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build shaders for either desktop gl or gles2

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This commit is contained in:
Konstantin Käfer
2014-03-25 13:16:48 +01:00
parent b4d5378bc7
commit 77f58960c4
6 changed files with 48 additions and 98 deletions
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22
bin/build-shaders.js
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@@ -7,7 +7,7 @@ var path = require('path');
var glsl;
try { glsl = require('glsl-optimizer'); } catch(err) {}
module.exports = function() {
module.exports = function(param) {
var name;
var shaders = {};
@@ -30,9 +30,21 @@ module.exports = function() {
// Optimize shader
if (glsl) {
var compiler = new glsl.Compiler(glsl.TARGET_OPENGLES20);
var preamble = '';
var target = glsl.TARGET_OPENGL;
if (param == 'gles2') {
target = glsl.TARGET_OPENGLES20;
preamble = 'precision highp float;';
} else if (param == 'gles3') {
target = glsl.TARGET_OPENGLES30;
preamble = 'precision highp float;';
} else {
preamble = '#version 120';
}
var compiler = new glsl.Compiler(target);
for (name in shaders) {
var vertex_shader = new glsl.Shader(compiler, glsl.VERTEX_SHADER, shaders[name].vertex);
var vertex_shader = new glsl.Shader(compiler, glsl.VERTEX_SHADER, preamble + '\n' + shaders[name].vertex);
if (vertex_shader.compiled()) {
shaders[name].vertex = vertex_shader.output();
} else {
@@ -41,7 +53,7 @@ module.exports = function() {
}
vertex_shader.dispose();
var fragment_shader = new glsl.Shader(compiler, glsl.FRAGMENT_SHADER, shaders[name].fragment);
var fragment_shader = new glsl.Shader(compiler, glsl.FRAGMENT_SHADER, preamble + '\n' + shaders[name].fragment);
if (fragment_shader.compiled()) {
shaders[name].fragment = fragment_shader.output();
} else {
@@ -107,4 +119,4 @@ module.exports = function() {
};
module.exports();
module.exports(process.argv[2]);