From defb3a9465bcdfbe691e5e7a785b9999fa77b500 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Mon, 16 Dec 2019 21:15:15 -0800 Subject: [PATCH] anv: Only enable EWA LOD algorithm when doing anisotropic filtering. Updated documentation renames "Anisotropic Algorithm" to "LOD Algorithm" and adds a note for Gen9+ saying "The EWA Algorithm should only be enabled for Anisotropic Filtering modes." and indicating that the extra accuracy shouldn't be necessary for other modes, and comes at a cost. Reviewed-by: Jason Ekstrand --- src/intel/vulkan/genX_state.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/src/intel/vulkan/genX_state.c b/src/intel/vulkan/genX_state.c index 34c6c6bd142..78e018762cb 100644 --- a/src/intel/vulkan/genX_state.c +++ b/src/intel/vulkan/genX_state.c @@ -506,7 +506,8 @@ VkResult genX(CreateSampler)( .MagModeFilter = vk_to_gen_tex_filter(mag_filter, pCreateInfo->anisotropyEnable), .MinModeFilter = vk_to_gen_tex_filter(min_filter, pCreateInfo->anisotropyEnable), .TextureLODBias = anv_clamp_f(pCreateInfo->mipLodBias, -16, 15.996), - .AnisotropicAlgorithm = EWAApproximation, + .AnisotropicAlgorithm = + pCreateInfo->anisotropyEnable ? EWAApproximation : LEGACY, .MinLOD = anv_clamp_f(pCreateInfo->minLod, 0, 14), .MaxLOD = anv_clamp_f(pCreateInfo->maxLod, 0, 14), .ChromaKeyEnable = 0, -- 2.30.2