RGLFormat Struct Reference

OpenGL ES pixel format descriptor mapped from a DRM format. More...

#include <RGLFormat.h>

Static Public Member Functions
static const RGLFormat *	FromDRM (RFormat format) noexcept
	Returns the GL format descriptor for a given DRM fourcc format.

Public Attributes
GLint	format
	Client pixel format (e.g. GL_RGBA, GL_BGRA_EXT, GL_ALPHA).
GLint	internalFormat
	Sized internal format (e.g. GL_RGBA8_OES, GL_BGRA8_EXT).
GLint	type
	Component data type (e.g. GL_UNSIGNED_BYTE, GL_HALF_FLOAT_OES).

Detailed Description

OpenGL ES pixel format descriptor mapped from a DRM format.

Bundles the three arguments GLES needs to describe a pixel layout in calls such as glTexImage2D()/glReadPixels(): the client-side format, the sized internal format, and the component type.

Member Function Documentation

FromDRM()

static const RGLFormat * FromDRM ( RFormat  format )

staticnoexcept

Returns the GL format descriptor for a given DRM fourcc format.

Parameters

format

A DRM fourcc format code.

Returns

A pointer to a static RGLFormat describing the GL layout, or nullptr if the DRM format has no known GL mapping. Some mappings are only available on little-endian hosts.

Member Data Documentation

format

GLint format

Client pixel format (e.g. GL_RGBA, GL_BGRA_EXT, GL_ALPHA).

internalFormat

GLint internalFormat

Sized internal format (e.g. GL_RGBA8_OES, GL_BGRA8_EXT).

type

GLint type

Component data type (e.g. GL_UNSIGNED_BYTE, GL_HALF_FLOAT_OES).