Feature/vulkan first render (#545)

* First pass at InputLayout for Vulkan
Add support for RGBA_Float32

* Use VulkanModule and VulkanApi to handle accessing Vulkan types.

* First pass at Vulkan swap chain/Device queue.

* Added VulkanUtil for generic function functions.

* Move more functionality to VulkanApi and VulkanUtil.
Make Buffer able to initialize itself.

* More tidy up around VulkanDeviceQueue

* First pass use of VulkanDeviceQueue in VkRenderer

* First pass use of VulkanSwapChain on VkRenderer

* Added depth formats.
Binding for constant and vertex buffers for Vulkan.

* Setting up VkImageView on backbuffers.

* First pass support for setting up vkRenderPass.

* Fixes to work around Vulkan swap chain/verification issues.

* Added support for Pipeline and a pipeline cache.

* Working without waiting - because use of pipeline cache.

* Added support for VkFramebuffer in Vulkan.

* First pass at creating Vulkan graphics pipeline.

* More efforts to get Vulkan to render.

* Small improvement for checking of Binding flags.

* Removed setConstantBuffers from the Renderer interface - so that all resource binding takes place through the BindingState.
To make this work required a 'hack' in render-test main.cpp - so that the constant buffer binding that is needed in some tests is only added when it doesn't clash.

* RendererID -> unified into RendererType. Added getRendererType to Renderer interface.
Added ProjectionStyle, and function to get from RendererType.
Added getIdentityProjection to RendererUtil - to get projection that is the 'identity' - but hits the same pixels for all projection styles.

* Fix build problem on Win32 on Vulkan where should use VK_NULL_HANDLE.

* Improve naming, comments. Remove dead code.

* Remove unwanted comment.

1 files changed, 75 insertions, 0 deletions

diff --git a/tools/render-test/vk-module.cpp b/tools/render-test/vk-module.cpp
new file mode 100644
index 000000000..a10333584
--- /dev/null
+++ b/tools/render-test/vk-module.cpp
@@ -0,0 +1,75 @@
+// module.cpp
+#include "vk-module.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#if SLANG_WINDOWS_FAMILY 
+#   include <windows.h>
+#else
+#   include <dlfcn.h>
+#endif
+
+namespace renderer_test {
+using namespace Slang;
+
+// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! VulkanModule !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+Slang::Result VulkanModule::init()
+{
+    if (isInitialized())
+    {
+        destroy();
+        return SLANG_OK;
+    }
+
+    const char* dynamicLibraryName = "Unknown";
+
+#if SLANG_WINDOWS_FAMILY
+    dynamicLibraryName = "vulkan-1.dll";
+    HMODULE module = ::LoadLibraryA(dynamicLibraryName);    
+    m_module = (void*)module;    
+#else
+    dynamicLibraryName = "libvulkan.so.1";
+    m_module = dlopen(dynamicLibraryName, RTLD_NOW);
+#endif
+
+    if (!m_module)
+    {
+        fprintf(stderr, "error: failed load '%s'\n", dynamicLibraryName);
+        return SLANG_FAIL;
+    }
+
+    return SLANG_OK;
+}
+
+PFN_vkVoidFunction VulkanModule::getFunction(const char* name) const
+{
+    assert(m_module);
+    if (!m_module)
+    {
+        return nullptr;
+    }
+#if SLANG_WINDOWS_FAMILY
+    return (PFN_vkVoidFunction)::GetProcAddress((HMODULE)m_module, name);
+#else 
+    return (PFN_vkVoidFunction)dlsym(m_module, name);
+#endif
+}
+
+void VulkanModule::destroy()
+{
+    if (!isInitialized())
+    {
+        return;
+    }
+
+#if SLANG_WINDOWS_FAMILY 
+    ::FreeLibrary((HMODULE)m_module); 
+#else
+    dlclose(m_module);
+#endif
+    m_module = nullptr;
+}
+
+} // renderer_test