General OpenGL

General OpenGL Category Page

General information

OpenGL concepts

• OpenGL Objects: The standard OpenGL object model.
• GL Error Codes

OpenGL Shading Language aka GLSL.

• Shader
  • Objects
  • Compilation
  • Introspection
• The core language
• Variable types
  • Type qualifiers
  • Layout qualifiers
  • Uniform variables
  • Sampler variables
  • Image variables
• Built-in variables
• Interface blocks
  • Uniform blocks
  • Shader storage blocks
• SPIR-V
• Shader stages:
  • Vertex Shader
  • Tessellation
  • Geometry Shader
  • Fragment Shader
  • Compute Shader
• Other shading languages

OpenGL object types and concepts

• Buffer Objects
  • Buffer Object Streaming
  • Vertex Buffer Objects
  • Pixel Buffer Objects
  • Shader Storage Buffer Objects
  • Uniform Buffer Objects
  • Atomic Counters
• Vertex Array Objects
• Textures
  • Sampler Objects
  • Image formats
  • Pixel transfer operations
  • Cubemap Textures
  • Array Textures
  • Multisample Textures
  • Rectangle Textures
  • 3D Textures
  • Buffer Textures
• Asynchronous query objects
• Framebuffer Objects
  • Default Framebuffer
  • Renderbuffer Objects
• Unconventional objects:
  • Sync Objects
  • Shader and program objects

Rendering pipeline

• Vertex Specification
  • Vertex Rendering
  • Primitive
• Vertex Processing
  • Vertex Shader
  • Tessellation
  • Geometry Shader
• Vertex Post-Processing
  • Transform Feedback
• Primitive Assembly
  • Face Culling
• Rasterization
• Fragment Shader
• Per-Sample Processing
  • Scissor Test
  • Stencil Test
  • Depth Test
  • Blending
  • Logical Operation
  • Write Mask

FAQs and factoids

• FAQ: frequently asked questions
  • FAQ/Color
• Creating an OpenGL Context
• Get Context Info: Getting Information From GL
• OpenGL and multithreading
• Debugging Tools
• Common Mistakes
• Common Mistakes: Deprecated
• Legacy OpenGL: why it is better to use modern GL rather than legacy GL
• Drawing Lines over Polygons: Using glPolygonOffset.

Deprecated Functionality

The following sections are deprecated in version 3.0 and removed in 3.1 and above. You should not rely on this functionality going forward.

• Fixed Function Texture Binding: See GLSL sampler binding instead.
• Texture Combiners: See The OpenGL Shading Language instead.
• Vertex Arrays: See Buffer Object and Vertex Specification.
• Vertex Formats: See Vertex Array Object
• Shadow Mapping without shaders
• Fonts
• Vertex Transformation
• Selection mechanism
• p-buffer
• VBO - more
• VBO - just examples
• Mathematics of glTexGen
• Viewing and Transformations : Answers about Transformations.