# The Mesa 3D Graphics Library

# Mesa 18.3.0 Release Notes / TBD

Mesa 18.3.0 is a new development release. People who are concerned with stability and reliability should stick with a previous release or wait for Mesa 18.3.1.

Mesa 18.3.0 implements the OpenGL 4.5 API, but the version reported by glGetString(GL_VERSION) or glGetIntegerv(GL_MAJOR_VERSION) / glGetIntegerv(GL_MINOR_VERSION) depends on the particular driver being used. Some drivers don't support all the features required in OpenGL 4.5. OpenGL 4.5 is only available if requested at context creation. Compatibility contexts may report a lower version depending on each driver.

libwayland-egl is now distributed by Wayland (since 1.15, see announcement), and has been removed from Mesa in this release. Make sure you're using an up-to-date version of Wayland to keep the functionality.

## SHA256 checksums

    TBD.

## New features

Note: some of the new features are only available with certain drivers.

- GL_AMD_depth_clamp_separate on r600, radeonsi.
- GL_AMD_framebuffer_multisample_advanced on radeonsi.
- GL_AMD_gpu_shader_int64 on i965, nvc0, radeonsi.
- GL_AMD_multi_draw_indirect on all GL 4.x drivers.
- GL_AMD_query_buffer_object on i965, nvc0, r600, radeonsi.
- GL_EXT_disjoint_timer_query on radeonsi and most other Gallium drivers (ES extension)
- GL_EXT_vertex_attrib_64bit on i965, nvc0, radeonsi.
- GL_EXT_window_rectangles on radeonsi.
- GL_KHR_texture_compression_astc_sliced_3d on radeonsi.
- GL_INTEL_fragment_shader_ordering on i965.
- GL_NV_fragment_shader_interlock on i965.

## Bug fixes

- TBD

## Changes

- TBD