Файл SDL_blendmode.h

См. исходные тексты.

Перечисления
enum	SDL_BlendMode {   SDL_BLENDMODE_NONE = 0x00000000, SDL_BLENDMODE_BLEND = 0x00000001, SDL_BLENDMODE_ADD = 0x00000002, SDL_BLENDMODE_MOD = 0x00000004,   SDL_BLENDMODE_MUL = 0x00000008, SDL_BLENDMODE_INVALID = 0x7FFFFFFF }
	The blend mode used in SDL_RenderCopy() and drawing operations. Подробнее...
enum	SDL_BlendOperation {   SDL_BLENDOPERATION_ADD = 0x1, SDL_BLENDOPERATION_SUBTRACT = 0x2, SDL_BLENDOPERATION_REV_SUBTRACT = 0x3, SDL_BLENDOPERATION_MINIMUM = 0x4,   SDL_BLENDOPERATION_MAXIMUM = 0x5 }
	The blend operation used when combining source and destination pixel components. Подробнее...
enum	SDL_BlendFactor {   SDL_BLENDFACTOR_ZERO = 0x1, SDL_BLENDFACTOR_ONE = 0x2, SDL_BLENDFACTOR_SRC_COLOR = 0x3, SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4,   SDL_BLENDFACTOR_SRC_ALPHA = 0x5, SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6, SDL_BLENDFACTOR_DST_COLOR = 0x7, SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8,   SDL_BLENDFACTOR_DST_ALPHA = 0x9, SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA }
	The normalized factor used to multiply pixel components. Подробнее...

Функции
DECLSPEC SDL_BlendMode SDLCALL	SDL_ComposeCustomBlendMode (SDL_BlendFactor srcColorFactor, SDL_BlendFactor dstColorFactor, SDL_BlendOperation colorOperation, SDL_BlendFactor srcAlphaFactor, SDL_BlendFactor dstAlphaFactor, SDL_BlendOperation alphaOperation)
	Create a custom blend mode, which may or may not be supported by a given renderer. Подробнее...

Подробное описание

Header file declaring the SDL_BlendMode enumeration

См. определение в файле SDL_blendmode.h

Перечисления

SDL_BlendMode

enum SDL_BlendMode

The blend mode used in SDL_RenderCopy() and drawing operations.

Элементы перечислений
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
SDL_BLENDMODE_MUL	color multiply dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA)) dstA = (srcA * dstA) + (dstA * (1-srcA))
SDL_BLENDMODE_INVALID

См. определение в файле SDL_blendmode.h строка 40

{
    SDL_BLENDMODE_NONE = 0x00000000,     
    SDL_BLENDMODE_BLEND = 0x00000001,    
    SDL_BLENDMODE_ADD = 0x00000002,      
    SDL_BLENDMODE_MOD = 0x00000004,      
    SDL_BLENDMODE_MUL = 0x00000008,      
    SDL_BLENDMODE_INVALID = 0x7FFFFFFF
 
    /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */
 
} SDL_BlendMode;

SDL_BlendOperation

enum SDL_BlendOperation

The blend operation used when combining source and destination pixel components.

Элементы перечислений
SDL_BLENDOPERATION_ADD	dst + src: supported by all renderers
SDL_BLENDOPERATION_SUBTRACT	dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES
SDL_BLENDOPERATION_REV_SUBTRACT	src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES
SDL_BLENDOPERATION_MINIMUM	min(dst, src) : supported by D3D11
SDL_BLENDOPERATION_MAXIMUM	max(dst, src) : supported by D3D11

См. определение в файле SDL_blendmode.h строка 65

{
    SDL_BLENDOPERATION_ADD              = 0x1,  
    SDL_BLENDOPERATION_SUBTRACT         = 0x2,  
    SDL_BLENDOPERATION_REV_SUBTRACT     = 0x3,  
    SDL_BLENDOPERATION_MINIMUM          = 0x4,  
    SDL_BLENDOPERATION_MAXIMUM          = 0x5   
} SDL_BlendOperation;

SDL_BlendFactor

enum SDL_BlendFactor

The normalized factor used to multiply pixel components.

Элементы перечислений
SDL_BLENDFACTOR_ZERO	0, 0, 0, 0
SDL_BLENDFACTOR_ONE	1, 1, 1, 1
SDL_BLENDFACTOR_SRC_COLOR	srcR, srcG, srcB, srcA
SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR	1-srcR, 1-srcG, 1-srcB, 1-srcA
SDL_BLENDFACTOR_SRC_ALPHA	srcA, srcA, srcA, srcA
SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA	1-srcA, 1-srcA, 1-srcA, 1-srcA
SDL_BLENDFACTOR_DST_COLOR	dstR, dstG, dstB, dstA
SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR	1-dstR, 1-dstG, 1-dstB, 1-dstA
SDL_BLENDFACTOR_DST_ALPHA	dstA, dstA, dstA, dstA
SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA	1-dstA, 1-dstA, 1-dstA, 1-dstA

См. определение в файле SDL_blendmode.h строка 78

{
    SDL_BLENDFACTOR_ZERO                = 0x1,  
    SDL_BLENDFACTOR_ONE                 = 0x2,  
    SDL_BLENDFACTOR_SRC_COLOR           = 0x3,  
    SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4,  
    SDL_BLENDFACTOR_SRC_ALPHA           = 0x5,  
    SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6,  
    SDL_BLENDFACTOR_DST_COLOR           = 0x7,  
    SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8,  
    SDL_BLENDFACTOR_DST_ALPHA           = 0x9,  
    SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA   
} SDL_BlendFactor;

Функции

SDL_ComposeCustomBlendMode()

DECLSPEC SDL_BlendMode SDLCALL SDL_ComposeCustomBlendMode	(	SDL_BlendFactor	srcColorFactor,
		SDL_BlendFactor	dstColorFactor,
		SDL_BlendOperation	colorOperation,
		SDL_BlendFactor	srcAlphaFactor,
		SDL_BlendFactor	dstAlphaFactor,
		SDL_BlendOperation	alphaOperation
	)

Create a custom blend mode, which may or may not be supported by a given renderer.

Аргументы

srcColorFactor	source color factor
dstColorFactor	destination color factor
colorOperation	color operation
srcAlphaFactor	source alpha factor
dstAlphaFactor	destination alpha factor
alphaOperation	alpha operation

The result of the blend mode operation will be: dstRGB = dstRGB * dstColorFactor colorOperation srcRGB * srcColorFactor and dstA = dstA * dstAlphaFactor alphaOperation srcA * srcAlphaFactor