TheGameCreators - CodeBase - 2D dissolve shader

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Category: Graphics

Version: 1.0

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Uploaded: 11th Apr 2018 06:50

Modified: 11th Apr 2018 06:50

Author: fubarpk

Summary

color tints a whole image

Full Description

color tints a whole image with the use of a shader

AGKV2 BASIC Source Code

` This code was downloaded from The Game Creators

` It is reproduced here with full permission

` http://www.thegamecreators.com

SetWindowSize( 1024, 768, 0 )

SetVirtualResolution( 1024, 768 )

LoadImage(1,"texture1.jpg")

createShader()

CreateSprite(1,1)

LoadSpriteShader(1, "dissolve.ps")

SetSpriteShader( 1,1 )

resetTimer()

time#=Timer()

//SetShaderConstantByName(1,"myColor",-time#-,time#,-time#,0.2) //this will make the channels brighter

SetShaderConstantByName(1,"myColor",time#,time#,time#,0.2) //red green blue factor

if Timer()>7.0

resetTimer()

endif

print (time#)

sync()

loop

function createShader()

file = OpenToWrite("dissolve.ps")

WriteLine(file,"uniform sampler2D texture0;")

//WriteLine(file,"uniform float agk_time;")

WriteLine(file,"varying mediump vec2 uvVarying;")

WriteLine(file,"uniform vec4 myColor;")

WriteLine(file,"void main()")

WriteLine(file,"{")

WriteLine(file,"vec4 color = texture2D(texture0, uvVarying).rgba;")

WriteLine(file,"//color=color-vec4(100.0/255.0);") // (no branching) make 255 steps as the color in shaders go from 0 to 1

WriteLine(file,"color.r-=(myColor.x*myColor.w);")

WriteLine(file,"color.g-=(myColor.y*myColor.w);")

WriteLine(file,"color.b-=(myColor.z*myColor.w);")

WriteLine(file,"color = clamp(color,0.0,1.0);") //restricts color range

WriteLine(file,"gl_FragColor = color;")

WriteLine(file,"}")

CloseFile(file)

endfunction

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Author

Author Name:	fubarpk
CodeBase Entries:	12

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