view shaders/default.f.glsl @ 2208:3809a0bd680e

Fix a couple of Z80 debugger issues
author Michael Pavone <pavone@retrodev.com>
date Sat, 27 Aug 2022 22:02:09 -0700
parents f3cca4b3f17a
children
line wrap: on
line source


uniform sampler2D textures[2];
uniform mediump vec2 texsize;

varying mediump vec2 texcoord;

void main()
{
	mediump vec2 modifiedCoord0 = vec2(texcoord.x, (floor(texcoord.y * texsize.y + 0.25) + 0.5)/texsize.y);
	mediump vec2 modifiedCoord1 = vec2(texcoord.x, (floor(texcoord.y * texsize.y - 0.25) + 0.5)/texsize.y);
	gl_FragColor = mix(
		texture2D(textures[1], modifiedCoord1),
		texture2D(textures[0], modifiedCoord0),
		(sin(texcoord.y * texsize.y * 6.283185307) + 1.0) * 0.5
	);
}