tree 608e52757343399b19caeb816be55b3bb95e43e3
parent a94ca189f99213c0720e24a183c46bf2bc086eb4
author Nicolas Capens <capn@google.com> 1556085802 -0400
committer Nicolas Capens <nicolascapens@google.com> 1556135509 +0000

Implement OpImageSampleExplicitLod

Emit a call to a different trampoline function for generating the
sampler code, which unifies the implementation with
OpImageSampleExplicitLod's by using a common EmitImageSample which
takes a sampler 'method' enum. This is then passed at shader execution
time to emitSamplerFunction.

The lod parameter is parsed from the instruction stream in
EmitImageSample. Other (optional) image operands are left unimplemented
for now.

Bug: b/129523279
Test: dEQP-VK.binding_model.shader_access.primary_cmd_buf.combined_image_sampler_mutable.fragment.single_descriptor.2d
Change-Id: I265b81d953fe5a0496d029704a0f5eeff4229823
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/29774
Tested-by: Nicolas Capens <nicolascapens@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
Reviewed-by: Chris Forbes <chrisforbes@google.com>