RenderContext Class Reference

Encapsulates data for rendering a single bitmap: vertex array object (VAO), vertex buffer object (VBO), vertice coordinates, transformation matrix, etc. More...

#include <openglthread.h>

Collaboration diagram for RenderContext:

Public Member Functions
	RenderContext (SlotContext *slot_context, int id, unsigned int z=0)
	Default constructor. More...
virtual	~RenderContext ()
	Default virtual destructor. More...
int	getId () const
	Returns the unique id of this render context.
void	addRectangle (float left, float right, float top, float bottom)
void	clearObjects ()
void	renderTexture ()
	Render the texture.
void	renderObjects ()
	Render objects overlaying the texture.
void	render (XWindowAttributes x_window_attr)
	Sets x_window_attr and calls renderTexture and renderObjects.
void	bindTextures ()
	Associate textures with the shader program. Uses parameters from Shader reference.
void	bindVars ()
	Upload other data to the GPU (say, transformation matrix). Uses parameters from Shader reference.
void	bindVarsObj ()
	bindVars for the overlay objects. Uses previously calculated value of RenderContext::transform
void	bindVertexArray ()
	Bind the vertex array and draw.

Public Attributes
RenderContext(const RenderContext &f)	ban_copy_asm (RenderContext)
SlotContext *	slot_context
	Knows relevant Shader and YUVTEX.
const unsigned int	z
	Stacking order.
int	id
	A unique id identifying this render context.
XWindowAttributes	x_window_attr
	X window size, etc.

Private Member Functions
void	activate ()
	Init VAO, VBO, etc.

Private Attributes
GLuint	VAO
	id of the vertex array object
GLuint	VBO
	id of the vertex buffer object
GLuint	EBO
	id of the element buffer object
std::array< GLfloat, 16 >	transform
	data of the transformation matrix
std::array< GLfloat, 20 >	vertices
	data of the vertex buffer object
std::array< GLuint, 6 >	indices
	data of the element buffer object
long int	render_mstime
long int	render_mstime_old
std::list< OverlayObject * >	overlays

Detailed Description

Encapsulates data for rendering a single bitmap: vertex array object (VAO), vertex buffer object (VBO), vertice coordinates, transformation matrix, etc.

Constructor & Destructor Documentation

RenderContext()

RenderContext::RenderContext	(	SlotContext *	slot_context,
		int	id,
		unsigned int	z = 0
	)

Default constructor.

Parameters

slot_context	A reference to a SlotContext instance
z	Stacking order (for "video-in-video")

Here is the call graph for this function:

~RenderContext()

RenderContext::~RenderContext ( )

virtual

Default virtual destructor.

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

• /home/sampsa/C/valkka/include/openglthread.h
• /home/sampsa/C/valkka/src/openglthread.cpp