MQL5 ReferenceWorking with DirectX

Working with DirectX

DirectX 11 functions and shaders are designed for 3D visualization directly on a price chart.

Creating 3D graphics requires a graphic context (DXContextCreate) with the necessary image size. Besides, it is necessary to prepare vertex and index buffers (DXBufferCreate), as well as create vertex and pixel shaders (DXShaderCreate). This is enough to display graphics in color.

The next level of graphics requires the inputs (DXInputSet) for passing additional rendering parameters to shaders. This allows setting the camera and 3D object positions, describe light sources and implement mouse and keyboard control.

Thus, the built-in MQL5 functions enable you to create animated 3D charts directly in MetaTrader 5 with no need for third-party tools. A video card should support DX 11 and Shader Model 5.0 for the functions to work.

To start working with the library, simply read the article How to create 3D graphics using DirectX in MetaTrader 5.

Function	Action
DXContextCreate	Creates a graphic context for rendering frames of a specified size
DXContextSetSize	Changes a frame size of a graphic context created in DXContextCreate()
DXContextSetSize	Gets a frame size of a graphic context created in DXContextCreate()
DXContextClearColors	Sets a specified color to all pixels for the rendering buffer
DXContextClearDepth	Clears the depth buffer
DXContextGetColors	Gets an image of a specified size and offset from a graphic context
DXContextGetDepth	Gets the depth buffer of a rendered frame
DXBufferCreate	Creates a buffer of a specified type based on a data array
DXTextureCreate	Creates a 2D texture out of a rectangle of a specified size cut from a passed image
DXInputCreate	Creates shader inputs
DXInputSet	Sets shader inputs
DXShaderCreate	Creates a shader of a specified type
DXShaderSetLayout	Sets vertex layout for the vertex shader
DXShaderInputsSet	Sets shader inputs
DXShaderTexturesSet	Sets shader textures
DXDraw	Renders the vertices of the vertex buffer set in DXBufferSet()
DXDrawIndexed	Renders graphic primitives described by the index buffer from DXBufferSet()
DXPrimiveTopologySet	Sets the type of primitives for rendering using DXDrawIndexed()
DXBufferSet	Sets a buffer for the current rendering
DXShaderSet	Sets a shader for rendering
DXHandleType	Returns a handle type
DXRelease	Releases a handle

DatabaseColumnBlob

DXContextCreate