Put edge.{dx,dy} into a union with a vector and perform subtractions in
setup_sort_vertices() on vectors.
Reduces spu_tri.o by ~300 bytes.
---
src/gallium/drivers/cell/spu/spu_tri.c | 18 ++++++++++--------
1 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/src/gallium/drivers/cell/spu/spu_tri.c
b/src/gallium/drivers/cell/spu/spu_tri.c
index c7ff75c..322be12 100644
--- a/src/gallium/drivers/cell/spu/spu_tri.c
+++ b/src/gallium/drivers/cell/spu/spu_tri.c
@@ -77,8 +77,13 @@ struct vertex_header {
* Triangle edge info
*/
struct edge {
- float dx; /**< X(v1) - X(v0), used only during setup */
- float dy; /**< Y(v1) - Y(v0), used only during setup */
+ union {
+ struct {
+ float dx; /**< X(v1) - X(v0), used only during setup */
+ float dy; /**< Y(v1) - Y(v0), used only during setup */
+ };
+ vec_float4 ds; /**< vector accessor for dx and dy */
+ };
float dxdy; /**< dx/dy */
float sx, sy; /**< first sample point coord */
int lines; /**< number of lines on this edge */
@@ -506,12 +511,9 @@ setup_sort_vertices(const struct vertex_header *v0,
spu_extract(setup.vmax->data[0], 0) > setup.cliprect_maxx)
return FALSE;
- setup.ebot.dx = spu_extract(setup.vmid->data[0], 0) -
spu_extract(setup.vmin->data[0], 0);
- setup.ebot.dy = spu_extract(setup.vmid->data[0], 1) -
spu_extract(setup.vmin->data[0], 1);
- setup.emaj.dx = spu_extract(setup.vmax->data[0], 0) -
spu_extract(setup.vmin->data[0], 0);
- setup.emaj.dy = spu_extract(setup.vmax->data[0], 1) -
spu_extract(setup.vmin->data[0], 1);
- setup.etop.dx = spu_extract(setup.vmax->data[0], 0) -
spu_extract(setup.vmid->data[0], 0);
- setup.etop.dy = spu_extract(setup.vmax->data[0], 1) -
spu_extract(setup.vmid->data[0], 1);
+ setup.ebot.ds = spu_sub(setup.vmid->data[0], setup.vmin->data[0]);
+ setup.emaj.ds = spu_sub(setup.vmax->data[0], setup.vmin->data[0]);
+ setup.etop.ds = spu_sub(setup.vmax->data[0], setup.vmid->data[0]);
/*
* Compute triangle's area. Use 1/area to compute partial
--
1.5.5.2
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