GetDimension on GLSL for StructuredBuffer (#1081)

* Fix GetDimensions for glsl.

* Add test for Load on RWStructuredBuffer as part of GetDimension.

2 files changed, 67 insertions, 0 deletions

diff --git a/tests/cross-compile/get-dimensions.slang b/tests/cross-compile/get-dimensions.slang
new file mode 100644
index 000000000..eaa9b0cca
--- /dev/null
+++ b/tests/cross-compile/get-dimensions.slang
@@ -0,0 +1,59 @@
+//DISABLE_TEST:REFLECTION: -profile cs_5_0 -entry computeMain -target cpp 
+//TEST(compute):COMPARE_COMPUTE_EX:-vk -compute 
+//TEST(compute):COMPARE_COMPUTE_EX:-d3d12 -compute
+//TEST(compute):COMPARE_COMPUTE_EX:-d3d11 -compute  
+//TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute 
+
+struct Thing
+{
+    int a;
+    float b;
+};
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0], stride=4):dxbinding(0),glbinding(0),out,name outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+//TEST_INPUT:ubuffer(data=[7 2 9 53], stride=4):dxbinding(1),glbinding(1),name buffer0
+RWStructuredBuffer<int> buffer0;
+
+//TEST_INPUT:ubuffer(data=[23 2], stride=4):dxbinding(2),glbinding(2),name buffer1
+RWStructuredBuffer<int> buffer1;
+
+//TEST_INPUT:ubuffer(data=[-10 17 9 4 2 0], stride=4):dxbinding(3),glbinding(3),name buffer2
+RWStructuredBuffer<float> buffer2;
+
+//TEST_INPUT:ubuffer(data=[1 0 3 0 7 0], stride=8):dxbinding(4),glbinding(4),name buffer3
+RWStructuredBuffer<Thing> buffer3;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+    int index = int(dispatchThreadID.x);
+    int last = -1;
+    
+    uint count, stride;
+    if (index == 0)
+    {
+        buffer0.GetDimensions(count, stride);
+        last = buffer0.Load(count - 1);
+    }
+    else if (index == 1)
+    {
+        buffer1.GetDimensions(count, stride);
+        last = buffer1[count - 1];
+    }
+    else if (index == 2)
+    {
+        buffer2.GetDimensions(count, stride);
+        last = int(buffer2.Load(count -1));
+    }
+    else
+    {
+        buffer3.GetDimensions(count, stride);
+        
+        last = buffer3.Load(count - 1).a;
+    }
+ 
+	outputBuffer[index * 2] = int(count);
+    outputBuffer[index * 2 + 1] = last;
+}
\ No newline at end of file
diff --git a/tests/cross-compile/get-dimensions.slang.expected.txt b/tests/cross-compile/get-dimensions.slang.expected.txt
new file mode 100644
index 000000000..b90b9551c
--- /dev/null
+++ b/tests/cross-compile/get-dimensions.slang.expected.txt
@@ -0,0 +1,8 @@
+4
+35
+2
+2
+6
+0
+3
+7