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Add missing blend enums #3

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Merged
merged 3 commits into from
Jul 30, 2020
Merged

Add missing blend enums #3

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c433b5b
Add the SDL_BlendOperation enum
suve Oct 7, 2019
6781b31
Add the SDL_BlendFactor enum
suve Oct 7, 2019
36c56c8
Add the SDL_ComposeCustomBlendMode() function
suve Oct 7, 2019
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45 changes: 45 additions & 0 deletions sdlblendmode.inc
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Original file line number Diff line number Diff line change
Expand Up @@ -13,3 +13,48 @@ const
SDL_BLENDMODE_BLEND = $00000001; {**< dst = (src * A) + (dst * (1-A)) *}
SDL_BLENDMODE_ADD = $00000002; {**< dst = (src * A) + dst *}
SDL_BLENDMODE_MOD = $00000004; {**< dst = src * dst *}

type
PSDL_BlendOperation = ^TSDL_BlendOperation;
TSDL_BlendOperation = DWord;

const
SDL_BLENDOPERATION_ADD = $1; {**< dst + src: supported by all renderers *}
SDL_BLENDOPERATION_SUBTRACT = $2; {**< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES}
SDL_BLENDOPERATION_REV_SUBTRACT = $3; {**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES}
SDL_BLENDOPERATION_MINIMUM = $4; {**< min(dst, src) : supported by D3D11 *}
SDL_BLENDOPERATION_MAXIMUM = $5; {**< max(dst, src) : supported by D3D11 *}

type
PSDL_BlendFactor = ^TSDL_BlendFactor;
TSDL_BlendFactor = DWord;

const
SDL_BLENDFACTOR_ZERO = $1; {**< 0, 0, 0, 0 *}
SDL_BLENDFACTOR_ONE = $2; {**< 1, 1, 1, 1 *}
SDL_BLENDFACTOR_SRC_COLOR = $3; {**< srcR, srcG, srcB, srcA *}
SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = $4; {**< 1-srcR, 1-srcG, 1-srcB, 1-srcA *}
SDL_BLENDFACTOR_SRC_ALPHA = $5; {**< srcA, srcA, srcA, srcA *}
SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = $6; {**< 1-srcA, 1-srcA, 1-srcA, 1-srcA *}
SDL_BLENDFACTOR_DST_COLOR = $7; {**< dstR, dstG, dstB, dstA *}
SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = $8; {**< 1-dstR, 1-dstG, 1-dstB, 1-dstA *}
SDL_BLENDFACTOR_DST_ALPHA = $9; {**< dstA, dstA, dstA, dstA *}
SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = $A; {**< 1-dstA, 1-dstA, 1-dstA, 1-dstA *}

{**
* \brief Create a custom blend mode, which may or may not be supported by a given renderer
*
* \param srcColorFactor source color factor
* \param dstColorFactor destination color factor
* \param colorOperation color operation
* \param srcAlphaFactor source alpha factor
* \param dstAlphaFactor destination alpha factor
* \param 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
*}
Function SDL_ComposeCustomBlendMode(srcColorFactor, dstColorFactor : TSDL_BlendFactor; colorOperation : TSDL_BlendOperation; srcAlphaFactor, dstAlphaFactor : TSDL_BlendFactor; alphaOperation : TSDL_BlendOperation) : TSDL_BlendMode cdecl;
external SDL_LibName {$IFDEF DELPHI} {$IFDEF MACOS} name '_SDL_ComposeCustomBlendMode' {$ENDIF} {$ENDIF};