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Emulate the 'None' mipfilter by adjusting LOD

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Borrowed this technique from yuzu since Vulkan has no direct equivalent
This commit is contained in:
Billy Laws 2022-07-31 14:18:16 +01:00
parent 9d50b6d0f7
commit 856818c8eb
1 changed files with 5 additions and 3 deletions
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8
app/src/main/cpp/skyline/gpu/interconnect/graphics_context.h
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@ -1,5 +1,6 @@
// SPDX-License-Identifier: MPL-2.0
// Copyright © 2021 Skyline Team and Contributors (https://github.com/skyline-emu/)
// Copyright © 2022 yuzu Emulator Project (https://github.com/yuzu-emu/)
#pragma once
@ -2404,7 +2405,8 @@ namespace skyline::gpu::interconnect {
switch (filter) {
// @fmt:off
case TscFilter::None: return VkMode{};
// See https://github.com/yuzu-emu/yuzu/blob/5af06d14337a61d9ed1093079d13f68cbb1f5451/src/video_core/renderer_vulkan/maxwell_to_vk.cpp#L35
case TscFilter::None: return VkMode::eNearest;
case TscFilter::Nearest: return VkMode::eNearest;
case TscFilter::Linear: return VkMode::eLinear;
@ -2534,8 +2536,8 @@ namespace skyline::gpu::interconnect {
.maxAnisotropy = maxAnisotropy,
.compareEnable = samplerControl.depthCompareEnable,
.compareOp = ConvertSamplerCompareOp(samplerControl.depthCompareOp),
.minLod = samplerControl.MinLodClamp(),
.maxLod = samplerControl.MaxLodClamp(),
.minLod = samplerControl.mipFilter == TextureSamplerControl::MipFilter::None ? 0.0f : samplerControl.MinLodClamp(),
.maxLod = samplerControl.mipFilter == TextureSamplerControl::MipFilter::None ? 0.25f : samplerControl.MaxLodClamp(),
.unnormalizedCoordinates = false,
}, vk::SamplerReductionModeCreateInfoEXT{
.reductionMode = ConvertSamplerReductionFilter(samplerControl.reductionFilter),