/*************************************************************************/ /* sky.h */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* Permission is hereby granted, free of charge, to any person obtaining */ /* a copy of this software and associated documentation files (the */ /* "Software"), to deal in the Software without restriction, including */ /* without limitation the rights to use, copy, modify, merge, publish, */ /* distribute, sublicense, and/or sell copies of the Software, and to */ /* permit persons to whom the Software is furnished to do so, subject to */ /* the following conditions: */ /* */ /* The above copyright notice and this permission notice shall be */ /* included in all copies or substantial portions of the Software. */ /* */ /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /*************************************************************************/ #ifndef SKY_RD_H #define SKY_RD_H #include "core/templates/rid_owner.h" #include "servers/rendering/renderer_compositor.h" #include "servers/rendering/renderer_rd/pipeline_cache_rd.h" #include "servers/rendering/renderer_rd/shaders/environment/sky.glsl.gen.h" #include "servers/rendering/renderer_rd/storage_rd/material_storage.h" #include "servers/rendering/renderer_scene_render.h" #include "servers/rendering/rendering_device.h" #include "servers/rendering/shader_compiler.h" // Forward declare RendererSceneRenderRD so we can pass it into some of our methods, these classes are pretty tightly bound class RendererSceneRenderRD; class RenderSceneBuffersRD; namespace RendererRD { class SkyRD { public: enum SkySet { SKY_SET_UNIFORMS, SKY_SET_MATERIAL, SKY_SET_TEXTURES, SKY_SET_FOG, SKY_SET_MAX }; // Skys need less info from Directional Lights than the normal shaders struct SkyDirectionalLightData { float direction[3]; float energy; float color[3]; float size; uint32_t enabled; uint32_t pad[3]; }; private: RD::DataFormat texture_format = RD::DATA_FORMAT_R16G16B16A16_SFLOAT; RID index_buffer; RID index_array; enum SkyTextureSetVersion { SKY_TEXTURE_SET_BACKGROUND, SKY_TEXTURE_SET_HALF_RES, SKY_TEXTURE_SET_QUARTER_RES, SKY_TEXTURE_SET_CUBEMAP, SKY_TEXTURE_SET_CUBEMAP_HALF_RES, SKY_TEXTURE_SET_CUBEMAP_QUARTER_RES, SKY_TEXTURE_SET_MAX }; enum SkyVersion { SKY_VERSION_BACKGROUND, SKY_VERSION_HALF_RES, SKY_VERSION_QUARTER_RES, SKY_VERSION_CUBEMAP, SKY_VERSION_CUBEMAP_HALF_RES, SKY_VERSION_CUBEMAP_QUARTER_RES, SKY_VERSION_BACKGROUND_MULTIVIEW, SKY_VERSION_HALF_RES_MULTIVIEW, SKY_VERSION_QUARTER_RES_MULTIVIEW, SKY_VERSION_MAX }; struct SkyPushConstant { float orientation[12]; // 48 - 48 float projection[4]; // 16 - 64 float position[3]; // 12 - 76 float time; // 4 - 80 float pad[3]; // 12 - 92 float luminance_multiplier; // 4 - 96 // 128 is the max size of a push constant. We can replace "pad" but we can't add any more. }; struct SkyShaderData : public RendererRD::MaterialStorage::ShaderData { bool valid = false; RID version; PipelineCacheRD pipelines[SKY_VERSION_MAX]; Vector texture_uniforms; Vector ubo_offsets; uint32_t ubo_size = 0; String code; bool uses_time = false; bool uses_position = false; bool uses_half_res = false; bool uses_quarter_res = false; bool uses_light = false; virtual void set_code(const String &p_Code); virtual bool is_animated() const; virtual bool casts_shadows() const; virtual RS::ShaderNativeSourceCode get_native_source_code() const; SkyShaderData() {} virtual ~SkyShaderData(); }; void _render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, const Projection &p_projection, const Basis &p_orientation, const Vector3 &p_position, float p_luminance_multiplier); public: struct SkySceneState { struct UBO { float view_inv_projections[RendererSceneRender::MAX_RENDER_VIEWS][16]; // 2 x 64 - 128 float view_eye_offsets[RendererSceneRender::MAX_RENDER_VIEWS][4]; // 2 x 16 - 160 uint32_t volumetric_fog_enabled; // 4 - 164 float volumetric_fog_inv_length; // 4 - 168 float volumetric_fog_detail_spread; // 4 - 172 float volumetric_fog_sky_affect; // 4 - 176 uint32_t fog_enabled; // 4 - 180 float fog_sky_affect; // 4 - 184 float fog_density; // 4 - 188 float fog_sun_scatter; // 4 - 192 float fog_light_color[3]; // 12 - 204 float fog_aerial_perspective; // 4 - 208 float z_far; // 4 - 212 uint32_t directional_light_count; // 4 - 216 uint32_t pad1; // 4 - 220 uint32_t pad2; // 4 - 224 }; UBO ubo; uint32_t view_count = 1; Transform3D cam_transform; Projection cam_projection; SkyDirectionalLightData *directional_lights = nullptr; SkyDirectionalLightData *last_frame_directional_lights = nullptr; uint32_t max_directional_lights; uint32_t last_frame_directional_light_count; RID directional_light_buffer; RID uniform_set; RID uniform_buffer; RID fog_uniform_set; RID default_fog_uniform_set; RID fog_shader; RID fog_material; RID fog_only_texture_uniform_set; } sky_scene_state; struct ReflectionData { struct Layer { struct Mipmap { RID framebuffers[6]; RID views[6]; Size2i size; }; Vector mipmaps; //per-face view Vector views; // per-cubemap view }; struct DownsampleLayer { struct Mipmap { RID view; Size2i size; // for mobile only RID views[6]; RID framebuffers[6]; }; Vector mipmaps; }; RID radiance_base_cubemap; //cubemap for first layer, first cubemap RID downsampled_radiance_cubemap; DownsampleLayer downsampled_layer; RID coefficient_buffer; bool dirty = true; Vector layers; void clear_reflection_data(); void update_reflection_data(int p_size, int p_mipmaps, bool p_use_array, RID p_base_cube, int p_base_layer, bool p_low_quality, int p_roughness_layers, RD::DataFormat p_texture_format); void create_reflection_fast_filter(bool p_use_arrays); void create_reflection_importance_sample(bool p_use_arrays, int p_cube_side, int p_base_layer, uint32_t p_sky_ggx_samples_quality); void update_reflection_mipmaps(int p_start, int p_end); }; /* Sky shader */ struct SkyShader { SkyShaderRD shader; ShaderCompiler compiler; RID default_shader; RID default_material; RID default_shader_rd; } sky_shader; struct SkyMaterialData : public RendererRD::MaterialStorage::MaterialData { SkyShaderData *shader_data = nullptr; RID uniform_set; bool uniform_set_updated; virtual void set_render_priority(int p_priority) {} virtual void set_next_pass(RID p_pass) {} virtual bool update_parameters(const HashMap &p_parameters, bool p_uniform_dirty, bool p_textures_dirty); virtual ~SkyMaterialData(); }; struct Sky { RID radiance; RID quarter_res_pass; RID quarter_res_framebuffer; Size2i screen_size; RID uniform_set; RID material; RID uniform_buffer; int radiance_size = 256; RS::SkyMode mode = RS::SKY_MODE_AUTOMATIC; ReflectionData reflection; bool dirty = false; int processing_layer = 0; Sky *dirty_list = nullptr; float baked_exposure = 1.0; //State to track when radiance cubemap needs updating SkyMaterialData *prev_material = nullptr; Vector3 prev_position; float prev_time; void free(); RID get_textures(SkyTextureSetVersion p_version, RID p_default_shader_rd, Ref p_render_buffers); bool set_radiance_size(int p_radiance_size); bool set_mode(RS::SkyMode p_mode); bool set_material(RID p_material); Ref bake_panorama(float p_energy, int p_roughness_layers, const Size2i &p_size); }; uint32_t sky_ggx_samples_quality; bool sky_use_cubemap_array; Sky *dirty_sky_list = nullptr; mutable RID_Owner sky_owner; int roughness_layers; RendererRD::MaterialStorage::ShaderData *_create_sky_shader_func(); static RendererRD::MaterialStorage::ShaderData *_create_sky_shader_funcs(); RendererRD::MaterialStorage::MaterialData *_create_sky_material_func(SkyShaderData *p_shader); static RendererRD::MaterialStorage::MaterialData *_create_sky_material_funcs(RendererRD::MaterialStorage::ShaderData *p_shader); SkyRD(); void init(); void set_texture_format(RD::DataFormat p_texture_format); ~SkyRD(); void setup_sky(RID p_env, Ref p_render_buffers, const PagedArray &p_lights, RID p_camera_attributes, uint32_t p_view_count, const Projection *p_view_projections, const Vector3 *p_view_eye_offsets, const Transform3D &p_cam_transform, const Size2i p_screen_size, RendererSceneRenderRD *p_scene_render); void update_radiance_buffers(Ref p_render_buffers, RID p_env, const Vector3 &p_global_pos, double p_time, float p_luminance_multiplier = 1.0); void update_res_buffers(Ref p_render_buffers, RID p_env, double p_time, float p_luminance_multiplier = 1.0); void draw_sky(RD::DrawListID p_draw_list, Ref p_render_buffers, RID p_env, RID p_fb, double p_time, float p_luminance_multiplier = 1.0); void invalidate_sky(Sky *p_sky); void update_dirty_skys(); RID sky_get_material(RID p_sky) const; RID sky_get_radiance_texture_rd(RID p_sky) const; float sky_get_baked_exposure(RID p_sky) const; RID allocate_sky_rid(); void initialize_sky_rid(RID p_rid); Sky *get_sky(RID p_sky) const; void free_sky(RID p_sky); void sky_set_radiance_size(RID p_sky, int p_radiance_size); void sky_set_mode(RID p_sky, RS::SkyMode p_mode); void sky_set_material(RID p_sky, RID p_material); Ref sky_bake_panorama(RID p_sky, float p_energy, bool p_bake_irradiance, const Size2i &p_size); }; } // namespace RendererRD #endif // SKY_RD_H