[Csp-commits] svn:csp r2025 - trunk/csp/data/shaders

[<sv...@ww...>]

Author: mkrose
Date: 2006-12-08 23:26:24 -0800 (Fri, 08 Dec 2006)
New Revision: 2025

Added:
   trunk/csp/data/shaders/clod.fragment
   trunk/csp/data/shaders/clod.vertex
Log:
Add chunklod vertex and fragment shaders.  Not sure exactly what state
these files and the chunklod shader loader are in; some changes may be
needed to get them to work.

Browse at: https://www.zerobar.net/viewcvs/viewcvs.cgi?view=rev&rev=2025

Added: trunk/csp/data/shaders/clod.fragment
===================================================================
--- trunk/csp/data/shaders/clod.fragment	2006-12-01 12:03:43 UTC (rev 2024)
+++ trunk/csp/data/shaders/clod.fragment	2006-12-09 07:26:24 UTC (rev 2025)
@@ -0,0 +1,20 @@
+// clod fragment shader
+//
+// Copyright 2003-2006 Mark Rose <mk...@us...>
+//
+
+uniform sampler2D tex0;
+varying vec4 normal;
+varying vec4 light;
+varying vec4 eye;
+
+const vec4 fog_color = vec4(0.2, 0.2, 0.4, 1.0);
+
+void main() {
+	const vec4 color = texture2D(tex0, gl_TexCoord[0].st);
+	vec3 r = reflect(normalize(light.xyz), normalize(normal.xyz));
+	float spot = dot(r, normalize(eye.xyz));
+	spot = pow(spot, 20.0);
+	float specular = spot * color.b / dot(color, color);
+	gl_FragColor = mix(color + vec4(1.0, 1.0, 1.0, 1.0) * clamp(specular, 0.0, 1.0), fog_color, gl_FogFragCoord);
+}

Added: trunk/csp/data/shaders/clod.vertex
===================================================================
--- trunk/csp/data/shaders/clod.vertex	2006-12-01 12:03:43 UTC (rev 2024)
+++ trunk/csp/data/shaders/clod.vertex	2006-12-09 07:26:24 UTC (rev 2025)
@@ -0,0 +1,34 @@
+// clod vertex morpher
+// 
+// Copyright 2003-2006 Mark Rose <mk...@us...>
+//
+//
+
+uniform vec3 vertex_scale;
+uniform vec3 vertex_offset;
+
+varying vec4 normal;
+varying vec4 light;
+varying vec4 eye;
+
+void main() {
+	vec4 morph = vec4(0.0, 0.0, 0.0, 1.0);
+	morph.xz = vertex_offset.xz + gl_Vertex.xz * vertex_scale.xz;
+	vec4 vxy_eye = gl_ModelViewMatrix * morph;
+	vec4 range = length(vxy_eye);
+	morph.y = (gl_Vertex.y + gl_Vertex.w * vertex_offset.y) * vertex_scale.y - range * range / 12740000.0;
+	gl_Position = gl_ModelViewProjectionMatrix * morph;
+
+	vec4 t0 = vec4(0.0, 0.0, 1.0, 1.0);
+	t0.s = dot(morph, gl_ObjectPlaneS[0]);
+	t0.t = dot(morph, gl_ObjectPlaneT[0]);
+	gl_TexCoord[0] = gl_TextureMatrix[0] * t0;
+
+	normal = gl_ModelViewMatrix * vec4(0.0, 1.0, 0.0, 0.0);
+	eye = gl_ModelViewMatrix * morph;
+	light = -gl_LightSource[0].position;
+
+	gl_FrontColor = vec4(1.0, 1.0, 1.0, 1.0);
+	gl_FogFragCoord = 1.0 - exp(-length(eye) * 0.000002);
+}
+