overte-HifiExperiments/libraries/render-utils/src/stars.slv

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<@include gpu/Config.slh@>
<$VERSION_HEADER$>
// Generated on <$_SCRIBE_DATE$>
//
// standardTransformPNTC.slv
// vertex shader
//
// Created by Sam Gateau on 6/10/2015.
// Copyright 2015 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 gpu/Inputs.slh@>
<@include gpu/Color.slh@>
<@include gpu/Transform.slh@>
<$declareStandardTransform()$>
// TODO we need to get the viewport resolution and FOV passed to us so we can modify the point size
// and effectively producing a points that take up a constant angular size regardless of the display resolution
// or projection matrix
out vec4 varColor;
out float varSize;
void main(void) {
varColor = colorToLinearRGBA(inColor);
// standard transform
TransformCamera cam = getTransformCamera();
TransformObject obj = getTransformObject();
<$transformModelToClipPos(cam, obj, inPosition, gl_Position)$>
varSize = inColor.a;
gl_PointSize = varSize;
}