WIP on RWTexture types on CUDA/CPU (#1234)

* CUDA support for array of resources.

* * Add support for Texture2DArray on CPU
* Expand texture-simple.slang to test Texture2DArray

* Reorganise CUDAComputeUtil to split out createTextureResource.

* Add TextureCubeArray support for CPU/CUDA targets.

* Pulled out CUDAResource
Renamed derived classes to reflect that change.

* Creation of SurfObject type.

* Functions to return read/write access for simplifying future additions.

* WIP for RWTexture access on CPU/CUDA.

* CUsurfObject cannot have mips.

* Ability to set number of mips on test data.
Preliminary support for CUsurfObj and RWTexture1D on CUDA.
CUDA docs improvements.

* Fix typo.

1 files changed, 12 insertions, 1 deletions

diff --git a/tools/render-test/shader-input-layout.cpp b/tools/render-test/shader-input-layout.cpp
index 108483a2a..f9d6a60e1 100644
--- a/tools/render-test/shader-input-layout.cpp
+++ b/tools/render-test/shader-input-layout.cpp
@@ -452,6 +452,12 @@ namespace renderer_test
                                     entry.textureDesc.format = format;
                                     entry.bufferDesc.format = format;
                                 }
+                                else if(word == "mipMaps")
+                                {
+                                    parser.Read("=");
+                                    entry.textureDesc.mipMapCount = int(parser.ReadInt());
+                                }
+
                                 if (parser.LookAhead(","))
                                     parser.Read(",");
                                 else
@@ -974,7 +980,12 @@ namespace renderer_test
             arraySize *= 6;
         output.arraySize = arraySize;
         output.textureSize = inputDesc.size;
-        output.mipLevels = Math::Log2Floor(output.textureSize) + 1;
+
+        const Index maxMipLevels = Math::Log2Floor(output.textureSize) + 1;
+        Index mipLevels = (inputDesc.mipMapCount <= 0) ? maxMipLevels : inputDesc.mipMapCount;
+        mipLevels = (mipLevels > maxMipLevels) ? maxMipLevels : mipLevels;
+
+        output.mipLevels = int(mipLevels); 
         output.dataBuffer.setCount(output.mipLevels * output.arraySize);
 
         int slice = 0;