agpu_framebuffer *_agpu_framebuffer::create(agpu_device *device, agpu_uint width, agpu_uint height, agpu_uint colorCount, agpu_texture_view_description* colorViews, agpu_texture_view_description* depthStencilView)
{
agpu_framebuffer *result = nullptr;
// Attachments
std::vector<VkAttachmentDescription> attachments(colorCount + (depthStencilView != nullptr ? 1 : 0));
for (agpu_uint i = 0; i < colorCount; ++i)
{
auto view = &colorViews[i];
auto &attachment = attachments[i];
if (!view || !view->texture)
return nullptr;
attachment.format = mapTextureFormat(view->format);
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachment.initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
attachment.finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
}
if (depthStencilView != nullptr)
{
if (!depthStencilView->texture)
return nullptr;
auto &attachment = attachments.back();
attachment.format = mapTextureFormat(depthStencilView->format);
attachment.samples = VK_SAMPLE_COUNT_1_BIT;
attachment.loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
attachment.storeOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment.stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
attachment.stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
attachment.initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
attachment.finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
}
// Color reference
std::vector<VkAttachmentReference> colorReference(colorCount);
for (agpu_uint i = 0; i < colorCount; ++i)
{
colorReference[i].attachment = i;
colorReference[i].layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
}
// Depth reference
VkAttachmentReference depthReference;
memset(&depthReference, 0, sizeof(depthReference));
depthReference.attachment = colorCount;
depthReference.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
// Sub pass
VkSubpassDescription subpass;
memset(&subpass, 0, sizeof(subpass));
subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
subpass.colorAttachmentCount = colorCount;
subpass.pColorAttachments = &colorReference[0];
subpass.pDepthStencilAttachment = &depthReference;
if (!depthStencilView)
subpass.pDepthStencilAttachment = nullptr;
// Render pass
VkRenderPassCreateInfo renderPassCreateInfo;
memset(&renderPassCreateInfo, 0, sizeof(renderPassCreateInfo));
renderPassCreateInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
renderPassCreateInfo.attachmentCount = attachments.size();
renderPassCreateInfo.pAttachments = &attachments[0];
renderPassCreateInfo.subpassCount = 1;
renderPassCreateInfo.pSubpasses = &subpass;
VkRenderPass renderPass;
auto error = vkCreateRenderPass(device->device, &renderPassCreateInfo, nullptr, &renderPass);
if (error)
return nullptr;
// Create the framebuffer
std::vector<VkImageView> attachmentViews(attachments.size());
for (agpu_uint i = 0; i < colorCount; ++i)
{
auto view = agpu_texture::createImageView(device, &colorViews[i]);
if (!view)
goto failure;
attachmentViews[i] = view;
}
if (depthStencilView)
{
auto view = agpu_texture::createImageView(device, depthStencilView);
if (!view)
goto failure;
attachmentViews.back() = view;
}
VkFramebufferCreateInfo createInfo;
memset(&createInfo, 0, sizeof(createInfo));
createInfo.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
createInfo.attachmentCount = attachmentViews.size();
createInfo.pAttachments = &attachmentViews[0];
createInfo.renderPass = renderPass;
createInfo.width = width;
createInfo.height = height;
createInfo.layers = 1;
VkFramebuffer framebuffer;
error = vkCreateFramebuffer(device->device, &createInfo, nullptr, &framebuffer);
if (error)
goto failure;
result = new agpu_framebuffer(device);
result->colorCount = colorCount;
result->hasDepthStencil = depthStencilView != nullptr;
result->width = width;
result->height = height;
result->renderPass = renderPass;
result->framebuffer = framebuffer;
result->attachmentViews = attachmentViews;
result->attachmentTextures.resize(attachmentViews.size());
for (agpu_uint i = 0; i < colorCount; ++i)
{
auto texture = colorViews[i].texture;
texture->retain();
result->attachmentTextures[i] = texture;
}
if (depthStencilView)
{
auto texture = depthStencilView->texture;
texture->retain();
result->attachmentTextures.back() = texture;
}
return result;
failure:
vkDestroyRenderPass(device->device, renderPass, nullptr);
for (auto view : attachmentViews)
{
if (view)
vkDestroyImageView(device->device, view, nullptr);
}
return nullptr;
}
int main(int /*argc*/, char ** /*argv*/)
{
try
{
vk::UniqueInstance instance = vk::su::createInstance(AppName, EngineName, vk::su::getInstanceExtensions());
#if !defined(NDEBUG)
vk::UniqueDebugReportCallbackEXT debugReportCallback = vk::su::createDebugReportCallback(instance);
#endif
std::vector<vk::PhysicalDevice> physicalDevices = instance->enumeratePhysicalDevices();
assert(!physicalDevices.empty());
vk::su::SurfaceData surfaceData(instance, AppName, AppName, vk::Extent2D(64, 64));
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex = vk::su::findGraphicsAndPresentQueueFamilyIndex(physicalDevices[0], surfaceData.surface);
vk::UniqueDevice device = vk::su::createDevice(physicalDevices[0], graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions());
vk::Format colorFormat = vk::su::pickColorFormat(physicalDevices[0].getSurfaceFormatsKHR(surfaceData.surface.get()));
vk::Format depthFormat = vk::Format::eD16Unorm;
/* VULKAN_HPP_KEY_START */
vk::AttachmentDescription attachmentDescriptions[2];
attachmentDescriptions[0] = vk::AttachmentDescription(vk::AttachmentDescriptionFlags(), colorFormat, vk::SampleCountFlagBits::e1, vk::AttachmentLoadOp::eClear,
vk::AttachmentStoreOp::eStore, vk::AttachmentLoadOp::eDontCare, vk::AttachmentStoreOp::eDontCare, vk::ImageLayout::eUndefined, vk::ImageLayout::ePresentSrcKHR);
attachmentDescriptions[1] = vk::AttachmentDescription(vk::AttachmentDescriptionFlags(), depthFormat, vk::SampleCountFlagBits::e1, vk::AttachmentLoadOp::eClear,
vk::AttachmentStoreOp::eDontCare, vk::AttachmentLoadOp::eDontCare, vk::AttachmentStoreOp::eDontCare, vk::ImageLayout::eUndefined, vk::ImageLayout::eDepthStencilAttachmentOptimal);
vk::AttachmentReference colorReference(0, vk::ImageLayout::eColorAttachmentOptimal);
vk::AttachmentReference depthReference(1, vk::ImageLayout::eDepthStencilAttachmentOptimal);
vk::SubpassDescription subpass(vk::SubpassDescriptionFlags(), vk::PipelineBindPoint::eGraphics, 0, nullptr, 1, &colorReference, nullptr, &depthReference);
vk::UniqueRenderPass renderPass = device->createRenderPassUnique(vk::RenderPassCreateInfo(vk::RenderPassCreateFlags(), 2, attachmentDescriptions, 1, &subpass));
// Note: No need to explicitly destroy the RenderPass or the Semaphore, as the corresponding destroy
// functions are called by the destructor of the UniqueRenderPass and the UniqueSemaphore on leaving this scope.
/* VULKAN_HPP_KEY_END */
#if defined(VK_USE_PLATFORM_WIN32_KHR)
DestroyWindow(surfaceData.window);
#else
#pragma error "unhandled platform"
#endif
}
catch (vk::SystemError err)
{
std::cout << "vk::SystemError: " << err.what() << std::endl;
exit(-1);
}
catch (std::runtime_error err)
{
std::cout << "std::runtime_error: " << err.what() << std::endl;
exit(-1);
}
catch (...)
{
std::cout << "unknown error\n";
exit(-1);
}
return 0;
}
