fdo30337{a,b}: New tests for radeon presubtract.

2 files changed, 42 insertions, 0 deletions

diff --git a/tests/shaders/generic/fdo30337a.vpfp b/tests/shaders/generic/fdo30337a.vpfp
new file mode 100644
index 00000000..48b97d73
--- /dev/null
+++ b/tests/shaders/generic/fdo30337a.vpfp
@@ -0,0 +1,17 @@
+!!ARBvp1.0
+OPTION ARB_position_invariant;
+END
+
+!!ARBfp1.0
+#This tests instructions like: ADD Temp[0], Temp[0], Temp[1] where one of
+#the source registers is the same as the destination register.  These
+#should not be replaced with presubtract operations.
+TEMP color;
+MOV color, {0.1, 0.4, 0.8, 1.0};
+ADD color.x, color.x, color.x;
+ADD color.y, color.x, color.y;
+MOV result.color, color;
+END
+
+!!test
+expected          0.2     0.6      0.8      1.0
diff --git a/tests/shaders/generic/fdo30337b.vpfp b/tests/shaders/generic/fdo30337b.vpfp
new file mode 100644
index 00000000..e6809fc2
--- /dev/null
+++ b/tests/shaders/generic/fdo30337b.vpfp
@@ -0,0 +1,25 @@
+!!ARBvp1.0
+OPTION ARB_position_invariant;
+END
+
+!!ARBfp1.0
+#This test is for instructions that read from more components than the
+#presubtract operation writes.  For example:
+#ADD Temp[0].x Temp[1].x, Temp[2].x
+#MUL Temp[4]x. Temp[0].x, Temp[5].x
+#DP3 Temp[6].x Temp[0].xyz, Temp[0].xyz
+#The ADD instruction can be converted to a presubtract operation and be
+#used by the MUL instruction, but it cannot be used by the DP3 instruction
+#since that instruction reads from more than just the x component of Temp[0].
+#Therefore the ADD instruction should not be removed.
+TEMP color;
+MOV color, {0.1, 0.4, 0.8, 1.0};
+SUB color.x, color.x, color.x;
+ADD color.y, color.x, color.y;
+SUB color.z, color.x, color.x;
+DP3 color.w, color, color;
+MOV result.color, color;
+END
+
+!!test
+expected          0.0     0.4      0.0      0.16