I don't even need to post a .love to demonstrate this.Ratchet wrote:Can someone make a shader that makes a monitor bulge effect like this?
Mari0 has a shader like this but I don't know how to use it in 0.9.0.
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function love.load()
canvas = love.graphics.newCanvas()
local str = love.filesystem.read('CRT.frag')
shader = love.graphics.newShader(str)
shader:send('inputSize', {love.graphics.getWidth(), love.graphics.getHeight()})
shader:send('textureSize', {love.graphics.getWidth(), love.graphics.getHeight()})
end
function love.draw()
love.graphics.setCanvas(canvas)
--draw stuff here
love.graphics.setCanvas()
love.graphics.setShader(shader)
love.graphics.draw(canvas)
love.graphics.setShader()
end
Increase the last number in line 124 of CRT.frag. 0.5 seems okay.Ratchet wrote:Fantastic, thanks!
EDIT: Is there a way to make the scanlines more transparent? Everything looks so dark. Maybe a alpha of 0.5 for the scanlines would be nice
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vec4 weights = vec4(distance / 0.5);
Thanks for posting that shader! I'm learning how to use them too, and so I decided to try and base something off of yours, just without the brightness problems associated with making RGB values follow a sine wave patternbeforan wrote:this is pretty simple stuff, and sorry if it's duplicated but I couldn't find one from cursory searching:
a colour cycling shader!
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gfx.setColor(255, 255, 255)
gfx.print("Increase/Decrease transition speed: Up/Down")
gfx.setShader(shader)
gfx.draw(img, wdw.getWidth() / 2 - img:getWidth() / 2, wdw.getHeight() / 2 - img:getHeight() / 2)
gfx.setShader()
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gfx.print("Increase/Decrease transition speed: Up/Down")
gfx.setColor( 255 * c[1], 255 * c[2], 255 * c[3] )
gfx.draw(img, wdw.getWidth() / 2 - img:getWidth() / 2, wdw.getHeight() / 2 - img:getHeight() / 2)
Aw crapCode: Select all
extern float strength;
vec4 effect(vec4 color, Image tex, vec2 tC, vec2 pC){
float[10] sample;
for(int i = 0; i < 10; i++){
sample[i] = (i - 5) / strength;
}
vec2 dir = (.5 - tC) * -1;
float dist = sqrt(dir.x * dir.x + dir.y * dir.y);
dir = dir/dist;
vec4 c = Texel(tex, tC);
vec4 sum = color;
for(int i = 0; i < 10; i++){
sum += Texel(tex, tC + dir * sample[i] * strength / 50);
}
sum /= 10;
float t = dist * strength;
t = clamp(t, 0, 1);
return mix(c, sum, t);
}Code: Select all
extern float strength;
vec4 effect(vec4 color, Image tex, vec2 tC, vec2 pC){
vec2 dir = .5 - tC;
float dist = sqrt(dir.x * dir.x + dir.y * dir.y);
vec4 c = Texel(tex, tC);
float t = dist * strength;
t = clamp(t, 0, 1);
return mix(c, vec4(0), t);
}
