mirror of
https://git.suyu.dev/suyu/suyu
synced 2024-11-05 14:57:53 +00:00
187 lines
6.7 KiB
C++
187 lines
6.7 KiB
C++
// Copyright 2018 yuzu Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include <cmath>
|
|
#include <cstring>
|
|
#include "common/assert.h"
|
|
#include "core/memory.h"
|
|
#include "video_core/gpu.h"
|
|
#include "video_core/textures/decoders.h"
|
|
#include "video_core/textures/texture.h"
|
|
|
|
namespace Tegra::Texture {
|
|
|
|
/**
|
|
* Calculates the offset of an (x, y) position within a swizzled texture.
|
|
* Taken from the Tegra X1 TRM.
|
|
*/
|
|
static u32 GetSwizzleOffset(u32 x, u32 y, u32 image_width, u32 bytes_per_pixel, u32 block_height) {
|
|
// Round up to the next gob
|
|
const u32 image_width_in_gobs{(image_width * bytes_per_pixel + 63) / 64};
|
|
|
|
u32 GOB_address = 0 + (y / (8 * block_height)) * 512 * block_height * image_width_in_gobs +
|
|
(x * bytes_per_pixel / 64) * 512 * block_height +
|
|
(y % (8 * block_height) / 8) * 512;
|
|
x *= bytes_per_pixel;
|
|
u32 address = GOB_address + ((x % 64) / 32) * 256 + ((y % 8) / 2) * 64 + ((x % 32) / 16) * 32 +
|
|
(y % 2) * 16 + (x % 16);
|
|
|
|
return address;
|
|
}
|
|
|
|
void CopySwizzledData(u32 width, u32 height, u32 bytes_per_pixel, u32 out_bytes_per_pixel,
|
|
u8* swizzled_data, u8* unswizzled_data, bool unswizzle, u32 block_height) {
|
|
u8* data_ptrs[2];
|
|
for (unsigned y = 0; y < height; ++y) {
|
|
for (unsigned x = 0; x < width; ++x) {
|
|
u32 swizzle_offset = GetSwizzleOffset(x, y, width, bytes_per_pixel, block_height);
|
|
u32 pixel_index = (x + y * width) * out_bytes_per_pixel;
|
|
|
|
data_ptrs[unswizzle] = swizzled_data + swizzle_offset;
|
|
data_ptrs[!unswizzle] = &unswizzled_data[pixel_index];
|
|
|
|
std::memcpy(data_ptrs[0], data_ptrs[1], bytes_per_pixel);
|
|
}
|
|
}
|
|
}
|
|
|
|
template <std::size_t N, std::size_t M>
|
|
struct alignas(64) SwizzleTable {
|
|
constexpr SwizzleTable() {
|
|
for (u32 y = 0; y < N; ++y) {
|
|
for (u32 x = 0; x < M; ++x) {
|
|
const u32 x2 = x * 16;
|
|
values[y][x] = static_cast<u16>(((x2 % 64) / 32) * 256 + ((y % 8) / 2) * 64 +
|
|
((x2 % 32) / 16) * 32 + (y % 2) * 16);
|
|
}
|
|
}
|
|
}
|
|
const std::array<u16, M>& operator[](std::size_t index) const {
|
|
return values[index];
|
|
}
|
|
std::array<std::array<u16, M>, N> values{};
|
|
};
|
|
|
|
constexpr auto swizzle_table = SwizzleTable<8, 4>();
|
|
|
|
void FastSwizzleData(u32 width, u32 height, u32 bytes_per_pixel, u8* swizzled_data,
|
|
u8* unswizzled_data, bool unswizzle, u32 block_height) {
|
|
std::array<u8*, 2> data_ptrs;
|
|
const std::size_t stride{width * bytes_per_pixel};
|
|
const std::size_t image_width_in_gobs{(stride + 63) / 64};
|
|
const std::size_t copy_size{16};
|
|
for (std::size_t y = 0; y < height; ++y) {
|
|
const std::size_t initial_gob =
|
|
(y / (8 * block_height)) * 512 * block_height * image_width_in_gobs +
|
|
(y % (8 * block_height) / 8) * 512;
|
|
const std::size_t pixel_base{y * width * bytes_per_pixel};
|
|
const auto& table = swizzle_table[y % 8];
|
|
for (std::size_t xb = 0; xb < stride; xb += copy_size) {
|
|
const std::size_t gob_address{initial_gob + (xb / 64) * 512 * block_height};
|
|
const std::size_t swizzle_offset{gob_address + table[(xb / 16) % 4]};
|
|
const std::size_t pixel_index{xb + pixel_base};
|
|
data_ptrs[unswizzle] = swizzled_data + swizzle_offset;
|
|
data_ptrs[!unswizzle] = unswizzled_data + pixel_index;
|
|
std::memcpy(data_ptrs[0], data_ptrs[1], copy_size);
|
|
}
|
|
}
|
|
}
|
|
|
|
u32 BytesPerPixel(TextureFormat format) {
|
|
switch (format) {
|
|
case TextureFormat::DXT1:
|
|
case TextureFormat::DXN1:
|
|
// In this case a 'pixel' actually refers to a 4x4 tile.
|
|
return 8;
|
|
case TextureFormat::DXT23:
|
|
case TextureFormat::DXT45:
|
|
case TextureFormat::DXN2:
|
|
case TextureFormat::BC7U:
|
|
case TextureFormat::BC6H_UF16:
|
|
case TextureFormat::BC6H_SF16:
|
|
// In this case a 'pixel' actually refers to a 4x4 tile.
|
|
return 16;
|
|
case TextureFormat::R32_G32_B32:
|
|
return 12;
|
|
case TextureFormat::ASTC_2D_4X4:
|
|
case TextureFormat::ASTC_2D_8X8:
|
|
case TextureFormat::A8R8G8B8:
|
|
case TextureFormat::A2B10G10R10:
|
|
case TextureFormat::BF10GF11RF11:
|
|
case TextureFormat::R32:
|
|
case TextureFormat::R16_G16:
|
|
return 4;
|
|
case TextureFormat::A1B5G5R5:
|
|
case TextureFormat::B5G6R5:
|
|
case TextureFormat::G8R8:
|
|
case TextureFormat::R16:
|
|
return 2;
|
|
case TextureFormat::R8:
|
|
return 1;
|
|
case TextureFormat::R16_G16_B16_A16:
|
|
return 8;
|
|
case TextureFormat::R32_G32_B32_A32:
|
|
return 16;
|
|
case TextureFormat::R32_G32:
|
|
return 8;
|
|
default:
|
|
UNIMPLEMENTED_MSG("Format not implemented");
|
|
break;
|
|
}
|
|
}
|
|
|
|
std::vector<u8> UnswizzleTexture(VAddr address, u32 tile_size, u32 bytes_per_pixel, u32 width,
|
|
u32 height, u32 block_height) {
|
|
std::vector<u8> unswizzled_data(width * height * bytes_per_pixel);
|
|
if (bytes_per_pixel % 3 != 0 && (width * bytes_per_pixel) % 16 == 0) {
|
|
FastSwizzleData(width / tile_size, height / tile_size, bytes_per_pixel,
|
|
Memory::GetPointer(address), unswizzled_data.data(), true, block_height);
|
|
} else {
|
|
CopySwizzledData(width / tile_size, height / tile_size, bytes_per_pixel, bytes_per_pixel,
|
|
Memory::GetPointer(address), unswizzled_data.data(), true, block_height);
|
|
}
|
|
return unswizzled_data;
|
|
}
|
|
|
|
std::vector<u8> DecodeTexture(const std::vector<u8>& texture_data, TextureFormat format, u32 width,
|
|
u32 height) {
|
|
std::vector<u8> rgba_data;
|
|
|
|
// TODO(Subv): Implement.
|
|
switch (format) {
|
|
case TextureFormat::DXT1:
|
|
case TextureFormat::DXT23:
|
|
case TextureFormat::DXT45:
|
|
case TextureFormat::DXN1:
|
|
case TextureFormat::DXN2:
|
|
case TextureFormat::BC7U:
|
|
case TextureFormat::BC6H_UF16:
|
|
case TextureFormat::BC6H_SF16:
|
|
case TextureFormat::ASTC_2D_4X4:
|
|
case TextureFormat::ASTC_2D_8X8:
|
|
case TextureFormat::A8R8G8B8:
|
|
case TextureFormat::A2B10G10R10:
|
|
case TextureFormat::A1B5G5R5:
|
|
case TextureFormat::B5G6R5:
|
|
case TextureFormat::R8:
|
|
case TextureFormat::G8R8:
|
|
case TextureFormat::BF10GF11RF11:
|
|
case TextureFormat::R32_G32_B32_A32:
|
|
case TextureFormat::R32_G32:
|
|
case TextureFormat::R32:
|
|
case TextureFormat::R16:
|
|
case TextureFormat::R16_G16:
|
|
case TextureFormat::R32_G32_B32:
|
|
// TODO(Subv): For the time being just forward the same data without any decoding.
|
|
rgba_data = texture_data;
|
|
break;
|
|
default:
|
|
UNIMPLEMENTED_MSG("Format not implemented");
|
|
break;
|
|
}
|
|
|
|
return rgba_data;
|
|
}
|
|
|
|
} // namespace Tegra::Texture
|