dash.graphics.shaders.glsl.ambientlight source code

1 /**
2 * Lighting Pass shader for ambient lights
3 */
4 module dash.graphics.shaders.glsl.ambientlight;
5 import dash.graphics.shaders.glsl;
6 
7 package:
8 
9 /// Takes in a clip-space quad and interpolates the UVs
10 immutable string ambientlightVS = glslVersion ~ q{
11     layout(location = 0) in vec3 vPosition_s;
12     layout(location = 1) in vec2 vUV;
13     
14     out vec4 fPosition_s;
15     out vec2 fUV;
16     
17     void main( void )
18     {
19         fPosition_s = vec4( vPosition_s, 1.0f );
20         gl_Position = fPosition_s;
21         fUV = vUV;
22     }
23 };
24 
25 /// Outputs the color for the diffuse * the ambient light value
26 immutable string ambientlightFS = glslVersion ~ q{
27     struct AmbientLight
28     {
29         vec3 color;
30     };
31 
32     in vec4 fPosition;
33     in vec2 fUV;
34     
35     // this diffuse should be set to the geometry output
36     uniform sampler2D diffuseTexture;
37     uniform AmbientLight light;
38     
39     // https://stackoverflow.com/questions/9222217/how-does-the-fragment-shader-know-what-variable-to-use-for-the-color-of-a-pixel
40     out vec4 color;
41     
42     void main( void )
43     {
44         color = vec4( light.color * texture( diffuseTexture, fUV ).xyz, 1.0f );
45     }
46 };