bmx-site/docs/api/sdl/sdl_sdlsurface.md

---

id: sdl.sdlsurface title: SDL.SDLSurface

sidebar_label: Introduction

Types

Type	Description
TSDLSurface	A collection of pixels used in software blitting.

Consts

Const SDL_BLENDMODE_NONE:Int = $00000000

no blending

dstRGBA = srcRGBA

Const SDL_BLENDMODE_BLEND:Int = $00000001

alpha blending

dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))

dstA = srcA + (dstA * (1-srcA))

Const SDL_BLENDMODE_ADD:Int = $00000002

additive blending

dstRGB = (srcRGB * srcA) + dstRGB

dstA = dstA

Const SDL_BLENDMODE_MOD:Int = $00000004

color modulate

dstRGB = srcRGB * dstRGB

dstA = dstA

Const SDL_BLENDOPERATION_ADD:Int = $1

dst + src: supported by all renderers

Const SDL_BLENDOPERATION_SUBTRACT:Int = $2

dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES

Const SDL_BLENDOPERATION_REV_SUBTRACT:Int = $3

src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES

Const SDL_BLENDOPERATION_MINIMUM:Int = $4

min(dst, src) : supported by D3D11

Const SDL_BLENDOPERATION_MAXIMUM:Int = $5

max(dst, src) : supported by D3D11

Const SDL_BLENDFACTOR_ZERO:Int = $1

0, 0, 0, 0

Const SDL_BLENDFACTOR_ONE:Int = $2

1, 1, 1, 1

Const SDL_BLENDFACTOR_SRC_COLOR:Int = $3

srcR, srcG, srcB, srcA

Const SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR:Int = $4

1-srcR, 1-srcG, 1-srcB, 1-srcA

Const SDL_BLENDFACTOR_SRC_ALPHA:Int = $5

srcA, srcA, srcA, srcA

Const SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA:Int = $6

1-srcA, 1-srcA, 1-srcA, 1-srcA

Const SDL_BLENDFACTOR_DST_COLOR:Int = $7

dstR, dstG, dstB, dstA

Const SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR:Int = $8

1-dstR, 1-dstG, 1-dstB, 1-dstA

Const SDL_BLENDFACTOR_DST_ALPHA:Int = $9

dstA, dstA, dstA, dstA

Const SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA:Int = $A

1-dstA, 1-dstA, 1-dstA, 1-dstA