDTH - src_rect.x)
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ret.height = clamp(src_rect.height, 0, MAX_TEX_SIZE)
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return ret
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end
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def self.blitWrappedPixels(destX, destY, dest, src, srcrect)
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if (srcrect.y + srcrect.width < MAX_TEX_SIZE)
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# Save the processing power
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dest.blt(destX, destY, src, srcrect)
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return
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end
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merge = (srcrect.y % MAX_TEX_SIZE) > ((srcrect.y + srcrect.height) % MAX_TEX_SIZE)
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srcrect_mod = getWrappedRect(srcrect)
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if !merge
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dest.blt(destX, destY, src, srcrect_mod)
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else
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#FIXME won't work on heights longer than two columns, but nobody should need
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# more than 32k pixels high at once anyway
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side = {:a => MAX_TEX_SIZE - srcrect_mod.y, :b => srcrect_mod.height - (MAX_TEX_SIZE - srcrect_mod.y)}
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dest.blt(destX, destY, src, Rect.new(srcrect_mod.x, srcrect_mod.y, srcrect_mod.width, side[:a]))
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dest.blt(destX, destY + side[:a], src, Rect.new(srcrect_mod.x + TILESET_WIDTH, 0, srcrect_mod.width, side[:b]))
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end
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end
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def self.stretchBlitWrappedPixels(destrect, dest, src, srcrect)
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if (srcrect.y + srcrect.width < MAX_TEX_SIZE)
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# Save the processing power
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dest.stretch_blt(destrect, src, srcrect)
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return
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end
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# Does a regular blit to a non-megasurface, then stretch_blts that to
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# the destination. Yes it is slow
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tmp = Bitmap.new(srcrect.width, srcrect.height)
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blitWrappedPixels(0,0,tmp,src,srcrect)
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dest.stretch_blt(destrect, tmp, Rect.new(0,0,srcrect.width,srcrect.height))
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end
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end
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