Name
sdl.SetTextureColorMod -- set texture color modulation
Synopsis
r = sdl.SetTextureColorMod(tex, r, g, b)
Function
Use this function to 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.

The tex argument must simply be the identifier of a hardware brush.

Inputs
tex
identifier of hardware brush
r
the red color value multiplied into copy operations (ranging from 0 to 255)
g
the green color value multiplied into copy operations (ranging from 0 to 255)
b
the blue color value multiplied into copy operations (ranging from 0 to 255)
Results
r
0 on success or a negative error code on failure
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