Texture Sample available in CUDA (#1176)

* WIP: Trying to figure out how texturing will work with CUDA.

* WIP: Fixes for CUDA layout. Initial CUDA texture test.

* WIP: Outputs something compilable by CUDA for TextureND.Sample

* 2d texture working with CUDA.

* Fix how binding for SamplerState occurs in CUDA.

* Small tidy up of comments.

2 files changed, 26 insertions, 0 deletions

diff --git a/tests/cuda/cuda-texture.slang b/tests/cuda/cuda-texture.slang
new file mode 100644
index 000000000..3b5bae8ee
--- /dev/null
+++ b/tests/cuda/cuda-texture.slang
@@ -0,0 +1,22 @@
+//TEST(compute):COMPARE_COMPUTE:-cpu -compute 
+//TEST(compute):COMPARE_COMPUTE:-cuda -compute 
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<float> outputBuffer : register(u0);
+
+//TEST_INPUT: Texture2D(size=4, content=one):name texture
+Texture2D<float> texture;
+
+//TEST_INPUT: Sampler:name sampler
+SamplerState sampler;
+
+[numthreads(4, 1, 1)]
+void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
+{
+	int tid = int(dispatchThreadID.x);
+    float u = tid * (1.0f / 3.0f);
+    float v = 1.0f - u;
+    float2 uv = float2(u, v);
+
+    outputBuffer[tid] = texture.Sample(sampler, uv);
+}
diff --git a/tests/cuda/cuda-texture.slang.expected.txt b/tests/cuda/cuda-texture.slang.expected.txt
new file mode 100644
index 000000000..cc5e55ab6
--- /dev/null
+++ b/tests/cuda/cuda-texture.slang.expected.txt
@@ -0,0 +1,4 @@
+3F800000
+3F800000
+3F800000
+3F800000