SDL_SetTextureAlphaModFloat(3)

Usage

#include "SDL3/SDL.h"

bool SDL_SetTextureAlphaModFloat(SDL_Texture *texture, float alpha);

Header file

Defined in SDL3/SDL_render.h

Overview

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 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.

Referred to by

SDL_SetTextureAlphaMod(3) Set an additional alpha value multiplied into render copy operations. SDL_GetTextureAlphaModFloat(3) Get the additional alpha value multiplied into render copy operations. SDL_SetTextureColorModFloat(3) Set an additional color value multiplied into render copy operations.