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anv/pipeline: Only consider double elements which actually exist 

The brw_vs_prog_data::double_inputs_read field comes directly from
shader_info::double_inputs which may contain inputs which are not
actually read.  Instead of using it directly, AND it with inputs_read
which is only things which are read.  Otherwise, we may end up
subtracting too many elements when computing elem_count.

Cc: mesa-stable@lists.freedesktop.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103241
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand 2018-09-04 13:58:01 -05:00
parent 44ec31cd75
commit 7b26741806
1 changed files with 2 additions and 1 deletions
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3
src/intel/vulkan/genX_pipeline.c
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@ -91,7 +91,8 @@ emit_vertex_input(struct anv_pipeline *pipeline,
/* Pull inputs_read out of the VS prog data */
const uint64_t inputs_read = vs_prog_data->inputs_read;
const uint64_t double_inputs_read = vs_prog_data->double_inputs_read;
const uint64_t double_inputs_read =
vs_prog_data->double_inputs_read & inputs_read;
assert((inputs_read & ((1 << VERT_ATTRIB_GENERIC0) - 1)) == 0);
const uint32_t elements = inputs_read >> VERT_ATTRIB_GENERIC0;
const uint32_t elements_double = double_inputs_read >> VERT_ATTRIB_GENERIC0;