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@ -94,6 +94,8 @@ uint result_index = 0;
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uint result_vector_max_index;
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bool result_limit_reached = false;
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uvec4 endpoints[2][4];
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// EncodingData helpers
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uint Encoding(EncodingData val) {
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return bitfieldExtract(val.data, 0, 8);
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@ -673,7 +675,7 @@ ivec4 BlueContract(int a, int r, int g, int b) {
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return ivec4(a, (r + b) >> 1, (g + b) >> 1, b);
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}
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void ComputeEndpoints(out uvec4 ep1, out uvec4 ep2, uint color_endpoint_mode,
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void ComputeEndpoints(uint ep_index, uint color_endpoint_mode,
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inout uint colvals_index) {
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#define READ_UINT_VALUES(N) \
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uint v[N]; \
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@ -692,22 +694,22 @@ void ComputeEndpoints(out uvec4 ep1, out uvec4 ep2, uint color_endpoint_mode,
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switch (color_endpoint_mode) {
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case 0: {
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READ_UINT_VALUES(2)
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ep1 = uvec4(0xFF, v[0], v[0], v[0]);
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ep2 = uvec4(0xFF, v[1], v[1], v[1]);
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endpoints[0][ep_index] = uvec4(0xFF, v[0], v[0], v[0]);
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endpoints[1][ep_index] = uvec4(0xFF, v[1], v[1], v[1]);
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break;
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}
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case 1: {
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READ_UINT_VALUES(2)
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const uint L0 = (v[0] >> 2) | (v[1] & 0xC0);
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const uint L1 = min(L0 + (v[1] & 0x3F), 0xFFU);
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ep1 = uvec4(0xFF, L0, L0, L0);
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ep2 = uvec4(0xFF, L1, L1, L1);
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endpoints[0][ep_index] = uvec4(0xFF, L0, L0, L0);
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endpoints[1][ep_index] = uvec4(0xFF, L1, L1, L1);
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break;
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}
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case 4: {
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READ_UINT_VALUES(4)
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ep1 = uvec4(v[2], v[0], v[0], v[0]);
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ep2 = uvec4(v[3], v[1], v[1], v[1]);
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endpoints[0][ep_index] = uvec4(v[2], v[0], v[0], v[0]);
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endpoints[1][ep_index] = uvec4(v[3], v[1], v[1], v[1]);
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break;
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}
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case 5: {
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@ -718,24 +720,24 @@ void ComputeEndpoints(out uvec4 ep1, out uvec4 ep2, uint color_endpoint_mode,
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transferred = BitTransferSigned(v[3], v[2]);
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v[3] = transferred.x;
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v[2] = transferred.y;
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ep1 = ClampByte(ivec4(v[2], v[0], v[0], v[0]));
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ep2 = ClampByte(ivec4(v[2] + v[3], v[0] + v[1], v[0] + v[1], v[0] + v[1]));
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endpoints[0][ep_index] = ClampByte(ivec4(v[2], v[0], v[0], v[0]));
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endpoints[1][ep_index] = ClampByte(ivec4(v[2] + v[3], v[0] + v[1], v[0] + v[1], v[0] + v[1]));
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break;
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}
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case 6: {
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READ_UINT_VALUES(4)
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ep1 = uvec4(0xFF, (v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8);
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ep2 = uvec4(0xFF, v[0], v[1], v[2]);
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endpoints[0][ep_index] = uvec4(0xFF, (v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8);
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endpoints[1][ep_index] = uvec4(0xFF, v[0], v[1], v[2]);
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break;
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}
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case 8: {
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READ_UINT_VALUES(6)
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if ((v[1] + v[3] + v[5]) >= (v[0] + v[2] + v[4])) {
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ep1 = uvec4(0xFF, v[0], v[2], v[4]);
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ep2 = uvec4(0xFF, v[1], v[3], v[5]);
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endpoints[0][ep_index] = uvec4(0xFF, v[0], v[2], v[4]);
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endpoints[1][ep_index] = uvec4(0xFF, v[1], v[3], v[5]);
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} else {
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ep1 = uvec4(BlueContract(0xFF, int(v[1]), int(v[3]), int(v[5])));
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ep2 = uvec4(BlueContract(0xFF, int(v[0]), int(v[2]), int(v[4])));
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endpoints[0][ep_index] = uvec4(BlueContract(0xFF, int(v[1]), int(v[3]), int(v[5])));
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endpoints[1][ep_index] = uvec4(BlueContract(0xFF, int(v[0]), int(v[2]), int(v[4])));
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}
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break;
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}
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@ -751,28 +753,28 @@ void ComputeEndpoints(out uvec4 ep1, out uvec4 ep2, uint color_endpoint_mode,
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v[5] = transferred.x;
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v[4] = transferred.y;
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if ((v[1] + v[3] + v[5]) >= 0) {
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ep1 = ClampByte(ivec4(0xFF, v[0], v[2], v[4]));
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ep2 = ClampByte(ivec4(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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endpoints[0][ep_index] = ClampByte(ivec4(0xFF, v[0], v[2], v[4]));
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endpoints[1][ep_index] = ClampByte(ivec4(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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} else {
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ep1 = ClampByte(BlueContract(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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ep2 = ClampByte(BlueContract(0xFF, v[0], v[2], v[4]));
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endpoints[0][ep_index] = ClampByte(BlueContract(0xFF, v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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endpoints[1][ep_index] = ClampByte(BlueContract(0xFF, v[0], v[2], v[4]));
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}
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break;
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}
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case 10: {
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READ_UINT_VALUES(6)
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ep1 = uvec4(v[4], (v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8);
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ep2 = uvec4(v[5], v[0], v[1], v[2]);
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endpoints[0][ep_index] = uvec4(v[4], (v[0] * v[3]) >> 8, (v[1] * v[3]) >> 8, (v[2] * v[3]) >> 8);
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endpoints[1][ep_index] = uvec4(v[5], v[0], v[1], v[2]);
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break;
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}
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case 12: {
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READ_UINT_VALUES(8)
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if ((v[1] + v[3] + v[5]) >= (v[0] + v[2] + v[4])) {
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ep1 = uvec4(v[6], v[0], v[2], v[4]);
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ep2 = uvec4(v[7], v[1], v[3], v[5]);
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endpoints[0][ep_index] = uvec4(v[6], v[0], v[2], v[4]);
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endpoints[1][ep_index] = uvec4(v[7], v[1], v[3], v[5]);
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} else {
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ep1 = uvec4(BlueContract(int(v[7]), int(v[1]), int(v[3]), int(v[5])));
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ep2 = uvec4(BlueContract(int(v[6]), int(v[0]), int(v[2]), int(v[4])));
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endpoints[0][ep_index] = uvec4(BlueContract(int(v[7]), int(v[1]), int(v[3]), int(v[5])));
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endpoints[1][ep_index] = uvec4(BlueContract(int(v[6]), int(v[0]), int(v[2]), int(v[4])));
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}
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break;
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}
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@ -794,18 +796,18 @@ void ComputeEndpoints(out uvec4 ep1, out uvec4 ep2, uint color_endpoint_mode,
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v[6] = transferred.y;
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if ((v[1] + v[3] + v[5]) >= 0) {
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ep1 = ClampByte(ivec4(v[6], v[0], v[2], v[4]));
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ep2 = ClampByte(ivec4(v[7] + v[6], v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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endpoints[0][ep_index] = ClampByte(ivec4(v[6], v[0], v[2], v[4]));
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endpoints[1][ep_index] = ClampByte(ivec4(v[7] + v[6], v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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} else {
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ep1 = ClampByte(BlueContract(v[6] + v[7], v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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ep2 = ClampByte(BlueContract(v[6], v[0], v[2], v[4]));
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endpoints[0][ep_index] = ClampByte(BlueContract(v[6] + v[7], v[0] + v[1], v[2] + v[3], v[4] + v[5]));
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endpoints[1][ep_index] = ClampByte(BlueContract(v[6], v[0], v[2], v[4]));
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}
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break;
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}
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default: {
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// HDR mode, or more likely a bug computing the color_endpoint_mode
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ep1 = uvec4(0xFF, 0xFF, 0, 0);
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ep2 = uvec4(0xFF, 0xFF, 0, 0);
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endpoints[0][ep_index] = uvec4(0xFF, 0xFF, 0, 0);
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endpoints[1][ep_index] = uvec4(0xFF, 0xFF, 0, 0);
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break;
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}
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}
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@ -1198,10 +1200,6 @@ void DecompressBlock(ivec3 coord) {
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color_endpoint_mode[i] = cem;
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}
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}
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uvec4 endpoints0[4];
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uvec4 endpoints1[4];
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{
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// This decode phase should at most push 32 elements into the vector
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result_vector_max_index = 32;
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@ -1209,9 +1207,7 @@ void DecompressBlock(ivec3 coord) {
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uint colvals_index = 0;
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DecodeColorValues(color_endpoint_mode, num_partitions, color_data_bits);
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for (uint i = 0; i < num_partitions; i++) {
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ComputeEndpoints(endpoints0[i], endpoints1[i], color_endpoint_mode[i],
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colvals_index);
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}
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ComputeEndpoints(i, color_endpoint_mode[i], colvals_index);
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}
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color_endpoint_data = local_buff;
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color_endpoint_data = bitfieldReverse(color_endpoint_data).wzyx;
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@ -1247,8 +1243,8 @@ void DecompressBlock(ivec3 coord) {
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local_partition = Select2DPartition(partition_index, i, j, num_partitions,
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(block_dims.y * block_dims.x) < 32);
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}
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const uvec4 C0 = ReplicateByteTo16(endpoints0[local_partition]);
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const uvec4 C1 = ReplicateByteTo16(endpoints1[local_partition]);
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const uvec4 C0 = ReplicateByteTo16(endpoints[0][local_partition]);
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const uvec4 C1 = ReplicateByteTo16(endpoints[1][local_partition]);
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const uint weight_offset = (j * block_dims.x + i);
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const uint array_index = weight_offset / 4;
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const uint vector_index = bfe(weight_offset, 0, 2);
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