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authorChristoph Bumiller <[email protected]>2011-04-17 00:14:31 +0200
committerChristoph Bumiller <[email protected]>2011-04-17 00:17:14 +0200
commita582b859f73c06e4fc7d4b17d8aaab9060fb9498 (patch)
tree5c7c3dc33939f59ddbf1278f3a4b6a6c459d3894 /src/gallium/drivers
parent97535699ee610a2f66732609f966102150847d3c (diff)
nvc0: fix viewport rectangle calculation
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r--src/gallium/drivers/nvc0/nvc0_state_validate.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/src/gallium/drivers/nvc0/nvc0_state_validate.c b/src/gallium/drivers/nvc0/nvc0_state_validate.c
index 23a552622e1..9b2a28150b1 100644
--- a/src/gallium/drivers/nvc0/nvc0_state_validate.c
+++ b/src/gallium/drivers/nvc0/nvc0_state_validate.c
@@ -1,6 +1,7 @@
+#include "util/u_math.h"
+
#include "nvc0_context.h"
-#include "os/os_time.h"
static void
nvc0_validate_zcull(struct nvc0_context *nvc0)
@@ -213,10 +214,11 @@ nvc0_validate_viewport(struct nvc0_context *nvc0)
/* now set the viewport rectangle to viewport dimensions for clipping */
- x = (int)(vp->translate[0] - fabsf(vp->scale[0]));
- y = (int)(vp->translate[1] - fabsf(vp->scale[1]));
- w = (int)fabsf(2.0f * vp->scale[0]);
- h = (int)fabsf(2.0f * vp->scale[1]);
+ x = util_iround(MAX2(0.0f, vp->translate[0] - fabsf(vp->scale[0])));
+ y = util_iround(MAX2(0.0f, vp->translate[1] - fabsf(vp->scale[1])));
+ w = util_iround(vp->translate[0] + fabsf(vp->scale[0])) - x;
+ h = util_iround(vp->translate[1] + fabsf(vp->scale[1])) - y;
+
zmin = vp->translate[2] - fabsf(vp->scale[2]);
zmax = vp->translate[2] + fabsf(vp->scale[2]);