276 lines
12 KiB
C++
276 lines
12 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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#include <array>
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#include <cmath>
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#include <cstring>
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#include <span>
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/bit_util.h"
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#include "common/div_ceil.h"
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#include "video_core/gpu.h"
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#include "video_core/textures/decoders.h"
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namespace Tegra::Texture {
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namespace {
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template <u32 mask>
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constexpr u32 pdep(u32 value) {
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u32 result = 0;
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u32 m = mask;
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for (u32 bit = 1; m; bit += bit) {
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if (value & bit)
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result |= m & (~m + 1);
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m &= m - 1;
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}
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return result;
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}
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template <u32 mask, u32 incr_amount>
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void incrpdep(u32& value) {
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static constexpr u32 swizzled_incr = pdep<mask>(incr_amount);
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value = ((value | ~mask) + swizzled_incr) & mask;
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}
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template <bool TO_LINEAR, u32 BYTES_PER_PIXEL>
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void SwizzleImpl(std::span<u8> output, std::span<const u8> input, u32 width, u32 height, u32 depth,
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u32 block_height, u32 block_depth, u32 stride) {
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// The origin of the transformation can be configured here, leave it as zero as the current API
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// doesn't expose it.
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static constexpr u32 origin_x = 0;
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static constexpr u32 origin_y = 0;
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static constexpr u32 origin_z = 0;
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// We can configure here a custom pitch
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// As it's not exposed 'width * BYTES_PER_PIXEL' will be the expected pitch.
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const u32 pitch = width * BYTES_PER_PIXEL;
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const u32 gobs_in_x = Common::DivCeilLog2(stride, GOB_SIZE_X_SHIFT);
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height + block_depth);
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const u32 slice_size =
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Common::DivCeilLog2(height, block_height + GOB_SIZE_Y_SHIFT) * block_size;
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 block_depth_mask = (1U << block_depth) - 1;
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const u32 x_shift = GOB_SIZE_SHIFT + block_height + block_depth;
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for (u32 slice = 0; slice < depth; ++slice) {
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const u32 z = slice + origin_z;
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const u32 offset_z = (z >> block_depth) * slice_size +
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((z & block_depth_mask) << (GOB_SIZE_SHIFT + block_height));
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for (u32 line = 0; line < height; ++line) {
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const u32 y = line + origin_y;
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const u32 swizzled_y = pdep<SWIZZLE_Y_BITS>(y);
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const u32 block_y = y >> GOB_SIZE_Y_SHIFT;
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const u32 offset_y = (block_y >> block_height) * block_size +
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((block_y & block_height_mask) << GOB_SIZE_SHIFT);
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u32 swizzled_x = pdep<SWIZZLE_X_BITS>(origin_x * BYTES_PER_PIXEL);
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for (u32 column = 0; column < width;
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++column, incrpdep<SWIZZLE_X_BITS, BYTES_PER_PIXEL>(swizzled_x)) {
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const u32 x = (column + origin_x) * BYTES_PER_PIXEL;
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const u32 offset_x = (x >> GOB_SIZE_X_SHIFT) << x_shift;
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const u32 base_swizzled_offset = offset_z + offset_y + offset_x;
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const u32 swizzled_offset = base_swizzled_offset + (swizzled_x | swizzled_y);
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const u32 unswizzled_offset =
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slice * pitch * height + line * pitch + column * BYTES_PER_PIXEL;
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u8* const dst = &output[TO_LINEAR ? swizzled_offset : unswizzled_offset];
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const u8* const src = &input[TO_LINEAR ? unswizzled_offset : swizzled_offset];
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std::memcpy(dst, src, BYTES_PER_PIXEL);
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}
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}
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}
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}
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template <bool TO_LINEAR, u32 BYTES_PER_PIXEL>
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void SwizzleSubrectImpl(std::span<u8> output, std::span<const u8> input, u32 width, u32 height,
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u32 depth, u32 origin_x, u32 origin_y, u32 extent_x, u32 num_lines,
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u32 block_height, u32 block_depth, u32 pitch_linear) {
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// The origin of the transformation can be configured here, leave it as zero as the current API
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// doesn't expose it.
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static constexpr u32 origin_z = 0;
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// We can configure here a custom pitch
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// As it's not exposed 'width * BYTES_PER_PIXEL' will be the expected pitch.
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const u32 pitch = pitch_linear;
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const u32 stride = Common::AlignUpLog2(width * BYTES_PER_PIXEL, GOB_SIZE_X_SHIFT);
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const u32 gobs_in_x = Common::DivCeilLog2(stride, GOB_SIZE_X_SHIFT);
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height + block_depth);
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const u32 slice_size =
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Common::DivCeilLog2(height, block_height + GOB_SIZE_Y_SHIFT) * block_size;
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 block_depth_mask = (1U << block_depth) - 1;
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const u32 x_shift = GOB_SIZE_SHIFT + block_height + block_depth;
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u32 unprocessed_lines = num_lines;
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u32 extent_y = std::min(num_lines, height - origin_y);
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for (u32 slice = 0; slice < depth; ++slice) {
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const u32 z = slice + origin_z;
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const u32 offset_z = (z >> block_depth) * slice_size +
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((z & block_depth_mask) << (GOB_SIZE_SHIFT + block_height));
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const u32 lines_in_y = std::min(unprocessed_lines, extent_y);
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for (u32 line = 0; line < lines_in_y; ++line) {
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const u32 y = line + origin_y;
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const u32 swizzled_y = pdep<SWIZZLE_Y_BITS>(y);
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const u32 block_y = y >> GOB_SIZE_Y_SHIFT;
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const u32 offset_y = (block_y >> block_height) * block_size +
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((block_y & block_height_mask) << GOB_SIZE_SHIFT);
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u32 swizzled_x = pdep<SWIZZLE_X_BITS>(origin_x * BYTES_PER_PIXEL);
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for (u32 column = 0; column < extent_x;
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++column, incrpdep<SWIZZLE_X_BITS, BYTES_PER_PIXEL>(swizzled_x)) {
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const u32 x = (column + origin_x) * BYTES_PER_PIXEL;
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const u32 offset_x = (x >> GOB_SIZE_X_SHIFT) << x_shift;
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const u32 base_swizzled_offset = offset_z + offset_y + offset_x;
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const u32 swizzled_offset = base_swizzled_offset + (swizzled_x | swizzled_y);
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const u32 unswizzled_offset =
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slice * pitch * height + line * pitch + column * BYTES_PER_PIXEL;
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u8* const dst = &output[TO_LINEAR ? swizzled_offset : unswizzled_offset];
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const u8* const src = &input[TO_LINEAR ? unswizzled_offset : swizzled_offset];
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std::memcpy(dst, src, BYTES_PER_PIXEL);
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}
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}
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unprocessed_lines -= lines_in_y;
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if (unprocessed_lines == 0) {
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return;
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}
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}
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}
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template <bool TO_LINEAR>
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void Swizzle(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, u32 stride_alignment) {
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switch (bytes_per_pixel) {
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#define BPP_CASE(x) \
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case x: \
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return SwizzleImpl<TO_LINEAR, x>(output, input, width, height, depth, block_height, \
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block_depth, stride_alignment);
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BPP_CASE(1)
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BPP_CASE(2)
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BPP_CASE(3)
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BPP_CASE(4)
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BPP_CASE(6)
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BPP_CASE(8)
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BPP_CASE(12)
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BPP_CASE(16)
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#undef BPP_CASE
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default:
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ASSERT_MSG(false, "Invalid bytes_per_pixel={}", bytes_per_pixel);
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break;
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}
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}
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} // Anonymous namespace
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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) {
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const u32 stride = Common::AlignUpLog2(width, stride_alignment) * bytes_per_pixel;
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const u32 new_bpp = std::min(4U, static_cast<u32>(std::countr_zero(width * bytes_per_pixel)));
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width = (width * bytes_per_pixel) >> new_bpp;
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bytes_per_pixel = 1U << new_bpp;
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Swizzle<false>(output, input, bytes_per_pixel, width, height, depth, block_height, block_depth,
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stride);
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}
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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) {
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const u32 stride = Common::AlignUpLog2(width, stride_alignment) * bytes_per_pixel;
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const u32 new_bpp = std::min(4U, static_cast<u32>(std::countr_zero(width * bytes_per_pixel)));
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width = (width * bytes_per_pixel) >> new_bpp;
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bytes_per_pixel = 1U << new_bpp;
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Swizzle<true>(output, input, bytes_per_pixel, width, height, depth, block_height, block_depth,
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stride);
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}
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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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switch (bytes_per_pixel) {
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#define BPP_CASE(x) \
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case x: \
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return SwizzleSubrectImpl<true, x>(output, input, width, height, depth, origin_x, \
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origin_y, extent_x, extent_y, block_height, \
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block_depth, pitch_linear);
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BPP_CASE(1)
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BPP_CASE(2)
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BPP_CASE(3)
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BPP_CASE(4)
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BPP_CASE(6)
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BPP_CASE(8)
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BPP_CASE(12)
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BPP_CASE(16)
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#undef BPP_CASE
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default:
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ASSERT_MSG(false, "Invalid bytes_per_pixel={}", bytes_per_pixel);
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break;
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}
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}
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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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switch (bytes_per_pixel) {
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#define BPP_CASE(x) \
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case x: \
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return SwizzleSubrectImpl<false, x>(output, input, width, height, depth, origin_x, \
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origin_y, extent_x, extent_y, block_height, \
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block_depth, pitch_linear);
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BPP_CASE(1)
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BPP_CASE(2)
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BPP_CASE(3)
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BPP_CASE(4)
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BPP_CASE(6)
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BPP_CASE(8)
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BPP_CASE(12)
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BPP_CASE(16)
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#undef BPP_CASE
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default:
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ASSERT_MSG(false, "Invalid bytes_per_pixel={}", bytes_per_pixel);
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break;
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}
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}
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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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if (tiled) {
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const u32 aligned_width = Common::AlignUpLog2(width * bytes_per_pixel, GOB_SIZE_X_SHIFT);
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const u32 aligned_height = Common::AlignUpLog2(height, GOB_SIZE_Y_SHIFT + block_height);
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const u32 aligned_depth = Common::AlignUpLog2(depth, GOB_SIZE_Z_SHIFT + block_depth);
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return aligned_width * aligned_height * aligned_depth;
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} else {
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return width * height * depth * bytes_per_pixel;
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}
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}
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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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auto div_ceil = [](const u32 x, const u32 y) { return ((x + y - 1) / y); };
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const u32 gobs_in_block = 1 << block_height;
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const u32 y_blocks = GOB_SIZE_Y << block_height;
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const u32 x_per_gob = GOB_SIZE_X / bytes_per_pixel;
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const u32 x_blocks = div_ceil(width, x_per_gob);
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const u32 block_size = GOB_SIZE * gobs_in_block;
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const u32 stride = block_size * x_blocks;
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const u32 base = (dst_y / y_blocks) * stride + (dst_x / x_per_gob) * block_size;
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const u32 relative_y = dst_y % y_blocks;
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return base + (relative_y / GOB_SIZE_Y) * GOB_SIZE;
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}
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} // namespace Tegra::Texture
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