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fog color calculation fix

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tmj-fstate
2018-02-21 23:13:06 +01:00
parent 40e77acb69
commit da9b1431ea
5 changed files with 51 additions and 16 deletions
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14
skydome.cpp
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@@ -243,7 +243,7 @@ void CSkyDome::RebuildColors() {
zenithluminance = PerezFunctionO1( perezluminance, m_thetasun, zenithluminance );
// start with fresh average for the new pass
glm::vec3 averagecolor { 0.0f, 0.0f, 0.0f };
glm::vec3 averagecolor, averagehorizoncolor;
// trough all vertices
glm::vec3 vertex;
@@ -333,14 +333,16 @@ void CSkyDome::RebuildColors() {
}
// save
m_colours[ i ] = color;
averagecolor += color * 8.0f; // save for edge cases each vertex goes in 8 triangles
averagecolor += color;
if( ( m_vertices.size() - i ) <= ( m_tesselation * 2 ) ) {
// calculate horizon colour from the bottom band of tris
averagehorizoncolor += color;
}
}
// NOTE: average reduced to 25% makes nice tint value for clouds lit from behind
// down the road we could interpolate between it and full strength average, to improve accuracy of cloud appearance
m_averagecolour = averagecolor / static_cast<float>( m_indices.size() );
m_averagecolour.r = std::max( m_averagecolour.r, 0.0f );
m_averagecolour.g = std::max( m_averagecolour.g, 0.0f );
m_averagecolour.b = std::max( m_averagecolour.b, 0.0f );
m_averagecolour = glm::max( glm::vec3(), averagecolor / static_cast<float>( m_vertices.size() ) );
m_averagehorizoncolour = glm::max( glm::vec3(), averagehorizoncolor / static_cast<float>( m_tesselation * 2 ) );
if( m_coloursbuffer != -1 ) {
// the colour buffer was already initialized, so on this run we update its content