384 lines
12 KiB
JavaScript
384 lines
12 KiB
JavaScript
// see http://cgit.freedesktop.org/mesa/mesa/tree/src/mapi/glapi/gen/gl_API.xml
|
|
|
|
var constants = Require('x11/core/ext/glxconstants');
|
|
|
|
var MAX_SMALL_RENDER=65536-16;
|
|
|
|
module.exports = function(GLX, ctx) {
|
|
buffers = [];
|
|
var currentLength = 0;
|
|
|
|
function commandBuffer(opcode, len) {
|
|
if (currentLength + len > MAX_SMALL_RENDER) {
|
|
render();
|
|
}
|
|
if (len > MAX_SMALL_RENDER)
|
|
throw Error('Buffer too big. Make sure you are using RenderLarge for large commands');
|
|
|
|
currentLength += len;
|
|
var res = Buffer(len);
|
|
res.writeUInt16LE(len, 0);
|
|
res.writeUInt16LE(opcode, 2);
|
|
return res;
|
|
}
|
|
|
|
function serialize0(opcode) {
|
|
buffers.push(commandBuffer(opcode, 4));
|
|
}
|
|
|
|
function serialize3fv(opcode, c1, c2, c3) {
|
|
var res = commandBuffer(opcode, 16);
|
|
res.writeFloatLE(c1, 4);
|
|
res.writeFloatLE(c2, 8);
|
|
res.writeFloatLE(c3, 12);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize4fv(opcode, c1, c2, c3, c4) {
|
|
var res = commandBuffer(opcode, 20);
|
|
res.writeFloatLE(c1, 4);
|
|
res.writeFloatLE(c2, 8);
|
|
res.writeFloatLE(c3, 12);
|
|
res.writeFloatLE(c4, 16);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize4i(opcode, c1, c2, c3, c4) {
|
|
var res = commandBuffer(opcode, 20);
|
|
res.writeInt32LE(c1, 4);
|
|
res.writeInt32LE(c2, 8);
|
|
res.writeInt32LE(c3, 12);
|
|
res.writeInt32LE(c4, 16);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize6d(opcode, d1, d2, d3, d4, d5, d6)
|
|
{
|
|
var res = commandBuffer(opcode, 52);
|
|
res.writeDoubleLE(d1, 4);
|
|
res.writeDoubleLE(d2, 12);
|
|
res.writeDoubleLE(d3, 20);
|
|
res.writeDoubleLE(d4, 28);
|
|
res.writeDoubleLE(d5, 36);
|
|
res.writeDoubleLE(d6, 44);
|
|
buffers.push(res);
|
|
};
|
|
|
|
function serialize2i(opcode, value1, value2) {
|
|
var res = commandBuffer(opcode, 12);
|
|
res.writeUInt32LE(value1, 4);
|
|
res.writeUInt32LE(value2, 8);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize1i(opcode, value) {
|
|
var res = commandBuffer(opcode, 8);
|
|
res.writeUInt32LE(value, 4);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize1f(opcode, value) {
|
|
var res = commandBuffer(opcode, 8);
|
|
res.writeFloatLE(value, 4);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize2f(opcode, f1, f2) {
|
|
var res = commandBuffer(opcode, 12);
|
|
res.writeFloatLE(f1, 4);
|
|
res.writeFloatLE(f2, 8);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize2i(opcode, i1, i2) {
|
|
var res = commandBuffer(opcode, 12);
|
|
res.writeUInt32LE(i1, 4);
|
|
res.writeUInt32LE(i2, 8);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize3i(opcode, i1, i2, i3) {
|
|
var res = commandBuffer(opcode, 16);
|
|
res.writeUInt32LE(i1, 4);
|
|
res.writeUInt32LE(i2, 8);
|
|
res.writeUInt32LE(i3, 12);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize2i1f(opcode, i1, i2, f1) {
|
|
var res = commandBuffer(opcode, 16);
|
|
res.writeUInt32LE(i1, 4);
|
|
res.writeUInt32LE(i2, 8);
|
|
res.writeFloatLE(f1, 12);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize2ifv(opcode, i1, i2, fv) {
|
|
var res = commandBuffer(opcode, 12 + fv.length*4);
|
|
res.writeUInt32LE(i1, 4);
|
|
res.writeUInt32LE(i2, 8);
|
|
for (var i=0; i < fv.length; ++i)
|
|
res.writeFloatLE(fv[i], 12+i*4);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function serialize2i4f(opcode, i1, i2, f1, f2, f3, f4) {
|
|
var res = commandBuffer(opcode, 28);
|
|
res.writeUInt32LE(i1, 4);
|
|
res.writeUInt32LE(i2, 8);
|
|
res.writeFloatLE(f1, 12);
|
|
res.writeFloatLE(f2, 16);
|
|
res.writeFloatLE(f3, 20);
|
|
res.writeFloatLE(f4, 24);
|
|
buffers.push(res);
|
|
}
|
|
|
|
function render(ctxLocal) {
|
|
|
|
if (!ctxLocal) // ctxLocal overrides ctx passed during creation of renderContext
|
|
ctxLocal = ctx;
|
|
|
|
if (buffers.length == 0) {
|
|
buffers = [];
|
|
currentLength = 0;
|
|
return;
|
|
}
|
|
|
|
GLX.Render(ctxLocal, buffers);
|
|
buffers = [];
|
|
currentLength = 0;
|
|
}
|
|
|
|
var renderContext = {
|
|
Render: render,
|
|
Begin: function(what) {
|
|
serialize1i(4, what);
|
|
},
|
|
End: function() {
|
|
serialize0(23);
|
|
},
|
|
Ortho: function(left, right, bottom, top, znear, zfar) {
|
|
serialize6d(182, left, right, bottom, top, znear, zfar);
|
|
},
|
|
Frustum: function(left, right, bottom, top, znear, zfar) {
|
|
serialize6d(182, left, right, bottom, top, znear, zfar);
|
|
},
|
|
PopMatrix: function() {
|
|
serialize0(183);
|
|
|
|
},
|
|
PushMatrix: function() {
|
|
serialize0(184);
|
|
},
|
|
LoadIdentity: function() {
|
|
serialize0(176);
|
|
},
|
|
Rotatef: function(a, x, y, z) {
|
|
serialize4fv(186, a, x, y, z);
|
|
},
|
|
CallList: function(list) {
|
|
serialize1i(1, list);
|
|
},
|
|
Viewport: function(x, y, w, h) {
|
|
serialize4i(191, x, y, w, h); // TODO: x,y - signed, w,h - unsigned (currently all 4 unsigned)
|
|
},
|
|
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);
|
|
},
|
|
Scalef: function(x, y, z) {
|
|
serialize3fv(188, x, y, z);
|
|
},
|
|
Translatef: function(x, y, z) {
|
|
serialize3fv(190, x, y, z);
|
|
},
|
|
ClearColor: function(r, g, b, a) {
|
|
serialize4fv(0x82, r, g, b, a);
|
|
},
|
|
MatrixMode: function(mode) {
|
|
serialize1i(179, mode);
|
|
},
|
|
Enable: function(value) {
|
|
serialize1i(139, value);
|
|
},
|
|
Lightfv: function(light, name, p1, p2, p3, p4) {
|
|
if (p1.length)
|
|
serialize2i4f(87, light, name, p1[0], p1[1], p1[2], p1[3]);
|
|
else
|
|
serialize2i4f(87, light, name, p1, p2, p3, p4);
|
|
},
|
|
Materialfv: function(light, name, p1, p2, p3, p4) {
|
|
if (p1.length)
|
|
serialize2i4f(97, light, name, p1[0], p1[1], p1[2], p1[3]);
|
|
else
|
|
serialize2i4f(97, light, name, p1, p2, p3, p4);
|
|
},
|
|
Clear: function(mask) {
|
|
serialize1i(0x7f, mask);
|
|
},
|
|
ShadeModel: function(model) {
|
|
serialize1i(104, model);
|
|
},
|
|
BlendFunc: function(sfactor, dfactor) {
|
|
serialize2i(160, sfactor, dfactor);
|
|
},
|
|
PointSize: function(r) {
|
|
serialize1f(100, r);
|
|
},
|
|
Hint: function(target, mode) {
|
|
serialize2i(85, target, mode);
|
|
},
|
|
BindTexture: function(target, texture) {
|
|
serialize2i(4117, target, texture);
|
|
},
|
|
TexEnvf: function(target, pname, param) {
|
|
serialize2i1f(112, target, pname, param);
|
|
},
|
|
TexParameterf: function(target, pname, param) {
|
|
serialize2i1f(105, target, pname, param);
|
|
},
|
|
TexParameterfv: function(target, pname, param) {
|
|
serialize2ifv(106, target, pname, param);
|
|
},
|
|
TexParameteri: function(target, pname, param) {
|
|
serialize3i(107, target, pname, param);
|
|
},
|
|
TexImage2D: function(target, level, internalFormat, width, height, border, format, type, data) {
|
|
|
|
render();
|
|
|
|
var typeSize = [];
|
|
typeSize[constants.FLOAT] = 4;
|
|
typeSize[constants.BYTE] = 1;
|
|
typeSize[constants.UNSIGNED_BYTE] = 1;
|
|
|
|
var res = new Buffer(60 + data.length*typeSize[type]);
|
|
res.writeUInt32LE(res.length, 0);
|
|
res.writeUInt32LE(110, 4);
|
|
|
|
res[8] = 0; // swapbytes
|
|
res[9] = 0; // lsbfirst
|
|
res.writeUInt16LE(0, 10); // unused
|
|
|
|
/*
|
|
defaults: (from http://stackoverflow.com/questions/21563590/glteximage2d-protocol-arguments?noredirect=1#comment32577251_21563590 )
|
|
|
|
GL_UNPACK_SWAP_BYTES boolean false true or false
|
|
GL_UNPACK_LSB_FIRST boolean false true or false
|
|
GL_UNPACK_ROW_LENGTH integer 0 [0,oo)
|
|
GL_UNPACK_SKIP_ROWS integer 0 [0,oo)
|
|
GL_UNPACK_SKIP_PIXELS integer 0 [0,oo)
|
|
GL_UNPACK_ALIGNMENT integer 4 1, 2, 4, or 8
|
|
|
|
*/
|
|
|
|
res.writeUInt32LE(0, 12); // rowlength
|
|
res.writeUInt32LE(0, 16); // skiprows
|
|
res.writeUInt32LE(0, 20); // skippixels
|
|
res.writeUInt32LE(4, 24); // alignment
|
|
|
|
res.writeUInt32LE(target, 28);
|
|
res.writeUInt32LE(level, 32);
|
|
res.writeUInt32LE(internalFormat, 36);
|
|
res.writeUInt32LE(width, 40);
|
|
res.writeUInt32LE(height, 44);
|
|
res.writeUInt32LE(border, 48);
|
|
res.writeUInt32LE(format, 52);
|
|
res.writeUInt32LE(type, 56);
|
|
|
|
switch(type) {
|
|
case constants.FLOAT:
|
|
for (var i=0; i < data.length; ++i)
|
|
res.writeFloatLE(data[i], 60+i*typeSize[type]);
|
|
break;
|
|
case constants.BYTE:
|
|
case constants.UNSIGNED_BYTE:
|
|
for (var i=0; i < data.length; ++i)
|
|
res[60+i] = data[i];
|
|
break;
|
|
default:
|
|
throw new Error('unsupported texture type:' + type);
|
|
}
|
|
|
|
// bake sure buffer for glxRender request is emptied first
|
|
render();
|
|
|
|
var dataLen = res.length;
|
|
var maxSize = 262124;
|
|
var totalRequests = 1 + parseInt(dataLen / maxSize) - 1;
|
|
if (dataLen % maxSize)
|
|
totalRequests++;
|
|
|
|
// for some reason RenderLarge does not like everything to be sent in one go
|
|
// add one extra buffer request for small requests
|
|
if (dataLen < maxSize) {
|
|
GLX.RenderLarge(ctx, 1, 2, res);
|
|
GLX.RenderLarge(ctx, 2, 2, Buffer(0));
|
|
return;
|
|
}
|
|
|
|
var pos = 0;
|
|
var reqNum = 1;
|
|
while(dataLen > 0) {
|
|
if (dataLen < maxSize) {
|
|
GLX.RenderLarge(ctx, reqNum, totalRequests, res.slice(pos));
|
|
break;
|
|
} else {
|
|
GLX.RenderLarge(ctx, reqNum, totalRequests, res.slice(pos, pos + maxSize));
|
|
pos += maxSize;
|
|
dataLen -= maxSize;
|
|
reqNum++;
|
|
}
|
|
}
|
|
|
|
},
|
|
|
|
ProgramString: function(target, format, src) {
|
|
serialize3i(target, format, src);
|
|
buffers.push(Buffer(src));
|
|
},
|
|
|
|
BindProgram: function(target, program) {
|
|
serialize2i(target, format, src);
|
|
},
|
|
|
|
|
|
|
|
TexCoord2f: function(x, y) {
|
|
serialize2f(54, x, y);
|
|
}
|
|
};
|
|
|
|
// import all constants
|
|
for (var c in constants)
|
|
renderContext[c] = constants[c];
|
|
|
|
// bind some glx functions
|
|
'NewList EndList GenLists GenTextures IsTexture SwapBuffers Finish'.split(' ').forEach(function(name) {
|
|
// 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) {
|
|
render();
|
|
GLX[name](ctx, p1, p2, p3, p4, p5, p6, p7, p8);
|
|
}
|
|
});
|
|
|
|
return renderContext;
|
|
}
|