91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
/*
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* Copyright (C) 2018-2021 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#include "shared/source/helpers/ptr_math.h"
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#include <array>
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namespace NEO {
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bool isCompatibleWithLayoutForImages(const std::array<uint16_t, 3> &localWorkgroupSize, const std::array<uint8_t, 3> &dimensionsOrder, uint16_t simd) {
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uint8_t xMask = simd == 8u ? 0b1 : 0b11;
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uint8_t yMask = 0b11;
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return dimensionsOrder.at(0) == 0 &&
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dimensionsOrder.at(1) == 1 &&
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(localWorkgroupSize.at(0) & xMask) == 0 &&
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(localWorkgroupSize.at(1) & yMask) == 0 &&
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localWorkgroupSize.at(2) == 1u;
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}
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inline void generateLocalIDsWithLayoutForImages(void *b, const std::array<uint16_t, 3> &localWorkgroupSize, uint16_t simd) {
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uint8_t rowWidth = simd == 32u ? 32u : 16u;
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uint8_t xDelta = simd == 8u ? 2u : 4u; // difference between corresponding values in consecutive X rows
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uint8_t yDelta = (simd == 8u || localWorkgroupSize.at(1) == 4u) ? 4u : rowWidth / xDelta; // difference between corresponding values in consecutive Y rows
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auto buffer = reinterpret_cast<uint16_t *>(b);
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uint16_t offset = 0u;
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auto numGrfs = (localWorkgroupSize.at(0) * localWorkgroupSize.at(1) * localWorkgroupSize.at(2) + (simd - 1)) / simd;
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uint8_t xMask = simd == 8u ? 0b1 : 0b11;
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uint16_t x = 0u;
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uint16_t y = 0u;
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for (auto grfId = 0; grfId < numGrfs; grfId++) {
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auto rowX = buffer + offset;
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auto rowY = buffer + offset + rowWidth;
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auto rowZ = buffer + offset + 2 * rowWidth;
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uint16_t extraX = 0u;
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uint16_t extraY = 0u;
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for (uint8_t i = 0u; i < simd; i++) {
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if (i > 0) {
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extraX++;
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if (extraX == xDelta) {
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extraX = 0u;
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}
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if ((i & xMask) == 0) {
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extraY++;
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if (y + extraY == localWorkgroupSize.at(1)) {
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extraY = 0;
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x += xDelta;
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}
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}
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}
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if (x == localWorkgroupSize.at(0)) {
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x = 0u;
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y += yDelta;
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if (y >= localWorkgroupSize.at(1)) {
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y = 0u;
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}
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}
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rowX[i] = x + extraX;
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rowY[i] = y + extraY;
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rowZ[i] = 0u;
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}
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x += xDelta;
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offset += 3 * rowWidth;
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}
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}
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void generateLocalIDsForSimdOne(void *b, const std::array<uint16_t, 3> &localWorkgroupSize,
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const std::array<uint8_t, 3> &dimensionsOrder, uint32_t grfSize) {
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uint32_t xDimNum = dimensionsOrder[0];
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uint32_t yDimNum = dimensionsOrder[1];
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uint32_t zDimNum = dimensionsOrder[2];
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for (int i = 0; i < localWorkgroupSize[zDimNum]; i++) {
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for (int j = 0; j < localWorkgroupSize[yDimNum]; j++) {
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for (int k = 0; k < localWorkgroupSize[xDimNum]; k++) {
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static_cast<uint16_t *>(b)[0] = k;
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static_cast<uint16_t *>(b)[1] = j;
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static_cast<uint16_t *>(b)[2] = i;
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b = ptrOffset(b, grfSize);
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}
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}
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}
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}
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} // namespace NEO
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