/**************************************************************
	Attempting to get Parallax Bumpmapping to work.
	10/16/04: I think right now only Bumpmapping
		  is actually happening
**************************************************************/


/*************************************************************
	Make noFog == True, or add fog vertex code
    	to allow material to show on model.
	
	For this testing I used a flat terrain.
**************************************************************/


function parabump_init{

mat_inverse(mtl.matrix, matworld);

bmap_to_mipmap(mtl.skin1);
bmap_to_mipmap(mtl.skin2);
bmap_to_mipmap(mtl.skin3);
}




bmap tex0 = <rockwall_CM.tga>;  //RGB Colormap 
bmap tex1 = <rockwall_NM.tga>;  //RGB Normalmap
bmap tex2 = <rockwall_HM.tga>;  //RGB Heightmap



material parabump_fx {
flags=tangent;
Skin1=tex0;
Skin2=tex1;
Skin3=tex2;
event = parabump_init;


effect="


// VertexShader ------------------

float4x4 matWorldViewProj;
float4x4 matWorld;
float4 vecSunDir;// light_position = (50, 500, 100, 0); // just used these settings for testing
float4 vecViewPos;
float4x4 matMtl;

texture mtlSkin1;
texture mtlSkin2;
texture mtlSkin3;

sampler base_map = sampler_state
{
texture = (mtlSkin1);
};

sampler bump_map = sampler_state
{
texture = (mtlSkin2);
};

sampler height_map = sampler_state
{
texture = (mtlSkin3);
};

struct VS_INPUT_STRUCT
{
float4 position : POSITION;
float3 normal : NORMAL;
float3 texcoord0 : TEXCOORD0;
float3 tangent : TEXCOORD2;
};

struct VS_OUTPUT_STRUCT
{
float4 position : POSITION;
float2 bump_map : TEXCOORD0;
float3 tangentlight : TEXCOORD1;
float3 half_angle : TEXCOORD2;
float3 tangenteye : TEXCOORD3;
};

VS_OUTPUT_STRUCT mainVS( VS_INPUT_STRUCT vsInStruct )
{
VS_OUTPUT_STRUCT vsOutStruct;
vsOutStruct.position = mul( vsInStruct.position, matWorldViewProj );

float3 position = mul(   matWorld, vsInStruct.position );

vsOutStruct.bump_map = vsInStruct.texcoord0;

float3x3 tangentspace_matrix = float3x3(  vsInStruct.tangent,cross( vsInStruct.tangent,vsInStruct.normal 

),vsInStruct.normal);
float3 objectspace_light_vector = mul( matMtl, -vecSunDir ) - vsInStruct.position;

vsOutStruct.tangentlight = mul(  tangentspace_matrix,objectspace_light_vector );

float3 objectspace_view_vector = mul( matMtl, vecViewPos ) - vsInStruct.position;

vsOutStruct.tangenteye = mul( tangentspace_matrix, objectspace_view_vector );
vsOutStruct.half_angle = vsOutStruct.tangentlight + vsOutStruct.tangenteye;

return vsOutStruct;
};

// PixelShader -------------------

float bumpiness = 0.5;
float parallax = 5.5;
float specular_power = 0.5;
float4 vecAmbient;
float4 vecDiffuse;
float4 vecSpecular;
float vecViewDir;
struct PS_INPUT_STRUCT
{
float2 bump_map : TEXCOORD0;
float3 tangentlight : TEXCOORD1;
float3 half_angle : TEXCOORD2;
float3 tangenteye : TEXCOORD3;
};

struct PS_OUTPUT_STRUCT
{
float4 color0 : COLOR0;
};

float2 ParallaxTexCoord( float2 oldcoord, sampler height_map, float3 eye_vec, float parallax_amount )
{
return (tex2D( height_map, oldcoord )
* parallax_amount + parallax_amount * 0.5)
* (0.0,0.0,0.0) + oldcoord
;
};

PS_OUTPUT_STRUCT mainPS( PS_INPUT_STRUCT psInStruct )
{
PS_OUTPUT_STRUCT psOutStruct;
float3 eye_vec = normalize( psInStruct.tangenteye );
float2 modified_texcoord = ParallaxTexCoord( psInStruct.bump_map, height_map, eye_vec, parallax );
float3 base = tex2D( base_map, modified_texcoord );
float3 bump = tex2D( bump_map, modified_texcoord );
float3 normalized_light_vector = normalize( psInStruct.tangentlight );
float3 normalized_half_angle = normalize( psInStruct.half_angle );
float3 smooth = float3( 0.5, 0.5, 1 );
bump = lerp( smooth, bump, bumpiness );
bump = normalize( ( bump * 2.0f ) - 1.0f );
float3 n_dot_l = dot( bump, normalized_light_vector );
float3 n_dot_h = dot( bump, normalized_half_angle );
psOutStruct.color0.rgb = (
vecAmbient +
vecDiffuse * max( 0, n_dot_l ) +
vecSpecular * pow( max ( 0, n_dot_h ), specular_power )
) * base;
psOutStruct.color0.a = 1.0f;

return psOutStruct;

};

technique Parallax
{
pass P0
{ 

VertexShader = compile vs_2_0 mainVS();
PixelShader = compile ps_2_0 mainPS();
}
}
";
}

action parabump{

my.material = parabump_fx;

}
  

Quote:

---

... yeah, i'm sure this stuff can get a lil aggravating (frustrating) at times.

yeah, take a break man.

this stuff IS rocket science


hey, i appreciate you posting the stuff and showing the rest of us (me) what you've accomplished.

--Mike

---

Thanks!

Pappenheimer: It my come down to that (posting the other code), but I have a few more ideas to try first before I take the "garbage" that litters my FX file out. Right now it may be more confusing than anything. Good suggestion, however.

Here is what I am fighting on this one (my version). If you look at the texture it is looking like this...