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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.google.android.exoplayer2.util</a></div>
<h2 title="Class GlUtil" class="title">Class GlUtil</h2>
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<pre>public final class <span class="typeNameLabel">GlUtil</span>
extends <a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a></pre>
<div class="block">OpenGL ES utilities.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="GlUtil.GlException.html" title="class in com.google.android.exoplayer2.util">GlUtil.GlException</a></span></code></th>
<td class="colLast">
<div class="block">Thrown when an OpenGL error occurs and <a href="#glAssertionsEnabled"><code>glAssertionsEnabled</code></a> is <code>true</code>.</div>
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<th class="colSecond" scope="col">Field</th>
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<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#glAssertionsEnabled">glAssertionsEnabled</a></span></code></th>
<td class="colLast">
<div class="block">Whether to throw a <a href="GlUtil.GlException.html" title="class in com.google.android.exoplayer2.util"><code>GlUtil.GlException</code></a> in case of an OpenGL error.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#HOMOGENEOUS_COORDINATE_VECTOR_SIZE">HOMOGENEOUS_COORDINATE_VECTOR_SIZE</a></span></code></th>
<td class="colLast">
<div class="block">Number of elements in a 3d homogeneous coordinate vector describing a vertex.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static float</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#LENGTH_NDC">LENGTH_NDC</a></span></code></th>
<td class="colLast">
<div class="block">Length of the normalized device coordinate (NDC) space, which spans from -1 to 1.</div>
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<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr id="i0" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#assertValidTextureSize(int,int)">assertValidTextureSize</a></span>&#8203;(int&nbsp;width,
int&nbsp;height)</code></th>
<td class="colLast">
<div class="block">Asserts the texture size is valid.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#bindTexture(int,int)">bindTexture</a></span>&#8203;(int&nbsp;textureTarget,
int&nbsp;texId)</code></th>
<td class="colLast">
<div class="block">Binds the texture of the given type with default configuration of GL_LINEAR filtering and
GL_CLAMP_TO_EDGE wrapping.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkGlError()">checkGlError</a></span>()</code></th>
<td class="colLast">
<div class="block">If there is an OpenGl error, logs the error and if <a href="#glAssertionsEnabled"><code>glAssertionsEnabled</code></a> is true throws
a <a href="GlUtil.GlException.html" title="class in com.google.android.exoplayer2.util"><code>GlUtil.GlException</code></a>.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/java/nio/FloatBuffer.html" title="class or interface in java.nio" class="externalLink" target="_top">FloatBuffer</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createBuffer(float%5B%5D)">createBuffer</a></span>&#8203;(float[]&nbsp;data)</code></th>
<td class="colLast">
<div class="block">Allocates a FloatBuffer with the given data.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/java/nio/FloatBuffer.html" title="class or interface in java.nio" class="externalLink" target="_top">FloatBuffer</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createBuffer(int)">createBuffer</a></span>&#8203;(int&nbsp;capacity)</code></th>
<td class="colLast">
<div class="block">Allocates a FloatBuffer.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createEglContext(android.opengl.EGLDisplay)">createEglContext</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</code></th>
<td class="colLast">
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> for the specified <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createEglContextEs3Rgba1010102(android.opengl.EGLDisplay)">createEglContextEs3Rgba1010102</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</code></th>
<td class="colLast">
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> for the specified <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>, requesting ES 3 and an
RGBA 1010102 config.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createEglDisplay()">createEglDisplay</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns an initialized default <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createExternalTexture()">createExternalTexture</a></span>()</code></th>
<td class="colLast">
<div class="block">Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and
GL_CLAMP_TO_EDGE wrapping.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createFboForTexture(int)">createFboForTexture</a></span>&#8203;(int&nbsp;texId)</code></th>
<td class="colLast">
<div class="block">Returns a new framebuffer for the texture.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createPlaceholderEglSurface(android.opengl.EGLDisplay)">createPlaceholderEglSurface</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</code></th>
<td class="colLast">
<div class="block">Returns a placeholder <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> to use when reading and writing to the surface is not
required.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createTexture(int,int)">createTexture</a></span>&#8203;(int&nbsp;width,
int&nbsp;height)</code></th>
<td class="colLast">
<div class="block">Returns the texture identifier for a newly-allocated texture with the specified dimensions.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static float[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createVertexBuffer(java.util.List)">createVertexBuffer</a></span>&#8203;(<a href="https://developer.android.com/reference/java/util/List.html" title="class or interface in java.util" class="externalLink" target="_top">List</a>&lt;float[]&gt;&nbsp;vertexList)</code></th>
<td class="colLast">
<div class="block">Flattens the list of 4 element NDC coordinate vectors into a buffer.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#deleteTexture(int)">deleteTexture</a></span>&#8203;(int&nbsp;textureId)</code></th>
<td class="colLast">
<div class="block">Deletes a GL texture.</div>
</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#destroyEglContext(android.opengl.EGLDisplay,android.opengl.EGLContext)">destroyEglContext</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext)</code></th>
<td class="colLast">
<div class="block">Destroys the <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> identified by the provided <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink"><code>EGLDisplay</code></a> and <a href="https://developer.android.com/reference/android/opengl/EGLContext.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLContext</code></a>.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#focusEglSurface(android.opengl.EGLDisplay,android.opengl.EGLContext,android.opengl.EGLSurface,int,int)">focusEglSurface</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a>&nbsp;eglSurface,
int&nbsp;width,
int&nbsp;height)</code></th>
<td class="colLast">
<div class="block">Makes the specified <code>eglSurface</code> the render target, using a viewport of <code>width</code> by
<code>height</code> pixels.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#focusFramebuffer(android.opengl.EGLDisplay,android.opengl.EGLContext,android.opengl.EGLSurface,int,int,int)">focusFramebuffer</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a>&nbsp;eglSurface,
int&nbsp;framebuffer,
int&nbsp;width,
int&nbsp;height)</code></th>
<td class="colLast">
<div class="block">Makes the specified <code>framebuffer</code> the render target, using a viewport of <code>width</code> by
<code>height</code> pixels.</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#focusPlaceholderEglSurface(android.opengl.EGLContext,android.opengl.EGLDisplay)">focusPlaceholderEglSurface</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</code></th>
<td class="colLast">
<div class="block">Creates and focuses a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping a 1x1 pixel buffer.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>static void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#focusPlaceholderEglSurfaceBt2020Pq(android.opengl.EGLContext,android.opengl.EGLDisplay)">focusPlaceholderEglSurfaceBt2020Pq</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</code></th>
<td class="colLast">
<div class="block">Creates and focuses a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping a 1x1 pixel buffer, for HDR rendering
with Rec.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEglSurface(android.opengl.EGLDisplay,java.lang.Object)">getEglSurface</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;surface)</code></th>
<td class="colLast">
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping the specified <code>surface</code>.</div>
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<tr id="i20" class="altColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getEglSurfaceBt2020Pq(android.opengl.EGLDisplay,java.lang.Object)">getEglSurfaceBt2020Pq</a></span>&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;surface)</code></th>
<td class="colLast">
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping the specified <code>surface</code>, for HDR rendering with
Rec.</div>
</td>
</tr>
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<td class="colFirst"><code>static float[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getNormalizedCoordinateBounds()">getNormalizedCoordinateBounds</a></span>()</code></th>
<td class="colLast">
<div class="block">Bounds of normalized device coordinates, commonly used for defining viewport boundaries.</div>
</td>
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<td class="colFirst"><code>static float[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTextureCoordinateBounds()">getTextureCoordinateBounds</a></span>()</code></th>
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<div class="block">Typical bounds used for sampling from textures.</div>
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<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isProtectedContentExtensionSupported(android.content.Context)">isProtectedContentExtensionSupported</a></span>&#8203;(<a href="https://developer.android.com/reference/android/content/Context.html" title="class or interface in android.content" class="externalLink" target="_top">Context</a>&nbsp;context)</code></th>
<td class="colLast">
<div class="block">Returns whether creating a GL context with <a href="#EXTENSION_PROTECTED_CONTENT">"EGL_EXT_protected_content"</a> is possible.</div>
</td>
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<tr id="i24" class="altColor">
<td class="colFirst"><code>static boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSurfacelessContextExtensionSupported()">isSurfacelessContextExtensionSupported</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns whether the <a href="#EXTENSION_SURFACELESS_CONTEXT">"EGL_KHR_surfaceless_context"</a> extension is supported.</div>
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<tr id="i25" class="rowColor">
<td class="colFirst"><code>static <a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#loadAsset(android.content.Context,java.lang.String)">loadAsset</a></span>&#8203;(<a href="https://developer.android.com/reference/android/content/Context.html" title="class or interface in android.content" class="externalLink" target="_top">Context</a>&nbsp;context,
<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;assetPath)</code></th>
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<code><a href="https://developer.android.com/reference/java/lang/Object.html#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_top">wait</a></code></li>
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<pre>public static&nbsp;boolean glAssertionsEnabled</pre>
<div class="block">Whether to throw a <a href="GlUtil.GlException.html" title="class in com.google.android.exoplayer2.util"><code>GlUtil.GlException</code></a> in case of an OpenGL error.</div>
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<pre>public static final&nbsp;int HOMOGENEOUS_COORDINATE_VECTOR_SIZE</pre>
<div class="block">Number of elements in a 3d homogeneous coordinate vector describing a vertex.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#com.google.android.exoplayer2.util.GlUtil.HOMOGENEOUS_COORDINATE_VECTOR_SIZE">Constant Field Values</a></dd>
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<pre>public static final&nbsp;float LENGTH_NDC</pre>
<div class="block">Length of the normalized device coordinate (NDC) space, which spans from -1 to 1.</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#com.google.android.exoplayer2.util.GlUtil.LENGTH_NDC">Constant Field Values</a></dd>
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<pre class="methodSignature">public static&nbsp;float[]&nbsp;getNormalizedCoordinateBounds()</pre>
<div class="block">Bounds of normalized device coordinates, commonly used for defining viewport boundaries.</div>
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<pre class="methodSignature">public static&nbsp;float[]&nbsp;getTextureCoordinateBounds()</pre>
<div class="block">Typical bounds used for sampling from textures.</div>
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<pre class="methodSignature">public static&nbsp;float[]&nbsp;createVertexBuffer&#8203;(<a href="https://developer.android.com/reference/java/util/List.html" title="class or interface in java.util" class="externalLink" target="_top">List</a>&lt;float[]&gt;&nbsp;vertexList)</pre>
<div class="block">Flattens the list of 4 element NDC coordinate vectors into a buffer.</div>
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<div class="block">Returns whether creating a GL context with <a href="#EXTENSION_PROTECTED_CONTENT">"EGL_EXT_protected_content"</a> is possible.
<p>If <code>true</code>, the device supports a protected output path for DRM content when using GL.</div>
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<pre class="methodSignature">public static&nbsp;boolean&nbsp;isSurfacelessContextExtensionSupported()</pre>
<div class="block">Returns whether the <a href="#EXTENSION_SURFACELESS_CONTEXT">"EGL_KHR_surfaceless_context"</a> extension is supported.
<p>This extension allows passing <a href="https://developer.android.com/reference/android/opengl/EGL14.html#EGL_NO_SURFACE" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGL14.EGL_NO_SURFACE</code></a> for both the write and read
surfaces in a call to <a href="https://developer.android.com/reference/android/opengl/EGL14.html#eglMakeCurrent(android.opengl.EGLDisplay,android.opengl.EGLSurface,android.opengl.EGLSurface,android.opengl.EGLContext)" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGL14.eglMakeCurrent(EGLDisplay, EGLSurface, EGLSurface,
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;createEglDisplay()</pre>
<div class="block">Returns an initialized default <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>.</div>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink">EGLContext</a>&nbsp;createEglContext&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</pre>
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> for the specified <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>.</div>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink">EGLContext</a>&nbsp;createEglContextEs3Rgba1010102&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</pre>
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> for the specified <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a>, requesting ES 3 and an
RGBA 1010102 config.</div>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink">EGLSurface</a>&nbsp;getEglSurface&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;surface)</pre>
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping the specified <code>surface</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eglDisplay</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a> to attach the surface to.</dd>
<dd><code>surface</code> - The surface to wrap; must be a surface, surface texture or surface holder.</dd>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink">EGLSurface</a>&nbsp;getEglSurfaceBt2020Pq&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;surface)</pre>
<div class="block">Returns a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping the specified <code>surface</code>, for HDR rendering with
Rec. 2020 color primaries and using the PQ transfer function.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eglDisplay</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a> to attach the surface to.</dd>
<dd><code>surface</code> - The surface to wrap; must be a surface, surface texture or surface holder.</dd>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink">EGLSurface</a>&nbsp;createPlaceholderEglSurface&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</pre>
<div class="block">Returns a placeholder <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> to use when reading and writing to the surface is not
required.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eglDisplay</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a> to attach the surface to.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><a href="https://developer.android.com/reference/android/opengl/EGL14.html#EGL_NO_SURFACE" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGL14.EGL_NO_SURFACE</code></a> if supported and a 1x1 pixel buffer surface otherwise.</dd>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;void&nbsp;focusPlaceholderEglSurface&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
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<div class="block">Creates and focuses a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping a 1x1 pixel buffer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eglContext</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLContext</code></a> to make current.</dd>
<dd><code>eglDisplay</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a> to attach the surface to.</dd>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;void&nbsp;focusPlaceholderEglSurfaceBt2020Pq&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay)</pre>
<div class="block">Creates and focuses a new <a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLSurface</code></a> wrapping a 1x1 pixel buffer, for HDR rendering
with Rec. 2020 color primaries and using the PQ transfer function.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eglContext</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLContext</code></a> to make current.</dd>
<dd><code>eglDisplay</code> - The <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLDisplay</code></a> to attach the surface to.</dd>
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<pre class="methodSignature">public static&nbsp;void&nbsp;checkGlError()</pre>
<div class="block">If there is an OpenGl error, logs the error and if <a href="#glAssertionsEnabled"><code>glAssertionsEnabled</code></a> is true throws
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<pre class="methodSignature">public static&nbsp;void&nbsp;assertValidTextureSize&#8203;(int&nbsp;width,
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<div class="block">Asserts the texture size is valid.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>width</code> - The width for a texture.</dd>
<dd><code>height</code> - The height for a texture.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="GlUtil.GlException.html" title="class in com.google.android.exoplayer2.util">GlUtil.GlException</a></code> - If the texture width or height is invalid.</dd>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;void&nbsp;focusEglSurface&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a>&nbsp;eglSurface,
int&nbsp;width,
int&nbsp;height)</pre>
<div class="block">Makes the specified <code>eglSurface</code> the render target, using a viewport of <code>width</code> by
<code>height</code> pixels.</div>
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<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;void&nbsp;focusFramebuffer&#8203;(<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext,
<a href="https://developer.android.com/reference/android/opengl/EGLSurface.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLSurface</a>&nbsp;eglSurface,
int&nbsp;framebuffer,
int&nbsp;width,
int&nbsp;height)</pre>
<div class="block">Makes the specified <code>framebuffer</code> the render target, using a viewport of <code>width</code> by
<code>height</code> pixels.</div>
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<pre class="methodSignature">public static&nbsp;void&nbsp;deleteTexture&#8203;(int&nbsp;textureId)</pre>
<div class="block">Deletes a GL texture.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>textureId</code> - The ID of the texture to delete.</dd>
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<h4>destroyEglContext</h4>
<pre class="methodSignature">@RequiresApi(17)
public static&nbsp;void&nbsp;destroyEglContext&#8203;(@Nullable
<a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLDisplay</a>&nbsp;eglDisplay,
@Nullable
<a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink" target="_top">EGLContext</a>&nbsp;eglContext)</pre>
<div class="block">Destroys the <a href="https://developer.android.com/reference/android/opengl/EGLContext.html" title="class or interface in android.opengl" class="externalLink"><code>EGLContext</code></a> identified by the provided <a href="https://developer.android.com/reference/android/opengl/EGLDisplay.html?is-external=true" title="class or interface in android.opengl" class="externalLink"><code>EGLDisplay</code></a> and <a href="https://developer.android.com/reference/android/opengl/EGLContext.html?is-external=true" title="class or interface in android.opengl" class="externalLink" target="_top"><code>EGLContext</code></a>.</div>
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<pre class="methodSignature">public static&nbsp;<a href="https://developer.android.com/reference/java/nio/FloatBuffer.html" title="class or interface in java.nio" class="externalLink" target="_top">FloatBuffer</a>&nbsp;createBuffer&#8203;(float[]&nbsp;data)</pre>
<div class="block">Allocates a FloatBuffer with the given data.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>data</code> - Used to initialize the new buffer.</dd>
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<pre class="methodSignature">public static&nbsp;<a href="https://developer.android.com/reference/java/nio/FloatBuffer.html" title="class or interface in java.nio" class="externalLink" target="_top">FloatBuffer</a>&nbsp;createBuffer&#8203;(int&nbsp;capacity)</pre>
<div class="block">Allocates a FloatBuffer.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>capacity</code> - The new buffer's capacity, in floats.</dd>
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<pre class="methodSignature">public static&nbsp;<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink">String</a>&nbsp;loadAsset&#8203;(<a href="https://developer.android.com/reference/android/content/Context.html?is-external=true" title="class or interface in android.content" class="externalLink" target="_top">Context</a>&nbsp;context,
<a href="https://developer.android.com/reference/java/lang/String.html" title="class or interface in java.lang" class="externalLink" target="_top">String</a>&nbsp;assetPath)
throws <a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a></pre>
<div class="block">Loads a file from the assets folder.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>context</code> - The <a href="https://developer.android.com/reference/android/content/Context.html" title="class or interface in android.content" class="externalLink" target="_top"><code>Context</code></a>.</dd>
<dd><code>assetPath</code> - The path to the file to load, from the assets folder.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The content of the file to load.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://developer.android.com/reference/java/io/IOException.html" title="class or interface in java.io" class="externalLink" target="_top">IOException</a></code> - If the file couldn't be read.</dd>
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<pre class="methodSignature">public static&nbsp;int&nbsp;createExternalTexture()</pre>
<div class="block">Creates a GL_TEXTURE_EXTERNAL_OES with default configuration of GL_LINEAR filtering and
GL_CLAMP_TO_EDGE wrapping.</div>
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<pre class="methodSignature">public static&nbsp;int&nbsp;createTexture&#8203;(int&nbsp;width,
int&nbsp;height)</pre>
<div class="block">Returns the texture identifier for a newly-allocated texture with the specified dimensions.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>width</code> - of the new texture in pixels</dd>
<dd><code>height</code> - of the new texture in pixels</dd>
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<pre class="methodSignature">public static&nbsp;void&nbsp;bindTexture&#8203;(int&nbsp;textureTarget,
int&nbsp;texId)</pre>
<div class="block">Binds the texture of the given type with default configuration of GL_LINEAR filtering and
GL_CLAMP_TO_EDGE wrapping.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>texId</code> - The texture identifier.</dd>
<dd><code>textureTarget</code> - The target to which the texture is bound, e.g. <a href="https://developer.android.com/reference/android/opengl/GLES20.html#GL_TEXTURE_2D" title="class or interface in android.opengl" class="externalLink"><code>GLES20.GL_TEXTURE_2D</code></a> for a two-dimensional texture or <a href="https://developer.android.com/reference/android/opengl/GLES11Ext.html?is-external=true#GL_TEXTURE_EXTERNAL_OES" title="class or interface in android.opengl" class="externalLink" target="_top"><code>GLES11Ext.GL_TEXTURE_EXTERNAL_OES</code></a> for an external texture.</dd>
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<pre class="methodSignature">public static&nbsp;int&nbsp;createFboForTexture&#8203;(int&nbsp;texId)</pre>
<div class="block">Returns a new framebuffer for the texture.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>texId</code> - The identifier of the texture to attach to the framebuffer.</dd>
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