Gorilla.Context.Shader

Fields

• protected FContextClass : TClass
  
• protected FVS : NativeUInt
  
• protected FGS : NativeUInt
  
• protected FPS : NativeUInt
  
• protected FProg : NativeUInt
  
• protected FVariables : TContextShaderVariables
  
• protected FUniformBuffers : TList<Gorilla.Context.Shader.TUniformBufferStruct>
  
• protected FUniformBuffersModified : Boolean
  
• public ShaderProgramClass : TShaderProgramClass
  

Methods

• public constructor Create  ( const  AContextClass :  TClass; const  VS :  TContextShader; const  PS :  TContextShader ) ;
• public constructor Create  ( const  AContextClass :  TClass; const  VS :  TContextShader; const  GS :  TContextShader; const  PS :  TContextShader ) ;
• public destructor Destroy  ( ) ;
• protected procedure DoInitialize  ( const  VS :  TContextShader; const  PS :  TContextShader ) ;  overload virtual;

  Initializes the shader program by creating a program in GPU and applying the vertex and pixel shader to it. It also registeres all shader variables in GPU shader program.

• protected procedure DoInitialize  ( const  VS :  TContextShader; const  GS :  TContextShader; const  PS :  TContextShader ) ;  abstract overload virtual;

  Initializes the shader program by creating a program in GPU and applying the vertex, geometry and pixel shader to it. It also registeres all shader variables in GPU shader program.

• protected function NewUniformBufferStruct  ( )  : TUniformBufferStruct ;  abstract virtual;
• protected procedure FreeUniformBufferStruct  ( AStruct :  PUniformBufferStruct ) ;  abstract virtual;
• public function Available  ( )  : Boolean ;  abstract virtual;

  Checks if all handles are available and shader code got compiled

• public procedure Use  ( ) ;  abstract virtual;

  Activates a shader program for usage.

• public function BuildShader  ( AType :  Integer; const  ACode :  TContextShaderCode; AIsInDesignTime :  Boolean  =  False )  : Integer ;  class abstract virtual;
• public procedure ActivateDefault  ( ) ;  class abstract virtual;

  Resets the currently used shader program to the default program with id "0", f.e. in OpenGL glUseProgram(0);

• public function RegisterUniformBuffer  ( AName :  string; AData :  Pointer; ASize :  Int64 )  : PUniformBufferStruct ;  virtual;

  Registers an individual "packed record" structure as uniform block in the shader program.

• public procedure UnregisterUniformBufferByName  ( AName :  string ) ;  virtual;
• public procedure UnregisterUniformBufferByIdx  ( AIdx :  Integer ) ;  virtual;

  Unregisters an individually registered "packed record" structure by its name from the shader program.

• public procedure ClearUniformBuffers  ( ) ;  virtual;

  Clears all registered invidual structures from the shader program.

• public function IndexOfUniformBuffer  ( AName :  string )  : Integer ;  virtual;

  Returns the index of a specific uniform buffer object. If the id can not be found, the routine returns -1.

• public function GetUniformBufferByName  ( AName :  string )  : PUniformBufferStruct ;  virtual;

  Searches for a specific uniform buffer by its name and returns a pointer to the registered structure.

• public procedure PushUniformBuffers  ( ) ;  virtual;

  Pushes all registered uniform buffers to the shader program. In case the buffer was not linked, it will link the buffer again to the shader program.

Properties

• public ContextClass : TClass

  Working context.

  read FContextClass
  
• public VS : NativeUInt

  Vertex shader handle used by the program.

  read FVS
  
• public GS : NativeUInt

  Geometry shader handle used by the program.

  read FGS
  
• public PS : NativeUInt

  Pixel shader handle used by the program.

  read FPS
  
• public Prog : NativeUInt

  The program handle itself.

  read FProg
  
• public Variables : TDictionary<System.string,FMX.Types3D.TContextShaderVariable>

  Registered shader variables for usage inside of the shader code, f.e. GLSL.

  read FVariables