1 files changed, 142 insertions, 0 deletions
diff --git a/tools/gfx/vulkan/vk-api.cpp b/tools/gfx/vulkan/vk-api.cpp
new file mode 100644
index 000000000..50f80aa26
--- /dev/null
+++ b/tools/gfx/vulkan/vk-api.cpp
@@ -0,0 +1,142 @@
+// vk-api.cpp
+#include "vk-api.h"
+
+#include "../../source/core/slang-list.h"
+
+namespace gfx {
+using namespace Slang;
+
+// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! VulkanApi !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+#define VK_API_CHECK_FUNCTION(x) && (x != nullptr)
+#define  VK_API_CHECK_FUNCTIONS(FUNCTION_LIST) true FUNCTION_LIST(VK_API_CHECK_FUNCTION)
+
+bool VulkanApi::areDefined(ProcType type) const
+{
+    switch (type)
+    {
+        case ProcType::Global:          return VK_API_CHECK_FUNCTIONS(VK_API_ALL_GLOBAL_PROCS);
+        case ProcType::Instance:        return VK_API_CHECK_FUNCTIONS(VK_API_ALL_INSTANCE_PROCS);
+        case ProcType::Device:          return VK_API_CHECK_FUNCTIONS(VK_API_ALL_DEVICE_PROCS);
+        default:
+        {
+            assert(!"Unhandled type");
+            return false;
+        }
+    }
+}
+
+Slang::Result VulkanApi::initGlobalProcs(const VulkanModule& module)
+{
+#define VK_API_GET_GLOBAL_PROC(x) x = (PFN_##x)module.getFunction(#x);
+
+    // Initialize all the global functions
+    VK_API_ALL_GLOBAL_PROCS(VK_API_GET_GLOBAL_PROC)
+
+    if (!areDefined(ProcType::Global))
+    {
+        return SLANG_FAIL;
+    }
+    m_module = &module;
+    return SLANG_OK;
+}
+
+Slang::Result VulkanApi::initInstanceProcs(VkInstance instance)
+{
+    assert(instance && vkGetInstanceProcAddr != nullptr);
+
+#define VK_API_GET_INSTANCE_PROC(x) x = (PFN_##x)vkGetInstanceProcAddr(instance, #x);
+
+    VK_API_ALL_INSTANCE_PROCS(VK_API_GET_INSTANCE_PROC)
+
+    // Get optional 
+    VK_API_INSTANCE_PROCS_OPT(VK_API_GET_INSTANCE_PROC)
+
+    if (!areDefined(ProcType::Instance))
+    {
+        return SLANG_FAIL;
+    }
+
+
+    m_instance = instance;
+    return SLANG_OK;
+}
+
+Slang::Result VulkanApi::initPhysicalDevice(VkPhysicalDevice physicalDevice)
+{
+    assert(m_physicalDevice == VK_NULL_HANDLE);
+    m_physicalDevice = physicalDevice;
+
+    vkGetPhysicalDeviceProperties(m_physicalDevice, &m_deviceProperties);
+    vkGetPhysicalDeviceFeatures(m_physicalDevice, &m_deviceFeatures);
+    vkGetPhysicalDeviceMemoryProperties(m_physicalDevice, &m_deviceMemoryProperties);
+
+    return SLANG_OK;
+}
+
+Slang::Result VulkanApi::initDeviceProcs(VkDevice device)
+{
+    assert(m_instance && device && vkGetDeviceProcAddr != nullptr);
+
+#define VK_API_GET_DEVICE_PROC(x) x = (PFN_##x)vkGetDeviceProcAddr(device, #x);
+
+    VK_API_ALL_DEVICE_PROCS(VK_API_GET_DEVICE_PROC)
+
+    if (!areDefined(ProcType::Device))
+    {
+        return SLANG_FAIL;
+    }
+
+    m_device = device;
+    return SLANG_OK;
+}
+
+int VulkanApi::findMemoryTypeIndex(uint32_t typeBits, VkMemoryPropertyFlags properties) const
+{
+    assert(typeBits);
+
+    const int numMemoryTypes = int(m_deviceMemoryProperties.memoryTypeCount);
+
+    // bit holds current test bit against typeBits. Ie bit == 1 << typeBits
+
+    uint32_t bit = 1;
+    for (int i = 0;  i < numMemoryTypes; ++i, bit += bit)
+    {
+        auto const& memoryType = m_deviceMemoryProperties.memoryTypes[i];
+        if ((typeBits & bit) && (memoryType.propertyFlags & properties) == properties)
+        {
+            return i;
+        }
+    }
+
+    //assert(!"failed to find a usable memory type");
+    return -1;
+}
+
+int VulkanApi::findQueue(VkQueueFlags reqFlags) const
+{
+    assert(m_physicalDevice != VK_NULL_HANDLE);
+
+    uint32_t numQueueFamilies = 0;
+    vkGetPhysicalDeviceQueueFamilyProperties(m_physicalDevice, &numQueueFamilies, nullptr);
+
+    Slang::List<VkQueueFamilyProperties> queueFamilies;
+    queueFamilies.setCount(numQueueFamilies);
+    vkGetPhysicalDeviceQueueFamilyProperties(m_physicalDevice, &numQueueFamilies, queueFamilies.getBuffer());
+
+    // Find a queue that can service our needs
+    //VkQueueFlags reqQueueFlags = VK_QUEUE_GRAPHICS_BIT | VK_QUEUE_COMPUTE_BIT;
+
+    int queueFamilyIndex = -1;
+    for (int i = 0; i < int(numQueueFamilies); ++i)
+    {
+        if ((queueFamilies[i].queueFlags & reqFlags) == reqFlags)
+        {
+            return i;
+        }
+    }
+
+    return -1;
+}
+
+} // renderer_test