Initial commit

engines/hpl1/engine/impl/shaders/hpl1_Water_Fog.vertex

@@ -0,0 +1,39 @@
+// Copyright 2006-2010 (C) - Frictional Games
+//
+// This file is part of HPL1 Engine
+//
+// For conditions of distribution and use, see copyright notice in LICENSE-shaders
+//
+
+///////////////////////////////////////////////////////
+/// WATER FOG VERTEX PROGRAM ////////////
+///////////////////////////////////////////////////////
+
+vec4 position = gl_Vertex;
+vec4 color = gl_Color;
+vec2 uv = gl_MultiTexCoord0.xy;
+
+out vec4 vColor;
+out vec2 vUv;
+out float vFogUv;
+
+uniform mat4 worldViewProj;
+uniform float fogStart;
+uniform float fogEnd;
+uniform float timeCount;
+
+void main()
+{
+	float amp = 0.04;
+	float freq = 15.0;
+	float speed = 3.0;
+
+	gl_Position = (worldViewProj * position);
+	gl_Position.y += sin(timeCount*speed + (position.x)*freq)*amp;
+	gl_Position.y += sin(timeCount*speed + (position.z)*freq)*amp;
+
+	vUv = uv;
+	vFogUv = (fogEnd - gl_Position.z)/(fogEnd - fogStart);
+
+	vColor = clamp(color, vec4(0.0), vec4(1.0));
+}