Vulkan-Hpp/RAII_Samples/TexelBuffer/TexelBuffer.cpp
2021-02-22 16:19:12 +01:00

247 lines
11 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 : TexelBuffer
// Use a texel buffer to draw a green triangle.
#include "../../samples/utils/geometries.hpp"
#include "../../samples/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 = "TexelBuffer";
static char const * EngineName = "Vulkan.hpp";
static const std::string vertexShaderText = R"(
#version 400
#extension GL_ARB_separate_shader_objects : enable
#extension GL_ARB_shading_language_420pack : enable
layout (binding = 0) uniform samplerBuffer texels;
layout (location = 0) out vec4 outColor;
vec2 vertices[3];
void main()
{
float r = texelFetch(texels, 0).r;
float g = texelFetch(texels, 1).r;
float b = texelFetch(texels, 2).r;
outColor = vec4(r, g, b, 1.0);
vertices[0] = vec2(-1.0, -1.0);
vertices[1] = vec2( 1.0, -1.0);
vertices[2] = vec2( 0.0, 1.0);
gl_Position = vec4(vertices[gl_VertexIndex % 3], 0.0, 1.0);
}
)";
int main( int /*argc*/, char ** /*argv*/ )
{
const float texels[] = { 118.0f / 255.0f, 185.0f / 255.0f, 0.0f };
try
{
std::unique_ptr<vk::raii::Context> context = vk::raii::su::make_unique<vk::raii::Context>();
std::unique_ptr<vk::raii::Instance> instance =
vk::raii::su::makeUniqueInstance( *context, AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
std::unique_ptr<vk::raii::DebugUtilsMessengerEXT> debugUtilsMessenger =
vk::raii::su::makeUniqueDebugUtilsMessengerEXT( *instance );
#endif
std::unique_ptr<vk::raii::PhysicalDevice> physicalDevice = vk::raii::su::makeUniquePhysicalDevice( *instance );
vk::PhysicalDeviceProperties physicalDeviceProperties = physicalDevice->getProperties();
if ( physicalDeviceProperties.limits.maxTexelBufferElements < 4 )
{
std::cout << "maxTexelBufferElements too small\n";
exit( -1 );
}
vk::Format texelFormat = vk::Format::eR32Sfloat;
vk::FormatProperties formatProperties = physicalDevice->getFormatProperties( texelFormat );
if ( !( formatProperties.bufferFeatures & vk::FormatFeatureFlagBits::eUniformTexelBuffer ) )
{
std::cout << "R32_SFLOAT format unsupported for texel buffer\n";
exit( -1 );
}
vk::raii::su::SurfaceData surfaceData( *instance, AppName, vk::Extent2D( 500, 500 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
vk::raii::su::findGraphicsAndPresentQueueFamilyIndex( *physicalDevice, *surfaceData.surface );
std::unique_ptr<vk::raii::Device> device = vk::raii::su::makeUniqueDevice(
*physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
std::unique_ptr<vk::raii::CommandPool> commandPool =
vk::raii::su::makeUniqueCommandPool( *device, graphicsAndPresentQueueFamilyIndex.first );
std::unique_ptr<vk::raii::CommandBuffer> commandBuffer =
vk::raii::su::makeUniqueCommandBuffer( *device, *commandPool );
std::unique_ptr<vk::raii::Queue> graphicsQueue =
vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.first, 0 );
std::unique_ptr<vk::raii::Queue> presentQueue =
vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.second, 0 );
vk::raii::su::SwapChainData swapChainData( *physicalDevice,
*device,
*surfaceData.surface,
surfaceData.extent,
vk::ImageUsageFlagBits::eColorAttachment |
vk::ImageUsageFlagBits::eTransferSrc,
{},
graphicsAndPresentQueueFamilyIndex.first,
graphicsAndPresentQueueFamilyIndex.second );
vk::raii::su::BufferData texelBufferData(
*physicalDevice, *device, sizeof( texels ), vk::BufferUsageFlagBits::eUniformTexelBuffer );
texelBufferData.upload( texels );
vk::BufferViewCreateInfo bufferViewCreateInfo( {}, **texelBufferData.buffer, texelFormat, 0, sizeof( texels ) );
std::unique_ptr<vk::raii::BufferView> texelBufferView =
vk::raii::su::make_unique<vk::raii::BufferView>( *device, bufferViewCreateInfo );
std::unique_ptr<vk::raii::DescriptorSetLayout> descriptorSetLayout = vk::raii::su::makeUniqueDescriptorSetLayout(
*device, { { vk::DescriptorType::eUniformTexelBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
std::unique_ptr<vk::raii::PipelineLayout> pipelineLayout =
vk::raii::su::makeUniquePipelineLayout( *device, *descriptorSetLayout );
vk::Format colorFormat =
vk::su::pickSurfaceFormat( physicalDevice->getSurfaceFormatsKHR( **surfaceData.surface ) ).format;
std::unique_ptr<vk::raii::RenderPass> renderPass =
vk::raii::su::makeUniqueRenderPass( *device, colorFormat, vk::Format::eUndefined );
glslang::InitializeProcess();
std::unique_ptr<vk::raii::ShaderModule> vertexShaderModule =
vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eVertex, vertexShaderText );
std::unique_ptr<vk::raii::ShaderModule> fragmentShaderModule =
vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
glslang::FinalizeProcess();
std::vector<std::unique_ptr<vk::raii::Framebuffer>> framebuffers = vk::raii::su::makeUniqueFramebuffers(
*device, *renderPass, swapChainData.imageViews, std::unique_ptr<vk::raii::ImageView>(), surfaceData.extent );
std::unique_ptr<vk::raii::DescriptorPool> descriptorPool =
vk::raii::su::makeUniqueDescriptorPool( *device, { { vk::DescriptorType::eUniformTexelBuffer, 1 } } );
std::unique_ptr<vk::raii::DescriptorSet> descriptorSet =
vk::raii::su::makeUniqueDescriptorSet( *device, *descriptorPool, *descriptorSetLayout );
vk::raii::su::updateDescriptorSets(
*device,
*descriptorSet,
{ { vk::DescriptorType::eUniformTexelBuffer, *texelBufferData.buffer, &*texelBufferView } },
{} );
std::unique_ptr<vk::raii::PipelineCache> pipelineCache =
vk::raii::su::make_unique<vk::raii::PipelineCache>( *device, vk::PipelineCacheCreateInfo() );
std::unique_ptr<vk::raii::Pipeline> graphicsPipeline =
vk::raii::su::makeUniqueGraphicsPipeline( *device,
*pipelineCache,
*vertexShaderModule,
nullptr,
*fragmentShaderModule,
nullptr,
0,
{},
vk::FrontFace::eClockwise,
true,
*pipelineLayout,
*renderPass );
/* VULKAN_KEY_START */
// Get the index of the next available swapchain image:
std::unique_ptr<vk::raii::Semaphore> imageAcquiredSemaphore =
vk::raii::su::make_unique<vk::raii::Semaphore>( *device, vk::SemaphoreCreateInfo() );
vk::Result result;
uint32_t imageIndex;
std::tie( result, imageIndex ) =
swapChainData.swapChain->acquireNextImage( vk::su::FenceTimeout, **imageAcquiredSemaphore );
assert( result == vk::Result::eSuccess );
assert( imageIndex < swapChainData.images.size() );
commandBuffer->begin( vk::CommandBufferBeginInfo() );
vk::ClearValue clearValue;
clearValue.color = vk::ClearColorValue( std::array<float, 4>( { { 0.2f, 0.2f, 0.2f, 0.2f } } ) );
vk::RenderPassBeginInfo renderPassBeginInfo(
**renderPass, **framebuffers[imageIndex], vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ), clearValue );
commandBuffer->beginRenderPass( renderPassBeginInfo, vk::SubpassContents::eInline );
commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, **graphicsPipeline );
commandBuffer->bindDescriptorSets(
vk::PipelineBindPoint::eGraphics, **pipelineLayout, 0, { **descriptorSet }, 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();
std::unique_ptr<vk::raii::Fence> drawFence = vk::raii::su::make_unique<vk::raii::Fence>( *device, vk::FenceCreateInfo() );
vk::PipelineStageFlags waitDestinationStageMask( vk::PipelineStageFlagBits::eColorAttachmentOutput );
vk::SubmitInfo submitInfo( **imageAcquiredSemaphore, waitDestinationStageMask, **commandBuffer );
graphicsQueue->submit( submitInfo, **drawFence );
while ( vk::Result::eTimeout == device->waitForFences( { **drawFence }, VK_TRUE, vk::su::FenceTimeout ) )
;
vk::PresentInfoKHR presentInfoKHR( nullptr, **swapChainData.swapChain, imageIndex );
result = presentQueue->presentKHR( presentInfoKHR );
switch ( result )
{
case vk::Result::eSuccess: break;
case vk::Result::eSuboptimalKHR:
std::cout << "vk::Queue::presentKHR returned vk::Result::eSuboptimalKHR !\n";
break;
default: assert( false ); // an unexpected result is returned !
}
std::this_thread::sleep_for( std::chrono::milliseconds( 1000 ) );
/* VULKAN_KEY_END */
device->waitIdle();
}
catch ( vk::SystemError & err )
{
std::cout << "vk::SystemError: " << err.what() << std::endl;
exit( -1 );
}
catch ( std::exception & err )
{
std::cout << "std::exception: " << err.what() << std::endl;
exit( -1 );
}
catch ( ... )
{
std::cout << "unknown error\n";
exit( -1 );
}
return 0;
}