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virtualx-engine/servers/rendering/rasterizer_rd/rasterizer_canvas_rd.h
reduz 0e6664539d Refactor pixel snapping. 
-Rename pixel_snap to snap_2d_to_vertices
-Added snap_2d_to_transforms which is more useful

Fixes #41814
Solves proposal https://github.com/godotengine/godot-proposals/issues/1666
Supersedes #35606, supersedes #41535, supersedes #41534
2020-10-30 08:57:32 -03:00

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/*************************************************************************/
/* rasterizer_canvas_rd.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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 RASTERIZER_CANVAS_RD_H
#define RASTERIZER_CANVAS_RD_H
#include "servers/rendering/rasterizer.h"
#include "servers/rendering/rasterizer_rd/rasterizer_storage_rd.h"
#include "servers/rendering/rasterizer_rd/render_pipeline_vertex_format_cache_rd.h"
#include "servers/rendering/rasterizer_rd/shader_compiler_rd.h"
#include "servers/rendering/rasterizer_rd/shaders/canvas.glsl.gen.h"
#include "servers/rendering/rasterizer_rd/shaders/canvas_occlusion.glsl.gen.h"
#include "servers/rendering/rendering_device.h"
class RasterizerCanvasRD : public RasterizerCanvas {
RasterizerStorageRD *storage;
enum {
BASE_UNIFORM_SET = 0,
MATERIAL_UNIFORM_SET = 1,
TRANSFORMS_UNIFORM_SET = 2,
CANVAS_TEXTURE_UNIFORM_SET = 3,
};
enum ShaderVariant {
SHADER_VARIANT_QUAD,
SHADER_VARIANT_NINEPATCH,
SHADER_VARIANT_PRIMITIVE,
SHADER_VARIANT_PRIMITIVE_POINTS,
SHADER_VARIANT_ATTRIBUTES,
SHADER_VARIANT_ATTRIBUTES_POINTS,
SHADER_VARIANT_QUAD_LIGHT,
SHADER_VARIANT_NINEPATCH_LIGHT,
SHADER_VARIANT_PRIMITIVE_LIGHT,
SHADER_VARIANT_PRIMITIVE_POINTS_LIGHT,
SHADER_VARIANT_ATTRIBUTES_LIGHT,
SHADER_VARIANT_ATTRIBUTES_POINTS_LIGHT,
SHADER_VARIANT_MAX
};
enum {
FLAGS_INSTANCING_STRIDE_MASK = 0xF,
FLAGS_INSTANCING_ENABLED = (1 << 4),
FLAGS_INSTANCING_HAS_COLORS = (1 << 5),
FLAGS_INSTANCING_COLOR_8BIT = (1 << 6),
FLAGS_INSTANCING_HAS_CUSTOM_DATA = (1 << 7),
FLAGS_INSTANCING_CUSTOM_DATA_8_BIT = (1 << 8),
FLAGS_CLIP_RECT_UV = (1 << 9),
FLAGS_TRANSPOSE_RECT = (1 << 10),
FLAGS_USING_LIGHT_MASK = (1 << 11),
FLAGS_NINEPACH_DRAW_CENTER = (1 << 12),
FLAGS_USING_PARTICLES = (1 << 13),
FLAGS_USE_SKELETON = (1 << 15),
FLAGS_NINEPATCH_H_MODE_SHIFT = 16,
FLAGS_NINEPATCH_V_MODE_SHIFT = 18,
FLAGS_LIGHT_COUNT_SHIFT = 20,
FLAGS_DEFAULT_NORMAL_MAP_USED = (1 << 26),
FLAGS_DEFAULT_SPECULAR_MAP_USED = (1 << 27)
};
enum {
LIGHT_FLAGS_TEXTURE_MASK = 0xFFFF,
LIGHT_FLAGS_BLEND_SHIFT = 16,
LIGHT_FLAGS_BLEND_MASK = (3 << 16),
LIGHT_FLAGS_BLEND_MODE_ADD = (0 << 16),
LIGHT_FLAGS_BLEND_MODE_SUB = (1 << 16),
LIGHT_FLAGS_BLEND_MODE_MIX = (2 << 16),
LIGHT_FLAGS_BLEND_MODE_MASK = (3 << 16),
LIGHT_FLAGS_HAS_SHADOW = (1 << 20),
LIGHT_FLAGS_FILTER_SHIFT = 22
};
enum {
MAX_RENDER_ITEMS = 256 * 1024,
MAX_LIGHT_TEXTURES = 1024,
MAX_LIGHTS_PER_ITEM = 16,
DEFAULT_MAX_LIGHTS_PER_RENDER = 256
};
/****************/
/**** SHADER ****/
/****************/
enum PipelineVariant {
PIPELINE_VARIANT_QUAD,
PIPELINE_VARIANT_NINEPATCH,
PIPELINE_VARIANT_PRIMITIVE_TRIANGLES,
PIPELINE_VARIANT_PRIMITIVE_LINES,
PIPELINE_VARIANT_PRIMITIVE_POINTS,
PIPELINE_VARIANT_ATTRIBUTE_TRIANGLES,
PIPELINE_VARIANT_ATTRIBUTE_TRIANGLE_STRIP,
PIPELINE_VARIANT_ATTRIBUTE_LINES,
PIPELINE_VARIANT_ATTRIBUTE_LINES_STRIP,
PIPELINE_VARIANT_ATTRIBUTE_POINTS,
PIPELINE_VARIANT_MAX
};
enum PipelineLightMode {
PIPELINE_LIGHT_MODE_DISABLED,
PIPELINE_LIGHT_MODE_ENABLED,
PIPELINE_LIGHT_MODE_MAX
};
struct PipelineVariants {
RenderPipelineVertexFormatCacheRD variants[PIPELINE_LIGHT_MODE_MAX][PIPELINE_VARIANT_MAX];
};
struct {
CanvasShaderRD canvas_shader;
RID default_version;
RID default_version_rd_shader;
RID quad_index_buffer;
RID quad_index_array;
PipelineVariants pipeline_variants;
// default_skeleton uniform set
RID default_skeleton_uniform_buffer;
RID default_skeleton_texture_buffer;
ShaderCompilerRD compiler;
} shader;
struct ShaderData : public RasterizerStorageRD::ShaderData {
enum BlendMode { //used internally
BLEND_MODE_MIX,
BLEND_MODE_ADD,
BLEND_MODE_SUB,
BLEND_MODE_MUL,
BLEND_MODE_PMALPHA,
BLEND_MODE_DISABLED,
};
enum LightMode {
LIGHT_MODE_NORMAL,
LIGHT_MODE_UNSHADED,
LIGHT_MODE_LIGHT_ONLY
};
bool valid;
RID version;
PipelineVariants pipeline_variants;
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;
bool uses_screen_texture;
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;
virtual void get_instance_param_list(List<RasterizerStorage::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;
ShaderData();
virtual ~ShaderData();
};
RasterizerStorageRD::ShaderData *_create_shader_func();
static RasterizerStorageRD::ShaderData *_create_shader_funcs() {
return static_cast<RasterizerCanvasRD *>(singleton)->_create_shader_func();
}
struct MaterialData : public RasterizerStorageRD::MaterialData {
uint64_t last_frame;
ShaderData *shader_data;
RID uniform_buffer;
RID uniform_set;
Vector<RID> texture_cache;
Vector<uint8_t> ubo_data;
virtual void set_render_priority(int p_priority) {}
virtual void set_next_pass(RID p_pass) {}
virtual void update_parameters(const Map<StringName, Variant> &p_parameters, bool p_uniform_dirty, bool p_textures_dirty);
virtual ~MaterialData();
};
RasterizerStorageRD::MaterialData *_create_material_func(ShaderData *p_shader);
static RasterizerStorageRD::MaterialData *_create_material_funcs(RasterizerStorageRD::ShaderData *p_shader) {
return static_cast<RasterizerCanvasRD *>(singleton)->_create_material_func(static_cast<ShaderData *>(p_shader));
}
/**************************/
/**** CANVAS TEXTURES *****/
/**************************/
struct {
RS::CanvasItemTextureFilter default_filter;
RS::CanvasItemTextureRepeat default_repeat;
} default_samplers;
/******************/
/**** POLYGONS ****/
/******************/
struct PolygonBuffers {
RD::VertexFormatID vertex_format_id;
RID vertex_buffer;
RID vertex_array;
RID index_buffer;
RID indices;
};
struct {
HashMap<PolygonID, PolygonBuffers> polygons;
PolygonID last_id;
} polygon_buffers;
/********************/
/**** PRIMITIVES ****/
/********************/
struct {
RID index_array[4];
} primitive_arrays;
/*******************/
/**** MATERIALS ****/
/*******************/
/******************/
/**** LIGHTING ****/
/******************/
struct CanvasLight {
RID texture;
struct {
bool enabled = false;
float z_far;
float y_offset;
} shadow;
};
RID_Owner<CanvasLight> canvas_light_owner;
struct ShadowRenderPushConstant {
float projection[16];
float modelview[8];
float direction[2];
float z_far;
float pad;
};
struct OccluderPolygon {
RS::CanvasOccluderPolygonCullMode cull_mode;
int point_count;
RID vertex_buffer;
RID vertex_array;
RID index_buffer;
RID index_array;
};
struct LightUniform {
float matrix[8]; //light to texture coordinate matrix
float shadow_matrix[8]; //light to shadow coordinate matrix
float color[4];
uint8_t shadow_color[4];
uint32_t flags; //index to light texture
float shadow_pixel_size;
float height;
float position[2];
float shadow_z_far_inv;
float shadow_y_ofs;
float atlas_rect[4];
};
RID_Owner<OccluderPolygon> occluder_polygon_owner;
struct {
CanvasOcclusionShaderRD shader;
RID shader_version;
RID render_pipelines[3];
RD::VertexFormatID vertex_format;
RD::FramebufferFormatID framebuffer_format;
} shadow_render;
/***************/
/**** STATE ****/
/***************/
//state that does not vary across rendering all items
struct State {
//state buffer
struct Buffer {
float canvas_transform[16];
float screen_transform[16];
float canvas_normal_transform[16];
float canvas_modulate[4];
float screen_pixel_size[2];
float time;
uint32_t use_pixel_snap;
//uint32_t light_count;
//uint32_t pad[3];
};
LightUniform *light_uniforms;
RID lights_uniform_buffer;
RID canvas_state_buffer;
RID shadow_sampler;
RID shadow_texture;
RID shadow_depth_texture;
RID shadow_fb;
int shadow_texture_size = 2048;
RID default_transforms_uniform_set;
uint32_t max_lights_per_render;
uint32_t max_lights_per_item;
double time;
} state;
struct PushConstant {
float world[6];
uint32_t flags;
uint32_t specular_shininess;
union {
//rect
struct {
float modulation[4];
float ninepatch_margins[4];
float dst_rect[4];
float src_rect[4];
float pad[2];
};
//primitive
struct {
float points[6]; // vec2 points[3]
float uvs[6]; // vec2 points[3]
uint32_t colors[6]; // colors encoded as half
};
};
float color_texture_pixel_size[2];
uint32_t lights[4];
};
struct SkeletonUniform {
float skeleton_transform[16];
float skeleton_inverse[16];
};
Item *items[MAX_RENDER_ITEMS];
RID default_canvas_texture;
RID default_canvas_group_shader;
RID default_canvas_group_material;
RS::CanvasItemTextureFilter default_filter = RS::CANVAS_ITEM_TEXTURE_FILTER_LINEAR;
RS::CanvasItemTextureRepeat default_repeat = RS::CANVAS_ITEM_TEXTURE_REPEAT_DISABLED;
RID _create_base_uniform_set(RID p_to_render_target, bool p_backbuffer);
inline void _bind_canvas_texture(RD::DrawListID p_draw_list, RID p_texture, RS::CanvasItemTextureFilter p_base_filter, RS::CanvasItemTextureRepeat p_base_repeat, RID &r_last_texture, PushConstant &push_constant, Size2 &r_texpixel_size); //recursive, so regular inline used instead.
void _render_item(RenderingDevice::DrawListID p_draw_list, const Item *p_item, RenderingDevice::FramebufferFormatID p_framebuffer_format, const Transform2D &p_canvas_transform_inverse, Item *&current_clip, Light *p_lights, PipelineVariants *p_pipeline_variants);
void _render_items(RID p_to_render_target, int p_item_count, const Transform2D &p_canvas_transform_inverse, Light *p_lights, bool p_to_backbuffer = false);
_FORCE_INLINE_ void _update_transform_2d_to_mat2x4(const Transform2D &p_transform, float *p_mat2x4);
_FORCE_INLINE_ void _update_transform_2d_to_mat2x3(const Transform2D &p_transform, float *p_mat2x3);
_FORCE_INLINE_ void _update_transform_2d_to_mat4(const Transform2D &p_transform, float *p_mat4);
_FORCE_INLINE_ void _update_transform_to_mat4(const Transform &p_transform, float *p_mat4);
public:
PolygonID request_polygon(const Vector<int> &p_indices, const Vector<Point2> &p_points, const Vector<Color> &p_colors, const Vector<Point2> &p_uvs = Vector<Point2>(), const Vector<int> &p_bones = Vector<int>(), const Vector<float> &p_weights = Vector<float>());
void free_polygon(PolygonID p_polygon);
RID light_create();
void light_set_texture(RID p_rid, RID p_texture);
void light_set_use_shadow(RID p_rid, bool p_enable);
void light_update_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders);
RID occluder_polygon_create();
void occluder_polygon_set_shape_as_lines(RID p_occluder, const Vector<Vector2> &p_lines);
void occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode);
void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel);
void canvas_debug_viewport_shadows(Light *p_lights_with_shadow) {}
void draw_window_margins(int *p_margins, RID *p_margin_textures) {}
virtual void set_shadow_texture_size(int p_size);
void set_time(double p_time);
void update();
bool free(RID p_rid);
RasterizerCanvasRD(RasterizerStorageRD *p_storage);
~RasterizerCanvasRD();
};
#endif // RASTERIZER_CANVAS_RD_H
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