|
Size: 1135
Comment: correct typo
|
Size: 1043
Comment: update content - w/ Sam
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 18: | Line 18: |
| ||'''blendMode'''||a pointer filled in with the current [[SDL_BlendMode]] ,,enumeration,, ^value^; see [[#Remarks|Remarks]] for details|| | ||'''blendMode'''||a pointer filled in with the current [[SDL_BlendMode]]; see [[#Remarks|Remarks]] for details|| |
| Line 29: | Line 29: |
| '''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 ==")>> | '''blendMode''' can be one of these values: <<Include(SDL_BlendMode, , , from="== Values ==", to="== Code Examples ==")>> |
DRAFT |
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 can be one of these values:
SDL_BLENDMODE_NONE |
no blending |
|
dstRGBA = srcRGBA |
SDL_BLENDMODE_BLEND |
alpha blending |
|
dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA)) |
|
dstA = srcA + (dstA * (1-srcA)) |
SDL_BLENDMODE_ADD |
additive blending |
|
dstRGB = (srcRGB * srcA) + dstRGB |
|
dstA = dstA |
SDL_BLENDMODE_MOD |
color modulate |
|
dstRGB = srcRGB * dstRGB |
|
dstA = dstA |
