From 9e9d69979c7aff7dac2d670af950f4a50273bcde Mon Sep 17 00:00:00 2001 From: Roland Scheidegger Date: Sun, 13 Mar 2016 19:13:09 +0100 Subject: [PATCH] softpipe: fix anisotropic filtering crash The filt_args->offset wasn't assigned but was always used later leading to a crash (as far as I can tell, texel offsets don't actually make much sense with anisotropic filtering, but because there's no explicit setting if offsets are enabled there the array is always accessed). This fixes https://bugs.freedesktop.org/show_bug.cgi?id=94481 Reviewed-by: Eduardo Lima Mitev CC: --- src/gallium/drivers/softpipe/sp_tex_sample.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c index e3e28a3..e6bdd50 100644 --- a/src/gallium/drivers/softpipe/sp_tex_sample.c +++ b/src/gallium/drivers/softpipe/sp_tex_sample.c @@ -2209,6 +2209,7 @@ img_filter_2d_ewa(const struct sp_sampler_view *sp_sview, const float t[TGSI_QUAD_SIZE], const float p[TGSI_QUAD_SIZE], const uint faces[TGSI_QUAD_SIZE], + const int8_t *offset, unsigned level, const float dudx, const float dvdx, const float dudy, const float dvdy, @@ -2268,6 +2269,8 @@ img_filter_2d_ewa(const struct sp_sampler_view *sp_sview, /* F *= formScale; */ /* no need to scale F as we don't use it below here */ args.level = level; + args.offset = offset; + for (j = 0; j < TGSI_QUAD_SIZE; j++) { /* Heckbert MS thesis, p. 59; scan over the bounding box of the ellipse * and incrementally update the value of Ax^2+Bxy*Cy^2; when this @@ -2431,6 +2434,8 @@ mip_filter_linear_aniso(const struct sp_sampler_view *sp_sview, const float dvdy = (t[QUAD_TOP_LEFT] - t[QUAD_BOTTOM_LEFT]) * t_to_v; struct img_filter_args args; + args.offset = filt_args->offset; + if (filt_args->control == TGSI_SAMPLER_LOD_BIAS || filt_args->control == TGSI_SAMPLER_LOD_NONE || /* XXX FIXME */ @@ -2503,8 +2508,8 @@ mip_filter_linear_aniso(const struct sp_sampler_view *sp_sview, * seem to be worth the extra running time. */ img_filter_2d_ewa(sp_sview, sp_samp, min_filter, mag_filter, - s, t, p, filt_args->faces, level0, - dudx, dvdx, dudy, dvdy, rgba); + s, t, p, filt_args->faces, filt_args->offset, + level0, dudx, dvdx, dudy, dvdy, rgba); } if (DEBUG_TEX) { -- 2.7.4