glTexImage2D协议参数

如何从C函数参数转换为基础协议期望的参数？

我正在尝试在协议级别上实现glTexImage2D。

glxproto.pdf描述了这样的参数：

TexImage2D
2 56+n+p rendering command length
2 110 rendering command opcode
1 BOOL swapbytes
1 BOOL lsbfirst
2 unused
4 CARD32 rowlength
4 CARD32 skiprows
4 CARD32 skippixels
4 CARD32 alignment
4 ENUM target
4 INT32 level
4 INT32 components
4 INT32 width
4 INT32 height
4 INT32 border
4 ENUM format
4 ENUM type
n LISTofBYTE image
p unused,p=pad(n)

现在OpenGL官方文档http://www.opengl.org/sdk/docs/man/xhtml/glTexImage2D.xml对此描述如下：

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.

问题在于它们是不同的！

数据，边框，宽度，高度，级别都可以，它们相同并说明。

swapbytes，lsbfirst，skirows，skippixels，alignment，rowlength，组件-它们是什么？

internalFormat去哪里？

我试图找到某人的实现，但是没有运气。我尝试了XCB源，Mesa源，Node.js-x11。我无法找到正确的路线。