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graphics: share packed texture and render-target channel layouts

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Resolve PS5 5551 textures with alpha in bit 15 and compose host channel order with guest selectors. Share the existing render-target mapping with sampled textures so packed layouts cannot diverge.

Add native GPU readback coverage for 5551 and 4444, arbitrary selectors, constants, and existing 1555 render-target mapping. Verified PPSA24515 through launch.json with Vulkan validation, advancing scenes and over 12,700 guest flips. Independent correctness and cleanliness audits passed.
This commit is contained in:
nmzik
2026-09-10 13:45:08 +04:00
parent 635fb8882b
commit a305a6c1c6
5 changed files with 181 additions and 38 deletions
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src/graphics/host_gpu/renderer/image/textureCommon.cpp
+27 -22
View File
@@ -28,13 +28,13 @@ constexpr Prospero::ColorComponentMapping kRenderTargetColorMappings[4][4] = {
Prospero::ColorMappingArgb},
};
struct RenderTargetHostFormatInfo {
struct HostFormatInfo {
vk::Format format = vk::Format::eUndefined;
Prospero::ColorComponentMapping host_to_storage;
};
RenderTargetHostFormatInfo ResolveRenderTargetHostFormat(Prospero::BufferFormat guest_format,
Prospero::ChannelOrder order) {
HostFormatInfo ResolveHostFormat(Prospero::BufferFormat guest_format,
Prospero::ChannelOrder order) {
if (order == Prospero::ChannelOrder::kAlt) {
switch (guest_format) {
case Prospero::BufferFormat::k8_8_8_8UNorm:
@@ -48,14 +48,12 @@ RenderTargetHostFormatInfo ResolveRenderTargetHostFormat(Prospero::BufferFormat
default: break;
}
}
const auto format = VulkanFormat(guest_format);
switch (guest_format) {
case Prospero::BufferFormat::k5_5_5_1UNorm:
return {vk::Format::eA1R5G5B5UnormPack16, Prospero::ColorMappingBgra};
case Prospero::BufferFormat::k5_5_5_1UNorm: return {format, Prospero::ColorMappingBgra};
case Prospero::BufferFormat::k1_5_5_5UNorm:
return {vk::Format::eR5G5B5A1UnormPack16, Prospero::ColorMappingAbgr};
case Prospero::BufferFormat::k4_4_4_4UNorm:
return {vk::Format::eR4G4B4A4UnormPack16, Prospero::ColorMappingAbgr};
default: return {VulkanFormat(guest_format), {}};
case Prospero::BufferFormat::k4_4_4_4UNorm: return {format, Prospero::ColorMappingAbgr};
default: return {format, {}};
}
}
@@ -66,7 +64,7 @@ RenderTargetFormatInfo TextureGetRenderTargetFormat(Prospero::ChannelLayout layo
Prospero::ChannelOrder order) {
const auto encoding = Prospero::ResolveRenderTargetFormat(layout, type);
if (encoding.IsValid() && encoding.SupportsOrder(order)) {
const auto host = ResolveRenderTargetHostFormat(encoding.buffer_format, order);
const auto host = ResolveHostFormat(encoding.buffer_format, order);
const auto bytes = Prospero::RenderTargetBytesPerElement(encoding.buffer_format);
if (host.format != vk::Format::eUndefined && bytes != 0) {
const auto order_mapping =
@@ -92,7 +90,11 @@ static size_t GetTextureRegionCount(uint32_t depth, uint64_t levels, bool volume
return count;
}
vk::ComponentSwizzle TextureGetComponentSwizzle(uint8_t s) {
vk::ComponentSwizzle TextureGetComponentSwizzle(uint8_t s,
Prospero::ColorComponentMapping storage_to_host) {
if (s >= 4u && s <= 7u) {
s = static_cast<uint8_t>(4u + storage_to_host.Map(s - 4u));
}
switch (static_cast<Prospero::CompSwizzle>(s)) {
case Prospero::CompSwizzle::kZero: return vk::ComponentSwizzle::eZero;
case Prospero::CompSwizzle::kOne: return vk::ComponentSwizzle::eOne;
@@ -102,30 +104,33 @@ vk::ComponentSwizzle TextureGetComponentSwizzle(uint8_t s) {
case Prospero::CompSwizzle::kAlpha: return vk::ComponentSwizzle::eA;
default: EXIT("unknown swizzle: %d\n", static_cast<int>(s));
}
return vk::ComponentSwizzle::eIdentity;
}
} // namespace
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle) {
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle,
Prospero::ColorComponentMapping host_to_storage) {
Prospero::ColorComponentMapping storage_to_host {0u};
for (uint32_t host = 0; host < 4u; ++host) {
storage_to_host.packed |= static_cast<uint8_t>(host << (host_to_storage.Map(host) * 2u));
}
vk::ComponentMapping components {};
components.r = TextureGetComponentSwizzle(GetDstSel(swizzle, 0));
components.g = TextureGetComponentSwizzle(GetDstSel(swizzle, 1));
components.b = TextureGetComponentSwizzle(GetDstSel(swizzle, 2));
components.a = TextureGetComponentSwizzle(GetDstSel(swizzle, 3));
components.r = TextureGetComponentSwizzle(GetDstSel(swizzle, 0), storage_to_host);
components.g = TextureGetComponentSwizzle(GetDstSel(swizzle, 1), storage_to_host);
components.b = TextureGetComponentSwizzle(GetDstSel(swizzle, 2), storage_to_host);
components.a = TextureGetComponentSwizzle(GetDstSel(swizzle, 3), storage_to_host);
return components;
}
SurfaceFormatInfo TextureGetSurfaceFormatInfo(Prospero::BufferFormat format) {
const auto backing_format = Prospero::RemapTextureFormat(format);
const auto vk_format = VulkanFormat(backing_format);
const auto backing_format = Prospero::RemapTextureFormat(format);
const auto host = ResolveHostFormat(backing_format, Prospero::ChannelOrder::kStandard);
const auto conversion_format =
backing_format != format ? format : Prospero::BufferFormat::kInvalid;
if (vk_format != vk::Format::eUndefined) {
return SurfaceFormatInfo(vk_format, conversion_format);
if (host.format != vk::Format::eUndefined) {
return {host.format, conversion_format, host.host_to_storage};
}
EXIT("unknown format: fmt = %u\n", static_cast<uint32_t>(format));
return SurfaceFormatInfo(vk::Format::eUndefined, Prospero::BufferFormat::kInvalid);
}
namespace {
src/graphics/host_gpu/renderer/image/textureCommon.h
+5 -7
View File
@@ -20,12 +20,9 @@ struct RenderTargetFormatInfo {
};
struct SurfaceFormatInfo {
explicit constexpr SurfaceFormatInfo(vk::Format format,
Prospero::BufferFormat conversion_format)
: vk_format(format), conversion_format(conversion_format) {}
vk::Format vk_format;
Prospero::BufferFormat conversion_format;
vk::Format vk_format;
Prospero::BufferFormat conversion_format;
Prospero::ColorComponentMapping host_to_storage;
};
struct TextureUploadMipLayout {
@@ -43,7 +40,8 @@ struct TextureUploadLayout {
TextureUploadMipLayout mips[16] = {};
};
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle);
vk::ComponentMapping TextureGetComponentMapping(uint32_t swizzle,
Prospero::ColorComponentMapping host_to_storage);
SurfaceFormatInfo TextureGetSurfaceFormatInfo(Prospero::BufferFormat format);
RenderTargetFormatInfo TextureGetRenderTargetFormat(Prospero::ChannelLayout layout,
Prospero::ChannelType type,