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-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_sample.c13
1 files changed, 10 insertions, 3 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample.c b/src/gallium/auxiliary/gallivm/lp_bld_sample.c
index d9fbbbe70f..6e53bca269 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample.c
@@ -362,9 +362,16 @@ lp_build_minify(struct lp_build_sample_context *bld,
LLVMValueRef base_size,
LLVMValueRef level)
{
- LLVMValueRef size = LLVMBuildLShr(bld->builder, base_size, level, "minify");
- size = lp_build_max(&bld->int_coord_bld, size, bld->int_coord_bld.one);
- return size;
+ if (level == bld->int_coord_bld.zero) {
+ /* if we're using mipmap level zero, no minification is needed */
+ return base_size;
+ }
+ else {
+ LLVMValueRef size =
+ LLVMBuildLShr(bld->builder, base_size, level, "minify");
+ size = lp_build_max(&bld->int_coord_bld, size, bld->int_coord_bld.one);
+ return size;
+ }
}