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73 lines
3.0 KiB
C++
73 lines
3.0 KiB
C++
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <span>
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#include "common/common_types.h"
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#include "video_core/textures/texture.h"
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namespace Tegra::Texture {
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constexpr u32 GOB_SIZE_X = 64;
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constexpr u32 GOB_SIZE_Y = 8;
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constexpr u32 GOB_SIZE_Z = 1;
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constexpr u32 GOB_SIZE = GOB_SIZE_X * GOB_SIZE_Y * GOB_SIZE_Z;
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constexpr u32 GOB_SIZE_X_SHIFT = 6;
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constexpr u32 GOB_SIZE_Y_SHIFT = 3;
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constexpr u32 GOB_SIZE_Z_SHIFT = 0;
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constexpr u32 GOB_SIZE_SHIFT = GOB_SIZE_X_SHIFT + GOB_SIZE_Y_SHIFT + GOB_SIZE_Z_SHIFT;
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constexpr u32 SWIZZLE_X_BITS = 0b100101111;
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constexpr u32 SWIZZLE_Y_BITS = 0b011010000;
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using SwizzleTable = std::array<std::array<u32, GOB_SIZE_X>, GOB_SIZE_Y>;
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/**
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* This table represents the internal swizzle of a gob, in format 16 bytes x 2 sector packing.
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* Calculates the offset of an (x, y) position within a swizzled texture.
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* Taken from the Tegra X1 Technical Reference Manual. pages 1187-1188
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*/
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constexpr SwizzleTable MakeSwizzleTable() {
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SwizzleTable table{};
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for (u32 y = 0; y < table.size(); ++y) {
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for (u32 x = 0; x < table[0].size(); ++x) {
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table[y][x] = ((x % 64) / 32) * 256 + ((y % 8) / 2) * 64 + ((x % 32) / 16) * 32 +
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(y % 2) * 16 + (x % 16);
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}
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}
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return table;
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}
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/// Unswizzles a block linear texture into linear memory.
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void UnswizzleTexture(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel,
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u32 width, u32 height, u32 depth, u32 block_height, u32 block_depth,
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u32 stride_alignment = 1);
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/// Swizzles linear memory into a block linear texture.
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void SwizzleTexture(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel, u32 width,
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u32 height, u32 depth, u32 block_height, u32 block_depth,
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u32 stride_alignment = 1);
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/// This function calculates the correct size of a texture depending if it's tiled or not.
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std::size_t CalculateSize(bool tiled, u32 bytes_per_pixel, u32 width, u32 height, u32 depth,
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u32 block_height, u32 block_depth);
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/// Copies an untiled subrectangle into a tiled surface.
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void SwizzleSubrect(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel, u32 width,
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u32 height, u32 depth, u32 origin_x, u32 origin_y, u32 extent_x, u32 extent_y,
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u32 block_height, u32 block_depth, u32 pitch_linear);
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/// Copies a tiled subrectangle into a linear surface.
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void UnswizzleSubrect(std::span<u8> output, std::span<const u8> input, u32 bytes_per_pixel,
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u32 width, u32 height, u32 depth, u32 origin_x, u32 origin_y, u32 extent_x,
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u32 extent_y, u32 block_height, u32 block_depth, u32 pitch_linear);
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/// Obtains the offset of the gob for positions 'dst_x' & 'dst_y'
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u64 GetGOBOffset(u32 width, u32 height, u32 dst_x, u32 dst_y, u32 block_height,
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u32 bytes_per_pixel);
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} // namespace Tegra::Texture
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