black and white

[Katsankat]

Hi,
How to achieve this black and white effect?
Would it be possible (or best) to create a texture having the size of the screen, or place a billboard it in front of the camera, or models and ground have a special texture, or ... I don't know. On a real video you can see the gunner switch quickly between normal and night view like on the image below. It might be a thermal camera as bodies are close to white, like the copter here.
What do you think?

[twilight17]

I have very little understanding of shaders, but in my opinion they would be great for that kind of effect.

[JP]

Yeah seems like a shader would be the easiest option (if you know how to do shaders!) and then you could add in other cool effects rather than just black and white like making certain objects glow a bit or something.

[Dark_Kilauea]

You should be able to render the entire scene to a render texture, render that texture to a quad with a shader to turn color values into a scalar value, then render that quad over the entire screen.

But you are in luck, everything but the shader has been done for you with XEffects (Go look it up in project announcements).

[3DModelerMan]

You could also just set all the textures to grayscale in photoshop or something.

[Murcho]

Call of Duty 4 has a level where you play through a thermal camera that looks just like your pic above.

I've done a bit on shaders, and I would recommend looking at post-processing effects. This link has a good look at how to do the thermal shader.

[dlangdev]

XEffects has screen space filters, though there's no code for the one you're looking for. if there's demand for these XEffect filters maybe someone could write one up and post them here later.

[Katsankat]

Thank you for the replies.
This is what i got for now, without effects

FPS are voluntary blocked to 32, otherwise they go beyond 500 FPS even when shooting.

[sudi]

well its really simple. i just tried it. with my shaderlib i made the following shaderfile.

Code: Select all

<PostProcess name="BlackWhite" width="800" height="600">
	<Pipeline vertex="standard" fragment=
	"
	uniform sampler2D tex0;
	varying vec2 vTexCoord;
	
	void main()
	{
   		vec4 sample = texture2D(tex0, vTexCoord);
		float a = sample.x+sample.y+sample.z;
		a = a/3;
   		
   		gl_FragColor = vec4(a, a, a, 1.0);
	}
	" target="" tex0="BlackWhite" tex1="" tex2="" tex3="">
	</Pipeline>
</PostProcess>

And then just add some plin noise.

if u want a copy of that lib. just ask.