libgender/vsh.cg

// data from application to vertex program
struct vertexIn {
   float3 Position : POSITION;    // pre-defined registers
   float4 UV :       TEXCOORD0;
   float4 Normal :   NORMAL;
};
// vertex shader to pixel shader
struct vertexOut {
   float4 HPosition :   POSITION;
   float4 TexCoord :    TEXCOORD0;
   float3 LightVec :    TEXCOORD1;
   float3 WorldNormal : TEXCOORD2;
   float3 WorldPos :    TEXCOORD3;
   float3 WorldView :   TEXCOORD4;
};

// vertex shader
vertexOut main(vertexIn IN,      // vertex input from app
      uniform float4x4 WorldViewProj,
      uniform float4x4 WorldProj,
      uniform float3 LightPos
      )
{
   vertexOut OUT; // output of the vertex shader
   OUT.WorldNormal = mul(WorldProj, IN.Normal).xyz;
   // position in object coords:
   float4 Po = float4(IN.Position.x,IN.Position.y, IN.Position.z,1.0);
   float3 Pw = mul(WorldProj, Po).xyz; // pos in world coord


   OUT.WorldPos = Pw;             // pos in world coords
   OUT.LightVec = LightPos - Pw; // light vector
   OUT.TexCoord = IN.UV;          // original tex coords
   // view vector in world coords:
   OUT.WorldView = normalize (WorldViewProj[3].xyz - Pw);
   // pos in clip coords:
   OUT.HPosition = mul(WorldViewProj, Po);
   return OUT;                 // output of vertex shader
}

Revision:	1.2
Committed:	Tue Oct 5 07:09:17 2004 UTC (21 years, 11 months ago) by root
Branch:	MAIN
Changes since 1.1:	+8 -11 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	// data from application to vertex program
2			struct vertexIn {
3			float3 Position : POSITION; // pre-defined registers
4			float4 UV : TEXCOORD0;
5			float4 Normal : NORMAL;
6			};
7			// vertex shader to pixel shader
8			struct vertexOut {
9			float4 HPosition : POSITION;
10			float4 TexCoord : TEXCOORD0;
11			float3 LightVec : TEXCOORD1;
12			float3 WorldNormal : TEXCOORD2;
13			float3 WorldPos : TEXCOORD3;
14			float3 WorldView : TEXCOORD4;
15			};
16
17			// vertex shader
18	root	1.2	vertexOut main(vertexIn IN, // vertex input from app
19			uniform float4x4 WorldViewProj,
20			uniform float4x4 WorldProj,
21			uniform float3 LightPos
22	root	1.1	)
23			{
24			vertexOut OUT; // output of the vertex shader
25	root	1.2	OUT.WorldNormal = mul(WorldProj, IN.Normal).xyz;
26	root	1.1	// position in object coords:
27	root	1.2	float4 Po = float4(IN.Position.x,IN.Position.y, IN.Position.z,1.0);
28			float3 Pw = mul(WorldProj, Po).xyz; // pos in world coord
29	root	1.1
30
31			OUT.WorldPos = Pw; // pos in world coords
32			OUT.LightVec = LightPos - Pw; // light vector
33			OUT.TexCoord = IN.UV; // original tex coords
34			// view vector in world coords:
35	root	1.2	OUT.WorldView = normalize (WorldViewProj[3].xyz - Pw);
36	root	1.1	// pos in clip coords:
37			OUT.HPosition = mul(WorldViewProj, Po);
38			return OUT; // output of vertex shader
39			}
40