OpenGL extensions used in Kanzi

This table lists the OpenGL extensions that Kanzi uses.

Feature: OpenGL extensions	Requirement
Debugging: GL_KHR_debug	If you call Renderer::logOpenGLInformation and this extension is available, Kanzi uses it.
Shader compatibility: GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility	If you use OpenGL ES shaders with desktop OpenGL, one of these extensions must be available.
Vertex formats: GL_ARB_half_float_vertex GL_EXT_vertex_half_float	If you use half-float vertex formats, one of these extensions must be available, unless your platform supports OpenGL ES 3.0+ or OpenGL 4.2+. See Optimizing meshes.
Texture and render target formats: GL_EXT_texture_norm16	If in a texture or render target you select any 16-bit signed or unsigned format, Kanzi uses this extension, if it is available.
Texture and render target formats: GL_EXT_color_buffer_half_float	If in a texture or render target you select any 16-bit float format, Kanzi uses this extension, if it is available.
Texture and render target formats: GL_EXT_color_buffer_float	If in a texture or render target you select any 32-bit float format, Kanzi uses this extension, if it is available.
Texture and render target formats: GL_EXT_texture_compression_s3tc GL_EXT_texture_compression_rgtc GL_ARB_texture_compression_rgtc GL_ARB_texture_compression_bptc GL_EXT_texture_compression_bptc	If you use BCn texture formats, the corresponding format out of these must be available.
Texture and render target formats: GL_KHR_texture_compression_astc_ldr GL_KHR_texture_compression_astc_hdr	If you use ASTC texture formats, the corresponding format out of these must be available. See Using the ASTC algorithm.
Texture and render target formats: GL_EXT_texture_filter_anisotropic GL_ARB_texture_filter_anisotropic	If you set anisotropic filtering in any of your textures, this extension must be available.
Advanced color blending: GL_KHR_blend_equation_advanced GL_KHR_blend_equation_advanced_coherent	If you set any node or material to use an advanced color blending mode, these extensions must be available. See Advanced color blending modes.

See also

Optimizing meshes

Compressing textures

Textures

Using render target textures

Composition and blending