On 27/06/18 07:44, Ian Romanick wrote:
From: Ian Romanick <ian.d.roman...@intel.com>
The fsign(-abs(x)) tests tickle a bug in the Mesa i965 driver that was
found by inspection.
Signed-off-by: Ian Romanick <ian.d.roman...@intel.com>
---
.../execution/fs-sign-neg-abs.shader_test | 28 ++++++++++++++++
.../glsl-1.10/execution/fs-sign-neg.shader_test | 26 +++++++++++++++
.../execution/vs-sign-neg-abs.shader_test | 38 ++++++++++++++++++++++
.../glsl-1.10/execution/vs-sign-neg.shader_test | 36 ++++++++++++++++++++
4 files changed, 128 insertions(+)
create mode 100644 tests/spec/glsl-1.10/execution/fs-sign-neg-abs.shader_test
create mode 100644 tests/spec/glsl-1.10/execution/fs-sign-neg.shader_test
create mode 100644 tests/spec/glsl-1.10/execution/vs-sign-neg-abs.shader_test
create mode 100644 tests/spec/glsl-1.10/execution/vs-sign-neg.shader_test
diff --git a/tests/spec/glsl-1.10/execution/fs-sign-neg-abs.shader_test
b/tests/spec/glsl-1.10/execution/fs-sign-neg-abs.shader_test
new file mode 100644
index 000000000..285c6e749
--- /dev/null
+++ b/tests/spec/glsl-1.10/execution/fs-sign-neg-abs.shader_test
@@ -0,0 +1,28 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader passthrough]
+
+[fragment shader]
+uniform vec4 arg0;
+uniform vec4 arg1;
+uniform vec4 expect;
+
+void main()
+{
+ if (sign(-abs(arg0)) != -sign(abs(arg1)))
+ gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+ else if (sign(-abs(arg0)) != -abs(sign(arg1)))
+ gl_FragColor = vec4(0.5, 0.0, 0.5, 1.0);
+ else if (sign(-abs(arg0)) != expect)
+ gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0);
+ else
+ gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+
+[test]
+uniform vec4 arg0 -5.0 5.0 0.0 0.0
+uniform vec4 arg1 -2.0 2.0 0.0 0.0
+uniform vec4 expect 1.0 -1.0 0.0 0.0
Shouldn't this be:
uniform vec4 expect -1.0 -1.0 0.0 0.0
+draw rect -1 -1 2 2
+probe rgb 1 1 0.0 1.0 0.0
diff --git a/tests/spec/glsl-1.10/execution/fs-sign-neg.shader_test
b/tests/spec/glsl-1.10/execution/fs-sign-neg.shader_test
new file mode 100644
index 000000000..a881fc80f
--- /dev/null
+++ b/tests/spec/glsl-1.10/execution/fs-sign-neg.shader_test
@@ -0,0 +1,26 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader passthrough]
+
+[fragment shader]
+uniform vec4 arg0;
+uniform vec4 arg1;
+uniform vec4 expect;
+
+void main()
+{
+ if (sign(-arg0) != -sign(arg1))
+ gl_FragColor = vec4(1.0, 0.0, 0.0, 1.0);
+ else if (sign(-arg0) != expect)
+ gl_FragColor = vec4(0.0, 0.0, 1.0, 1.0);
+ else
+ gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
+}
+
+[test]
+uniform vec4 arg0 -5.0 5.0 0.0 0.0
+uniform vec4 arg1 -2.0 2.0 0.0 0.0
+uniform vec4 expect 1.0 -1.0 0.0 0.0
+draw rect -1 -1 2 2
+probe rgb 1 1 0.0 1.0 0.0
diff --git a/tests/spec/glsl-1.10/execution/vs-sign-neg-abs.shader_test
b/tests/spec/glsl-1.10/execution/vs-sign-neg-abs.shader_test
new file mode 100644
index 000000000..e7f0546f3
--- /dev/null
+++ b/tests/spec/glsl-1.10/execution/vs-sign-neg-abs.shader_test
@@ -0,0 +1,38 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader]
+uniform vec4 arg0;
+uniform vec4 arg1;
+uniform vec4 expect;
+
+varying vec4 color;
+
+void main()
+{
+ if (sign(-abs(arg0)) != -sign(abs(arg1)))
+ color = vec4(1.0, 0.0, 0.0, 1.0);
+ else if (sign(-abs(arg0)) != -abs(sign(arg1)))
+ color = vec4(0.5, 0.0, 0.5, 1.0);
+ else if (sign(-abs(arg0)) != expect)
+ color = vec4(0.0, 0.0, 1.0, 1.0);
+ else
+ color = vec4(0.0, 1.0, 0.0, 1.0);
+
+ gl_Position = gl_Vertex;
+}
+
+[fragment shader]
+varying vec4 color;
+
+void main()
+{
+ gl_FragColor = color;
+}
+
+[test]
+uniform vec4 arg0 -5.0 5.0 0.0 0.0
+uniform vec4 arg1 -2.0 2.0 0.0 0.0
+uniform vec4 expect 1.0 -1.0 0.0 0.0
+draw rect -1 -1 2 2
+probe rgb 1 1 0.0 1.0 0.0
diff --git a/tests/spec/glsl-1.10/execution/vs-sign-neg.shader_test
b/tests/spec/glsl-1.10/execution/vs-sign-neg.shader_test
new file mode 100644
index 000000000..0f7526d63
--- /dev/null
+++ b/tests/spec/glsl-1.10/execution/vs-sign-neg.shader_test
@@ -0,0 +1,36 @@
+[require]
+GLSL >= 1.10
+
+[vertex shader]
+uniform vec4 arg0;
+uniform vec4 arg1;
+uniform vec4 expect;
+
+varying vec4 color;
+
+void main()
+{
+ if (sign(-arg0) != -sign(arg1))
+ color = vec4(1.0, 0.0, 0.0, 1.0);
+ else if (sign(-arg0) != expect)
+ color = vec4(0.0, 0.0, 1.0, 1.0);
+ else
+ color = vec4(0.0, 1.0, 0.0, 1.0);
+
+ gl_Position = gl_Vertex;
+}
+
+[fragment shader]
+varying vec4 color;
+
+void main()
+{
+ gl_FragColor = color;
+}
+
+[test]
+uniform vec4 arg0 -5.0 5.0 0.0 0.0
+uniform vec4 arg1 -2.0 2.0 0.0 0.0
+uniform vec4 expect 1.0 -1.0 0.0 0.0
+draw rect -1 -1 2 2
+probe rgb 1 1 0.0 1.0 0.0
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