36 lines
774 B
GLSL
36 lines
774 B
GLSL
|
#version 330
|
||
|
|
// Color input from Vertex shader
|
||
|
|
in vec4 vColor;
|
||
|
|
in vec3 vNormal;
|
||
|
|
in vec3 vPosition;
|
||
|
|
|
||
|
|
// Final fragment color
|
||
|
|
out vec4 fColor;
|
||
|
|
|
||
|
|
// Light color RGB value
|
||
|
|
uniform vec3 uLightColor;
|
||
|
|
// Light object position vector
|
||
|
|
uniform vec3 uLightPosition;
|
||
|
|
|
||
|
|
// Strength ranges 0.0f - 1.0f
|
||
|
|
uniform float uAmbientStrength; // 0.2f
|
||
|
|
|
||
|
|
void main()
|
||
|
|
{
|
||
|
|
// Ambient lighting
|
||
|
|
vec3 ambient = uAmbientStrength * uLightColor;
|
||
|
|
|
||
|
|
// Diffuse lighting
|
||
|
|
vec3 norm = normalize(vNormal);
|
||
|
|
vec3 lightDir = normalize(uLightPosition - vPosition);
|
||
|
|
float diff = max(dot(norm, lightDir), 0.0f);
|
||
|
|
|
||
|
|
vec3 diffuse = diff * uLightColor;
|
||
|
|
|
||
|
|
// Strip vColor to vec3 to drop alpha
|
||
|
|
vec3 result = (ambient + diffuse) * vec3(vColor);
|
||
|
|
|
||
|
|
// Final output
|
||
|
|
fColor = vec4(result, 1.0f); // Reapply alpha
|
||
|
|
}
|