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Automatically send Render buffer if too large or before any GLX call

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This commit is contained in:
Andrey Sidorov 2012-12-20 00:55:31 +11:00
parent a951aa26cb
commit 8e833145ab
1 changed files with 39 additions and 7 deletions
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46
lib/x11/ext/glxrender.js
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@ -2,10 +2,24 @@
var constants = require('./glxconstants');
var MAX_SMALL_RENDER=65000;
module.exports = function(GLX, ctx) {
buffers = [];
var currentLength = 0;
function commandBuffer(opcode, len) {
if (currentLength + len > MAX_SMALL_RENDER) {
console.log("Flushing buffer ", currentLength);
render();
}
if (len > MAX_SMALL_RENDER)
{
throw Error('Buffer too big. Please implement RenderLarge request');
// renderLarge();
}
currentLength += len;
var res = Buffer(len);
res.writeUInt16LE(len, 0);
res.writeUInt16LE(opcode, 2);
@ -91,13 +105,17 @@ module.exports = function(GLX, ctx) {
buffers.push(res);
}
function render(ctxLocal) {
if (!ctxLocal) // ctxLocal overrides ctx passed during creation of renderContext
ctxLocal = ctx;
console.log("render called");
GLX.Render(ctxLocal, buffers);
buffers = [];
currentLength = 0;
}
var renderContext = {
render: function(ctxLocal) {
if (!ctxLocal) // ctxLocalOverrides ctx passed during creation of renderContext
ctxLocal = ctx;
GLX.Render(ctx, buffers);
buffers = [];
},
Render: render,
Begin: function(what) {
serialize1i(4, what);
},
@ -132,12 +150,18 @@ module.exports = function(GLX, ctx) {
Vertex3f: function(x, y, z) {
serialize3fv(70, x, y, z);
},
Vertex3fv: function(v) {
serialize3fv(70, v[0], v[1], v[2]);
},
Color3f: function(r, g, b) {
serialize3fv(8, r, g, b);
},
Normal3f: function(x, y, z) {
serialize3fv(30, x, y, z);
},
Normal3fv: function(v) {
serialize3fv(70, v[0], v[1], v[2]);
},
Color4f: function(r, g, b, a) {
serialize4fv(16, r, g, b, a);
},
@ -191,7 +215,15 @@ module.exports = function(GLX, ctx) {
// bind some glx functions
'NewList EndList GenLists SwapBuffers Finish'.split(' ').forEach(function(name) {
renderContext[name] = GLX[name].bind(GLX, ctx);
// todo: small camelCase ? to be consistent with webgl api
//renderContext[name] = GLX[name].bind(GLX, ctx);
// flush render buffer before glx requests
renderContext[name] = function(p1, p2, p3, p4, p5, p6, p7, p8) {
console.log(name);
renderContext.render();
GLX[name](ctx, p1, p2, p3, p4, p5, p6, p7, p8);
}
});
return renderContext;