91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
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// 2d: Functions to render 2d things immediatly. Simple things like meshes, lines, triangles, quads.
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// render: Renderer, takes complex objects with materials and renders them.
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// Might use an object buffer/queue and render things later, to enable
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// sorting and other complex rendering procedures (culling).
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// shader: Shaders! They have enough code to have their own source files
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// object: Objects, materials, maybe other things. To be used by the renderer.
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// light: Lights to be used by the renderer. There are enought types to separate them from objects.
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// Might (or might not) add: compute shaders, vfx/postprocessing passes, animations
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#ifndef _PIUMA_RENDER_RENDER_H_
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#define _PIUMA_RENDER_RENDER_H_
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#include "primitives.h"
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#include "shader.h"
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#include "2d.h"
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#include "lights.h"
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#include "object.h"
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#include "state.h"
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void r_init();
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void r_deinit();
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void r_size_update(u32 width, u32 height);
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void r_time_update(f64 time);
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void r_clear(v4 color = {0.0, 0.0, 0.0, 0.0});
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void r_swap();
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struct r_shadow_map
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{
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// FBO + depth
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u32 gl_FBO;
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u32 gl_depth_texture;
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m4 view_matrix;
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};
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struct r_scene
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{
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m4 view_matrix;
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m4 view_matrix_inverse;
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m4 projection_matrix;
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m4 projection_matrix_inverse;
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r_object *objects;
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u64 objects_count;
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r_light_container lights;
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GLuint gl_lights;
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r_shadow_map shadow_map;
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r_cubemap environment_map;
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};
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r_scene r_scene_create();
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void r_scene_destroy(r_scene *scene);
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void r_scene_set_view (r_scene *scene, m4 m);
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void r_scene_set_projection(r_scene *scene, m4 m);
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void r_update_lights(r_scene *scene);
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void r_render_scene(r_scene *scene);
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// Single object rendering functions (batched funcs are below)
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void r_render_object(r_scene *scene, r_object *object, r_shader *shader_override = NULL);
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void r_render_object_wireframe(r_scene *scene, r_object *object);
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void r_render_line(r_scene *scene, v3 a, v3 b, v4 a_color, v4 b_color, f32 thickness = 1.0);
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// Batch render functions
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void r_render_objects(r_scene *scene, u64 count, r_object **objects);
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// Shadow maps
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r_shadow_map r_build_shadow_map_sun(r_scene *scene, r_sun_light *sun);
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void r_free_shadow_map(r_shadow_map *sm);
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void r_framebuffer_select(r_framebuffer *fb);
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void r_merge_and_postprocess();
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#endif
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