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Added relief code to new effects and shaders

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This commit is contained in:
gral@who.net 2010-08-24 14:53:42 +02:00
parent 0ff2d597f5
commit 8e645e61f5
5 changed files with 250 additions and 17 deletions
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48
Effects/forest.eff
View file

@ -23,8 +23,22 @@
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="5">
<image>Textures.high/Terrain/forest-relief.png</image>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<snow-level><use>/sim/rendering/snow-level-m</use></snow-level>
<depth-factor type="float">0.01</depth-factor>
<canopy-height type="float">15.0</canopy-height>
<quality-level><use>/sim/rendering/quality-level</use></quality-level>
</parameters>
<generate>
<tangent type="int">6</tangent>
<binormal type="int">7</binormal>
</generate>
<technique n="9">
<predicate>
<and>
@ -97,10 +111,27 @@
<use>texture[4]/internal-format</use>
</internal-format>
</texture-unit>
<texture-unit>
<unit>5</unit>
<image><use>texture[5]/image</use></image>
<filter><use>texture[5]/filter</use></filter>
<wrap-s><use>texture[5]/wrap-s</use></wrap-s>
<wrap-t><use>texture[5]/wrap-t</use></wrap-t>
<internal-format>
<use>texture[5]/internal-format</use>
</internal-format>
</texture-unit>
<program>
<vertex-shader>Shaders/forest.vert</vertex-shader>
<fragment-shader>Shaders/forest.frag</fragment-shader>
<attribute>
<name>tangent</name>
<index>6</index>
</attribute>
<attribute>
<name>binormal</name>
<index>7</index>
</attribute>
</program>
<uniform>
<name>NoiseTex</name>
@ -122,11 +153,26 @@
<type>sampler-1d</type>
<value type="int">3</value>
</uniform>
<uniform>
<name>NormalTex</name>
<type>sampler-2d</type>
<value type="int">5</value>
</uniform>
<uniform>
<name>depth_factor</name>
<type>float</type>
<value><use>depth-factor</use></value>
</uniform>
<uniform>
<name>snowlevel</name>
<type>float</type>
<value><use>snow-level</use></value>
</uniform>
<uniform>
<name>quality_level</name>
<type>float</type>
<value><use>quality-level</use></value>
</uniform>
</pass>
</technique>
</PropertyList>

48
Effects/glacier.eff
View file

@ -23,8 +23,22 @@
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="5">
<image>Textures.high/Terrain/forest-relief.png</image>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<snow-level><use>/sim/rendering/snow-level-m</use></snow-level>
<depth-factor type="float">0.01</depth-factor>
<canopy-height type="float">15.0</canopy-height>
<quality-level><use>/sim/rendering/quality-level</use></quality-level>
</parameters>
<generate>
<tangent type="int">6</tangent>
<binormal type="int">7</binormal>
</generate>
<technique n="9">
<predicate>
<and>
@ -97,10 +111,27 @@
<use>texture[4]/internal-format</use>
</internal-format>
</texture-unit>
<texture-unit>
<unit>5</unit>
<image><use>texture[5]/image</use></image>
<filter><use>texture[5]/filter</use></filter>
<wrap-s><use>texture[5]/wrap-s</use></wrap-s>
<wrap-t><use>texture[5]/wrap-t</use></wrap-t>
<internal-format>
<use>texture[5]/internal-format</use>
</internal-format>
</texture-unit>
<program>
<vertex-shader>Shaders/forest.vert</vertex-shader>
<fragment-shader>Shaders/forest.frag</fragment-shader>
<attribute>
<name>tangent</name>
<index>6</index>
</attribute>
<attribute>
<name>binormal</name>
<index>7</index>
</attribute>
</program>
<uniform>
<name>NoiseTex</name>
@ -122,11 +153,26 @@
<type>sampler-1d</type>
<value type="int">3</value>
</uniform>
<uniform>
<name>NormalTex</name>
<type>sampler-2d</type>
<value type="int">5</value>
</uniform>
<uniform>
<name>depth_factor</name>
<type>float</type>
<value><use>depth-factor</use></value>
</uniform>
<uniform>
<name>snowlevel</name>
<type>float</type>
<value><use>snow-level</use></value>
</uniform>
<uniform>
<name>quality_level</name>
<type>float</type>
<value><use>quality-level</use></value>
</uniform>
</pass>
</technique>
</PropertyList>

48
Effects/herbtundra.eff
View file

@ -23,8 +23,22 @@
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<texture n="5">
<image>Textures.high/Terrain/forest-relief.png</image>
<filter>linear-mipmap-linear</filter>
<wrap-s>repeat</wrap-s>
<wrap-t>repeat</wrap-t>
<internal-format>normalized</internal-format>
</texture>
<snow-level><use>/sim/rendering/snow-level-m</use></snow-level>
<depth-factor type="float">0.01</depth-factor>
<canopy-height type="float">15.0</canopy-height>
<quality-level><use>/sim/rendering/quality-level</use></quality-level>
</parameters>
<generate>
<tangent type="int">6</tangent>
<binormal type="int">7</binormal>
</generate>
<technique n="9">
<predicate>
<and>
@ -97,10 +111,27 @@
<use>texture[4]/internal-format</use>
</internal-format>
</texture-unit>
<texture-unit>
<unit>5</unit>
<image><use>texture[5]/image</use></image>
<filter><use>texture[5]/filter</use></filter>
<wrap-s><use>texture[5]/wrap-s</use></wrap-s>
<wrap-t><use>texture[5]/wrap-t</use></wrap-t>
<internal-format>
<use>texture[5]/internal-format</use>
</internal-format>
</texture-unit>
<program>
<vertex-shader>Shaders/forest.vert</vertex-shader>
<fragment-shader>Shaders/forest.frag</fragment-shader>
<attribute>
<name>tangent</name>
<index>6</index>
</attribute>
<attribute>
<name>binormal</name>
<index>7</index>
</attribute>
</program>
<uniform>
<name>NoiseTex</name>
@ -122,11 +153,26 @@
<type>sampler-1d</type>
<value type="int">3</value>
</uniform>
<uniform>
<name>NormalTex</name>
<type>sampler-2d</type>
<value type="int">5</value>
</uniform>
<uniform>
<name>depth_factor</name>
<type>float</type>
<value><use>depth-factor</use></value>
</uniform>
<uniform>
<name>snowlevel</name>
<type>float</type>
<value><use>snow-level</use></value>
</uniform>
<uniform>
<name>quality_level</name>
<type>float</type>
<value><use>quality-level</use></value>
</uniform>
</pass>
</technique>
</PropertyList>

90
Shaders/forest.frag
View file

@ -2,22 +2,89 @@
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VTangent;
varying vec3 VBinormal;
varying vec3 VNormal;
varying vec3 Normal;
varying float bump;
uniform sampler3D NoiseTex;
uniform sampler2D SampleTex;
uniform sampler1D ColorsTex;
uniform sampler2D SampleTex2;
uniform sampler2D NormalTex;
uniform float depth_factor;
uniform float quality_level; // From /sim/rendering/quality-level
uniform float snowlevel; // From /sim/rendering/snow-level-m
const float scale = 1.0;
int linear_search_steps = 10;
float ray_intersect(sampler2D reliefMap, vec2 dp, vec2 ds)
{
float size = 1.0 / float(linear_search_steps);
float depth = 0.0;
float best_depth = 1.0;
for(int i = 0; i < linear_search_steps - 1; ++i)
{
depth += size;
float t = texture2D(reliefMap, dp + ds * depth).a;
if(best_depth > 0.996)
if(depth >= t)
best_depth = depth;
}
depth = best_depth;
const int binary_search_steps = 5;
for(int i = 0; i < binary_search_steps; ++i)
{
size *= 0.5;
float t = texture2D(reliefMap, dp + ds * depth).a;
if(depth >= t)
{
best_depth = depth;
depth -= 2.0 * size;
}
depth += size;
}
return(best_depth);
}
void main (void)
{
if ( quality_level >= 3.5 ) {
linear_search_steps = 20;
}
vec2 uv, dp, ds;
vec3 N;
float d;
if ( bump > 0.9 && quality_level >= 2.0 )
{
vec3 V = normalize(ecPosition.xyz);
float a = dot(VNormal, -V);
vec2 s = vec2(dot(V, VTangent), dot(V, VBinormal));
s *= depth_factor / a;
ds = s;
dp = gl_TexCoord[0].st;
d = ray_intersect(NormalTex, dp, ds);
uv = dp + ds * d;
N = texture2D(NormalTex, uv).xyz * 2.0 - 1.0;
}
else
{
uv = gl_TexCoord[0].st;
N = vec3(0.0, 0.0, 1.0);
}
vec4 basecolor = texture2D(SampleTex, rawpos.xy*0.000144);
vec4 basecolor2 = texture2D(SampleTex2, rawpos.xy*0.000144);
@ -89,13 +156,32 @@ void main (void)
c1 = mix(c1, c5, clamp(0.65, -n, 0.6));
}
N = normalize(N.x * VTangent + N.y * VBinormal + N.z * VNormal);
vec3 l = gl_LightSource[0].position.xyz;
vec3 diffuse = gl_Color.rgb * max(0.0, dot(N, l));
float shadow_factor = 1.0;
vec4 constantColor = vec4(1.0, 1.0, 1.0, 1.0);
// Shadow
if ( quality_level >= 3.0 ) {
dp += ds * d;
vec3 sl = normalize( vec3( dot( l, VTangent ), dot( l, VBinormal ), dot( -l, VNormal ) ) );
ds = sl.xy * depth_factor / sl.z;
dp -= ds * d;
float dl = ray_intersect(NormalTex, dp, ds);
if ( dl < d - 0.05 )
shadow_factor = dot( constantColor.xyz, vec3( 1.0, 1.0, 1.0 ) ) * 0.25;
}
// end shadow
//old 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(0.4, dot(VNormal, gl_LightSource[0].position.xyz));
vec4 ambient_light = gl_LightSource[0].diffuse * vec4(diffuse, 1.0);
//diffuse = gl_Color.rgb * max(0.4, dot(VNormal, gl_LightSource[0].position.xyz));
vec4 ambient_light = gl_LightSource[0].diffuse * shadow_factor * vec4(diffuse, 1.0);
c1 *= ambient_light;
vec4 finalColor = c1;

21
Shaders/forest.vert
View file

@ -1,19 +1,28 @@
#version 120
varying vec4 rawpos;
varying vec4 ecPosition;
varying vec3 VNormal;
varying vec3 VTangent;
varying vec3 VBinormal;
varying vec3 Normal;
varying vec4 constantColor;
varying float bump;
attribute vec3 tangent;
attribute vec3 binormal;
void main(void)
{
gl_TexCoord[0] = gl_MultiTexCoord0;
rawpos = gl_Vertex;
ecPosition = gl_ModelViewMatrix * gl_Vertex;
VNormal = normalize(gl_NormalMatrix * gl_Normal);
ecPosition = gl_ModelViewMatrix * rawpos;
Normal = normalize(gl_Normal);
VNormal = gl_NormalMatrix * gl_Normal;
VTangent = gl_NormalMatrix * tangent;
VBinormal = gl_NormalMatrix * binormal;
bump = 1.0;
gl_FrontColor = gl_Color;
constantColor = gl_FrontMaterial.emission
+ gl_FrontColor * (gl_LightModel.ambient + gl_LightSource[0].ambient);
gl_Position = ftransform();
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
}