diff options
Diffstat (limited to 'progs/glsl/CH11-bumpmap.frag.txt')
-rw-r--r-- | progs/glsl/CH11-bumpmap.frag.txt | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/progs/glsl/CH11-bumpmap.frag.txt b/progs/glsl/CH11-bumpmap.frag.txt deleted file mode 100644 index 063576f5a3..0000000000 --- a/progs/glsl/CH11-bumpmap.frag.txt +++ /dev/null @@ -1,41 +0,0 @@ -// -// Fragment shader for procedural bumps -// -// Authors: John Kessenich, Randi Rost -// -// Copyright (c) 2002-2006 3Dlabs Inc. Ltd. -// -// See 3Dlabs-License.txt for license information -// - -varying vec3 LightDir; -varying vec3 EyeDir; - -uniform vec3 SurfaceColor; // = (0.7, 0.6, 0.18) -uniform float BumpDensity; // = 16.0 -uniform float BumpSize; // = 0.15 -uniform float SpecularFactor; // = 0.5 - -void main() -{ - vec3 litColor; - vec2 c = BumpDensity * gl_TexCoord[0].st; - vec2 p = fract(c) - vec2(0.5); - - float d, f; - d = p.x * p.x + p.y * p.y; - f = 1.0 / sqrt(d + 1.0); - - if (d >= BumpSize) - { p = vec2(0.0); f = 1.0; } - - vec3 normDelta = vec3(p.x, p.y, 1.0) * f; - litColor = SurfaceColor * max(dot(normDelta, LightDir), 0.0); - vec3 reflectDir = reflect(LightDir, normDelta); - - float spec = max(dot(EyeDir, reflectDir), 0.0); - spec *= SpecularFactor; - litColor = min(litColor + spec, vec3(1.0)); - - gl_FragColor = vec4(litColor, 1.0); -} |