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// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <bitset>
#include <cstddef>
#include "video_core/compatible_formats.h"
#include "video_core/surface.h"
namespace VideoCore::Surface {
namespace {
// Compatibility table taken from Table 3.X.2 in:
// https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_texture_view.txt
constexpr std::array VIEW_CLASS_128_BITS = {
PixelFormat::R32G32B32A32_FLOAT,
PixelFormat::R32G32B32A32_UINT,
PixelFormat::R32G32B32A32_SINT,
};
constexpr std::array VIEW_CLASS_96_BITS = {
PixelFormat::R32G32B32_FLOAT,
};
// Missing formats:
// PixelFormat::RGB32UI,
// PixelFormat::RGB32I,
constexpr std::array VIEW_CLASS_64_BITS = {
PixelFormat::R32G32_FLOAT, PixelFormat::R32G32_UINT,
PixelFormat::R32G32_SINT, PixelFormat::R16G16B16A16_FLOAT,
PixelFormat::R16G16B16A16_UNORM, PixelFormat::R16G16B16A16_SNORM,
PixelFormat::R16G16B16A16_UINT, PixelFormat::R16G16B16A16_SINT,
};
// TODO: How should we handle 48 bits?
constexpr std::array VIEW_CLASS_32_BITS = {
PixelFormat::R16G16_FLOAT, PixelFormat::B10G11R11_FLOAT, PixelFormat::R32_FLOAT,
PixelFormat::A2B10G10R10_UNORM, PixelFormat::R16G16_UINT, PixelFormat::R32_UINT,
PixelFormat::R16G16_SINT, PixelFormat::R32_SINT, PixelFormat::A8B8G8R8_UNORM,
PixelFormat::R16G16_UNORM, PixelFormat::A8B8G8R8_SNORM, PixelFormat::R16G16_SNORM,
PixelFormat::A8B8G8R8_SRGB, PixelFormat::E5B9G9R9_FLOAT, PixelFormat::B8G8R8A8_UNORM,
PixelFormat::B8G8R8A8_SRGB, PixelFormat::A8B8G8R8_UINT, PixelFormat::A8B8G8R8_SINT,
PixelFormat::A2B10G10R10_UINT,
};
// TODO: How should we handle 24 bits?
constexpr std::array VIEW_CLASS_16_BITS = {
PixelFormat::R16_FLOAT, PixelFormat::R8G8_UINT, PixelFormat::R16_UINT,
PixelFormat::R16_SINT, PixelFormat::R8G8_UNORM, PixelFormat::R16_UNORM,
PixelFormat::R8G8_SNORM, PixelFormat::R16_SNORM, PixelFormat::R8G8_SINT,
};
constexpr std::array VIEW_CLASS_8_BITS = {
PixelFormat::R8_UINT,
PixelFormat::R8_UNORM,
PixelFormat::R8_SINT,
PixelFormat::R8_SNORM,
};
constexpr std::array VIEW_CLASS_RGTC1_RED = {
PixelFormat::BC4_UNORM,
PixelFormat::BC4_SNORM,
};
constexpr std::array VIEW_CLASS_RGTC2_RG = {
PixelFormat::BC5_UNORM,
PixelFormat::BC5_SNORM,
};
constexpr std::array VIEW_CLASS_BPTC_UNORM = {
PixelFormat::BC7_UNORM,
PixelFormat::BC7_SRGB,
};
constexpr std::array VIEW_CLASS_BPTC_FLOAT = {
PixelFormat::BC6H_SFLOAT,
PixelFormat::BC6H_UFLOAT,
};
// Compatibility table taken from Table 4.X.1 in:
// https://www.khronos.org/registry/OpenGL/extensions/ARB/ARB_copy_image.txt
constexpr std::array COPY_CLASS_128_BITS = {
PixelFormat::R32G32B32A32_UINT, PixelFormat::R32G32B32A32_FLOAT, PixelFormat::R32G32B32A32_SINT,
PixelFormat::BC2_UNORM, PixelFormat::BC2_SRGB, PixelFormat::BC3_UNORM,
PixelFormat::BC3_SRGB, PixelFormat::BC5_UNORM, PixelFormat::BC5_SNORM,
PixelFormat::BC7_UNORM, PixelFormat::BC7_SRGB, PixelFormat::BC6H_SFLOAT,
PixelFormat::BC6H_UFLOAT,
};
// Missing formats:
// PixelFormat::RGBA32I
// COMPRESSED_RG_RGTC2
constexpr std::array COPY_CLASS_64_BITS = {
PixelFormat::R16G16B16A16_FLOAT, PixelFormat::R16G16B16A16_UINT,
PixelFormat::R16G16B16A16_UNORM, PixelFormat::R16G16B16A16_SNORM,
PixelFormat::R16G16B16A16_SINT, PixelFormat::R32G32_UINT,
PixelFormat::R32G32_FLOAT, PixelFormat::R32G32_SINT,
PixelFormat::BC1_RGBA_UNORM, PixelFormat::BC1_RGBA_SRGB,
};
// Missing formats:
// COMPRESSED_RGB_S3TC_DXT1_EXT
// COMPRESSED_SRGB_S3TC_DXT1_EXT
// COMPRESSED_RGBA_S3TC_DXT1_EXT
// COMPRESSED_SIGNED_RED_RGTC1
void Enable(FormatCompatibility::Table& compatiblity, size_t format_a, size_t format_b) {
compatiblity[format_a][format_b] = true;
compatiblity[format_b][format_a] = true;
}
void Enable(FormatCompatibility::Table& compatibility, PixelFormat format_a, PixelFormat format_b) {
Enable(compatibility, static_cast<size_t>(format_a), static_cast<size_t>(format_b));
}
template <typename Range>
void EnableRange(FormatCompatibility::Table& compatibility, const Range& range) {
for (auto it_a = range.begin(); it_a != range.end(); ++it_a) {
for (auto it_b = it_a; it_b != range.end(); ++it_b) {
Enable(compatibility, *it_a, *it_b);
}
}
}
} // Anonymous namespace
FormatCompatibility::FormatCompatibility() {
for (size_t i = 0; i < MaxPixelFormat; ++i) {
// Identity is allowed
Enable(view, i, i);
}
EnableRange(view, VIEW_CLASS_128_BITS);
EnableRange(view, VIEW_CLASS_96_BITS);
EnableRange(view, VIEW_CLASS_64_BITS);
EnableRange(view, VIEW_CLASS_32_BITS);
EnableRange(view, VIEW_CLASS_16_BITS);
EnableRange(view, VIEW_CLASS_8_BITS);
EnableRange(view, VIEW_CLASS_RGTC1_RED);
EnableRange(view, VIEW_CLASS_RGTC2_RG);
EnableRange(view, VIEW_CLASS_BPTC_UNORM);
EnableRange(view, VIEW_CLASS_BPTC_FLOAT);
copy = view;
EnableRange(copy, COPY_CLASS_128_BITS);
EnableRange(copy, COPY_CLASS_64_BITS);
}
} // namespace VideoCore::Surface
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