OpenGL 2

OpenGL 2


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Search for: How do you textures in OPenGL?


glEnable(texture 2D)
glGenTextures
glBindTexture
glTexParameterf
glTexEnvf
GLUtils.texImage2D
bitmap.recycle
glActiveTexture

If you want to draw a large brick wall without texture mapping, for example, each brick must be drawn as a separate polygon. Without texturing, a large flat wall - which is really a single rectangle - might require thousands of individual bricks, and even then the bricks may appear too smooth and regular to be realistic.

Texture mapping allows you to glue an image of a brick wall (obtained, perhaps, by scanning in a photograph of a real wall) to a polygon and to draw the entire wall as a single polygon.

Search for: What is a tesselation?

Search for: define:tesselate

wikipedia reference on tessel

means tiling

textures are rectangular arrays of color and alpha data

texturing is computationally expensive

what are texture borders and mipmaps?

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You need to enable texturing before drawing your scene. Texturing is enabled or disabled using glEnable() or glDisable() with the symbolic constant GL_TEXTURE_1D or GL_TEXTURE_2D for one- or two-dimensional texturing, respectively. (If both are enabled, GL_TEXTURE_2D is the one that is used.)

Here is a tutorial

Another tutorial at gamedev.net

gamedev.net

blender.org

Search for: blender and android

Search for: google 3D warehouse and android

Search for: Livey what is it?

Chris worked for 6 years in the game space...

a game may take 2 to 30 m dollars on higher platforms

chris provides a baseline code for a game at this place

2D side scroller parallex super mario etc

android opengl es 2.0

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Although some devices support opengl es 2.0, there is no java wrapping available as of dec 2009.

As of Feb 9th 2010, from David Turner

And at this link, from David Turner

OpenGL ES 2.0 headers and libraries are not available in the NDK yet. They are coming. Access from Java is also planned. The Android software renderer doesn't support GL ES 2.0, neither does the emulator. 


vertex shaders

david turner romain guy opengl es 2.0

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Froyo should have the es 2.0 bindings.

what is lwjgl

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I need to read this link

The following link

http://code.google.com/p/gl2-android/

As of June 2010 emulator doesnt support es 2.0

See this link to see if a device supports es 2.0

opengl es 2.0 android emulator

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opengl uses-feature

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Mario Zechner: an active developer of OpenGL on Android

GLSurfaceView.setEGLContextClientVersion

http://www.khronos.org/opengles/sdk/docs/man/

opengl es 2.0 tutorial

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Take a look at this tutorial on iphone

opengl shading language

so what are shaders

writing opengl shaders

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opengl shaders tutorial example

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uniform mat4 uMVPMatrix;
attribute vec4 aPosition;
attribute vec2 aTextureCoord;
varying vec2 vTextureCoord;
void main() {
  gl_Position = uMVPMatrix * aPosition;
  vTextureCoord = aTextureCoord;
}


precision mediump float;
 varying vec2 vTextureCoord;
 uniform sampler2D sTexture;
 void main() {
   gl_FragColor = texture2D(sTexture, vTextureCoord);
 }

How can I do indexing vertices in new opengl es 2.0

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How can set color vertices buffer opengl es 2.0

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gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);

opengl es 2.0 books

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Droid support for es 2.0

glvertexattribpointer

Search for: glvertexattribpointer

here is that api ref

glEnableVertexAttribArray

See Robert Green's reply on the differences between iPhone and Android emulators

Here is that text copied

FWIW - The iPhone simulator does not emulate the actual phone. Instead it routes calls to native OSX functions, simulating the environment. The Android emulator does in fact emulator an ARM CPU and runs Android OS on it, which is an important distinction between the two. When using GL in the iPhone simulator, you're actually running all of your GL on the PowerVR GLES emulation library, which uses hardware. It's great for developing but you still really need a device to test since a PC GPU is going to be many times faster than a mobile GPU.

So why can't the Android emulator do the same thing? Because the PVR lib is for x86/OSX and the Android emulator is running on ARM.