Native bindings to the NV_framebuffer_multisample_coverage extension.

This extension extends the EXT_framebuffer_multisample specification by providing a new function, RenderBufferStorageMultisampleCoverageNV, that distinguishes between color samples and coverage samples.

EXT_framebuffer_multisample introduced the function RenderbufferStorageMultisampleEXT as a method of defining the storage parameters for a multisample render buffer. This function takes a samples parameter. Using rules provided by the specification, the samples parameter is resolved to an actual number of samples that is supported by the underlying hardware. EXT_framebuffer_multisample does not specify whether samples refers to coverage samples or color samples.

This extension adds the function RenderbufferStorageMultisamplCoverageNV, which takes a coverageSamples parameter as well as a colorSamples parameter. These two parameters give developers more fine grained control over the quality of multisampled images.

Requires EXT_framebuffer_object, EXT_framebuffer_blit and EXT_framebuffer_multisample.