mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-26 18:15:39 +00:00
375 lines
18 KiB
XML
375 lines
18 KiB
XML
<!DOCTYPE refentry [ <!ENTITY % mathent SYSTEM "math.ent"> %mathent; ]>
|
|
|
|
<!-- Converted by db4-upgrade version 1.1 -->
|
|
|
|
<refentry xmlns="http://docbook.org/ns/docbook" version="5.0" xml:id="glTexSubImage2D">
|
|
<info>
|
|
<copyright>
|
|
<year>1991-2006</year>
|
|
<holder>Silicon Graphics, Inc.</holder>
|
|
</copyright>
|
|
<copyright>
|
|
<year>2010-2014</year>
|
|
<holder>Khronos Group</holder>
|
|
</copyright>
|
|
</info>
|
|
<refmeta>
|
|
<refentrytitle>glTexSubImage2D</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glTexSubImage2D</refname>
|
|
<refpurpose>specify a two-dimensional texture subimage</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv>
|
|
<title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glTexSubImage2D</function></funcdef>
|
|
<paramdef>GLenum <parameter>target</parameter></paramdef>
|
|
<paramdef>GLint <parameter>level</parameter></paramdef>
|
|
<paramdef>GLint <parameter>xoffset</parameter></paramdef>
|
|
<paramdef>GLint <parameter>yoffset</parameter></paramdef>
|
|
<paramdef>GLsizei <parameter>width</parameter></paramdef>
|
|
<paramdef>GLsizei <parameter>height</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>format</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>type</parameter></paramdef>
|
|
<paramdef>const GLvoid * <parameter>data</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 xml:id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>target</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the target texture.
|
|
Must be <constant>GL_TEXTURE_2D</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_X</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_X</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_Y</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_Y</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_Z</constant>, or
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_Z</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>level</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the level-of-detail number.
|
|
Level 0 is the base image level.
|
|
Level <emphasis>n</emphasis> is the <emphasis>n</emphasis>th mipmap reduction image.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>xoffset</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a texel offset in the x direction within the texture array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>yoffset</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a texel offset in the y direction within the texture array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>width</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the width of the texture subimage.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>height</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the height of the texture subimage.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>format</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the format of the pixel data.
|
|
The following symbolic values are accepted:
|
|
<constant>GL_RED</constant>,
|
|
<constant>GL_RED_INTEGER</constant>,
|
|
<constant>GL_RG</constant>,
|
|
<constant>GL_RG_INTEGER</constant>,
|
|
<constant>GL_RGB</constant>,
|
|
<constant>GL_RGB_INTEGER</constant>,
|
|
<constant>GL_RGBA</constant>,
|
|
<constant>GL_RGBA_INTEGER</constant>,
|
|
<constant>GL_DEPTH_COMPONENT</constant>,
|
|
<constant>GL_DEPTH_STENCIL</constant>,
|
|
<constant>GL_LUMINANCE_ALPHA</constant>,
|
|
<constant>GL_LUMINANCE</constant>, and
|
|
<constant>GL_ALPHA</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>type</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the data type of the pixel data.
|
|
The following symbolic values are accepted:
|
|
<constant>GL_UNSIGNED_BYTE</constant>,
|
|
<constant>GL_BYTE</constant>,
|
|
<constant>GL_UNSIGNED_SHORT</constant>,
|
|
<constant>GL_SHORT</constant>,
|
|
<constant>GL_UNSIGNED_INT</constant>,
|
|
<constant>GL_INT</constant>,
|
|
<constant>GL_HALF_FLOAT</constant>,
|
|
<constant>GL_FLOAT</constant>,
|
|
<constant>GL_UNSIGNED_SHORT_5_6_5</constant>,
|
|
<constant>GL_UNSIGNED_SHORT_4_4_4_4</constant>,
|
|
<constant>GL_UNSIGNED_SHORT_5_5_5_1</constant>,
|
|
<constant>GL_UNSIGNED_INT_2_10_10_10_REV</constant>,
|
|
<constant>GL_UNSIGNED_INT_10F_11F_11F_REV</constant>,
|
|
<constant>GL_UNSIGNED_INT_5_9_9_9_REV</constant>,
|
|
<constant>GL_UNSIGNED_INT_24_8</constant>, and
|
|
<constant>GL_FLOAT_32_UNSIGNED_INT_24_8_REV</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>data</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a pointer to the image data in memory.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 xml:id="description"><title>Description</title>
|
|
<para>
|
|
Texturing allows elements of an image array to be read by shaders.
|
|
</para>
|
|
<para>
|
|
<function>glTexSubImage2D</function> redefines a contiguous subregion of an existing two-dimensional
|
|
texture image.
|
|
The texels referenced by <parameter>data</parameter> replace the portion of the
|
|
existing texture array with x indices <parameter>xoffset</parameter> and
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: xoffset + width - 1: -->
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">xoffset</mml:mi>
|
|
<mml:mo>+</mml:mo>
|
|
<mml:mi mathvariant="italic">width</mml:mi>
|
|
<mml:mo>-</mml:mo>
|
|
<mml:mn>1</mml:mn>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
inclusive,
|
|
and y indices <parameter>yoffset</parameter> and
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: yoffset + height - 1: -->
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">yoffset</mml:mi>
|
|
<mml:mo>+</mml:mo>
|
|
<mml:mi mathvariant="italic">height</mml:mi>
|
|
<mml:mo>-</mml:mo>
|
|
<mml:mn>1</mml:mn>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
inclusive.
|
|
This region may not include any texels outside the range of the
|
|
texture array as it was originally specified.
|
|
It is not an error to specify a subtexture with zero width or height, but
|
|
such a specification has no effect.
|
|
</para>
|
|
<para>
|
|
If a non-zero named buffer object is bound to the <constant>GL_PIXEL_UNPACK_BUFFER</constant> target
|
|
(see <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>) while a texture image is
|
|
specified, <parameter>data</parameter> is treated as a byte offset into the buffer object's data store.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="notes"><title>Notes</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glPixelStorei</refentrytitle></citerefentry> modes affect texture images.
|
|
</para>
|
|
<para>
|
|
<function>glTexSubImage2D</function> specifies a two-dimensional subtexture for the texture object bound to the
|
|
current texture unit, specified with <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>target</parameter> is not <constant>GL_TEXTURE_2D</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_X</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_X</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_Y</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_Y</constant>,
|
|
<constant>GL_TEXTURE_CUBE_MAP_POSITIVE_Z</constant>, or
|
|
<constant>GL_TEXTURE_CUBE_MAP_NEGATIVE_Z</constant>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>format</parameter> is not an accepted
|
|
format constant.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>type</parameter> is not a type constant.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>level</parameter> is less than 0.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> may be generated if <parameter>level</parameter> is greater
|
|
than
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: log sub 2: -->
|
|
<mml:msub><mml:mi mathvariant="italic">log</mml:mi>
|
|
<mml:mn>2</mml:mn>
|
|
</mml:msub>
|
|
</mml:math></inlineequation>
|
|
<emphasis>max</emphasis>,
|
|
where <emphasis>max</emphasis> is the returned value of <constant>GL_MAX_TEXTURE_SIZE</constant>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: xoffset < 0: -->
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">xoffset</mml:mi>
|
|
<mml:mo><</mml:mo>
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">0</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: (xoffset + width) > w: -->
|
|
<mml:mrow>
|
|
<mml:mfenced open="(" close=")">
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">xoffset</mml:mi>
|
|
<mml:mo>+</mml:mo>
|
|
<mml:mi mathvariant="italic">width</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mfenced>
|
|
<mml:mo>></mml:mo>
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">w</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: yoffset < 0: -->
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">yoffset</mml:mi>
|
|
<mml:mo><</mml:mo>
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">0</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
or
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
|
|
<!-- eqn: (yoffset + height) > h: -->
|
|
<mml:mrow>
|
|
<mml:mfenced open="(" close=")">
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">yoffset</mml:mi>
|
|
<mml:mo>+</mml:mo>
|
|
<mml:mi mathvariant="italic">height</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mfenced>
|
|
<mml:mo>></mml:mo>
|
|
<mml:mrow>
|
|
<mml:mi mathvariant="italic">h</mml:mi>
|
|
</mml:mrow>
|
|
</mml:mrow>
|
|
</mml:math></inlineequation>,
|
|
where
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">w</mml:mi></mml:math></inlineequation>
|
|
is the <constant>GL_TEXTURE_WIDTH</constant>, and
|
|
<inlineequation><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">h</mml:mi></mml:math></inlineequation>
|
|
is the <constant>GL_TEXTURE_HEIGHT</constant>
|
|
of the texture image being modified.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>width</parameter> or <parameter>height</parameter> is less than 0.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if the texture array has not
|
|
been defined by a previous <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry> or
|
|
<citerefentry><refentrytitle>glTexStorage2D</refentrytitle></citerefentry> operation.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if the combination of <parameter>internalFormat</parameter> of the
|
|
previously specified texture array, <parameter>format</parameter> and <parameter>type</parameter> is not valid. See
|
|
<citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
|
|
<constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the buffer object's data store is currently mapped.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
|
|
<constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the data would be unpacked from the buffer
|
|
object such that the memory reads required would exceed the data store size.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
|
|
<constant>GL_PIXEL_UNPACK_BUFFER</constant> target and <parameter>data</parameter> is not evenly divisible
|
|
into the number of bytes needed to store in memory a datum indicated by <parameter>type</parameter>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="associatedgets"><title>Associated Gets</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="versions">
|
|
<title>API Version Support</title>
|
|
<informaltable>
|
|
<tgroup cols="4" align="left">
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apifunchead.xml" xpointer="xpointer(/*/*)"/>
|
|
<tbody>
|
|
<row>
|
|
<entry>glTexSubImage2D</entry>
|
|
<xi:include xmlns:xi="http://www.w3.org/2001/XInclude" href="apiversion.xml" xpointer="xpointer(/*/*[@role='es20']/*)"/>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
</refsect1>
|
|
<refsect1 xml:id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glCopyTexImage2D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glCopyTexSubImage2D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glCopyTexSubImage3D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glPixelStorei</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexStorage2D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexStorage3D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glTexParameter</refentrytitle></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 xml:id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"/> 1991-2006 Silicon Graphics, Inc.
|
|
Copyright <trademark class="copyright"/> 2010-2014 Khronos Group.
|
|
This document is licensed under the SGI Free Software B License.
|
|
For details, see
|
|
<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</link>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|