From b2862e4772489f0ade41f79765d33ec4fc33712c Mon Sep 17 00:00:00 2001 From: ameerj <52414509+ameerj@users.noreply.github.com> Date: Thu, 8 Jul 2021 00:31:35 -0400 Subject: astc_decoder: Make use of uvec4 for payload data --- src/video_core/host_shaders/astc_decoder.comp | 122 +++++++++----------------- 1 file changed, 43 insertions(+), 79 deletions(-) diff --git a/src/video_core/host_shaders/astc_decoder.comp b/src/video_core/host_shaders/astc_decoder.comp index 8d8b64fbd..392f09c68 100644 --- a/src/video_core/host_shaders/astc_decoder.comp +++ b/src/video_core/host_shaders/astc_decoder.comp @@ -59,7 +59,7 @@ layout(binding = BINDING_SWIZZLE_BUFFER, std430) readonly buffer SwizzleTable { }; layout(binding = BINDING_INPUT_BUFFER, std430) readonly buffer InputBufferU32 { - uint astc_data[]; + uvec4 astc_data[]; }; layout(binding = BINDING_OUTPUT_IMAGE, rgba8) uniform writeonly image2DArray dest_image; @@ -141,32 +141,28 @@ const uint REPLICATE_7_BIT_TO_8_TABLE[128] = // Input ASTC texture globals uint current_index = 0; int bitsread = 0; -uint total_bitsread = 0; -uint local_buff[16]; +int total_bitsread = 0; +uvec4 local_buff; // Color data globals -uint color_endpoint_data[16]; +uvec4 color_endpoint_data; int color_bitsread = 0; -uint total_color_bitsread = 0; -int color_index = 0; // Four values, two endpoints, four maximum paritions uint color_values[32]; int colvals_index = 0; // Weight data globals -uint texel_weight_data[16]; +uvec4 texel_weight_data; int texel_bitsread = 0; -uint total_texel_bitsread = 0; -int texel_index = 0; bool texel_flag = false; // Global "vectors" to be pushed into when decoding -EncodingData result_vector[100]; +EncodingData result_vector[144]; int result_index = 0; -EncodingData texel_vector[100]; +EncodingData texel_vector[144]; int texel_vector_index = 0; uint unquantized_texel_weights[2][144]; @@ -176,11 +172,6 @@ uint SwizzleOffset(uvec2 pos) { return swizzle_table[pos.y * 64 + pos.x]; } -uint ReadTexel(uint offset) { - // extract the 8-bit value from the 32-bit packed data. - return bitfieldExtract(astc_data[offset / 4], int((offset * 8) & 24), 8); -} - // Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)] // is the same as [(num_bits - 1):0] and repeats all the way down. uint Replicate(uint val, uint num_bits, uint to_bit) { @@ -356,54 +347,37 @@ uint Select2DPartition(uint seed, uint x, uint y, uint partition_count, bool sma } } -uint ReadBit() { - if (current_index >= local_buff.length()) { +uint ExtractBits(uvec4 payload, int offset, int bits) { + if (bits <= 0) { return 0; } - uint bit = bitfieldExtract(local_buff[current_index], bitsread, 1); - ++bitsread; - ++total_bitsread; - if (bitsread == 8) { - ++current_index; - bitsread = 0; + int last_offset = offset + bits - 1; + int shifted_offset = offset >> 5; + if ((last_offset >> 5) == shifted_offset) { + return bitfieldExtract(payload[shifted_offset], offset & 31, bits); } - return bit; + int first_bits = 32 - (offset & 31); + int result_first = int(bitfieldExtract(payload[shifted_offset], offset & 31, first_bits)); + int result_second = int(bitfieldExtract(payload[shifted_offset + 1], 0, bits - first_bits)); + return result_first | (result_second << first_bits); } uint StreamBits(uint num_bits) { - uint ret = 0; - for (uint i = 0; i < num_bits; i++) { - ret |= ((ReadBit() & 1) << i); - } + int int_bits = int(num_bits); + uint ret = ExtractBits(local_buff, total_bitsread, int_bits); + total_bitsread += int_bits; return ret; } -uint ReadColorBit() { - uint bit = 0; - if (texel_flag) { - bit = bitfieldExtract(texel_weight_data[texel_index], texel_bitsread, 1); - ++texel_bitsread; - ++total_texel_bitsread; - if (texel_bitsread == 8) { - ++texel_index; - texel_bitsread = 0; - } - } else { - bit = bitfieldExtract(color_endpoint_data[color_index], color_bitsread, 1); - ++color_bitsread; - ++total_color_bitsread; - if (color_bitsread == 8) { - ++color_index; - color_bitsread = 0; - } - } - return bit; -} - uint StreamColorBits(uint num_bits) { uint ret = 0; - for (uint i = 0; i < num_bits; i++) { - ret |= ((ReadColorBit() & 1) << i); + int int_bits = int(num_bits); + if (texel_flag) { + ret = ExtractBits(texel_weight_data, texel_bitsread, int_bits); + texel_bitsread += int_bits; + } else { + ret = ExtractBits(color_endpoint_data, color_bitsread, int_bits); + color_bitsread += int_bits; } return ret; } @@ -1006,7 +980,7 @@ int FindLayout(uint mode) { return 5; } -TexelWeightParams DecodeBlockInfo(uint block_index) { +TexelWeightParams DecodeBlockInfo() { TexelWeightParams params = TexelWeightParams(uvec2(0), 0, false, false, false, false); uint mode = StreamBits(11); if ((mode & 0x1ff) == 0x1fc) { @@ -1122,8 +1096,8 @@ void FillVoidExtentLDR(ivec3 coord) { } } -void DecompressBlock(ivec3 coord, uint block_index) { - TexelWeightParams params = DecodeBlockInfo(block_index); +void DecompressBlock(ivec3 coord) { + TexelWeightParams params = DecodeBlockInfo(); if (params.error_state) { FillError(coord); return; @@ -1190,7 +1164,7 @@ void DecompressBlock(ivec3 coord, uint block_index) { // Read color data... uint color_data_bits = remaining_bits; while (remaining_bits > 0) { - int nb = int(min(remaining_bits, 8U)); + int nb = int(min(remaining_bits, 32U)); uint b = StreamBits(nb); color_endpoint_data[ced_pointer] = uint(bitfieldExtract(b, 0, nb)); ++ced_pointer; @@ -1232,25 +1206,20 @@ void DecompressBlock(ivec3 coord, uint block_index) { ComputeEndpoints(endpoints[i][0], endpoints[i][1], color_endpoint_mode[i]); } - for (uint i = 0; i < 16; i++) { - texel_weight_data[i] = local_buff[i]; - } - for (uint i = 0; i < 8; i++) { -#define REVERSE_BYTE(b) ((b * 0x0802U & 0x22110U) | (b * 0x8020U & 0x88440U)) * 0x10101U >> 16 - uint a = REVERSE_BYTE(texel_weight_data[i]); - uint b = REVERSE_BYTE(texel_weight_data[15 - i]); -#undef REVERSE_BYTE - texel_weight_data[i] = uint(bitfieldExtract(b, 0, 8)); - texel_weight_data[15 - i] = uint(bitfieldExtract(a, 0, 8)); - } + texel_weight_data = local_buff; + texel_weight_data = bitfieldReverse(texel_weight_data).wzyx; uint clear_byte_start = (GetPackedBitSize(params.size, params.dual_plane, params.max_weight) >> 3) + 1; - texel_weight_data[clear_byte_start - 1] = - texel_weight_data[clear_byte_start - 1] & + + uint byte_insert = ExtractBits(texel_weight_data, int(clear_byte_start - 1) * 8, 8) & uint( ((1 << (GetPackedBitSize(params.size, params.dual_plane, params.max_weight) % 8)) - 1)); - for (uint i = 0; i < 16 - clear_byte_start; i++) { - texel_weight_data[clear_byte_start + i] = 0U; + uint vec_index = (clear_byte_start - 1) >> 2; + texel_weight_data[vec_index] = + bitfieldInsert(texel_weight_data[vec_index], byte_insert, int((clear_byte_start - 1) % 4) * 8, 8); + for (uint i = clear_byte_start; i < 16; ++i) { + uint idx = i >> 2; + texel_weight_data[idx] = bitfieldInsert(texel_weight_data[idx], 0, int(i % 4) * 8, 8); } texel_flag = true; // use texel "vector" and bit stream in integer decoding DecodeIntegerSequence(params.max_weight, GetNumWeightValues(params.size, params.dual_plane)); @@ -1302,13 +1271,8 @@ void main() { if (any(greaterThanEqual(coord, imageSize(dest_image)))) { return; } - uint block_index = - pos.z * gl_WorkGroupSize.x * gl_WorkGroupSize.y + pos.y * gl_WorkGroupSize.x + pos.x; - current_index = 0; bitsread = 0; - for (int i = 0; i < 16; i++) { - local_buff[i] = ReadTexel(offset + i); - } - DecompressBlock(coord, block_index); + local_buff = astc_data[offset / 16]; + DecompressBlock(coord); } -- cgit v1.2.3