Provided by: opengl-4-man-doc_1.0~svn31251-1build1_all 
NAME
glTexImage2D - specify a two-dimensional texture image
C SPECIFICATION
void glTexImage2D(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height,
GLint border, GLenum format, GLenum type, const GLvoid * data);
PARAMETERS
target
Specifies the target texture. Must be GL_TEXTURE_2D, GL_PROXY_TEXTURE_2D, GL_TEXTURE_1D_ARRAY,
GL_PROXY_TEXTURE_1D_ARRAY, GL_TEXTURE_RECTANGLE, GL_PROXY_TEXTURE_RECTANGLE,
GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, or
GL_PROXY_TEXTURE_CUBE_MAP.
level
Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap
reduction image. If target is GL_TEXTURE_RECTANGLE or GL_PROXY_TEXTURE_RECTANGLE, level must be 0.
internalFormat
Specifies the number of color components in the texture. Must be one of base internal formats given
in Table 1, one of the sized internal formats given in Table 2, or one of the compressed internal
formats given in Table 3, below.
width
Specifies the width of the texture image. All implementations support texture images that are at
least 1024 texels wide.
height
Specifies the height of the texture image, or the number of layers in a texture array, in the case of
the GL_TEXTURE_1D_ARRAY and GL_PROXY_TEXTURE_1D_ARRAY targets. All implementations support 2D texture
images that are at least 1024 texels high, and texture arrays that are at least 256 layers deep.
border
This value must be 0.
format
Specifies the format of the pixel data. The following symbolic values are accepted: GL_RED, GL_RG,
GL_RGB, GL_BGR, GL_RGBA, GL_BGRA, GL_RED_INTEGER, GL_RG_INTEGER, GL_RGB_INTEGER, GL_BGR_INTEGER,
GL_RGBA_INTEGER, GL_BGRA_INTEGER, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT, GL_DEPTH_STENCIL.
type
Specifies the data type of the pixel data. The following symbolic values are accepted:
GL_UNSIGNED_BYTE, GL_BYTE, GL_UNSIGNED_SHORT, GL_SHORT, GL_UNSIGNED_INT, GL_INT, GL_FLOAT,
GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV, GL_UNSIGNED_SHORT_5_6_5,
GL_UNSIGNED_SHORT_5_6_5_REV, GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_4_4_4_4_REV,
GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_UNSIGNED_INT_8_8_8_8,
GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2, and GL_UNSIGNED_INT_2_10_10_10_REV.
data
Specifies a pointer to the image data in memory.
DESCRIPTION
Texturing allows elements of an image array to be read by shaders.
To define texture images, call glTexImage2D. The arguments describe the parameters of the texture image,
such as height, width, width of the border, level-of-detail number (see glTexParameter()), and number of
color components provided. The last three arguments describe how the image is represented in memory.
If target is GL_PROXY_TEXTURE_2D, GL_PROXY_TEXTURE_1D_ARRAY, GL_PROXY_TEXTURE_CUBE_MAP, or
GL_PROXY_TEXTURE_RECTANGLE, no data is read from data, but all of the texture image state is
recalculated, checked for consistency, and checked against the implementation's capabilities. If the
implementation cannot handle a texture of the requested texture size, it sets all of the image state to
0, but does not generate an error (see glGetError()). To query for an entire mipmap array, use an image
array level greater than or equal to 1.
If target is GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE or one of the GL_TEXTURE_CUBE_MAP targets, data is read
from data as a sequence of signed or unsigned bytes, shorts, or longs, or single-precision floating-point
values, depending on type. These values are grouped into sets of one, two, three, or four values,
depending on format, to form elements. Each data byte is treated as eight 1-bit elements, with bit
ordering determined by GL_UNPACK_LSB_FIRST (see glPixelStore()).
If target is GL_TEXTURE_1D_ARRAY, data is interpreted as an array of one-dimensional images.
If a non-zero named buffer object is bound to the GL_PIXEL_UNPACK_BUFFER target (see glBindBuffer())
while a texture image is specified, data is treated as a byte offset into the buffer object's data store.
The first element corresponds to the lower left corner of the texture image. Subsequent elements progress
left-to-right through the remaining texels in the lowest row of the texture image, and then in
successively higher rows of the texture image. The final element corresponds to the upper right corner of
the texture image.
format determines the composition of each element in data. It can assume one of these symbolic values:
GL_RED
Each element is a single red component. The GL converts it to floating point and assembles it into an
RGBA element by attaching 0 for green and blue, and 1 for alpha. Each component is clamped to the
range [0,1].
GL_RG
Each element is a red/green double. The GL converts it to floating point and assembles it into an
RGBA element by attaching 0 for blue, and 1 for alpha. Each component is clamped to the range [0,1].
GL_RGB, GL_BGR
Each element is an RGB triple. The GL converts it to floating point and assembles it into an RGBA
element by attaching 1 for alpha. Each component is clamped to the range [0,1].
GL_RGBA, GL_BGRA
Each element contains all four components. Each component is clamped to the range [0,1].
GL_DEPTH_COMPONENT
Each element is a single depth value. The GL converts it to floating point and clamps to the range
[0,1].
GL_DEPTH_STENCIL
Each element is a pair of depth and stencil values. The depth component of the pair is interpreted as
in GL_DEPTH_COMPONENT. The stencil component is interpreted based on specified the depth + stencil
internal format.
If an application wants to store the texture at a certain resolution or in a certain format, it can
request the resolution and format with internalFormat. The GL will choose an internal representation that
closely approximates that requested by internalFormat, but it may not match exactly. (The representations
specified by GL_RED, GL_RG, GL_RGB, and GL_RGBA must match exactly.)
internalFormat may be one of the base internal formats shown in Table 1, below
Table 1. Base Internal Formats
┌──────────────────────┬─────────────────────────┬─────────────────────┐
│ Base Internal Format │ RGBA, Depth and Stencil │ Internal Components │
│ │ Values │ │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_DEPTH_COMPONENT │ Depth │ D │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_DEPTH_STENCIL │ Depth, Stencil │ D, S │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_RED │ Red │ R │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_RG │ Red, Green │ R, G │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_RGB │ Red, Green, Blue │ R, G, B │
├──────────────────────┼─────────────────────────┼─────────────────────┤
│ GL_RGBA │ Red, Green, Blue, Alpha │ R, G, B, A │
└──────────────────────┴─────────────────────────┴─────────────────────┘
internalFormat may also be one of the sized internal formats shown in Table 2, below
Table 2. Sized Internal Formats
┌───────────────────┬───────────────┬──────────┬────────────┬───────────┬────────────┬─────────────┐
│ Sized Internal │ Base Internal │ Red Bits │ Green Bits │ Blue Bits │ Alpha Bits │ Shared Bits │
│ Format │ Format │ │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R8 │ GL_RED │ 8 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R8_SNORM │ GL_RED │ s8 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R16 │ GL_RED │ 16 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R16_SNORM │ GL_RED │ s16 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG8 │ GL_RG │ 8 │ 8 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG8_SNORM │ GL_RG │ s8 │ s8 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG16 │ GL_RG │ 16 │ 16 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG16_SNORM │ GL_RG │ s16 │ s16 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R3_G3_B2 │ GL_RGB │ 3 │ 3 │ 2 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB4 │ GL_RGB │ 4 │ 4 │ 4 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB5 │ GL_RGB │ 5 │ 5 │ 5 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB8 │ GL_RGB │ 8 │ 8 │ 8 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB8_SNORM │ GL_RGB │ s8 │ s8 │ s8 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB10 │ GL_RGB │ 10 │ 10 │ 10 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB12 │ GL_RGB │ 12 │ 12 │ 12 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB16_SNORM │ GL_RGB │ 16 │ 16 │ 16 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA2 │ GL_RGB │ 2 │ 2 │ 2 │ 2 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA4 │ GL_RGB │ 4 │ 4 │ 4 │ 4 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB5_A1 │ GL_RGBA │ 5 │ 5 │ 5 │ 1 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA8 │ GL_RGBA │ 8 │ 8 │ 8 │ 8 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA8_SNORM │ GL_RGBA │ s8 │ s8 │ s8 │ s8 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB10_A2 │ GL_RGBA │ 10 │ 10 │ 10 │ 2 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB10_A2UI │ GL_RGBA │ ui10 │ ui10 │ ui10 │ ui2 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA12 │ GL_RGBA │ 12 │ 12 │ 12 │ 12 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA16 │ GL_RGBA │ 16 │ 16 │ 16 │ 16 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_SRGB8 │ GL_RGB │ 8 │ 8 │ 8 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_SRGB8_ALPHA8 │ GL_RGBA │ 8 │ 8 │ 8 │ 8 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R16F │ GL_RED │ f16 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG16F │ GL_RG │ f16 │ f16 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB16F │ GL_RGB │ f16 │ f16 │ f16 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA16F │ GL_RGBA │ f16 │ f16 │ f16 │ f16 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R32F │ GL_RED │ f32 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG32F │ GL_RG │ f32 │ f32 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB32F │ GL_RGB │ f32 │ f32 │ f32 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA32F │ GL_RGBA │ f32 │ f32 │ f32 │ f32 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R11F_G11F_B10F │ GL_RGB │ f11 │ f11 │ f10 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB9_E5 │ GL_RGB │ 9 │ 9 │ 9 │ │ 5 │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R8I │ GL_RED │ i8 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R8UI │ GL_RED │ ui8 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R16I │ GL_RED │ i16 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R16UI │ GL_RED │ ui16 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R32I │ GL_RED │ i32 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_R32UI │ GL_RED │ ui32 │ │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG8I │ GL_RG │ i8 │ i8 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG8UI │ GL_RG │ ui8 │ ui8 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG16I │ GL_RG │ i16 │ i16 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG16UI │ GL_RG │ ui16 │ ui16 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG32I │ GL_RG │ i32 │ i32 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RG32UI │ GL_RG │ ui32 │ ui32 │ │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB8I │ GL_RGB │ i8 │ i8 │ i8 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB8UI │ GL_RGB │ ui8 │ ui8 │ ui8 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB16I │ GL_RGB │ i16 │ i16 │ i16 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB16UI │ GL_RGB │ ui16 │ ui16 │ ui16 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB32I │ GL_RGB │ i32 │ i32 │ i32 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGB32UI │ GL_RGB │ ui32 │ ui32 │ ui32 │ │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA8I │ GL_RGBA │ i8 │ i8 │ i8 │ i8 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA8UI │ GL_RGBA │ ui8 │ ui8 │ ui8 │ ui8 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA16I │ GL_RGBA │ i16 │ i16 │ i16 │ i16 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA16UI │ GL_RGBA │ ui16 │ ui16 │ ui16 │ ui16 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA32I │ GL_RGBA │ i32 │ i32 │ i32 │ i32 │ │
├───────────────────┼───────────────┼──────────┼────────────┼───────────┼────────────┼─────────────┤
│ GL_RGBA32UI │ GL_RGBA │ ui32 │ ui32 │ ui32 │ ui32 │ │
└───────────────────┴───────────────┴──────────┴────────────┴───────────┴────────────┴─────────────┘
Finally, internalFormat may also be one of the generic or compressed compressed texture formats shown in
Table 3 below
Table 3. Compressed Internal Formats
┌───────────────────────────────────────┬──────────────────────┬──────────┐
│ Compressed Internal Format │ Base Internal Format │ Type │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RED │ GL_RED │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RG │ GL_RG │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RGB │ GL_RGB │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RGBA │ GL_RGBA │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_SRGB │ GL_RGB │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_SRGB_ALPHA │ GL_RGBA │ Generic │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RED_RGTC1 │ GL_RED │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_SIGNED_RED_RGTC1 │ GL_RED │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RG_RGTC2 │ GL_RG │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_SIGNED_RG_RGTC2 │ GL_RG │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RGBA_BPTC_UNORM │ GL_RGBA │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_SRGB_ALPHA_BPTC_UNORM │ GL_RGBA │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RGB_BPTC_SIGNED_FLOAT │ GL_RGB │ Specific │
├───────────────────────────────────────┼──────────────────────┼──────────┤
│ GL_COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT │ GL_RGB │ Specific │
└───────────────────────────────────────┴──────────────────────┴──────────┘
If the internalFormat parameter is one of the generic compressed formats, GL_COMPRESSED_RED,
GL_COMPRESSED_RG, GL_COMPRESSED_RGB, or GL_COMPRESSED_RGBA, the GL will replace the internal format with
the symbolic constant for a specific internal format and compress the texture before storage. If no
corresponding internal format is available, or the GL can not compress that image for any reason, the
internal format is instead replaced with a corresponding base internal format.
If the internalFormat parameter is GL_SRGB, GL_SRGB8, GL_SRGB_ALPHA, or GL_SRGB8_ALPHA8, the texture is
treated as if the red, green, or blue components are encoded in the sRGB color space. Any alpha component
is left unchanged. The conversion from the sRGB encoded component c s to a linear component c l is:
c l = { c s 12.92 if c s ≤ 0.04045 ( c s + 0.055 1.055 ) 2.4 if c s > 0.04045
Assume c s is the sRGB component in the range [0,1].
Use the GL_PROXY_TEXTURE_2D, GL_PROXY_TEXTURE_1D_ARRAY, GL_PROXY_TEXTURE_RECTANGLE, or
GL_PROXY_TEXTURE_CUBE_MAP target to try out a resolution and format. The implementation will update and
recompute its best match for the requested storage resolution and format. To then query this state, call
glGetTexLevelParameter(). If the texture cannot be accommodated, texture state is set to 0.
A one-component texture image uses only the red component of the RGBA color extracted from data. A
two-component image uses the R and G values. A three-component image uses the R, G, and B values. A
four-component image uses all of the RGBA components.
Image-based shadowing can be enabled by comparing texture r coordinates to depth texture values to
generate a boolean result. See glTexParameter() for details on texture comparison.
NOTES
The glPixelStore() mode affects texture images.
data may be a null pointer. In this case, texture memory is allocated to accommodate a texture of width
width and height height. You can then download subtextures to initialize this texture memory. The image
is undefined if the user tries to apply an uninitialized portion of the texture image to a primitive.
glTexImage2D specifies the two-dimensional texture for the current texture unit, specified with
glActiveTexture().
GL_STENCIL_INDEX may be used for format only if the GL version is 4.4 or higher.
ERRORS
GL_INVALID_ENUM is generated if target is not GL_TEXTURE_2D, GL_TEXTURE_1D_ARRAY, GL_TEXTURE_RECTANGLE,
GL_PROXY_TEXTURE_2D, GL_PROXY_TEXTURE_1D_ARRAY, GL_PROXY_TEXTURE_RECTANGLE, GL_PROXY_TEXTURE_CUBE_MAP,
GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y,
GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, or GL_TEXTURE_CUBE_MAP_NEGATIVE_Z.
GL_INVALID_ENUM is generated if target is one of the six cube map 2D image targets and the width and
height parameters are not equal.
GL_INVALID_ENUM is generated if type is not a type constant.
GL_INVALID_VALUE is generated if width is less than 0 or greater than GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if target is not GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY and
height is less than 0 or greater than GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if target is GL_TEXTURE_1D_ARRAY or GL_PROXY_TEXTURE_1D_ARRAY and height is
less than 0 or greater than GL_MAX_ARRAY_TEXTURE_LAYERS.
GL_INVALID_VALUE is generated if level is less than 0.
GL_INVALID_VALUE may be generated if level is greater than log 2 max, where max is the returned value
of GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if internalFormat is not one of the accepted resolution and format symbolic
constants.
GL_INVALID_VALUE is generated if width or height is less than 0 or greater than GL_MAX_TEXTURE_SIZE.
GL_INVALID_VALUE is generated if border is not 0.
GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_BYTE_3_3_2, GL_UNSIGNED_BYTE_2_3_3_REV,
GL_UNSIGNED_SHORT_5_6_5, GL_UNSIGNED_SHORT_5_6_5_REV, or GL_UNSIGNED_INT_10F_11F_11F_REV, and format is
not GL_RGB.
GL_INVALID_OPERATION is generated if type is one of GL_UNSIGNED_SHORT_4_4_4_4,
GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_UNSIGNED_SHORT_5_5_5_1, GL_UNSIGNED_SHORT_1_5_5_5_REV,
GL_UNSIGNED_INT_8_8_8_8, GL_UNSIGNED_INT_8_8_8_8_REV, GL_UNSIGNED_INT_10_10_10_2,
GL_UNSIGNED_INT_2_10_10_10_REV, or GL_UNSIGNED_INT_5_9_9_9_REV, and format is neither GL_RGBA nor
GL_BGRA.
GL_INVALID_OPERATION is generated if target is not GL_TEXTURE_2D, GL_PROXY_TEXTURE_2D,
GL_TEXTURE_RECTANGLE, or GL_PROXY_TEXTURE_RECTANGLE, and internalFormat is GL_DEPTH_COMPONENT,
GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24, or GL_DEPTH_COMPONENT32F.
GL_INVALID_OPERATION is generated if format is GL_DEPTH_COMPONENT and internalFormat is not
GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16, GL_DEPTH_COMPONENT24, or GL_DEPTH_COMPONENT32F.
GL_INVALID_OPERATION is generated if internalFormat is GL_DEPTH_COMPONENT, GL_DEPTH_COMPONENT16,
GL_DEPTH_COMPONENT24, or GL_DEPTH_COMPONENT32F, and format is not GL_DEPTH_COMPONENT.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER
target and the buffer object's data store is currently mapped.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER
target and the data would be unpacked from the buffer object such that the memory reads required would
exceed the data store size.
GL_INVALID_OPERATION is generated if a non-zero buffer object name is bound to the GL_PIXEL_UNPACK_BUFFER
target and data is not evenly divisible into the number of bytes needed to store in memory a datum
indicated by type.
GL_INVALID_VALUE is generated if target is GL_TEXTURE_RECTANGLE or GL_PROXY_TEXTURE_RECTANGLE and level
is not 0.
ASSOCIATED GETS
glGetTexImage()
glGet() with argument GL_PIXEL_UNPACK_BUFFER_BINDING
VERSION SUPPORT
┌──────────────┬───────────────────────────────────────────────────────────────────────┐
│ │ OpenGL Version │
├──────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
│ Function │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
│ / │ │ │ │ │ │ │ │ │ │ │ │ │
│ Feature │ │ │ │ │ │ │ │ │ │ │ │ │
│ Name │ │ │ │ │ │ │ │ │ │ │ │ │
├──────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
│ glTexImage2D │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │ ✔ │
└──────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘
SEE ALSO
glActiveTexture(), glCopyTexImage1D(), glCopyTexImage2D(), glCopyTexSubImage1D(), glCopyTexSubImage2D(),
glCopyTexSubImage3D(), glPixelStore(), glTexImage1D(), glTexImage3D(), glTexSubImage1D(),
glTexSubImage2D(), glTexSubImage3D(), glTexParameter()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2011-2014 Khronos Group. This document is
licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc.
[FIXME: source] 07/22/2015 GLTEXIMAGE2D(3G)