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[Feat] (Backend/DirectVulkan): implement min/max lod

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- This fixes water waves in Derivative d24.4.14
This commit is contained in:
swung0x48
2026-06-01 05:38:28 +08:00
parent 59733a2a26
commit 8a628631fb
1 changed files with 16 additions and 4 deletions
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MobileGL/MG_Backend/DirectVulkan/Renderer/VkSamplerManager.cpp
+16 -4
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@@ -10,6 +10,7 @@
#include "MG_State/GLState/Core.h"
#include <algorithm>
#include <cmath>
namespace MobileGL::MG_Backend::DirectVulkan {
@@ -39,6 +40,17 @@ namespace MobileGL::MG_Backend::DirectVulkan {
Bool NearlyEqual(Float lhs, Float rhs) {
return std::fabs(lhs - rhs) <= 1e-6f;
}
Float ResolveEffectiveMaxLod(const MG_State::GLState::SamplerObject& sampler) {
if (sampler.GetMipmapMode() == SamplerMipmapMode::None) {
return 0.0f;
}
return sampler.GetMaxLod();
}
Float ResolveEffectiveMinLod(const MG_State::GLState::SamplerObject& sampler, Float effectiveMaxLod) {
return std::min(sampler.GetMinLod(), effectiveMaxLod);
}
} // namespace
Bool VkSamplerManager::Initialize(const InitInfo& initInfo) {
@@ -81,9 +93,9 @@ namespace MobileGL::MG_Backend::DirectVulkan {
XXHASH_VERIFY(XXH64_update(m_hashState, &wrapT, sizeof(wrapT)));
const auto wrapR = sampler.GetWrapR();
XXHASH_VERIFY(XXH64_update(m_hashState, &wrapR, sizeof(wrapR)));
const auto minLod = sampler.GetMinLod();
const auto maxLod = ResolveEffectiveMaxLod(sampler);
const auto minLod = ResolveEffectiveMinLod(sampler, maxLod);
XXHASH_VERIFY(XXH64_update(m_hashState, &minLod, sizeof(minLod)));
const auto maxLod = sampler.GetMaxLod();
XXHASH_VERIFY(XXH64_update(m_hashState, &maxLod, sizeof(maxLod)));
const auto lodBias = sampler.GetLodBias();
XXHASH_VERIFY(XXH64_update(m_hashState, &lodBias, sizeof(lodBias)));
@@ -117,8 +129,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
samplerInfo.maxAnisotropy = 1.0f;
samplerInfo.compareEnable = sampler.GetCompareMode() == SamplerCompareMode::CompareToTexture ? VK_TRUE : VK_FALSE;
samplerInfo.compareOp = ToVkCompareOp(ResolveCompareFunc(sampler, texture));
samplerInfo.minLod = sampler.GetMinLod();
samplerInfo.maxLod = sampler.GetMaxLod();
samplerInfo.maxLod = ResolveEffectiveMaxLod(sampler);
samplerInfo.minLod = ResolveEffectiveMinLod(sampler, samplerInfo.maxLod);
samplerInfo.borderColor = ResolveVkBorderColor(sampler, texture);
samplerInfo.unnormalizedCoordinates = VK_FALSE;