mirror of
https://github.com/KhronosGroup/Vulkan-Hpp
synced 2024-11-29 15:11:05 +00:00
237 lines
10 KiB
C++
237 lines
10 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
|
|
{
|
|
vk::raii::Context context;
|
|
vk::raii::Instance instance =
|
|
vk::raii::su::makeInstance( context, AppName, EngineName, {}, vk::su::getInstanceExtensions() );
|
|
#if !defined( NDEBUG )
|
|
vk::raii::DebugUtilsMessengerEXT debugUtilsMessenger( instance, vk::su::makeDebugUtilsMessengerCreateInfoEXT() );
|
|
#endif
|
|
vk::raii::PhysicalDevice physicalDevice = std::move( vk::raii::PhysicalDevices( instance ).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::raii::su::SurfaceData surfaceData( instance, AppName, vk::Extent2D( 500, 500 ) );
|
|
|
|
std::pair<uint32_t, uint32_t> graphicsAndPresentQueueFamilyIndex =
|
|
vk::raii::su::findGraphicsAndPresentQueueFamilyIndex( physicalDevice, surfaceData.surface );
|
|
vk::raii::Device device = vk::raii::su::makeDevice(
|
|
physicalDevice, graphicsAndPresentQueueFamilyIndex.first, vk::su::getDeviceExtensions() );
|
|
|
|
vk::raii::CommandPool commandPool = vk::raii::CommandPool(
|
|
device, { vk::CommandPoolCreateFlagBits::eResetCommandBuffer, graphicsAndPresentQueueFamilyIndex.first } );
|
|
vk::raii::CommandBuffer commandBuffer = vk::raii::su::makeCommandBuffer( device, commandPool );
|
|
|
|
vk::raii::Queue graphicsQueue( device, graphicsAndPresentQueueFamilyIndex.first, 0 );
|
|
vk::raii::Queue presentQueue( 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 ) );
|
|
vk::raii::BufferView texelBufferView( device, bufferViewCreateInfo );
|
|
|
|
vk::raii::DescriptorSetLayout descriptorSetLayout = vk::raii::su::makeDescriptorSetLayout(
|
|
device, { { vk::DescriptorType::eUniformTexelBuffer, 1, vk::ShaderStageFlagBits::eVertex } } );
|
|
vk::raii::PipelineLayout pipelineLayout( device, { {}, *descriptorSetLayout } );
|
|
|
|
vk::Format colorFormat =
|
|
vk::su::pickSurfaceFormat( physicalDevice.getSurfaceFormatsKHR( *surfaceData.surface ) ).format;
|
|
vk::raii::RenderPass renderPass = vk::raii::su::makeRenderPass( device, colorFormat, vk::Format::eUndefined );
|
|
|
|
glslang::InitializeProcess();
|
|
vk::raii::ShaderModule vertexShaderModule =
|
|
vk::raii::su::makeShaderModule( device, vk::ShaderStageFlagBits::eVertex, vertexShaderText );
|
|
vk::raii::ShaderModule fragmentShaderModule =
|
|
vk::raii::su::makeShaderModule( device, vk::ShaderStageFlagBits::eFragment, fragmentShaderText_C_C );
|
|
glslang::FinalizeProcess();
|
|
|
|
std::vector<vk::raii::Framebuffer> framebuffers =
|
|
vk::raii::su::makeFramebuffers( device, renderPass, swapChainData.imageViews, nullptr, surfaceData.extent );
|
|
|
|
vk::raii::DescriptorPool descriptorPool =
|
|
vk::raii::su::makeDescriptorPool( device, { { vk::DescriptorType::eUniformTexelBuffer, 1 } } );
|
|
vk::raii::DescriptorSet descriptorSet =
|
|
std::move( vk::raii::DescriptorSets( device, { *descriptorPool, *descriptorSetLayout } ).front() );
|
|
|
|
vk::raii::su::updateDescriptorSets(
|
|
device,
|
|
descriptorSet,
|
|
{ { vk::DescriptorType::eUniformTexelBuffer, texelBufferData.buffer, &texelBufferView } },
|
|
{} );
|
|
|
|
vk::raii::PipelineCache pipelineCache( device, vk::PipelineCacheCreateInfo() );
|
|
vk::raii::Pipeline graphicsPipeline = vk::raii::su::makeGraphicsPipeline( 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:
|
|
vk::raii::Semaphore imageAcquiredSemaphore( 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();
|
|
|
|
vk::raii::Fence drawFence( 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;
|
|
}
|