[Piglit] [PATCH 44/63] arb_gl_spirv: Add test equivalent to CS basic-ssbo

[Alejandro Piñeiro]

From: Arcady Goldmints-Orlov <agoldmints at igalia.com>

The difference with
arb_compute_shader/execution/basic-ssbo.shader_test is that we
explicitly assign a binding to the SSBO.  Without a binding number
specified, glslang implicitly assigns a binding number of 1 to the
SSBO, while Mesa assigns a binding number of 0. To ensure the test
runs consistently in both cases, assign the binding explicitly.
---
 .../execution/cs-basic-ssbo.shader_test       | 82 +++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 tests/spec/arb_gl_spirv/execution/cs-basic-ssbo.shader_test

diff --git a/tests/spec/arb_gl_spirv/execution/cs-basic-ssbo.shader_test b/tests/spec/arb_gl_spirv/execution/cs-basic-ssbo.shader_test
new file mode 100644
index 000000000..2f286f3f6
--- /dev/null
+++ b/tests/spec/arb_gl_spirv/execution/cs-basic-ssbo.shader_test
@@ -0,0 +1,82 @@
+# This is copied from arb_compute_shader/execution/basic-ssbo.shader_test
+#
+# The difference is that we explicitly assign a binding to the SSBO.
+# Without a binding number specified, glslang implicitly assigns a
+# binding number of 1 to the SSBO, while Mesa assigns a binding number
+# of 0. To ensure the test runs consistently in both cases, assign the
+# binding explicitly.
+
+[require]
+GLSL >= 3.30
+GL_ARB_compute_shader
+GL_ARB_shader_storage_buffer_object
+GL_ARB_shader_atomic_counters
+
+[compute shader]
+#version 330
+#extension GL_ARB_compute_shader: enable
+#extension GL_ARB_shader_storage_buffer_object: require
+#extension GL_ARB_shader_atomic_counters: require
+
+#define SIZE 256u
+
+layout(local_size_x = SIZE) in;
+
+layout(binding = 0) uniform atomic_uint counter;
+
+layout(std430, binding = 0)
+buffer SSBO {
+	uint	u[SIZE];
+};
+
+uniform uint mode;
+
+void main()
+{
+	uint index = gl_LocalInvocationIndex;
+
+	switch (mode) {
+	case 0u:
+		u[index] = SIZE;
+		break;
+	case 1u:
+		u[index] = index;
+		break;
+	case 2u:
+		if (u[index] == SIZE)
+			atomicCounterIncrement(counter);
+		break;
+	case 3u:
+		if (u[index] == index)
+			atomicCounterIncrement(counter);
+		break;
+	}
+}
+
+[test]
+atomic counters 1
+ssbo 0 1024
+
+uniform uint mode 0
+compute 1 1 1
+probe atomic counter 0 == 0
+
+uniform uint mode 3
+compute 1 1 1
+probe atomic counter 0 == 0
+
+uniform uint mode 2
+compute 1 1 1
+probe atomic counter 0 == 256
+
+uniform uint mode 1
+compute 1 1 1
+probe atomic counter 0 == 256
+
+uniform uint mode 2
+compute 1 1 1
+probe atomic counter 0 == 256
+
+uniform uint mode 3
+compute 1 1 1
+probe atomic counter 0 == 512
-- 
2.19.1