Difference between revisions of "love.graphics.setPixelEffect"

(Created page with "{{newin|0.8.0|080|type=function}} Sets or resets a PixelEffect as the current pixel shader. All drawing operations until the next ''love.graphics.setPixelEffect'' will b...")
 
(Adding example)
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{{newin|[[0.8.0]]|080|type=function}}
 
{{newin|[[0.8.0]]|080|type=function}}
  
−
Sets or resets a [[PixelEffect]] as the current pixel shader. All drawing operations until the next ''love.graphics.setPixelEffect'' will be drawn using the [[PixelEffect]] object specified.
+
Sets or resets a [[PixelEffect]] as the current pixel effect. All drawing operations until the next ''love.graphics.setPixelEffect'' will be drawn using the [[PixelEffect]] object specified.
  
 
== Function ==
 
== Function ==
Line 26: Line 26:
 
=== Notes ===
 
=== Notes ===
 
Disables pixel effects, allowing unfiltered drawing operations.
 
Disables pixel effects, allowing unfiltered drawing operations.
 +
 +
== Examples ==
 +
=== Drawing a rectangle using a pixel effect ===
 +
<source lang="lua">
 +
function love.load()
 +
    effect = love.graphics.newPixelEffect [[
 +
        extern number time;
 +
        vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords)
 +
        {
 +
            return vec4((1.0+sin(time))/2.0, abs(cos(time)), abs(sin(time)), 1.0);
 +
        }
 +
    ]]
 +
end
 +
 +
function love.draw()
 +
    -- boring white
 +
    love.graphics.setPixelEffect()
 +
    love.graphics.rectangle('fill', 10,10,790,285)
 +
 +
    -- LOOK AT THE PRETTY COLORS!
 +
    love.graphics.setPixelEffect(effect)
 +
    love.graphics.rectangle('fill', 10,305,790,285)
 +
end
 +
 +
local t = 0
 +
function love.update(dt)
 +
    t = t + dt
 +
    effect:send("time", t)
 +
end
 +
</source>
  
 
== See Also ==
 
== See Also ==

Revision as of 02:27, 16 August 2011

Available since LÖVE 0.8.0
This function is not supported in earlier versions.


Sets or resets a PixelEffect as the current pixel effect. All drawing operations until the next love.graphics.setPixelEffect will be drawn using the PixelEffect object specified.

Function

Synopsis

love.graphics.setPixelEffect( pixeleffect )

Arguments

PixelEffect pixeleffect
The new pixel effect.

Returns

Nothing.

Notes

Sets the current pixel shader to a specified PixelEffect. All drawing operations until the next love.graphics.setPixelEffect will be drawn using the PixelEffect object specified.

Function

Synopsis

love.graphics.setPixelEffect( )

Arguments

None.

Returns

Nothing.

Notes

Disables pixel effects, allowing unfiltered drawing operations.

Examples

Drawing a rectangle using a pixel effect

function love.load()
    effect = love.graphics.newPixelEffect [[
        extern number time;
        vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 pixel_coords)
        {
            return vec4((1.0+sin(time))/2.0, abs(cos(time)), abs(sin(time)), 1.0);
        }
    ]]
end

function love.draw()
    -- boring white
    love.graphics.setPixelEffect()
    love.graphics.rectangle('fill', 10,10,790,285)

    -- LOOK AT THE PRETTY COLORS!
    love.graphics.setPixelEffect(effect)
    love.graphics.rectangle('fill', 10,305,790,285)
end

local t = 0
function love.update(dt)
    t = t + dt
    effect:send("time", t)
end

See Also


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