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nvc0: fix viewport rectangle calculation

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This commit is contained in:
Christoph Bumiller 2011-04-17 00:14:31 +02:00
parent 97535699ee
commit a582b859f7
1 changed files with 7 additions and 5 deletions
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12
src/gallium/drivers/nvc0/nvc0_state_validate.c
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@ -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]);