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-rw-r--r--src/gallium/drivers/radeonsi/si_shader.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c
index fb1419ddb4d..4b1279cc26b 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -236,14 +236,14 @@ static LLVMValueRef get_instance_index_for_fetch(
LLVMValueRef result = LLVMGetParam(radeon_bld->main_fn,
si_shader_ctx->param_instance_id);
- result = LLVMBuildAdd(gallivm->builder, result, LLVMGetParam(
- radeon_bld->main_fn, SI_PARAM_START_INSTANCE), "");
+ /* The division must be done before START_INSTANCE is added. */
if (divisor > 1)
result = LLVMBuildUDiv(gallivm->builder, result,
lp_build_const_int32(gallivm, divisor), "");
- return result;
+ return LLVMBuildAdd(gallivm->builder, result, LLVMGetParam(
+ radeon_bld->main_fn, SI_PARAM_START_INSTANCE), "");
}
static void declare_input_vs(