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blend

blend.<program>=<off|src dst srcA dstA>

Location: shaders.properties

Controls the alpha blending for a specific gbuffers program, and optionally per-buffer.

Replace:

  • <program> with a gbuffers program

Setting the value to off will disable alpha blending, otherwise the blending parameters are specified:

  • src is the source color multiplier
  • dst is the destination color multiplier
  • srcA is the source alpha multiplier
  • dstA is the destination alpha multiplier

Each of the parameters should be filled with one of the following: ZERO, ONE, SRC_COLOR, ONE_MINUS_SRC_COLOR, DST_COLOR, ONE_MINUS_DST_COLOR, SRC_ALPHA, ONE_MINUS_SRC_ALPHA, DST_ALPHA, ONE_MINUS_DST_ALPHA, SRC_ALPHA_SATURATE.

The default alpha blending parameters for transparent geometry are: SRC_ALPHA, ONE_MINUS_SRC_ALPHA, ONE, ONE_MINUS_SRC_ALPHA respectively.

More info on alpha blending can be found at the Khronos Wiki

Per-Buffer Blending

blend.<program>.<buffer>=<off|src dst srcA dstA>

By specifying a buffer name (e.g. colortex5) in <buffer> you can apply the blending to a specific buffer only. Any buffers that aren’t specified will use the program’s blending attributes (see above).