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Code Issues Releases Activity

Implement Fast 3D Swizzle

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This commit is contained in:
FernandoS27 2018-10-10 22:03:38 -04:00
parent 1584fb6b38
commit 736db284d2
1 changed files with 74 additions and 2 deletions
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76
src/video_core/textures/decoders.cpp
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@ -98,11 +98,83 @@ static void FastSwizzleData(u32 width, u32 height, u32 bytes_per_pixel, u32 out_
}
}
void Fast3DProcessGobs(u8* swizzled_data, u8* unswizzled_data, bool unswizzle, const u32 x_start,
const u32 y_start, const u32 z_start, const u32 x_end, const u32 y_end,
const u32 z_end, const u32 tile_offset, const u32 xy_block_size,
const u32 layer_z, const u32 stride_x, const u32 bytes_per_pixel,
const u32 out_bytes_per_pixel) {
std::array<u8*, 2> data_ptrs;
u32 z_adress = tile_offset;
const u32 x_startb = x_start * bytes_per_pixel;
const u32 x_endb = x_end * bytes_per_pixel;
const u32 copy_size = 16;
const u32 gob_size = 64 * 8 * 1;
for (u32 z = z_start; z < z_end; z++) {
u32 y_adress = z_adress;
u32 pixel_base = layer_z * z + y_start * stride_x;
for (u32 y = y_start; y < y_end; y++) {
const auto& table = fast_swizzle_table[y % 8];
for (u32 xb = x_startb; xb < x_endb; xb += copy_size) {
const u32 swizzle_offset{y_adress + table[(xb / 16) % 4]};
const u32 out_x = xb * out_bytes_per_pixel / bytes_per_pixel;
const u32 pixel_index{out_x + 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);
}
pixel_base += stride_x;
if ((y + 1) % 8 == 0)
y_adress += gob_size;
}
z_adress += xy_block_size;
}
}
void Fast3DSwizzledData(u8* swizzled_data, u8* unswizzled_data, bool unswizzle, u32 width,
u32 height, u32 depth, u32 bytes_per_pixel, u32 out_bytes_per_pixel,
u32 block_height, u32 block_depth) {
auto div_ceil = [](u32 x, u32 y) { return ((x + y - 1) / y); };
const u32 stride_x = width * out_bytes_per_pixel;
const u32 layer_z = height * stride_x;
const u32 gob_x_bytes = 64;
const u32 gob_elements_x = gob_x_bytes / bytes_per_pixel;
const u32 gob_elements_y = 8;
const u32 gob_elements_z = 1;
const u32 block_x_elements = gob_elements_x;
const u32 block_y_elements = gob_elements_y * block_height;
const u32 block_z_elements = gob_elements_z * block_depth;
const u32 blocks_on_x = div_ceil(width, block_x_elements);
const u32 blocks_on_y = div_ceil(height, block_y_elements);
const u32 blocks_on_z = div_ceil(depth, block_z_elements);
const u32 blocks = blocks_on_x * blocks_on_y * blocks_on_z;
const u32 gob_size = 64 * 8 * 1;
const u32 xy_block_size = gob_size * block_height;
const u32 block_size = xy_block_size * block_depth;
u32 tile_offset = 0;
for (u32 zb = 0; zb < blocks_on_z; zb++) {
const u32 z_start = zb * block_z_elements;
const u32 z_end = std::min(depth, z_start + block_z_elements);
for (u32 yb = 0; yb < blocks_on_y; yb++) {
const u32 y_start = yb * block_y_elements;
const u32 y_end = std::min(height, y_start + block_y_elements);
for (u32 xb = 0; xb < blocks_on_x; xb++) {
const u32 x_start = xb * block_x_elements;
const u32 x_end = std::min(width, x_start + block_x_elements);
Fast3DProcessGobs(swizzled_data, unswizzled_data, unswizzle, x_start, y_start,
z_start, x_end, y_end, z_end, tile_offset, xy_block_size, layer_z,
stride_x, bytes_per_pixel, out_bytes_per_pixel);
tile_offset += block_size;
}
}
}
}
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) {
if (bytes_per_pixel % 3 != 0 && (width * bytes_per_pixel) % 16 == 0) {
FastSwizzleData(width, height, bytes_per_pixel, out_bytes_per_pixel, swizzled_data,
unswizzled_data, unswizzle, block_height);
Fast3DSwizzledData(swizzled_data, unswizzled_data, unswizzle, width, height, 1U,
bytes_per_pixel, out_bytes_per_pixel, block_height, 1U);
} else {
LegacySwizzleData(width, height, bytes_per_pixel, out_bytes_per_pixel, swizzled_data,
unswizzled_data, unswizzle, block_height);