Cross Reference: /external/skia/src/shaders/SkPerlinNoiseShader.cpp

Lines Matching defs:noise
222                 // Copy noise data
223                 uint16_t noise[4][kBlockSize][2];
227                             noise[channel][i][j] = fNoise[channel][i][j];
231                 // Do permutations on noise data
235                             fNoise[channel][i][j] = noise[channel][fLatticeSelector[i]][j];
244             // Compute gradients from permutated noise data
251                     // Put the normalized gradient back into the noise data
315      *  About the noise types : the difference between the first 2 is just minor tweaks to the
317      *  noise is generated in the [1, -1] range, the output is brought back in the [0, 1] range by
319      *  kFractalNoise_Type : noise * 0.5 + 0.5
320      *  kTurbulence_Type   : abs(noise)
323      *  http://mrl.nyu.edu/~perlin/noise/. It is quite distinct from the other two, and the noise is
324      *  a 2D slice of a 3D noise texture. Minor changes to the Z coordinate will result in minor
325      *  changes to the noise, making it suitable for animated noise.
389 // limitValue is the maximum perlin noise array index value allowed
390 // newValue is the current noise dimension (either width or height)
392     // If the noise value would bring us out of bounds of the current noise array while we are
393     // stiching noise tiles together, wrap the noise around the current dimension of the noise to
534         SkScalar noise = noise2D(channel, stitchData, noiseVector);
536                             noise : SkScalarAbs(noise);
565 // Improved Perlin Noise based on Java implementation found at http://mrl.nyu.edu/~perlin/noise/
670     // This (1,1) translation is due to WebKit's 1 based coordinates for the noise
864     // Add noise function
930     // affecting the result of the noise by making sure that we only have multiples of 1/255.
993     // Compute the noise as a linear interpolation of 'a' and 'b'
1300     // noise function
1334     fragBuilder->emitFunction(kHalf_GrSLType, "noise", SK_ARRAY_COUNT(noiseArgs), noiseArgs,
1384     const GrImprovedPerlinNoiseEffect& noise = processor.cast<GrImprovedPerlinNoiseEffect>();
1386     const SkVector& baseFrequency = noise.baseFrequency();
1389     pdman.set1f(fZUni, noise.z());
1442             // color space of the noise. Either way, this case (and the GLSL) need to convert to
1489             str->append("\"fractal noise\"");