setBlending(source, destination)
- sets the blending source and destination values.
source:
- 0 = bge.logic.BL_ZERO
- 1 = bge.logic.BL_ONE
- 768 = bge.logic.BL_SRC_COLOR
- 769 = bge.logic.BL_ONE_MINUS_SRC_COLOR
- 774 = bge.logic.BL_DST_COLOR
- 775 = bge.logic.BL_ONE_MINUS_DST_COLOR
- 770 = bge.logic.BL_SRC_ALPHA
- 771 = bge.logic.BL_ONE_MINUS_SRC_ALPHA
- 772 = bge.logic.BL_DST_ALPHA
- 773 = bge.logic.BL_ONE_MINUS_DST_ALPHA
- 776 = bge.logic.BL_SRC_ALPHA_SATURATE
- 0 = bge.logic.BL_ZERO
- 1 = bge.logic.BL_ONE
- 768 = bge.logic.BL_SRC_COLOR
- 769 = bge.logic.BL_ONE_MINUS_SRC_COLOR
- 774 = bge.logic.BL_DST_COLOR
- 775 = bge.logic.BL_ONE_MINUS_DST_COLOR
- 770 = bge.logic.BL_SRC_ALPHA
- 771 = bge.logic.BL_ONE_MINUS_SRC_ALPHA
- 772 = bge.logic.BL_DST_ALPHA
- 773 = bge.logic.BL_ONE_MINUS_DST_ALPHA
- 776 = bge.logic.BL_SRC_ALPHA_SATURATE
Note:
- Textures are drawn by blending the incoming (source) RGBA color values with the RGBA color values already in the frame buffer (destination)
- Works with Multitexture. Doesn't work with GLSL or Singletexture.
- Properties menu >> Scene button >> Shading >> Multitexture
Sample Code
# The code below uses a texture's alpha channel.
# The Alpha in the Game Setting tab doesn't have to be enabled.
# import bge
import bge
# get the current controller
controller = bge.logic.getCurrentController()
# get object that owns this controller
obj = controller.owner
# There's only one mesh on my model
mesh = obj.meshes[0]
# And only one material on the mesh
mat = mesh.materials[0]
# set blending of pixels to use texture's alpha channel
# using Multitexture Shading
mat.setBlending(bge.logic.BL_SRC_ALPHA , bge.logic.BL_ONE_MINUS_SRC_ALPHA )