how transport a picture to postProcessStage

CesiumJS
1

hi,friend, I want to Transport a picture to uniform sample2D pic in postProcessStage ,now i have rgb array or jpg in textureUnit1

2

You can pass in a uniforms object, see the docs:

https://cesiumjs.org/Cesium/Build/Documentation/PostProcessStage.html

For example, I modified the post process Sandcastle here to add another texture:

So instead of:

viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({

fragmentShader : fragmentShaderSource

}));

``

I had:

viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({

fragmentShader : fragmentShaderSource,

uniforms : {

customTexture : ‘…/images/bumpmap.png’

}

}));

``

You can then access this in the shader by declaring the uniform:

uniform sampler2D customTexture;

``

Does that help?

3

oh, actually, I plan to render the scene to in a textureUnit in my frameBufferObj,then i want transport the texture to postprocessStage . then ,how to define the custom value.

viewer.scene.postProcessStages.add(new Cesium.PostProcessStage({

fragmentShader : fragmentShaderSource,

uniforms : {

customTexture : here,what’s the value.

}

}));