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Fix low angle odd colors for Earthview

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Thorsten Renk 2015-04-18 09:29:04 +03:00
parent 98f25e6579
commit bc184f21de
4 changed files with 40 additions and 9 deletions
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1
Effects/planet-cloudlayer.eff
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@ -112,6 +112,7 @@
<program>
<vertex-shader>Shaders/planet.vert</vertex-shader>
<fragment-shader>Shaders/planet-cloudlayer.frag</fragment-shader>
<fragment-shader>Shaders/noise.frag</fragment-shader>
</program>
<uniform>

1
Effects/planet.eff
View file

@ -118,6 +118,7 @@
<program>
<vertex-shader>Shaders/planet.vert</vertex-shader>
<fragment-shader>Shaders/planet.frag</fragment-shader>
<fragment-shader>Shaders/noise.frag</fragment-shader>
<attribute>
<name>tangent</name>
<index>6</index>

17
Shaders/planet-cloudlayer.frag
View file

@ -13,7 +13,7 @@ uniform bool use_overlay;
uniform sampler2D texture;
uniform sampler2D structure_texture;
float Noise2D(in vec2 coord, in float wavelength);
float luminance(vec3 color)
{
@ -64,7 +64,20 @@ void main()
color = clamp(color, 0.0, 1.0);
texel = texture2D(texture, gl_TexCoord[0].st);
structureTexel = texture2D(structure_texture, 20.0 * gl_TexCoord[0].st);
if (use_overlay) {texel = vec4(structureTexel.rgb, texel.a * structureTexel.a);}
float noise = Noise2D( gl_TexCoord[0].st, 0.01);
noise += Noise2D( gl_TexCoord[0].st, 0.005);
noise += Noise2D( gl_TexCoord[0].st, 0.002);
//vec4 noiseTexel = vec4 (1.0,1.0,1.0, smoothstep(0.3,1.2,noise) * texel.a);
vec4 noiseTexel = vec4 (1.0,1.0,1.0, 0.5* noise * texel.a);
structureTexel = mix(structureTexel, noiseTexel,noiseTexel.a);
if (use_overlay)
{
texel = vec4(structureTexel.rgb, texel.a * structureTexel.a);
}
fragColor = color * texel + specular;

24
Shaders/planet.frag
View file

@ -16,7 +16,7 @@ uniform sampler2D texture;
uniform sampler2D shadowtex;
uniform sampler2D grain_texture;
float Noise2D(in vec2 coord, in float wavelength);
float luminance(vec3 color)
{
@ -56,7 +56,11 @@ void main()
texel = texture2D(texture, gl_TexCoord[0].st);
grainTexel = texture2D(grain_texture, gl_TexCoord[0].st * 40.0);
float noise = Noise2D( gl_TexCoord[0].st, 0.00005);
noise += Noise2D( gl_TexCoord[0].st, 0.0002);
noise += Noise2D( gl_TexCoord[0].st, 0.0001);
noise= noise/3.0;
vec3 light_specular = vec3 (1.0, 1.0, 1.0);
@ -74,7 +78,17 @@ void main()
float oceanness = smoothstep(0.0, 0.1,length(texel.rgb - vec3 (0.007,0.019, 0.078)));
float specular_enhancement = 4.0 * (1.0 - oceanness);
if (use_overlay) {texel.rgb = mix(texel.rgb, grainTexel.rgb, 0.4* grainTexel.a * oceanness);}
if (use_overlay) {
//texel.rgb = mix(texel.rgb, grainTexel.rgb, 0.4* grainTexel.a * oceanness);
texel.rgb = texel.rgb * (0.85 + 0.3 * noise);
texel.r = smoothstep(0.0, 0.95, texel.r);
texel.g = smoothstep(0.0, 0.95, texel.g);
texel.b = smoothstep(0.0, 0.95, texel.b);
float intensity = length(texel.rgb);
texel.rgb = mix(texel.rgb, intensity * vec3 (1.0,1.0,1.0), 0.3);
}
//texel.rgb = vec3 (0.5,0.5,0.5);
if (NdotL > 0.0) {
color += diffuse_term * NdotL * (1.0-shadowTexel.a);
@ -95,13 +109,15 @@ void main()
//fragColor = mix(fragColor, shadowTexel, shadowTexel.a);
float angle = dot(normalize(ecViewDir), normalize(normal));
float distance_through_atmosphere = 10.0 / ((angle)+0.001);
float distance_through_atmosphere = min(10.0 / (abs(angle)+0.001),500.0);
vec4 fogColor = vec4 (0.83,0.9,1.0,1.0) * clamp(length(diffuse_term.rgb/1.73 * clamp(NdotL,0.01, 0.99)),0.0,1.0);
//float visibility = 80.0;
float fogFactor = exp(-distance_through_atmosphere/(visibility/1000.0));
fragColor = mix(fogColor, fragColor, fogFactor);
gl_FragColor = fragColor;
}