graphics: simplify render target format and color mapping resolution

This commit is contained in:
nmzik
2026-08-11 10:13:19 +02:00
parent ca7c8f0074
commit 11b95bed20
6 changed files with 355 additions and 160 deletions
@@ -14,152 +14,64 @@
namespace Libs::Graphics {
namespace {
struct RenderTargetFormatMapping {
Prospero::ChannelLayout layout;
Prospero::ChannelType type;
Prospero::ChannelOrder order;
RenderTargetFormatInfo info;
// Rows are channel order; columns are the number of physical components minus one. Unused
// selectors complete each entry to a permutation so logical write masks can be inverted.
constexpr Prospero::ColorComponentMapping kRenderTargetColorMappings[4][4] = {
{Prospero::ColorMappingRgba, Prospero::ColorMappingRgba, Prospero::ColorMappingRgba,
Prospero::ColorMappingRgba},
{Prospero::ColorMappingGr, Prospero::ColorMappingRabg, Prospero::ColorMappingRgab,
Prospero::ColorMappingBgra},
{Prospero::ColorMappingBgra, Prospero::ColorMappingGr, Prospero::ColorMappingBgra,
Prospero::ColorMappingAbgr},
{Prospero::ColorMappingAgba, Prospero::ColorMappingArbg, Prospero::ColorMappingAgbr,
Prospero::ColorMappingArgb},
};
constexpr RenderTargetFormatMapping kRenderTargetFormats[] = {
{Prospero::ChannelLayout::k8,
Prospero::ChannelType::kUInt,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR8Uint, 1}},
{Prospero::ChannelLayout::k8_8,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR8G8Unorm, 2}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR8G8B8A8Unorm, 4}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kSNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR8G8B8A8Snorm, 4}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kSrgb,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR8G8B8A8Srgb, 4}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kAlt,
{vk::Format::eB8G8R8A8Unorm, 4}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kSNorm,
Prospero::ChannelOrder::kAlt,
{vk::Format::eB8G8R8A8Snorm, 4}},
{Prospero::ChannelLayout::k8_8_8_8,
Prospero::ChannelType::kSrgb,
Prospero::ChannelOrder::kAlt,
{vk::Format::eB8G8R8A8Srgb, 4}},
{Prospero::ChannelLayout::k5_5_5_1,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR5G5B5A1UnormPack16, 2}},
{Prospero::ChannelLayout::k4_4_4_4,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kReversed,
{vk::Format::eB4G4R4A4UnormPack16, 2}},
{Prospero::ChannelLayout::k10_10_10_2,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eA2B10G10R10UnormPack32, 4}},
{Prospero::ChannelLayout::k10_10_10_2,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kAlt,
{vk::Format::eA2R10G10B10UnormPack32, 4}},
{Prospero::ChannelLayout::k11_11_10,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eB10G11R11UfloatPack32, 4}},
{Prospero::ChannelLayout::k5_6_5,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eB5G6R5UnormPack16, 2}},
{Prospero::ChannelLayout::k16,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16Unorm, 2}},
{Prospero::ChannelLayout::k16,
Prospero::ChannelType::kUInt,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16Uint, 2}},
{Prospero::ChannelLayout::k16,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16Sfloat, 2}},
{Prospero::ChannelLayout::k16_16,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16Unorm, 4}},
{Prospero::ChannelLayout::k16_16,
Prospero::ChannelType::kSNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16Snorm, 4}},
{Prospero::ChannelLayout::k16_16,
Prospero::ChannelType::kUInt,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16Uint, 4}},
{Prospero::ChannelLayout::k16_16,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16Sfloat, 4}},
{Prospero::ChannelLayout::k16_16_16_16,
Prospero::ChannelType::kUNorm,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16B16A16Unorm, 8}},
{Prospero::ChannelLayout::k16_16_16_16,
Prospero::ChannelType::kUInt,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16B16A16Uint, 8}},
{Prospero::ChannelLayout::k16_16_16_16,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR16G16B16A16Sfloat, 8}},
{Prospero::ChannelLayout::k16_16_16_16,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kAlt,
{vk::Format::eR16G16B16A16Sfloat, 8, Prospero::ColorMappingBgra}},
{Prospero::ChannelLayout::k16_16_16_16,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kReversed,
{vk::Format::eR16G16B16A16Sfloat, 8, Prospero::ColorMappingAbgr}},
{Prospero::ChannelLayout::k32,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR32Sfloat, 4}},
{Prospero::ChannelLayout::k32_32,
Prospero::ChannelType::kUInt,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR32G32Uint, 8}},
{Prospero::ChannelLayout::k32_32,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR32G32Sfloat, 8}},
{Prospero::ChannelLayout::k32_32_32_32,
Prospero::ChannelType::kFloat,
Prospero::ChannelOrder::kStandard,
{vk::Format::eR32G32B32A32Sfloat, 16}},
struct RenderTargetHostFormatInfo {
vk::Format format = vk::Format::eUndefined;
Prospero::ColorComponentMapping host_to_storage;
};
RenderTargetHostFormatInfo ResolveRenderTargetHostFormat(Prospero::BufferFormat guest_format,
Prospero::ChannelOrder order) {
if (order == Prospero::ChannelOrder::kAlt) {
switch (guest_format) {
case Prospero::BufferFormat::k8_8_8_8UNorm:
return {vk::Format::eB8G8R8A8Unorm, Prospero::ColorMappingBgra};
case Prospero::BufferFormat::k8_8_8_8SNorm:
return {vk::Format::eB8G8R8A8Snorm, Prospero::ColorMappingBgra};
case Prospero::BufferFormat::k8_8_8_8Srgb:
return {vk::Format::eB8G8R8A8Srgb, Prospero::ColorMappingBgra};
case Prospero::BufferFormat::k10_10_10_2UNorm:
return {vk::Format::eA2R10G10B10UnormPack32, Prospero::ColorMappingBgra};
default: break;
}
}
switch (guest_format) {
case Prospero::BufferFormat::k5_5_5_1UNorm:
return {vk::Format::eA1R5G5B5UnormPack16, 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(Prospero::GpuEnumValue(guest_format)), {}};
}
}
} // namespace
// TODO: cleanup!
RenderTargetFormatInfo TextureGetRenderTargetFormat(uint32_t raw_layout, uint32_t raw_type,
uint32_t raw_order) {
const auto layout = static_cast<Prospero::ChannelLayout>(raw_layout);
const auto type = static_cast<Prospero::ChannelType>(raw_type);
const auto order = static_cast<Prospero::ChannelOrder>(raw_order);
if (layout == Prospero::ChannelLayout::k8 && type == Prospero::ChannelType::kUNorm &&
raw_order <= Prospero::GpuEnumValue(Prospero::ChannelOrder::kAltReversed)) {
return {vk::Format::eR8Unorm, 1};
}
for (const auto& mapping: kRenderTargetFormats) {
if (mapping.layout == layout && mapping.type == type && mapping.order == order) {
return mapping.info;
const auto encoding = Prospero::ResolveRenderTargetFormat(raw_layout, raw_type);
if (encoding.IsValid() && encoding.SupportsOrder(raw_order)) {
const auto order = static_cast<Prospero::ChannelOrder>(raw_order);
const auto host = ResolveRenderTargetHostFormat(encoding.buffer_format, order);
const auto bytes =
Prospero::RenderTargetBytesPerElement(Prospero::GpuEnumValue(encoding.buffer_format));
if (host.format != vk::Format::eUndefined && bytes != 0) {
const auto order_mapping =
kRenderTargetColorMappings[raw_order][encoding.components - 1u];
return {host.format, bytes, host.host_to_storage.Then(order_mapping)};
}
}
EXIT("unsupported render-target format combination: layout=%u type=%u order=%u\n", raw_layout,