72 lines
2.2 KiB
JavaScript
Executable File
72 lines
2.2 KiB
JavaScript
Executable File
#!/usr/bin/env node
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var path = require('path');
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var fs = require('fs');
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var mkdirp = require('mkdirp');
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var input_file = process.argv[2]
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var output_file = process.argv[3];
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if (!input_file || !output_file) {
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console.warn('No input or output file given.');
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console.warn('Usage: %s [input.vertex.glsl] [output.vertex.hpp]', path.basename(process.argv[1]));
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process.exit(1);
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}
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var components = path.basename(input_file).split('.');
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var shader_name = components[0];
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var shader_type = components[1];
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var extension = components[2];
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var data = fs.readFileSync(input_file, 'utf8');
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// Replace uniform pragmas
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var pragma_mapbox_regex = /(\s*)#pragma\s+mapbox\s*:\s+(define|initialize)\s+(low|medium|high)p\s+(float|vec(?:2|3|4))\s+(.*)/;
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var data = data.split('\n').map(function(line) {
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var params = line.match(pragma_mapbox_regex);
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if (params) {
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if (params[2] === 'define') {
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return params[1] + 'uniform ' + params[3] + 'p ' + params[4] + ' u_' + params[5] + ';';
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} else {
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return params[1] + params[3] + 'p ' + params[4] + ' ' + params[5] + ' = u_' + params[5] + ';';
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}
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} else {
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return line;
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}
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}).join('\n');
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var content =
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'#pragma once\n' +
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'\n' +
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'// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.\n' +
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'\n' +
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'#include <mbgl/gl/gl.hpp>\n' +
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'\n' +
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'namespace mbgl {\n' +
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'namespace shaders {\n' +
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'namespace ' + shader_name + ' {\n' +
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'\n' +
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'#ifndef MBGL_SHADER_NAME_' + shader_name.toUpperCase() + '\n' +
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'#define MBGL_SHADER_NAME_' + shader_name.toUpperCase() + '\n' +
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'constexpr const char* name = "' + shader_name + '";\n' +
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'#endif // MBGL_SHADER_NAME_' + shader_name.toUpperCase() + '\n' +
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'\n' +
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'constexpr const char* ' + shader_type + ' =\n' +
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'#ifdef GL_ES_VERSION_2_0\n' +
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' "precision highp float;"\n' +
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'#else\n' +
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' "#version 120"\n' +
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'#endif\n' +
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' R"MBGL_SHADER(\n' + data + ')MBGL_SHADER";\n' +
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'\n' +
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'} // namespace ' + shader_name + '\n' +
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'} // namespace shaders\n' +
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'} // namespace mbgl\n';
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mkdirp.sync(path.dirname(output_file));
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fs.writeFileSync(output_file, content);
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