Vulkan-Hpp/samples/TexelBuffer/TexelBuffer.cpp
2024-03-19 09:08:53 +01:00

235 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 "../utils/geometries.hpp"
#include "../utils/math.hpp"
#include "../utils/shaders.hpp"
#include "../utils/utils.hpp"
#include "SPIRV/GlslangToSpv.h"
#include "glslang/Public/ShaderLang.h"
#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
{
vk::Instance instance = vk::su::createInstance( AppName, EngineName, {}, vk::su::getInstanceExtensions() );
#if !defined( NDEBUG )
vk::DebugUtilsMessengerEXT debugUtilsMessenger = instance.createDebugUtilsMessengerEXT( vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
#endif
vk::PhysicalDevice physicalDevice = instance.enumeratePhysicalDevices().front();
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::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 500, 500 ) );
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex = vk::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, surfaceData.surface );
vk::Device device = vk::su::createDevice( physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
vk::CommandPool commandPool = device.createCommandPool( { {}, graphicsAndPresentQueueFamilyIndex.first } );
vk::CommandBuffer commandBuffer =
device.allocateCommandBuffers( vk::CommandBufferAllocateInfo( commandPool, 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,
{},
graphicsAndPresentQueueFamilyIndex.first,
graphicsAndPresentQueueFamilyIndex.second );
vk::su::BufferData texelBufferData( physicalDevice, device, sizeof( texels ), vk::BufferUsageFlagBits::eUniformTexelBuffer );
texelBufferData.upload( device, texels );
vk::BufferView texelBufferView = device.createBufferView( vk::BufferViewCreateInfo( {}, texelBufferData.buffer, texelFormat, 0, sizeof( texels ) ) );
vk::DescriptorSetLayout descriptorSetLayout =
vk::su::createDescriptorSetLayout( device, { { vk::DescriptorType::eUniformTexelBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
vk::PipelineLayout pipelineLayout = device.createPipelineLayout( vk::PipelineLayoutCreateInfo( vk::PipelineLayoutCreateFlags(), descriptorSetLayout ) );
vk::RenderPass renderPass = vk::su::createRenderPass(
device, vk::su::pickSurfaceFormat( physicalDevice.getSurfaceFormatsKHR( surfaceData.surface ) ).format, vk::Format::eUndefined );
glslang::InitializeProcess();
vk::ShaderModule vertexShaderModule = vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eVertex, vertexShaderText );
vk::ShaderModule fragmentShaderModule = vk::su::createShaderModule( device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
glslang::FinalizeProcess();
std::vector<vk::Framebuffer> framebuffers = vk::su::createFramebuffers( device, renderPass, swapChainData.imageViews, vk::ImageView(), surfaceData.extent );
vk::DescriptorPool descriptorPool = vk::su::createDescriptorPool( device, { { vk::DescriptorType::eUniformTexelBuffer, 1 } } );
vk::DescriptorSetAllocateInfo descriptorSetAllocateInfo( descriptorPool, descriptorSetLayout );
vk::DescriptorSet descriptorSet = device.allocateDescriptorSets( descriptorSetAllocateInfo ).front();
vk::su::updateDescriptorSets(
device, descriptorSet, { { vk::DescriptorType::eUniformTexelBuffer, texelBufferData.buffer, VK_WHOLE_SIZE, texelBufferView } }, {} );
vk::PipelineCache pipelineCache = device.createPipelineCache( vk::PipelineCacheCreateInfo() );
vk::Pipeline graphicsPipeline = vk::su::createGraphicsPipeline( device,
pipelineCache,
std::make_pair( vertexShaderModule, nullptr ),
std::make_pair( fragmentShaderModule, nullptr ),
0,
{},
vk::FrontFace::eClockwise,
false,
pipelineLayout,
renderPass );
/* VULKAN_KEY_START */
// Get the index of the next available swapchain image:
vk::Semaphore imageAcquiredSemaphore = device.createSemaphore( vk::SemaphoreCreateInfo() );
vk::ResultValue<uint32_t> currentBuffer = device.acquireNextImageKHR( swapChainData.swapChain, vk::su::FenceTimeout, imageAcquiredSemaphore, nullptr );
assert( currentBuffer.result == vk::Result::eSuccess );
assert( currentBuffer.value < framebuffers.size() );
commandBuffer.begin( vk::CommandBufferBeginInfo() );
vk::ClearValue clearValue;
clearValue.color = vk::ClearColorValue( 0.2f, 0.2f, 0.2f, 0.2f );
vk::RenderPassBeginInfo renderPassBeginInfo(
renderPass, framebuffers[currentBuffer.value], 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();
vk::Fence drawFence = device.createFence( 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::Result result = presentQueue.presentKHR( vk::PresentInfoKHR( {}, swapChainData.swapChain, currentBuffer.value ) );
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();
device.destroyFence( drawFence );
device.destroySemaphore( imageAcquiredSemaphore );
device.destroyPipeline( graphicsPipeline );
device.destroyPipelineCache( pipelineCache );
device.freeDescriptorSets( descriptorPool, descriptorSet );
device.destroyDescriptorPool( descriptorPool );
for ( auto framebuffer : framebuffers )
{
device.destroyFramebuffer( framebuffer );
}
device.destroyShaderModule( fragmentShaderModule );
device.destroyShaderModule( vertexShaderModule );
device.destroyRenderPass( renderPass );
device.destroyPipelineLayout( pipelineLayout );
device.destroyDescriptorSetLayout( descriptorSetLayout );
device.destroyBufferView( texelBufferView );
texelBufferData.clear( device );
swapChainData.clear( device );
device.freeCommandBuffers( commandPool, commandBuffer );
device.destroyCommandPool( commandPool );
device.destroy();
instance.destroySurfaceKHR( surfaceData.surface );
#if !defined( NDEBUG )
instance.destroyDebugUtilsMessengerEXT( debugUtilsMessenger );
#endif
instance.destroy();
}
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;
}