From 6e559ab4eb578691e9204b5e00f477fccbec75bc Mon Sep 17 00:00:00 2001
From: Frederic Bouvier <fredfgfs01@free.fr>
Date: Sun, 3 Oct 2010 08:57:33 +0200
Subject: [PATCH] Restore old shader for quality level below 2
---
Effects/water.eff | 49 +++++++++++++++++++++++
Shaders/water-orig.frag | 86 +++++++++++++++++++++++++++++++++++++++++
Shaders/water-orig.vert | 15 +++++++
3 files changed, 150 insertions(+)
create mode 100644 Shaders/water-orig.frag
create mode 100644 Shaders/water-orig.vert
diff --git a/Effects/water.eff b/Effects/water.eff
index 48aad5ca7..248950cb6 100644
--- a/Effects/water.eff
+++ b/Effects/water.eff
@@ -146,4 +146,53 @@
</uniform>
</pass>
</technique>
+ <technique n="9">
+ <predicate>
+ <and>
+ <property>/sim/rendering/water-shader</property>
+ <property>/sim/rendering/shader-effects</property>
+ <or>
+ <less-equal>
+ <value type="float">2.0</value>
+ <glversion/>
+ </less-equal>
+ <and>
+ <extension-supported>GL_ARB_shader_objects</extension-supported>
+ <extension-supported>GL_ARB_shading_language_100</extension-supported>
+ <extension-supported>GL_ARB_vertex_shader</extension-supported>
+ <extension-supported>GL_ARB_fragment_shader</extension-supported>
+ </and>
+ </or>
+ </and>
+ </predicate>
+ <pass>
+ <lighting>true</lighting>
+ <material>
+ <ambient><use>material/ambient</use></ambient>
+ <diffuse><use>material/diffuse</use></diffuse>
+ <specular><use>material/specular</use></specular>
+ <color-mode>ambient-and-diffuse</color-mode>
+ </material>
+ <blend><use>transparent</use></blend>
+ <alpha-test><use>transparent</use></alpha-test>
+ <shade-model>smooth</shade-model>
+ <cull-face>back</cull-face>
+ <render-bin>
+ <bin-number><use>render-bin/bin-number</use></bin-number>
+ <bin-name><use>render-bin/bin-name</use></bin-name>
+ </render-bin>
+ <texture-unit>
+ <unit>0</unit>
+ <type>noise</type>
+ </texture-unit>
+ <program>
+ <vertex-shader>Shaders/water-orig.vert</vertex-shader>
+ <fragment-shader>Shaders/water-orig.frag</fragment-shader>
+ </program>
+ <uniform>
+ <name>texture</name>
+ <type>sampler-3d</type>
+ <value type="int">0</value></uniform>
+ </pass>
+ </technique>
</PropertyList>
diff --git a/Shaders/water-orig.frag b/Shaders/water-orig.frag
new file mode 100644
index 000000000..50ae098f8
--- /dev/null
+++ b/Shaders/water-orig.frag
@@ -0,0 +1,86 @@
+#version 120
+
+varying vec4 rawpos;
+varying vec4 ecPosition;
+varying vec3 VNormal;
+varying vec3 Normal;
+varying vec3 lightVec;
+
+uniform sampler3D NoiseTex;
+uniform float osg_SimulationTime;
+
+//const float scale = 1.0;
+
+void main (void)
+{
+ vec4 noisevecS = texture3D(NoiseTex, (rawpos.xyz)*0.0126);
+ vec4 nvLS = texture3D(NoiseTex, (rawpos.xyz)*-0.0003323417);
+
+ vec4 noisevec = texture3D(NoiseTex, (rawpos.xyz)*0.00423+vec3(0.0,0.0,osg_SimulationTime*0.035217));
+ vec4 nvL = texture3D(NoiseTex, (rawpos.xyz)*0.001223417+(0.0,0.0,osg_SimulationTime*-0.0212));
+
+ float fogFactor;
+ if (gl_Fog.density == 1.0)
+ {
+ fogFactor=1.0;
+ }
+ else
+ {
+ float fogCoord = ecPosition.z;
+ const float LOG2 = 1.442695;
+ fogFactor = exp2(-gl_Fog.density * gl_Fog.density * fogCoord * fogCoord * LOG2);
+ fogFactor = clamp(fogFactor, 0.0, 1.0);
+ }
+
+ float a=1.0;
+ float n=0.00;
+ n += nvLS[0]*a;
+ a/=2.0;
+ n += nvLS[1]*a;
+ a/=2.0;
+ n += nvLS[2]*a;
+ a/=2.0;
+ n += nvLS[3]*a;
+
+ a=4.0;
+ float na=n;
+ na += nvL[0]*1.1;
+ a*=1.2;
+ na += nvL[1]*a;
+ a*=1.2;
+ na += nvL[2]*a;
+ a*=1.2;
+ na += nvL[3]*a;
+ a=2.0;
+ na += noisevec[0]*a*0.2;
+ a*=1.2;
+ na += noisevec[1]*a;
+ a*=1.2;
+ na += noisevec[2]*a;
+ a*=1.2;
+ na += noisevec[3]*a;
+
+ vec4 c1;
+ c1 = asin(vec4(smoothstep(0.0, 2.2, n), smoothstep(-0.1, 2.10, n), smoothstep(-0.2, 2.0, n), 1.0));
+
+ vec3 Eye = normalize(-ecPosition.xyz);
+ vec3 Reflected = normalize(reflect(-normalize(lightVec), normalize(VNormal+vec3(0.0,0.0,na*0.10-0.24))));
+
+ vec3 bump = normalize(VNormal+vec3(0.0, 0.0, na)-0.9);
+ vec3 bumped = max(normalize(refract(lightVec, normalize(bump), 0.16)), 0.0);
+
+ vec4 ambientColor = gl_LightSource[0].ambient;
+ vec4 light = ambientColor;
+ c1 *= light;
+
+ float bumpFact = (bumped.r+bumped.g+bumped.b);
+ float ReflectedEye = max(dot(Reflected, Eye), 0.0);
+ float eyeFact = pow(ReflectedEye, 20.0);
+ c1 += 0.3 * gl_LightSource[0].diffuse * (1.0-eyeFact) * bumpFact*bumpFact;
+ c1 += 0.4 * gl_LightSource[0].diffuse * eyeFact * 3*bumpFact;
+ eyeFact = pow(eyeFact, 20.0);
+ c1 += gl_LightSource[0].specular * eyeFact * 4*bumpFact;
+
+ vec4 finalColor = c1;
+ gl_FragColor = mix(gl_Fog.color, finalColor, fogFactor);
+}
diff --git a/Shaders/water-orig.vert b/Shaders/water-orig.vert
new file mode 100644
index 000000000..ca61aa33c
--- /dev/null
+++ b/Shaders/water-orig.vert
@@ -0,0 +1,15 @@
+varying vec4 rawpos;
+varying vec4 ecPosition;
+varying vec3 VNormal;
+varying vec3 Normal;
+varying vec3 lightVec;
+
+void main(void)
+{
+ rawpos = gl_Vertex;
+ ecPosition = gl_ModelViewMatrix * gl_Vertex;
+ VNormal = normalize(gl_NormalMatrix * gl_Normal);
+ Normal = normalize(gl_Normal);
+ lightVec = normalize(gl_LightSource[0].position.xyz/* - ecPosition*/);
+ gl_Position = ftransform();
+}