Motorola XOOM: GL_REPEAT only works until some point, then it uses GL_CLAMP_TO_EDGE Galaxy S4: Only support textures that have sizes with power of 2. WRAP_S: GL_REPEAT WRAP_T: GL_CLAMP_TO_EDGEĪNDROID FRAGMENTATION let the headache beginĪNDROID FRAGMENTATION The developer of 'Angry Birds,' a top-selling iPhone game, reported that bringing the title to Android devices ended up more difficult than anticipated due to fragmentation within the open platform.

These parameters specify what OpenGL should do if the user specifies a texture coord outside image original dimensions TEXTURE PARAMETERS gl.glTexParameterf(GL10.GL_TEXTURE_2D,! GL10.GL_TEXTURE_WRAP_S,! GL10.GL_REPEAT) ! ! gl.glTexParameterf(GL10.GL_TEXTURE_2D,! GL10.GL_TEXTURE_WRAP_T,! GL10.GL_CLAMP_TO_EDGE) These parameters specify what algorithm OpenGL should use when the texture gets bigger or smaller TEXTURE PARAMETERS // Scale up if the texture if smaller.! gl.glTexParameterf(GL10.GL_TEXTURE_2D,! GL10.GL_TEXTURE_MAG_FILTER,! GL10.GL_LINEAR) ! ! // scale linearly when image smalled than texture! gl.glTexParameterf(GL10.GL_TEXTURE_2D,! GL10.GL_TEXTURE_MIN_FILTER,! GL10.GL_NEAREST) Specify the texture coordinate for each vertex of the geometry you defined NVIDIA Headquarters - Santa Clara - California In order to draw geometry, OpenGL receives a list of vertices. They can be normalized and range from -1 to +1 on every axis. These are relative to device's screen and its origin is at the center of the device. Clipping coordinates is the matrix that originates the view frustum. The triangle's position relative to the object, world and eye spacesĮye coordinates are related to the camera.

Object coordinates have the origin (0,0,0) at the object's world location. The world coordinates are the most used by developers to build the scene.

The API is typically used to interact with a graphics processing unit (GPU), to achieve hardwareaccelerated rendering.” – Le WikipediaĪ lot of fragmentation on android (we will cover it later) “OpenGL (Open Graphics Library) is a crosslanguage, multi-platform application programming interface (API) for rendering 2D and 3D vector graphics. The open graphics library for embedded systems

Android opengl es 2.0 texture tutorial