waterfall.txt

#version 330 core

uniform vec4 iResolution;
uniform vec4 iMouse;
uniform vec4 iGlobalTime;

uniform sampler2D iTexture0; // Albedo

uniform mat4 iModelMatrix;
uniform mat4 iViewMatrix;
uniform mat4 iProjectionMatrix;
uniform mat4 iInverseViewMatrix;
uniform mat4 iModelViewMatrix;
uniform mat4 iModelViewProjectionMatrix;
uniform mat4 iTransposeInverseModelMatrix;
uniform mat4 iTransposeInverseModelViewMatrix;

// BEGIN --- Input Interpolants --- 
	smooth in vec3 iPosition;
	smooth in vec3 iPositionWorld;
	smooth in vec3 iPositionCamera;
	smooth in vec3 iNormal;
	smooth in vec3 iNormalWorld;
	smooth in vec3 iNormalCamera;
	smooth in vec2 iTexCoord0;
	smooth in vec2 iTexCoord1;
// END --- Input Interpolants --- 

// BEGIN --- Framebuffer Outputs --- 
	layout(location = 0) out vec4 out_color;
// END --- Framebuffer Outputs --- 

/*
void main(void) {
	vec4 col = texture(iTexture0, iTexCoord0.xy);
	float i = abs(sin(15.0 * col.w + iGlobalTime.x * 6.0) * 3.0 * col.w) * 0.7;
	out_color = vec4(i * 0.2, i * 0.48, i, 0.0);
}
*/
void main(void)
{

	vec2 uv =  iTexCoord0.xy/-1.0;
	
    

    float yOffset = iGlobalTime.x*0.5;
    float y = mod(uv.y+yOffset,1.0);
    

 
	float red 	=   texture(iTexture0, vec2(uv.x,y)).r;
	float green = 	texture(iTexture0, vec2(uv.x,y)).g;
	float blue 	=	  texture(iTexture0, vec2(uv.x,y)).b;
  float alpha 	=	  texture(iTexture0, vec2(uv.x,y)).a;
	
	
	out_color = vec4(red,green,blue,alpha);
}