Module test_support 

Enums

ReadbackError

Why an offscreen readback could not produce pixels.

Constants

REQUIRE_ADAPTER_VAR

The variable a test run sets to insist on a GPU adapter.

Functions

adapter_required

true when REQUIRE_ADAPTER_VAR asks for an adapter.

create_offscreen_renderer

Build an offscreen renderer on the shared device, or None if this host can open no usable GPU device at all.

create_test_renderer

create_offscreen_renderer, under its earlier name.

is_lavapipe

true for Mesa’s lavapipe, the Vulkan rasteriser that runs on the CPU.

read_texture_rgba

Read a texture back as tightly-packed RGBA, panicking on GPU failure.

require_test_renderer

An offscreen renderer for a GPU test, honouring REQUIRE_ADAPTER_VAR.

try_read_texture_level_rgba

try_read_texture_rgba of mip level level, which is width × height.

try_read_texture_rgba

Read a texture back as tightly-packed RGBA.