[Bf-blender-cvs] [2ea47057d33] master: Compositor: Fix pixels being wrapped outside buffer area
Manuel Castilla
noreply at git.blender.org
Tue Jul 13 22:50:11 CEST 2021
Commit: 2ea47057d33ebfa4ef5dfe687adc66464430e8f8
Author: Manuel Castilla
Date: Tue Jul 13 20:30:07 2021 +0200
Branches: master
https://developer.blender.org/rB2ea47057d33ebfa4ef5dfe687adc66464430e8f8
Compositor: Fix pixels being wrapped outside buffer area
Not causing issues in current master because all buffer areas are at
(0, 0) position and `Extend` is not used. But areas may be at any
position in future developments and it will crash.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D11784
===================================================================
M source/blender/compositor/intern/COM_MemoryBuffer.h
===================================================================
diff --git a/source/blender/compositor/intern/COM_MemoryBuffer.h b/source/blender/compositor/intern/COM_MemoryBuffer.h
index 89068a7b734..4ad0872b0b7 100644
--- a/source/blender/compositor/intern/COM_MemoryBuffer.h
+++ b/source/blender/compositor/intern/COM_MemoryBuffer.h
@@ -264,11 +264,14 @@ class MemoryBuffer {
x = 0;
}
if (x >= w) {
- x = w;
+ x = w - 1;
}
break;
case MemoryBufferExtend::Repeat:
- x = (x >= 0.0f ? (x % w) : (x % w) + w);
+ x %= w;
+ if (x < 0) {
+ x += w;
+ }
break;
}
@@ -280,13 +283,19 @@ class MemoryBuffer {
y = 0;
}
if (y >= h) {
- y = h;
+ y = h - 1;
}
break;
case MemoryBufferExtend::Repeat:
- y = (y >= 0.0f ? (y % h) : (y % h) + h);
+ y %= h;
+ if (y < 0) {
+ y += h;
+ }
break;
}
+
+ x = x + m_rect.xmin;
+ y = y + m_rect.ymin;
}
inline void wrap_pixel(float &x,
@@ -307,11 +316,14 @@ class MemoryBuffer {
x = 0.0f;
}
if (x >= w) {
- x = w;
+ x = w - 1;
}
break;
case MemoryBufferExtend::Repeat:
x = fmodf(x, w);
+ if (x < 0.0f) {
+ x += w;
+ }
break;
}
@@ -323,13 +335,19 @@ class MemoryBuffer {
y = 0.0f;
}
if (y >= h) {
- y = h;
+ y = h - 1;
}
break;
case MemoryBufferExtend::Repeat:
y = fmodf(y, h);
+ if (y < 0.0f) {
+ y += h;
+ }
break;
}
+
+ x = x + m_rect.xmin;
+ y = y + m_rect.ymin;
}
inline void read(float *result,
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