Hi,
I have a question about these shaders. Is there a possibillity to insert the alpha channel from the diffuse map? Maybe for using these shader on tga plants or somthing else. Thanks for help!
best regards
SF
Shader:
for main wdl file.
Code:
STARTER load_fx
{
effect_load(mat_env_bump,"env_bump.fx");
effect_load(mat_spec_bump,"spec_bump.fx");
}
ACTION test_ent1
{
my.material = mat_env_bump;
}
specular bumpmapping
Code:
float bumpiness = { 1.0f }; //Stärke des Bumpmappings
float specular_power = { 128.0f }; //Stärke des Lichts (1 = sehr stark, über 1 schwächer)
float Ka = { 1.0f }; //Gesamthelligkeit
float4 specular = { 1.0f, 0.956737f, 0.670380f, 1.0f }; //Specular Farbe
float4 ambient = { 0.37647f, 0.37647f, 0.24314f, 1.0f }; //Ambient Farbe alt: alles 1.0f
float4 diffuse = { 0.37647f, 0.37647f, 0.24314f, 1.0f }; //Diffuse Farbe alt: 0.839216f, 0.862341f, 0.890411f, 1.0f
float Kd = { 1.0f };
float Ks = { 1.0f };
float4 light_position = { -100.0f, 100.0f, -100.0f, 1.0f };
float4 eye_position = { 0.0f, 0.0f, -10.0f, 1.0f };
float4 vecViewPos;
float4 vecSunDir;
float4 vecAmbient;
float4x4 matWorldViewProj: register(c0);
float4x4 matMtl;
texture entSkin1;
texture entSkin2;
struct VS_INPUT_STRUCT
{
float4 position: POSITION;
float3 normal: NORMAL;
float2 texcoord0: TEXCOORD0;
float3 binormal: TEXCOORD1;
float3 tangent: TEXCOORD2;
};
struct VS_OUTPUT_STRUCT
{
float4 position: POSITION;
float2 bump_map: TEXCOORD0;
float3 light_vector: TEXCOORD1;
float3 half_angle: TEXCOORD2;
};
VS_OUTPUT_STRUCT VS( VS_INPUT_STRUCT vsInStruct )
{
VS_OUTPUT_STRUCT vsOutStruct; //** Declare the output struct
//**-----------------------------------------------------------
//** Calculate the pixel position using the perspective matrix.
//**-----------------------------------------------------------
vsOutStruct.position = mul(vsInStruct.position, matWorldViewProj );
//**----------------------------------------------
//** Pass the bump and base texture coords through
//**----------------------------------------------
vsOutStruct.bump_map = vsInStruct.texcoord0;
//**--------------------------------------------
//** Calculate the light vector in object space,
//** and then transform it into texture space.
//**--------------------------------------------
float3 temp_light_position = mul( vecAmbient, matMtl );
float3 temp_light_vector = temp_light_position - vsInStruct.position;
vsOutStruct.light_vector.x = dot( temp_light_vector, vsInStruct.tangent );
vsOutStruct.light_vector.y = dot( temp_light_vector, vsInStruct.binormal );
vsOutStruct.light_vector.z = dot( temp_light_vector, vsInStruct.normal );
//**-------------------------------------------
//** Calculate the view vector in object space,
//** and then transform it into texture space.
//**-------------------------------------------
float3 temp_eye_position = mul( vecViewPos, matMtl );
float3 temp_view_vector = temp_eye_position - vsInStruct.position;
float3 temp_view_vector2;
temp_view_vector2.x = dot( temp_view_vector, vsInStruct.tangent );
temp_view_vector2.y = dot( temp_view_vector, vsInStruct.binormal );
temp_view_vector2.z = dot( temp_view_vector, vsInStruct.normal );
//**-------------------------
//** Calculate the half angle
//**-------------------------
vsOutStruct.half_angle = vsOutStruct.light_vector + temp_view_vector2;
return vsOutStruct; //** Return the resulting output struct
}
sampler base_map = sampler_state
{
texture=(entSkin1);
MAGFILTER = LINEAR;
MINFILTER = LINEAR;
MIPFILTER = LINEAR;
};
sampler bump_map = sampler_state
{
texture=(entSkin2);
MAGFILTER = LINEAR;
MINFILTER = LINEAR;
MIPFILTER = LINEAR;
};
struct PS_INPUT_STRUCT
{
float2 bump_map: TEXCOORD0;
float3 light_vector: TEXCOORD1;
float3 half_angle: TEXCOORD2;
};
struct PS_OUTPUT_STRUCT
{
float4 color0: COLOR0;
};
//**---------------------------------------------------------
//** Function: main
//** Description: Declare the main entry point for the shader
//** Input: PS_INPUT_STRUCT, derived from the output of
//** the associated vertex shader
//** Returns: PS_OUTPUT_STRUCT
//**---------------------------------------------------------
PS_OUTPUT_STRUCT PS( PS_INPUT_STRUCT psInStruct )
{
PS_OUTPUT_STRUCT psOutStruct; //** Declare the output struct
//**------------------------------------------------------
//** Retreive the base color and bump components from the
//** respective textures, based on the passed bump coords.
//**------------------------------------------------------
float3 base = tex2D( base_map, psInStruct.bump_map );
float3 bump = tex2D( bump_map, psInStruct.bump_map );
//**----------------------------------------------------
//** Normalize the passed vectors from the vertex shader
//**----------------------------------------------------
float3 normalized_light_vector = normalize( psInStruct.light_vector );
float3 normalized_half_angle = normalize( psInStruct.half_angle );
//**--------------------------------------------------------
//** "Smooth out" the bump based on the bumpiness parameter.
//** This is simply a linear interpolation between a "flat"
//** normal and a "bumped" normal. Note that this "flat"
//** normal is based on the texture space coordinate basis.
//**--------------------------------------------------------
float3 smooth = { 0.5f, 0.5f, 1.0f };
bump = lerp( smooth, bump, bumpiness );
bump = normalize( ( bump * 2.0f ) - 1.0f );
//**---------------------------------------------------------
//** These dot products are used for the lighting model
//** equations. The surface normal dotted with the light
//** vector is denoted by n_dot_l. The normal vector
//** dotted with the half angle vector is denoted by n_dot_h.
//**---------------------------------------------------------
float4 n_dot_l = dot( bump, normalized_light_vector );
float4 n_dot_h = dot( bump, normalized_half_angle );
//**--------------------------------------
//** Calculate the resulting pixel color,
//** based on our lighting model.
//** Ambient + Diffuse + Specular
//**--------------------------------------
psOutStruct.color0.rgb =
( base * ambient * Ka ) +
( base * diffuse * Kd * max( 0, n_dot_l ) ) +
( specular * Ks * pow( max( 0, n_dot_h ), specular_power ) );
psOutStruct.color0.a = 1.0f; //** Set the alpha component manually
return psOutStruct; //** Return the resulting output struct
}
technique spec_bump
{
pass Single_Pass
{
VertexShader = compile vs_2_0 VS();
PixelShader = compile ps_2_0 PS();
}
}
environment bumpmapping:
Code:
float Ka = { 0.9f }; //Gesamthelligkeit
float reflectance = { 0.5f }; //Stärke des Environment Mappings
float specular_power = { 64.0f }; //Stärke des Lichts (1 = stark, über 1 = schwächer)
float bumpiness = { 0.8f }; //Stärke des Bump Mappings
float4 ambient = { 1.0f, 1.0f, 1.0f, 1.0f }; //Ambient Farbe
float4 diffuse = { 0.839216f, 0.863241f, 0.890411f, 1.0f }; //Diffuse Farbe
float4 specular = { 1.0f, 0.956737f, 0.670380f, 1.0f}; //Specular Farbe
float Kd = { 1.0f };
float Ks = { 1.0f };
float reflection_clarity = { 3.0f };
texture mtlSkin1;
texture mtlSkin2;
texture entSkin1;
texture entSkin2;
float4x4 matWorldViewProj: register(c0);
float4 vecSunDir: register(c8);
float4 vecViewPos: register(c9);
float4x4 matWorldView: register(c10);
float4x4 matViewInv;
float4x4 matMtl;
float4 vecAmbient;
struct VS_INPUT_STRUCT
{
float4 position: POSITION;
float3 normal: NORMAL;
float2 texcoord0: TEXCOORD0;
float3 binormal: TEXCOORD1;
float3 tangent: TEXCOORD2;
};
struct VS_OUTPUT_STRUCT
{
float4 position: POSITION;
float2 bump_map: TEXCOORD0;
float3 light_vector: TEXCOORD1;
float3 half_angle: TEXCOORD2;
float3 basis1: TEXCOORD3;
float3 basis2: TEXCOORD4;
float3 basis3: TEXCOORD5;
};
//**---------------------------------------------------------
//** Function: main
//** Description: Declare the main entry point for the shader
//** Input: VS_INPUT_STRUCT, derived from the stream
//** mapping parameters defined in the workspace
//** Returns: VS_OUTPUT_STRUCT
//**---------------------------------------------------------
VS_OUTPUT_STRUCT VS( VS_INPUT_STRUCT vsInStruct )
{
VS_OUTPUT_STRUCT vsOutStruct; //** Declare the output struct
vsOutStruct.position = mul(vsInStruct.position, matWorldViewProj );
float3 position = mul( vsInStruct.position, matViewInv );
//**----------------------------------------------
//** Pass the bump and base texture coords through
//**----------------------------------------------
vsOutStruct.bump_map = vsInStruct.texcoord0;
//**--------------------------------------------
//** Calculate the light vector in object space,
//** and then transform it into texture space.
//**--------------------------------------------
float3 temp_light_position = mul( vecAmbient, matMtl );
float3 temp_light_vector = temp_light_position - vsInStruct.position;
vsOutStruct.light_vector.x = dot( temp_light_vector, vsInStruct.tangent );
vsOutStruct.light_vector.y = dot( temp_light_vector, vsInStruct.binormal );
vsOutStruct.light_vector.z = dot( temp_light_vector, vsInStruct.normal );
//**-------------------------------------------
//** Calculate the view vector in object space,
//** and then transform it into texture space.
//**-------------------------------------------
float3 temp_eye_position = mul( vecViewPos, matMtl );
float3 temp_view_vector = temp_eye_position - vsInStruct.position;
float3 temp_view_vector2;
temp_view_vector2.x = dot( temp_view_vector, vsInStruct.tangent );
temp_view_vector2.y = dot( temp_view_vector, vsInStruct.binormal );
temp_view_vector2.z = dot( temp_view_vector, vsInStruct.normal );
//**-------------------------
//** Calculate the half angle
//**-------------------------
vsOutStruct.half_angle = vsOutStruct.light_vector + temp_view_vector2;
//**-----------------------------------------
//** Construct the transpose of the tangent
//** space basis vectors, so we can transform
//** the reflection vector from texture space
//** into view space
//**-----------------------------------------
vsOutStruct.basis1.x = vsInStruct.tangent.x;
vsOutStruct.basis1.y = vsInStruct.binormal.x;
vsOutStruct.basis1.z = vsInStruct.normal.x;
vsOutStruct.basis2.x = vsInStruct.tangent.y;
vsOutStruct.basis2.y = vsInStruct.binormal.y;
vsOutStruct.basis2.z = vsInStruct.normal.y;
vsOutStruct.basis3.x = vsInStruct.tangent.z;
vsOutStruct.basis3.y = vsInStruct.binormal.z;
vsOutStruct.basis3.z = vsInStruct.normal.z;
return vsOutStruct; //** Return the resulting output struct
}
sampler base_map = sampler_state
{
texture=(entSkin1);
MAGFILTER = LINEAR;
MINFILTER = LINEAR;
MIPFILTER = LINEAR;
};
sampler bump_map = sampler_state
{
texture=(entSkin2);
MAGFILTER = LINEAR;
MINFILTER = LINEAR;
MIPFILTER = LINEAR;
};
sampler environment_map = sampler_state
{
texture=(mtlSkin2);
};
struct PS_INPUT_STRUCT
{
float2 bump_map: TEXCOORD0;
float3 light_vector: TEXCOORD1;
float3 half_angle: TEXCOORD2;
float3 basis1: TEXCOORD3;
float3 basis2: TEXCOORD4;
float3 basis3: TEXCOORD5;
};
struct PS_OUTPUT_STRUCT
{
float4 color0: COLOR0;
};
//**---------------------------------------------------------
//** Function: main
//** Description: Declare the main entry point for the shader
//** Input: PS_INPUT_STRUCT, derived from the output of
//** the associated vertex shader
//** Returns: PS_OUTPUT_STRUCT
//**---------------------------------------------------------
float4x4 matWorldViewInv;
PS_OUTPUT_STRUCT PS( PS_INPUT_STRUCT psInStruct )
{
PS_OUTPUT_STRUCT psOutStruct;
//**----------------------------------------
//** Get the base and bump map texture coord
//**----------------------------------------
float4 bump_coord = { psInStruct.bump_map, 0.0f, reflection_clarity };
//**------------------------------------------------------
//** Retreive the base color and bump components from the
//** respective textures, based on the passed bump coords.
//**------------------------------------------------------
float3 base = tex2D( base_map, bump_coord );
float3 bump = tex2D( bump_map, bump_coord );
//**--------------------------------------------------
//** Includes MIP bias to help clairify the reflection
//**--------------------------------------------------
float3 reflection_bump = tex2Dbias( bump_map, bump_coord );
//**----------------------------------------------------
//** Normalize the passed vectors from the vertex shader
//**----------------------------------------------------
float3 normalized_light_vector = normalize( psInStruct.light_vector );
float3 normalized_half_angle = normalize( psInStruct.half_angle );
//**--------------------------------------------------------
//** "Smooth out" the bumps based on the bumpiness parameter.
//** This is simply a linear interpolation between a "flat"
//** normal and a "bumped" normal. Note that this "flat"
//** normal is based on the texture space coordinate basis.
//**--------------------------------------------------------
float3 smooth;
smooth.r = 0.5f;
smooth.g = 0.5f;
smooth.b = 1.0f;
bump = lerp( smooth, bump, bumpiness );
bump = normalize( ( bump * 2.0f ) - 1.0f );
reflection_bump = lerp( smooth, reflection_bump, bumpiness );
reflection_bump = normalize( ( reflection_bump * 2.0f ) - 1.0f );
//**---------------------------------------------
//** Translate the reflection normal from texture
//** space into view space, so we can case the
//** reflection vector into an environment map.
//**---------------------------------------------
float3 reflection = reflection_bump;
reflection.x = dot( reflection_bump, psInStruct.basis1 );
reflection.y = dot( reflection_bump, psInStruct.basis2 );
reflection.z = dot( reflection_bump, psInStruct.basis3 );
float3 reflection_vector = mul( matMtl, reflection );
reflection_vector = normalize( reflection_vector );
//**------------------------------------------
//** Calculate the resulting reflection color.
//**------------------------------------------
float3 reflection_color = texCUBE( environment_map, reflection_vector );
//**----------------------------------------------------------
//** The following modifiers are used to enhance the effect of
//** the basic reflection idea. Normally, specular / gloss
//** maps will take the place of these modifiers.
//**----------------------------------------------------------
float3 result_color = lerp( base, reflection_color, base * reflectance );
float3 modified_specular_color = specular * base;
float3 modified_specular_coefficient = Ks * base;
//**---------------------------------------------------------
//** These dot products are used for the lighting model
//** equations. The surface normal dotted with the light
//** vector is denoted by n_dot_l. The normal vector
//** dotted with the half angle vector is denoted by n_dot_h.
//**---------------------------------------------------------
float3 n_dot_l = dot( bump, normalized_light_vector );
float3 n_dot_h = dot( bump, normalized_half_angle );
//**--------------------------------------
//** Calculate the resulting base color,
//** based on our lighting model.
//** Ambient + Diffuse + Specular
//**--------------------------------------
psOutStruct.color0.rgb =
( result_color * ambient * Ka ) +
( result_color * diffuse * Kd * max( 0, n_dot_l ) ) +
( modified_specular_color * modified_specular_coefficient * pow( max( 0, n_dot_h ), specular_power ) );
//**------------------------------------
//** Interpolate the resulting color
//** based on the reflectance parameter.
//**------------------------------------
psOutStruct.color0.a = 1.0f; //** Set the alpha component manually
return psOutStruct; //** Return the resulting output struct
}
technique env_bump
{
pass Single_Pass
{
VertexShader = compile vs_2_0 VS();
PixelShader = compile ps_2_0 PS();
}
}
