virtscreen.h File Reference

#include <Drivers/virtio.h>
#include <stdint.h>

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Functions
int	virt_gpu_screen_init (VirtioCommonCfg *cfg, uint32_t width, uint32_t height)
	virt_gpu_screen_init – initialize screen
void	virt_gpu_alloc_fb (VirtioCommonCfg *cfg, int resource_id)
	virt_gpu_alloc_fb – allocate framebuffer for scanout
void	virt_gpu_set_scanout (VirtioCommonCfg *cfg, int resource_id, int scanout_id)
	virt_gpu_set_scanout – initialize the scanout to the given screen
void	virt_gpu_transfer_to_host2d (VirtioCommonCfg *cfg, int resource_id, int x, int y, int w, int h)
	virt_gpu_transfer_to_host2d – transfer buffers from guest to host
void	virt_gpu_flush (VirtioCommonCfg *cfg, int resource_id)
	virt_gpu_flush – flush graphics from guest to host
void	virt_gpu_fill_screen (uint32_t width, uint32_t height, uint32_t color)
	virt_gpu_fill_screen – fill the screen with specific color

Function Documentation

virt_gpu_alloc_fb()

void virt_gpu_alloc_fb ( VirtioCommonCfg *  cfg, int  resource_id  )

extern

virt_gpu_alloc_fb – allocate framebuffer for scanout

Parameters

cfg	– pointer to virtio common config
resource_id	– resource id number

virt_gpu_fill_screen()

void virt_gpu_fill_screen ( uint32_t  width, uint32_t  height, uint32_t  color  )

extern

virt_gpu_fill_screen – fill the screen with specific color

Parameters

width	– width of the screen
height	– height of the screen
color	– color to fill with

virt_gpu_flush()

void virt_gpu_flush ( VirtioCommonCfg *  cfg, int  resource_id  )

extern

virt_gpu_flush – flush graphics from guest to host

Parameters

cfg	– pointer to virtio common config
resource_id	– screen resource id

virt_gpu_screen_init()

int virt_gpu_screen_init ( VirtioCommonCfg *  cfg, uint32_t  width, uint32_t  height  )

extern

virt_gpu_screen_init – initialize screen

Parameters

cfg	– pointer to virtio common config
width	– width of the screen
height	– height of the screen

Returns

resource id allocated for this screen

virt_gpu_set_scanout()

void virt_gpu_set_scanout ( VirtioCommonCfg *  cfg, int  resource_id, int  scanout_id  )

extern

virt_gpu_set_scanout – initialize the scanout to the given screen

Parameters

cfg	– Pointer to virtio common config
resource_id	– screen resource id

virt_gpu_transfer_to_host2d()

void virt_gpu_transfer_to_host2d ( VirtioCommonCfg *  cfg, int  resource_id, int  x, int  y, int  w, int  h  )

extern

virt_gpu_transfer_to_host2d – transfer buffers from guest to host

Parameters

cfg	– Pointer to virtio common config
resource_id	– screen resource id
x	– X coord of the rect
y	– Y coord of the rect
w	– Width of the rect
h	– Height of the rect