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SDL_BlendFactor

An enumeration of blend factors used when creating a custom blend mode with SDL_ComposeCustomBlendMode().

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

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.

SDL_BlendOperation
SDL_ComposeCustomBlendMode
SDL_SetRenderDrawBlendMode
SDL_SetTextureBlendMode

CategoryEnum, CategoryRender, CategoryDraft


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