1 files changed, 47 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/deqp/data/gles3/shaders/split-swizzles.js b/dom/canvas/test/webgl-conf/checkout/deqp/data/gles3/shaders/split-swizzles.js
new file mode 100644
index 0000000000..7205d82afd
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/deqp/data/gles3/shaders/split-swizzles.js
@@ -0,0 +1,47 @@
+/*
+
+run with
+   node split-swizzles.js
+
+notes:
+
+swizzles.test is generated from the C++ based dEQP tests
+https://github.com/KhronosGroup/VK-GL-CTS/blob/main/modules/gles3/scripts/gen-swizzles.py
+
+You need to manually add these tests to the 00_test_list.txt
+
+*/
+
+const fs = require('fs');
+
+process.chdir(__dirname);
+
+const testWarning = `\
+# WARNING: This file is auto-generated. Do NOT modify it manually, but rather
+# modify the generating script file. Otherwise changes will be lost!
+# See split-swizzles.js
+
+`;
+
+const swizzlesHTML = fs.readFileSync('swizzles.template', {encoding: 'utf8'});
+const swizzles = fs.readFileSync('swizzles.test', {encoding: 'utf8'});
+const caseMatches = swizzles.matchAll(/\scase (\w+)_(\w+)_(\w+)\n[\s\S]+?end\n/g);
+
+// quick sanity check
+const numCases = swizzles.matchAll('\bcase\b').length;
+if (caseMatches.length !== numCases) {
+  throw Error(`numCases(${numCases}) does not match caseMatches.length(${caseMatches.length})`);
+}
+
+const byType = {}
+for (const [str, precision, type, swizzle] of caseMatches) {
+  byType[type] = byType[type] || [];
+  byType[type].push(str);
+}
+
+for (const [type, cases] of Object.entries(byType)) {
+  const baseName = `swizzles_${type}`;
+  const str = `group ${type}_swizzles "${type} swizzles"\n\n${cases.join('\n\n')}\n\nend # ${type}_swizzles`;
+  fs.writeFileSync(`${baseName}.test`, `${testWarning}${str}`);
+  fs.writeFileSync(`${baseName}.html`, `<!--\n${testWarning}-->\n${swizzlesHTML.replace("'swizzles'", `'${baseName}'`)}`);
+}