Add 2D Batch renderer

CopiumEngine/src/copium/renderer/Renderer.h

@@ -0,0 +1,76 @@
+#pragma once
+
+#include "copium/buffer/CommandBuffer.h"
+#include "copium/buffer/IndexBuffer.h"
+#include "copium/buffer/VertexBuffer.h"
+#include "copium/core/Vulkan.h"
+#include "copium/pipeline/Pipeline.h"
+#include "copium/pipeline/PipelineCreator.h"
+#include "copium/sampler/Texture2D.h"
+#include "copium/util/Common.h"
+
+#include <glm/glm.hpp>
+#include <vector>
+
+namespace Copium
+{
+  class Renderer
+  {
+    CP_DELETE_COPY_AND_MOVE_CTOR(Renderer);
+
+    struct Vertex
+    {
+      glm::vec2 position;
+      glm::vec3 color;
+      glm::vec2 texCoord;
+      int8_t texIndex;
+
+      static VertexDescriptor GetDescriptor()
+      {
+        VertexDescriptor descriptor{};
+        descriptor.AddAttribute(0, 0, VK_FORMAT_R32G32_SFLOAT, offsetof(Vertex, position), sizeof(Vertex));
+        descriptor.AddAttribute(0, 1, VK_FORMAT_R32G32B32_SFLOAT, offsetof(Vertex, color), sizeof(Vertex));
+        descriptor.AddAttribute(0, 2, VK_FORMAT_R32G32_SFLOAT, offsetof(Vertex, texCoord), sizeof(Vertex));
+        descriptor.AddAttribute(0, 3, VK_FORMAT_R8_SINT, offsetof(Vertex, texIndex), sizeof(Vertex));
+        return descriptor;
+      }
+    };
+
+  private:
+    Vulkan& vulkan;
+
+    DescriptorPool descriptorPool;
+    IndexBuffer ibo;
+    Texture2D emptyTexture;
+    std::unique_ptr<Pipeline> graphicsPipeline;
+    std::vector<std::unique_ptr<Buffer>> vbos;
+    std::vector<std::unique_ptr<DescriptorSet>> descriptorSets;
+
+    // Temporary data during a render
+    CommandBuffer* currentCommandBuffer;
+    Buffer* currentVertexBuffer;
+    DescriptorSet* currentDescriptorSet;
+    std::vector<const Sampler*> samplers;
+    int vboIndex;
+    int vertexCount;
+    int indexCount;
+    void* mappedVertexBuffer;
+    int texturesUsed;
+  public:
+    Renderer(Vulkan& vulkan, VkRenderPass renderPass, DescriptorPool& descriptorPool);
+
+    void Quad(const glm::vec2& from, const glm::vec2& to, const glm::vec3& color = glm::vec3{1, 1, 1});
+    void Quad(const glm::vec2& from, const glm::vec2& to, const Sampler& sampler, const glm::vec2& texCoord1 = glm::vec2{0, 0}, const glm::vec2& texCoord2 = glm::vec2{1, 1});
+
+    void Begin(CommandBuffer& commandBuffer);
+    void End();
+  private:
+
+    int AllocateSampler(const Sampler& sampler);
+    void AllocateQuad();
+    void Flush();
+    void NextVertexBuffer();
+
+    void AddVertex(const glm::vec2& position, const glm::vec3& color, int texindex, const glm::vec2& texCoord);
+  };
+}