321 lines
11 KiB
C++
321 lines
11 KiB
C++
/**************************************************************************/
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/* sky.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef SKY_RD_H
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#define SKY_RD_H
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#include "core/templates/rid_owner.h"
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#include "servers/rendering/renderer_compositor.h"
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#include "servers/rendering/renderer_rd/pipeline_cache_rd.h"
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#include "servers/rendering/renderer_rd/shaders/environment/sky.glsl.gen.h"
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#include "servers/rendering/renderer_rd/storage_rd/material_storage.h"
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#include "servers/rendering/renderer_scene_render.h"
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#include "servers/rendering/rendering_device.h"
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#include "servers/rendering/shader_compiler.h"
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// Forward declare RendererSceneRenderRD so we can pass it into some of our methods, these classes are pretty tightly bound
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class RendererSceneRenderRD;
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class RenderSceneBuffersRD;
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namespace RendererRD {
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class SkyRD {
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public:
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enum SkySet {
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SKY_SET_UNIFORMS,
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SKY_SET_MATERIAL,
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SKY_SET_TEXTURES,
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SKY_SET_FOG,
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};
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const int SAMPLERS_BINDING_FIRST_INDEX = 4;
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// Skys need less info from Directional Lights than the normal shaders
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struct SkyDirectionalLightData {
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float direction[3];
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float energy;
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float color[3];
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float size;
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uint32_t enabled;
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uint32_t pad[3];
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};
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private:
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RD::DataFormat texture_format = RD::DATA_FORMAT_R16G16B16A16_SFLOAT;
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enum SkyTextureSetVersion {
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SKY_TEXTURE_SET_BACKGROUND,
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SKY_TEXTURE_SET_HALF_RES,
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SKY_TEXTURE_SET_QUARTER_RES,
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SKY_TEXTURE_SET_CUBEMAP,
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SKY_TEXTURE_SET_CUBEMAP_HALF_RES,
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SKY_TEXTURE_SET_CUBEMAP_QUARTER_RES,
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SKY_TEXTURE_SET_MAX
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};
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enum SkyVersion {
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SKY_VERSION_BACKGROUND,
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SKY_VERSION_HALF_RES,
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SKY_VERSION_QUARTER_RES,
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SKY_VERSION_CUBEMAP,
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SKY_VERSION_CUBEMAP_HALF_RES,
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SKY_VERSION_CUBEMAP_QUARTER_RES,
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SKY_VERSION_BACKGROUND_MULTIVIEW,
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SKY_VERSION_HALF_RES_MULTIVIEW,
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SKY_VERSION_QUARTER_RES_MULTIVIEW,
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SKY_VERSION_MAX
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};
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struct SkyPushConstant {
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float orientation[12]; // 48 - 48
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float projection[4]; // 16 - 64
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float position[3]; // 12 - 76
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float time; // 4 - 80
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float pad[3]; // 12 - 92
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float luminance_multiplier; // 4 - 96
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// 128 is the max size of a push constant. We can replace "pad" but we can't add any more.
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};
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struct SkyShaderData : public RendererRD::MaterialStorage::ShaderData {
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bool valid = false;
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RID version;
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PipelineCacheRD pipelines[SKY_VERSION_MAX];
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Vector<ShaderCompiler::GeneratedCode::Texture> texture_uniforms;
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Vector<uint32_t> ubo_offsets;
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uint32_t ubo_size = 0;
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String code;
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bool uses_time = false;
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bool uses_position = false;
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bool uses_half_res = false;
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bool uses_quarter_res = false;
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bool uses_light = false;
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virtual void set_code(const String &p_Code);
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virtual bool is_animated() const;
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virtual bool casts_shadows() const;
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virtual RS::ShaderNativeSourceCode get_native_source_code() const;
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SkyShaderData() {}
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virtual ~SkyShaderData();
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};
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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);
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public:
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struct SkySceneState {
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struct UBO {
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float combined_reprojection[RendererSceneRender::MAX_RENDER_VIEWS][16]; // 2 x 64 - 128
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float view_inv_projections[RendererSceneRender::MAX_RENDER_VIEWS][16]; // 2 x 64 - 256
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float view_eye_offsets[RendererSceneRender::MAX_RENDER_VIEWS][4]; // 2 x 16 - 288
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uint32_t volumetric_fog_enabled; // 4 - 292
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float volumetric_fog_inv_length; // 4 - 296
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float volumetric_fog_detail_spread; // 4 - 300
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float volumetric_fog_sky_affect; // 4 - 304
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uint32_t fog_enabled; // 4 - 308
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float fog_sky_affect; // 4 - 312
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float fog_density; // 4 - 316
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float fog_sun_scatter; // 4 - 320
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float fog_light_color[3]; // 12 - 332
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float fog_aerial_perspective; // 4 - 336
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float z_far; // 4 - 340
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uint32_t directional_light_count; // 4 - 344
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uint32_t pad1; // 4 - 348
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uint32_t pad2; // 4 - 352
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};
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UBO ubo;
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uint32_t view_count = 1;
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Transform3D cam_transform;
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Projection cam_projection;
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SkyDirectionalLightData *directional_lights = nullptr;
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SkyDirectionalLightData *last_frame_directional_lights = nullptr;
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uint32_t max_directional_lights;
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uint32_t last_frame_directional_light_count;
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RID directional_light_buffer;
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RID uniform_set;
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RID uniform_buffer;
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RID fog_uniform_set;
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RID default_fog_uniform_set;
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RID fog_shader;
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RID fog_material;
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RID fog_only_texture_uniform_set;
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} sky_scene_state;
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struct ReflectionData {
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struct Layer {
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struct Mipmap {
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RID framebuffers[6];
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RID views[6];
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Size2i size;
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};
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Vector<Mipmap> mipmaps; //per-face view
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Vector<RID> views; // per-cubemap view
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};
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struct DownsampleLayer {
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struct Mipmap {
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RID view;
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Size2i size;
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// for mobile only
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RID views[6];
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RID framebuffers[6];
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};
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Vector<Mipmap> mipmaps;
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};
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RID radiance_base_cubemap; //cubemap for first layer, first cubemap
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RID downsampled_radiance_cubemap;
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DownsampleLayer downsampled_layer;
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RID coefficient_buffer;
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bool dirty = true;
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Vector<Layer> layers;
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void clear_reflection_data();
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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);
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void create_reflection_fast_filter(bool p_use_arrays);
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void create_reflection_importance_sample(bool p_use_arrays, int p_cube_side, int p_base_layer, uint32_t p_sky_ggx_samples_quality);
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void update_reflection_mipmaps(int p_start, int p_end);
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};
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/* Sky shader */
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struct SkyShader {
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SkyShaderRD shader;
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ShaderCompiler compiler;
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RID default_shader;
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RID default_material;
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RID default_shader_rd;
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} sky_shader;
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struct SkyMaterialData : public RendererRD::MaterialStorage::MaterialData {
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SkyShaderData *shader_data = nullptr;
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RID uniform_set;
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bool uniform_set_updated;
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virtual void set_render_priority(int p_priority) {}
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virtual void set_next_pass(RID p_pass) {}
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virtual bool update_parameters(const HashMap<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
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virtual ~SkyMaterialData();
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};
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struct Sky {
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RID radiance;
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RID quarter_res_pass;
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RID quarter_res_framebuffer;
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Size2i screen_size;
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RID uniform_set;
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RID material;
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RID uniform_buffer;
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int radiance_size = 256;
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RS::SkyMode mode = RS::SKY_MODE_AUTOMATIC;
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ReflectionData reflection;
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bool dirty = false;
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int processing_layer = 0;
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Sky *dirty_list = nullptr;
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float baked_exposure = 1.0;
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//State to track when radiance cubemap needs updating
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SkyMaterialData *prev_material = nullptr;
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Vector3 prev_position;
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float prev_time;
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void free();
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RID get_textures(SkyTextureSetVersion p_version, RID p_default_shader_rd, Ref<RenderSceneBuffersRD> p_render_buffers);
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bool set_radiance_size(int p_radiance_size);
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bool set_mode(RS::SkyMode p_mode);
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bool set_material(RID p_material);
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Ref<Image> bake_panorama(float p_energy, int p_roughness_layers, const Size2i &p_size);
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};
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uint32_t sky_ggx_samples_quality;
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bool sky_use_cubemap_array;
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Sky *dirty_sky_list = nullptr;
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mutable RID_Owner<Sky, true> sky_owner;
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int roughness_layers;
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RendererRD::MaterialStorage::ShaderData *_create_sky_shader_func();
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static RendererRD::MaterialStorage::ShaderData *_create_sky_shader_funcs();
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RendererRD::MaterialStorage::MaterialData *_create_sky_material_func(SkyShaderData *p_shader);
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static RendererRD::MaterialStorage::MaterialData *_create_sky_material_funcs(RendererRD::MaterialStorage::ShaderData *p_shader);
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SkyRD();
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void init();
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void set_texture_format(RD::DataFormat p_texture_format);
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~SkyRD();
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void setup_sky(RID p_env, Ref<RenderSceneBuffersRD> p_render_buffers, const PagedArray<RID> &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 Projection &p_cam_projection, const Size2i p_screen_size, RendererSceneRenderRD *p_scene_render);
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void update_radiance_buffers(Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, const Vector3 &p_global_pos, double p_time, float p_luminance_multiplier = 1.0);
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void update_res_buffers(Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, double p_time, float p_luminance_multiplier = 1.0);
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void draw_sky(RD::DrawListID p_draw_list, Ref<RenderSceneBuffersRD> p_render_buffers, RID p_env, RID p_fb, double p_time, float p_luminance_multiplier = 1.0);
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void invalidate_sky(Sky *p_sky);
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void update_dirty_skys();
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RID sky_get_material(RID p_sky) const;
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RID sky_get_radiance_texture_rd(RID p_sky) const;
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float sky_get_baked_exposure(RID p_sky) const;
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RID allocate_sky_rid();
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void initialize_sky_rid(RID p_rid);
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Sky *get_sky(RID p_sky) const;
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void free_sky(RID p_sky);
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void sky_set_radiance_size(RID p_sky, int p_radiance_size);
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void sky_set_mode(RID p_sky, RS::SkyMode p_mode);
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void sky_set_material(RID p_sky, RID p_material);
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Ref<Image> sky_bake_panorama(RID p_sky, float p_energy, bool p_bake_irradiance, const Size2i &p_size);
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};
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} // namespace RendererRD
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#endif // SKY_RD_H
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