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Implement built-in classes Vector4, Vector4i and Projection. * Two versions of Vector4 (float and integer). * A Projection class, which is a 4x4 matrix specialized in projection types. These types have been requested for a long time, but given they were very corner case they were not added before. Because in Godot 4, reimplementing parts of the rendering engine is now possible, access to these types (heavily used by the rendering code) becomes a necessity. **Q**: Why Projection and not Matrix4? **A**: Godot does not use Matrix2, Matrix3, Matrix4x3, etc. naming convention because, within the engine, these types always have a *purpose*. As such, Godot names them: Transform2D, Transform3D or Basis. In this case, this 4x4 matrix is _always_ used as a _Projection_, hence the naming.
266 lines
9.7 KiB
C++
266 lines
9.7 KiB
C++
/*************************************************************************/
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/* rasterizer_canvas_gles3.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) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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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 RASTERIZER_CANVAS_OPENGL_H
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#define RASTERIZER_CANVAS_OPENGL_H
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#ifdef GLES3_ENABLED
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#include "rasterizer_scene_gles3.h"
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#include "servers/rendering/renderer_canvas_render.h"
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#include "servers/rendering/renderer_compositor.h"
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#include "storage/material_storage.h"
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#include "storage/texture_storage.h"
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#include "shaders/canvas.glsl.gen.h"
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class RasterizerSceneGLES3;
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class RasterizerCanvasGLES3 : public RendererCanvasRender {
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static RasterizerCanvasGLES3 *singleton;
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_FORCE_INLINE_ void _update_transform_2d_to_mat2x4(const Transform2D &p_transform, float *p_mat2x4);
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_FORCE_INLINE_ void _update_transform_2d_to_mat2x3(const Transform2D &p_transform, float *p_mat2x3);
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_FORCE_INLINE_ void _update_transform_2d_to_mat4(const Transform2D &p_transform, float *p_mat4);
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_FORCE_INLINE_ void _update_transform_to_mat4(const Transform3D &p_transform, float *p_mat4);
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enum {
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FLAGS_INSTANCING_MASK = 0x7F,
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FLAGS_INSTANCING_HAS_COLORS = (1 << 7),
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FLAGS_INSTANCING_HAS_CUSTOM_DATA = (1 << 8),
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FLAGS_CLIP_RECT_UV = (1 << 9),
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FLAGS_TRANSPOSE_RECT = (1 << 10),
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FLAGS_NINEPACH_DRAW_CENTER = (1 << 12),
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FLAGS_USING_PARTICLES = (1 << 13),
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FLAGS_USE_SKELETON = (1 << 15),
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FLAGS_NINEPATCH_H_MODE_SHIFT = 16,
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FLAGS_NINEPATCH_V_MODE_SHIFT = 18,
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FLAGS_LIGHT_COUNT_SHIFT = 20,
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FLAGS_DEFAULT_NORMAL_MAP_USED = (1 << 26),
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FLAGS_DEFAULT_SPECULAR_MAP_USED = (1 << 27),
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FLAGS_USE_MSDF = (1 << 28),
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};
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enum {
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LIGHT_FLAGS_TEXTURE_MASK = 0xFFFF,
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LIGHT_FLAGS_BLEND_SHIFT = 16,
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LIGHT_FLAGS_BLEND_MASK = (3 << 16),
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LIGHT_FLAGS_BLEND_MODE_ADD = (0 << 16),
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LIGHT_FLAGS_BLEND_MODE_SUB = (1 << 16),
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LIGHT_FLAGS_BLEND_MODE_MIX = (2 << 16),
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LIGHT_FLAGS_BLEND_MODE_MASK = (3 << 16),
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LIGHT_FLAGS_HAS_SHADOW = (1 << 20),
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LIGHT_FLAGS_FILTER_SHIFT = 22
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};
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enum {
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MAX_RENDER_ITEMS = 256 * 1024,
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MAX_LIGHT_TEXTURES = 1024,
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MAX_LIGHTS_PER_ITEM = 16,
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DEFAULT_MAX_LIGHTS_PER_RENDER = 256,
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};
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public:
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enum {
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BASE_UNIFORM_LOCATION = 0,
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GLOBAL_UNIFORM_LOCATION = 1,
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LIGHT_UNIFORM_LOCATION = 2,
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INSTANCE_UNIFORM_LOCATION = 3,
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MATERIAL_UNIFORM_LOCATION = 4,
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};
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struct StateBuffer {
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float canvas_transform[16];
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float screen_transform[16];
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float canvas_normal_transform[16];
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float canvas_modulate[4];
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float screen_pixel_size[2];
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float time;
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uint32_t use_pixel_snap;
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float sdf_to_tex[4];
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float sdf_to_screen[2];
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float screen_to_sdf[2];
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uint32_t directional_light_count;
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float tex_to_sdf;
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uint32_t pad1;
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uint32_t pad2;
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};
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struct InstanceData {
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float world[6];
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float color_texture_pixel_size[2];
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union {
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//rect
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struct {
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float modulation[4];
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union {
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float msdf[4];
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float ninepatch_margins[4];
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};
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float dst_rect[4];
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float src_rect[4];
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float pad[2];
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};
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//primitive
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struct {
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float points[6]; // vec2 points[3]
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float uvs[6]; // vec2 points[3]
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uint32_t colors[6]; // colors encoded as half
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};
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};
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uint32_t flags;
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uint32_t specular_shininess;
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uint32_t lights[4];
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};
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struct Data {
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GLuint canvas_quad_vertices;
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GLuint canvas_quad_array;
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GLuint particle_quad_vertices;
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GLuint particle_quad_array;
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GLuint ninepatch_vertices;
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GLuint ninepatch_elements;
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} data;
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struct State {
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GLuint canvas_state_buffer;
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LocalVector<GLuint> canvas_instance_data_buffers;
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LocalVector<GLsync> fences;
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uint32_t current_buffer = 0;
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InstanceData *instance_data_array = nullptr;
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bool canvas_texscreen_used;
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RID canvas_shader_current_version;
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RID canvas_shader_default_version;
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RID current_tex = RID();
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Size2 current_pixel_size = Size2();
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RID current_normal = RID();
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RID current_specular = RID();
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GLES3::Texture *current_tex_ptr;
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RID current_shader_version = RID();
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RS::PrimitiveType current_primitive = RS::PRIMITIVE_MAX;
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uint32_t current_primitive_points = 0;
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Item::Command::Type current_command = Item::Command::TYPE_RECT;
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bool transparent_render_target = false;
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double time = 0.0;
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uint32_t max_lights_per_render;
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uint32_t max_lights_per_item;
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uint32_t max_instances_per_batch;
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RS::CanvasItemTextureFilter default_filter = RS::CANVAS_ITEM_TEXTURE_FILTER_DEFAULT;
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RS::CanvasItemTextureRepeat default_repeat = RS::CANVAS_ITEM_TEXTURE_REPEAT_DEFAULT;
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} state;
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Item *items[MAX_RENDER_ITEMS];
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RID default_canvas_texture;
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RID default_canvas_group_material;
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RID default_canvas_group_shader;
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typedef void Texture;
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void canvas_begin(RID p_to_render_target, bool p_to_backbuffer);
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//virtual void draw_window_margins(int *black_margin, RID *black_image) override;
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void draw_lens_distortion_rect(const Rect2 &p_rect, float p_k1, float p_k2, const Vector2 &p_eye_center, float p_oversample);
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void reset_canvas();
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void canvas_light_shadow_buffer_update(RID p_buffer, const Transform2D &p_light_xform, int p_light_mask, float p_near, float p_far, LightOccluderInstance *p_occluders, Projection *p_xform_cache);
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virtual void canvas_debug_viewport_shadows(Light *p_lights_with_shadow) override;
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RID light_create() override;
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void light_set_texture(RID p_rid, RID p_texture) override;
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void light_set_use_shadow(RID p_rid, bool p_enable) override;
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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) override;
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void light_update_directional_shadow(RID p_rid, int p_shadow_index, const Transform2D &p_light_xform, int p_light_mask, float p_cull_distance, const Rect2 &p_clip_rect, LightOccluderInstance *p_occluders) override;
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void render_sdf(RID p_render_target, LightOccluderInstance *p_occluders) override;
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RID occluder_polygon_create() override;
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void occluder_polygon_set_shape(RID p_occluder, const Vector<Vector2> &p_points, bool p_closed) override;
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void occluder_polygon_set_cull_mode(RID p_occluder, RS::CanvasOccluderPolygonCullMode p_mode) override;
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void set_shadow_texture_size(int p_size) override;
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bool free(RID p_rid) override;
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void update() override;
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void _bind_canvas_texture(RID p_texture, RS::CanvasItemTextureFilter p_base_filter, RS::CanvasItemTextureRepeat p_base_repeat, uint32_t &r_index);
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struct PolygonBuffers {
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GLuint vertex_buffer;
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GLuint vertex_array;
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GLuint index_buffer;
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int count;
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bool color_disabled = false;
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Color color;
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};
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struct {
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HashMap<PolygonID, PolygonBuffers> polygons;
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PolygonID last_id;
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} polygon_buffers;
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RendererCanvasRender::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>()) override;
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void free_polygon(PolygonID p_polygon) override;
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void canvas_render_items(RID p_to_render_target, Item *p_item_list, const Color &p_modulate, Light *p_light_list, Light *p_directional_list, const Transform2D &p_canvas_transform, RS::CanvasItemTextureFilter p_default_filter, RS::CanvasItemTextureRepeat p_default_repeat, bool p_snap_2d_vertices_to_pixel, bool &r_sdf_used) override;
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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);
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void _render_item(RID p_render_target, const Item *p_item, const Transform2D &p_canvas_transform_inverse, Item *¤t_clip, Light *p_lights, uint32_t &r_index);
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void _render_batch(uint32_t &p_max_index);
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void _bind_instance_data_buffer(uint32_t p_max_index);
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void _allocate_instance_data_buffer();
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void set_time(double p_time);
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static RasterizerCanvasGLES3 *get_singleton();
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RasterizerCanvasGLES3();
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~RasterizerCanvasGLES3();
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};
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#endif // GLES3_ENABLED
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#endif // RASTERIZER_CANVAS_OPENGL_H
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