Expanded gfx::Format to include additional formats (#1982)

* Format list updated with additional formats supported by both D3D and Vulkan; D3DUtil::getMapFormat() and VkUtil::getVkFormat() updated to include additional formats; GFX_FORMAT() updated with all additional formats (BC compression unfinished)

* Finished updating GFX_FORMAT with newly added formats and sizes; Pixel size is now tracked using the FormatPixelSize struct containing the values for bytes per block and pixels per block to accomodate BC formats; Updated gfxGetFormatSize and associated sub-calls to return FormatPixelSize instead of uint8_t; Most calls to gfxGetFormatSize() updated to reflect changes, a couple calls still unupdated

* Changes to accommodate new formats finished, debugging slang-literal unit test

* First format unit test working

* One test added for BC1Unorm and RGBA8Unorm_SRGB, both passing

* Refactored format testing code to merge BC1Unorm and RGBA8Unorm SRGB into a single file

* All unit tests added for BC and Srgb formats

* Most tests added and working; Added five additional formats (still need tests) and made the appropriate changes to support these; createTextureView() modified for D3D11, D3D12, and Vulkan to take into account the format specified in the texture view desc when the texture's format is typeless

* Format enums renamed to more closely match their D3D counterparts; Added a universal float and uint buffer and buffer view for use across all Format tests

* Remaining tests added; D3D12 tests pass, but Vulkan crashes in BC1_UNORM and D3D11 spits out a bunch of D3D11 Errors (but supposedly passes)

* re-run premake

* Added Sint versions of test shaders; Vulkan and D3D11 tests also pass

* Size struct for format unit tests no longer use initializer lists

* Fixed a Size struct missed in the previous pass

* Fixed minor bugs causing tests to fail

* Added documentation detailing all currently unsupported formats

* Skip tests causing unsupported format warnings due to swiftshader

* updated several test using old Format enum names

* Revert change to compareComputeResult() that was added for debugging purposes

* DEBUGGING: Added prints to identify which formats are failing on CI

* Reverted attempted debugging changes; Fixed texture2d-gather.hlsl to use updated Format enums

* Fixed incorrect array sizes in d3d11 _initSrvDesc()

* Commented out further tests that produce unexpected results when tested for Vulkan with swiftshader

* Revert "Merge branch 'expanded-format-support' of https://github.com/lucy96chen/slang into expanded-format-support"

This reverts commit 20008f0d3ecc3b1405ecac8c138edaa3cd37ed6b, reversing
changes made to 6081e95827315fee50e18409394d5abd62fac787.

* Added a fuzzy comparison function for use with floats

* submodule update

* Revert messed up changes caused by previous revert after automatically merging on github

6 files changed, 19 insertions, 19 deletions

diff --git a/examples/example-base/example-base.cpp b/examples/example-base/example-base.cpp
index c45e3cc27..a7a8e7673 100644
--- a/examples/example-base/example-base.cpp
+++ b/examples/example-base/example-base.cpp
@@ -50,7 +50,7 @@ Slang::Result WindowedAppBase::initializeBase(
 
     // Create swapchain and framebuffers.
     gfx::ISwapchain::Desc swapchainDesc = {};
-    swapchainDesc.format = gfx::Format::RGBA_Unorm_UInt8;
+    swapchainDesc.format = gfx::Format::R8G8B8A8_UNORM;
     swapchainDesc.width = width;
     swapchainDesc.height = height;
     swapchainDesc.imageCount = kSwapchainImageCount;
@@ -59,7 +59,7 @@ Slang::Result WindowedAppBase::initializeBase(
     gSwapchain = gDevice->createSwapchain(swapchainDesc, windowHandle);
 
     IFramebufferLayout::AttachmentLayout renderTargetLayout = {gSwapchain->getDesc().format, 1};
-    IFramebufferLayout::AttachmentLayout depthLayout = {gfx::Format::D_Float32, 1};
+    IFramebufferLayout::AttachmentLayout depthLayout = {gfx::Format::D32_FLOAT, 1};
     IFramebufferLayout::Desc framebufferLayoutDesc;
     framebufferLayoutDesc.renderTargetCount = 1;
     framebufferLayoutDesc.renderTargets = &renderTargetLayout;
@@ -117,7 +117,7 @@ void WindowedAppBase::createSwapchainFramebuffers()
         depthBufferDesc.size.width = gSwapchain->getDesc().width;
         depthBufferDesc.size.height = gSwapchain->getDesc().height;
         depthBufferDesc.size.depth = 1;
-        depthBufferDesc.format = gfx::Format::D_Float32;
+        depthBufferDesc.format = gfx::Format::D32_FLOAT;
         depthBufferDesc.defaultState = ResourceState::DepthWrite;
         depthBufferDesc.allowedStates = ResourceStateSet(ResourceState::DepthWrite);
         
@@ -136,7 +136,7 @@ void WindowedAppBase::createSwapchainFramebuffers()
 
         gfx::IResourceView::Desc depthBufferViewDesc;
         memset(&depthBufferViewDesc, 0, sizeof(depthBufferViewDesc));
-        depthBufferViewDesc.format = gfx::Format::D_Float32;
+        depthBufferViewDesc.format = gfx::Format::D32_FLOAT;
         depthBufferViewDesc.renderTarget.shape = gfx::IResource::Type::Texture2D;
         depthBufferViewDesc.type = gfx::IResourceView::Type::DepthStencil;
         ComPtr<gfx::IResourceView> dsv =
diff --git a/examples/model-viewer/main.cpp b/examples/model-viewer/main.cpp
index 6e21f9050..76b8fca05 100644
--- a/examples/model-viewer/main.cpp
+++ b/examples/model-viewer/main.cpp
@@ -744,9 +744,9 @@ Result initialize()
     SLANG_RETURN_ON_FAIL(context.init(gDevice));
 
     InputElementDesc inputElements[] = {
-        {"POSITION", 0, Format::RGB_Float32, offsetof(Model::Vertex, position) },
-        {"NORMAL",   0, Format::RGB_Float32, offsetof(Model::Vertex, normal) },
-        {"UV",       0, Format::RG_Float32,  offsetof(Model::Vertex, uv) },
+        {"POSITION", 0, Format::R32G32B32_FLOAT, offsetof(Model::Vertex, position) },
+        {"NORMAL",   0, Format::R32G32B32_FLOAT, offsetof(Model::Vertex, normal) },
+        {"UV",       0, Format::R32G32_FLOAT,  offsetof(Model::Vertex, uv) },
     };
     auto inputLayout = gDevice->createInputLayout(
         &inputElements[0],
@@ -870,7 +870,7 @@ void renderFrame(int frameIndex) override
     for(auto& model : gModels)
     {
         drawCommandEncoder->setVertexBuffer(0, model->vertexBuffer, sizeof(Model::Vertex));
-        drawCommandEncoder->setIndexBuffer(model->indexBuffer, Format::R_UInt32);
+        drawCommandEncoder->setIndexBuffer(model->indexBuffer, Format::R32_UINT);
         // For each model we provide a parameter
         // block that holds the per-model transformation
         // parameters, corresponding to the `PerModel` type
diff --git a/examples/ray-tracing-pipeline/main.cpp b/examples/ray-tracing-pipeline/main.cpp
index 3c83447b4..a1539f6a7 100644
--- a/examples/ray-tracing-pipeline/main.cpp
+++ b/examples/ray-tracing-pipeline/main.cpp
@@ -352,10 +352,10 @@ Slang::Result initialize()
         geomDesc.type = IAccelerationStructure::GeometryType::Triangles;
         geomDesc.content.triangles.indexCount = kIndexCount;
         geomDesc.content.triangles.indexData = gIndexBuffer->getDeviceAddress();
-        geomDesc.content.triangles.indexFormat = Format::R_UInt32;
+        geomDesc.content.triangles.indexFormat = Format::R32_UINT;
         geomDesc.content.triangles.vertexCount = kVertexCount;
         geomDesc.content.triangles.vertexData = gVertexBuffer->getDeviceAddress();
-        geomDesc.content.triangles.vertexFormat = Format::RGB_Float32;
+        geomDesc.content.triangles.vertexFormat = Format::R32G32B32_FLOAT;
         geomDesc.content.triangles.vertexStride = sizeof(Vertex);
         geomDesc.content.triangles.transform3x4 = gTransformBuffer->getDeviceAddress();
         accelerationStructureBuildInputs.geometryDescs = &geomDesc;
@@ -505,7 +505,7 @@ Slang::Result initialize()
         return SLANG_FAIL;
 
     InputElementDesc inputElements[] = {
-        {"POSITION", 0, Format::RG_Float32, offsetof(FullScreenTriangle::Vertex, position)},
+        {"POSITION", 0, Format::R32G32_FLOAT, offsetof(FullScreenTriangle::Vertex, position)},
     };
     auto inputLayout = gDevice->createInputLayout(&inputElements[0], SLANG_COUNT_OF(inputElements));
     if (!inputLayout)
@@ -554,7 +554,7 @@ void createResultTexture()
     resultTextureDesc.size.height = windowHeight;
     resultTextureDesc.size.depth = 1;
     resultTextureDesc.defaultState = ResourceState::UnorderedAccess;
-    resultTextureDesc.format = Format::RGBA_Float16;
+    resultTextureDesc.format = Format::R16G16B16A16_FLOAT;
     gResultTexture = gDevice->createTextureResource(resultTextureDesc);
     IResourceView::Desc resultUAVDesc = {};
     resultUAVDesc.format = resultTextureDesc.format;
diff --git a/examples/ray-tracing/main.cpp b/examples/ray-tracing/main.cpp
index bb02e157a..e51a601a2 100644
--- a/examples/ray-tracing/main.cpp
+++ b/examples/ray-tracing/main.cpp
@@ -344,10 +344,10 @@ Slang::Result initialize()
         geomDesc.type = IAccelerationStructure::GeometryType::Triangles;
         geomDesc.content.triangles.indexCount = kIndexCount;
         geomDesc.content.triangles.indexData = gIndexBuffer->getDeviceAddress();
-        geomDesc.content.triangles.indexFormat = Format::R_UInt32;
+        geomDesc.content.triangles.indexFormat = Format::R32_UINT;
         geomDesc.content.triangles.vertexCount = kVertexCount;
         geomDesc.content.triangles.vertexData = gVertexBuffer->getDeviceAddress();
-        geomDesc.content.triangles.vertexFormat = Format::RGB_Float32;
+        geomDesc.content.triangles.vertexFormat = Format::R32G32B32_FLOAT;
         geomDesc.content.triangles.vertexStride = sizeof(Vertex);
         geomDesc.content.triangles.transform3x4 = gTransformBuffer->getDeviceAddress();
         accelerationStructureBuildInputs.geometryDescs = &geomDesc;
@@ -497,7 +497,7 @@ Slang::Result initialize()
         return SLANG_FAIL;
 
     InputElementDesc inputElements[] = {
-        {"POSITION", 0, Format::RG_Float32, offsetof(FullScreenTriangle::Vertex, position)},
+        {"POSITION", 0, Format::R32G32_FLOAT, offsetof(FullScreenTriangle::Vertex, position)},
     };
     auto inputLayout = gDevice->createInputLayout(&inputElements[0], SLANG_COUNT_OF(inputElements));
     if (!inputLayout)
@@ -535,7 +535,7 @@ void createResultTexture()
     resultTextureDesc.size.height = windowHeight;
     resultTextureDesc.size.depth = 1;
     resultTextureDesc.defaultState = ResourceState::UnorderedAccess;
-    resultTextureDesc.format = Format::RGBA_Float16;
+    resultTextureDesc.format = Format::R16G16B16A16_FLOAT;
     gResultTexture = gDevice->createTextureResource(resultTextureDesc);
     IResourceView::Desc resultUAVDesc = {};
     resultUAVDesc.format = resultTextureDesc.format;
diff --git a/examples/shader-toy/main.cpp b/examples/shader-toy/main.cpp
index c41bd71ca..e4e2cafcc 100644
--- a/examples/shader-toy/main.cpp
+++ b/examples/shader-toy/main.cpp
@@ -282,7 +282,7 @@ Result initialize()
     gWindow->events.mouseDown = [this](const platform::MouseEventArgs& e) { handleEvent(e); };
 
     InputElementDesc inputElements[] = {
-        { "POSITION", 0, Format::RG_Float32, offsetof(FullScreenTriangle::Vertex, position) },
+        { "POSITION", 0, Format::R32G32_FLOAT, offsetof(FullScreenTriangle::Vertex, position) },
     };
     auto inputLayout = gDevice->createInputLayout(
         &inputElements[0],
diff --git a/examples/triangle/main.cpp b/examples/triangle/main.cpp
index 0f6c31809..f182e0a0a 100644
--- a/examples/triangle/main.cpp
+++ b/examples/triangle/main.cpp
@@ -224,8 +224,8 @@ Slang::Result initialize()
     // First, we create an input layout:
     //
     InputElementDesc inputElements[] = {
-        { "POSITION", 0, Format::RGB_Float32, offsetof(Vertex, position) },
-        { "COLOR",    0, Format::RGB_Float32, offsetof(Vertex, color) },
+        { "POSITION", 0, Format::R32G32B32_FLOAT, offsetof(Vertex, position) },
+        { "COLOR",    0, Format::R32G32B32_FLOAT, offsetof(Vertex, color) },
     };
     auto inputLayout = gDevice->createInputLayout(
         &inputElements[0],