diff --git a/src/gallium/drivers/r300/compiler/r300_nir.c b/src/gallium/drivers/r300/compiler/r300_nir.c
index b84f29e5f39..127ff6bd311 100644
--- a/src/gallium/drivers/r300/compiler/r300_nir.c
+++ b/src/gallium/drivers/r300/compiler/r300_nir.c
@@ -68,6 +68,8 @@ r300_optimize_nir(struct nir_shader *s, struct pipe_screen *screen)
 
       NIR_PASS(progress, s, nir_copy_prop);
       NIR_PASS(progress, s, nir_opt_algebraic);
+      if (s->info.stage == MESA_SHADER_VERTEX)
+         NIR_PASS(progress, s, r300_nir_fuse_fround_d3d9);
       NIR_PASS(progress, s, nir_opt_constant_folding);
       NIR_PASS(progress, s, nir_opt_remove_phis);
       NIR_PASS(progress, s, nir_opt_conditional_discard);
diff --git a/src/gallium/drivers/r300/compiler/r300_nir.h b/src/gallium/drivers/r300/compiler/r300_nir.h
index d1624b15269..f1f4184fe19 100644
--- a/src/gallium/drivers/r300/compiler/r300_nir.h
+++ b/src/gallium/drivers/r300/compiler/r300_nir.h
@@ -32,4 +32,6 @@ extern bool r300_transform_vs_trig_input(struct nir_shader *shader);
 
 extern bool r300_transform_fs_trig_input(struct nir_shader *shader);
 
+extern bool r300_nir_fuse_fround_d3d9(struct nir_shader *shader);
+
 #endif /* R300_NIR_H */
diff --git a/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py b/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
index 78e990710aa..c1647792771 100644
--- a/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
+++ b/src/gallium/drivers/r300/compiler/r300_nir_algebraic.py
@@ -43,6 +43,19 @@ transform_trig_input_fs_r500 = [
         (('fcos', 'a'), ('fcos', ('ffract', ('fmul', 'a', 1 / (2 * pi))))),
 ]
 
+# The is a pattern produced by wined3d for A0 register load.
+# The specific pattern wined3d emits looks like this
+# A0.x = (int(floor(abs(R0.x) + 0.5) * sign(R0.x)));
+# however we lower both sign and floor so here we check for the already lowered
+# sequence.
+r300_nir_fuse_fround_d3d9 = [
+        (('fmul', ('fadd', ('fadd', ('fabs', 'a') , 0.5),
+                           ('fneg', ('ffract', ('fadd', ('fabs', 'a') , 0.5)))),
+                  ('fadd', ('b2f', ('!flt', 0.0, 'a')),
+                           ('fneg', ('b2f', ('!flt', 'a', 0.0))))),
+         ('fround_even', 'a'))
+]
+
 def main():
     parser = argparse.ArgumentParser()
     parser.add_argument('-p', '--import-path', required=True)
@@ -61,6 +74,8 @@ def main():
         f.write(nir_algebraic.AlgebraicPass("r300_transform_fs_trig_input",
                                             transform_trig_input_fs_r500).render())
 
+        f.write(nir_algebraic.AlgebraicPass("r300_nir_fuse_fround_d3d9",
+                                            r300_nir_fuse_fround_d3d9).render())
 
 if __name__ == '__main__':
     main()