Vary amount of transparency: material or shaderParm howto..?

[Bikerdude]

So trying to add some specular -

translucent/pumpkin

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin
	
    specularmap	models/darkmod/props/textures/pumpkin_s

    description "translucent paper for lamps"

    {
    blend bumpmap
    map models/darkmod/props/textures/pumpkin_local
    rgb 1.0
    vertexcolor
    }

    {
    blend diffusemap
    map _white
    red 0.5
    green 0.2
    blue 0.1
    }

    {
    blend bumpmap
    map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
    rgb 1.0
    inversevertexcolor
    }

    {
    blend diffusemap
    map _white
    red 0.5
    green 0.2
    blue 0.1
    }

    {
        vertexProgram colorProcess.vfp
        vertexParm  0  0 , 0  	// texture scrolling
        vertexParm  1  2  		// magnitude of the distortion

        fragmentProgram colorProcess.vfp
        fragmentMap 0  _currentRender
        fragmentMap 1  models/darkmod/props/textures/pumpkin_local
        fragmentMap 2 _currentDepth
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin
        alpha 0.8
        rgb 1.0
    }    

    {
     blend bumpmap
     map models/darkmod/props/textures/pumpkin_local
     }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

[nbohr1more]

Specular needs to go after each diffuse stage at the top.

 

You still have the pumpkin normal map set to fragmentMap 1 rather then _flat ?

[Bikerdude]

• Specular needs to go after each diffuse stage at the top.

You still have the pumpkin normal map set to fragmentMap 1 rather then _flat ?

• ah ok, got an example..?

Didnt think I needed to change as the "colorProcess.vfp" got around the issue..?

[nbohr1more]

So trying to add some specular -

translucent/pumpkin

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin
	
 

    description "translucent paper for lamps"

    {
    blend bumpmap
    map models/darkmod/props/textures/pumpkin_local
    rgb 1.0
    vertexcolor
    }

    {
    blend diffusemap
    map _white
    red 0.5
    green 0.2
    blue 0.1
    }

{

Blend specularmap

Map models/darkmod/props/textures/pumpkin_s

RGB 0.5

}
    {
    blend bumpmap
    map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
    rgb 1.0
    inversevertexcolor
    }

    {
    blend diffusemap
    map _white
    red 0.5
    green 0.2
    blue 0.1
    }

{
  Blend specularmap
 Map models/darkmod/props/textures/pumpkin_s
RGB 0.5
}

    {
        vertexProgram colorProcess.vfp
        vertexParm  0  0 , 0  	// texture scrolling
        vertexParm  1  2  		// magnitude of the distortion

        fragmentProgram HeathazeWithMaskAndDepth.vfp
        fragmentMap 0  _currentRender
        fragmentMap 1  _flat
        fragmentMap 2 _currentDepth
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin
        alpha 0.8
        rgb 1.0
    }    

    {
     blend bumpmap
     map models/darkmod/props/textures/pumpkin_local
     }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

Edited your example. At the ride park with the family so I didn't have time to check the spelling of the vfp but that's how it should work.

[Spooks]

For the record, it doesn't seem the vertexcolor keywords do anything without that custom vertex program so I think those can be truncated.

[Bikerdude]

Edited your example. At the ride park with the family so I didn't have time to check the spelling of the vfp but that's how it should work.

Didnt appear to work and causes a nasty flicker as you move around the lampion's

translucent/pumpkin

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin
	
    description "translucent paper for lamps"

    {
	blend bumpmap
	map models/darkmod/props/textures/pumpkin_local
	rgb 1.0
	vertexcolor
    }

    {
	blend diffusemap
	map _white
	red 0.5
	green 0.2
	blue 0.1
    }

    {
	Blend 	specularmap
	Map 	models/darkmod/props/textures/pumpkin_s
	rgb 0.5
    }
	
    {
	blend bumpmap
	map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
	rgb 1.0
	inversevertexcolor
    }

    {
	blend diffusemap
	map _white
	red 0.5
	green 0.2
	blue 0.1
    }

    {
	Blend 	specularmap
	Map 	models/darkmod/props/textures/pumpkin_s
	rgb 0.5
    }

    {
        vertexProgram colorProcess.vfp
        vertexParm  0  0 , 0  	// texture scrolling
        vertexParm  1  2  		// magnitude of the distortion

        fragmentProgram HeathazeWithMaskAndDepth.vfp
        fragmentMap 0  _currentRender
        fragmentMap 1  _flat
        fragmentMap 2 _currentDepth
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin
        alpha 0.8
        rgb 1.0
    }    

    {
	blend bumpmap
	map models/darkmod/props/textures/pumpkin_local
    }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

[nbohr1more]

Remove the 2nd specular stage. It's probably z-fighting. That said, it's probably best to use _white here and tone it down with RGB

[Bikerdude]

Ok, will try that tomoz, thanks again for your help on this.

[nbohr1more]

I tried to reduce the shader complexity and make an even simpler version but both the colorprocess vfp and my own

variant had the problem of "toggling the diffuse stage off" in a binary fashion when not centered in view and at the boundary of the light volume.

 

Using the heathaze shader with the fragmentMap 1 set to _flat fixed the problem.

 

Probably needs to translate coordinates to screen-space perspective as part of the solution to prevent that.

 

Still crackin' away at optimization but I don't know if it's worth it.

 

The solution works and these operations are fairly light on the GPU anyway.

[AluminumHaste]

Now is the back facing light, for example on those curtains, added to front lantern light? Or is it one or the other?

[nbohr1more]

If you don't add the transparency effect, the behavior works in such a way that lighting in front obscures back lighting

proportional to how much hits each side.

 

With the transparency there, you get shading from all sides as expected, though it's probably wasteful to do both effects here.

You could probably get away with just one "lit stages group" but the translucency effect does finally solve that longstanding complaint

about interior caustics for transparent objects like flasks.

[nbohr1more]

This is as small as I can get the VFP program without causing the diffuse cutoff glitch:

 

 

 
!!ARBvp1.0 OPTION ARB_position_invariant ;

# input:
#
# texcoord[0] TEX0    texcoords
#
# output:
#
# texture 0 is _currentRender
#
# texCoord[2] is the copied deform magnitude

TEMP    R0, R1;

MUL        result.texcoord[2], R1, 1.0;

END

#======================================================================

!!ARBfp1.0
OPTION ARB_precision_hint_fastest;

# texture 0 is _currentRender
#
# env[0] is the 1.0 to _currentRender conversion
# env[1] is the fragment.position to 0.0 - 1.0 conversion

TEMP    R0;

# calculate the screen texcoord in the 0.0 to 1.0 range
MUL        R0, fragment.position, program.env[1];

# scale by the screen non-power-of-two-adjust
MUL        R0, R0, program.env[0];

# load the screen render
TEX        result.color.xyz, R0, texture[0], 2D;

END
 

[Bikerdude]

I assume this should saved as heatshaze_new and references in the lampion test material..?

[nbohr1more]

Yeah, I committee transparency_hack.vfp to SVN last night. You can rename it anything you like then make sure you have this block:

{
VertexProgram transparency_hack.vfp
FragmentProgram transparency_hack.vfp
FragmentMap 0 _currentRender
}

Instead of heathaze in your material def.

[Bikerdude]

Ok I think I screwed up somewhere as the textures are now black in-game.

 

transparency_hack.vfp

 
!!ARBvp1.0 OPTION ARB_position_invariant ;

# input:
#
# texcoord[0] TEX0    texcoords
#
# output:
#
# texture 0 is _currentRender
#
# texCoord[2] is the copied deform magnitude

TEMP    R0, R1;

MUL        result.texcoord[2], R1, 1.0;

END

#======================================================================

!!ARBfp1.0
OPTION ARB_precision_hint_fastest;

# texture 0 is _currentRender
#
# env[0] is the 1.0 to _currentRender conversion
# env[1] is the fragment.position to 0.0 - 1.0 conversion

TEMP    R0;

# calculate the screen texcoord in the 0.0 to 1.0 range
MUL        R0, fragment.position, program.env[1];

# scale by the screen non-power-of-two-adjust
MUL        R0, R0, program.env[0];

# load the screen render
TEX        result.color.xyz, R0, texture[0], 2D;

END

bkd_translucent_test.mtr

translucent/pumpkin

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin
	
    description "translucent paper for lamps"

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
		rgb 1.0
		vertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }
	
    {
		blend bumpmap
		map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
		rgb 1.0
		inversevertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

	{
		VertexProgram transparency_hack.vfp
		FragmentProgram transparency_hack.vfp
		FragmantMap 0 _currentRender
	}

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin
        alpha 0.8
        rgb 1.0
    }    

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
    }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_green

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_green
	
    description "translucent paper for lamps"

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
		rgb 1.0
		vertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }
	
    {
		blend bumpmap
		map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
		rgb 1.0
		inversevertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

	{
		VertexProgram transparency_hack.vfp
		FragmentProgram transparency_hack.vfp
		FragmantMap 0 _currentRender
	}

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_green
        alpha 0.8
        rgb 1.0
    }    

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
    }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_red
{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_red	
    description "translucent paper for lamps"

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
		rgb 1.0
		vertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

    {
		blend bumpmap
		map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
		rgb 1.0
		inversevertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

	{
		VertexProgram transparency_hack.vfp
		FragmentProgram transparency_hack.vfp
		FragmantMap 0 _currentRender
	}

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_red        
		alpha 0.8
        rgb 1.0
    }    

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
    }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_blue
{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_blue	
    description "translucent paper for lamps"

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
		rgb 1.0
		vertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

    {
		blend bumpmap
		map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
		rgb 1.0
		inversevertexcolor
    }

    {
		blend diffusemap
		map _white
		red 0.5
		green 0.2
		blue 0.1
    }

	{
		VertexProgram transparency_hack.vfp
		FragmentProgram transparency_hack.vfp
		FragmantMap 0 _currentRender
	}

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_blue        
		alpha 0.8
        rgb 1.0
    }    

    {
		blend bumpmap
		map models/darkmod/props/textures/pumpkin_local
    }

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

[nbohr1more]

Change: fragmantMap to fragmentMap.

 

I was the one with a misspell this time

 

Fixed material:

 

 

 

 

 

 
translucent/pumpkin

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin
    
    description "translucent paper for lamps"

    {
        blend bumpmap
        map models/darkmod/props/textures/pumpkin_local
        rgb 1.0
        vertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }
    
    {
        blend bumpmap
        map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
        rgb 1.0
        inversevertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        vertexProgram transparency_hack.vfp
        fragmentProgram transparency_hack.vfp
        fragmentMap 0 _currentRender
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin
        alpha 0.8
        rgb 1.0
    }    

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_green

{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_green
    
    description "translucent paper for lamps"

    {
        blend bumpmap
        map models/darkmod/props/textures/pumpkin_local
        rgb 1.0
        vertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }
    
    {
        blend bumpmap
        map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
        rgb 1.0
        inversevertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        vertexProgram transparency_hack.vfp
        fragmentProgram transparency_hack.vfp
        fragmentMap 0 _currentRender
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_green
        alpha 0.8
        rgb 1.0
    }    

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_red
{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_red    
    description "translucent paper for lamps"

    {
        blend bumpmap
        map models/darkmod/props/textures/pumpkin_local
        rgb 1.0
        vertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        blend bumpmap
        map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
        rgb 1.0
        inversevertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        vertexProgram transparency_hack.vfp
        fragmentProgram transparency_hack.vfp
        fragmentMap 0 _currentRender
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_red        
        alpha 0.8
        rgb 1.0
    }    

    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}

translucent/pumpkin_blue
{
    noshadows
    twoSided
    translucent
    forceoverlays
    sort decal
    forceOpaque

    qer_editorimage models/darkmod/props/textures/pumpkin_blue    
    description "translucent paper for lamps"

    {
        blend bumpmap
        map models/darkmod/props/textures/pumpkin_local
        rgb 1.0
        vertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        blend bumpmap
        map scale(models/darkmod/props/textures/pumpkin_local, 1, 1, 0, 1)
        rgb 1.0
        inversevertexcolor
    }

    {
        blend diffusemap
        map _white
        red 0.5
        green 0.2
        blue 0.1
    }

    {
        vertexProgram transparency_hack.vfp
        fragmentProgram transparency_hack.vfp
        fragmentMap 0 _currentRender
    }

    //--------------------------------------------------------------------------------------------------------

    // add our texture on top
    {
        blend blend
        maskalpha
        map    models/darkmod/props/textures/pumpkin_blue        
        alpha 0.8
        rgb 1.0
    }    


    // TDM Ambient Method Related

    {                            
        if (global5 == 1)        
        blend add                
        map              _black        
        scale            1, 1        
        red              global2    
        green            global3    
        blue             global4    
    }                            
}