c++ - Draw array of VBOs in OpenGL ES -

-

i have array of vertex array objects, each contain vbo reference, , and array of matrices, of same size, such as:

unsigned int vaoarray[128]; matrix_t matrixarray[128];

rather than

for (i = 0; < 128; i++) {     glbindvertexarray(vaoarray[i]);     gluniformmatrix4fv(u_mvp_matrix_slot, 1, gl_false, &matrixarray[i]);     gldrawarrays(bgl_triangle_fan, 0, 4); }

is there way can push entire array of vaos , matrices gpu @ once? maybe using instancing extension somehow?

i can't combine them in 1 vao/vbo, because combination can change (this drawing text, each character having own vao/vbo combo).

and yes, realize involves using es 2.0 extensions. that's ok.

btw, of vaos each character identical except vbo id, if helps.


Comments

Post a Comment

Popular posts from this blog

qml - Is it possible to implement SystemTrayIcon functionality in Qt Quick application -

-
i writing qtquick desktop application. use both c++ (for functionality) , qml (for ui) in it. use qquickview show interface written in qml. i want application reside in system tray when minimised. i mean functionality similar example. http://qt-project.org/doc/qt-4.8/desktop-systray.html . trying implement feature not find way in qt quick application. here main.cpp code: #include <qguiapplication> #include <qqmlengine> #include <qqmlcontext> #include <qqmlfileselector> #include <qquickview> #include "myapp.h" int main(int argc, char* argv[]) { qguiapplication app(argc,argv); app.setapplicationname(qfileinfo(app.applicationfilepath()).basename()); qdir::setcurrent(qapp->applicationdirpath()); myapp myappobject; qquickview view; view.connect(view.engine(), signal(quit()), &app, slot(quit())); view.rootcontext()->setcontextproperty("myappobject", &myappobject); new qqmlfilese...
Read more

double exclamation marks in haskell -

-
i have code: ghci>let listoffuns = map (*) [0..] ghci>(listoffuns !! 4) 5 20 what !! mean? i saw example double exclamation this: ghci> [1,2,3,4]!!1 ghci> 2 but seems don't apply question example. how understand function. need explanations. !! indexes lists. takes list , index, , returns item @ index. if index out of bounds, returns ⊥.
Read more

javascript - How to get D3 Tree link text to transition smoothly? -

-
visualization goal: build d3 tree has text at, both, nodes , links, , transitions cleanly, when nodes selected/deselected. problem: while can link text, called "predicates," show along centroid of link paths, can't seem them transition in , out "smoothly." question: can please me please me clean code , better understand how tree "link" transitions behaving understand theory behind code? visualization , source location: http://bl.ocks.org/guerino1/raw/ed80661daf8e5fa89b85/ the existing code looks follows... var linktextitems = vis.selectall("g.linktext") .data(tree.links(nodes), function(d) { return d.target.id; }) var linktextenter = linktextitems.enter().append("svg:g") .attr("class", "linktext") .attr("transform", function(d) { return "translate(" + (d.target.y + 20) + "," + (getcenterx(d)) + ")"; }); // add predicate text each link path li...
Read more