From 393b5cd1dc438872af89d334ef6e5fcc59f27d47 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Sun, 13 Jan 2013 17:24:39 +1000
Subject: Added Irrlicht 1.8, but without all the Windows binaries.

---
 libraries/irrlicht-1.8/media/opengl.vsh | 60 +++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 libraries/irrlicht-1.8/media/opengl.vsh

(limited to 'libraries/irrlicht-1.8/media/opengl.vsh')

diff --git a/libraries/irrlicht-1.8/media/opengl.vsh b/libraries/irrlicht-1.8/media/opengl.vsh
new file mode 100644
index 0000000..9cd71bf
--- /dev/null
+++ b/libraries/irrlicht-1.8/media/opengl.vsh
@@ -0,0 +1,60 @@
+!!ARBvp1.0
+# part of the Irrlicht Engine Shader example.
+# Please note that these example shaders don't do anything really useful. 
+# They only demonstrate that shaders can be used in Irrlicht.
+
+#input
+ATTRIB InPos = vertex.position;
+ATTRIB InColor = vertex.color;
+ATTRIB InNormal = vertex.normal;
+ATTRIB InTexCoord = vertex.texcoord;
+
+#output
+OUTPUT OutPos = result.position;
+OUTPUT OutColor = result.color;
+OUTPUT OutTexCoord = result.texcoord;
+
+PARAM MVP[4] = { state.matrix.mvp }; # modelViewProjection matrix.
+TEMP Temp;
+TEMP TempColor;
+TEMP TempNormal;
+TEMP TempPos;
+
+#transform position to clip space 
+DP4 Temp.x, MVP[0], InPos;
+DP4 Temp.y, MVP[1], InPos;
+DP4 Temp.z, MVP[2], InPos;
+DP4 Temp.w, MVP[3], InPos;
+
+#transform normal
+DP3 TempNormal.x, InNormal.x, program.local[0];
+DP3 TempNormal.y, InNormal.y, program.local[1]; 
+DP3 TempNormal.z, InNormal.z, program.local[2];
+
+#renormalize normal
+DP3 TempNormal.w, TempNormal, TempNormal;  
+RSQ TempNormal.w, TempNormal.w;    
+MUL TempNormal, TempNormal, TempNormal.w;
+
+# calculate light vector 
+DP4 TempPos.x, InPos, program.local[10];   # vertex into world position
+DP4 TempPos.y, InPos, program.local[11];
+DP4 TempPos.z, InPos, program.local[12];
+DP4 TempPos.w, InPos, program.local[13];
+
+ADD TempPos, program.local[8], -TempPos;    # vtxpos - lightpos
+
+# normalize light vector
+DP3 TempPos.w, TempPos, TempPos;  
+RSQ TempPos.w, TempPos.w;    
+MUL TempPos, TempPos, TempPos.w;
+
+# calculate light color
+DP3 TempColor, TempNormal, TempPos;    # dp3 with negative light vector 
+LIT OutColor, TempColor;  # clamp to zero if r3 < 0, r5 has diffuce component in r5.y
+MUL OutColor, TempColor.y, program.local[9]; # ouput diffuse color 
+MOV OutColor.w, 1.0;          # we want alpha to be always 1
+MOV OutTexCoord, InTexCoord; # store texture coordinate
+MOV OutPos, Temp;
+
+END
\ No newline at end of file
-- 
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