mirror of
https://github.com/danbulant/node-x11
synced 2026-06-10 10:11:03 +00:00
glx extension and glxRender-encoded commands
This commit is contained in:
Andrey Sidorov
parent
c92cb57bb2
commit
10fef2fe9a
3 changed files with 379 additions and 1 deletions
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@ -8,4 +8,199 @@
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http://www.opengl.org/wiki/Tutorial:_OpenGL_3.0_Context_Creation_(GLX)
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*/
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*/
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var x11 = require('..');
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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.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.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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// glClearColor ( 0, 0.5, 1, 1 ); glClear ( GL_COLOR_BUFFER_BIT );
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// xtrace: render commands={command=ClearColor(0x0082) unknown=0x00,0x00,0x80,0x3f,0x00,0x00,0x00,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x3f;},{command=Clear(0x007f) mask=0x00004000 };
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// (context 0300 4004) (1400 8200 0000 803f 0000 003f 0000 0000 0000 803f) (0800 7f00 0040 0000)
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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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//console.log(data);
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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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//console.log('LENGTH: ', length);
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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.renderPipeline = function() {
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return require('./glxrender')(this);
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}
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callback(ext);
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});
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}
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51
lib/x11/ext/glxconstants.js
Normal file
51
lib/x11/ext/glxconstants.js
Normal file
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@ -0,0 +1,51 @@
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module.exports = {
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//
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LIGHT0: 0x4000,
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// glEnable
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POSITION: 0x1203,
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CULL_FACE: 0x0B44,
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LIGHTING: 0x0B50,
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DEPTH_TEST: 0x0B71,
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NORMALIZE: 0x0BA1,
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// glShadeModel
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FLAT: 0x1D00,
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SMOOTH: 0x1D01,
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//
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TRUE: 1,
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FALSE: 0,
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// glBegin
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POINTS: 0x0000,
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LINES: 0x0001,
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LINE_LOOP: 0x0002,
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LINE_STRIP: 0x0003,
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TRIANGLES: 0x0004,
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TRIANGLES_STRIP: 0x0005,
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TRIANGLES_FAN: 0x0006,
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QUADS: 0x0007,
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QUAD_STRIP: 0x0008,
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POLYGON: 0x0009,
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// glClear
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COLOR_BUFFER_BIT: 0x00004000,
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DEPTH_BUFFER_BIT: 0x00000100,
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// glMatrixMode
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PROJECTION: 0x1701,
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MODELVIEW: 0x1700,
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// glMaterial
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FRONT: 0x0404,
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AMBIENT_AND_DIFFUSE: 0x1602,
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COMPILE: 0x1300,
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// glGetString
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RENDERER: 0x1F01,
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VERSION: 0x1F02,
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VENDOR: 0x1F00,
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EXTENSIONS: 0x1F03
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}
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132
lib/x11/ext/glxrender.js
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132
lib/x11/ext/glxrender.js
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@ -0,0 +1,132 @@
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// see http://cgit.freedesktop.org/mesa/mesa/tree/src/mapi/glapi/gen/gl_API.xml
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module.exports = function(GLX) {
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buffers = [];
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function commandBuffer(opcode, len) {
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var res = Buffer(len);
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res.writeUInt16LE(len, 0);
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res.writeUInt16LE(opcode, 2);
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return res;
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}
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function serialize0(opcode) {
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buffers.push(commandBuffer(opcode, 4));
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}
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function serialize3fv(opcode, c1, c2, c3) {
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var res = commandBuffer(opcode, 16);
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res.writeFloatLE(c1, 4);
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res.writeFloatLE(c2, 8);
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res.writeFloatLE(c3, 12);
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buffers.push(res);
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}
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function serialize4fv(opcode, c1, c2, c3, c4) {
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var res = commandBuffer(opcode, 20);
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res.writeFloatLE(c1, 4);
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res.writeFloatLE(c2, 8);
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res.writeFloatLE(c3, 12);
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res.writeFloatLE(c4, 16);
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buffers.push(res);
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}
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function serialize4i(opcode, c1, c2, c3, c4) {
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var res = commandBuffer(opcode, 20);
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res.writeInt32LE(c1, 4);
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res.writeInt32LE(c2, 8);
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res.writeInt32LE(c3, 12);
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res.writeInt32LE(c4, 16);
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buffers.push(res);
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}
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function serialize6d(opcode, d1, d2, d3, d4, d5, d6)
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{
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var res = commandBuffer(opcode, 52);
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res.writeDoubleLE(d1, 4);
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res.writeDoubleLE(d2, 12);
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res.writeDoubleLE(d3, 20);
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res.writeDoubleLE(d4, 28);
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res.writeDoubleLE(d5, 36);
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res.writeDoubleLE(d6, 44);
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buffers.push(res);
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};
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function serialize1i(opcode, value) {
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var res = commandBuffer(opcode, 8);
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res.writeUInt32LE(value, 4);
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buffers.push(res);
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}
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return {
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render: function(ctx) {
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GLX.Render(ctx, buffers);
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buffers = [];
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},
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Begin: function(what) {
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serialize1i(4, what);
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},
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End: function() {
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serialize0(23);
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},
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Ortho: function(left, right, bottom, top, znear, zfar) {
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serialize6d(182, left, right, bottom, top, znear, zfar);
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},
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Frustum: function(left, right, bottom, top, znear, zfar) {
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serialize6d(182, left, right, bottom, top, znear, zfar);
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},
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PopMatrix: function() {
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serialize0(183);
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},
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PushMatrix: function() {
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serialize0(184);
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},
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LoadIdentity: function() {
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serialize0(176);
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},
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Rotatef: function(a, x, y, z) {
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serialize4fv(186, a, x, y, z);
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},
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CallList: function(list) {
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serialize1i(1, list);
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},
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Viewport: function(x, y, w, h) {
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serialize4i(191, x, y, w, h); // TODO: x,y - signed, w,h - unsigned (currently all 4 unsigned)
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},
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Vertex3f: function(x, y, z) {
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serialize3fv(70, x, y, z);
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},
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Color3f: function(r, g, b) {
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serialize3fv(8, r, g, b);
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},
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Color4f: function(r, g, b, a) {
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serialize4fv(16, r, g, b, a);
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},
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Scalef: function(x, y, z) {
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serialize3fv(188, x, y, z);
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},
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Translatef: function(x, y, z) {
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serialize3fv(190, x, y, z);
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},
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ClearColor: function(r, g, b, a) {
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serialize4fv(0x82, r, g, b, a);
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},
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MatrixMode: function(mode) {
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serialize1i(179, mode);
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},
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Enable: function(value) {
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serialize1i(139, value);
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},
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Lightfv: function(light, name, p1, p2, p3, p4) {
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seralize2i4f(87, light, name, p1, p2, p3, p4);
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},
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Clear: function(mask) {
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serialize1i(0x7f, mask);
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},
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ShadeModel: function(model) {
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serialize1i(104, model);
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},
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};
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}
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