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Add maxAnisotropy to GPUSamplerDescriptor

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Adds some maxAnisotropy implementation.
Adds an end2end test, drawing a slanted plane with a texture of which each mipmap has a different color, with different maxAnisotropy values.
You can get an idea of what it does at https://jsfiddle.net/t64kpu81/85/
Needs further CTS.

Bug: dawn:568
Change-Id: I89ac56d8cf0fbb655358bf6effa016ddc1f8426f
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/35143
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
This commit is contained in:
shrekshao
2020-12-24 03:11:17 +00:00
committed by Commit Bot service account
parent c08276644f
commit f8c5e4ab74
13 changed files with 553 additions and 29 deletions
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24
src/dawn_native/Sampler.cpp
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@@ -20,6 +20,12 @@
#include <cmath>
namespace {
uint16_t GetClampedMaxAnisotropy(uint16_t value) {
return value >= 1u ? value : 1u;
}
} // anonymous namespace
namespace dawn_native {
MaybeError ValidateSamplerDescriptor(DeviceBase*, const SamplerDescriptor* descriptor) {
@@ -40,6 +46,16 @@ namespace dawn_native {
"Min lod clamp value cannot greater than max lod clamp value");
}
if (descriptor->maxAnisotropy > 1) {
if (descriptor->minFilter != wgpu::FilterMode::Linear ||
descriptor->magFilter != wgpu::FilterMode::Linear ||
descriptor->mipmapFilter != wgpu::FilterMode::Linear) {
return DAWN_VALIDATION_ERROR(
"min, mag, and mipmap filter should be linear when using anisotropic "
"filtering");
}
}
DAWN_TRY(ValidateFilterMode(descriptor->minFilter));
DAWN_TRY(ValidateFilterMode(descriptor->magFilter));
DAWN_TRY(ValidateFilterMode(descriptor->mipmapFilter));
@@ -62,7 +78,8 @@ namespace dawn_native {
mMipmapFilter(descriptor->mipmapFilter),
mLodMinClamp(descriptor->lodMinClamp),
mLodMaxClamp(descriptor->lodMaxClamp),
mCompareFunction(descriptor->compare) {
mCompareFunction(descriptor->compare),
mMaxAnisotropy(GetClampedMaxAnisotropy(descriptor->maxAnisotropy)) {
}
SamplerBase::SamplerBase(DeviceBase* device, ObjectBase::ErrorTag tag)
@@ -87,7 +104,8 @@ namespace dawn_native {
size_t SamplerBase::ComputeContentHash() {
ObjectContentHasher recorder;
recorder.Record(mAddressModeU, mAddressModeV, mAddressModeW, mMagFilter, mMinFilter,
mMipmapFilter, mLodMinClamp, mLodMaxClamp, mCompareFunction);
mMipmapFilter, mLodMinClamp, mLodMaxClamp, mCompareFunction,
mMaxAnisotropy);
return recorder.GetContentHash();
}
@@ -105,7 +123,7 @@ namespace dawn_native {
a->mAddressModeW == b->mAddressModeW && a->mMagFilter == b->mMagFilter &&
a->mMinFilter == b->mMinFilter && a->mMipmapFilter == b->mMipmapFilter &&
a->mLodMinClamp == b->mLodMinClamp && a->mLodMaxClamp == b->mLodMaxClamp &&
a->mCompareFunction == b->mCompareFunction;
a->mCompareFunction == b->mCompareFunction && a->mMaxAnisotropy == b->mMaxAnisotropy;
}
} // namespace dawn_native