SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)

SDL_BlendMode

The blend mode used in SDL_RenderCopy() and drawing operations.

Header File

Defined in [SDL_blendmode.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_blendmode.h), but apps should _only_ `#include "SDL.h"`!

Syntax

typedef enum SDL_BlendMode
{
    SDL_BLENDMODE_NONE = 0x00000000,     /**< no blending
                                              dstRGBA = srcRGBA */
    SDL_BLENDMODE_BLEND = 0x00000001,    /**< alpha blending
                                              dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))
                                              dstA = srcA + (dstA * (1-srcA)) */
    SDL_BLENDMODE_ADD = 0x00000002,      /**< additive blending
                                              dstRGB = (srcRGB * srcA) + dstRGB
                                              dstA = dstA */
    SDL_BLENDMODE_MOD = 0x00000004,      /**< color modulate
                                              dstRGB = srcRGB * dstRGB
                                              dstA = dstA */
    SDL_BLENDMODE_MUL = 0x00000008,      /**< color multiply
                                              dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
                                              dstA = dstA */
    SDL_BLENDMODE_INVALID = 0x7FFFFFFF

    /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */

} SDL_BlendMode;
SDL_RendererInfo

CategoryAPI, CategoryAPIEnum, CategoryEnum, CategoryVideo

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