Annyce Davis

ones and zeros

  • Home
  • Public Speaking
  • About Me
  • Courses
  • Life

Creating a Texture in OpenGL ES 1.0

June 23, 2011 by Annyce Davis Leave a Comment

I have recently been learning to use OpenGL ES on Android.  I know that many devices currently support OpenGL ES 2.0, but I wanted to start with 1.0 that is supported everywhere.  To that end I will be making a series of posts that contain various bits of code that I have learned along the way that might be useful to others.

So, this is how you can create a texture in OpenGL ES 1.0:

Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(),
R.drawable.item);
int[] textureIds = new int[1];
gl.glGenTextures(1, textureIds, 0);
textureId = textureIds[0];

gl.glBindTexture(GL10.GL_TEXTURE_2D, textureId);

GLUtils.texImage2D(GL10.GL_TEXTURE_2D, 0, bitmap, 0);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MIN_FILTER,
GL10.GL_NEAREST);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_MAG_FILTER,
GL10.GL_LINEAR);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_S,
GL10.GL_CLAMP_TO_EDGE);

gl.glTexParameterf(GL10.GL_TEXTURE_2D, GL10.GL_TEXTURE_WRAP_T,
GL10.GL_CLAMP_TO_EDGE);

gl.glBindTexture(GL10.GL_TEXTURE_2D, 0);

bitmap.recycle();

You can then use the textureId to bind the texture and draw it on the OpenGLSurfaceView.

Share this:

  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)
  • Click to share on LinkedIn (Opens in new window)

Related

Filed Under: Android Tagged With: Bitmap, OpenGL, OpenGL ES

Follow Me

What engineering leaders need to know from this year’s Google I/O

I didn't intentionally aim to create a rhyming title, but there you have it. Each year, I look forward to Google I/O like a kid going back to school. This year … [Read More...]

Talk: The Real MVP

You have an idea for a new app. You've secured buy-in from the business. What's next? The MVP. But what does it take to ship a new app these days? What are the … [Read More...]

Categories

  • Android (55)
  • Career (2)
  • Communication (4)
  • Flutter (1)
  • Git (4)
  • Gradle (4)
  • Grails (23)
  • Java (8)
  • JavaScript (6)
  • Kotlin (17)
  • Life (4)
  • Public Speaking (23)
  • RxJava (1)
  • Software Development (7)
  • Twitter (3)
  • Uncategorized (11)
  • Video Course (5)

Copyright © 2023 · Beautiful Pro Theme on Genesis Framework · WordPress · Log in