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Differential D12367 Diff 41308 intern/cycles/kernel/svm/svm_noise.h

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intern/cycles/kernel/svm/svm_noise.h

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* v1 (0, 1) * v1 (0, 1)
* v2 (1, 0) (0, 1, 0, 1) = shuffle<0, 2, 0, 2>(shuffle<1, 1, 1, 1>(V, V + 1)) * v2 (1, 0) (0, 1, 0, 1) = shuffle<0, 2, 0, 2>(shuffle<1, 1, 1, 1>(V, V + 1))
* v3 (1, 1) ^ * v3 (1, 1) ^
* | |__________| (0, 0, 1, 1) = shuffle<0, 0, 0, 0>(V, V + 1) * | |__________| (0, 0, 1, 1) = shuffle<0, 0, 0, 0>(V, V + 1)
* | ^ * | ^
* |__________________________| * |__________________________|
* *
*/ */
ccl_device_noinline float perlin_2d(float x, float y) ccl_device_noinline_cpu float perlin_2d(float x, float y)
{ {
ssei XY; ssei XY;
ssef fxy = floorfrac(ssef(x, y, 0.0f, 0.0f), &XY); ssef fxy = floorfrac(ssef(x, y, 0.0f, 0.0f), &XY);
ssef uv = fade(fxy); ssef uv = fade(fxy);
ssei XY1 = XY + 1; ssei XY1 = XY + 1;
ssei X = shuffle<0, 0, 0, 0>(XY, XY1); ssei X = shuffle<0, 0, 0, 0>(XY, XY1);
ssei Y = shuffle<0, 2, 0, 2>(shuffle<1, 1, 1, 1>(XY, XY1)); ssei Y = shuffle<0, 2, 0, 2>(shuffle<1, 1, 1, 1>(XY, XY1));
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* *
* Point Offset from v0 * Point Offset from v0
* v4 (1, 0, 0) * v4 (1, 0, 0)
* v5 (1, 0, 1) * v5 (1, 0, 1)
* v6 (1, 1, 0) * v6 (1, 1, 0)
* v7 (1, 1, 1) * v7 (1, 1, 1)
* *
*/ */
ccl_device_noinline float perlin_3d(float x, float y, float z) ccl_device_noinline_cpu float perlin_3d(float x, float y, float z)
{ {
ssei XYZ; ssei XYZ;
ssef fxyz = floorfrac(ssef(x, y, z, 0.0f), &XYZ); ssef fxyz = floorfrac(ssef(x, y, z, 0.0f), &XYZ);
ssef uvw = fade(fxyz); ssef uvw = fade(fxyz);
ssei XYZ1 = XYZ + 1; ssei XYZ1 = XYZ + 1;
ssei Y = shuffle<1, 1, 1, 1>(XYZ, XYZ1); ssei Y = shuffle<1, 1, 1, 1>(XYZ, XYZ1);
ssei Z = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(XYZ, XYZ1)); ssei Z = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(XYZ, XYZ1));
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* *
* Point Offset from v0 * Point Offset from v0
* v12 (1, 0, 0, 1) * v12 (1, 0, 0, 1)
* v13 (1, 0, 1, 1) * v13 (1, 0, 1, 1)
* v14 (1, 1, 0, 1) * v14 (1, 1, 0, 1)
* v15 (1, 1, 1, 1) * v15 (1, 1, 1, 1)
* *
*/ */
ccl_device_noinline float perlin_4d(float x, float y, float z, float w) ccl_device_noinline_cpu float perlin_4d(float x, float y, float z, float w)
{ {
ssei XYZW; ssei XYZW;
ssef fxyzw = floorfrac(ssef(x, y, z, w), &XYZW); ssef fxyzw = floorfrac(ssef(x, y, z, w), &XYZW);
ssef uvws = fade(fxyzw); ssef uvws = fade(fxyzw);
ssei XYZW1 = XYZW + 1; ssei XYZW1 = XYZW + 1;
ssei Y = shuffle<1, 1, 1, 1>(XYZW, XYZW1); ssei Y = shuffle<1, 1, 1, 1>(XYZW, XYZW1);
ssei Z = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(XYZW, XYZW1)); ssei Z = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(XYZW, XYZW1));
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* v5 (1, 0, 1) (0, 1, 0, 1) = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(V, V + 1)) * v5 (1, 0, 1) (0, 1, 0, 1) = shuffle<0, 2, 0, 2>(shuffle<2, 2, 2, 2>(V, V + 1))
* v6 (1, 1, 0) ^ * v6 (1, 1, 0) ^
* v7 (1, 1, 1) | * v7 (1, 1, 1) |
* | |__________| (0, 0, 1, 1) = shuffle<1, 1, 1, 1>(V, V + 1) * | |__________| (0, 0, 1, 1) = shuffle<1, 1, 1, 1>(V, V + 1)
* | ^ * | ^
* |__________________________| * |__________________________|
* *
*/ */
ccl_device_noinline float perlin_3d(float x, float y, float z) ccl_device_noinline_cpu float perlin_3d(float x, float y, float z)
{ {
ssei XYZ; ssei XYZ;
ssef fxyz = floorfrac(ssef(x, y, z, 0.0f), &XYZ); ssef fxyz = floorfrac(ssef(x, y, z, 0.0f), &XYZ);
ssef uvw = fade(fxyz); ssef uvw = fade(fxyz);
ssei XYZ1 = XYZ + 1; ssei XYZ1 = XYZ + 1;
ssei X = shuffle<0>(XYZ); ssei X = shuffle<0>(XYZ);
ssei X1 = shuffle<0>(XYZ1); ssei X1 = shuffle<0>(XYZ1);
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* v10 (0, 1, 0, 1) * v10 (0, 1, 0, 1)
* v11 (0, 1, 1, 1) * v11 (0, 1, 1, 1)
* v12 (1, 0, 0, 1) * v12 (1, 0, 0, 1)
* v13 (1, 0, 1, 1) * v13 (1, 0, 1, 1)
* v14 (1, 1, 0, 1) * v14 (1, 1, 0, 1)
* v15 (1, 1, 1, 1) * v15 (1, 1, 1, 1)
* *
*/ */
ccl_device_noinline float perlin_4d(float x, float y, float z, float w) ccl_device_noinline_cpu float perlin_4d(float x, float y, float z, float w)
{ {
ssei XYZW; ssei XYZW;
ssef fxyzw = floorfrac(ssef(x, y, z, w), &XYZW); ssef fxyzw = floorfrac(ssef(x, y, z, w), &XYZW);
ssef uvws = fade(fxyzw); ssef uvws = fade(fxyzw);
ssei XYZW1 = XYZW + 1; ssei XYZW1 = XYZW + 1;
ssei X = shuffle<0>(XYZW); ssei X = shuffle<0>(XYZW);
ssei X1 = shuffle<0>(XYZW1); ssei X1 = shuffle<0>(XYZW1);
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