Mon 21 Jul 22:43:21 CEST 2025
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js/x11/core/ext/glx.js
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325
js/x11/core/ext/glx.js
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/*
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second extension to try
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links to get started:
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http://cgit.freedesktop.org/xcb/proto/tree/src/glx.xml?id=HEAD
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http://cgit.freedesktop.org/mesa/mesa/tree/src/glx
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http://cgit.freedesktop.org/mesa/mesa/tree/src/glx/indirect.c
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http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX)
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https://github.com/xderoche/J11/blob/master/src/gnu/x11/extension/glx/GL.java
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*/
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var x11 = Require('x11/core/x11');
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// TODO: move to templates
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exports.requireExt = function(display, callback)
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{
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var X = display.client;
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X.QueryExtension('GLX', function(err, ext) {
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var constants = require('./glxconstants');
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for (var i in constants)
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ext[i] = constants[i];
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if (!ext.present)
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return callback(new Error('extension not available'));
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ext.QueryVersion = function(clientMaj, clientMin, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 7, 3, clientMaj, clientMin]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var res = buf.unpack('LL');
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return res;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.QueryServerString = function(screen, name, callback) {
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 19, 3, screen, name]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var len = buf.unpack('xxxxL')[0];
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return buf.toString().substring(24, 24+len*4);
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.CreateGLXPixmap = function(screen, visual, pixmap, glxpixmap) {
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X.seq_num++;
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X.pack_stream.pack('CCSLLLL', [ext.majorOpcode, 13, 5, screen, visual, pixmap, glxpixmap]);
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console.log('CreateGlxPix', X.seq_num);
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console.log(ext.majorOpcode, 13, 5, screen, visual, pixmap, glxpixmap);
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console.trace();
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X.pack_stream.flush();
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}
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ext.QueryExtensionsString = function(screen, callback) {
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 18, 2, screen]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var len = buf.unpack('xxxxL')[0];
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return buf.toString().substring(24, 24+len*4);
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},
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callback
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];
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X.pack_stream.flush();
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}
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// see __glXInitializeVisualConfigFromTags in mesa/src/glx/glxext.c
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//
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ext.GetVisualConfigs = function(screen, callback) {
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 14, 2, screen]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var res = buf.unpack('LL');
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var numConfigs = res[0];
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var numProps = res[1];
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var configs = new Array(numConfigs);
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var i,j;
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for (i=0; i < numConfigs; ++i) {
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var props = {}; //new Array(numProps);
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var names = 'visualID visualType rgbMode redBits greenBits blueBits alphaBits accumRedBits accumGreen accumBlueBits accumAlphaBits doubleBufferMode stereoMode rgbBits depthBits stencilBits numAuxBuffers level'.split(' ');
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for (var j=0; j < 18 && j < numProps; ++j) {
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props[names[j]] = buf.unpack('L', 24+(i*numProps +j)*4)[0];
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}
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// read tag + property
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configs[i] = props;
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}
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return configs;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.GetFBConfigs = function(screen, callback) {
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 21, 2, screen]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var res = buf.unpack('LL');
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var numConfigs = res[0];
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var numProps = res[1];
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var configs = new Array(numConfigs);
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var i,j;
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for (i=0; i < numConfigs; ++i) {
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var props = new Array(numProps);
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for (var j=0; j < numProps; ++j) {
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props[j] = buf.unpack('LL', 24+(i*numProps +j)*8);
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}
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configs[i] = props;
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}
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return configs;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.CreateContext = function(ctx, visual, screen, shareListCtx, isDirect)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLLLLCxxx', [ext.majorOpcode, 3, 6, ctx, visual, screen, shareListCtx, isDirect]);
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X.pack_stream.flush();
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}
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ext.SwapBuffers = function(ctx, drawable)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 11, 3, ctx, drawable]);
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X.pack_stream.flush();
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}
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ext.NewList = function(ctx, list, mode)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLLL', [ext.majorOpcode, 101, 4, ctx, list, mode]);
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X.pack_stream.flush();
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}
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ext.EndList = function(ctx)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 102, 2, ctx]);
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X.pack_stream.flush();
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}
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ext.GenLists = function(ctx, count, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 104, 3, ctx, count]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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return buf.unpack('L')[0];
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.GenTextures = function(ctx, count, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 145, 3, ctx, count]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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var format = Buffer(count);
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format.fill('L');
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return buf.unpack('xxxxxxxxxxxxxxxxxxxxxxxx' + format.toString());
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.IsTexture = function(ctx, texture, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 146, 3, ctx, texture]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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return buf.unpack('CCCCCCCCCCCCCCCCCCCCCCCCCC');
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.MakeCurrent = function(drawable, ctx, oldctx, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSLLL', [ext.majorOpcode, 5, 4, drawable, ctx, oldctx]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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return buf.unpack('L')[0];
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.Finish = function(ctx, callback)
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{
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X.seq_num++;
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 108, 2, ctx]);
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X.replies[X.seq_num] = [
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function(buf, opt) {
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return;
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},
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callback
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];
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X.pack_stream.flush();
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}
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ext.Render = function(ctx, data) {
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X.seq_num++;
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var length = 0;
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if (Buffer.isBuffer(data))
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length = 2+data.length/4;
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else if (Array.isArray(data)) {
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length = 2;
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for (var i=0; i < data.length; ++i)
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length += data[i].length/4;
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}
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X.pack_stream.pack('CCSL', [ext.majorOpcode, 1, length, ctx]);
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if (Buffer.isBuffer(data))
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X.pack_stream.write_queue.push(data);
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else if (Array.isArray(data))
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for (var i=0; i < data.length; ++i)
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X.pack_stream.write_queue.push(data[i]);
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else
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throw new Error('invalid data, expected buffer or buffers array', data);
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X.pack_stream.flush();
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}
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ext.VendorPrivate = function(ctx, code, data) {
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X.seq_num++;
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X.pack_stream.pack('CCSLL', [ext.majorOpcode, 16, 3+data.length/4, code, ctx]);
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X.pack_stream.write_queue.push(data);
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X.pack_stream.flush();
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}
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// 1330 - X_GLXvop_BindTexImageEXT
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// 1331 - X_GLXvop_ReleaseTexImageEXT
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ext.BindTexImage = function(ctx, drawable, buffer, attribs) {
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if (!attribs)
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attribs = [];
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var data = new Buffer(12 + attribs.length*4);
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data.writeUInt32LE(drawable, 0);
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data.writeUInt32LE(buffer, 4);
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data.writeUInt32LE(attribs.length, 8);
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for (var i=0; i < attribs.length; ++i)
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data.writeUint32LE(attribs.length, 12+i*4);
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ext.VendorPrivate(ctx, 1330, data);
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}
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ext.ReleaseTexImage = function(ctx, drawable, buffer) {
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var data = new Buffer(8);
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data.writeUint32LE(drawable, 0);
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data.writeUint32LE(buffer, 4);
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ext.VendorPrivate(ctx, 1331, data);
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}
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// VendorPrivateWithReply - opcode 17
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ext.RenderLarge = function(ctx, requestNum, requestTotal, data) {
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X.seq_num++;
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//var data = Buffer.concat(data);
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var padLength = 4 - data.length % 4;
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if (padLength == 4)
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padLength = 0;
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var length = 4 + (data.length+padLength) / 4;
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X.pack_stream.pack('CCSLSSL', [ext.majorOpcode, 2, length, ctx, requestNum, requestTotal, data.length]);
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X.pack_stream.write_queue.push(data);
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var pad = new Buffer(padLength);
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pad.fill(0);
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X.pack_stream.write_queue.push(pad);
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X.pack_stream.flush();
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}
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ext.renderPipeline = function(ctx) {
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return require('./glxrender')(this, ctx);
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}
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var errors = [
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"context",
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"contect state",
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"drawable",
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"pixmap",
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"context tag",
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"current window",
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"Render request",
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"RenderLarge request",
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"(unsupported) VendorPrivate request",
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"FB config",
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"pbuffer",
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"current drawable",
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"window"
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];
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errors.forEach(function(message, code) {
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X.errorParsers[ext.firstError + code] = function(err) {
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err.message = "GLX: Bad " + message;
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};
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});
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callback(null, ext);
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});
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}
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