247 lines
11 KiB
C++
247 lines
11 KiB
C++
// Copyright(c) 2019, NVIDIA CORPORATION. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// VulkanHpp Samples : TexelBuffer
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// Use a texel buffer to draw a green triangle.
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#include "../../samples/utils/geometries.hpp"
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#include "../../samples/utils/math.hpp"
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#include "../utils/shaders.hpp"
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#include "../utils/utils.hpp"
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#include "SPIRV/GlslangToSpv.h"
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#include "vulkan/vulkan.hpp"
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#include <iostream>
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#include <thread>
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static char const * AppName = "TexelBuffer";
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static char const * EngineName = "Vulkan.hpp";
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static const std::string vertexShaderText = R"(
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#version 400
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#extension GL_ARB_separate_shader_objects : enable
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#extension GL_ARB_shading_language_420pack : enable
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layout (binding = 0) uniform samplerBuffer texels;
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layout (location = 0) out vec4 outColor;
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vec2 vertices[3];
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void main()
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{
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float r = texelFetch(texels, 0).r;
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float g = texelFetch(texels, 1).r;
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float b = texelFetch(texels, 2).r;
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outColor = vec4(r, g, b, 1.0);
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vertices[0] = vec2(-1.0, -1.0);
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vertices[1] = vec2( 1.0, -1.0);
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vertices[2] = vec2( 0.0, 1.0);
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gl_Position = vec4(vertices[gl_VertexIndex % 3], 0.0, 1.0);
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}
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)";
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int main( int /*argc*/, char ** /*argv*/ )
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{
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const float texels[] = { 118.0f / 255.0f, 185.0f / 255.0f, 0.0f };
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try
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{
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std::unique_ptr<vk::raii::Context> context = vk::raii::su::make_unique<vk::raii::Context>();
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std::unique_ptr<vk::raii::Instance> instance =
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vk::raii::su::makeUniqueInstance( *context, AppName, EngineName, {}, vk::su::getInstanceExtensions() );
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#if !defined( NDEBUG )
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std::unique_ptr<vk::raii::DebugUtilsMessengerEXT> debugUtilsMessenger =
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vk::raii::su::makeUniqueDebugUtilsMessengerEXT( *instance );
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#endif
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std::unique_ptr<vk::raii::PhysicalDevice> physicalDevice = vk::raii::su::makeUniquePhysicalDevice( *instance );
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vk::PhysicalDeviceProperties physicalDeviceProperties = physicalDevice->getProperties();
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if ( physicalDeviceProperties.limits.maxTexelBufferElements < 4 )
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{
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std::cout << "maxTexelBufferElements too small\n";
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exit( -1 );
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}
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vk::Format texelFormat = vk::Format::eR32Sfloat;
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vk::FormatProperties formatProperties = physicalDevice->getFormatProperties( texelFormat );
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if ( !( formatProperties.bufferFeatures & vk::FormatFeatureFlagBits::eUniformTexelBuffer ) )
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{
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std::cout << "R32_SFLOAT format unsupported for texel buffer\n";
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exit( -1 );
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}
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vk::raii::su::SurfaceData surfaceData( *instance, AppName, vk::Extent2D( 500, 500 ) );
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std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
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vk::raii::su::findGraphicsAndPresentQueueFamilyIndex( *physicalDevice, *surfaceData.surface );
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std::unique_ptr<vk::raii::Device> device = vk::raii::su::makeUniqueDevice(
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*physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
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std::unique_ptr<vk::raii::CommandPool> commandPool =
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vk::raii::su::makeUniqueCommandPool( *device, graphicsAndPresentQueueFamilyIndex.first );
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std::unique_ptr<vk::raii::CommandBuffer> commandBuffer =
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vk::raii::su::makeUniqueCommandBuffer( *device, *commandPool );
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std::unique_ptr<vk::raii::Queue> graphicsQueue =
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vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.first, 0 );
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std::unique_ptr<vk::raii::Queue> presentQueue =
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vk::raii::su::make_unique<vk::raii::Queue>( *device, graphicsAndPresentQueueFamilyIndex.second, 0 );
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vk::raii::su::SwapChainData swapChainData( *physicalDevice,
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*device,
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*surfaceData.surface,
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surfaceData.extent,
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vk::ImageUsageFlagBits::eColorAttachment |
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vk::ImageUsageFlagBits::eTransferSrc,
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{},
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graphicsAndPresentQueueFamilyIndex.first,
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graphicsAndPresentQueueFamilyIndex.second );
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vk::raii::su::BufferData texelBufferData(
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*physicalDevice, *device, sizeof( texels ), vk::BufferUsageFlagBits::eUniformTexelBuffer );
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texelBufferData.upload( texels );
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vk::BufferViewCreateInfo bufferViewCreateInfo( {}, **texelBufferData.buffer, texelFormat, 0, sizeof( texels ) );
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std::unique_ptr<vk::raii::BufferView> texelBufferView =
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vk::raii::su::make_unique<vk::raii::BufferView>( *device, bufferViewCreateInfo );
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std::unique_ptr<vk::raii::DescriptorSetLayout> descriptorSetLayout = vk::raii::su::makeUniqueDescriptorSetLayout(
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*device, { { vk::DescriptorType::eUniformTexelBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
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std::unique_ptr<vk::raii::PipelineLayout> pipelineLayout =
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vk::raii::su::makeUniquePipelineLayout( *device, *descriptorSetLayout );
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vk::Format colorFormat =
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vk::su::pickSurfaceFormat( physicalDevice->getSurfaceFormatsKHR( **surfaceData.surface ) ).format;
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std::unique_ptr<vk::raii::RenderPass> renderPass =
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vk::raii::su::makeUniqueRenderPass( *device, colorFormat, vk::Format::eUndefined );
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glslang::InitializeProcess();
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std::unique_ptr<vk::raii::ShaderModule> vertexShaderModule =
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vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eVertex, vertexShaderText );
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std::unique_ptr<vk::raii::ShaderModule> fragmentShaderModule =
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vk::raii::su::makeUniqueShaderModule( *device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
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glslang::FinalizeProcess();
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std::vector<std::unique_ptr<vk::raii::Framebuffer>> framebuffers = vk::raii::su::makeUniqueFramebuffers(
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*device, *renderPass, swapChainData.imageViews, std::unique_ptr<vk::raii::ImageView>(), surfaceData.extent );
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std::unique_ptr<vk::raii::DescriptorPool> descriptorPool =
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vk::raii::su::makeUniqueDescriptorPool( *device, { { vk::DescriptorType::eUniformTexelBuffer, 1 } } );
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std::unique_ptr<vk::raii::DescriptorSet> descriptorSet =
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vk::raii::su::makeUniqueDescriptorSet( *device, *descriptorPool, *descriptorSetLayout );
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vk::raii::su::updateDescriptorSets(
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*device,
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*descriptorSet,
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{ { vk::DescriptorType::eUniformTexelBuffer, *texelBufferData.buffer, &*texelBufferView } },
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{} );
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std::unique_ptr<vk::raii::PipelineCache> pipelineCache =
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vk::raii::su::make_unique<vk::raii::PipelineCache>( *device, vk::PipelineCacheCreateInfo() );
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std::unique_ptr<vk::raii::Pipeline> graphicsPipeline =
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vk::raii::su::makeUniqueGraphicsPipeline( *device,
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*pipelineCache,
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*vertexShaderModule,
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nullptr,
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*fragmentShaderModule,
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nullptr,
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0,
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{},
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vk::FrontFace::eClockwise,
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true,
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*pipelineLayout,
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*renderPass );
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/* VULKAN_KEY_START */
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// Get the index of the next available swapchain image:
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std::unique_ptr<vk::raii::Semaphore> imageAcquiredSemaphore =
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vk::raii::su::make_unique<vk::raii::Semaphore>( *device, vk::SemaphoreCreateInfo() );
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vk::Result result;
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uint32_t imageIndex;
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std::tie( result, imageIndex ) =
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swapChainData.swapChain->acquireNextImage( vk::su::FenceTimeout, **imageAcquiredSemaphore );
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assert( result == vk::Result::eSuccess );
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assert( imageIndex < swapChainData.images.size() );
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commandBuffer->begin( vk::CommandBufferBeginInfo() );
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vk::ClearValue clearValue;
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clearValue.color = vk::ClearColorValue( std::array<float, 4>( { { 0.2f, 0.2f, 0.2f, 0.2f } } ) );
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vk::RenderPassBeginInfo renderPassBeginInfo(
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**renderPass, **framebuffers[imageIndex], vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ), clearValue );
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commandBuffer->beginRenderPass( renderPassBeginInfo, vk::SubpassContents::eInline );
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commandBuffer->bindPipeline( vk::PipelineBindPoint::eGraphics, **graphicsPipeline );
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commandBuffer->bindDescriptorSets(
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vk::PipelineBindPoint::eGraphics, **pipelineLayout, 0, { **descriptorSet }, nullptr );
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commandBuffer->setViewport( 0,
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vk::Viewport( 0.0f,
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0.0f,
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static_cast<float>( surfaceData.extent.width ),
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static_cast<float>( surfaceData.extent.height ),
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0.0f,
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1.0f ) );
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commandBuffer->setScissor( 0, vk::Rect2D( vk::Offset2D( 0, 0 ), surfaceData.extent ) );
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commandBuffer->draw( 3, 1, 0, 0 );
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commandBuffer->endRenderPass();
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commandBuffer->end();
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std::unique_ptr<vk::raii::Fence> drawFence = vk::raii::su::make_unique<vk::raii::Fence>( *device, vk::FenceCreateInfo() );
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vk::PipelineStageFlags waitDestinationStageMask( vk::PipelineStageFlagBits::eColorAttachmentOutput );
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vk::SubmitInfo submitInfo( **imageAcquiredSemaphore, waitDestinationStageMask, **commandBuffer );
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graphicsQueue->submit( submitInfo, **drawFence );
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while ( vk::Result::eTimeout == device->waitForFences( { **drawFence }, VK_TRUE, vk::su::FenceTimeout ) )
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;
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vk::PresentInfoKHR presentInfoKHR( nullptr, **swapChainData.swapChain, imageIndex );
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result = presentQueue->presentKHR( presentInfoKHR );
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switch ( result )
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{
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case vk::Result::eSuccess: break;
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case vk::Result::eSuboptimalKHR:
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std::cout << "vk::Queue::presentKHR returned vk::Result::eSuboptimalKHR !\n";
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break;
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default: assert( false ); // an unexpected result is returned !
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}
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std::this_thread::sleep_for( std::chrono::milliseconds( 1000 ) );
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/* VULKAN_KEY_END */
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device->waitIdle();
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}
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catch ( vk::SystemError & err )
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{
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std::cout << "vk::SystemError: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( std::exception & err )
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{
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std::cout << "std::exception: " << err.what() << std::endl;
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exit( -1 );
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}
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catch ( ... )
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{
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std::cout << "unknown error\n";
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exit( -1 );
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}
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return 0;
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}
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