Vulkan-Hpp/samples/InputAttachment/InputAttachment.cpp
2020-05-18 14:05:51 +02:00

295 lines
14 KiB
C++

// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// VulkanHpp Samples : InputAttachment
// Use an input attachment to draw a yellow triangle
#include "../utils/geometries.hpp"
#include "../utils/math.hpp"
#include "../utils/shaders.hpp"
#include "../utils/utils.hpp"
#include "SPIRV/GlslangToSpv.h"
#include "vulkan/vulkan.hpp"
#include <iostream>
#include <thread>
static char const * AppName = "InputAttachment";
static char const * EngineName = "Vulkan.hpp";
static std::string vertexShaderText = R"(
#version 450
vec2 vertices[3];
void main()
{
vertices[0] = vec2(-1.0f, -1.0f);
vertices[1] = vec2( 1.0f, -1.0f);
vertices[2] = vec2( 0.0f, 1.0f);
gl_Position = vec4(vertices[gl_VertexIndex % 3], 0.0f, 1.0f);
}
)";
// Use subpassLoad to read from input attachment
static const char * fragmentShaderText = R"(
#version 450
layout (input_attachment_index = 0, set = 0, binding = 0) uniform subpassInput inputAttachment;
layout (location = 0) out vec4 outColor;
void main()
{
outColor = subpassLoad(inputAttachment);
}
)";
int main( int /*argc*/, char ** /*argv*/ )
{
try
{
vk::UniqueInstance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
vk::UniqueDebugUtilsMessengerEXT debugUtilsMessenger = vk::su::createDebugUtilsMessenger( instance );
#endif
vk::PhysicalDevice physicalDevice = instance->enumeratePhysicalDevices().front();
vk::FormatProperties formatProperties = physicalDevice.getFormatProperties( vk::Format::eR8G8B8A8Unorm );
if ( !( formatProperties.optimalTilingFeatures & vk::FormatFeatureFlagBits::eColorAttachment ) )
{
std::cout << "vk::Format::eR8G8B8A8Unorm format unsupported for input attachment\n";
exit( -1 );
}
vk::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 500, 500 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
vk::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, *surfaceData.surface );
vk::UniqueDevice device =
vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
vk::UniqueCommandPool commandPool = vk::su::createCommandPool( device, graphicsAndPresentQueueFamilyIndex.first );
vk::UniqueCommandBuffer commandBuffer = std::move( device
->allocateCommandBuffersUnique( vk::CommandBufferAllocateInfo(
commandPool.get(), vk::CommandBufferLevel::ePrimary, 1 ) )
.front() );
vk::Queue graphicsQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.first, 0 );
vk::Queue presentQueue = device->getQueue( graphicsAndPresentQueueFamilyIndex.second, 0 );
vk::su::SwapChainData swapChainData( physicalDevice,
device,
*surfaceData.surface,
surfaceData.extent,
vk::ImageUsageFlagBits::eColorAttachment |
vk::ImageUsageFlagBits::eTransferSrc,
vk::UniqueSwapchainKHR(),
graphicsAndPresentQueueFamilyIndex.first,
graphicsAndPresentQueueFamilyIndex.second );
/* VULKAN_KEY_START */
// Create a framebuffer with 2 attachments, one the color attachment the shaders render into, and the other an input
// attachment which will be cleared to yellow, and then used by the shaders to color the drawn triangle. Final
// result should be a yellow triangle
// Create the image that will be used as the input attachment
// The image for the color attachment is the presentable image already created as part of the SwapChainData
vk::UniqueImage inputImage = device->createImageUnique(
vk::ImageCreateInfo( vk::ImageCreateFlags(),
vk::ImageType::e2D,
swapChainData.colorFormat,
vk::Extent3D( surfaceData.extent, 1 ),
1,
1,
vk::SampleCountFlagBits::e1,
vk::ImageTiling::eOptimal,
vk::ImageUsageFlagBits::eInputAttachment | vk::ImageUsageFlagBits::eTransferDst ) );
vk::MemoryRequirements memoryRequirements = device->getImageMemoryRequirements( inputImage.get() );
uint32_t memoryTypeIndex = vk::su::findMemoryType(
physicalDevice.getMemoryProperties(), memoryRequirements.memoryTypeBits, vk::MemoryPropertyFlags() );
vk::UniqueDeviceMemory inputMemory =
device->allocateMemoryUnique( vk::MemoryAllocateInfo( memoryRequirements.size, memoryTypeIndex ) );
device->bindImageMemory( inputImage.get(), inputMemory.get(), 0 );
// Set the image layout to TRANSFER_DST_OPTIMAL to be ready for clear
commandBuffer->begin( vk::CommandBufferBeginInfo() );
vk::su::setImageLayout( commandBuffer,
inputImage.get(),
swapChainData.colorFormat,
vk::ImageLayout::eUndefined,
vk::ImageLayout::eTransferDstOptimal );
commandBuffer->clearColorImage(
inputImage.get(),
vk::ImageLayout::eTransferDstOptimal,
vk::ClearColorValue( std::array<float, 4>( { { 1.0f, 1.0f, 0.0f, 0.0f } } ) ),
vk::ImageSubresourceRange(
vk::ImageAspectFlagBits::eColor, 0, VK_REMAINING_MIP_LEVELS, 0, VK_REMAINING_ARRAY_LAYERS ) );
// Set the image layout to SHADER_READONLY_OPTIMAL for use by the shaders
vk::su::setImageLayout( commandBuffer,
inputImage.get(),
swapChainData.colorFormat,
vk::ImageLayout::eTransferDstOptimal,
vk::ImageLayout::eShaderReadOnlyOptimal );
vk::ComponentMapping componentMapping(
vk::ComponentSwizzle::eR, vk::ComponentSwizzle::eG, vk::ComponentSwizzle::eB, vk::ComponentSwizzle::eA );
vk::ImageViewCreateInfo imageViewCreateInfo(
vk::ImageViewCreateFlags(),
inputImage.get(),
vk::ImageViewType::e2D,
swapChainData.colorFormat,
componentMapping,
vk::ImageSubresourceRange( vk::ImageAspectFlagBits::eColor, 0, 1, 0, 1 ) );
vk::UniqueImageView inputAttachmentView = device->createImageViewUnique( imageViewCreateInfo );
vk::DescriptorSetLayoutBinding layoutBinding(
0, vk::DescriptorType::eInputAttachment, 1, vk::ShaderStageFlagBits::eFragment );
vk::UniqueDescriptorSetLayout descriptorSetLayout = device->createDescriptorSetLayoutUnique(
vk::DescriptorSetLayoutCreateInfo( vk::DescriptorSetLayoutCreateFlags(), 1, &layoutBinding ) );
vk::UniquePipelineLayout pipelineLayout = device->createPipelineLayoutUnique(
vk::PipelineLayoutCreateInfo( vk::PipelineLayoutCreateFlags(), 1, &descriptorSetLayout.get() ) );
vk::AttachmentDescription attachments[2] = {
// First attachment is the color attachment - clear at the beginning of the renderpass and transition layout to
// PRESENT_SRC_KHR at the end of renderpass
vk::AttachmentDescription( vk::AttachmentDescriptionFlags(),
swapChainData.colorFormat,
vk::SampleCountFlagBits::e1,
vk::AttachmentLoadOp::eClear,
vk::AttachmentStoreOp::eStore,
vk::AttachmentLoadOp::eDontCare,
vk::AttachmentStoreOp::eDontCare,
vk::ImageLayout::eUndefined,
vk::ImageLayout::ePresentSrcKHR ),
// Second attachment is input attachment. Once cleared it should have width*height yellow pixels.
// Doing a subpassLoad in the fragment shader should give the shader the color at the fragments x,y location from
// the input attachment
vk::AttachmentDescription( vk::AttachmentDescriptionFlags(),
swapChainData.colorFormat,
vk::SampleCountFlagBits::e1,
vk::AttachmentLoadOp::eLoad,
vk::AttachmentStoreOp::eDontCare,
vk::AttachmentLoadOp::eDontCare,
vk::AttachmentStoreOp::eDontCare,
vk::ImageLayout::eShaderReadOnlyOptimal,
vk::ImageLayout::eShaderReadOnlyOptimal )
};
vk::AttachmentReference colorReference( 0, vk::ImageLayout::eColorAttachmentOptimal );
vk::AttachmentReference inputReference( 1, vk::ImageLayout::eShaderReadOnlyOptimal );
vk::SubpassDescription subPass(
vk::SubpassDescriptionFlags(), vk::PipelineBindPoint::eGraphics, 1, &inputReference, 1, &colorReference );
vk::UniqueRenderPass renderPass = device->createRenderPassUnique(
vk::RenderPassCreateInfo( vk::RenderPassCreateFlags(), 2, attachments, 1, &subPass ) );
glslang::InitializeProcess();
vk::UniqueShaderModule vertexShaderModule =
vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eVertex, vertexShaderText );
vk::UniqueShaderModule fragmentShaderModule =
vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText );
glslang::FinalizeProcess();
std::vector<vk::UniqueFramebuffer> framebuffers = vk::su::createFramebuffers(
device, renderPass, swapChainData.imageViews, inputAttachmentView, surfaceData.extent );
vk::DescriptorPoolSize poolSize( vk::DescriptorType::eInputAttachment, 1 );
vk::UniqueDescriptorPool descriptorPool = device->createDescriptorPoolUnique(
vk::DescriptorPoolCreateInfo( vk::DescriptorPoolCreateFlagBits::eFreeDescriptorSet, 1, 1, &poolSize ) );
vk::UniqueDescriptorSet descriptorSet = std::move(
device->allocateDescriptorSetsUnique( vk::DescriptorSetAllocateInfo( *descriptorPool, 1, &*descriptorSetLayout ) )
.front() );
vk::DescriptorImageInfo inputImageInfo(
nullptr, inputAttachmentView.get(), vk::ImageLayout::eShaderReadOnlyOptimal );
vk::WriteDescriptorSet writeDescriptorSet(
descriptorSet.get(), 0, 0, 1, vk::DescriptorType::eInputAttachment, &inputImageInfo );
device->updateDescriptorSets( vk::ArrayProxy<const vk::WriteDescriptorSet>( 1, &writeDescriptorSet ), nullptr );
vk::UniquePipelineCache pipelineCache = device->createPipelineCacheUnique( vk::PipelineCacheCreateInfo() );
vk::UniquePipeline graphicsPipeline =
vk::su::createGraphicsPipeline( device,
pipelineCache,
std::make_pair( *vertexShaderModule, nullptr ),
std::make_pair( *fragmentShaderModule, nullptr ),
0,
{},
vk::FrontFace::eClockwise,
false,
pipelineLayout,
renderPass );
vk::UniqueSemaphore imageAcquiredSemaphore = device->createSemaphoreUnique( vk::SemaphoreCreateInfo() );
vk::ResultValue<uint32_t> result = device->acquireNextImage2KHR(
vk::AcquireNextImageInfoKHR( swapChainData.swapChain.get(), UINT64_MAX, imageAcquiredSemaphore.get(), {}, 1 ) );
assert( result.result == vk::Result::eSuccess );
uint32_t currentBuffer = result.value;
vk::ClearValue clearValue;
clearValue.color = vk::ClearColorValue( std::array<float, 4>( { { 0.2f, 0.2f, 0.2f, 0.2f } } ) );
commandBuffer->beginRenderPass( vk::RenderPassBeginInfo( renderPass.get(),
framebuffers[currentBuffer].get(),
vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ),
1,
&clearValue ),
vk::SubpassContents::eInline );
commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, graphicsPipeline.get() );
commandBuffer->bindDescriptorSets(
vk::PipelineBindPoint::eGraphics, pipelineLayout.get(), 0, descriptorSet.get(), nullptr );
commandBuffer->setViewport( 0,
vk::Viewport( 0.0f,
0.0f,
static_cast<float>( surfaceData.extent.width ),
static_cast<float>( surfaceData.extent.height ),
0.0f,
1.0f ) );
commandBuffer->setScissor( 0, vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ) );
commandBuffer->draw( 3, 1, 0, 0 );
commandBuffer->endRenderPass();
commandBuffer->end();
/* VULKAN_KEY_END */
vk::su::submitAndWait( device, graphicsQueue, commandBuffer );
presentQueue.presentKHR( vk::PresentInfoKHR( 0, nullptr, 1, &swapChainData.swapChain.get(), &currentBuffer ) );
std::this_thread::sleep_for( std::chrono::milliseconds( 1000 ) );
}
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;
}