flattening
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ac09cc3504
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27c8bb9615
@ -140,8 +140,6 @@ int result_index = 0;
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EncodingData texel_vector[144];
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EncodingData texel_vector[144];
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int texel_vector_index = 0;
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int texel_vector_index = 0;
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uint unquantized_texel_weights[2][144];
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// Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)]
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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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// 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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uint Replicate(uint val, uint num_bits, uint to_bit) {
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@ -879,58 +877,60 @@ uint UnquantizeTexelWeight(EncodingData val) {
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return result;
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return result;
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}
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}
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void UnquantizeTexelWeights(bool dual_plane, uvec2 size) {
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void UnquantizeTexelWeights(bool is_dual_plane, uvec2 size, out uint unquantized_texel_weights[2 * 144]) {
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uint weight_idx = 0;
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uint unquantized[2][144];
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uint area = size.x * size.y;
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for (uint itr = 0; itr < texel_vector_index; itr++) {
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unquantized[0][weight_idx] = UnquantizeTexelWeight(texel_vector[itr]);
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if (dual_plane) {
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++itr;
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unquantized[1][weight_idx] = UnquantizeTexelWeight(texel_vector[itr]);
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if (itr == texel_vector_index) {
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break;
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}
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}
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if (++weight_idx >= (area))
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break;
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}
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const uint Ds = uint((block_dims.x * 0.5f + 1024) / (block_dims.x - 1));
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const uint Ds = uint((block_dims.x * 0.5f + 1024) / (block_dims.x - 1));
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const uint Dt = uint((block_dims.y * 0.5f + 1024) / (block_dims.y - 1));
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const uint Dt = uint((block_dims.y * 0.5f + 1024) / (block_dims.y - 1));
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const uint k_plane_scale = dual_plane ? 2 : 1;
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const uint num_planes = is_dual_plane ? 2 : 1;
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for (uint plane = 0; plane < k_plane_scale; plane++) {
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const uint area = size.x * size.y;
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const uint loop_count = min(result_index, area * num_planes);
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uint unquantized[2 * 144];
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for (uint itr = 0; itr < loop_count; ++itr) {
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unquantized[itr] = UnquantizeTexelWeight(texel_vector[itr]);
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}
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for (uint plane = 0; plane < num_planes; ++plane) {
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for (uint t = 0; t < block_dims.y; t++) {
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for (uint t = 0; t < block_dims.y; t++) {
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for (uint s = 0; s < block_dims.x; s++) {
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for (uint s = 0; s < block_dims.x; s++) {
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uint cs = Ds * s;
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const uint cs = Ds * s;
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uint ct = Dt * t;
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const uint ct = Dt * t;
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uint gs = (cs * (size.x - 1) + 32) >> 6;
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const uint gs = (cs * (size.x - 1) + 32) >> 6;
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uint gt = (ct * (size.y - 1) + 32) >> 6;
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const uint gt = (ct * (size.y - 1) + 32) >> 6;
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uint js = gs >> 4;
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const uint js = gs >> 4;
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uint fs = gs & 0xF;
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const uint fs = gs & 0xF;
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uint jt = gt >> 4;
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const uint jt = gt >> 4;
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uint ft = gt & 0x0F;
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const uint ft = gt & 0x0F;
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uint w11 = (fs * ft + 8) >> 4;
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const uint w11 = (fs * ft + 8) >> 4;
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uint w10 = ft - w11;
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const uint w10 = ft - w11;
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uint w01 = fs - w11;
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const uint w01 = fs - w11;
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uint w00 = 16 - fs - ft + w11;
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const uint w00 = 16 - fs - ft + w11;
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uvec4 w = uvec4(w00, w01, w10, w11);
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const uvec4 w = uvec4(w00, w01, w10, w11);
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uint v0 = jt * size.x + js;
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const uint v0 = jt * size.x + js;
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uvec4 p = uvec4(0);
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uvec4 p = uvec4(0);
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#define VectorIndicesFromBase(offset_base) \
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const uint offset = is_dual_plane ? 2 * offset_base + plane : offset_base; \
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if (v0 < area) {
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if (v0 < area) {
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p.x = unquantized[plane][v0];
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const uint offset_base = v0;
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VectorIndicesFromBase(offset_base);
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p.x = unquantized[offset];
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}
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}
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if ((v0 + 1) < (area)) {
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if ((v0 + 1) < (area)) {
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p.y = unquantized[plane][v0 + 1];
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const uint offset_base = v0 + 1;
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VectorIndicesFromBase(offset_base);
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p.y = unquantized[offset];
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}
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}
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if ((v0 + size.x) < (area)) {
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if ((v0 + size.x) < (area)) {
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p.z = unquantized[plane][(v0 + size.x)];
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const uint offset_base = v0 + size.x;
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VectorIndicesFromBase(offset_base);
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p.z = unquantized[offset];
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}
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}
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if ((v0 + size.x + 1) < (area)) {
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if ((v0 + size.x + 1) < (area)) {
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p.w = unquantized[plane][(v0 + size.x + 1)];
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const uint offset_base = v0 + size.x + 1;
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VectorIndicesFromBase(offset_base);
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p.w = unquantized[offset];
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}
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}
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unquantized_texel_weights[plane][t * block_dims.x + s] = (uint(dot(p, w)) + 8) >> 4;
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unquantized_texel_weights[plane * 144 + t * block_dims.x + s] = (uint(dot(p, w)) + 8) >> 4;
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}
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}
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}
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}
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}
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}
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@ -1208,7 +1208,8 @@ void DecompressBlock(ivec3 coord) {
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texel_flag = true; // use texel "vector" and bit stream in integer decoding
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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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DecodeIntegerSequence(params.max_weight, GetNumWeightValues(params.size, params.dual_plane));
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UnquantizeTexelWeights(params.dual_plane, params.size);
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uint unquantized_texel_weights[2 * 144];
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UnquantizeTexelWeights(params.dual_plane, params.size, unquantized_texel_weights);
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for (uint j = 0; j < block_dims.y; j++) {
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for (uint j = 0; j < block_dims.y; j++) {
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for (uint i = 0; i < block_dims.x; i++) {
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for (uint i = 0; i < block_dims.x; i++) {
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@ -1220,10 +1221,10 @@ void DecompressBlock(ivec3 coord) {
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const uvec4 C0 = ReplicateByteTo16(endpoints[local_partition][0]);
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const uvec4 C0 = ReplicateByteTo16(endpoints[local_partition][0]);
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const uvec4 C1 = ReplicateByteTo16(endpoints[local_partition][1]);
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const uvec4 C1 = ReplicateByteTo16(endpoints[local_partition][1]);
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const uint weight_offset = (j * block_dims.x + i);
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const uint weight_offset = (j * block_dims.x + i);
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const uint primary_weight = unquantized_texel_weights[weight_offset][0];
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const uint primary_weight = unquantized_texel_weights[weight_offset];
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uvec4 weight_vec = uvec4(primary_weight);
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uvec4 weight_vec = uvec4(primary_weight);
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if (params.dual_plane) {
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if (params.dual_plane) {
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const uint secondary_weight = unquantized_texel_weights[weight_offset][1];
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const uint secondary_weight = unquantized_texel_weights[weight_offset + 144];
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for (uint c = 0; c < 4; c++) {
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for (uint c = 0; c < 4; c++) {
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const bool is_secondary = ((plane_index + 1u) & 3u) == c;
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const bool is_secondary = ((plane_index + 1u) & 3u) == c;
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weight_vec[c] = is_secondary ? secondary_weight : primary_weight;
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weight_vec[c] = is_secondary ? secondary_weight : primary_weight;
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