Extreme version
Replace minimum_vert.glsl in shaders
#version 120
// Varying.
varying vec3 worldNormal;
varying vec3 worldPos;
// Misc uniforms.
uniform vec3 camPos;
uniform mat4 obj2World;
uniform mat4 world2Cam;
// Surface calculations, including specular power.
varying vec2 texCoord;
vec4 viewDelta;
// Fogging.
uniform vec4 fogBaseColor;
uniform vec4 fogConsts;
uniform sampler2D fogTex;
varying vec2 fogCoords;
void main()
{
// Bricks always in world space.
worldPos = (obj2World * vec4(gl_Vertex.xyz, 1.0f)).xyz;
worldNormal = ((obj2World * vec4(gl_Normal.xyz, 0.0f)).xyz);
if(length(gl_Normal.xyz) < 1.1f)
worldNormal.xyz = normalize(worldNormal.xyz);
// Do some camera delta math.
viewDelta.xyz = worldPos - camPos;
viewDelta.w = length(viewDelta.xyz);
viewDelta.xyz = -normalize(viewDelta.xyz);
// Fog can be done per-vertex.
fogCoords.x = clamp((fogConsts.y - viewDelta.w) * fogConsts.x, 0.0f, 1.0f);
fogCoords.y = clamp((worldPos.z - fogConsts.z) * fogConsts.w, 0.0f, 1.0f);
// Project the brick pos and normal.
gl_Position = gl_ProjectionMatrix * world2Cam * vec4(worldPos, 1.0f);
gl_Position.xyz = vec3(gl_Position.x + sin(gl_Position.z), gl_Position.y + sin(gl_Position.z), gl_Position.z);
// Pass color through.
gl_FrontColor = gl_Color;
// Pass texcoords through.
texCoord = gl_MultiTexCoord0.st;
}
