Mesh Batch Cache: get rid of the ORCO VBO data, and reconstruct it in shader.

With only one MADD instruction we recover the orco data and reduce both the storage and the fetching cost of an attrib layer.

2 files changed, 9 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_math_vector.h b/source/blender/blenlib/BLI_math_vector.h
index 3a34a199ba8..c1e5c1177cc 100644
--- a/source/blender/blenlib/BLI_math_vector.h
+++ b/source/blender/blenlib/BLI_math_vector.h
@@ -151,6 +151,7 @@ MINLINE void negate_v3_short(short r[3]);
 MINLINE void negate_v3_db(double r[3]);
 
 MINLINE void invert_v2(float r[2]);
+MINLINE void invert_v3(float r[3]);
 
 MINLINE void abs_v2(float r[2]);
 MINLINE void abs_v2_v2(float r[2], const float a[2]);
diff --git a/source/blender/blenlib/intern/math_vector_inline.c b/source/blender/blenlib/intern/math_vector_inline.c
index 75bbfda3f5b..4f658ef015f 100644
--- a/source/blender/blenlib/intern/math_vector_inline.c
+++ b/source/blender/blenlib/intern/math_vector_inline.c
@@ -658,6 +658,14 @@ MINLINE void invert_v2(float r[2])
 	r[1] = 1.0f / r[1];
 }
 
+MINLINE void invert_v3(float r[3])
+{
+	BLI_assert(!ELEM(0.0f, r[0], r[1], r[2]));
+	r[0] = 1.0f / r[0];
+	r[1] = 1.0f / r[1];
+	r[2] = 1.0f / r[2];
+}
+
 MINLINE void abs_v2(float r[2])
 {
 	r[0] = fabsf(r[0]);