Differences between revisions 14 and 15

SDL_BlendMode

An enumeration of blend modes used in SDL_RenderCopy() and drawing operations.

Contents

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

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-  ⇤ ← Revision 14 as of 2011-07-02 00:47:33 → 
  Size: 954
  Editor: SheenaSmith
  Comment: notes for me
+   ← Revision 15 as of 2013-08-08 20:57:51 → ⇥
  Size: 1168
  Editor: Sam Lantinga
  Comment: Updated blending formulas
-Deletions are marked like this.
+Additions are marked like this.
 Line 11:
-||SDL_BLENDMODE_BLEND||dst = (src * A) + (dst * (1-A))||
||SDL_BLENDMODE_ADD||dst = (src * A) + dst||
||SDL_BLENDMODE_MOD||dst = src * dst||
+|| ||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||