CAST II Game Engine

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Unit

Declaration

type TDX8Buffers = class(TAPIBuffers)

Description

Hierarchy

Methods

Overview

	function AttachIndexBuffer(Index: Integer; StartingVertex: Integer): Boolean; override;
	function AttachVertexBuffer(Index, StreamIndex: Integer; VertexSize: Integer): Boolean; override;
	procedure Clear; override;
	function CreateIndexBuffer(Size: Integer; Static: Boolean): Integer; override;
	function CreateVertexBuffer(Size: Integer; Static: Boolean): Integer; override;
	function GetFVF(CastVertexFormat: Cardinal): Cardinal; override;
	function LockIndexBuffer(Index: Integer; Offset, Size: Integer; DiscardExisting: Boolean): Pointer; override;
	function LockVertexBuffer(Index: Integer; Offset, Size: Integer; DiscardExisting: Boolean): Pointer; override;
	function ResizeIndexBuffer(Index: Integer; NewSize: Integer): Boolean; override;
	function ResizeVertexBuffer(Index: Integer; NewSize: Integer): Boolean; override;
	procedure UnlockIndexBuffer(Index: Integer); override;
	procedure UnlockVertexBuffer(Index: Integer); override;

Description

function AttachIndexBuffer(Index: Integer; StartingVertex: Integer): Boolean; override;

Attaches an index buffer and returns True if success. StartingVertex will be added to all indices read from the index buffer.

function AttachVertexBuffer(Index, StreamIndex: Integer; VertexSize: Integer): Boolean; override;

Attaches a vertex buffer to the specified data stream and returns True if success. VertexSize should match the size of the data in the buffer.

procedure Clear; override;

Frees all allocated buffers. All internal indices returned before this call become invalid.

function CreateIndexBuffer(Size: Integer; Static: Boolean): Integer; override;

Creates an index buffer with the given size in bytes and returns its internal index or -1 if creation fails If Static is False the buffer will be optimized to store dynamic data.

function CreateVertexBuffer(Size: Integer; Static: Boolean): Integer; override;

Creates a vertex buffer with the given size in bytes and returns its internal index or -1 if creation fails. If Static is False the buffer will be optimized to store dynamic geometry.

function GetFVF(CastVertexFormat: Cardinal): Cardinal; override;

Returns a flexible vrtex format code from CAST vertex format

function LockIndexBuffer(Index: Integer; Offset, Size: Integer; DiscardExisting: Boolean): Pointer; override;

Locks the given range in a index buffer with the given index and returns a write-only pointer to the range data or nil if lock fails. If DiscardExisting is True existing data in the buffer will be discarded to avoid stalls.

function LockVertexBuffer(Index: Integer; Offset, Size: Integer; DiscardExisting: Boolean): Pointer; override;

Locks the given range in a vertex buffer with the given index and returns a write-only pointer to the range data or nil if lock fails. If DiscardExisting is True existing data in the buffer will be discarded to avoid stalls.

function ResizeIndexBuffer(Index: Integer; NewSize: Integer): Boolean; override;

Changes size of the given index buffer to the given size and returns True if success

function ResizeVertexBuffer(Index: Integer; NewSize: Integer): Boolean; override;

Changes size of the given vertex buffer to the given size and returns True if success

procedure UnlockIndexBuffer(Index: Integer); override;

Unlocks a previously locked index buffer

procedure UnlockVertexBuffer(Index: Integer); override;

Unlocks a previously locked vertex buffer