Blending Mode Configuration

[wddl]

Is your feature request related to a problem? Please describe.
The blending mode of custom material I need is specified as follows:
mRasterState.blendFunctionSrcRGB = BlendFunction::ONE_MINUS_DST_ALPHA; mRasterState.blendFunctionSrcAlpha = BlendFunction::ONE_MINUS_DST_ALPHA; mRasterState.blendFunctionDstRGB = BlendFunction::ONE; mRasterState.blendFunctionDstAlpha = BlendFunction::ONE;
However, the engine's default blending mode does not have this option. The default settings are:
mRasterState.blendFunctionSrcRGB = BlendFunction::ONE; mRasterState.blendFunctionSrcAlpha = BlendFunction::ONE; mRasterState.blendFunctionDstRGB = BlendFunction::ONE_MINUS_SRC_ALPHA; mRasterState.blendFunctionDstAlpha = BlendFunction::ONE_MINUS_SRC_ALPHA; mRasterState.depthWrite = false;
When I modify the source code to use the required mode, the image displays as a black screen and does not render correctly. Could you please advise on how to proceed?

Describe the solution you'd like
can support the blend mode set to mRasterState.blendFunctionSrcRGB = BlendFunction::ONE_MINUS_DST_ALPHA; mRasterState.blendFunctionSrcAlpha = BlendFunction::ONE_MINUS_DST_ALPHA; mRasterState.blendFunctionDstRGB = BlendFunction::ONE; mRasterState.blendFunctionDstAlpha = BlendFunction::ONE;

Describe alternatives you've considered
How to modify the source code to support the above blending mode?

OS and backend

[romainguy]

What are you trying to achieve?

[wddl]

@romainguy
I am trying rendering point cloud with 'Gaussian splatting' method. The blending mode for this algorithm is gl.blendFuncSeparate( gl.ONE_MINUS_DST_ALPHA, gl.ONE, gl.ONE_MINUS_DST_ALPHA, gl.ONE, );, but the engine does not have this option."