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graphics: grow undersized render target backings

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This commit is contained in:
nmzik
2026-08-19 21:18:05 +02:00
parent 7f66a61801
commit 5ad7d0ebc2
2 changed files with 53 additions and 0 deletions
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tests/ShaderRecompilerComputeTests.cpp
+44
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@@ -3532,6 +3532,50 @@ public:
null_image && null_repeat == null_image && null_image != exact,
"typed null-image lookup was not stable");
constexpr uint64_t extent_alias_offset = 0x2400000;
auto narrow_target = sampled;
narrow_target.type = BindingType::RenderTarget;
narrow_target.info.data = {base + extent_alias_offset, 0x10000};
narrow_target.info.pixel_format = vk::Format::eR16G16B16A16Sfloat;
narrow_target.info.guest_format =
Prospero::BufferFormat::k16_16_16_16Float;
narrow_target.info.extent = {1, 1, 1};
narrow_target.info.pitch = 128;
narrow_target.info.bytes_per_block = 8;
narrow_target.info.tile_mode = Prospero::TileMode::kRenderTarget;
narrow_target.info.mip_layout[0] = {0, 0x10000, 128, 1};
narrow_target.view_info.format = narrow_target.info.pixel_format;
narrow_target.view_info.usage =
vk::ImageUsageFlagBits::eColorAttachment;
const auto narrow_target_id = texture_cache.FindImage(narrow_target);
const auto narrow_target_view =
texture_cache.FindRenderTarget(narrow_target_id, narrow_target);
auto wide_target = narrow_target;
wide_target.info.extent.width = 9;
const auto wide_target_id = texture_cache.FindImage(wide_target);
const auto wide_target_view =
texture_cache.FindRenderTarget(wide_target_id, wide_target);
const auto wide_owner =
TextureCacheTestAccess::Owner(texture_cache, wide_target_id);
Require(name, "equal-allocation render-target growth",
narrow_target_view != nullptr && wide_target_view != nullptr &&
wide_target_id != narrow_target_id &&
!TextureCacheTestAccess::Contains(texture_cache,
narrow_target_id) &&
wide_owner != nullptr &&
wide_owner->info.extent == vk::Extent3D{9, 1, 1} &&
wide_owner->backing.extent == vk::Extent3D{9, 1, 1},
"a 9x1 render target reused its equal-size 1x1 native backing");
auto narrow_again = narrow_target;
const auto narrow_again_id = texture_cache.FindImage(narrow_again);
Require(name, "larger render-target backing reuse",
narrow_again_id == wide_target_id &&
texture_cache.GetImage(narrow_again_id).backing.extent ==
vk::Extent3D{9, 1, 1},
"a smaller render area replaced its compatible larger backing");
auto MakeLinearDesc =
[&](uint64_t address, uint64_t size, vk::Format format,
Prospero::BufferFormat guest_format, Prospero::ImageType type,