From 0d4857ea576af2207b6debc965a242cdcadc1b15 Mon Sep 17 00:00:00 2001
From: Petr Kraus <petr_kraus@email.cz>
Date: Wed, 15 Apr 2020 00:29:33 +0200
Subject: icd: Make VkPhysicalDevice unique

---
 scripts/mock_icd_generator.py | 26 ++++++++++++++++++++------
 1 file changed, 20 insertions(+), 6 deletions(-)

(limited to 'scripts')

diff --git a/scripts/mock_icd_generator.py b/scripts/mock_icd_generator.py
index 0b1062cf..75227b48 100644
--- a/scripts/mock_icd_generator.py
+++ b/scripts/mock_icd_generator.py
@@ -54,18 +54,20 @@ static void DestroyDispObjHandle(void* handle) {
 SOURCE_CPP_PREFIX = '''
 using std::unordered_map;
 
+static constexpr uint32_t icd_physical_device_count = 1;
+static unordered_map<VkInstance, std::array<VkPhysicalDevice, icd_physical_device_count>> physical_device_map;
+
 // Map device memory handle to any mapped allocations that we'll need to free on unmap
 static unordered_map<VkDeviceMemory, std::vector<void*>> mapped_memory_map;
 
 // Map device memory allocation handle to the size
 static unordered_map<VkDeviceMemory, VkDeviceSize> allocated_memory_size_map;
 
-static VkPhysicalDevice physical_device = (VkPhysicalDevice)CreateDispObjHandle();
 static unordered_map<VkDevice, unordered_map<uint32_t, unordered_map<uint32_t, VkQueue>>> queue_map;
 static unordered_map<VkDevice, unordered_map<VkBuffer, VkBufferCreateInfo>> buffer_map;
 
 static constexpr uint32_t icd_swapchain_image_count = 1;
-static std::unordered_map<VkSwapchainKHR, VkImage[icd_swapchain_image_count]> swapchain_image_map;
+static unordered_map<VkSwapchainKHR, VkImage[icd_swapchain_image_count]> swapchain_image_map;
 
 // TODO: Would like to codegen this but limits aren't in XML
 static VkPhysicalDeviceLimits SetLimits(VkPhysicalDeviceLimits *limits) {
@@ -427,19 +429,30 @@ CUSTOM_C_INTERCEPTS = {
         return VK_ERROR_INCOMPATIBLE_DRIVER;
     }
     *pInstance = (VkInstance)CreateDispObjHandle();
+    for (auto& physical_device : physical_device_map[*pInstance])
+        physical_device = (VkPhysicalDevice)CreateDispObjHandle();
     // TODO: If emulating specific device caps, will need to add intelligence here
     return VK_SUCCESS;
 ''',
 'vkDestroyInstance': '''
-    DestroyDispObjHandle((void*)instance);
+    if (instance) {
+        for (const auto physical_device : physical_device_map.at(instance))
+            DestroyDispObjHandle((void*)physical_device);
+        physical_device_map.erase(instance);
+        DestroyDispObjHandle((void*)instance);
+    }
 ''',
 'vkEnumeratePhysicalDevices': '''
+    VkResult result_code = VK_SUCCESS;
     if (pPhysicalDevices) {
-        *pPhysicalDevices = physical_device;
+        const auto return_count = (std::min)(*pPhysicalDeviceCount, icd_physical_device_count);
+        for (uint32_t i = 0; i < return_count; ++i) pPhysicalDevices[i] = physical_device_map.at(instance)[i];
+        if (return_count < icd_physical_device_count) result_code = VK_INCOMPLETE;
+        *pPhysicalDeviceCount = return_count;
     } else {
-        *pPhysicalDeviceCount = 1;
+        *pPhysicalDeviceCount = icd_physical_device_count;
     }
-    return VK_SUCCESS;
+    return result_code;
 ''',
 'vkCreateDevice': '''
     *pDevice = (VkDevice)CreateDispObjHandle();
@@ -1093,6 +1106,7 @@ class MockICDOutputGenerator(OutputGenerator):
             write('#include "mock_icd.h"', file=self.outFile)
             write('#include <stdlib.h>', file=self.outFile)
             write('#include <algorithm>', file=self.outFile)
+            write('#include <array>', file=self.outFile)
             write('#include <vector>', file=self.outFile)
             write('#include "vk_typemap_helper.h"', file=self.outFile)
 
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