amazon-chime-sdk/com.amazonaws.services.chime.sdk.meetings.internal.video.gl/GlUtil

GlUtil

object GlUtil

GlUtil contains a broad collection of graphics constants and utilities that are used in multiple places within the SDK

Properties

FULL_RECTANGLE_TEXTURE_COORDINATES

val FULL_RECTANGLE_TEXTURE_COORDINATES: FloatBuffer

Texture coordinates in Normalized Device Coordinates, i.e. (0, 0) is bottom-left and (1, 1) is top-right.

FULL_RECTANGLE_VERTEX_COORDINATES

val FULL_RECTANGLE_VERTEX_COORDINATES: FloatBuffer

Vertex coordinates in Normalized Device Coordinates, i.e. (-1, -1) is bottom-left and (1, 1) is top-right.

Functions

checkGlError

fun checkGlError(op: String)

Checks to see if a OpenGLES error has been raised. Will throw exception if error raised since these mostly trigger on coder error (i.e. something that should be caught in testing like not using the same shared context)

convertToGlTransformMatrix

fun convertToGlTransformMatrix(matrix: Matrix): FloatArray

Converts android.graphics.Matrix to a float16 matrix array used by surfaces and OpenGL.

convertToMatrix

fun convertToMatrix(transformMatrix: FloatArray): Matrix

Converts float16 matrix array used by surfaces and OpenGL to a android.graphics.Matrix.

createProgram

fun createProgram(vertexSource: String, fragmentSource: String): Int

Creates a OpenGLES program from vertex and fragment shader sources. Will throw exception on failures since that usually indicates builder error.

generateTexture

fun generateTexture(target: Int): Int

Generate an OpenGLES texture with standard parameters.