Buffers

Interfaces and wrapper classes for working with OpenGL buffers. More...

Collaboration diagram for Buffers:

Detailed Description

Interfaces and wrapper classes for working with OpenGL buffers.

OpenGL buffers are used to transfer larger chunks of data between the host and the GPU. All buffer types inherit from the GL::Buffer base interface. The API for uploading/downloading of buffer data is using std::vector as storage backend on the host side. The individual buffer types are used for different applications:

• The GL::VertexBuffer class stores per-vertex data used for rendering graphical primitives onto the screen. It can be combined with an GL::IndexBuffer to reduce memory consumption if multiple vertices share the same vertex data.
• The GL::AtomicCounterBuffer is a specialization to represent OpenGL Atomic Counter Objects enabling atomic counters in GLSL shaders. Since their functionality is very limited it is recommended to use them only if Shader Storage Buffer Objects (SSBOs) are not available.
• The GL::ShaderStorageBuffer represents a Shader Storage Buffer Object (SSBO), the most generic and powerful buffer type available. They allow for generic uploading/downloading any kind of data between host and GPU.

Classes
class	ImFusion::GL::Buffer
	Wrapper class for OpenGL Buffer Objects. More...
class	ImFusion::GL::FullscreenSquare
	Helper class to easily render a full-screen quad. More...
class	ImFusion::GL::IndexBuffer
	Specialization of Buffer to store vertex index data (GL_ELEMENT_ARRAY_BUFFER). More...
class	ImFusion::GL::VertexBuffer
	Specialization of Buffer to store vertex array data. More...
class	ImFusion::GL::VertexArrayObject
	Wrapper around an OpenGL Vertex Array Object (VAO) to define the vertex attribute specification for rendering. More...
class	ImFusion::GL::AtomicCounterBuffer
	Specialization of Buffer for OpenGL Atomic Counter Objects. More...
class	ImFusion::GL::ShaderStorageBuffer
	Specialization of Buffer for OpenGL Shader Storage Buffer Object. More...