65 lines
1.7 KiB
GLSL
65 lines
1.7 KiB
GLSL
/*
|
|
* Copyright (C) 2014 Miguel Angel Astor Romero
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
// Model-view matrix.
|
|
uniform mat4 u_projTrans;
|
|
|
|
// Light source position
|
|
uniform vec4 u_lightPos;
|
|
|
|
// Diffuse light color.
|
|
uniform vec4 u_lightDiffuse;
|
|
|
|
// Camera world space position.
|
|
uniform vec3 u_cameraPos;
|
|
|
|
// Vertex position in world coordinates.
|
|
attribute vec4 a_position;
|
|
|
|
// Vertex normal.
|
|
attribute vec4 a_normal;
|
|
|
|
// Vertex color.
|
|
attribute vec4 a_color;
|
|
|
|
// Vertex color to pass to the fragment shader.
|
|
varying vec4 v_color;
|
|
|
|
// Diffuse shaded color to pass to the fragment shader.
|
|
varying vec4 v_diffuse;
|
|
|
|
// The vector from the vertex to the light source.
|
|
varying vec3 v_lightVector;
|
|
|
|
// The vector from the vertex to the camera.
|
|
varying vec3 v_eyeVector;
|
|
|
|
// The light vector reflected around the vertex normal.
|
|
varying vec3 v_reflectedVector;
|
|
|
|
void main(){
|
|
// Set the varyings.
|
|
v_lightVector = normalize(u_lightPos.xyz - a_position.xyz);
|
|
v_eyeVector = normalize(u_cameraPos.xyz - a_position.xyz);
|
|
v_reflectedVector = normalize(-reflect(v_lightVector, a_normal.xyz));
|
|
v_color = a_color;
|
|
|
|
// Diffuse Term.
|
|
v_diffuse = u_lightDiffuse * max(dot(a_normal.xyz, v_lightVector), 0.0);
|
|
|
|
gl_Position = u_projTrans * a_position;
|
|
}
|