gallivm/img: use uint for image coord builder.

VK CTS has a test that does -256 for sample index but since we use
signed >= we fail and write to random memory, changing to uint here
for comparisons for out of bounds and address calcs should ensure,
we stay within bounds even for negative vals.

Remove unused int_type/bld while here.

Fixes dEQP-VK.texture.multisample.invalid_sample_index.sample_count_4

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11913>

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
index c5616be..5895e1a 100644 (file)
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
@@ -4604,15 +4604,13 @@ lp_build_img_op_soa(const struct lp_static_texture_state *static_texture_state,
    unsigned target = params->target;
    unsigned dims = texture_dims(target);
    /** regular scalar int type */
-   struct lp_type int_type, int_coord_type;
-   struct lp_build_context int_bld, int_coord_bld;
+   struct lp_type int_coord_type;
+   struct lp_build_context int_coord_bld;
    const struct util_format_description *format_desc = util_format_description(static_texture_state->format);
    LLVMValueRef x = params->coords[0], y = params->coords[1], z = params->coords[2];
    LLVMValueRef ms_index = params->ms_index;
    LLVMValueRef row_stride_vec = NULL, img_stride_vec = NULL;
-   int_type = lp_type_int(32);
-   int_coord_type = lp_int_type(params->type);
-   lp_build_context_init(&int_bld, gallivm, int_type);
+   int_coord_type = lp_uint_type(params->type);
    lp_build_context_init(&int_coord_bld, gallivm, int_coord_type);
 
    if (static_texture_state->format == PIPE_FORMAT_NONE) {