lunarg 5

src/main.cpp

@@ -157,7 +157,32 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
     result = vkEnumeratePhysicalDevices(inst, &gpuCount, gpus.data());
     assert(!result && gpuCount >= 1);
 
-	/* Creating logical device(with SWAPCHAIN extension) + queues (todo insspect all gpus, not assuume 1st) */	
+	//Surface setup (requires Instance SURFACEs)
+	VkSurfaceKHR surface;
+	#ifdef _WIN32
+		VkWin32SurfaceCreateInfoKHR createInfo = {};
+		createInfo.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
+		createInfo.pNext = NULL;
+		createInfo.hinstance = hInstance;
+		createInfo.hwnd = hwnd;
+		result = vkCreateWin32SurfaceKHR(inst, &createInfo, NULL, &surface);
+	
+/*
+ *     #elif defined(VK_USE_PLATFORM_WAYLAND_KHR) 
+ *     VkWaylandSurfaceCreateInfoKHR createInfo = {};
+ *     createInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
+ *     createInfo.pNext = NULL;
+ *     createInfo.display = info.display;
+ *     createInfo.surface = info.window;
+ *    result= vkCreateWaylandSurfaceKHR(inst, &createInfo, NULL, &surface);
+ */
+ 	#endif
+ 	assert(result == VK_SUCCESS);
+
+	
+
+
+	/* Creating logical device(with SWAPCHAIN extension) + queues (todo insspect all gpus, not assume 1st) */	
 	VkDeviceQueueCreateInfo queueInfo = {};
 	uint32_t queueFamilyCount = 0;
 
@@ -169,16 +194,53 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
     vkGetPhysicalDeviceQueueFamilyProperties(gpus[0], &queueFamilyCount, queueProperties.data());
     assert(queueFamilyCount >= 1);
 
-    bool found = false; //U_ASSERT_ONLY
+	// Iterate over each queue to learn whether it supports Presenting
-    for (unsigned int i = 0; i < queueFamilyCount; i++) {
+	VkBool32 *pSupportsPresent = (VkBool32 *) malloc(queueFamilyCount * sizeof(VkBool32));
-        if (queueProperties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+	for (uint32_t i = 0; i < queueFamilyCount; i++) {
-            queueInfo.queueFamilyIndex = i;
+		vkGetPhysicalDeviceSurfaceSupportKHR(gpus[0], i, surface, &pSupportsPresent[i]);
-            found = true;
+	}
-            break;
+
-        }
+	//Look for graphics & present support in queue families. Also store graphics queue family to create queue
-    }
+    /*
-    assert(found);
+	 * bool found = false; //U_ASSERT_ONLY
-    assert(queueFamilyCount >= 1);
+     * for (unsigned int i = 0; i < queueFamilyCount; i++) {
+     *     if (queueProperties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+     *         queuequeueFamilyIndex = i;
+     *         found = true;
+     *         break;
+     *     }
+     * }
+     * assert(found);
+	 */
+
+	uint32_t graphicsQueueFamilyIndex = UINT32_MAX;
+	uint32_t presentQueueFamilyIndex  = UINT32_MAX;
+	for (uint32_t i = 0; i < queueFamilyCount; ++i) {
+		if (queueProperties[i].queueFlags & VK_QUEUE_GRAPHICS_BIT) {
+			if (graphicsQueueFamilyIndex == UINT32_MAX)
+				graphicsQueueFamilyIndex = i;
+
+			if (pSupportsPresent[i] == VK_TRUE) {
+				graphicsQueueFamilyIndex = i;
+				presentQueueFamilyIndex = i;
+				break;
+			}
+		}
+	}
+
+	if (presentQueueFamilyIndex == UINT32_MAX) {
+		// If didn't find a queue that supports both graphics and present, then
+		// find a separate present queue.
+		for (size_t i = 0; i < queueFamilyCount; ++i)
+			if (pSupportsPresent[i] == VK_TRUE) {
+				presentQueueFamilyIndex = i;
+				break;
+			}
+	}
+	
+	free(pSupportsPresent);
+    assert(queueFamilyCount >= 1 && presentQueueFamilyIndex != UINT32_MAX &&
+		   graphicsQueueFamilyIndex != UINT32_MAX);
 
     float queuePriorities[1] = {0.0};
     queueInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO;
@@ -208,7 +270,7 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
 	VkCommandPoolCreateInfo cmdPoolInfo = {};
 	cmdPoolInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO;
 	cmdPoolInfo.pNext = NULL;
-	cmdPoolInfo.queueFamilyIndex = queueInfo.queueFamilyIndex; //u sure bro????
+	cmdPoolInfo.queueFamilyIndex = graphicsQueueFamilyIndex; 
 	cmdPoolInfo.flags = 0;
 
 	result = vkCreateCommandPool(device, &cmdPoolInfo,  NULL, &cmdPool);
@@ -216,8 +278,8 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
 
 	VkCommandBuffer cmd;
 	VkCommandBufferAllocateInfo cmdInfo = {};
-	cmdInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;
 	cmdInfo.pNext = NULL;
+	cmdInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO;;
 	cmdInfo.commandPool = cmdPool;
 	cmdInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY;
 	cmdInfo.commandBufferCount = 1;
@@ -225,31 +287,172 @@ int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int n
 	result = vkAllocateCommandBuffers(device, &cmdInfo, &cmd);
 	assert(result == VK_SUCCESS);
 
-	//Swapchain setup (requires Instance SURFACEs and Device SWAPCHAIN extensions)
+  
+	// Setting surface format
+	VkFormat format;
+	// Get the list of VkFormats that are supported:
+    uint32_t formatCount;
+    result = vkGetPhysicalDeviceSurfaceFormatsKHR(gpus[0], surface, &formatCount, NULL);
+    assert(result == VK_SUCCESS);
+    VkSurfaceFormatKHR *surfFormats = (VkSurfaceFormatKHR *)malloc(formatCount * sizeof(VkSurfaceFormatKHR));
+    result = vkGetPhysicalDeviceSurfaceFormatsKHR(gpus[0], surface, &formatCount, surfFormats);
+    assert(result == VK_SUCCESS);
+    // If the format list includes just one entry of VK_FORMAT_UNDEFINED,
+    // the surface has no preferred format.  Otherwise, at least one
+    // supported format will be returned.
+    if (formatCount == 1 && surfFormats[0].format == VK_FORMAT_UNDEFINED) {
+        format = VK_FORMAT_B8G8R8A8_UNORM;
+    } else {
+        assert(formatCount >= 1);
+        format = surfFormats[0].format;
+    }
+    free(surfFormats);
+
+	//Surface capabilities and present modes
+    
+    uint32_t presentModeCount;
+    result = vkGetPhysicalDeviceSurfacePresentModesKHR(gpus[0], surface, &presentModeCount, NULL);
+    assert(result == VK_SUCCESS); //free?
+    VkPresentModeKHR *presentModes = (VkPresentModeKHR *)malloc(presentModeCount * sizeof(VkPresentModeKHR));
+    result = vkGetPhysicalDeviceSurfacePresentModesKHR(gpus[0], surface, &presentModeCount, presentModes);
+    assert(result == VK_SUCCESS);
+	// The FIFO present mode is guaranteed by the spec to be supported, so it is hardcoded
+    VkPresentModeKHR swapchainPresentMode = VK_PRESENT_MODE_FIFO_KHR;
+
+	VkSurfaceCapabilitiesKHR surfCapabilities;
+	result = vkGetPhysicalDeviceSurfaceCapabilitiesKHR(gpus[0], surface, &surfCapabilities);
+    assert(result == VK_SUCCESS);
+    VkExtent2D swapchainExtent;
+    // width and height are either both 0xFFFFFFFF, or both not 0xFFFFFFFF.
+    if (surfCapabilities.currentExtent.width == 0xFFFFFFFF) {
+        // If the surface size is undefined, the size is set to
+        // the size of the images requested.
+        swapchainExtent.width = 100;
+        swapchainExtent.height = 100;
+        if (swapchainExtent.width < surfCapabilities.minImageExtent.width) {
+            swapchainExtent.width = surfCapabilities.minImageExtent.width;
+        } else if (swapchainExtent.width > surfCapabilities.maxImageExtent.width) {
+            swapchainExtent.width = surfCapabilities.maxImageExtent.width;
+        }
 	
-	VkSurfaceKHR surface;
+        if (swapchainExtent.height < surfCapabilities.minImageExtent.height) {
-	#ifdef _WIN32
+            swapchainExtent.height = surfCapabilities.minImageExtent.height;
-		VkWin32SurfaceCreateInfoKHR createInfo = {};
+        } else if (swapchainExtent.height > surfCapabilities.maxImageExtent.height) {
-		createInfo.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
+            swapchainExtent.height = surfCapabilities.maxImageExtent.height;
-		createInfo.pNext = NULL;
+        }
-		createInfo.hinstance = hInstance;
+    } else {
-		createInfo.hwnd = hwnd;
+        // If the surface size is defined, the swap chain size must match
-		result = vkCreateWin32SurfaceKHR(inst, &createInfo, NULL, &surface);
+        swapchainExtent = surfCapabilities.currentExtent;
-	
+    }
-/*
- *     #elif defined(VK_USE_PLATFORM_WAYLAND_KHR) 
- *     VkWaylandSurfaceCreateInfoKHR createInfo = {};
- *     createInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
- *     createInfo.pNext = NULL;
- *     createInfo.display = info.display;
- *     createInfo.surface = info.window;
- *     res = vkCreateWaylandSurfaceKHR(inst, &createInfo, NULL, &surface);
- */
- 	#endif
- 	assert(result == VK_SUCCESS);
- 
 	
 	
+    // Determine the number of VkImage's to use in the swap chain.
+    // We need to acquire only 1 presentable image at at time.
+    // Asking for minImageCount images ensures that we can acquire
+    // 1 presentable image as long as we present it before attempting
+    // to acquire another.
+    uint32_t desiredNumberOfSwapChainImages = surfCapabilities.minImageCount;
+	
+    VkSurfaceTransformFlagBitsKHR preTransform;
+    if (surfCapabilities.supportedTransforms & VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR) {
+        preTransform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
+    } else {
+        preTransform = surfCapabilities.currentTransform;
+    }
+	
+    // Find a supported composite alpha mode - one of these is guaranteed to be set
+    VkCompositeAlphaFlagBitsKHR compositeAlpha = VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR;
+    VkCompositeAlphaFlagBitsKHR compositeAlphaFlags[4] = {
+        VK_COMPOSITE_ALPHA_OPAQUE_BIT_KHR,
+        VK_COMPOSITE_ALPHA_PRE_MULTIPLIED_BIT_KHR,
+        VK_COMPOSITE_ALPHA_POST_MULTIPLIED_BIT_KHR,
+        VK_COMPOSITE_ALPHA_INHERIT_BIT_KHR,
+    }; 
+    for (uint32_t i = 0; i < sizeof(compositeAlphaFlags) / sizeof(compositeAlphaFlags[0]); i++) {
+        if (surfCapabilities.supportedCompositeAlpha & compositeAlphaFlags[i]) {
+            compositeAlpha = compositeAlphaFlags[i];
+            break;
+        }
+    }
+
+	VkSwapchainKHR swapchain;
+    VkSwapchainCreateInfoKHR swapchainCreateInfo = {};
+    swapchainCreateInfo.sType = VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
+    swapchainCreateInfo.pNext = NULL;
+    swapchainCreateInfo.surface = surface;
+    swapchainCreateInfo.minImageCount = desiredNumberOfSwapChainImages;
+    swapchainCreateInfo.imageFormat = format;
+    swapchainCreateInfo.imageExtent.width = swapchainExtent.width;
+    swapchainCreateInfo.imageExtent.height = swapchainExtent.height;
+    swapchainCreateInfo.preTransform = preTransform;
+    swapchainCreateInfo.compositeAlpha = compositeAlpha;
+    swapchainCreateInfo.imageArrayLayers = 1;
+    swapchainCreateInfo.presentMode = swapchainPresentMode;
+    swapchainCreateInfo.oldSwapchain = VK_NULL_HANDLE;
+    swapchainCreateInfo.clipped = true;
+    swapchainCreateInfo.imageColorSpace = VK_COLORSPACE_SRGB_NONLINEAR_KHR;
+    swapchainCreateInfo.imageUsage = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
+    swapchainCreateInfo.imageSharingMode = VK_SHARING_MODE_EXCLUSIVE;
+    swapchainCreateInfo.queueFamilyIndexCount = 0;
+    swapchainCreateInfo.pQueueFamilyIndices = NULL;
+    uint32_t queueFamilyIndices[2] = {(uint32_t)graphicsQueueFamilyIndex, (uint32_t)presentQueueFamilyIndex};
+    if (graphicsQueueFamilyIndex != presentQueueFamilyIndex) {
+        // If the graphics and present queues are from different queue families,
+        // we either have to explicitly transfer ownership of images between
+        // the queues, or we have to create the swapchain with imageSharingMode
+        // as VK_SHARING_MODE_CONCURRENT
+        swapchainCreateInfo.imageSharingMode = VK_SHARING_MODE_CONCURRENT;
+        swapchainCreateInfo.queueFamilyIndexCount = 2;
+        swapchainCreateInfo.pQueueFamilyIndices = queueFamilyIndices;
+    }
+	
+    result = vkCreateSwapchainKHR(device, &swapchainCreateInfo, NULL, &swapchain);
+    assert(result == VK_SUCCESS);
+	
+	uint32_t swapchainImageCount;
+    result = vkGetSwapchainImagesKHR(device, swapchain, &swapchainImageCount, NULL);
+    assert(result == VK_SUCCESS);
+	
+    VkImage *swapchainImages = (VkImage *)malloc(swapchainImageCount * sizeof(VkImage));
+    assert(swapchainImages);
+    result = vkGetSwapchainImagesKHR(device, swapchain, &swapchainImageCount, swapchainImages);
+    assert(result == VK_SUCCESS);
+
+	typedef struct _swap_chain_buffers {
+		VkImage image;
+		VkImageView view;
+	} swap_chain_buffer;
+
+	std::vector<swap_chain_buffer> buffers;
+    buffers.resize(swapchainImageCount);
+    for (uint32_t i = 0; i < swapchainImageCount; i++) {
+        buffers[i].image = swapchainImages[i];
+    }
+    free(swapchainImages);
+	
+    for (uint32_t i = 0; i < swapchainImageCount; i++) {
+        VkImageViewCreateInfo color_image_view = {};
+        color_image_view.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
+        color_image_view.pNext = NULL;
+        color_image_view.flags = 0;
+        color_image_view.image = buffers[i].image;
+        color_image_view.viewType = VK_IMAGE_VIEW_TYPE_2D;
+        color_image_view.format = format;
+        color_image_view.components.r = VK_COMPONENT_SWIZZLE_R;
+        color_image_view.components.g = VK_COMPONENT_SWIZZLE_G;
+        color_image_view.components.b = VK_COMPONENT_SWIZZLE_B;
+        color_image_view.components.a = VK_COMPONENT_SWIZZLE_A;
+        color_image_view.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
+        color_image_view.subresourceRange.baseMipLevel = 0;
+        color_image_view.subresourceRange.levelCount = 1;
+        color_image_view.subresourceRange.baseArrayLayer = 0;
+        color_image_view.subresourceRange.layerCount = 1;
+	
+        result = vkCreateImageView(device, &color_image_view, NULL, &buffers[i].view);
+        assert(result == VK_SUCCESS);
+    }
+	
+
 	
 	//Window show and event loop