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2014/10/16 ¤W¤È 08:10:51
android Programming Glossary: bytebuffer.allocatedirectAndroid getOrientation() method returns bad results http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results angle FloatBuffer InitFloatBuffer float src ByteBuffer bb ByteBuffer.allocateDirect 4 src.length bb.order ByteOrder.nativeOrder FloatBuffer inBuf.. inBuf ShortBuffer InitShortBuffer short src ByteBuffer bb ByteBuffer.allocateDirect 2 src.length bb.order ByteOrder.nativeOrder ShortBuffer inBuf..
Modifying camera output using SurfaceTexture and OpenGL http://stackoverflow.com/questions/12519235/modifying-camera-output-using-surfacetexture-and-opengl DirectVideo int _texture texture _texture ByteBuffer bb ByteBuffer.allocateDirect squareVertices.length 4 bb.order ByteOrder.nativeOrder vertexBuffer.. squareVertices vertexBuffer.position 0 ByteBuffer dlb ByteBuffer.allocateDirect drawOrder.length 2 dlb.order ByteOrder.nativeOrder drawListBuffer.. drawOrder drawListBuffer.position 0 ByteBuffer bb2 ByteBuffer.allocateDirect textureVertices.length 4 bb2.order ByteOrder.nativeOrder textureVerticesBuffer..
Is Opengl Development GPU Dependant? http://stackoverflow.com/questions/17229066/is-opengl-development-gpu-dependant vertex byte buffer for shape coordinates ByteBuffer bb ByteBuffer.allocateDirect number of coordinate values 4 bytes per float lineCoords...
Trying to draw textured triangles on device fails, but the emulator works. Why? http://stackoverflow.com/questions/2113638/trying-to-draw-textured-triangles-on-device-fails-but-the-emulator-works-why textureBuffer and indexBuffer ByteBuffer byteBuf ByteBuffer.allocateDirect vertices.length 4 byteBuf.order ByteOrder.nativeOrder vertexBuffer.. vertexBuffer.put vertices vertexBuffer.position 0 byteBuf ByteBuffer.allocateDirect texture.length 4 byteBuf.order ByteOrder.nativeOrder textureBuffer.. texture textureBuffer.position 0 indexBuffer ByteBuffer.allocateDirect indices.length indexBuffer.put indices indexBuffer.position..
How to use onSensorChanged sensor data in combination with OpenGL http://stackoverflow.com/questions/2881128/how-to-use-onsensorchanged-sensor-data-in-combination-with-opengl 1 0 1 0 0 1 1 byte indices 0 1 0 2 0 3 ByteBuffer vbb vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder vertexBuffer.. vertexBuffer.put vertices vertexBuffer.position 0 vbb ByteBuffer.allocateDirect colors.length 4 vbb.order ByteOrder.nativeOrder colorBuffer.. colorBuffer.put colors colorBuffer.position 0 indexBuffer ByteBuffer.allocateDirect indices.length indexBuffer.put indices indexBuffer.position..
Taking screenshot of Android OpenGL http://stackoverflow.com/questions/3310990/taking-screenshot-of-android-opengl I found is as follows nt size width height ByteBuffer buf ByteBuffer.allocateDirect size 4 buf.order ByteOrder.nativeOrder glContext.glReadPixels.. int screenshotSize width height ByteBuffer bb ByteBuffer.allocateDirect screenshotSize 4 bb.order ByteOrder.nativeOrder gl.glReadPixels..
Overlay images onto Camera preview SurfaceView http://stackoverflow.com/questions/3548666/overlay-images-onto-camera-preview-surfaceview 7 3 3 7 4 3 4 0 4 7 6 4 6 5 3 0 1 3 1 2 ByteBuffer vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder mVertexBuffer.. vertices mVertexBuffer.position 0 ByteBuffer cbb ByteBuffer.allocateDirect colors.length 4 cbb.order ByteOrder.nativeOrder mColorBuffer.. colors mColorBuffer.position 0 mIndexBuffer ByteBuffer.allocateDirect indices.length mIndexBuffer.put indices mIndexBuffer.position..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory share improve this question There is no leak. ByteBuffer.allocateDirect allocates memory from the native heap free store think malloc..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length 4 vbb.order ByteOrder.nativeOrder use.. coordinate initialize vertex Buffer for texcoords vbb ByteBuffer.allocateDirect texcoordf.length 4 vbb.order ByteOrder.nativeOrder use the device..
Android getOrientation() method returns bad results http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results _angleY angle public void setAngleZ float angle _angleZ angle FloatBuffer InitFloatBuffer float src ByteBuffer bb ByteBuffer.allocateDirect 4 src.length bb.order ByteOrder.nativeOrder FloatBuffer inBuf bb.asFloatBuffer inBuf.put src return inBuf ShortBuffer InitShortBuffer.. FloatBuffer inBuf bb.asFloatBuffer inBuf.put src return inBuf ShortBuffer InitShortBuffer short src ByteBuffer bb ByteBuffer.allocateDirect 2 src.length bb.order ByteOrder.nativeOrder ShortBuffer inBuf bb.asShortBuffer inBuf.put src return inBuf Init data for..
Modifying camera output using SurfaceTexture and OpenGL http://stackoverflow.com/questions/12519235/modifying-camera-output-using-surfacetexture-and-opengl 4 4 bytes per vertex private int texture public DirectVideo int _texture texture _texture ByteBuffer bb ByteBuffer.allocateDirect squareVertices.length 4 bb.order ByteOrder.nativeOrder vertexBuffer bb.asFloatBuffer vertexBuffer.put squareVertices vertexBuffer.position.. vertexBuffer bb.asFloatBuffer vertexBuffer.put squareVertices vertexBuffer.position 0 ByteBuffer dlb ByteBuffer.allocateDirect drawOrder.length 2 dlb.order ByteOrder.nativeOrder drawListBuffer dlb.asShortBuffer drawListBuffer.put drawOrder drawListBuffer.position.. drawListBuffer dlb.asShortBuffer drawListBuffer.put drawOrder drawListBuffer.position 0 ByteBuffer bb2 ByteBuffer.allocateDirect textureVertices.length 4 bb2.order ByteOrder.nativeOrder textureVerticesBuffer bb2.asFloatBuffer textureVerticesBuffer.put..
Is Opengl Development GPU Dependant? http://stackoverflow.com/questions/17229066/is-opengl-development-gpu-dependant float lcolor 1.0f 1.0f 1.0f 1.0f public Lines initialize vertex byte buffer for shape coordinates ByteBuffer bb ByteBuffer.allocateDirect number of coordinate values 4 bytes per float lineCoords. length 4 use the device hardware's native byte order bb.order..
Trying to draw textured triangles on device fails, but the emulator works. Why? http://stackoverflow.com/questions/2113638/trying-to-draw-textured-triangles-on-device-fails-but-the-emulator-works-why above. Also here is the initialization of vertexBuffer textureBuffer and indexBuffer ByteBuffer byteBuf ByteBuffer.allocateDirect vertices.length 4 byteBuf.order ByteOrder.nativeOrder vertexBuffer byteBuf.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position.. ByteOrder.nativeOrder vertexBuffer byteBuf.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position 0 byteBuf ByteBuffer.allocateDirect texture.length 4 byteBuf.order ByteOrder.nativeOrder textureBuffer byteBuf.asFloatBuffer textureBuffer.put texture textureBuffer.position.. textureBuffer byteBuf.asFloatBuffer textureBuffer.put texture textureBuffer.position 0 indexBuffer ByteBuffer.allocateDirect indices.length indexBuffer.put indices indexBuffer.position 0 loadGLTextures gl this.context android opengl es share..
How to use onSensorChanged sensor data in combination with OpenGL http://stackoverflow.com/questions/2881128/how-to-use-onsensorchanged-sensor-data-in-combination-with-opengl 0 0 0 1 0 0 0 1 0 0 0 1 float colors 0 0 0 0 1 0 0 1 0 1 0 1 0 0 1 1 byte indices 0 1 0 2 0 3 ByteBuffer vbb vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder vertexBuffer vbb.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position.. 4 vbb.order ByteOrder.nativeOrder vertexBuffer vbb.asFloatBuffer vertexBuffer.put vertices vertexBuffer.position 0 vbb ByteBuffer.allocateDirect colors.length 4 vbb.order ByteOrder.nativeOrder colorBuffer vbb.asFloatBuffer colorBuffer.put colors colorBuffer.position.. ByteOrder.nativeOrder colorBuffer vbb.asFloatBuffer colorBuffer.put colors colorBuffer.position 0 indexBuffer ByteBuffer.allocateDirect indices.length indexBuffer.put indices indexBuffer.position 0 public void onAccuracyChanged Sensor sensor int accuracy public..
Taking screenshot of Android OpenGL http://stackoverflow.com/questions/3310990/taking-screenshot-of-android-opengl time with taking a screenshot of Android OpenGL. The code I found is as follows nt size width height ByteBuffer buf ByteBuffer.allocateDirect size 4 buf.order ByteOrder.nativeOrder glContext.glReadPixels 0 0 width height GL10.GL_RGBA GL10.GL_UNSIGNED_BYTE buf int.. Your onDrawFrame GL10 gl handler the following code if screenshot int screenshotSize width height ByteBuffer bb ByteBuffer.allocateDirect screenshotSize 4 bb.order ByteOrder.nativeOrder gl.glReadPixels 0 0 width height GL10.GL_RGBA GL10.GL_UNSIGNED_BYTE bb..
Overlay images onto Camera preview SurfaceView http://stackoverflow.com/questions/3548666/overlay-images-onto-camera-preview-surfaceview 1f 1f 0.1f byte indices 0 4 5 0 5 1 1 5 6 1 6 2 2 6 7 2 7 3 3 7 4 3 4 0 4 7 6 4 6 5 3 0 1 3 1 2 ByteBuffer vbb ByteBuffer.allocateDirect vertices.length 4 vbb.order ByteOrder.nativeOrder mVertexBuffer vbb.asIntBuffer mVertexBuffer.put vertices mVertexBuffer.position.. ByteOrder.nativeOrder mVertexBuffer vbb.asIntBuffer mVertexBuffer.put vertices mVertexBuffer.position 0 ByteBuffer cbb ByteBuffer.allocateDirect colors.length 4 cbb.order ByteOrder.nativeOrder mColorBuffer cbb.asFloatBuffer mColorBuffer.put colors mColorBuffer.position.. ByteOrder.nativeOrder mColorBuffer cbb.asFloatBuffer mColorBuffer.put colors mColorBuffer.position 0 mIndexBuffer ByteBuffer.allocateDirect indices.length mIndexBuffer.put indices mIndexBuffer.position 0 public void draw GL10 gl gl.glFrontFace gl.GL_CW gl.glVertexPointer..
ByteBuffer not releasing memory http://stackoverflow.com/questions/5060307/bytebuffer-not-releasing-memory wrong with the DeleteGlobalRef android memory leaks jni bytebuffer share improve this question There is no leak. ByteBuffer.allocateDirect allocates memory from the native heap free store think malloc which is in turn wrapped in to a ByteBuffer instance. When..
Android Camera will not work. startPreview fails http://stackoverflow.com/questions/7942378/android-camera-will-not-work-startpreview-fails float texcoordf X Y Z 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f 1.0f initialize vertex Buffer for vertices ByteBuffer vbb ByteBuffer.allocateDirect triangleCoords.length 4 vbb.order ByteOrder.nativeOrder use the device hardware's native byte order vertices vbb.asFloatBuffer.. vertices.position 0 set the buffer to read the first coordinate initialize vertex Buffer for texcoords vbb ByteBuffer.allocateDirect texcoordf.length 4 vbb.order ByteOrder.nativeOrder use the device hardware's native byte order texcoords vbb.asFloatBuffer..
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