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Shader Crop: Adding snow and snowlevel adjustement, clean up

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gral@who.net 2010-08-21 16:51:13 +02:00
parent 07c6ffedc0
commit 1ee6d35136
3 changed files with 19 additions and 20 deletions
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6
Effects/crop.eff
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@ -16,6 +16,7 @@
<wrap-s>mirror</wrap-s>
<internal-format>normalized</internal-format>
</texture>
<snow-level><use>/sim/rendering/snow-level-m</use></snow-level>
</parameters>
<technique n="9">
<predicate>
@ -98,6 +99,11 @@
<type>sampler-1d</type>
<value type="int">2</value>
</uniform>
<uniform>
<name>snowlevel</name>
<type>float</type>
<value><use>snow-level</use></value>
</uniform>
</pass>
</technique>
</PropertyList>

13
Shaders/crop.frag
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@ -4,25 +4,20 @@ varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 Normal;
varying vec4 constantColor;
uniform sampler3D NoiseTex;
uniform sampler2D SampleTex;
uniform sampler1D ColorsTex;
const float scale = 1.0;
uniform float snowlevel; // From /sim/rendering/snow-level-m
const vec4 red = vec4(1.0, 0.0, 0.0, 1.0);
const vec4 green = vec4(0.0, 1.0, 0.0, 1.0);
const vec4 blue = vec4(0.0, 0.0, 1.0, 1.0);
const vec4 yellow = vec4(1.0, 1.0, 0.0, 1.0);
const float scale = 1.0;
#define BLA 1
#define BLA2 0
void main (void)
{
const float snowlevel=2000.0;
vec4 basecolor = texture2D(SampleTex, rawpos.xy*0.000144);
basecolor = texture1D(ColorsTex, basecolor.r+0.00);
@ -54,13 +49,15 @@ void main (void)
// good
vec4 c1;
c1 = basecolor * vec4(smoothstep(0.0, 1.15, n), smoothstep(0.0, 1.2, n), smoothstep(0.1, 1.3, n), 1.0);
//"steep = gray"
c1 = mix(vec4(n-0.42, n-0.44, n-0.51, 1.0), c1, smoothstep(0.970, 0.990, abs(normalize(Normal).z)+nvL[2]*1.3));
//"snow"
c1 = mix(c1, clamp(n+nvL[2]*4.1+vec4(0.1, 0.1, nvL[2]*2.2, 1.0), 0.7, 1.0), smoothstep(snowlevel+300.0, snowlevel+360.0, (rawpos.z)+nvL[1]*3000.0));
vec3 diffuse = gl_Color.rgb * max(0.0, dot(VNormal, gl_LightSource[0].position.xyz));
vec4 ambient_light = constantColor + gl_LightSource[0].diffuse * vec4(diffuse, 1.0);
vec4 ambient_light = gl_LightSource[0].diffuse * vec4(diffuse, 1.0);
c1 *= ambient_light;
vec4 finalColor = c1;

20
Shaders/crop.vert
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@ -1,23 +1,19 @@
#version 120
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 Normal;
varying vec4 constantColor;
centroid varying vec4 ipos;
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 Normal;
void main(void)
{
gl_TexCoord[0] = gl_MultiTexCoord0;
rawpos = gl_Vertex;
ipos = gl_Vertex;
rawpos = gl_Vertex;
ecPosition = gl_ModelViewMatrix * gl_Vertex;
VNormal = normalize(gl_NormalMatrix * gl_Normal);
Normal = normalize(gl_Normal);
gl_FrontColor = gl_Color;
constantColor = gl_FrontMaterial.emission
+ gl_Color * (gl_LightModel.ambient + gl_LightSource[0].ambient);
gl_FrontColor = gl_Color;
gl_Position = ftransform();
}
}