OpenSpace/modules/base/shaders/modelOpacity_fs.glsl

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2022                                                               *
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 * or substantial portions of the Software.                                              *
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#include "fragment.glsl"
#include "floatoperations.glsl"

in vec2 vs_st;

uniform float opacity = 1.0;

uniform sampler2D colorTexture;
uniform sampler2D depthTexture;
uniform sampler2D positionTexture;
uniform sampler2D normalTexture;

Fragment getFragment() {
  Fragment frag;

  vec4 textureColor = texture(colorTexture, vs_st);
  if (textureColor.a == 0.0 || opacity == 0.0) {
    discard;
  }

  frag.color.rgb = textureColor.rgb;
  frag.color.a = opacity * textureColor.a;

  frag.depth = denormalizeFloat(texture(depthTexture, vs_st).x);
  frag.gPosition = texture(positionTexture, vs_st);
  frag.gNormal = vec4(texture(normalTexture, vs_st).rgb, 0.0);
  frag.disableLDR2HDR = true;

  return frag;
}