Function sdl2_sys::SDL_SetTextureColorMod

source ยท 
pub unsafe extern "C" fn SDL_SetTextureColorMod(
    texture: *mut SDL_Texture,
    r: Uint8,
    g: Uint8,
    b: Uint8,
) -> c_int
Expand description

Set an additional color value multiplied into render copy operations.

When this texture is rendered, during the copy operation each source color channel is modulated by the appropriate color value according to the following formula:

srcC = srcC * (color / 255)

Color modulation is not always supported by the renderer; it will return -1 if color modulation is not supported.

\param texture the texture to update \param r the red color value multiplied into copy operations \param g the green color value multiplied into copy operations \param b the blue color value multiplied into copy operations \returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

\since This function is available since SDL 2.0.0.

\sa SDL_GetTextureColorMod \sa SDL_SetTextureAlphaMod