Fix OpImageSampleProjDref
Fix OpImageSampleProjDref

Divide Dref by the projection coordinate.

The SPIR-V spec states that
"Dref /q is the depth-comparison reference value."

Bug b/129523279
Tests: dEQP-VK.glsl.texture_functions.textureproj.*
Change-Id: Ib1c4ad09f829b84b6b1065ff604fe88f8b1c1426
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/31693
Presubmit-Ready: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>
Kokoro-Presubmit: kokoro <2ac7b1f3fa578934c95181d4272be0d3bca00121@google.com>
Reviewed-by: Chris Forbes <c3279c50043e18e9442c1ae071cafa0e7a4ca967@google.com>
Tested-by: Nicolas Capens <51edc787c30f24c4904e8ffbb5523c3a9f7a451d@google.com>

bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,bkaradzic/SwiftShader,google/swiftshader,google/swiftshader,google/swiftshader,bkaradzic/SwiftShader