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SDL_BlendFactor
An enumeration of blend factors used when creating a custom blend mode with SDL_ComposeCustomBlendMode().
Contents
Values
SDL_BLENDFACTOR_ZERO |
0, 0, 0, 0 |
SDL_BLENDFACTOR_ONE |
1, 1, 1, 1 |
SDL_BLENDFACTOR_SRC_COLOR |
srcR, srcG, srcB, srcA |
SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR |
1-srcR, 1-srcG, 1-srcB, 1-srcA |
SDL_BLENDFACTOR_SRC_ALPHA |
srcA, srcA, srcA, srcA |
SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA |
1-srcA, 1-srcA, 1-srcA, 1-srcA |
SDL_BLENDFACTOR_DST_COLOR |
dstR, dstG, dstB, dstA |
SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR |
1-dstR, 1-dstG, 1-dstB, 1-dstA |
SDL_BLENDFACTOR_DST_ALPHA |
dstA, dstA, dstA, dstA |
SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA |
1-dstA, 1-dstA, 1-dstA, 1-dstA |
Code Examples
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Remarks
The blend factors are multiplied with the pixels from a drawing operation (src) and the pixels from the render target (dst) before the blend operation. The comma-separated factors listed above are always applied in the component order red, green, blue, and alpha.
Some renderers may not support all factors. See SDL_ComposeCustomBlendMode() for a list of what the current renderers support.
Version
This enumeration is available since SDL 2.0.6.
Related Enumerations
