forked from suyu/suyu
astc_decoder: Make use of uvec4 for payload data
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ameerj
parent
a75d70fa90
commit
b2862e4772
1 changed files with 43 additions and 79 deletions
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@ -59,7 +59,7 @@ layout(binding = BINDING_SWIZZLE_BUFFER, std430) readonly buffer SwizzleTable {
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};
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layout(binding = BINDING_INPUT_BUFFER, std430) readonly buffer InputBufferU32 {
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uint astc_data[];
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uvec4 astc_data[];
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};
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layout(binding = BINDING_OUTPUT_IMAGE, rgba8) uniform writeonly image2DArray dest_image;
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@ -141,32 +141,28 @@ const uint REPLICATE_7_BIT_TO_8_TABLE[128] =
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// Input ASTC texture globals
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uint current_index = 0;
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int bitsread = 0;
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uint total_bitsread = 0;
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uint local_buff[16];
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int total_bitsread = 0;
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uvec4 local_buff;
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// Color data globals
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uint color_endpoint_data[16];
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uvec4 color_endpoint_data;
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int color_bitsread = 0;
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uint total_color_bitsread = 0;
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int color_index = 0;
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// Four values, two endpoints, four maximum paritions
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uint color_values[32];
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int colvals_index = 0;
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// Weight data globals
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uint texel_weight_data[16];
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uvec4 texel_weight_data;
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int texel_bitsread = 0;
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uint total_texel_bitsread = 0;
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int texel_index = 0;
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bool texel_flag = false;
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// Global "vectors" to be pushed into when decoding
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EncodingData result_vector[100];
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EncodingData result_vector[144];
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int result_index = 0;
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EncodingData texel_vector[100];
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EncodingData texel_vector[144];
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int texel_vector_index = 0;
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uint unquantized_texel_weights[2][144];
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@ -176,11 +172,6 @@ uint SwizzleOffset(uvec2 pos) {
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return swizzle_table[pos.y * 64 + pos.x];
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}
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uint ReadTexel(uint offset) {
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// extract the 8-bit value from the 32-bit packed data.
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return bitfieldExtract(astc_data[offset / 4], int((offset * 8) & 24), 8);
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}
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// Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)]
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// is the same as [(num_bits - 1):0] and repeats all the way down.
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uint Replicate(uint val, uint num_bits, uint to_bit) {
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@ -356,54 +347,37 @@ uint Select2DPartition(uint seed, uint x, uint y, uint partition_count, bool sma
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}
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}
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uint ReadBit() {
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if (current_index >= local_buff.length()) {
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uint ExtractBits(uvec4 payload, int offset, int bits) {
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if (bits <= 0) {
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return 0;
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}
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uint bit = bitfieldExtract(local_buff[current_index], bitsread, 1);
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++bitsread;
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++total_bitsread;
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if (bitsread == 8) {
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++current_index;
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bitsread = 0;
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int last_offset = offset + bits - 1;
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int shifted_offset = offset >> 5;
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if ((last_offset >> 5) == shifted_offset) {
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return bitfieldExtract(payload[shifted_offset], offset & 31, bits);
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}
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return bit;
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int first_bits = 32 - (offset & 31);
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int result_first = int(bitfieldExtract(payload[shifted_offset], offset & 31, first_bits));
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int result_second = int(bitfieldExtract(payload[shifted_offset + 1], 0, bits - first_bits));
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return result_first | (result_second << first_bits);
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}
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uint StreamBits(uint num_bits) {
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uint ret = 0;
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for (uint i = 0; i < num_bits; i++) {
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ret |= ((ReadBit() & 1) << i);
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}
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int int_bits = int(num_bits);
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uint ret = ExtractBits(local_buff, total_bitsread, int_bits);
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total_bitsread += int_bits;
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return ret;
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}
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uint ReadColorBit() {
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uint bit = 0;
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if (texel_flag) {
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bit = bitfieldExtract(texel_weight_data[texel_index], texel_bitsread, 1);
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++texel_bitsread;
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++total_texel_bitsread;
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if (texel_bitsread == 8) {
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++texel_index;
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texel_bitsread = 0;
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}
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} else {
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bit = bitfieldExtract(color_endpoint_data[color_index], color_bitsread, 1);
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++color_bitsread;
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++total_color_bitsread;
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if (color_bitsread == 8) {
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++color_index;
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color_bitsread = 0;
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}
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}
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return bit;
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}
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uint StreamColorBits(uint num_bits) {
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uint ret = 0;
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for (uint i = 0; i < num_bits; i++) {
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ret |= ((ReadColorBit() & 1) << i);
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int int_bits = int(num_bits);
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if (texel_flag) {
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ret = ExtractBits(texel_weight_data, texel_bitsread, int_bits);
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texel_bitsread += int_bits;
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} else {
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ret = ExtractBits(color_endpoint_data, color_bitsread, int_bits);
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color_bitsread += int_bits;
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}
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return ret;
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}
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@ -1006,7 +980,7 @@ int FindLayout(uint mode) {
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return 5;
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}
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TexelWeightParams DecodeBlockInfo(uint block_index) {
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TexelWeightParams DecodeBlockInfo() {
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TexelWeightParams params = TexelWeightParams(uvec2(0), 0, false, false, false, false);
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uint mode = StreamBits(11);
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if ((mode & 0x1ff) == 0x1fc) {
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@ -1122,8 +1096,8 @@ void FillVoidExtentLDR(ivec3 coord) {
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}
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}
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void DecompressBlock(ivec3 coord, uint block_index) {
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TexelWeightParams params = DecodeBlockInfo(block_index);
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void DecompressBlock(ivec3 coord) {
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TexelWeightParams params = DecodeBlockInfo();
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if (params.error_state) {
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FillError(coord);
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return;
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@ -1190,7 +1164,7 @@ void DecompressBlock(ivec3 coord, uint block_index) {
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// Read color data...
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uint color_data_bits = remaining_bits;
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while (remaining_bits > 0) {
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int nb = int(min(remaining_bits, 8U));
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int nb = int(min(remaining_bits, 32U));
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uint b = StreamBits(nb);
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color_endpoint_data[ced_pointer] = uint(bitfieldExtract(b, 0, nb));
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++ced_pointer;
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@ -1232,25 +1206,20 @@ void DecompressBlock(ivec3 coord, uint block_index) {
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ComputeEndpoints(endpoints[i][0], endpoints[i][1], color_endpoint_mode[i]);
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}
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for (uint i = 0; i < 16; i++) {
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texel_weight_data[i] = local_buff[i];
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}
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for (uint i = 0; i < 8; i++) {
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#define REVERSE_BYTE(b) ((b * 0x0802U & 0x22110U) | (b * 0x8020U & 0x88440U)) * 0x10101U >> 16
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uint a = REVERSE_BYTE(texel_weight_data[i]);
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uint b = REVERSE_BYTE(texel_weight_data[15 - i]);
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#undef REVERSE_BYTE
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texel_weight_data[i] = uint(bitfieldExtract(b, 0, 8));
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texel_weight_data[15 - i] = uint(bitfieldExtract(a, 0, 8));
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}
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texel_weight_data = local_buff;
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texel_weight_data = bitfieldReverse(texel_weight_data).wzyx;
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uint clear_byte_start =
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(GetPackedBitSize(params.size, params.dual_plane, params.max_weight) >> 3) + 1;
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texel_weight_data[clear_byte_start - 1] =
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texel_weight_data[clear_byte_start - 1] &
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uint byte_insert = ExtractBits(texel_weight_data, int(clear_byte_start - 1) * 8, 8) &
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uint(
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((1 << (GetPackedBitSize(params.size, params.dual_plane, params.max_weight) % 8)) - 1));
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for (uint i = 0; i < 16 - clear_byte_start; i++) {
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texel_weight_data[clear_byte_start + i] = 0U;
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uint vec_index = (clear_byte_start - 1) >> 2;
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texel_weight_data[vec_index] =
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bitfieldInsert(texel_weight_data[vec_index], byte_insert, int((clear_byte_start - 1) % 4) * 8, 8);
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for (uint i = clear_byte_start; i < 16; ++i) {
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uint idx = i >> 2;
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texel_weight_data[idx] = bitfieldInsert(texel_weight_data[idx], 0, int(i % 4) * 8, 8);
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}
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texel_flag = true; // use texel "vector" and bit stream in integer decoding
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DecodeIntegerSequence(params.max_weight, GetNumWeightValues(params.size, params.dual_plane));
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@ -1302,13 +1271,8 @@ void main() {
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if (any(greaterThanEqual(coord, imageSize(dest_image)))) {
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return;
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}
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uint block_index =
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pos.z * gl_WorkGroupSize.x * gl_WorkGroupSize.y + pos.y * gl_WorkGroupSize.x + pos.x;
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current_index = 0;
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bitsread = 0;
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for (int i = 0; i < 16; i++) {
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local_buff[i] = ReadTexel(offset + i);
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}
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DecompressBlock(coord, block_index);
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local_buff = astc_data[offset / 16];
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DecompressBlock(coord);
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}
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