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#include "xe_render_system.hpp"
#include <vulkan/vulkan.h>
#include "xe_device.hpp"
#include "xe_pipeline.hpp"
#include "xe_game_object.hpp"
#include "xe_swap_chain.hpp"
#include "xe_renderer.hpp"
#include "xe_descriptors.hpp"
#include "xe_engine.hpp"
#include <memory>
#include <stdexcept>
#include <iostream>
namespace xe {
XeRenderSystem::XeRenderSystem(
XeEngine &xeEngine,
std::string vert,
std::string frag,
uint32_t pushCunstantDataSize,
uint32_t uniformBufferDataSize)
: xeDevice{xeEngine.xeDevice}, xeRenderer{xeEngine.xeRenderer} {
createUniformBuffers(*xeEngine.xeDescriptorPool, *xeEngine.xeDescriptorSetLayout, uniformBufferDataSize);
createPipelineLayout(*xeEngine.xeDescriptorSetLayout, pushCunstantDataSize, uniformBufferDataSize);
createPipeline(xeRenderer.getSwapChainRenderPass(), vert, frag);
}
XeRenderSystem::~XeRenderSystem() {
vkDestroyPipelineLayout(xeDevice.device(), pipelineLayout, nullptr);
};
void XeRenderSystem::createUniformBuffers(XeDescriptorPool &xeDescriptorPool, XeDescriptorSetLayout &xeDescriptorSetLayout, uint32_t uniformBufferDataSize) {
if(uniformBufferDataSize == 0) return;
uboBuffers = std::vector<std::unique_ptr<XeBuffer>>(XeSwapChain::MAX_FRAMES_IN_FLIGHT);
for (int i = 0; i < uboBuffers.size(); i++) {
uboBuffers[i] = std::make_unique<XeBuffer>(
xeDevice,
uniformBufferDataSize,
XeSwapChain::MAX_FRAMES_IN_FLIGHT,
VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT,
VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
uboBuffers[i]->map();
}
descriptorSets = std::vector<VkDescriptorSet>(XeSwapChain::MAX_FRAMES_IN_FLIGHT);
for (int i = 0; i < descriptorSets.size(); i++) {
auto bufferInfo = uboBuffers[i]->descriptorInfo();
XeDescriptorWriter(xeDescriptorSetLayout, xeDescriptorPool)
.writeBuffer(0, &bufferInfo)
.build(descriptorSets[i]);
}
}
void XeRenderSystem::createPipelineLayout(XeDescriptorSetLayout &xeDescriptorSetLayout, uint32_t pushCunstantDataSize, uint32_t uniformBufferDataSize) {
VkPushConstantRange pushConstantRange;
pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
pushConstantRange.offset = 0;
pushConstantRange.size = pushCunstantDataSize;
VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
if (pushCunstantDataSize > 0) {
pipelineLayoutInfo.pushConstantRangeCount = 1;
pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
} else {
pipelineLayoutInfo.pushConstantRangeCount = 0;
pipelineLayoutInfo.pPushConstantRanges = nullptr;
}
std::vector<VkDescriptorSetLayout> descriptorSetLayouts{xeDescriptorSetLayout.getDescriptorSetLayout()};
if (uniformBufferDataSize > 0) {
pipelineLayoutInfo.setLayoutCount = static_cast<uint32_t>(descriptorSetLayouts.size());
pipelineLayoutInfo.pSetLayouts = descriptorSetLayouts.data();
} else {
pipelineLayoutInfo.setLayoutCount = 0;
pipelineLayoutInfo.pSetLayouts = nullptr;
}
if(vkCreatePipelineLayout(xeDevice.device(), &pipelineLayoutInfo, nullptr, &pipelineLayout) != VK_SUCCESS) {
std::runtime_error("failed to create pipeline layout!");
}
}
void XeRenderSystem::createPipeline(VkRenderPass renderPass, std::string vert, std::string frag) {
assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
PipelineConfigInfo pipelineConfig{};
XePipeline::defaultPipelineConfigInfo(pipelineConfig);
pipelineConfig.renderPass = renderPass;
pipelineConfig.pipelineLayout = pipelineLayout;
xePipeline = std::make_unique<XePipeline>(
xeDevice,
vert,
frag,
pipelineConfig
);
}
void XeRenderSystem::loadPushConstant(void *pushConstantData, uint32_t pushConstantSize) {
if(!boundPipeline) {
xeRenderer.beginSwapChainRenderPass(xeRenderer.getCurrentCommandBuffer());
xePipeline->bind(xeRenderer.getCurrentCommandBuffer());
boundPipeline = true;
}
if(!boundDescriptor) {
vkCmdBindDescriptorSets(
xeRenderer.getCurrentCommandBuffer(),
VK_PIPELINE_BIND_POINT_GRAPHICS,
pipelineLayout,
0,
1,
&descriptorSets[xeRenderer.getFrameIndex()],
0,
nullptr);
boundDescriptor = true;
}
vkCmdPushConstants(
xeRenderer.getCurrentCommandBuffer(),
pipelineLayout,
VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT,
0,
pushConstantSize,
pushConstantData);
}
void XeRenderSystem::loadUniformObject(void *uniformBufferData, uint32_t uniformBufferSize) {
uboBuffers[xeRenderer.getFrameIndex()]->writeToBuffer(uniformBufferData);
uboBuffers[xeRenderer.getFrameIndex()]->flush();
}
void XeRenderSystem::render(XeGameObject &gameObject) {
if(!boundPipeline){
xeRenderer.beginSwapChainRenderPass(xeRenderer.getCurrentCommandBuffer());
xePipeline->bind(xeRenderer.getCurrentCommandBuffer());
boundPipeline = true;
}
gameObject.model->bind(xeRenderer.getCurrentCommandBuffer());
gameObject.model->draw(xeRenderer.getCurrentCommandBuffer());
}
void XeRenderSystem::stop() {
boundPipeline = false;
boundDescriptor = false;
xeRenderer.endSwapChainRenderPass(xeRenderer.getCurrentCommandBuffer());
}
}
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