Made simple render system

simple_render_system.cpp

@@ -0,0 +1,85 @@
+#include "simple_render_system.hpp"
+
+#include <stdexcept>
+#include <array>
+
+#define GLM_FORCE_RADIANS
+#define GLM_FORCE_DEPTH_ZERO_TO_ONE
+#include <glm/glm.hpp>
+#include <glm/gtc/constants.hpp>
+
+namespace cve {
+  struct SimplePushConstantData{
+    glm::mat2 transform{1.f}; // Identity matrix
+    glm::vec2 offset;
+    alignas(16) glm::vec3 color;
+  };
+
+  SimpleRenderSystem::SimpleRenderSystem(CveDevice& device, VkRenderPass renderPass): 
+  cveDevice{device} {
+    createPipelineLayout();
+    createPipeline(renderPass);
+  }
+
+  SimpleRenderSystem::~SimpleRenderSystem() {
+    vkDestroyPipelineLayout(cveDevice.device(), pipelineLayout, nullptr);
+  }
+
+  void SimpleRenderSystem::createPipelineLayout() {
+    VkPushConstantRange pushConstantRange{};
+    pushConstantRange.stageFlags = VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT;
+    pushConstantRange.offset = 0;
+    pushConstantRange.size = sizeof(SimplePushConstantData);
+    
+    VkPipelineLayoutCreateInfo pipelineLayoutInfo{};
+    pipelineLayoutInfo.sType = VK_STRUCTURE_TYPE_PIPELINE_LAYOUT_CREATE_INFO;
+    pipelineLayoutInfo.setLayoutCount = 0;
+    pipelineLayoutInfo.pSetLayouts = nullptr;
+    pipelineLayoutInfo.pushConstantRangeCount = 1;
+    pipelineLayoutInfo.pPushConstantRanges = &pushConstantRange;
+    if (vkCreatePipelineLayout(cveDevice.device(), &pipelineLayoutInfo, nullptr, &pipelineLayout) !=
+        VK_SUCCESS) {
+      throw std::runtime_error("Failed to create pipeline layout");
+    }
+  }
+
+  void SimpleRenderSystem::createPipeline(VkRenderPass renderPass) {
+    assert(pipelineLayout != nullptr && "Cannot create pipeline before pipeline layout");
+    
+    PipelineConfigInfo pipelineConfig{};
+    CvePipeline::defaultPipelineConfigInfo(pipelineConfig);
+    pipelineConfig.renderPass = renderPass;
+    pipelineConfig.pipelineLayout = pipelineLayout;
+    cvePipeline = std::make_unique<CvePipeline>(
+      cveDevice,
+      "shaders/simple_shader.vert.spv",
+      "shaders/simple_shader.frag.spv",
+      pipelineConfig
+    );
+  }
+
+  void SimpleRenderSystem::renderGameObjects(VkCommandBuffer commandBuffer, std::vector<CveGameObject> &gameObjects) {
+    cvePipeline->bind(commandBuffer);
+
+    for (auto& obj: gameObjects) {
+      obj.transform2d.rotation = glm::mod(obj.transform2d.rotation + 0.001f, glm::two_pi<float>());
+
+      SimplePushConstantData push{}; 
+      push.offset = obj.transform2d.translation;
+      push.color = obj.color;
+      push.transform = obj.transform2d.mat2();
+
+      vkCmdPushConstants(
+        commandBuffer, 
+        pipelineLayout, 
+        VK_SHADER_STAGE_VERTEX_BIT | VK_SHADER_STAGE_FRAGMENT_BIT, 
+        0, 
+        sizeof(SimplePushConstantData),
+        &push
+      );
+
+      obj.model->bind(commandBuffer);
+      obj.model->draw(commandBuffer);
+    }
+  }
+}