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godot/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h
JFonS c571e4a7f4 Implement distance fade and transparency 
The built-in ALPHA in spatial shaders comes pre-set with a per-instance
transparency value. Multiply by it if you want to keep it.

The transparency value of any given GeometryInstance3D is affected by:
   - Its new "transparency" property.
   - Its own visiblity range when the new "visibility_range_fade_mode"
     property is set to "Self".
   - Its parent visibility range when the parent's fade mode is
     set to "Dependencies".

The "Self" mode will fade-out the instance when reaching the visibility
range limits, while the "Dependencies" mode will fade-in its
dependencies.

Per-instance transparency is only implemented in the forward clustered
renderer, support for mobile should be added in the future.

Co-authored-by: reduz <reduzio@gmail.com>
2021-10-25 11:39:34 +02:00

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/*************************************************************************/
/* scene_shader_forward_clustered.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 RSSR_SCENE_SHADER_FC_H
#define RSSR_SCENE_SHADER_FC_H
#include "servers/rendering/renderer_rd/renderer_scene_render_rd.h"
#include "servers/rendering/renderer_rd/renderer_storage_rd.h"
#include "servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl.gen.h"
namespace RendererSceneRenderImplementation {
class SceneShaderForwardClustered {
private:
static SceneShaderForwardClustered *singleton;
public:
RendererStorageRD *storage;
enum ShaderVersion {
SHADER_VERSION_DEPTH_PASS,
SHADER_VERSION_DEPTH_PASS_DP,
SHADER_VERSION_DEPTH_PASS_WITH_NORMAL_AND_ROUGHNESS,
SHADER_VERSION_DEPTH_PASS_WITH_NORMAL_AND_ROUGHNESS_AND_VOXEL_GI,
SHADER_VERSION_DEPTH_PASS_WITH_MATERIAL,
SHADER_VERSION_DEPTH_PASS_WITH_SDF,
SHADER_VERSION_COLOR_PASS,
SHADER_VERSION_COLOR_PASS_WITH_SEPARATE_SPECULAR,
SHADER_VERSION_LIGHTMAP_COLOR_PASS,
SHADER_VERSION_LIGHTMAP_COLOR_PASS_WITH_SEPARATE_SPECULAR,
SHADER_VERSION_MAX
};
enum PipelineVersion {
PIPELINE_VERSION_DEPTH_PASS,
PIPELINE_VERSION_DEPTH_PASS_DP,
PIPELINE_VERSION_DEPTH_PASS_WITH_NORMAL_AND_ROUGHNESS,
PIPELINE_VERSION_DEPTH_PASS_WITH_NORMAL_AND_ROUGHNESS_AND_VOXEL_GI,
PIPELINE_VERSION_DEPTH_PASS_WITH_MATERIAL,
PIPELINE_VERSION_DEPTH_PASS_WITH_SDF,
PIPELINE_VERSION_OPAQUE_PASS,
PIPELINE_VERSION_OPAQUE_PASS_WITH_SEPARATE_SPECULAR,
PIPELINE_VERSION_TRANSPARENT_PASS,
PIPELINE_VERSION_LIGHTMAP_OPAQUE_PASS,
PIPELINE_VERSION_LIGHTMAP_OPAQUE_PASS_WITH_SEPARATE_SPECULAR,
PIPELINE_VERSION_LIGHTMAP_TRANSPARENT_PASS,
PIPELINE_VERSION_MAX
};
enum ShaderSpecializations {
SHADER_SPECIALIZATION_FORWARD_GI = 1 << 0,
SHADER_SPECIALIZATION_PROJECTOR = 1 << 1,
SHADER_SPECIALIZATION_SOFT_SHADOWS = 1 << 2,
SHADER_SPECIALIZATION_DIRECTIONAL_SOFT_SHADOWS = 1 << 3,
};
struct ShaderData : public RendererStorageRD::ShaderData {
enum BlendMode { //used internally
BLEND_MODE_MIX,
BLEND_MODE_ADD,
BLEND_MODE_SUB,
BLEND_MODE_MUL,
BLEND_MODE_ALPHA_TO_COVERAGE
};
enum DepthDraw {
DEPTH_DRAW_DISABLED,
DEPTH_DRAW_OPAQUE,
DEPTH_DRAW_ALWAYS
};
enum DepthTest {
DEPTH_TEST_DISABLED,
DEPTH_TEST_ENABLED
};
enum Cull {
CULL_DISABLED,
CULL_FRONT,
CULL_BACK
};
enum CullVariant {
CULL_VARIANT_NORMAL,
CULL_VARIANT_REVERSED,
CULL_VARIANT_DOUBLE_SIDED,
CULL_VARIANT_MAX
};
enum AlphaAntiAliasing {
ALPHA_ANTIALIASING_OFF,
ALPHA_ANTIALIASING_ALPHA_TO_COVERAGE,
ALPHA_ANTIALIASING_ALPHA_TO_COVERAGE_AND_TO_ONE
};
bool valid;
RID version;
uint32_t vertex_input_mask;
PipelineCacheRD pipelines[CULL_VARIANT_MAX][RS::PRIMITIVE_MAX][PIPELINE_VERSION_MAX];
String path;
Map<StringName, ShaderLanguage::ShaderNode::Uniform> uniforms;
Vector<ShaderCompilerRD::GeneratedCode::Texture> texture_uniforms;
Vector<uint32_t> ubo_offsets;
uint32_t ubo_size;
String code;
Map<StringName, RID> default_texture_params;
DepthDraw depth_draw;
DepthTest depth_test;
bool uses_point_size;
bool uses_alpha;
bool uses_blend_alpha;
bool uses_alpha_clip;
bool uses_depth_pre_pass;
bool uses_discard;
bool uses_roughness;
bool uses_normal;
bool uses_particle_trails;
bool unshaded;
bool uses_vertex;
bool uses_position;
bool uses_sss;
bool uses_transmittance;
bool uses_screen_texture;
bool uses_depth_texture;
bool uses_normal_texture;
bool uses_time;
bool writes_modelview_or_projection;
bool uses_world_coordinates;
uint64_t last_pass = 0;
uint32_t index = 0;
virtual void set_code(const String &p_Code);
virtual void set_default_texture_param(const StringName &p_name, RID p_texture);
virtual void get_param_list(List<PropertyInfo> *p_param_list) const;
void get_instance_param_list(List<RendererStorage::InstanceShaderParam> *p_param_list) const;
virtual bool is_param_texture(const StringName &p_param) const;
virtual bool is_animated() const;
virtual bool casts_shadows() const;
virtual Variant get_default_parameter(const StringName &p_parameter) const;
virtual RS::ShaderNativeSourceCode get_native_source_code() const;
SelfList<ShaderData> shader_list_element;
ShaderData();
virtual ~ShaderData();
};
SelfList<ShaderData>::List shader_list;
RendererStorageRD::ShaderData *_create_shader_func();
static RendererStorageRD::ShaderData *_create_shader_funcs() {
return static_cast<SceneShaderForwardClustered *>(singleton)->_create_shader_func();
}
struct MaterialData : public RendererStorageRD::MaterialData {
uint64_t last_frame;
ShaderData *shader_data;
RID uniform_set;
uint64_t last_pass = 0;
uint32_t index = 0;
RID next_pass;
uint8_t priority;
virtual void set_render_priority(int p_priority);
virtual void set_next_pass(RID p_pass);
virtual bool update_parameters(const Map<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
virtual ~MaterialData();
};
RendererStorageRD::MaterialData *_create_material_func(ShaderData *p_shader);
static RendererStorageRD::MaterialData *_create_material_funcs(RendererStorageRD::ShaderData *p_shader) {
return static_cast<SceneShaderForwardClustered *>(singleton)->_create_material_func(static_cast<ShaderData *>(p_shader));
}
SceneForwardClusteredShaderRD shader;
ShaderCompilerRD compiler;
RID default_shader;
RID default_material;
RID overdraw_material_shader;
RID overdraw_material;
RID default_shader_rd;
RID default_shader_sdfgi_rd;
RID default_vec4_xform_buffer;
RID default_vec4_xform_uniform_set;
RID shadow_sampler;
RID default_material_uniform_set;
ShaderData *default_material_shader_ptr = nullptr;
RID overdraw_material_uniform_set;
ShaderData *overdraw_material_shader_ptr = nullptr;
Vector<RD::PipelineSpecializationConstant> default_specialization_constants;
SceneShaderForwardClustered();
~SceneShaderForwardClustered();
void init(RendererStorageRD *p_storage, const String p_defines);
void set_default_specialization_constants(const Vector<RD::PipelineSpecializationConstant> &p_constants);
};
} // namespace RendererSceneRenderImplementation
#endif // !RSSR_SCENE_SHADER_FM_H
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