Sadly, the performance of newScreenshot() is terrible on this computer, so i wanted to see how practical it would be for use on everyone else's computer, and if it was related to the fact that this computer has 64MB VRAM in it
Code: Select all
function getcolours(image,x,y,p)
if x-1 > 0 and x+1 < 639 and y-1>0 and y+1 < 479 then
r1,g1,b1 = image:getPixel(x+p[1],y)
r2,g2,b2 = image:getPixel(x,y)
r3,g3,b3 = image:getPixel(x+p[1],y+p[2])
r4,g4,b4 = image:getPixel(x,y+p[2])
r = (r1+r2+r3+r4)/4
g = (g1+g2+g3+g4)/4
b = (b1+b2+b3+b4)/4
return r,g,b
else return image:getPixel(x,y) end
end
function shadermap(x, y, r, g, b, a)
--get the position relative to the pixel's chunk
if math.floor(x/2) == x/2 then
--rightmost
if math.ceil(y/2) == y/2 then
--bottom
r,g,b = getcolours(shot,x,y,{-1,-1})
else
--top
r,g,b = getcolours(shot,x,y,{-1,1})
end
else
--leftmost
if math.ceil(y/2) == y/2 then
--bottom
r,g,b = getcolours(shot,x,y,{1,-1})
else
--top
r,g,b = getcolours(shot,x,y,{1,1})
end
end
return r, g, b, a
end
function shader()
shot = love.graphics.newScreenshot( )
shot:mapPixel(shadermap)
shot = love.graphics.newImage(shot)
love.graphics.draw(shot,0,0)
end
so yeah, some results would be lovely, to see if it's worth developing a shader feature for ilopocalypse at all.
