77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
#pragma once
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#include <memory>
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#include "gfx/shader.hpp"
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#include "game/world.hpp"
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#include "game/sector.hpp"
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#include "game/meshinstance.hpp"
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namespace gfx
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{
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struct DrawSectorParams
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{
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size_t draw_id;
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const game::Sector* sector;
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const game::Portal* entry_portal;
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glm::vec4 clip_plane;
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collision::AABB2 screen_aabb;
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size_t recursion;
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glm::mat4 view;
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glm::mat4 view_proj;
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glm::vec3 eye;
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};
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struct SectorShader
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{
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std::unique_ptr<Shader> shader;
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size_t setup_sector = 0;
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};
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class Renderer
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{
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public:
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Renderer();
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void Begin(size_t width, size_t height);
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void DrawWorld(
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const game::World& world,
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size_t sector_idx,
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const glm::vec3& eye,
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const glm::vec3& dir,
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const glm::vec3& up,
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float aspect,
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float fov);
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private:
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SectorShader sector_shader_;
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SectorShader portal_shader_;
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SectorShader mesh_shader_;
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std::shared_ptr<VertexArray> portal_vao_;
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void SetupPortalVAO();
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size_t max_portal_recursion_ = 10;
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// Minimum distance to portal mesh from eye
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// If the distance is smaller, portal plane is shifted to avoid clipping by near plane
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float min_portal_distance_;
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glm::mat4 proj_;
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size_t last_sector_id;
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const Shader* current_shader_;
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void UnreadyShaders();
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void SetupSectorShader(const DrawSectorParams& params, SectorShader& sshader);
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void DrawSector(const DrawSectorParams& params);
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void DrawPortal(const DrawSectorParams& params, const game::Portal& portal);
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static bool ComputeQuadScreenAABB(const glm::vec3* verts, const glm::mat4 view_proj, collision::AABB2& aabb);
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void DrawPortalPlane(const DrawSectorParams& params, const game::Portal& portal, const glm::mat4& trans, bool clear_depth);
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void DrawMeshInstance(const DrawSectorParams& params, const game::MeshInstance& mesh_instance, const glm::mat4& model);
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};
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} |