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마지막の글 - 페이지 #281

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Wyldanimal
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Joined in Mar 2008
17197 글

Discussions for Scenes for Version 1.2.X Fullscreen Mode here

iStripper에 관한 모든 것
January 12, 2023, 5061 답변
Is there a way to include two textures into one sprite's fragment shader?

Have a look at this post.
https://www.istripper.com/forum/thread/27449/137?post=750264

I use two Sources and Combine them in one Shader.
Sources can be Images, Shaders, clips



in the scene file
sprite {
size: 1920, 1080
pos: 0, 0
source: Sweet,0 // combine 0
source: Stage,1 // combine 1
shader: fragment, Shaders/Combine-Exclude/combine2.fsh
blend: false
}

in the shader

#version 140

#extension GL_ARB_compatibility : enable
#extension GL_ARB_fragment_coord_conventions : enable
#extension GL_KHR_blend_equation_advanced : enable
// get inputs from scene
// if an input is missing it will default to 1.0
uniform float zeroPercent;
uniform float onePercent;
uniform float mixPercent;

uniform sampler2D texture0;
uniform sampler2D texture1;
varying vec4 gl_TexCoord[];


void main(void)
{
vec4 vTexCoord = gl_TexCoord[0];
float mixP = 0.0;
float oneP = 0.0;
float zeroP = 0.0;

highp vec4 zero = texture2D(texture0,vTexCoord.xy); // input zero 0
highp vec4 one = texture2D(texture1, vTexCoord.xy); // input one 1

// test all the inputs, if 0. then set to 1.0
if (mixPercent == 0.) {mixP = 1.0;} else { mixP = mixPercent;
}
if (onePercent == 0.) {oneP = 1.0;} else { oneP = onePercent;
}
if (zeroPercent == 0.) {zeroP = 1.0;} else { zeroP = zeroPercent;
}

// combine the inputs using the percentage values
gl_FragColor = ((mixP * ( (zeroP * zero) + (mixP * one)) ) * gl_Color);
gl_FragColor.a = (one.a * zero.a); // make the alpha the combined apha of both input channels

}

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