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Comment: update content (w/ Sam)
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Comment: update content - changeset 4929 BlendMode
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| Deletions are marked like this. | Additions are marked like this. |
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| int SDL_GetRenderDrawBlendMode(int* blendMode) | int SDL_GetRenderDrawBlendMode(SDL_BlendMode* blendMode) |
SDL_GetRenderDrawBlendMode
Use this function to get the blend mode used for drawing operations.
Contents
Syntax
int SDL_GetRenderDrawBlendMode(SDL_BlendMode* blendMode)
Function Parameters
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 may be any of the following values:
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 |
