GlUtil (ExoPlayer library)

java.lang.Object
- com.google.android.exoplayer2.util.GlUtil

public final class GlUtil
extends Object

GL utilities.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`GlUtil.Attribute`	GL attribute, which can be attached to a buffer with `GlUtil.Attribute.setBuffer(float[], int)`.
`static class`	`GlUtil.Uniform`	GL uniform, which can be attached to a sampler using `GlUtil.Uniform.setSamplerTexId(int, int)`.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`checkGlError()`	If there is an OpenGl error, logs the error and if `ExoPlayerLibraryInfo.GL_ASSERTIONS_ENABLED` is true throws a `RuntimeException`.
`static int`	`compileProgram(String[] vertexCode, String[] fragmentCode)`	Builds a GL shader program from vertex and fragment shader code.
`static int`	`compileProgram(String vertexCode, String fragmentCode)`	Builds a GL shader program from vertex and fragment shader code.
`static FloatBuffer`	`createBuffer(float[] data)`	Allocates a FloatBuffer with the given data.
`static FloatBuffer`	`createBuffer(int capacity)`	Allocates a FloatBuffer.
`static int`	`createExternalTexture()`	Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and GL_CLAMP_TO_EDGE wrapping.
`static GlUtil.Attribute[]`	`getAttributes(int program)`	Returns the `GlUtil.Attribute`s in the specified `program`.
`static GlUtil.Uniform[]`	`getUniforms(int program)`	Returns the `GlUtil.Uniform`s in the specified `program`.
`static boolean`	`isProtectedContentExtensionSupported(Context context)`	Returns whether creating a GL context with "EGL_EXT_protected_content" is possible.
`static boolean`	`isSurfacelessContextExtensionSupported()`	Returns whether creating a GL context with "EGL_KHR_surfaceless_context" is possible.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - isProtectedContentExtensionSupported
```
public static boolean isProtectedContentExtensionSupported(Context context)
```
    Returns whether creating a GL context with "EGL_EXT_protected_content" is possible. If true, the device supports a protected output path for DRM content when using GL.
  - isSurfacelessContextExtensionSupported
```
public static boolean isSurfacelessContextExtensionSupported()
```
    Returns whether creating a GL context with "EGL_KHR_surfaceless_context" is possible.
  - checkGlError
```
public static void checkGlError()
```
    If there is an OpenGl error, logs the error and if ExoPlayerLibraryInfo.GL_ASSERTIONS_ENABLED is true throws a RuntimeException.
  - compileProgram
```
public static int compileProgram(String[] vertexCode,
                                 String[] fragmentCode)
```
    Builds a GL shader program from vertex and fragment shader code.
    
    Parameters:
    
    vertexCode - GLES20 vertex shader program as arrays of strings. Strings are joined by adding a new line character in between each of them.
    
    fragmentCode - GLES20 fragment shader program as arrays of strings. Strings are joined by adding a new line character in between each of them.
    
    Returns:
    
    GLES20 program id.
  - compileProgram
```
public static int compileProgram(String vertexCode,
                                 String fragmentCode)
```
    Builds a GL shader program from vertex and fragment shader code.
    
    Parameters:
    
    vertexCode - GLES20 vertex shader program.
    
    fragmentCode - GLES20 fragment shader program.
    
    Returns:
    
    GLES20 program id.
  - getAttributes
```
public static GlUtil.Attribute[] getAttributes(int program)
```
    Returns the GlUtil.Attributes in the specified program.
  - getUniforms
```
public static GlUtil.Uniform[] getUniforms(int program)
```
    Returns the GlUtil.Uniforms in the specified program.
  - createBuffer
```
public static FloatBuffer createBuffer(float[] data)
```
    Allocates a FloatBuffer with the given data.
    
    Parameters:
    
    data - Used to initialize the new buffer.
  - createBuffer
```
public static FloatBuffer createBuffer(int capacity)
```
    Allocates a FloatBuffer.
    
    Parameters:
    
    capacity - The new buffer's capacity, in floats.
  - createExternalTexture
```
public static int createExternalTexture()
```
    Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and GL_CLAMP_TO_EDGE wrapping.

Class GlUtil

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Method Detail

isProtectedContentExtensionSupported

isSurfacelessContextExtensionSupported

checkGlError

compileProgram

compileProgram

getAttributes

getUniforms

createBuffer

createBuffer

createExternalTexture