Wizt::WebGLRenderContext Class Reference

Context for rendering into a WebGL stream. More...

#include </home/werner/origo/vish/ocean/Argyroneta/WebGL/WebGLRenderContext.hpp>

List of all members.

Public Types

• typedef Eagle::tvector3 tvector3

  Typedef for using tangential vectors.
  

Public Member Functions

• override MemCore::RefPtr< Program > createProgram (const std::string &VertexShader, const std::string &FragmentShader)

  Create a shader program from GLGS source code.
  

• override MemCore::RefPtr
  < RenderParameter > createRenderParameter (const std::string &, const void *data, const std::type_info &type, int Multiplicity)

  Set a generic rendering parameter. The implementation of this function will have some intelligence built in with respect to what each parameter means. It might just set a uniform variable in a shader, or detect that it's name is "glLineWidth" and issue a special OpenGL call.
  

• override MemCore::RefPtr
  < VertexAttribute > createVertexAttribute (const MemCore::RefPtr< MemCore::ChunkBase > &Data, const std::string &name)
• override MemCore::RefPtr< Painter > drawPrimitives (Primitive, size_t howmany=0)

  Return a painter object suitable for insertion to an Anemone.
  

• override MemCore::RefPtr
  < RenderFlag > Enable (const char *what, bool Yes=true)

  Enable some rendering flag Give some OpenGL flag as string, for instance:
  

• override int render (const ObjectSelection &RenderObjects, double &RenderTime, int MinLevel=RENDER_FIRST, int MaxLevel=RENDER_LAST)

  Implementation of object layer traversal, setting OpenGL matrizes for each RenderCategory.
  

• override Geometry viewport () const

  Return the viewport properties of the render context, as set by glViewport();.
  

• WebGLRenderContext (std::ostream &WebStream, const RefPtr< VRenderPrecision > &Hints)

  Constructor.
  

• virtual ~WebGLRenderContext ()

  Constructor.
  

Public Attributes

• std::string CurrentProgram

  The currently used shader program.
  

• std::ostream & WebStream

---

Detailed Description

Context for rendering into a WebGL stream.

Functionality is limited to WebGL (OpenGL ES): http://www.khronos.org/opengles/documentation/opengles1_0/html/ http://www.nihilogic.dk/labs/webgl_cheat_sheet/WebGL_Cheat_Sheet.pdf

---

Member Function Documentation

MemCore::RefPtr< RenderBasin::VertexAttribute > Wizt::WebGLRenderContext::createVertexAttribute	(	const MemCore::RefPtr< MemCore::ChunkBase > &	VertexData,
		const std::string &	name
	)		[virtual]

Parameters:

name	A name to be associated with this buffer RenderBasin&myContext; Anemone RenderAnemone; RenderAnemone.insert( Context.createVertexAttribute( Data , "myVariable" ) );

Implements Wizt::RenderBasin.

MemCore::RefPtr< RenderBasin::Painter > Wizt::WebGLRenderContext::drawPrimitives	(	Primitive	,
		size_t	howmany = 0
	)		[virtual]

Return a painter object suitable for insertion to an Anemone.

It is supposed to draw all stored Tentacles once called through Anemone::wave().

        Anemone RenderAnemone;
        RenderBasin&MyRenderContext;

        RenderAnemone.insert( MyRenderContext.drawPrimitives(RenderBasin::POINTS) );

                RenderAnemone.wave();

Parameters:

howmany

The number of elements that will be shown. If none specified here, then all that have been loaded into the Anemone .

Implements Wizt::RenderBasin.

MemCore::RefPtr< RenderBasin::RenderFlag > Wizt::WebGLRenderContext::Enable	(	const char *	what,
		bool	Yes = true
	)		[virtual]

Enable some rendering flag Give some OpenGL flag as string, for instance:

                Enable("GL_LIGHTING");

instead of

                glEnable(GL_LIGHTING);

Note that inclusion of OpenGL headers is not required to call this function.

Implements Wizt::RenderBasin.

int Wizt::WebGLRenderContext::render	(	const ObjectSelection &	RenderObjects,
		double &	RenderTime,
		int	MinLevel = RENDER_FIRST,
		int	MaxLevel = RENDER_LAST
	)		[virtual]

Implementation of object layer traversal, setting OpenGL matrizes for each RenderCategory.

Called by VSceneLayers::render(), which is called by virtual Viewer::render().

Implements Wizt::VRenderContext.

---

The documentation for this class was generated from the following files:

• ocean/Argyroneta/WebGL/WebGLRenderContext.hpp
• ocean/Argyroneta/WebGL/WebGLRenderContext.cpp