GlUtil

Kotlin |Java

@UnstableApi
public final class GlUtil

OpenGL ES utilities.

Summary

Nested types
`public final class GlUtil.GlException extends Exception` Thrown when an OpenGL error occurs.

Constants
`static final int[]`	`EGL_CONFIG_ATTRIBUTES_RGBA_1010102`
`static final int[]`	`EGL_CONFIG_ATTRIBUTES_RGBA_8888`
`static final long`	`@ExperimentalApi GL_FENCE_SYNC_UNSET = -1` Marker value for when no fence sync is set.
`static final int`	`HOMOGENEOUS_COORDINATE_VECTOR_SIZE = 4` Number of elements in a 3d homogeneous coordinate vector describing a vertex.
`static final float`	`LENGTH_NDC = 2.0f` Length of the normalized device coordinate (NDC) space, which spans from -1 to 1.

Public methods
`static void`	`awaitSyncObject(long syncObject)` Ensures that following commands on the current OpenGL context will not be executed until the sync point has been reached.
`static void`	`bindTexture(int textureTarget, int texId, int sampleFilter)` Binds the texture of the given type with the specified MIN and MAG sampling filter and GL_CLAMP_TO_EDGE wrapping.
`static void`	`blitFrameBuffer( int readFboId, GlRect readRect, int drawFboId, GlRect drawRect )` Copies the pixels from `readFboId` into `drawFboId`.
`static void`	`checkEglException(String errorMessage)` Collects EGL errors that occurred in the last called EGL function and throws a `GlException` with the combined error code.
`static void`	`checkGlError()` Collects all OpenGL errors that occurred since this method was last called and throws a `GlException` with the combined error message.
`static void`	`checkGlException(boolean expression, String errorMessage)` Throws a `GlException` with the given message if `expression` evaluates to `false`.
`static void`	`clearFocusedBuffers()` Fills the pixels in the current output render target buffers with (r=0, g=0, b=0, a=0).
`static void`	`clearFocusedBuffersOpaque()` Fills the pixels in the current output render target buffers with (r=0, g=0, b=0, a=1).
`static float[]`	`create4x4IdentityMatrix()` Creates a 4x4 identity matrix.
`static FloatBuffer`	`createBuffer(float[] data)` Allocates a FloatBuffer with the given data.
`static EGLContext`	`createEglContext(EGLDisplay eglDisplay)` Creates a new `EGLContext` for the specified `EGLDisplay`.
`static EGLContext`	`createEglContext( EGLContext sharedContext, EGLDisplay eglDisplay, @IntRange(from = 2, to = 3) int openGlVersion, int[] configAttributes )` Creates a new `EGLContext` for the specified `EGLDisplay`.
`static EGLSurface`	`createEglSurface( EGLDisplay eglDisplay, Object surface, @C.ColorTransfer int colorTransfer, boolean isEncoderInputSurface )` Creates a new `EGLSurface` wrapping the specified `surface`.
`static int`	`createExternalTexture()` Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and GL_CLAMP_TO_EDGE wrapping.
`static int`	`createFboForTexture(int texId)` Returns a new framebuffer for the texture.
`static EGLSurface`	`createFocusedPlaceholderEglSurface( EGLContext eglContext, EGLDisplay eglDisplay )` Creates and focuses a placeholder `EGLSurface`.
`static long`	`createGlSyncFence()` Returns a newly created sync object and inserts it into the GL command stream.
`static int`	`createPixelBufferObject(int size)` Creates a pixel buffer object with a data store of the given size and usage `GL_DYNAMIC_READ`.
`static int`	`createRgb10A2Texture(int width, int height)` Allocates a new `normalized integerGL_RGB10_A2` texture with the specified dimensions.
`static int`	`createTexture(Bitmap bitmap)` Allocates a new texture, initialized with the `bitmap` data and size.
`static int`	`createTexture( int width, int height, boolean useHighPrecisionColorComponents )` Allocates a new RGBA texture with the specified dimensions and color component precision.
`static float[]`	`createVertexBuffer(List<float[]> vertexList)` Flattens the list of 4 element NDC coordinate vectors into a buffer.
`static void`	`deleteBuffer(int bufferId)` Deletes a buffer object, or silently ignores the method call if `bufferId` is unused.
`static void`	`deleteFbo(int fboId)` Deletes a framebuffer, or silently ignores the method call if `fboId` is unused.
`static void`	`deleteRbo(int rboId)` Deletes a renderbuffer, or silently ignores the method call if `rboId` is unused.
`static void`	`deleteSyncObject(long syncObject)` Deletes the underlying native object.
`static void`	`deleteSyncObjectQuietly(long syncObject)` Releases the GL sync object if set, suppressing any error.
`static void`	`deleteTexture(int textureId)` Deletes a GL texture.
`static void`	`destroyEglContext( @Nullable EGLDisplay eglDisplay, @Nullable EGLContext eglContext )` Destroys the `EGLContext` identified by the provided `EGLDisplay` and `EGLContext`.
`static void`	`destroyEglSurface( @Nullable EGLDisplay eglDisplay, @Nullable EGLSurface eglSurface )` Destroys the `EGLSurface`

GlUtil

Summary

Nested types

Constants

Public methods