nta::InstanceBatch Class Reference

#include <InstanceBatch.h>

Collaboration diagram for nta::InstanceBatch:

Public Member Functions
void	begin ()
	Clears out data from the previous frame.
void	end () const
	Doesn't actually do anything. This is purely cosmetic.
void	reset ()
	If you don't want to follow the begin/end pattern, you can just call reset instead before adding glyphs.
void	add_glyph (crvec4 posRect, GLuint texture=0, crvec4 uvRect=glm::vec4(0, 0, 1, 1), crvec4 color=glm::vec4(1))
void	add_instance_data (const VertexAttrib *attribs, std::size_t num_attribs, void *data, GLsizeiptr size, GLuint divisor=1)
void	render () const

Private Attributes
std::vector< InstancedGlyph >	m_glyphs

Detailed Description

Todo:

Compare speed of this and SpriteBatch when there's no instancing being done

Definition at line 26 of file InstanceBatch.h.

Member Function Documentation

add_glyph()

void nta::InstanceBatch::add_glyph	(	crvec4	posRect,
		GLuint	texture = 0,
		crvec4	uvRect = glm::vec4(0,0,1,1),
		crvec4	color = glm::vec4(1)
	)

Todo:

(?) add depth

Definition at line 13 of file InstanceBatch.cpp.

add_instance_data()

void nta::InstanceBatch::add_instance_data	(	const VertexAttrib *	attribs,
		std::size_t	num_attribs,
		void *	data,
		GLsizeiptr	size,
		GLuint	divisor = 1
	)

Adds data that varies between instances (data associated to most recently added glyph).

attribs describes the glsl "in" variables to change

OpenGL fetches new data after divisor instances are rendered

Todo:

Push error to ErrorManager?

Definition at line 33 of file InstanceBatch.cpp.

---

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

• include/nta/InstanceBatch.h
• src/InstanceBatch.cpp