[Mesa-dev] [PATCH] anv/pipeline: Only consider double elements which actually exist

[Jason Ekstrand]

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 at lists.freedesktop.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103241
---
 src/intel/vulkan/genX_pipeline.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/vulkan/genX_pipeline.c b/src/intel/vulkan/genX_pipeline.c
index b531205508c..297e9455b51 100644
--- a/src/intel/vulkan/genX_pipeline.c
+++ b/src/intel/vulkan/genX_pipeline.c
@@ -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;
-- 
2.17.1