diff options
author | Jeroen Bakker <jeroen@blender.org> | 2021-03-08 15:41:52 +0300 |
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committer | Jeroen Bakker <jeroen@blender.org> | 2021-03-08 15:41:52 +0300 |
commit | 1775ea74c152ba7cf27a8bc1f071b40992c89013 (patch) | |
tree | 310fbe4e107734a16b3164adb1a65bd918935855 /source/blender/compositor/operations/COM_GlareStreaksOperation.cc | |
parent | b9cd2f4531ca670c196b0b14b1359d0f375103c2 (diff) |
Cleanup: Change extension .cpp to .cc
Diffstat (limited to 'source/blender/compositor/operations/COM_GlareStreaksOperation.cc')
-rw-r--r-- | source/blender/compositor/operations/COM_GlareStreaksOperation.cc | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GlareStreaksOperation.cc b/source/blender/compositor/operations/COM_GlareStreaksOperation.cc new file mode 100644 index 00000000000..4fccb62e3df --- /dev/null +++ b/source/blender/compositor/operations/COM_GlareStreaksOperation.cc @@ -0,0 +1,102 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright 2011, Blender Foundation. + */ + +#include "COM_GlareStreaksOperation.h" +#include "BLI_math.h" + +void GlareStreaksOperation::generateGlare(float *data, + MemoryBuffer *inputTile, + NodeGlare *settings) +{ + int x, y, n; + unsigned int nump = 0; + float c1[4], c2[4], c3[4], c4[4]; + float a, ang = DEG2RADF(360.0f) / (float)settings->streaks; + + int size = inputTile->getWidth() * inputTile->getHeight(); + int size4 = size * 4; + + bool breaked = false; + + MemoryBuffer *tsrc = inputTile->duplicate(); + MemoryBuffer *tdst = new MemoryBuffer(COM_DT_COLOR, inputTile->getRect()); + tdst->clear(); + memset(data, 0, size4 * sizeof(float)); + + for (a = 0.0f; a < DEG2RADF(360.0f) && (!breaked); a += ang) { + const float an = a + settings->angle_ofs; + const float vx = cos((double)an), vy = sin((double)an); + for (n = 0; n < settings->iter && (!breaked); n++) { + const float p4 = pow(4.0, (double)n); + const float vxp = vx * p4, vyp = vy * p4; + const float wt = pow((double)settings->fade, (double)p4); + const float cmo = 1.0f - + (float)pow((double)settings->colmod, + (double)n + + 1); // colormodulation amount relative to current pass + float *tdstcol = tdst->getBuffer(); + for (y = 0; y < tsrc->getHeight() && (!breaked); y++) { + for (x = 0; x < tsrc->getWidth(); x++, tdstcol += 4) { + // first pass no offset, always same for every pass, exact copy, + // otherwise results in uneven brightness, only need once + if (n == 0) { + tsrc->read(c1, x, y); + } + else { + c1[0] = c1[1] = c1[2] = 0; + } + tsrc->readBilinear(c2, x + vxp, y + vyp); + tsrc->readBilinear(c3, x + vxp * 2.0f, y + vyp * 2.0f); + tsrc->readBilinear(c4, x + vxp * 3.0f, y + vyp * 3.0f); + // modulate color to look vaguely similar to a color spectrum + c2[1] *= cmo; + c2[2] *= cmo; + + c3[0] *= cmo; + c3[1] *= cmo; + + c4[0] *= cmo; + c4[2] *= cmo; + + tdstcol[0] = 0.5f * (tdstcol[0] + c1[0] + wt * (c2[0] + wt * (c3[0] + wt * c4[0]))); + tdstcol[1] = 0.5f * (tdstcol[1] + c1[1] + wt * (c2[1] + wt * (c3[1] + wt * c4[1]))); + tdstcol[2] = 0.5f * (tdstcol[2] + c1[2] + wt * (c2[2] + wt * (c3[2] + wt * c4[2]))); + tdstcol[3] = 1.0f; + } + if (isBraked()) { + breaked = true; + } + } + memcpy(tsrc->getBuffer(), tdst->getBuffer(), sizeof(float) * size4); + } + + float *sourcebuffer = tsrc->getBuffer(); + float factor = 1.0f / (float)(6 - settings->iter); + for (int i = 0; i < size4; i += 4) { + madd_v3_v3fl(&data[i], &sourcebuffer[i], factor); + data[i + 3] = 1.0f; + } + + tdst->clear(); + memcpy(tsrc->getBuffer(), inputTile->getBuffer(), sizeof(float) * size4); + nump++; + } + + delete tsrc; + delete tdst; +} |