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i915: Fix i830 polygon stipple from PBOs.

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This is a direct port of the i915 patch in
a856da6324.

Fixes glean's pbo test.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=41372
Reviewed-by: Eric Anholt <eric@anholt.net>
NOTE: This is a candidate for release branches.
(cherry picked from commit 489ac8e73a)
This commit is contained in:
Kurt Roeckx 2012-03-02 17:31:23 -08:00 • committed by Ian Romanick
parent 5696077656
commit a3f6e8f431
1 changed files with 7 additions and 1 deletions
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8
src/mesa/drivers/dri/i915/i830_state.c
View file

@ -476,7 +476,7 @@ static void
i830PolygonStipple(struct gl_context * ctx, const GLubyte * mask)
{
struct i830_context *i830 = i830_context(ctx);
const GLubyte *m = mask;
const GLubyte *m;
GLubyte p[4];
int i, j, k;
int active = (ctx->Polygon.StippleFlag &&
@ -488,6 +488,12 @@ i830PolygonStipple(struct gl_context * ctx, const GLubyte * mask)
i830->state.Stipple[I830_STPREG_ST1] &= ~ST1_ENABLE;
}
/* Use the already unpacked stipple data from the context rather than the
* uninterpreted mask passed in.
*/
mask = (const GLubyte *)ctx->PolygonStipple;
m = mask;
p[0] = mask[12] & 0xf;
p[0] |= p[0] << 4;
p[1] = mask[8] & 0xf;