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i965: Consider all viewports before enabling guardband clipping

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Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Ian Romanick 2014-01-08 12:14:49 -08:00
parent bdff9a6e47
commit d3ee8ba346
1 changed files with 9 additions and 5 deletions
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14
src/mesa/drivers/dri/i965/gen6_clip_state.c
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@ -96,11 +96,15 @@ upload_clip_state(struct brw_context *brw)
dw2 |= (ctx->Transform.ClipPlanesEnabled <<
GEN6_USER_CLIP_CLIP_DISTANCES_SHIFT);
if (ctx->ViewportArray[0].X == 0 &&
ctx->ViewportArray[0].Y == 0 &&
ctx->ViewportArray[0].Width == (float) fb->Width &&
ctx->ViewportArray[0].Height == (float) fb->Height) {
dw2 |= GEN6_CLIP_GB_TEST;
dw2 |= GEN6_CLIP_GB_TEST;
for (unsigned i = 0; i < ctx->Const.MaxViewports; i++) {
if (ctx->ViewportArray[i].X != 0 ||
ctx->ViewportArray[i].Y != 0 ||
ctx->ViewportArray[i].Width != (float) fb->Width ||
ctx->ViewportArray[i].Height != (float) fb->Height) {
dw2 &= ~GEN6_CLIP_GB_TEST;
break;
}
}
/* BRW_NEW_RASTERIZER_DISCARD */