DirectX Greyscale that works

This should work on all cards.

I'm going to put it in the Render 2 Texture Module.

'If you want more physically correct luminance (the eye is more receptive to some colour 
'components than others), the REC709 coefficients (For average PC monitor) are r=0.2125, 
'g=0.7154, b=0.0721. Converted To the TEXTUREFACTOR constant (multiply by 255 And convert To Hex) 
'it's: 0x0036B612 [since you have to round some of the coefficients, you lose some precision - 
'really the r,g,b parts of the constant should add up To 255 so I'd an extra 1 to the blue.

' Source Color Default is the Red Channel.


Function SetMono(state:Byte=True,dwFactor:Int = $0036B612,SourceCol:Int=$FF0000)
	If State
		SetColor((SourceCol Shr 16) & $FF,(SourceCol Shr 8) & $FF,SourceCol & $FF)
		PrimaryDevice.device.SetRenderState(D3DRS_TEXTUREFACTOR, dwFactor)
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLOROP,D3DTOP_DOTPRODUCT3)
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_TEXTURE) 
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLORARG2, D3DTA_TFACTOR)  
	Else
		PrimaryDevice.device.SetRenderState(D3DRS_TEXTUREFACTOR, $FFFFFFFF ) 
  		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLOROP,D3DTOP_MODULATE)  
		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLORARG1,D3DTA_TEXTURE)
		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLORARG2,D3DTA_DIFFUSE)
		SetColor 255,255,255
	EndIf
End Function

Can someone convert this to OGL?

OK... This converts the entire pic by default to shades of red, at least for me... Can it also do the B&W?

(Tweaking the SourceCol field will make the picture red, green of blue tinted, or a combination of the above... But not monochrome?)

ATI Radeon 9600 Pro

This :

Strict

Graphics 800,600,0

Local t:timage = LoadImage("weirdclouds.jpg")

SetBlend(alphablend)


SetMono(True,$0036B612,$777777) 

DrawImageRect(t,0,0,400,300)
SetMono(False)
DrawImageRect(t,400,0,400,300)
Flip

WaitMouse()



'If you want more physically correct luminance (the eye is more receptive to some colour 
'components than others), the REC709 coefficients (For average PC monitor) are r=0.2125, 
'g=0.7154, b=0.0721. Converted To the TEXTUREFACTOR constant (multiply by 255 And convert To Hex) 
'it's: 0x0036B612 [since you have to round some of the coefficients, you lose some precision - 
'really the r,g,b parts of the constant should add up To 255 so I'd an extra 1 to the blue.

' Source Color Default is the Red Channel.


Function SetMono(state:Byte=True,dwFactor:Int = $0036B612,SourceCol:Int=$555555)
	If State
		SetColor((SourceCol Shr 16) & $FF,(SourceCol Shr 8) & $FF,SourceCol & $FF)
		PrimaryDevice.device.SetRenderState(D3DRS_TEXTUREFACTOR, dwFactor)
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLOROP,D3DTOP_DOTPRODUCT3)
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLORARG1, D3DTA_TEXTURE) 
  		PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLORARG2, D3DTA_TFACTOR)  
	Else
		PrimaryDevice.device.SetRenderState(D3DRS_TEXTUREFACTOR, $FFFFFFFF ) 
  		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLOROP,D3DTOP_MODULATE)  
		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLORARG1,D3DTA_TEXTURE)
		PrimaryDevice.device.SetTextureStageState(1,D3DTSS_COLORARG2,D3DTA_DIFFUSE)
		SetColor 255,255,255
	EndIf
End Function

Gives :

Thats how it looks on both my computers, one with onboard gfx, the other with n6600GT.

Lol Crazy Man!

I've tested on

- Windows XP nVidia FX5200
- Windows XP nVidia GForce 3D thingie (crap old card)
- Windows 98 Matrox G400

And it works!

I get the same as Zawran on my W2K S3 laptop.

Same here:



Radeon 9600 Pro

I get the same as xlsior and zawran here.

If I use 'D3DTA_CURRENT', as per Mr O'Conner's original post, I end up with an inverted greyscale image.

Doesn't work for a x850xt-pe as well. See Zawran.

Doesn't work on radeon 9200, winxp ! same as zawran.

I'm gonna check under the hood and make sure I did not change anything there :)

I rebuilt BMAX from scratch and I still get Greyscale!!!

I had an idea... Change all the "1"'s to "0"'s

PrimaryDevice.device.SetTextureStageState(1, D3DTSS_COLOROP,D3DTOP_DOTPRODUCT3)

Change to :
PrimaryDevice.device.SetTextureStageState(0, D3DTSS_COLOROP,D3DTOP_DOTPRODUCT3)[/code]

If I change the 1's to 0's, it gets green-shaded instead:



Any non-zero value I tried returns the same half-bright image, both positive and negative numbers.

When using 0, I notice the following: if I change the dwFactor to a different value, it affects the shade of the color directly: e.g. $00B63612 will give it a red hue, $000000FF will make it blue, etc... Using $00777777 for the dwFactor will make it full color, half-bright as well... I tseems like it is taking the RGB rather than luminecense?

Same on my S3 but it all works fine on my 9800Pro

Its green-shaded on both an onboard SiS 661FX and a n6600GT.

(still) doesn't work here...

Nah, you guys are winding me up. This has worked on every machine I have tested on.

Nah, you guys are winding me up. This has worked on every machine I have tested on.

the odd thing is that a wide range of cards all seem to misbehave in the same way - different manufacturers, chipset, etc.
Yet others apparently are OK.

Could there be any other factors, such as DirectX revision that play a role here? I'm using DX9c myself (of course that doesn't reaslly narrow it down either, considering that there are multiple different releases of that as well)

Mm. i wish there was alil 2xmodulate blend mode in there somewhere :) that would have been swell

:) Oh you people, you'll want blood next.

we want the moon on a stick.

Not to sound rude but have you done anything on the OpenGL version of the texturedPoly lib? I get an "unhandled exception:Attempt to access field or method of Null object" when trying to run your example code in OpenGL. Works fine as a cake in DX.

Yeah I have fixed that rimmsy but not released it.

To rule out any module meddling, I've re-installed 1.16 and I'm getting the same thing.

I do have the latest version of DX9c (Dec 2005) and DXDiag reports it as being version 4.09.0000.0904, If that helps any.

I have DX9.0c on my Radeon 9800Pro where this works and 9.0b on the S3 that doesn't.

This is crazy!

It works on some version of DX9 and not others! This is DX7 Code!

MODULATE2X

PrimaryDevice.device.SetTextureStageState(0, D3DTSS_COLOROP,D3DTOP_MODULATE2X)

MODULATE4X

PrimaryDevice.device.SetTextureStageState(0, D3DTSS_COLOROP,D3DTOP_MODULATE4X)

NormalMode

PrimaryDevice.device.SetTextureStageState(0, D3DTSS_COLOROP,D3DTOP_MODULATE)

MOD2X and MOD4X work nice.

Thank you for the effort im trying arround with the Modulate Modes but im just wondering how to use it the way that it was used in blitz3d. i mean that it wont erase whats behind. Just multiply so darker gets darker and lighter lighter. Its just what i need. can someone aim me in the right direction?

"latest version of DX9c (Dec 2005)"

Ahm, I use directx9.0c (Feb 2006)... :P

MS seems to hate version numbers lately... ;)

Take it up with Microsoft...

http://www.microsoft.com/windows/directx/default.aspx