From 7028cbe09c688437910a25623098762bf0fa592d Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Mon, 28 Mar 2016 22:28:34 +1000
Subject: Move Irrlicht to src/others.

---
 src/others/irrlicht-1.8.1/media/d3d8.vsh | 37 ++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 src/others/irrlicht-1.8.1/media/d3d8.vsh

(limited to 'src/others/irrlicht-1.8.1/media/d3d8.vsh')

diff --git a/src/others/irrlicht-1.8.1/media/d3d8.vsh b/src/others/irrlicht-1.8.1/media/d3d8.vsh
new file mode 100644
index 0000000..e0c24f7
--- /dev/null
+++ b/src/others/irrlicht-1.8.1/media/d3d8.vsh
@@ -0,0 +1,37 @@
+; part of the Irrlicht Engine Shader example.
+; This Direct3D9 vertex shader will be loaded by the engine.
+; Please note that these example shaders don't do anything really useful. 
+; They only demonstrate that shaders can be used in Irrlicht.
+
+vs.1.1
+
+; transpose and transform position to clip space 
+mul r0, v0.x, c4      
+mad r0, v0.y, c5, r0   
+mad r0, v0.z, c6, r0   
+add oPos, c7, r0       
+
+; transform normal 
+dp3 r1.x, v1, c0  
+dp3 r1.y, v1, c1  
+dp3 r1.z, v1, c2  
+
+; renormalize normal 
+dp3 r1.w, r1, r1  
+rsq r1.w, r1.w    
+mul r1, r1, r1.w  
+
+; calculate light vector 
+m4x4 r6, v0, c10      ; vertex into world position
+add r2, c8, -r6       ; vtxpos - lightpos
+
+; normalize light vector 
+dp3 r2.w, r2, r2  
+rsq r2.w, r2.w    
+mul r2, r2, r2.w  
+
+; calculate light color 
+dp3 r3, r1, r2       ; dp3 with negative light vector 
+lit r5, r3           ; clamp to zero if r3 < 0, r5 has diffuce component in r5.y
+mul oD0, r5.y, c9    ; ouput diffuse color 
+mov oT0, v3          ; store texture coordinates
-- 
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