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| <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" |
| "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd" [ |
| <!ENTITY clCreate_memflagsInc SYSTEM "clCreate_memflagsInc.xml"> |
| ]> |
| |
| <refentry> |
| <refentryinfo> |
| <keywordset> |
| <keyword>clCreateImage</keyword> |
| </keywordset> |
| </refentryinfo> |
| |
| <refmeta> |
| <refentrytitle> |
| clCreateImage |
| </refentrytitle> |
| |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2011</year> |
| <holder>The Khronos Group Inc. |
| Permission is hereby granted, free of charge, to any person obtaining a |
| copy of this software and/or associated documentation files (the |
| "Materials"), to deal in the Materials without restriction, including |
| without limitation the rights to use, copy, modify, merge, publish, |
| distribute, sublicense, and/or sell copies of the Materials, and to |
| permit persons to whom the Materials are furnished to do so, subject to |
| the condition that this copyright notice and permission notice shall be included |
| in all copies or substantial portions of the Materials.</holder> |
| </copyright> |
| </refmiscinfo> |
| <manvolnum>3</manvolnum> |
| </refmeta> |
| |
| <!-- ================================ SYNOPSIS --> |
| |
| <refnamediv id="clCreateImage"> |
| <refname> |
| clCreateImage |
| </refname> |
| |
| <refpurpose> |
| Creates a 1D image, 1D image buffer, 1D image array, 2D image, 2D image array or 3D image object. |
| </refpurpose> |
| </refnamediv> |
| |
| <refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title> |
| <funcsynopsis> |
| <funcprototype> |
| <funcdef> |
| <link xlink:href="abstractDataTypes.html">cl_mem</link> <function>clCreateImage</function> |
| </funcdef> |
| |
| <paramdef><link xlink:href="abstractDataTypes.html">cl_context</link><parameter>context</parameter></paramdef> |
| <paramdef><link xlink:href="enums.html#cl_mem_flags">cl_mem_flags</link><parameter>flags</parameter></paramdef> |
| <paramdef>const <link xlink:href="cl_image_format.html">cl_image_format</link><parameter>*image_format</parameter></paramdef> |
| <paramdef>const <link xlink:href="cl_image_desc.html">cl_image_desc</link><parameter>*image_desc</parameter></paramdef> |
| <paramdef><link xlink:href="scalarDataTypes.html">void</link><parameter>*host_ptr</parameter></paramdef> |
| <paramdef><link xlink:href="scalarDataTypes.html">cl_int</link><parameter>*errcode_ret</parameter></paramdef> |
| |
| </funcprototype> |
| </funcsynopsis> |
| </refsynopsisdiv> |
| |
| <!-- ================================ PARAMETERS --> |
| |
| <refsect1 id="parameters"> |
| <title>Parameters</title> |
| <variablelist> |
| |
| <varlistentry> |
| <term> <varname> context </varname> </term> |
| <listitem> |
| <para> <!-- parameter description --> |
| A valid OpenCL context on which the image object is to be created. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> flags </varname> </term> |
| <listitem> |
| <para> |
| <!-- parameter description --> A bit-field that is used to specify allocation |
| and usage information about the image memory object being created and is |
| described in the table below. |
| </para> |
| |
| <para> |
| For all image types except <constant>CL_MEM_OBJECT_IMAGE1D_BUFFER</constant>, |
| if value specified for <varname>flags</varname> is 0, the default is used |
| which is <constant>CL_MEM_READ_WRITE</constant>. |
| </para> |
| |
| <para> |
| For <constant>CL_MEM_OBJECT_IMAGE1D_BUFFER</constant> image type, if the |
| <constant>CL_MEM_READ_WRITE</constant>, <constant>CL_MEM_READ_ONLY</constant> |
| or <constant>CL_MEM_WRITE_ONLY</constant> values are not specified in |
| <varname>flags</varname>, they are inherited from the corresponding |
| memory access qualifers associated with <varname>buffer</varname>. |
| The <constant>CL_MEM_USE_HOST_PTR</constant>, |
| <constant>CL_MEM_ALLOC_HOST_PTR</constant> and |
| <constant>CL_MEM_COPY_HOST_PTR</constant> values cannot |
| be specified in <varname>flags</varname> but are inherited |
| from the corresponding memory access qualifiers associated with |
| <varname>buffer</varname>. If <constant>CL_MEM_COPY_HOST_PTR</constant> |
| is specified in the memory access qualifier values associated with |
| <varname>buffer</varname> it does not imply any additional copies |
| when the sub-buffer is created from <varname>buffer</varname>. |
| If the <constant>CL_MEM_HOST_WRITE_ONLY</constant>, |
| <constant>CL_MEM_HOST_READ_ONLY</constant> or |
| <constant>CL_MEM_HOST_NO_ACCESS</constant> values are not specified in |
| <varname>flags</varname>, they are inherited from the corresponding memory |
| access qualifiers associated with <varname>buffer</varname>. |
| </para> |
| |
| &clCreate_memflagsInc; |
| |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> image_format </varname> </term> |
| <listitem> |
| <para> |
| <!-- parameter description --> A pointer to a structure that |
| describes format properties of the image to be allocated. See |
| <citerefentry><refentrytitle>cl_image_format</refentrytitle></citerefentry> |
| for a detailed description of the image format descriptor. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> image_desc </varname> </term> |
| <listitem> |
| <para> |
| <!-- parameter description --> A pointer to a structure that |
| describes type and dimensions of the image to be allocated. See |
| <citerefentry><refentrytitle>cl_image_desc</refentrytitle></citerefentry> |
| for more information. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> host_ptr </varname> </term> |
| <listitem> |
| <para> |
| A pointer to the image data that may already be allocated by the application. |
| Refer to table below for a description of how large the buffer that |
| <varname>host_ptr</varname> points to must be. |
| </para> |
| |
| <informaltable frame="all"> |
| <tgroup cols="2" align="left" colsep="1" rowsep="1"> |
| <colspec colname="col1" colnum="1" /> |
| <colspec colname="col2" colnum="2" /> |
| <thead> |
| <row> |
| <entry>Image Type</entry> |
| <entry>Size of buffer that <varname>host_ptr</varname> points to</entry> |
| </row> |
| </thead> |
| |
| <tbody> |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE1D</constant></entry> |
| <entry><constant>≥ image_row_pitch</constant></entry> |
| </row> |
| |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE1D_BUFFER</constant></entry> |
| <entry><constant>≥ image_row_pitch</constant></entry> |
| </row> |
| |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE2D</constant></entry> |
| <entry><constant>≥ image_row_pitch * image_height</constant></entry> |
| </row> |
| |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE3D</constant></entry> |
| <entry><constant>≥ image_slice_pitch * image_depth</constant></entry> |
| </row> |
| |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE1D_ARRAY</constant></entry> |
| <entry><constant>≥ image_slice_pitch * image_array_size</constant></entry> |
| </row> |
| |
| <row> |
| <entry><constant>CL_MEM_OBJECT_IMAGE2D_ARRAY</constant></entry> |
| <entry><constant>≥ image_slice_pitch * image_array_size</constant></entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| |
| <para> |
| For a 3D image or 2D image array, the image data specified by |
| <varname>host_ptr</varname> is stored as a linear sequence of adjacent 2D |
| image slices or 2D images respectively. Each 2D image is a linear sequence |
| of adjacent scanlines. Each scanline is a linear sequence of image elements. |
| </para> |
| |
| <para> |
| For a 2D image, the image data specified by <varname>host_ptr</varname> |
| is stored as a linear sequence of adjacent scanlines. Each scanline is |
| a linear sequence of image elements. |
| </para> |
| |
| <para> |
| For a 1D image array, the image data specified by <varname>host_ptr</varname> |
| is stored as a linear sequence of adjacent 1D images respectively. Each 1D |
| image or 1D image buffer is a single scanline which is a linear sequence |
| of adjacent elements. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term> <varname> errcode_ret </varname> </term> |
| <listitem> |
| <para> |
| Will return an appropriate error code. If <varname>errcode_ret</varname> |
| is NULL, no error code is returned. |
| </para> |
| </listitem> |
| </varlistentry> |
| </variablelist> |
| </refsect1> |
| |
| <!-- ================================ DESCRIPTION |
| <refsect1 id="description"><title>Description</title> |
| |
| </refsect1>--> |
| |
| <!-- ================================ ERRORS --> |
| |
| <refsect1 id="errors"><title>Errors</title> |
| <para> |
| <function>clCreateImage</function> returns a valid non-zero image object and |
| <varname>errcode_ret</varname> is set to <errorname>CL_SUCCESS</errorname> if the |
| image object is created successfully. Otherwise, it returns a NULL value with one of |
| the following error values returned in <varname>errcode_ret</varname>: |
| </para> |
| |
| <itemizedlist mark="disc"> |
| <listitem> |
| <errorname>CL_INVALID_CONTEXT</errorname> if <varname>context</varname> is not a valid context. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if values specified in <varname>flags</varname> are not valid. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_IMAGE_FORMAT_DESCRIPTOR</errorname> if values specified in |
| <varname>image_format</varname> are not valid or if <varname>image_format</varname> |
| is NULL. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_IMAGE_DESCRIPTOR</errorname> if values specified in |
| <varname>image_desc</varname> are not valid or if <varname>image_desc</varname> |
| is NULL. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_IMAGE_SIZE</errorname> if image dimensions specified |
| in <varname>image_desc</varname> exceed the minimum maximum image dimensions |
| described in the table of allowed values for <varname>param_name</varname> |
| for <citerefentry><refentrytitle>clGetDeviceInfo</refentrytitle></citerefentry> |
| for all devices in <varname>context</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_HOST_PTR</errorname> if <varname>host_ptr</varname> in |
| <varname>image_desc</varname> is NULL and <constant>CL_MEM_USE_HOST_PTR</constant> or |
| <constant>CL_MEM_COPY_HOST_PTR</constant> are set in <varname>flags</varname> or if |
| <varname>host_ptr</varname> is not NULL but <constant>CL_MEM_COPY_HOST_PTR</constant> |
| or <constant>CL_MEM_USE_HOST_PTR</constant> are not set in <varname>flags</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if a 1D image buffer is being created |
| and the buffer object was created with <constant>CL_MEM_WRITE_ONLY</constant> |
| and <varname>flags</varname> specifies <constant>CL_MEM_READ_WRITE</constant> |
| or <constant>CL_MEM_READ_ONLY</constant>, or if the buffer object was |
| created with <constant>CL_MEM_READ_ONLY</constant> and <varname>flags</varname> specifies |
| <constant>CL_MEM_READ_WRITE</constant> or <constant>CL_MEM_WRITE_ONLY</constant>, or |
| if <varname>flags</varname> specifies <constant>CL_MEM_USE_HOST_PTR</constant> |
| or <constant>CL_MEM_ALLOC_HOST_PTR</constant> or |
| <constant>CL_MEM_COPY_HOST_PTR</constant>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if a 1D image buffer is being created and |
| the buffer object was created with <constant>CL_MEM_HOST_WRITE_ONLY</constant> |
| and <varname>flags</varname> specifies <constant>CL_MEM_HOST_READ_ONLY</constant>, |
| or if the buffer object was created with <constant>CL_MEM_HOST_READ_ONLY</constant> |
| and <varname>flags</varname> specifies <constant>CL_MEM_HOST_WRITE_ONLY</constant>, |
| or if the buffer object was created with <constant>CL_MEM_HOST_NO_ACCESS</constant> |
| and <varname>flags</varname> specifies <constant>CL_MEM_HOST_READ_ONLY</constant> |
| or <constant>CL_MEM_HOST_WRITE_ONLY</constant>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_IMAGE_FORMAT_NOT_SUPPORTED</errorname> if the |
| <varname>image_format</varname> is not supported. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_MEM_OBJECT_ALLOCATION_FAILURE</errorname> if there is a failure to |
| allocate memory for image object. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_OPERATION</errorname> if there are |
| no devices in <varname>context</varname> that support |
| images (i.e. <constant>CL_DEVICE_IMAGE_SUPPORT</constant> |
| (specified in the table of OpenCL Device Queries for |
| <citerefentry><refentrytitle>clGetDeviceInfo</refentrytitle></citerefentry>) |
| is <constant>CL_FALSE</constant>). |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_OUT_OF_RESOURCES</errorname> if there is a failure to allocate |
| resources required by the OpenCL implementation on the device. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate |
| resources required by the OpenCL implementation on the host. |
| </listitem> |
| </itemizedlist> |
| </refsect1> |
| |
| <!-- ================================ EXAMPLE --> |
| <!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE --> |
| <!-- |
| <refsect2 id="example1"> |
| <title> |
| Example |
| </title> |
| |
| <informaltable frame="none"> |
| <tgroup cols="1" align="left" colsep="0" rowsep="0"> |
| <colspec colname="col1" colnum="1" /> |
| <tbody> |
| <row> |
| <entry> |
| Example goes here - it will be set in "code" type with white space preserved. |
| </entry> |
| </row> |
| </tbody> |
| </tgroup> |
| </informaltable> |
| </refsect2> |
| --> |
| |
| <!-- ================================ SPECIFICATION --> |
| <!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page |
| --> |
| <refsect1 id="specification"><title>Specification</title> |
| <para> |
| <imageobject> |
| <imagedata fileref="pdficon_small1.gif" format="gif" /> |
| </imageobject> |
| |
| <olink uri="clCreateImage">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry><refentrytitle>cl_image_desc</refentrytitle></citerefentry>, |
| <citerefentry><refentrytitle>cl_image_format</refentrytitle></citerefentry>, |
| <citerefentry href="classDiagram"><refentrytitle>Cardinality Diagram</refentrytitle></citerefentry> |
| </para> |
| </refsect1> |
| |
| <!-- ================================ COPYRIGHT --> |
| <!-- Content included from copyright.inc.xsl --> |
| |
| <refsect3 id="Copyright"><title></title> |
| <imageobject> |
| <imagedata fileref="KhronosLogo.jpg" format="jpg" /> |
| </imageobject> |
| <para /> |
| </refsect3> |
| |
| <!-- 11-Nov-2011 --> |
| </refentry> |
| |
