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Updated documentation for SDL_migration.cocci 

Especially note that this can be installed and run in WSL on Windows
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Sam Lantinga 2023-01-10 07:53:38 -08:00
parent c4b471bd13
commit 69b94145d3
1 changed files with 13 additions and 23 deletions
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build-scripts/SDL_migration.cocci
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//
// This is a coccinelle semantic patch to ease migration of your project from SDL2 to SDL3.
//
// This is a coccinelle semantic patch (https://github.com/coccinelle/coccinelle)
// to ease migration of your project, from SDL2 to SDL3.
// It generates a patch that you can apply to your project to build for SDL3. It does not
// handle conceptual API changes, but it automates API name changes and function parameter
// transformations.
//
// It generates a 'diff' of your SDL2 project, that you can apply
// to build for SDL3.
//
// To install (native Ubuntu or using WSL on Windows):
// sudo apt install coccinelle
//
// install:
// $> apt-get install coccinelle
//
// apply the semantic patch to generate a diff file:
// $> spatch --sp-file path/to/SDL_migration.cocci . > your_diff.txt
// Apply the semantic patch to generate a patch file:
// cd path/to/your/code
// spatch --sp-file path/to/SDL_migration.cocci . >patch.txt
//
// A few options:
// --c++=11 to parse cpp file
// --max-width 200 to increase line witdth of generated source
//
// patch you project (make a copy before..):
// $> patch -p1 < your_diff.txt
//
// Apply the patch to your project:
// patch -p1 <patch.txt
//
//
// #############
// What it does ?
// - all function renaming (without parameter change) as in SDL_oldnames.h
// - remove SDL_WINDOW_SHOWN
// - migrate SDL_CreateRGB* and SDL_ConvertSurface* functions
//
// #############
// In very short, a patch is composed of two sub-blocks, like
// In very short, a semantic patch is composed of two sub-blocks, like
//
// @@
// declaration
// @@
// rule / transformation
//
// So this file, is a set of many patches, mostly independant.
// it can be incremented by inserting new patches as SDL3 api evolves.
//
// So this file is a set of many semantic patches, mostly independant.
// SDL_PauseAudioDevice / SDL_PlayAudioDevice