Hi;
Test looks good and passes fine on HSW;
Reviewed-by: Tapani Pälli <[email protected]>
With INTEL_DEVID_OVERRIDE (0x0046 or 0x2A42) though it does not seem to
hit the mentioned optimization, since the comparison operation is
ir_binop_gequal, this is on HSW desktop machine.
On 03/17/2015 11:51 PM, Ian Romanick wrote:
From: Ian Romanick <[email protected]>
This is a general step() test, but it is designed to tickle an
optimization path in the GEN4 and GEN5 code generation in the i965
driver. This optimization tries to generate different code for
expressions like 'float(expr cmp 0)'.
Signed-off-by: Ian Romanick <[email protected]>
Cc: Tapani Palli <[email protected]>
---
tests/spec/glsl-1.10/execution/fs-step.shader_test | 35 ++++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 tests/spec/glsl-1.10/execution/fs-step.shader_test
diff --git a/tests/spec/glsl-1.10/execution/fs-step.shader_test
b/tests/spec/glsl-1.10/execution/fs-step.shader_test
new file mode 100644
index 0000000..2ea0725
--- /dev/null
+++ b/tests/spec/glsl-1.10/execution/fs-step.shader_test
@@ -0,0 +1,35 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader passthrough]
+
+[fragment shader]
+uniform float a;
+uniform float b;
+uniform vec4 color0;
+uniform vec4 color1;
+
+void main()
+{
+ /* This is a general step() test, but it is designed to tickle an
+ * optimization path in the GEN4 and GEN5 code generation in the i965
+ * driver. This optimization tries to generate different code for
+ * expressions like 'float(expr cmp 0)'.
+ */
+ gl_FragColor = step(0.0, a * b) * color0 + color1;
+}
+
+[test]
+uniform float a -1
+uniform float b 1
+uniform vec4 color0 1.0 -1.0 0.0 0.0
+uniform vec4 color1 0.0 1.0 0.0 1.0
+draw rect -1 -1 1 2
+relative probe rgba (0.25, 0.5) (0.0, 1.0, 0.0, 1.0)
+
+uniform float a 1
+uniform float b 1
+uniform vec4 color0 -1.0 1.0 0.0 0.0
+uniform vec4 color1 1.0 0.0 0.0 1.0
+draw rect 0 -1 1 2
+relative probe rgba (0.75, 0.5) (0.0, 1.0, 0.0, 1.0)
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