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| author | Simon Ser <contact@emersion.fr> | 2023-02-02 22:43:31 +0100 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2023-02-02 22:54:13 +0100 |
| commit | 677a3f2f8847ed2de49dd60868f9d9487a546f58 (patch) | |
| tree | dbd49bc3708a75bec31ce4e44f4e275a89e2cc07 /backend/drm | |
| parent | 0534d12b28248cf149a829b122a8c3d1b22b0003 (diff) | |
render/gles2: default to highp if available
The spec [1] says that the maximum value for a mediump float
is at least 2¹⁴ in section 4.5.2. However, when using a 4k
resolution texture coordinates will exceed this value. This causes
issues on drivers which implement mediump as a 16-bit [2].
Switch to highp. There's a twist: on GLES2, support for highp is
optional. So we need to guard it with cute GL_FRAGMENT_PRECISION_HIGH
ifdefs.
[1]: https://registry.khronos.org/OpenGL/specs/es/2.0/GLSL_ES_Specification_1.00.pdf
[2]: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21082
Diffstat (limited to 'backend/drm')
0 files changed, 0 insertions, 0 deletions