Some water shaders, with per-pixel fresnel and lighting but no reflection and refraction yet.

This was SVN commit r3892.

binaries/data/mods/official/shaders/water_high.fs

@@ -0,0 +1,44 @@
+uniform vec3 ambient;
+uniform vec3 sunDir;
+uniform vec3 sunColor;
+uniform vec3 cameraPos;
+uniform sampler2D normalMap;
+uniform float shininess;
+
+varying vec3 worldPos;
+varying vec3 waterColor;	/* Water colour with LOS multiplied in */
+varying float waterDepth;
+
+void main()
+{
+	vec3 n, l, h, v;		/* normal, vector to light, half-vector and view vector (vector to eye) */
+	float ndotl, ndoth, ndotv;
+	float fresnel;
+	float t;
+	vec3 color;
+	vec3 specular;
+	
+	n = normalize(texture2D(normalMap, gl_TexCoord[0].st).xzy - vec3(0.5, 0.5, 0.5));
+	l = -sunDir;
+	v = normalize(cameraPos - worldPos);
+	h = normalize(l + v);
+	
+	ndotl = dot(n, l);
+	ndoth = dot(n, h);
+	ndotv = dot(n, v);
+	
+	fresnel = pow(1.0 - ndotv, 0.8);	/* A rather arbitrary Fresnel approximation */
+	
+	color = ambient * waterColor;
+	specular = vec3(0.0, 0.0, 0.0);
+	if(ndotl > 0.0)
+	{
+		color += ndotl * sunColor * waterColor;
+		specular = pow(ndoth, shininess) * sunColor * 0.6;		/* Assume specular color is (.6,.6,.6) for now */
+	}
+	
+    gl_FragColor.rgb = color + specular;
+	
+	t = 8.0 * max(0.0, 0.7-v.y);
+	gl_FragColor.a = mix(0.15*waterDepth*(1.2 + t), 0.15*waterDepth*(2.0 + t), fresnel) * fresnel;
+}

binaries/data/mods/official/shaders/water_high.vs

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+attribute float vertexDepth;
+
+varying vec3 worldPos;
+varying vec3 waterColor;	/* Water colour with LOS multiplied in */
+varying float waterDepth;
+
+void main()
+{
+	worldPos = gl_Vertex.xyz;
+	waterColor = gl_Color.xyz;
+	waterDepth = vertexDepth;
+	gl_TexCoord[0] = gl_MultiTexCoord0;
+    gl_Position = ftransform();
+}

binaries/data/mods/official/shaders/water_high.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
+
+<Program>
+	<Shaders>
+		<Shader type="VERTEX_SHADER">shaders/water_high.vs</Shader>
+		<Shader type="FRAGMENT_SHADER">shaders/water_high.fs</Shader>
+	</Shaders>
+</Program>