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Size: 890
Comment: create page, add content (Rev 5540)
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Size: 1126
Comment: update formatting - enums, structs, the/an
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| Deletions are marked like this. | Additions are marked like this. |
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| int SDL_SetSurfaceBlendMode(SDL_Surface* surface, int blendMode) |
int SDL_SetSurfaceBlendMode(SDL_Surface* surface, SDL_BlendMode blendMode) |
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| ||'''surface'''||the surface to update|| ||'''blendMode'''||[[SDL_BlendMode]] to use for blit blending|| |
||'''surface'''||the [[SDL_Surface]] structure to update|| ||'''blendMode'''||the [[SDL_BlendMode]] ,,enumeration,, ^value^ to use for blit blending; see [[#Remarks|Remarks]] for details|| |
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| Returns 0 on success, or -1 if the parameters are not valid; call [[SDL_GetError]]() for more information. | Returns 0 on success or a negative error code on failure; call [[SDL_GetError]]() for more information. |
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| ''You can add useful comments here'' | '''blendMode''' may be SDL_BLENDMODE_NONE or a mask of any of the other [[SDL_BlendMode]] values OR'd together: <<Include(SDL_BlendMode, , , from="== Values ==", to="== Code Examples ==")>> |
DRAFT |
SDL_SetSurfaceBlendMode
Use this function to set the blend mode used for blit operations.
Contents
Syntax
int SDL_SetSurfaceBlendMode(SDL_Surface* surface,
SDL_BlendMode blendMode)
Function Parameters
surface |
the SDL_Surface structure to update |
blendMode |
the SDL_BlendMode enumeration value to use for blit blending; 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 may be SDL_BLENDMODE_NONE or a mask of any of the other SDL_BlendMode values OR'd together:
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 |
