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https://github.com/godotengine/godot
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f8ab79e68a
This prevents the pitfall of UB when checking if they have been assigned something valid by comparing to nullptr.
289 lines
10 KiB
C++
289 lines
10 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 "rasterizer_storage_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/canvas_texture_storage.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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BASE_UNIFORM_BUFFER_OBJECT = 0,
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MATERIAL_UNIFORM_BUFFER_OBJECT = 1,
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TRANSFORMS_UNIFORM_BUFFER_OBJECT = 2,
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CANVAS_TEXTURE_UNIFORM_BUFFER_OBJECT = 3,
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};
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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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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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CanvasShaderGLES3 canvas_shader;
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RID canvas_shader_current_version;
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RID canvas_shader_default_version;
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//CanvasShadowShaderGLES3 canvas_shadow_shader;
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//LensDistortedShaderGLES3 lens_shader;
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bool using_texture_rect;
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bool using_ninepatch;
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bool using_skeleton;
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Transform2D skeleton_transform;
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Transform2D skeleton_transform_inverse;
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Size2i skeleton_texture_size;
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RID current_tex = RID();
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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 end_batch = false;
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Transform3D vp;
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Light *using_light = nullptr;
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bool using_shadow;
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bool using_transparent_rt;
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// FROM RD Renderer
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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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RasterizerSceneGLES3 *scene_render = nullptr;
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RasterizerStorageGLES3 *storage = nullptr;
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void _set_uniforms();
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void canvas_begin();
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void canvas_end();
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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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virtual void reset_canvas();
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virtual 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, CameraMatrix *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, RID &r_last_texture, Size2 &r_texpixel_size);
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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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};
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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 _end_batch(uint32_t &p_max_index);
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void _allocate_instance_data_buffer();
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void initialize();
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void finalize();
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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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