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105 lines
2.5 KiB
105 lines
2.5 KiB
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#pragma once |
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#if defined (_WIN32) |
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#include <SDL.h> |
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#else |
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#include <SDL2/SDL.h> |
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#endif |
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#include <GL/glew.h> |
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#include <glm/glm.hpp> |
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#include "asset.h" |
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#include "camera.h" |
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#include "entity.h" |
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#include "lights.h" |
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#include "util.h" |
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#include "shader_program.h" |
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// NOTE: array of entities rendered with the same shader program |
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struct render_group |
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{ |
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// TODO: also needs to be resizable |
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entity* entities; |
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uint entity_count; |
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shader_wrapper shader; |
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// TODO: does it makes sense to have the mesh_type stored on the |
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// render_group? can then easily pass to roDraw() along with the entity |
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// render_objects... |
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// only the mesh object and render object really need to know about the |
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// mesh_type... |
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// |
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//mesh_t mesh_type; |
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}; |
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struct SDL_Handles |
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{ |
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SDL_Window *window; |
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SDL_GLContext glContext; |
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SDL_DisplayMode currentDisplayMode; |
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}; |
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struct render_state |
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{ |
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glm::vec2 viewport_dims; |
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camera cam; |
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util_RGBA clear_col; |
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SDL_Handles* handles; |
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bool running; |
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// TODO: this really needs to be a resizable array, or linked list, or |
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// ...gasp, std::vector |
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render_group** render_groups; |
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uint render_group_count; |
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// WIP |
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render_asset* asset_list; // NOTE: head pointer of linked list |
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memory_arena* arena; |
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// FIXME: should be a hashmap for textures loaded from assets |
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// ie) pallete textures |
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util_image* textures; |
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// TODO: hide shaders behind a better abstraction than 'shader_wrapper' |
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default_shader_program* default_shader; |
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simple_shader_program* simple_shader; |
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light_group* lights; |
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}; |
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render_state* |
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renInit(const char* title = "Tangerine", |
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glm::vec2 viewport_dims = glm::vec2(1280, 720), |
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Uint32 SDL_init_flags = 0); |
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void renShutdown(render_state* rs); |
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render_group* |
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renAllocateGroup(uint entity_count, shader_wrapper shader); |
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// NOTE: callback function signature to use with renDoRenderLoop() |
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typedef void (*frame_callback_fn) (render_state*); |
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// NOTE: There are 2 callbacks to use here, cb_func_pre is called before |
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// the call to renRenderFrame(), cb_fun_post is called after |
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// NOTE: if you use cb_func_pre, you will have to use SDL_PollEvent() manually |
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// and at minimum set rs->running = false on SDL_QUIT event |
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void |
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renDoRenderLoop(render_state* rs, |
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uint framerate = 60, |
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frame_callback_fn cb_func_pre = nullptr, |
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frame_callback_fn cb_func_post = nullptr); |
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void renRenderFrame(render_state* rs); |
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bool |
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renAddLight(render_state* rs, |
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glm::vec3 pos = glm::vec3(0, 0, 0), |
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glm::vec3 color = glm::vec3(1, 1, 1), |
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float intensity = 1.0); |
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glm::vec2 |
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renGetWindowDims(render_state* rs); |
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