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authorKeith Whitwell <keithw@vmware.com>2009-07-17 10:47:32 +0100
committerJosé Fonseca <jfonseca@vmware.com>2009-08-29 09:21:17 +0100
commit0aa24fa36f7aea8e25c392eeeef6f9c108f09aba (patch)
tree89847c762fd225c27c8be80029f91396b91f6932 /src/gallium/drivers
parent0f55a95b2faa16cc008143c53a8b82b19c5d750a (diff)
llvmpipe: simplify flush_spans
No loss of performance, but simpler code.
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_setup.c72
1 files changed, 19 insertions, 53 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index e4cf0a60fa..191206ba87 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -428,65 +428,31 @@ static void flush_spans( struct setup_context *setup )
int minleft, maxright;
int x;
- switch (setup->span.y_flags) {
- case 0x3:
- /* both odd and even lines written (both quad rows) */
- minleft = block(MIN2(xleft0, xleft1));
- maxright = block(MAX2(xright0, xright1));
- for (x = minleft; x <= maxright; x += 2) {
- /* determine which of the four pixels is inside the span bounds */
- uint mask = 0x0;
- if (x >= xleft0 && x < xright0)
- mask |= MASK_TOP_LEFT;
- if (x >= xleft1 && x < xright1)
- mask |= MASK_BOTTOM_LEFT;
- if (x+1 >= xleft0 && x+1 < xright0)
- mask |= MASK_TOP_RIGHT;
- if (x+1 >= xleft1 && x+1 < xright1)
- mask |= MASK_BOTTOM_RIGHT;
- if (mask)
- EMIT_QUAD( setup, x, setup->span.y, mask );
- }
- break;
-
- case 0x1:
- /* only even line written (quad top row) */
- minleft = block(xleft0);
- maxright = block(xright0);
- for (x = minleft; x <= maxright; x += 2) {
- uint mask = 0x0;
- if (x >= xleft0 && x < xright0)
- mask |= MASK_TOP_LEFT;
- if (x+1 >= xleft0 && x+1 < xright0)
- mask |= MASK_TOP_RIGHT;
- if (mask)
- EMIT_QUAD( setup, x, setup->span.y, mask );
- }
- break;
-
- case 0x2:
- /* only odd line written (quad bottom row) */
- minleft = block(xleft1);
- maxright = block(xright1);
- for (x = minleft; x <= maxright; x += 2) {
- uint mask = 0x0;
- if (x >= xleft1 && x < xright1)
- mask |= MASK_BOTTOM_LEFT;
- if (x+1 >= xleft1 && x+1 < xright1)
- mask |= MASK_BOTTOM_RIGHT;
- if (mask)
- EMIT_QUAD( setup, x, setup->span.y, mask );
- }
- break;
-
- default:
- return;
+ minleft = block(MIN2(xleft0, xleft1));
+ maxright = block(MAX2(xright0, xright1));
+
+ for (x = minleft; x <= maxright; x += 2) {
+ /* determine which of the four pixels is inside the span bounds */
+ uint mask = 0x0;
+ if (x >= xleft0 && x < xright0)
+ mask |= MASK_TOP_LEFT;
+ if (x >= xleft1 && x < xright1)
+ mask |= MASK_BOTTOM_LEFT;
+ if (x+1 >= xleft0 && x+1 < xright0)
+ mask |= MASK_TOP_RIGHT;
+ if (x+1 >= xleft1 && x+1 < xright1)
+ mask |= MASK_BOTTOM_RIGHT;
+ if (mask)
+ EMIT_QUAD( setup, x, setup->span.y, mask );
}
+
setup->span.y = 0;
setup->span.y_flags = 0;
setup->span.right[0] = 0;
setup->span.right[1] = 0;
+ setup->span.left[0] = 1; /* greater than right[0] */
+ setup->span.left[1] = 1; /* greater than right[1] */
}