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Size: 986
Comment: remove draft
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← Revision 9 as of 2011-01-04 00:34:29 ⇥
Size: 1003
Comment: minor change for consistency
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| '''blendMode''' can be one of these values: <<Include(SDL_BlendMode, , , from="== Values ==", to="== Code Examples ==")>> | '''blendMode''' will be filled in with one of the following: <<Include(SDL_BlendMode, , , from="== Values ==", to="== Code Examples ==")>> |
SDL_GetSurfaceBlendMode
Use this function to get the blend mode used for blit operations.
Contents
Syntax
int SDL_GetSurfaceBlendMode(SDL_Surface* surface,
SDL_BlendMode* blendMode)
Function Parameters
surface |
the SDL_Surface structure to query |
blendMode |
a pointer filled in with the current SDL_BlendMode; see Remarks for details |
Return Value
Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.
Code Examples
You can add your code example here
Remarks
blendMode will be filled in with one of the following:
SDL_BLENDMODE_NONE |
no blending |
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dstRGBA = srcRGBA |
SDL_BLENDMODE_BLEND |
alpha blending |
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dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA)) |
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dstA = srcA + (dstA * (1-srcA)) |
SDL_BLENDMODE_ADD |
additive blending |
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dstRGB = (srcRGB * srcA) + dstRGB |
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dstA = dstA |
SDL_BLENDMODE_MOD |
color modulate |
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dstRGB = srcRGB * dstRGB |
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dstA = dstA |
