I believe you can also draw text on a Canvas, and then use the underlying bitmap to create a texture.
On Sep 1, 4:21 pm, Dan Sherman <[email protected]> wrote: > Yeah, that's what we were looking into doing. Was just hoping that there > might be a nice framework I missed somehow :) > > Thanks man :) > > On Tue, Sep 1, 2009 at 3:10 PM, Phred <[email protected]> wrote: > > > Dan,I've yet to start messing with GL ES so this is coming from > > Direct3D experience but the idea is the same. > > > What you can do is create a texture with all the letters of the > > alphabet, numbers 0-9 and symbols. There are apps out there that will > > create such a texture and an XML file that contains the texture co- > > ords for each letter/number/symbol. This one would work as it exports > > in PNG format which Android supports: > >http://www.angelcode.com/products/bmfont/ > > > To draw the text you have render 1 quad for each alpha-numeric > > character being drawn at the location on screen you want it drawn too. > > So if your text is "Hello" then you will have to render 5 quads. Each > > quad will contain the texture co-ords of the corresponding alpha- > > numeric character in the texture. > > > I would create a vertex buffer object at start-up and make it large > > enough to hold 256 characters. Your draw text function would then fill > > out this buffer each frame update with the updated text location co- > > ordinates then all you have to do is get OpenGL to render it. You will > > want it rendered in orthographic projection mode and using screen > > space co-ordinates... that is you don't want OpenGL to transform or > > light those verticies for you. Again not sure of the GLES pipeline as > > all my experience is Direct3D. > > > Make sense kinda kinda? > > > Fred > > > On Aug 24, 3:27 pm, Dan Sherman <[email protected]> wrote: > > > We're having the same issues in some of our games. Unfortunately running > > > into issues drawing dynamic text in OpenGL, any chance you'd care to > > share > > > your solution for that? (if you have one that is) > > > > - Dan > > > > On Mon, Aug 24, 2009 at 2:39 PM, TjerkW <[email protected]> wrote: > > > > > The SpriteMethodTest application shows the benefits of opengl, > > > > the main benefit is: > > > > > If you have a lot of sprites / a lot of things happening at the same > > > > time it is better to use opengl. > > > > I am porting my game to opengl now. It was too slow on only the Canvas > > > > (30+ things moving at the same time) > > > > > On 22 jul, 12:45, MrChaz <[email protected]> wrote: > > > > > The SurfaceView is fine for games, at least simple ones. > > > > > Have a look at the LunarLander sample. > > > > > >http://developer.android.com/guide/samples/LunarLander/index.html > > > > > > On Jul 21, 9:33 pm, klirr <[email protected]> wrote: > > > > > > > I use SurfaceView for my game, tried normal View first but that was > > to > > > > > > slow. > > > > > > Problem is, it still is. The redrawing just isn't anywhere fast > > enough > > > > > > for a game. So unless it is a lot faster on the real phone this > > won't > > > > > > cut it at all. > > > > > > Is it necessary to use OpenGL for games? > > > > > > > package com.android.shmup; > > > > > > > import android.app.Activity; > > > > > > import android.content.Context; > > > > > > import android.graphics.*; > > > > > > import android.os.Bundle; > > > > > > import android.view.View; > > > > > > import android.view.KeyEvent; > > > > > > > public class Shmup extends Activity { > > > > > > > @Override > > > > > > protected void onCreate(Bundle savedInstanceState) { > > > > > > super.onCreate(savedInstanceState); > > > > > > setContentView(new GameView(this)); > > > > > > } > > > > > > > private static class GameView extends View { > > > > > > private Paint mPaint = new Paint(); > > > > > > private int x; > > > > > > private int y; > > > > > > > public GameView(Context context) { > > > > > > super(context); > > > > > > x = 135; > > > > > > y = 303; > > > > > > setFocusable(true); > > > > > > requestFocus(); > > > > > > } > > > > > > > @Override > > > > > > protected void onDraw(Canvascanvas) { > > > > > > Paint paint = mPaint; > > > > > > canvas.translate(10, 10); > > > > > > canvas.drawColor(Color.rgb(184,134,11)); > > > > > > paint.setColor(Color.rgb(107,142,35)); > > > > > > paint.setStrokeWidth(1); > > > > > > canvas.drawRect(x, y, x+30, y+7, paint); > > > > > > canvas.drawRect(x+10, y+7, x+20, y+27, paint); > > > > > > canvas.drawRect(x+5, y+27, x+25, y+32, paint); > > > > > > } > > > > > > > @Override > > > > > > public boolean onKeyDown(int keyCode, KeyEvent event) { > > > > > > if (keyCode == KeyEvent.KEYCODE_DPAD_UP) { > > > > > > y -= 3; > > > > > > invalidate(); > > > > > > } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) { > > > > > > x -= 3; > > > > > > invalidate(); > > > > > > } else if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN) { > > > > > > y += 3; > > > > > > invalidate(); > > > > > > } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) > > { > > > > > > x += 3; > > > > > > invalidate(); > > > > > > } > > > > > > return true; > > > > > > } > > > > > > > } > > > > > > > } > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. 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