The texture to update.
The source alpha value multiplied into copy operations.
true on success or false on failure; call SDL_GetError for more information.
Threadsafety: This function should only be called on the main thread.
Page generated by adrdox
Set an additional alpha value multiplied into render copy operations.
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.