claude_code/procedural-3d-engine
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Started work on variable rate shading sample

Browse source
This commit is contained in:
Sascha Willems 2020-09-01 21:51:06 +02:00
parent dcdabb9b12
commit 9d0fd8ce5a
5 changed files with 471 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

43
data/shaders/glsl/variablerateshading/scene.frag Normal file
View file

@ -0,0 +1,43 @@
#version 450
#extension GL_NV_shading_rate_image : require
layout (set = 1, binding = 0) uniform sampler2D samplerColorMap;
layout (set = 1, binding = 1) uniform sampler2D samplerNormalMap;
layout (location = 0) in vec3 inNormal;
layout (location = 1) in vec3 inColor;
layout (location = 2) in vec2 inUV;
layout (location = 3) in vec3 inViewVec;
layout (location = 4) in vec3 inLightVec;
layout (location = 5) in vec4 inTangent;
layout (location = 0) out vec4 outFragColor;
layout (constant_id = 0) const bool ALPHA_MASK = false;
layout (constant_id = 1) const float ALPHA_MASK_CUTOFF = 0.0f;
void main()
{
vec4 color = texture(samplerColorMap, inUV) * vec4(inColor, 1.0);
if (ALPHA_MASK) {
if (color.a < ALPHA_MASK_CUTOFF) {
discard;
}
}
vec3 N = normalize(inNormal);
vec3 T = normalize(inTangent.xyz);
vec3 B = cross(inNormal, inTangent.xyz) * inTangent.w;
mat3 TBN = mat3(T, B, N);
N = TBN * normalize(texture(samplerNormalMap, inUV).xyz * 2.0 - vec3(1.0));
const float ambient = 0.1;
vec3 L = normalize(inLightVec);
vec3 V = normalize(inViewVec);
vec3 R = reflect(-L, N);
vec3 diffuse = max(dot(N, L), ambient).rrr;
float specular = pow(max(dot(R, V), 0.0), 32.0);
outFragColor = vec4(diffuse * color.rgb + specular, color.a);
}

37
data/shaders/glsl/variablerateshading/scene.vert Normal file
View file

@ -0,0 +1,37 @@
#version 450
layout (location = 0) in vec3 inPos;
layout (location = 1) in vec3 inNormal;
layout (location = 2) in vec2 inUV;
layout (location = 3) in vec3 inColor;
layout (location = 4) in vec4 inTangent;
layout (set = 0, binding = 0) uniform UBOScene
{
mat4 projection;
mat4 view;
mat4 model;
vec4 lightPos;
vec4 viewPos;
} uboScene;
layout (location = 0) out vec3 outNormal;
layout (location = 1) out vec3 outColor;
layout (location = 2) out vec2 outUV;
layout (location = 3) out vec3 outViewVec;
layout (location = 4) out vec3 outLightVec;
layout (location = 5) out vec4 outTangent;
void main()
{
outNormal = inNormal;
outColor = inColor;
outUV = inUV;
outTangent = inTangent;
gl_Position = uboScene.projection * uboScene.view * uboScene.model * vec4(inPos.xyz, 1.0);
outNormal = mat3(uboScene.model) * inNormal;
vec4 pos = uboScene.model * vec4(inPos, 1.0);
outLightVec = uboScene.lightPos.xyz - pos.xyz;
outViewVec = uboScene.viewPos.xyz - pos.xyz;
}

1
examples/CMakeLists.txt
View file

@ -122,6 +122,7 @@ set(EXAMPLES
texturemipmapgen texturemipmapgen
texturesparseresidency texturesparseresidency
triangle triangle
variablerateshading
viewportarray viewportarray
vulkanscene vulkanscene
) )

332
examples/variablerateshading/variablerateshading.cpp Normal file
View file

@ -0,0 +1,332 @@
/*
* Vulkan Example - Variable rate shading
*
* Copyright (C) 2020 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
#include "variablerateshading.h"
VulkanExample::VulkanExample() : VulkanExampleBase(ENABLE_VALIDATION)
{
title = "Variable rate shading";
apiVersion = VK_VERSION_1_1;
camera.type = Camera::CameraType::firstperson;
camera.setPosition(glm::vec3(0.0f, 1.0f, 0.0f));
camera.setRotation(glm::vec3(0.0f, -90.0f, 0.0f));
camera.setPerspective(60.0f, (float)width / (float)height, 0.1f, 256.0f);
settings.overlay = true;
enabledInstanceExtensions.push_back(VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_EXTENSION_NAME);
enabledDeviceExtensions.push_back(VK_NV_SHADING_RATE_IMAGE_EXTENSION_NAME);
}
VulkanExample::~VulkanExample()
{
vkDestroyPipelineLayout(device, pipelineLayout, nullptr);
shaderData.buffer.destroy();
}
void VulkanExample::getEnabledFeatures()
{
enabledFeatures.samplerAnisotropy = deviceFeatures.samplerAnisotropy;
// POI
enabledPhysicalDeviceShadingRateImageFeaturesNV = {};
enabledPhysicalDeviceShadingRateImageFeaturesNV.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADING_RATE_IMAGE_FEATURES_NV;
enabledPhysicalDeviceShadingRateImageFeaturesNV.shadingRateImage = VK_TRUE;
// @todo
deviceCreatepNextChain = &enabledPhysicalDeviceShadingRateImageFeaturesNV;
}
void VulkanExample::buildCommandBuffers()
{
VkCommandBufferBeginInfo cmdBufInfo = vks::initializers::commandBufferBeginInfo();
VkClearValue clearValues[2];
clearValues[0].color = defaultClearColor;
clearValues[0].color = { { 0.25f, 0.25f, 0.25f, 1.0f } };;
clearValues[1].depthStencil = { 1.0f, 0 };
VkRenderPassBeginInfo renderPassBeginInfo = vks::initializers::renderPassBeginInfo();
renderPassBeginInfo.renderPass = renderPass;
renderPassBeginInfo.renderArea.offset.x = 0;
renderPassBeginInfo.renderArea.offset.y = 0;
renderPassBeginInfo.renderArea.extent.width = width;
renderPassBeginInfo.renderArea.extent.height = height;
renderPassBeginInfo.clearValueCount = 2;
renderPassBeginInfo.pClearValues = clearValues;
const VkViewport viewport = vks::initializers::viewport((float)width, (float)height, 0.0f, 1.0f);
const VkRect2D scissor = vks::initializers::rect2D(width, height, 0, 0);
for (int32_t i = 0; i < drawCmdBuffers.size(); ++i)
{
renderPassBeginInfo.framebuffer = frameBuffers[i];
VK_CHECK_RESULT(vkBeginCommandBuffer(drawCmdBuffers[i], &cmdBufInfo));
vkCmdBeginRenderPass(drawCmdBuffers[i], &renderPassBeginInfo, VK_SUBPASS_CONTENTS_INLINE);
vkCmdSetViewport(drawCmdBuffers[i], 0, 1, &viewport);
vkCmdSetScissor(drawCmdBuffers[i], 0, 1, &scissor);
vkCmdBindPipeline(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipeline);
vkCmdBindDescriptorSets(drawCmdBuffers[i], VK_PIPELINE_BIND_POINT_GRAPHICS, pipelineLayout, 0, 1, &descriptorSet, 0, nullptr);
// POI: todo
vkCmdBindShadingRateImageNV(drawCmdBuffers[i], shadingRateImage.view, VK_IMAGE_LAYOUT_SHADING_RATE_OPTIMAL_NV);
scene.draw(drawCmdBuffers[i], vkglTF::RenderFlags::BindImages, pipelineLayout);
drawUI(drawCmdBuffers[i]);
vkCmdEndRenderPass(drawCmdBuffers[i]);
VK_CHECK_RESULT(vkEndCommandBuffer(drawCmdBuffers[i]));
}
}
void VulkanExample::loadAssets()
{
vkglTF::descriptorBindingFlags = vkglTF::DescriptorBindingFlags::ImageBaseColor | vkglTF::DescriptorBindingFlags::ImageNormalMap;
scene.loadFromFile(getAssetPath() + "models/sponza/sponza.gltf", vulkanDevice, queue, vkglTF::FileLoadingFlags::PreTransformVertices | vkglTF::FileLoadingFlags::FlipY);
}
void VulkanExample::setupDescriptors()
{
// Pool
const std::vector<VkDescriptorPoolSize> poolSizes = {
vks::initializers::descriptorPoolSize(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 1),
};
VkDescriptorPoolCreateInfo descriptorPoolInfo = vks::initializers::descriptorPoolCreateInfo(poolSizes, 1);
VK_CHECK_RESULT(vkCreateDescriptorPool(device, &descriptorPoolInfo, nullptr, &descriptorPool));
// Descriptor set layout
const std::vector<VkDescriptorSetLayoutBinding> setLayoutBindings = {
vks::initializers::descriptorSetLayoutBinding(VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, VK_SHADER_STAGE_VERTEX_BIT, 0),
};
VkDescriptorSetLayoutCreateInfo descriptorLayout = vks::initializers::descriptorSetLayoutCreateInfo(setLayoutBindings);
VK_CHECK_RESULT(vkCreateDescriptorSetLayout(device, &descriptorLayout, nullptr, &descriptorSetLayout));
// Pipeline layout
const std::vector<VkDescriptorSetLayout> setLayouts = {
descriptorSetLayout,
vkglTF::descriptorSetLayoutImage,
};
VkPipelineLayoutCreateInfo pPipelineLayoutCreateInfo = vks::initializers::pipelineLayoutCreateInfo(setLayouts.data(), 2);
VK_CHECK_RESULT(vkCreatePipelineLayout(device, &pPipelineLayoutCreateInfo, nullptr, &pipelineLayout));
// Descriptor set
VkDescriptorSetAllocateInfo allocInfo = vks::initializers::descriptorSetAllocateInfo(descriptorPool, &descriptorSetLayout, 1);
VK_CHECK_RESULT(vkAllocateDescriptorSets(device, &allocInfo, &descriptorSet));
std::vector<VkWriteDescriptorSet> writeDescriptorSets = {
vks::initializers::writeDescriptorSet(descriptorSet, VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER, 0, &shaderData.buffer.descriptor),
};
vkUpdateDescriptorSets(device, writeDescriptorSets.size(), writeDescriptorSets.data(), 0, NULL);
}
// [POI]
void VulkanExample::prepareShadingRateImage()
{
VkImageCreateInfo imageCI{};
imageCI.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
imageCI.imageType = VK_IMAGE_TYPE_2D;
imageCI.format = VK_FORMAT_R8_UINT;
imageCI.extent = { 512, 512, 1 };
imageCI.mipLevels = 1;
imageCI.arrayLayers = 1;
imageCI.samples = VK_SAMPLE_COUNT_1_BIT;
imageCI.tiling = VK_IMAGE_TILING_OPTIMAL;
imageCI.usage = VK_IMAGE_USAGE_SHADING_RATE_IMAGE_BIT_NV | VK_IMAGE_USAGE_TRANSFER_DST_BIT;
VK_CHECK_RESULT(vkCreateImage(device, &imageCI, nullptr, &shadingRateImage.image));
VkMemoryRequirements memReqs{};
vkGetImageMemoryRequirements(device, shadingRateImage.image, &memReqs);
VkMemoryAllocateInfo memAllloc{};
memAllloc.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
memAllloc.allocationSize = memReqs.size;
memAllloc.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAllloc, nullptr, &shadingRateImage.memory));
VK_CHECK_RESULT(vkBindImageMemory(device, shadingRateImage.image, shadingRateImage.memory, 0));
VkImageViewCreateInfo imageViewCI{};
imageViewCI.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
imageViewCI.viewType = VK_IMAGE_VIEW_TYPE_2D;
imageViewCI.image = shadingRateImage.image;
imageViewCI.format = VK_FORMAT_R8_UINT;
imageViewCI.subresourceRange.baseMipLevel = 0;
imageViewCI.subresourceRange.levelCount = 1;
imageViewCI.subresourceRange.baseArrayLayer = 0;
imageViewCI.subresourceRange.layerCount = 1;
imageViewCI.subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
VK_CHECK_RESULT(vkCreateImageView(device, &imageViewCI, nullptr, &shadingRateImage.view));
// Populate with shading rate pattern
const size_t bufferSize = 512 * 512 * sizeof(uint8_t);
uint8_t val = VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_PIXEL_NV;
uint8_t* shadingRatePatternData = new uint8_t[512 * 512];
memset(shadingRatePatternData, val, bufferSize);
VkBuffer stagingBuffer;
VkDeviceMemory stagingMemory;
VkBufferCreateInfo bufferCreateInfo{};
bufferCreateInfo.sType = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
bufferCreateInfo.size = bufferSize;
bufferCreateInfo.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT;
bufferCreateInfo.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
VK_CHECK_RESULT(vkCreateBuffer(device, &bufferCreateInfo, nullptr, &stagingBuffer));
VkMemoryAllocateInfo memAllocInfo{};
memAllocInfo.sType = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
memReqs = {};
vkGetBufferMemoryRequirements(device, stagingBuffer, &memReqs);
memAllocInfo.allocationSize = memReqs.size;
memAllocInfo.memoryTypeIndex = vulkanDevice->getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAllocInfo, nullptr, &stagingMemory));
VK_CHECK_RESULT(vkBindBufferMemory(device, stagingBuffer, stagingMemory, 0));
uint8_t* mapped;
VK_CHECK_RESULT(vkMapMemory(device, stagingMemory, 0, memReqs.size, 0, (void**)&mapped));
memcpy(mapped, shadingRatePatternData, bufferSize);
vkUnmapMemory(device, stagingMemory);
delete[] shadingRatePatternData;
// Upload
VkCommandBuffer copyCmd = vulkanDevice->createCommandBuffer(VK_COMMAND_BUFFER_LEVEL_PRIMARY, true);
VkImageSubresourceRange subresourceRange = {};
subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
subresourceRange.levelCount = 1;
subresourceRange.layerCount = 1;
{
VkImageMemoryBarrier imageMemoryBarrier{};
imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_UNDEFINED;
imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
imageMemoryBarrier.srcAccessMask = 0;
imageMemoryBarrier.dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
imageMemoryBarrier.image = shadingRateImage.image;
imageMemoryBarrier.subresourceRange = subresourceRange;
vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, VK_PIPELINE_STAGE_TRANSFER_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
}
VkBufferImageCopy bufferCopyRegion{};
bufferCopyRegion.imageSubresource.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT;
bufferCopyRegion.imageSubresource.layerCount = 1;
bufferCopyRegion.imageExtent.width = 512;
bufferCopyRegion.imageExtent.height = 512;
bufferCopyRegion.imageExtent.depth = 1;
vkCmdCopyBufferToImage(copyCmd, stagingBuffer, shadingRateImage.image, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, &bufferCopyRegion);
{
VkImageMemoryBarrier imageMemoryBarrier{};
imageMemoryBarrier.sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER;
imageMemoryBarrier.oldLayout = VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL;
imageMemoryBarrier.newLayout = VK_IMAGE_LAYOUT_SHADING_RATE_OPTIMAL_NV;
imageMemoryBarrier.srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT;
imageMemoryBarrier.dstAccessMask = 0;
imageMemoryBarrier.image = shadingRateImage.image;
imageMemoryBarrier.subresourceRange = subresourceRange;
vkCmdPipelineBarrier(copyCmd, VK_PIPELINE_STAGE_TRANSFER_BIT, VK_PIPELINE_STAGE_BOTTOM_OF_PIPE_BIT, 0, 0, nullptr, 0, nullptr, 1, &imageMemoryBarrier);
}
vulkanDevice->flushCommandBuffer(copyCmd, queue, true);
vkFreeMemory(device, stagingMemory, nullptr);
vkDestroyBuffer(device, stagingBuffer, nullptr);
}
void VulkanExample::preparePipelines()
{
VkPipelineInputAssemblyStateCreateInfo inputAssemblyStateCI = vks::initializers::pipelineInputAssemblyStateCreateInfo(VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST, 0, VK_FALSE);
VkPipelineRasterizationStateCreateInfo rasterizationStateCI = vks::initializers::pipelineRasterizationStateCreateInfo(VK_POLYGON_MODE_FILL, VK_CULL_MODE_BACK_BIT, VK_FRONT_FACE_COUNTER_CLOCKWISE, 0);
VkPipelineColorBlendAttachmentState blendAttachmentStateCI = vks::initializers::pipelineColorBlendAttachmentState(0xf, VK_FALSE);
VkPipelineColorBlendStateCreateInfo colorBlendStateCI = vks::initializers::pipelineColorBlendStateCreateInfo(1, &blendAttachmentStateCI);
VkPipelineDepthStencilStateCreateInfo depthStencilStateCI = vks::initializers::pipelineDepthStencilStateCreateInfo(VK_TRUE, VK_TRUE, VK_COMPARE_OP_LESS_OR_EQUAL);
VkPipelineViewportStateCreateInfo viewportStateCI = vks::initializers::pipelineViewportStateCreateInfo(1, 1, 0);
VkPipelineMultisampleStateCreateInfo multisampleStateCI = vks::initializers::pipelineMultisampleStateCreateInfo(VK_SAMPLE_COUNT_1_BIT, 0);
const std::vector<VkDynamicState> dynamicStateEnables = { VK_DYNAMIC_STATE_VIEWPORT, VK_DYNAMIC_STATE_SCISSOR };
VkPipelineDynamicStateCreateInfo dynamicStateCI = vks::initializers::pipelineDynamicStateCreateInfo(dynamicStateEnables.data(), static_cast<uint32_t>(dynamicStateEnables.size()), 0);
std::array<VkPipelineShaderStageCreateInfo, 2> shaderStages;
// [POI] Per-Viewport shading rate palette entries
const std::vector<VkShadingRatePaletteEntryNV> shadingRatePaletteEntries = {
VK_SHADING_RATE_PALETTE_ENTRY_NO_INVOCATIONS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_16_INVOCATIONS_PER_PIXEL_NV,
VK_SHADING_RATE_PALETTE_ENTRY_8_INVOCATIONS_PER_PIXEL_NV,
VK_SHADING_RATE_PALETTE_ENTRY_4_INVOCATIONS_PER_PIXEL_NV,
VK_SHADING_RATE_PALETTE_ENTRY_2_INVOCATIONS_PER_PIXEL_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_PIXEL_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X1_PIXELS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_1X2_PIXELS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X2_PIXELS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_4X2_PIXELS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_2X4_PIXELS_NV,
VK_SHADING_RATE_PALETTE_ENTRY_1_INVOCATION_PER_4X4_PIXELS_NV,
};
VkShadingRatePaletteNV shadingRatePalette{};
shadingRatePalette.shadingRatePaletteEntryCount = static_cast<uint32_t>(shadingRatePaletteEntries.size());
shadingRatePalette.pShadingRatePaletteEntries = shadingRatePaletteEntries.data();
VkPipelineViewportShadingRateImageStateCreateInfoNV pipelineViewportShadingRateImageStateCI{};
pipelineViewportShadingRateImageStateCI.sType = VK_STRUCTURE_TYPE_PIPELINE_VIEWPORT_SHADING_RATE_IMAGE_STATE_CREATE_INFO_NV;
pipelineViewportShadingRateImageStateCI.shadingRateImageEnable = VK_TRUE;
pipelineViewportShadingRateImageStateCI.viewportCount = 1;
pipelineViewportShadingRateImageStateCI.pShadingRatePalettes = &shadingRatePalette;
viewportStateCI.pNext = &pipelineViewportShadingRateImageStateCI;
VkGraphicsPipelineCreateInfo pipelineCI = vks::initializers::pipelineCreateInfo(pipelineLayout, renderPass, 0);
pipelineCI.pInputAssemblyState = &inputAssemblyStateCI;
pipelineCI.pRasterizationState = &rasterizationStateCI;
pipelineCI.pColorBlendState = &colorBlendStateCI;
pipelineCI.pMultisampleState = &multisampleStateCI;
pipelineCI.pViewportState = &viewportStateCI;
pipelineCI.pDepthStencilState = &depthStencilStateCI;
pipelineCI.pDynamicState = &dynamicStateCI;
pipelineCI.stageCount = static_cast<uint32_t>(shaderStages.size());
pipelineCI.pStages = shaderStages.data();
pipelineCI.pVertexInputState = vkglTF::Vertex::getPipelineVertexInputState({ vkglTF::VertexComponent::Position, vkglTF::VertexComponent::Normal, vkglTF::VertexComponent::UV, vkglTF::VertexComponent::Color, vkglTF::VertexComponent::Tangent });
shaderStages[0] = loadShader(getShadersPath() + "variablerateshading/scene.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getShadersPath() + "variablerateshading/scene.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCI, nullptr, &pipeline));
}
void VulkanExample::prepareUniformBuffers()
{
VK_CHECK_RESULT(vulkanDevice->createBuffer(
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
&shaderData.buffer,
sizeof(shaderData.values)));
VK_CHECK_RESULT(shaderData.buffer.map());
updateUniformBuffers();
}
void VulkanExample::updateUniformBuffers()
{
shaderData.values.projection = camera.matrices.perspective;
shaderData.values.view = camera.matrices.view;
shaderData.values.viewPos = camera.viewPos;
memcpy(shaderData.buffer.mapped, &shaderData.values, sizeof(shaderData.values));
}
void VulkanExample::prepare()
{
VulkanExampleBase::prepare();
loadAssets();
vkCmdBindShadingRateImageNV = reinterpret_cast<PFN_vkCmdBindShadingRateImageNV>(vkGetDeviceProcAddr(device, "vkCmdBindShadingRateImageNV"));
prepareShadingRateImage();
prepareUniformBuffers();
setupDescriptors();
preparePipelines();
buildCommandBuffers();
prepared = true;
}
void VulkanExample::render()
{
renderFrame();
if (camera.updated) {
updateUniformBuffers();
}
}
void VulkanExample::OnUpdateUIOverlay(vks::UIOverlay* overlay)
{
}
VULKAN_EXAMPLE_MAIN()

58
examples/variablerateshading/variablerateshading.h Normal file
View file

@ -0,0 +1,58 @@
/*
* Vulkan Example - Variable rate shading
*
* Copyright (C) 2020 by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
*/
#include "vulkanexamplebase.h"
#include "VulkanglTFModel.h"
#define ENABLE_VALIDATION false
class VulkanExample : public VulkanExampleBase
{
public:
vkglTF::Model scene;
struct ShadingRateImage {
VkImage image;
VkDeviceMemory memory;
VkImageView view;
} shadingRateImage;
struct ShaderData {
vks::Buffer buffer;
struct Values {
glm::mat4 projection;
glm::mat4 view;
glm::mat4 model = glm::mat4(1.0f);
glm::vec4 lightPos = glm::vec4(0.0f, -2.5f, 0.0f, 1.0f);
glm::vec4 viewPos;
} values;
} shaderData;
VkPipeline pipeline;
VkPipelineLayout pipelineLayout;
VkDescriptorSet descriptorSet;
VkDescriptorSetLayout descriptorSetLayout;
VkPhysicalDeviceShadingRateImageFeaturesNV enabledPhysicalDeviceShadingRateImageFeaturesNV;
PFN_vkCmdBindShadingRateImageNV vkCmdBindShadingRateImageNV;
VulkanExample();
~VulkanExample();
virtual void getEnabledFeatures();
void buildCommandBuffers();
void loadglTFFile(std::string filename);
void loadAssets();
void prepareShadingRateImage();
void setupDescriptors();
void preparePipelines();
void prepareUniformBuffers();
void updateUniformBuffers();
void prepare();
virtual void render();
virtual void OnUpdateUIOverlay(vks::UIOverlay* overlay);
};