Representation of an open DRM device, typically a GPU. More...

Detailed Description

Representation of an open DRM device, typically a GPU.

An SRMDevice represents a DRM device, typically a GPU, which can contain multiple connectors and a specific rendering mode (ITSELF, PRIME, DUMB or CPU).

Enumerations
enum	SRM_RENDER_MODE
	Rendering mode supported by an SRM device, listed from best to worst. More...

Functions
SRMCore *	srmDeviceGetCore (SRMDevice *device)
	Get the SRMCore instance to which this device belongs. More...

const char *	srmDeviceGetName (SRMDevice *device)
	Get the DRM device name (e.g., `/dev/dri/card0`) associated with this device. More...

Int32	srmDeviceGetFD (SRMDevice *device)
	Get the file descriptor of the DRM device associated with this device. More...

UInt8	srmDeviceGetClientCapStereo3D (SRMDevice *device)
	Get the client DRM driver's support for Stereo 3D capability. More...

UInt8	srmDeviceGetClientCapUniversalPlanes (SRMDevice *device)
	Get the client DRM driver's support for Universal Planes capability. More...

UInt8	srmDeviceGetClientCapAtomic (SRMDevice *device)
	Get the client DRM driver's support for Atomic API capability. More...

UInt8	srmDeviceGetClientCapAspectRatio (SRMDevice *device)
	Get the client DRM driver's support for Aspect Ratio capability. More...

UInt8	srmDeviceGetClientCapWritebackConnectors (SRMDevice *device)
	Get the client DRM driver's support for Writeback Connectors capability. More...

UInt8	srmDeviceGetCapDumbBuffer (SRMDevice *device)
	Get the driver's support for Dumb Buffer capability. More...

UInt8	srmDeviceGetCapPrimeImport (SRMDevice *device)
	Get the driver's support for Prime Import capability. More...

UInt8	srmDeviceGetCapPrimeExport (SRMDevice *device)
	Get the driver's support for Prime Export capability. More...

UInt8	srmDeviceGetCapAddFb2Modifiers (SRMDevice *device)
	Get the driver's support for Add FB2 Modifiers capability. More...

UInt8	srmDeviceGetCapAsyncPageFlip (SRMDevice *device)
	Get the driver's support for Async Page Flip capability. More...

UInt8	srmDeviceGetCapAtomicAsyncPageFlip (SRMDevice *device)
	Get the driver's support for Atomic Async Page Flip capability. More...

UInt8	srmDeviceGetCapTimestampMonotonic (SRMDevice *device)
	Retrieve the driver's support for monotonic timestamps. More...

UInt8	srmDeviceIsRenderer (SRMDevice *device)
	Check if the device can perform rendering. More...

SRMDevice *	srmDeviceGetRendererDevice (SRMDevice *device)
	Get the device that performs rendering for this device. More...

SRM_RENDER_MODE	srmDeviceGetRenderMode (SRMDevice *device)
	Get the rendering mode of the device. More...

SRMList *	srmDeviceGetCrtcs (SRMDevice *device)
	Get a list of CRTCs (Cathode Ray Tube Controllers) of this device. More...

SRMList *	srmDeviceGetEncoders (SRMDevice *device)
	Get a list of encoders of this device. More...

SRMList *	srmDeviceGetPlanes (SRMDevice *device)
	Get a list of planes of this device. More...

SRMList *	srmDeviceGetConnectors (SRMDevice *device)
	Get a list of connectors of this device. More...

SRMList *	srmDeviceGetDMATextureFormats (SRMDevice *device)
	Get a list of all DMA (Direct Memory Access) texture formats supported by the device. More...

SRMList *	srmDeviceGetDMARenderFormats (SRMDevice *device)
	Get a list of DMA (Direct Memory Access) render formats supported by the device. More...

SRMList *	srmDeviceGetDMAExternalFormats (SRMDevice *device)
	Get a list of DMA (Direct Memory Access) external formats supported by the device. More...

EGLDisplay *	srmDeviceGetEGLDisplay (SRMDevice *device)
	Get the `EGLDisplay` associated with the device. More...

EGLContext *	srmDeviceGetEGLContext (SRMDevice *device)
	Get the `EGLContext` associated with the device. More...

const SRMEGLDeviceExtensions *	srmDeviceGetEGLExtensions (SRMDevice *device)
	Returns a structure with boolean variables indicating which EGL extensions the device supports. More...

const SRMEGLDeviceFunctions *	srmDeviceGetEGLFunctions (SRMDevice *device)
	Returns a structure with pointers to many available EGL functions. More...

const SRMGLDeviceExtensions *	srmDeviceGetGLExtensions (SRMDevice *device)
	Returns a structure with boolean variables indicating which OpenGL extensions the device supports. More...

Typedef Documentation

◆ SRMDevice

typedef struct SRMDeviceStruct SRMDevice

Enumeration Type Documentation

◆ SRM_RENDER_MODE

enum SRM_RENDER_MODE

Rendering mode supported by an SRM device, listed from best to worst.

Enumerator
SRM_RENDER_MODE_ITSELF	The GPU can directly render into its own connectors (zero CPU involvement).
SRM_RENDER_MODE_PRIME	Another GPU renders into a PRIME buffer, which is then imported and directly scanned out or blitted into a scannable buffer (zero CPU involvement).
SRM_RENDER_MODE_DUMB	Another GPU renders into an offscreen buffer, which is then copied into a DUMB buffer (GPU to CPU copy).
SRM_RENDER_MODE_CPU	Another GPU renders into an offscreen buffer, which is then copied into main memory. A renderable texture is created from the pixels and blitted into a scannable buffer (GPU to CPU + CPU to GPU copy).

Function Documentation

◆ srmDeviceGetCore()

SRMCore* srmDeviceGetCore ( SRMDevice * device )

Get the SRMCore instance to which this device belongs.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the SRMCore instance that this device belongs to.

◆ srmDeviceGetName()

const char* srmDeviceGetName ( SRMDevice * device )

Get the DRM device name (e.g., /dev/dri/card0) associated with this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: The name of the DRM device associated with this SRMDevice.

◆ srmDeviceGetFD()

Int32 srmDeviceGetFD ( SRMDevice * device )

Get the file descriptor of the DRM device associated with this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: The file descriptor of the DRM device.

◆ srmDeviceGetClientCapStereo3D()

UInt8 srmDeviceGetClientCapStereo3D ( SRMDevice * device )

Get the client DRM driver's support for Stereo 3D capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the client DRM driver supports Stereo 3D capability, 0 otherwise.

◆ srmDeviceGetClientCapUniversalPlanes()

UInt8 srmDeviceGetClientCapUniversalPlanes ( SRMDevice * device )

Get the client DRM driver's support for Universal Planes capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the client DRM driver supports Universal Planes capability, 0 otherwise.

◆ srmDeviceGetClientCapAtomic()

UInt8 srmDeviceGetClientCapAtomic ( SRMDevice * device )

Get the client DRM driver's support for Atomic API capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the client DRM driver supports Atomic API capability, 0 otherwise.

Note: Setting the SRM_FORCE_LEGACY_API environment variable to 1, disables the Atomic API.

◆ srmDeviceGetClientCapAspectRatio()

UInt8 srmDeviceGetClientCapAspectRatio ( SRMDevice * device )

Get the client DRM driver's support for Aspect Ratio capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the client DRM driver supports Aspect Ratio capability, 0 otherwise.

◆ srmDeviceGetClientCapWritebackConnectors()

UInt8 srmDeviceGetClientCapWritebackConnectors ( SRMDevice * device )

Get the client DRM driver's support for Writeback Connectors capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the client DRM driver supports Writeback Connectors capability, 0 otherwise.

◆ srmDeviceGetCapDumbBuffer()

UInt8 srmDeviceGetCapDumbBuffer ( SRMDevice * device )

Get the driver's support for Dumb Buffer capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Dumb Buffer capability, 0 otherwise.

◆ srmDeviceGetCapPrimeImport()

UInt8 srmDeviceGetCapPrimeImport ( SRMDevice * device )

Get the driver's support for Prime Import capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Prime Import capability, 0 otherwise.

◆ srmDeviceGetCapPrimeExport()

UInt8 srmDeviceGetCapPrimeExport ( SRMDevice * device )

Get the driver's support for Prime Export capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Prime Export capability, 0 otherwise.

◆ srmDeviceGetCapAddFb2Modifiers()

UInt8 srmDeviceGetCapAddFb2Modifiers ( SRMDevice * device )

Get the driver's support for Add FB2 Modifiers capability.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Add FB2 Modifiers capability, 0 otherwise.

◆ srmDeviceGetCapAsyncPageFlip()

UInt8 srmDeviceGetCapAsyncPageFlip ( SRMDevice * device )

Get the driver's support for Async Page Flip capability.

Note: This specifically indicates support for the legacy API, no the atomic API

See also: srmDeviceGetCapAtomicAsyncPageFlip().

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Async Page Flip capability, 0 otherwise.

◆ srmDeviceGetCapAtomicAsyncPageFlip()

UInt8 srmDeviceGetCapAtomicAsyncPageFlip ( SRMDevice * device )

Get the driver's support for Atomic Async Page Flip capability.

Note: Atomic async page flips are supported since Linux 6.8.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device driver supports Atomic Async Page Flip capability, 0 otherwise.

◆ srmDeviceGetCapTimestampMonotonic()

UInt8 srmDeviceGetCapTimestampMonotonic ( SRMDevice * device )

Retrieve the driver's support for monotonic timestamps.

See also: srmConnectorGetPresentationClock(); srmConnectorGetPresentationTime()

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the DRM device reports vblank timestamps with CLOCK_MONOTONIC, 0 if it uses CLOCK_REALTIME.

◆ srmDeviceIsRenderer()

UInt8 srmDeviceIsRenderer ( SRMDevice * device )

Check if the device can perform rendering.

This function returns true when the device can import buffers from the allocator device, which also means it can perform rendering for other non-rendering devices.

Parameters

device A pointer to the SRMDevice instance.

Returns: 1 if the device is capable of rendering, 0 otherwise.

◆ srmDeviceGetRendererDevice()

SRMDevice* srmDeviceGetRendererDevice ( SRMDevice * device )

Get the device that performs rendering for this device.

The rendering device is equal to this device only when the ITSELF rendering mode is used.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the SRMDevice that performs rendering for this device.

◆ srmDeviceGetRenderMode()

SRM_RENDER_MODE srmDeviceGetRenderMode ( SRMDevice * device )

Get the rendering mode of the device.

If the rendering device is equal to this device, then the rendering mode is ITSELF.

Parameters

device A pointer to the SRMDevice instance.

Returns: The rendering mode of the device (SRM_RENDER_MODE).

◆ srmDeviceGetCrtcs()

SRMList* srmDeviceGetCrtcs ( SRMDevice * device )

Get a list of CRTCs (Cathode Ray Tube Controllers) of this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of pointers to the CRTCs (SRMCrtc) associated with this device.

◆ srmDeviceGetEncoders()

SRMList* srmDeviceGetEncoders ( SRMDevice * device )

Get a list of encoders of this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of pointers to the encoders (SRMEncoder) associated with this device.

◆ srmDeviceGetPlanes()

SRMList* srmDeviceGetPlanes ( SRMDevice * device )

Get a list of planes of this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of pointers to the planes (SRMPlane) associated with this device.

◆ srmDeviceGetConnectors()

SRMList* srmDeviceGetConnectors ( SRMDevice * device )

Get a list of connectors of this device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of pointers to the connectors (SRMConnector) associated with this device.

◆ srmDeviceGetDMATextureFormats()

SRMList* srmDeviceGetDMATextureFormats ( SRMDevice * device )

Get a list of all DMA (Direct Memory Access) texture formats supported by the device.

Note: This list includes both render and external formats.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of DMA texture formats supported by the device.

◆ srmDeviceGetDMARenderFormats()

SRMList* srmDeviceGetDMARenderFormats ( SRMDevice * device )

Get a list of DMA (Direct Memory Access) render formats supported by the device.

Note: Render formats have the GL_TEXTURE_2D target.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of DMA render formats supported by the device.

◆ srmDeviceGetDMAExternalFormats()

SRMList* srmDeviceGetDMAExternalFormats ( SRMDevice * device )

Get a list of DMA (Direct Memory Access) external formats supported by the device.

Note: External formats have the GL_TEXTURE_EXTERNAL_OES target.

Parameters

device A pointer to the SRMDevice instance.

Returns: A list of DMA external formats supported by the device.

◆ srmDeviceGetEGLDisplay()

EGLDisplay* srmDeviceGetEGLDisplay ( SRMDevice * device )

Get the EGLDisplay associated with the device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the EGLDisplay associated with the device.

◆ srmDeviceGetEGLContext()

EGLContext* srmDeviceGetEGLContext ( SRMDevice * device )

Get the EGLContext associated with the device.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the EGLContext associated with the device.

◆ srmDeviceGetEGLExtensions()

const SRMEGLDeviceExtensions* srmDeviceGetEGLExtensions ( SRMDevice * device )

Returns a structure with boolean variables indicating which EGL extensions the device supports.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the SRMEGLDeviceExtensions structure indicating the supported EGL extensions.

◆ srmDeviceGetEGLFunctions()

const SRMEGLDeviceFunctions* srmDeviceGetEGLFunctions ( SRMDevice * device )

Returns a structure with pointers to many available EGL functions.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the SRMEGLDeviceFunctions structure containing pointers to avaliable EGL functions.

◆ srmDeviceGetGLExtensions()

const SRMGLDeviceExtensions* srmDeviceGetGLExtensions ( SRMDevice * device )

Returns a structure with boolean variables indicating which OpenGL extensions the device supports.

Parameters

device A pointer to the SRMDevice instance.

Returns: A pointer to the SRMGLDeviceExtensions structure indicating the supported OpenGL extensions.

Detailed Description

Enumerations

Functions

Typedef Documentation

◆ SRMDevice

Enumeration Type Documentation

◆ SRM_RENDER_MODE

Function Documentation

◆ srmDeviceGetCore()

◆ srmDeviceGetName()

◆ srmDeviceGetFD()

◆ srmDeviceGetClientCapStereo3D()

◆ srmDeviceGetClientCapUniversalPlanes()

◆ srmDeviceGetClientCapAtomic()

◆ srmDeviceGetClientCapAspectRatio()

◆ srmDeviceGetClientCapWritebackConnectors()

◆ srmDeviceGetCapDumbBuffer()

◆ srmDeviceGetCapPrimeImport()

◆ srmDeviceGetCapPrimeExport()

◆ srmDeviceGetCapAddFb2Modifiers()

◆ srmDeviceGetCapAsyncPageFlip()

◆ srmDeviceGetCapAtomicAsyncPageFlip()

◆ srmDeviceGetCapTimestampMonotonic()

◆ srmDeviceIsRenderer()

◆ srmDeviceGetRendererDevice()

◆ srmDeviceGetRenderMode()

◆ srmDeviceGetCrtcs()

◆ srmDeviceGetEncoders()

◆ srmDeviceGetPlanes()

◆ srmDeviceGetConnectors()

◆ srmDeviceGetDMATextureFormats()

◆ srmDeviceGetDMARenderFormats()

◆ srmDeviceGetDMAExternalFormats()

◆ srmDeviceGetEGLDisplay()

◆ srmDeviceGetEGLContext()

◆ srmDeviceGetEGLExtensions()

◆ srmDeviceGetEGLFunctions()

◆ srmDeviceGetGLExtensions()