44 lines
1.0 KiB
Plaintext
44 lines
1.0 KiB
Plaintext
// 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
|
|
//
|
|
|
|
///////////////////////////////////////////////////////
|
|
/// DIFFUSE LIGHTING VERTEX PROGRAM ////////////
|
|
///////////////////////////////////////////////////////
|
|
|
|
vec4 position = gl_Vertex;
|
|
vec3 normal = gl_Normal;
|
|
vec2 uv = gl_MultiTexCoord0.xy;
|
|
vec4 tangent = gl_MultiTexCoord1;
|
|
|
|
out vec4 vLightColor;
|
|
out vec2 vUv;
|
|
out vec3 vLightDir;
|
|
|
|
uniform mat4 worldViewProj;
|
|
uniform vec3 LightPos;
|
|
uniform vec4 LightColor;
|
|
uniform vec3 LightDirMul;
|
|
|
|
void main()
|
|
{
|
|
gl_Position = (worldViewProj * position);
|
|
|
|
vUv = uv;
|
|
|
|
vec3 lightDir = LightPos - position.xyz;
|
|
vLightDir = lightDir * LightDirMul;
|
|
|
|
//Calculate rotation for light to get it to tangent space.
|
|
vec3 binormal = cross(normal,tangent.xyz)*tangent.w;
|
|
mat3 rotation = transpose(mat3(tangent.xyz, binormal, normal));
|
|
|
|
//Transform the lightdir
|
|
vLightDir = (rotation * vLightDir);
|
|
|
|
vLightColor = clamp(LightColor, vec4(0.0), vec4(1.0));
|
|
}
|