Blender  V3.3
COM_GlareStreaksOperation.cc
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1 /* SPDX-License-Identifier: GPL-2.0-or-later
2  * Copyright 2011 Blender Foundation. */
3 
5 
6 namespace blender::compositor {
7 
9  MemoryBuffer *input_tile,
10  NodeGlare *settings)
11 {
12  int x, y, n;
13  unsigned int nump = 0;
14  float c1[4], c2[4], c3[4], c4[4];
15  float a, ang = DEG2RADF(360.0f) / (float)settings->streaks;
16 
17  int size = input_tile->get_width() * input_tile->get_height();
18  int size4 = size * 4;
19 
20  bool breaked = false;
21 
22  MemoryBuffer tsrc(*input_tile);
23  MemoryBuffer tdst(DataType::Color, input_tile->get_rect());
24  tdst.clear();
25  memset(data, 0, size4 * sizeof(float));
26 
27  for (a = 0.0f; a < DEG2RADF(360.0f) && (!breaked); a += ang) {
28  const float an = a + settings->angle_ofs;
29  const float vx = cos((double)an), vy = sin((double)an);
30  for (n = 0; n < settings->iter && (!breaked); n++) {
31  const float p4 = pow(4.0, (double)n);
32  const float vxp = vx * p4, vyp = vy * p4;
33  const float wt = pow((double)settings->fade, (double)p4);
34 
35  /* Color-modulation amount relative to current pass. */
36  const float cmo = 1.0f - (float)pow((double)settings->colmod, (double)n + 1);
37 
38  float *tdstcol = tdst.get_buffer();
39  for (y = 0; y < tsrc.get_height() && (!breaked); y++) {
40  for (x = 0; x < tsrc.get_width(); x++, tdstcol += 4) {
41  /* First pass no offset, always same for every pass, exact copy,
42  * otherwise results in uneven brightness, only need once. */
43  if (n == 0) {
44  tsrc.read(c1, x, y);
45  }
46  else {
47  c1[0] = c1[1] = c1[2] = 0;
48  }
49  tsrc.read_bilinear(c2, x + vxp, y + vyp);
50  tsrc.read_bilinear(c3, x + vxp * 2.0f, y + vyp * 2.0f);
51  tsrc.read_bilinear(c4, x + vxp * 3.0f, y + vyp * 3.0f);
52  /* Modulate color to look vaguely similar to a color spectrum. */
53  c2[1] *= cmo;
54  c2[2] *= cmo;
55 
56  c3[0] *= cmo;
57  c3[1] *= cmo;
58 
59  c4[0] *= cmo;
60  c4[2] *= cmo;
61 
62  tdstcol[0] = 0.5f * (tdstcol[0] + c1[0] + wt * (c2[0] + wt * (c3[0] + wt * c4[0])));
63  tdstcol[1] = 0.5f * (tdstcol[1] + c1[1] + wt * (c2[1] + wt * (c3[1] + wt * c4[1])));
64  tdstcol[2] = 0.5f * (tdstcol[2] + c1[2] + wt * (c2[2] + wt * (c3[2] + wt * c4[2])));
65  tdstcol[3] = 1.0f;
66  }
67  if (is_braked()) {
68  breaked = true;
69  }
70  }
71  memcpy(tsrc.get_buffer(), tdst.get_buffer(), sizeof(float) * size4);
72  }
73 
74  float *sourcebuffer = tsrc.get_buffer();
75  float factor = 1.0f / (float)(6 - settings->iter);
76  for (int i = 0; i < size4; i += 4) {
77  madd_v3_v3fl(&data[i], &sourcebuffer[i], factor);
78  data[i + 3] = 1.0f;
79  }
80 
81  tdst.clear();
82  memcpy(tsrc.get_buffer(), input_tile->get_buffer(), sizeof(float) * size4);
83  nump++;
84  }
85 }
86 
87 } // namespace blender::compositor
typedef float(TangentPoint)[2]
#define DEG2RADF(_deg)
MINLINE void madd_v3_v3fl(float r[3], const float a[3], float f)
typedef double(DMatrix)[4][4]
_GL_VOID GLfloat value _GL_VOID_RET _GL_VOID const GLuint GLboolean *residences _GL_BOOL_RET _GL_VOID GLsizei GLfloat GLfloat GLfloat GLfloat const GLubyte *bitmap _GL_VOID_RET _GL_VOID GLenum const void *lists _GL_VOID_RET _GL_VOID const GLdouble *equation _GL_VOID_RET _GL_VOID GLdouble GLdouble blue _GL_VOID_RET _GL_VOID GLfloat GLfloat blue _GL_VOID_RET _GL_VOID GLint GLint blue _GL_VOID_RET _GL_VOID GLshort GLshort blue _GL_VOID_RET _GL_VOID GLubyte GLubyte blue _GL_VOID_RET _GL_VOID GLuint GLuint blue _GL_VOID_RET _GL_VOID GLushort GLushort blue _GL_VOID_RET _GL_VOID GLbyte GLbyte GLbyte alpha _GL_VOID_RET _GL_VOID GLdouble GLdouble GLdouble alpha _GL_VOID_RET _GL_VOID GLfloat GLfloat GLfloat alpha _GL_VOID_RET _GL_VOID GLint GLint GLint alpha _GL_VOID_RET _GL_VOID GLshort GLshort GLshort alpha _GL_VOID_RET _GL_VOID GLubyte GLubyte GLubyte alpha _GL_VOID_RET _GL_VOID GLuint GLuint GLuint alpha _GL_VOID_RET _GL_VOID GLushort GLushort GLushort alpha _GL_VOID_RET _GL_VOID GLenum mode _GL_VOID_RET _GL_VOID GLint y
static DBVT_INLINE btScalar size(const btDbvtVolume &a)
Definition: btDbvt.cpp:52
void generate_glare(float *data, MemoryBuffer *input_tile, NodeGlare *settings) override
a MemoryBuffer contains access to the data of a chunk
void read(float *result, int x, int y, MemoryBufferExtend extend_x=MemoryBufferExtend::Clip, MemoryBufferExtend extend_y=MemoryBufferExtend::Clip)
const rcti & get_rect() const
get the rect of this MemoryBuffer
const int get_width() const
get the width of this MemoryBuffer
const int get_height() const
get the height of this MemoryBuffer
float * get_buffer()
get the data of this MemoryBuffer
void read_bilinear(float *result, float x, float y, MemoryBufferExtend extend_x=MemoryBufferExtend::Clip, MemoryBufferExtend extend_y=MemoryBufferExtend::Clip) const
void clear()
clear the buffer. Make all pixels black transparent.
ccl_device_inline float3 pow(float3 v, float e)
Definition: math_float3.h:533
static unsigned a[3]
Definition: RandGen.cpp:78
INLINE Rall1d< T, V, S > cos(const Rall1d< T, V, S > &arg)
Definition: rall1d.h:319
INLINE Rall1d< T, V, S > sin(const Rall1d< T, V, S > &arg)
Definition: rall1d.h:311
float angle_ofs
char angle streaks