SDL_SetTextureAlphaMod - Man Page
Set an additional alpha value multiplied into render copy operations.
Header File
Defined in SDL3/SDL_render.h
Synopsis
#include "SDL3/SDL.h" bool SDL_SetTextureAlphaMod(SDL_Texture *texture, Uint8 alpha);
Description
When this texture is rendered, during the copy operation the source alpha value is modulated by this alpha value according to the following formula: srcA=srcA*(alpha/255) Alpha modulation is not always supported by the renderer; it will return false if alpha modulation is not supported.
Function Parameters
- texture
the texture to update.
- alpha
the source alpha value multiplied into copy operations.
Return Value
Returns true on success or false on failure; call
SDL_GetError () for more information.
Thread Safety
This function should only be called on the main thread.
Availability
This function is available since SDL 3.2.0.
See Also
·(3), SDL_GetTextureAlphaMod(3), ·(3), SDL_SetTextureAlphaModFloat(3), ·(3), SDL_SetTextureColorMod(3)
Referenced By
SDL_GetTextureAlphaMod(3), SDL_SetTextureAlphaModFloat(3), SDL_SetTextureColorMod(3).