drm

package module

v0.0.1 Latest Latest Go to latest Published: Dec 18, 2023 License: BSD-1-Clause Imports: 8 Imported by: 0

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Valid go.mod file

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Repository

code.flowtr.dev/theos/drm

Links

Open Source Insights

README ¶

drm

The Direct Rendering Manager (DRM) is a kernel framework to manage Graphical Processing Units (GPU). It's a kernel abstractions to GPU drivers and a userspace API designed to support the needs of complex graphics devices.

DRM was first implemented on Linux but ported to FreeBSD, NetBSD and Solaris (others?). It's the lower level interface between opengl and the graphics card. With this Go library, theoretically, now it's possible to create a X server or a pure OpenGL library in Go (no bindings).

Rationale

Enables the creation of a graphics stack in Go, avoiding the overhead of the existing C bindings. Another possibility is using Go to make GPGPU (like opencl).

Examples

See the examples directory.

Documentation ¶

Overview ¶

Package drm provides a library to interact with DRM (Direct Rendering Manager) and KMS (Kernel Mode Setting) interfaces. DRM is a low level interface for the graphics card (gpu) and this package enables the creation of graphics library on top of the kernel drm/kms subsystem.

Index ¶

Constants
Variables
func GetCap(file *os.File, capid uint64) (uint64, error)
func HasDumbBuffer(file *os.File) bool
func OpenCard(n int) (*os.File, error)
func OpenControlDev(n int) (*os.File, error)
func OpenRenderDev(n int) (*os.File, error)
type Version

Constants ¶

View Source

const (
	CapDumbBuffer uint64 = iota + 1
	CapVBlankHighCRTC
	CapDumbPreferredDepth
	CapDumbPreferShadow
	CapPrime
	CapTimestampMonotonic
	CapAsyncPageFlip
	CapCursorWidth
	CapCursorHeight

	CapAddFB2Modifiers = 0x10
)

View Source

const IOCTLBase = 'd'

Variables ¶

View Source

var (
	// DRM_IOWR(0x00, struct drm_version)
	IOCTLVersion = ioctl.NewCode(ioctl.Read|ioctl.Write,
		uint16(unsafe.Sizeof(version{})), IOCTLBase, 0)

	// DRM_IOWR(0x0c, struct drm_get_cap)
	IOCTLGetCap = ioctl.NewCode(ioctl.Read|ioctl.Write,
		uint16(unsafe.Sizeof(capability{})), IOCTLBase, 0x0c)
)

Functions ¶

func GetCap ¶

func GetCap(file *os.File, capid uint64) (uint64, error)

func HasDumbBuffer ¶

func HasDumbBuffer(file *os.File) bool

func OpenCard ¶

func OpenCard(n int) (*os.File, error)

func OpenControlDev ¶

func OpenControlDev(n int) (*os.File, error)

func OpenRenderDev ¶

func OpenRenderDev(n int) (*os.File, error)

Types ¶

type Version ¶

type Version struct {
	Major, Minor, Patch int32
	Name                string // Name of the driver (eg.: i915)
	Date                string
	Desc                string
	// contains filtered or unexported fields
}

Version of DRM driver

func Available ¶

func Available() (Version, error)

func GetVersion ¶

func GetVersion(file *os.File) (Version, error)

func ListDevices ¶

func ListDevices() []Version

Source Files ¶

View all Source files

Directories ¶

Path	Synopsis
examples
draw
ioctl
mode Port of modeset.c example to Go Source: https://github.com/dvdhrm/docs/blob/master/drm-howto/modeset.c	Port of modeset.c example to Go Source: https://github.com/dvdhrm/docs/blob/master/drm-howto/modeset.c

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