Blend Modes (Guile-SDL2)

From 25c5eac5e6ca1035db1eddd7bea9ac78531da57e Mon Sep 17 00:00:00 2001 From: David Thompson Date: Thu, 28 Dec 2023 11:23:49 -0500 Subject: Delete manuals! Good riddance! These are hosted on files.dthompson.us now! --- manuals/guile-sdl2/Blend-Modes.html | 203 ------------------------------------ 1 file changed, 203 deletions(-) delete mode 100644 manuals/guile-sdl2/Blend-Modes.html (limited to 'manuals/guile-sdl2/Blend-Modes.html') diff --git a/manuals/guile-sdl2/Blend-Modes.html b/manuals/guile-sdl2/Blend-Modes.html deleted file mode 100644 index 55363a4..0000000 --- a/manuals/guile-sdl2/Blend-Modes.html +++ /dev/null @@ -1,203 +0,0 @@ - - - - - - -Blend Modes (Guile-SDL2) - - - - - - - - - - - - - - - - - - - - -

3.8 Blend Modes

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(use-modules (sdl2 blend-mode))
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SDL2 provides several of the most commonly used blend modes: -

Variable: none: No blending. -

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Variable: blend: Alpha blending. -

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Variable: add: Additive blending. -

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Variable: mul: Multiplicative blending. -

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Variable: mod: Color modulation. -

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Custom blend modes can be created using the make-blend-mode -procedure. -

Procedure: make-blend-mode src-color-factor dst-color-factor color-operation src-alpha-factor dst-alpha-factor alpha-operation

Return a new custom blend mode for renderers. -

src-color-factor applies to the red, green, and blue components -of the source pixels. -

dst-color-factor applies to the red, green, and blue components of the -destination pixels. -

color-operation specifies how to combine the red, green, and blue -components of the source and destination pixels. -

src-alpha-factor applies to the alpha component of the source pixels. -

dst-alpha-factor applies to the alpha component of the destination -pixels. -

alpha-operation specifies how to combine the alpha component of the -source and destination pixels. -

Possible values for factors are zero, one, -src-color, one-minus-src-color, src-alpha, -one-minus-src-alpha, dst-color, -one-minus-dst-color, dst-alpha, and one-minus-dst -alpha. -

Possible values for operations are add, subtract, -rev-subtract, minimum, and maximum. -

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Procedure: blend-mode? obj: Return #t if obj is a blend mode object. -

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Procedure: blend-mode-src-color-factor blend-mode: Return the source red, green, and blue channel blend factor for -blend-mode. -

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Procedure: blend-mode-dst-color-factor blend-mode: Return the destination red, green, and blue channel blend factor for -blend-mode. -

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Procedure: blend-mode-color-operation blend-mode: Return the red, green, and blue channel blend operation for -blend-mode. -

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Procedure: blend-mode-src-alpha-factor blend-mode: Return the source alpha channel blend factor for blend-mode. -

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Procedure: blend-mode-dst-alpha-factor blend-mode: Return the destination alpha channel blend factor for -blend-mode. -

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Procedure: blend-mode-alpha-operation blend-mode: Return the alpha channel blend operation for blend-mode. -

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