mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-27 09:15:29 +00:00
35 lines
1 KiB
GLSL
35 lines
1 KiB
GLSL
// Copyright (c) 2008 the OpenTK Team. See license.txt for legal bla
|
|
|
|
// custom vertex attribute
|
|
attribute vec3 AttributeTangent;
|
|
|
|
// world uniforms
|
|
uniform vec3 Light_Position;
|
|
uniform vec3 Camera_Position;
|
|
|
|
// MUST be written to for FS
|
|
varying vec3 VaryingLightVector;
|
|
varying vec3 VaryingEyeVector;
|
|
|
|
void main()
|
|
{
|
|
gl_Position = ftransform();
|
|
gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
|
|
|
|
vec3 nor = normalize( gl_NormalMatrix * gl_Normal );
|
|
vec3 tan = normalize( gl_NormalMatrix * AttributeTangent );
|
|
vec3 bi = cross(nor, tan);
|
|
|
|
// need positions in tangent space
|
|
vec3 vertex = vec3( gl_ModelViewMatrix * gl_Vertex );
|
|
|
|
vec3 temp = Light_Position - vertex;
|
|
VaryingLightVector.x = dot(temp, tan); // optimization, calculate dot products rather than building TBN matrix
|
|
VaryingLightVector.y = dot(temp, bi);
|
|
VaryingLightVector.z = dot(temp, nor);
|
|
|
|
temp = Camera_Position - vertex;
|
|
VaryingEyeVector.x = dot(temp, tan);
|
|
VaryingEyeVector.y = dot(temp, bi);
|
|
VaryingEyeVector.z = dot(temp, nor);
|
|
} |