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gallium

Index


BltPipeResourceRastPort() CreatePipe() CreatePipeScreen() DestroyPipeScreen()

BltPipeResourceRastPort()

Synopsis

void BltPipeResourceRastPort(
         PipeHandle_t pipe,
         struct pipe_resource * srcPipeResource,
         LONG xSrc,
         LONG ySrc,
         struct RastPort * destRP,
         LONG xDest,
         LONG yDest,
         LONG xSize,
         LONG ySize );

Function

Copies part of pipe resource onto rast port. Clips output by using layers of
rastport.

Inputs

srcPipeResource - Copy from this pipe resource.
xSrc, ySrc - This is the upper left corner of the area to copy.
destRP - Destination RastPort.
xDest, yDest - Upper left corner where to place the copy
xSize, ySize - The size of the area to copy

CreatePipe()

Synopsis

PipeHandle_t CreatePipe(
         struct TagItem * tags );

PipeHandle_t CreatePipeTags(
         TAG tag, ... );

Function

Instantiates a gallium pipe.

Inputs

tags - a pointer to tags to be used during creation.

Tags

CPS_PipeFriendBitmap - a bitmap our pipe screen will target.
CPS_PipeScreenDriver * - where to store the driver.
CPS_GalliumInterfaceVersion - Indicates a version of gallium interface
    that a client is expected to receive. The client expected version
    must ideally match with the version that the driver provides,
    because gallium interface is not backwards compatible. This tag is
    required. Unless otherwise needed, the value
    GALLIUM_INTERFACE_VERSION should be passed.
    See also CreatePipeV.

Result

A valid pipe instance or NULL if creation was not successful.

CreatePipeScreen()

Synopsis

struct pipe_screen * CreatePipeScreen(
         PipeHandle_t pipe );

Function

Creates a gallium pipe screen.

Inputs

pipe - a pipe handle created using CreatePipe().

Result

A valid pipe screen instance or NULL if creation was not successful.

DestroyPipeScreen()

Synopsis

void DestroyPipeScreen(
         PipeHandle_t pipe,
         struct pipe_screen * pscreen );

Function

Disposes the pipe screen

Inputs

handle - a pointer to pipe screen structure. A NULL pointer will be
    ignored.

Result

The pipe screen is freed. Don't use it anymore.

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