diff options
Diffstat (limited to 'data/shaders/lighting.vert')
| -rw-r--r-- | data/shaders/lighting.vert | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/data/shaders/lighting.vert b/data/shaders/lighting.vert index 59d026d..0178530 100644 --- a/data/shaders/lighting.vert +++ b/data/shaders/lighting.vert @@ -21,26 +21,31 @@ varying vec3 light2vc; varying vec3 col_ambi_diff; varying vec3 col_emit; +vec3 v4conv3(vec4 a) { + vec4 div = a/a.w; + return div.xyz; +} + void main() { vec4 vert; vec3 vert_to_light; vert = gl_ModelViewMatrix * gl_Vertex; - pos = vec3(vert); + pos = v4conv3(vert); normal = gl_NormalMatrix * gl_Normal; /* Spotlight - positional light */ - vert_to_light = vec3(gl_LightSource[0].position - vert); + vert_to_light = v4conv3(gl_LightSource[0].position - vert); light0dist = length(vert_to_light); light0vc = normalize(vert_to_light); /* Diffuse "background glow" - this can be normalised only once, here, since 'position' * is really 'direction' and is the same for all vertices. */ - light1vc = normalize(vec3(gl_LightSource[1].position)); + light1vc = normalize(v4conv3(gl_LightSource[1].position)); /* Fill-in light */ - light2vc = normalize(vec3(gl_LightSource[2].position)); + light2vc = normalize(v4conv3(gl_LightSource[2].position)); /* Material properties */ col_ambi_diff = gl_Color.rgb; |