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 ¶
Examples ¶
Constants ¶
const ( CapDumbBuffer uint64 = iota + 1 CapVBlankHighCRTC CapDumbPreferredDepth CapDumbPreferShadow CapPrime CapTimestampMonotonic CapAsyncPageFlip CapCursorWidth CapCursorHeight CapAddFB2Modifiers = 0x10 )
Variables ¶
This section is empty.
Functions ¶
func HasDumbBuffer ¶
Example ¶
package main
import (
"fmt"
"github.com/JesterSks/drm"
)
func main() {
// This example shows how to test if your graphics card
// supports 'dumb buffers' capability. With this capability
// you can create simple memory-mapped buffers without any
// driver-dependent code.
file, err := drm.OpenCard(0)
if err != nil {
fmt.Printf("error: %s", err.Error())
return
}
defer file.Close()
if !drm.HasDumbBuffer(file) {
fmt.Printf("drm device does not support dumb buffers")
return
}
fmt.Printf("ok")
}
Output: ok
Types ¶
type Version ¶
type Version struct {
internal.SysVersion
Major int32
Minor int32
Patch int32
Name string // Name of the driver (eg.: i915)
Date string
Desc string
}
Version of DRM driver
func ListDevices ¶
func ListDevices() []Version
Example ¶
package main
import (
"fmt"
"github.com/JesterSks/drm"
)
func main() {
// Shows how to enumerate the available dri devices
for _, dev := range drm.ListDevices() {
fmt.Printf("Driver name: %s\n", dev.Name)
}
}
Output: Driver name: i915
Source Files
Directories
¶
| Path | Synopsis |
|---|---|
|
_examples
|
|
|
draw
command
|
|
|
modeset
command
Port of modeset.c example to Go Source: https://github.com/dvdhrm/docs/blob/master/drm-howto/modeset-double-buffered.c
|
Port of modeset.c example to Go Source: https://github.com/dvdhrm/docs/blob/master/drm-howto/modeset-double-buffered.c |