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Tests for VK_NV_compute_shader_derivatives

Caio Oliveira requested to merge cmarcelo/crucible:r/VK_NV_compute_shader_derivatives into master

This extension enables using derivatives (and related operations) in compute shaders, it also provides a way to specify the layout of a "quad" in a subgroup.

Two new test files:

  • compute-derivative.c has tests for the various derivative group modes.
  • compute-subgroup-quad.c has tests for the swap vertical operation, depending on layout chosen the results are different.

Three new improvements to crucible:

  • run_simple_compute_pipeline(), helper for typical compute tests.
  • Allow to specify api_version in the test definiton. Use that version when creating the VkInstance.
  • Allow to specify the --target-env to be used via the QO_TARGET_ENV macro in the shader snippets. This let us set it to vulkan-1.1 for example.

The two latter improvements were needed for the subgroup test.

Edited by Caio Oliveira

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