Properly initialize minFilter/magFilter when setting up test cases

Modified tests:

dEQP-VK.texture.compressed.*

Components: Vulkan
Vulkan CTS issue: 162

Change-Id: I5fde347c1ab24e01e1ac238fac82ec4071166993
diff --git a/external/vulkancts/modules/vulkan/texture/vktTextureCompressedFormatTests.cpp b/external/vulkancts/modules/vulkan/texture/vktTextureCompressedFormatTests.cpp
index c46b8d0..ce39927 100644
--- a/external/vulkancts/modules/vulkan/texture/vktTextureCompressedFormatTests.cpp
+++ b/external/vulkancts/modules/vulkan/texture/vktTextureCompressedFormatTests.cpp
@@ -165,6 +165,8 @@
 		testParameters.format		= etc2Formats[formatNdx].format;
 		testParameters.width		= sizes[sizeNdx].width;
 		testParameters.height		= sizes[sizeNdx].height;
+		testParameters.minFilter	= tcu::Sampler::NEAREST;
+		testParameters.magFilter	= tcu::Sampler::NEAREST;
 		testParameters.programs.push_back(PROGRAM_2D_FLOAT);
 
 		compressedTextureTests->addChild(new TextureTestCase<Compressed2DTestInstance>(testCtx, (nameBase + "_2d_" + sizes[sizeNdx].name).c_str(), (formatStr + ", TEXTURETYPE_2D").c_str(), testParameters));