» Tutorial Effects - Pixelshader Preparations
This site relies heavily on Javascript. You should enable it if you want the full experience. Learn more.

Tutorial Effects - Pixelshader Preparations

Italian | Spanish | Mandarin | French | Japanese

TOC: Of Effects and Shaders
Next: Manipulating Colors


For all the pixelshader examples we are using the same basic patch setup featuring a 2x2 Grid (EX9.Geometry) and a FileTexture (EX9.Texture) connected to an effect and the renderers View Transform scaled by two so that the grid fills the whole view:

Instead of the Template node in the patch we always clone us a new effect as described on the effects page. Connect your newly cloned effect as shown in the patch and open the CodeEditor via a rightclick on the node. Then take the code below and replace it with the templates code as this one is even more simplified leaving out the vertexshader portions which we don't need for now.

//texture
texture Tex <string uiname="Texture";>;
sampler Samp = sampler_state    //sampler for doing the texture-lookup
{
    Texture   = (Tex);          //apply a texture to the sampler
    MipFilter = LINEAR;         //sampler states
    MinFilter = LINEAR;
    MagFilter = LINEAR;
};
 
//the data structure: "vertexshader to pixelshader"
//used as output data with the VS function
//and as input data with the PS function
struct vs2ps
{
    float4 Pos  : POSITION;
    float2 TexCd : TEXCOORD0;
};
 
float4 PS(vs2ps In): COLOR
{
    return 1;
}
 
technique TSimpleShader
{
    pass P0
    {
        VertexShader = null;
        PixelShader  = compile ps_2_0 PS();
    }
}

Press CTRL+S to save/compile the code. No errors should show up. If you get an error at this point make sure you really copied everything and your code in the editor looks exactly as pictured above.


Next: Manipulating Colors
TOC: Of Effects and Shaders

anonymous user login

Shoutbox

~15h ago

fleg: This Tuesday, Cologne: exhibition opening of "interwoven", textile disinformation patterns created with vvvv. https://fleg.de/news/exhibition-interwoven

~14d ago

manuelgonzalvez: Assimp nodes all broken afted Win Update w/exception "COM object that has been separated from its underlying RCW(...)"

~14d ago

manuelgonzalvez: @levi thanks would love to! anyway managed to get something similar working based on forum search and anthokio's patches.

~15d ago

levi: @ravasquez thanks. 31.2 x86 verrion worked. @manuelgonzalvez i have a dx11 projectTexture if u a want.

~16d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~16d ago

manuelgonzalvez: Anyone has a dx11 port of "projectedTexture" dx9 fx for projection mapping?

~16d ago

ravazquez: @levi not sure bout the ImagePack, but I believe VL.OpenCV should give you the same tools and should work with beta just fine

~17d ago

levi: anyone knows of a VVVVpacks.image that works for elliot's projector calibration patches?x64,dx11. always crashes v4 on solve.

~24d ago

Lorenz: VJing with GIFS: https://lorenzpotthast.de/gifjockey/ A fun little side project, that I first prototyped in v4 and now turned web-based ;)

~1mth ago

schlonzo: finally fixed in 4.8 nice1