decoders: Templates allow memcpy optimizations
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yzct12345
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@ -84,34 +84,107 @@ 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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case 1:
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return SwizzleImpl<TO_LINEAR, 1>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 2:
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return SwizzleImpl<TO_LINEAR, 2>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 3:
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return SwizzleImpl<TO_LINEAR, 3>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 4:
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return SwizzleImpl<TO_LINEAR, 4>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 6:
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return SwizzleImpl<TO_LINEAR, 6>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 8:
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return SwizzleImpl<TO_LINEAR, 8>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 12:
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return SwizzleImpl<TO_LINEAR, 12>(output, input, width, height, depth, block_height,
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block_depth, stride_alignment);
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case 16:
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return SwizzleImpl<TO_LINEAR, 16>(output, input, width, height, depth, block_height,
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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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UNREACHABLE_MSG("Invalid bytes_per_pixel={}", bytes_per_pixel);
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}
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}
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template <u32 BYTES_PER_PIXEL>
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void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
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u8* swizzled_data, const u8* unswizzled_data, u32 block_height_bit,
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u32 offset_x, u32 offset_y) {
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const u32 block_height = 1U << block_height_bit;
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const u32 image_width_in_gobs =
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(swizzled_width * BYTES_PER_PIXEL + (GOB_SIZE_X - 1)) / GOB_SIZE_X;
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for (u32 line = 0; line < subrect_height; ++line) {
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const u32 dst_y = line + offset_y;
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const u32 gob_address_y =
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(dst_y / (GOB_SIZE_Y * block_height)) * GOB_SIZE * block_height * image_width_in_gobs +
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((dst_y % (GOB_SIZE_Y * block_height)) / GOB_SIZE_Y) * GOB_SIZE;
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const auto& table = SWIZZLE_TABLE[dst_y % GOB_SIZE_Y];
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for (u32 x = 0; x < subrect_width; ++x) {
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const u32 dst_x = x + offset_x;
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const u32 gob_address =
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gob_address_y + (dst_x * BYTES_PER_PIXEL / GOB_SIZE_X) * GOB_SIZE * block_height;
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const u32 swizzled_offset = gob_address + table[(dst_x * BYTES_PER_PIXEL) % GOB_SIZE_X];
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const u32 unswizzled_offset = line * source_pitch + x * BYTES_PER_PIXEL;
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const u8* const source_line = unswizzled_data + unswizzled_offset;
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u8* const dest_addr = swizzled_data + swizzled_offset;
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std::memcpy(dest_addr, source_line, BYTES_PER_PIXEL);
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}
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}
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}
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template <u32 BYTES_PER_PIXEL>
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void UnswizzleSubrect(u32 line_length_in, u32 line_count, u32 pitch, u32 width, u32 block_height,
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u32 origin_x, u32 origin_y, u8* output, const u8* input) {
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const u32 stride = width * BYTES_PER_PIXEL;
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const u32 gobs_in_x = (stride + GOB_SIZE_X - 1) / GOB_SIZE_X;
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height);
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 x_shift = GOB_SIZE_SHIFT + block_height;
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for (u32 line = 0; line < line_count; ++line) {
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const u32 src_y = line + origin_y;
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const auto& table = SWIZZLE_TABLE[src_y % GOB_SIZE_Y];
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const u32 block_y = src_y >> GOB_SIZE_Y_SHIFT;
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const u32 src_offset_y = (block_y >> block_height) * block_size +
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((block_y & block_height_mask) << GOB_SIZE_SHIFT);
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for (u32 column = 0; column < line_length_in; ++column) {
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const u32 src_x = (column + origin_x) * BYTES_PER_PIXEL;
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const u32 src_offset_x = (src_x >> GOB_SIZE_X_SHIFT) << x_shift;
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const u32 swizzled_offset = src_offset_y + src_offset_x + table[src_x % GOB_SIZE_X];
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const u32 unswizzled_offset = line * pitch + column * BYTES_PER_PIXEL;
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std::memcpy(output + unswizzled_offset, input + swizzled_offset, BYTES_PER_PIXEL);
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}
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}
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}
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template <u32 BYTES_PER_PIXEL>
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void SwizzleSliceToVoxel(u32 line_length_in, u32 line_count, u32 pitch, u32 width, u32 height,
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u32 block_height, u32 block_depth, u32 origin_x, u32 origin_y, u8* output,
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const u8* input) {
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UNIMPLEMENTED_IF(origin_x > 0);
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UNIMPLEMENTED_IF(origin_y > 0);
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const u32 stride = width * BYTES_PER_PIXEL;
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const u32 gobs_in_x = (stride + GOB_SIZE_X - 1) / GOB_SIZE_X;
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height + block_depth);
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 x_shift = static_cast<u32>(GOB_SIZE_SHIFT) + block_height + block_depth;
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for (u32 line = 0; line < line_count; ++line) {
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const auto& table = SWIZZLE_TABLE[line % GOB_SIZE_Y];
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const u32 block_y = line / GOB_SIZE_Y;
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const u32 dst_offset_y =
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(block_y >> block_height) * block_size + (block_y & block_height_mask) * GOB_SIZE;
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for (u32 x = 0; x < line_length_in; ++x) {
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const u32 dst_offset =
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((x / GOB_SIZE_X) << x_shift) + dst_offset_y + table[x % GOB_SIZE_X];
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const u32 src_offset = x * BYTES_PER_PIXEL + line * pitch;
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std::memcpy(output + dst_offset, input + src_offset, BYTES_PER_PIXEL);
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}
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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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@ -131,81 +204,67 @@ void SwizzleTexture(std::span<u8> output, std::span<const u8> input, u32 bytes_p
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void SwizzleSubrect(u32 subrect_width, u32 subrect_height, u32 source_pitch, u32 swizzled_width,
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u32 bytes_per_pixel, u8* swizzled_data, const u8* unswizzled_data,
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u32 block_height_bit, u32 offset_x, u32 offset_y) {
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const u32 block_height = 1U << block_height_bit;
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const u32 image_width_in_gobs =
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(swizzled_width * bytes_per_pixel + (GOB_SIZE_X - 1)) / GOB_SIZE_X;
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for (u32 line = 0; line < subrect_height; ++line) {
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const u32 dst_y = line + offset_y;
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const u32 gob_address_y =
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(dst_y / (GOB_SIZE_Y * block_height)) * GOB_SIZE * block_height * image_width_in_gobs +
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((dst_y % (GOB_SIZE_Y * block_height)) / GOB_SIZE_Y) * GOB_SIZE;
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const auto& table = SWIZZLE_TABLE[dst_y % GOB_SIZE_Y];
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for (u32 x = 0; x < subrect_width; ++x) {
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const u32 dst_x = x + offset_x;
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const u32 gob_address =
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gob_address_y + (dst_x * bytes_per_pixel / GOB_SIZE_X) * GOB_SIZE * block_height;
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const u32 swizzled_offset = gob_address + table[(dst_x * bytes_per_pixel) % GOB_SIZE_X];
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const u32 unswizzled_offset = line * source_pitch + x * bytes_per_pixel;
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const u8* const source_line = unswizzled_data + unswizzled_offset;
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u8* const dest_addr = swizzled_data + swizzled_offset;
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std::memcpy(dest_addr, source_line, bytes_per_pixel);
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}
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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 SwizzleSubrect<x>(subrect_width, subrect_height, source_pitch, swizzled_width, \
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swizzled_data, unswizzled_data, block_height_bit, offset_x, \
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offset_y);
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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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UNREACHABLE_MSG("Invalid bytes_per_pixel={}", bytes_per_pixel);
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}
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}
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void UnswizzleSubrect(u32 line_length_in, u32 line_count, u32 pitch, u32 width, u32 bytes_per_pixel,
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u32 block_height, u32 origin_x, u32 origin_y, u8* output, const u8* input) {
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const u32 stride = width * bytes_per_pixel;
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const u32 gobs_in_x = (stride + GOB_SIZE_X - 1) / GOB_SIZE_X;
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height);
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 x_shift = GOB_SIZE_SHIFT + block_height;
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for (u32 line = 0; line < line_count; ++line) {
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const u32 src_y = line + origin_y;
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const auto& table = SWIZZLE_TABLE[src_y % GOB_SIZE_Y];
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const u32 block_y = src_y >> GOB_SIZE_Y_SHIFT;
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const u32 src_offset_y = (block_y >> block_height) * block_size +
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((block_y & block_height_mask) << GOB_SIZE_SHIFT);
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for (u32 column = 0; column < line_length_in; ++column) {
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const u32 src_x = (column + origin_x) * bytes_per_pixel;
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const u32 src_offset_x = (src_x >> GOB_SIZE_X_SHIFT) << x_shift;
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const u32 swizzled_offset = src_offset_y + src_offset_x + table[src_x % GOB_SIZE_X];
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const u32 unswizzled_offset = line * pitch + column * bytes_per_pixel;
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std::memcpy(output + unswizzled_offset, input + swizzled_offset, bytes_per_pixel);
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}
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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 UnswizzleSubrect<x>(line_length_in, line_count, pitch, width, block_height, \
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origin_x, origin_y, output, input);
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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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UNREACHABLE_MSG("Invalid bytes_per_pixel={}", bytes_per_pixel);
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}
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}
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void SwizzleSliceToVoxel(u32 line_length_in, u32 line_count, u32 pitch, u32 width, u32 height,
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u32 bytes_per_pixel, u32 block_height, u32 block_depth, u32 origin_x,
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u32 origin_y, u8* output, const u8* input) {
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UNIMPLEMENTED_IF(origin_x > 0);
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UNIMPLEMENTED_IF(origin_y > 0);
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const u32 stride = width * bytes_per_pixel;
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const u32 gobs_in_x = (stride + GOB_SIZE_X - 1) / GOB_SIZE_X;
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const u32 block_size = gobs_in_x << (GOB_SIZE_SHIFT + block_height + block_depth);
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const u32 block_height_mask = (1U << block_height) - 1;
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const u32 x_shift = static_cast<u32>(GOB_SIZE_SHIFT) + block_height + block_depth;
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for (u32 line = 0; line < line_count; ++line) {
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const auto& table = SWIZZLE_TABLE[line % GOB_SIZE_Y];
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const u32 block_y = line / GOB_SIZE_Y;
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const u32 dst_offset_y =
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(block_y >> block_height) * block_size + (block_y & block_height_mask) * GOB_SIZE;
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for (u32 x = 0; x < line_length_in; ++x) {
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const u32 dst_offset =
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((x / GOB_SIZE_X) << x_shift) + dst_offset_y + table[x % GOB_SIZE_X];
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const u32 src_offset = x * bytes_per_pixel + line * pitch;
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std::memcpy(output + dst_offset, input + src_offset, bytes_per_pixel);
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}
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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 SwizzleSliceToVoxel<x>(line_length_in, line_count, pitch, width, height, \
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block_height, block_depth, origin_x, origin_y, output, \
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input);
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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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UNREACHABLE_MSG("Invalid bytes_per_pixel={}", bytes_per_pixel);
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}
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}
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@ -228,7 +287,7 @@ void SwizzleKepler(const u32 width, const u32 height, const u32 dst_x, const u32
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u8* dest_addr = swizzle_data + swizzled_offset;
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count++;
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std::memcpy(dest_addr, source_line, 1);
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*dest_addr = *source_line;
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}
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}
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}
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