overte/libraries/render-utils/src/taa_blend.slf

<@include gpu/Config.slh@>
<$VERSION_HEADER$>
//  Generated on <$_SCRIBE_DATE$>
//
//  taa_blend.frag
//  fragment shader
//
//  Created by Sam Gateau on 8/17/2017
//  Copyright 2017 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//

<@include DeferredBufferWrite.slh@>

uniform sampler2D currentMap;
uniform sampler2D colorMap;
uniform sampler2D historyMap;
uniform sampler2D velocityMap;

in vec2 varTexCoord0;
layout(location = 0) out vec4 outFragColor;

struct TAAParams
{
	float debugX;
	float blend;
	float motionScale;
	float spareB;
};

layout(std140) uniform taaParamsBuffer {
    TAAParams params;
};

void main(void) {
    outFragColor = texture(currentMap, varTexCoord0);

    if (varTexCoord0.x > params.debugX) {
		return;
	}

	vec3 sourceColor = texture(colorMap, varTexCoord0).xyz;

	vec2 velocity = texture(velocityMap, varTexCoord0).xy;
    vec2 prevTexCoord = varTexCoord0 - params.motionScale * velocity;

    outFragColor = vec4(sourceColor, 1.0);

	if (abs(varTexCoord0.x - params.debugX) < (1.0 / 2048.0)) {
		outFragColor.rgb = vec3(1.0, 1.0, 0.0);
		return;
	}

    if (dot(velocity, velocity) > 0.0001) {
        outFragColor = vec4(0.0, 1.0, 1.0, 1.0);
    }


}