Shader test bench

Deinterlace.fs

vidvox-isf-files utility glsl runnable fragment MIT

runnable fragment

Complete GLSL fragment shader. Stronghold runs it directly when the browser can compile it.

Code

uniform sampler2D inputImage;
precision mediump float;
/*{
    "CATEGORIES": [
        "Utility"
    ],
    "CREDIT": "by zoidberg",
    "INPUTS": [
        {
            "NAME": "inputImage",
            "TYPE": "image"
        }
    ],
    "ISFVSN": "2"
}
*/

const vec2		pointOffset = vec2(0.0, 1.0);

void main() {
	vec4		outColor;
	//	"upper" (a.k.a. "the top row")
	if (fract((gl_FragCoord.y+0.5)/2.0) == 0.0)	{
		//gl_FragColor = vec4(1,0,0,1);
		outColor = (texture2D(inputImage, (gl_FragCoord.xy) / u_resolution.xy) + texture2D(inputImage, (gl_FragCoord.xy - pointOffset) / u_resolution.xy))/2.0;
		gl_FragColor = outColor;
	}
	//	"lower" (a.k.a. "the bottom row")
	else	{
		//gl_FragColor = vec4(0,1,0,1);
		outColor = (texture2D(inputImage, (gl_FragCoord.xy) / u_resolution.xy) + texture2D(inputImage, (gl_FragCoord.xy + pointOffset) / u_resolution.xy))/2.0;
		gl_FragColor = outColor;
	}
}

Code

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