Update
http://youtu.be/AYxxhn5hiG0
# CONSTANTS #
LIGHT_COLOR = Vec3(.7,.4,.3)
GLOBAL_AMBIANT = Vec3(.3,.6,.7)
FAR_CLIP = 1000
NEAR_CLIP = 10//Cg
void vshader(float4 vtx_position : POSITION,
out float4 l_position : POSITION,
out float2 l_texcoord : TEXCOORD0,
uniform float4 texpad_originalmap,
uniform float4x4 mat_modelproj)
{
l_position = mul(mat_modelproj, vtx_position);
l_texcoord = (vtx_position.xz * texpad_originalmap.xy) + texpad_originalmap.xy;
}
void fshader(float2 l_texcoord : TEXCOORD0,
uniform sampler2D k_originalmap : TEXUNIT1,
uniform sampler2D k_lineardepth : TEXUNIT2,
out float4 o_color : COLOR)
{
float4 scene = tex2D(k_originalmap, l_texcoord);
float lineardepth = tex2D(k_lineardepth, l_texcoord).x;
float4 color = scene;
float4 gray = 0.30*color.x + 0.59*color.y + 0.11*color.z;
color.r *= scene.r * 1/lineardepth; // nearer objects are warmer in color
color.g = scene.g;
color.b *= scene.b * lineardepth; // further objects are colder in color
color *= gray * lineardepth; // further objects lose saturation
color /= lineardepth; // test
color += lineardepth; // further objects are whiter (should be background color)
o_color = color; // output
}