archive/blender-archive
Archived
1
1
Fork 0
Code Pull Requests Packages Activity

minor speedup for the glare compositor node

Browse Source 
- pre calculate the UV dot product
- use image width and height converted to floats in the inner loop.
This commit is contained in:
Campbell Barton
2012-06-20 08:11:59 +00:00
parent fc1164c223
commit 586f202eac
2 changed files with 16 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
source/blender/compositor/operations/COM_ScreenLensDistortionOperation.cpp
View File

@@ -72,19 +72,20 @@ void ScreenLensDistortionOperation::executePixel(float *outputColor, int x, int
float tc[4] = {0, 0, 0, 0};
const float v = sc * ((y + 0.5f) - cy) / cy;
const float u = sc * ((x + 0.5f) - cx) / cx;
const float uv_dot = u * u + v * v;
int sta = 0, mid = 0, end = 0;
if ((t = 1.f - kr4 * (u * u + v * v)) >= 0.f) {
if ((t = 1.f - kr4 * uv_dot) >= 0.f) {
d = 1.f / (1.f + sqrtf(t));
ln[0] = (u * d + 0.5f) * width - 0.5f, ln[1] = (v * d + 0.5f) * height - 0.5f;
sta = 1;
}
if ((t = 1.f - kg4 * (u * u + v * v)) >= 0.f) {
if ((t = 1.f - kg4 * uv_dot) >= 0.f) {
d = 1.f / (1.f + sqrtf(t));
ln[2] = (u * d + 0.5f) * width - 0.5f, ln[3] = (v * d + 0.5f) * height - 0.5f;
mid = 1;
}
if ((t = 1.f - kb4 * (u * u + v * v)) >= 0.f) {
if ((t = 1.f - kb4 * uv_dot) >= 0.f) {
d = 1.f / (1.f + sqrtf(t));
ln[4] = (u * d + 0.5f) * width - 0.5f, ln[5] = (v * d + 0.5f) * height - 0.5f;
end = 1;
@@ -103,10 +104,10 @@ void ScreenLensDistortionOperation::executePixel(float *outputColor, int x, int
for (z = 0; z < ds; ++z) {
const float tz = ((float)z + (jit ? BLI_frand() : 0.5f)) * sd;
t = 1.f - (kr4 + tz * drg) * (u * u + v * v);
t = 1.f - (kr4 + tz * drg) * uv_dot;
d = 1.f / (1.f + sqrtf(t));
const float nx = (u * d + 0.5f) * getWidth() - 0.5f;
const float ny = (v * d + 0.5f) * getHeight() - 0.5f;
const float nx = (u * d + 0.5f) * width - 0.5f;
const float ny = (v * d + 0.5f) * height - 0.5f;
buffer->readCubic(color, nx, ny);
tc[0] += (1.f - tz) * color[0], tc[1] += tz * color[1];
dr++, dg++;
@@ -121,10 +122,10 @@ void ScreenLensDistortionOperation::executePixel(float *outputColor, int x, int
for (z = 0; z < ds; ++z) {
const float tz = ((float)z + (jit ? BLI_frand() : 0.5f)) * sd;
t = 1.f - (kg4 + tz * dgb) * (u * u + v * v);
t = 1.f - (kg4 + tz * dgb) * uv_dot;
d = 1.f / (1.f + sqrtf(t));
const float nx = (u * d + 0.5f) * getWidth() - 0.5f;
const float ny = (v * d + 0.5f) * getHeight() - 0.5f;
const float nx = (u * d + 0.5f) * width - 0.5f;
const float ny = (v * d + 0.5f) * height - 0.5f;
buffer->readCubic(color, nx, ny);
tc[1] += (1.f - tz) * color[1], tc[2] += tz * color[2];
dg++, db++;