initial commit, 4.5 stable

scene/resources/canvas_item_material.h

@@ -0,0 +1,150 @@
+/**************************************************************************/
+/*  canvas_item_material.h                                                */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* 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.                 */
+/**************************************************************************/
+
+#pragma once
+
+#include "scene/resources/material.h"
+
+class CanvasItemMaterial : public Material {
+	GDCLASS(CanvasItemMaterial, Material);
+
+public:
+	enum BlendMode {
+		BLEND_MODE_MIX,
+		BLEND_MODE_ADD,
+		BLEND_MODE_SUB,
+		BLEND_MODE_MUL,
+		BLEND_MODE_PREMULT_ALPHA,
+		BLEND_MODE_DISABLED
+	};
+
+	enum LightMode {
+		LIGHT_MODE_NORMAL,
+		LIGHT_MODE_UNSHADED,
+		LIGHT_MODE_LIGHT_ONLY
+	};
+
+private:
+	union MaterialKey {
+		struct {
+			uint32_t blend_mode : 4;
+			uint32_t light_mode : 4;
+			uint32_t particles_animation : 1;
+			uint32_t invalid_key : 1;
+		};
+
+		uint32_t key = 0;
+
+		static uint32_t hash(const MaterialKey &p_key) {
+			return hash_murmur3_one_32(p_key.key);
+		}
+		bool operator==(const MaterialKey &p_key) const {
+			return key == p_key.key;
+		}
+	};
+
+	struct ShaderNames {
+		StringName particles_anim_h_frames;
+		StringName particles_anim_v_frames;
+		StringName particles_anim_loop;
+	};
+
+	static ShaderNames *shader_names;
+
+	struct ShaderData {
+		RID shader;
+		int users = 0;
+	};
+
+	static HashMap<MaterialKey, ShaderData, MaterialKey> shader_map;
+
+	MaterialKey current_key;
+
+	_FORCE_INLINE_ MaterialKey _compute_key() const {
+		MaterialKey mk;
+		mk.key = 0;
+		mk.blend_mode = blend_mode;
+		mk.light_mode = light_mode;
+		mk.particles_animation = particles_animation;
+		return mk;
+	}
+
+	static Mutex material_mutex;
+	static SelfList<CanvasItemMaterial>::List dirty_materials;
+	SelfList<CanvasItemMaterial> element;
+
+	void _update_shader();
+	_FORCE_INLINE_ void _queue_shader_change();
+
+	BlendMode blend_mode = BLEND_MODE_MIX;
+	LightMode light_mode = LIGHT_MODE_NORMAL;
+	bool particles_animation = false;
+
+	// Proper values set in constructor.
+	int particles_anim_h_frames = 0;
+	int particles_anim_v_frames = 0;
+	bool particles_anim_loop = false;
+
+protected:
+	static void _bind_methods();
+	void _validate_property(PropertyInfo &p_property) const;
+
+public:
+	void set_blend_mode(BlendMode p_blend_mode);
+	BlendMode get_blend_mode() const;
+
+	void set_light_mode(LightMode p_light_mode);
+	LightMode get_light_mode() const;
+
+	void set_particles_animation(bool p_particles_anim);
+	bool get_particles_animation() const;
+
+	void set_particles_anim_h_frames(int p_frames);
+	int get_particles_anim_h_frames() const;
+	void set_particles_anim_v_frames(int p_frames);
+	int get_particles_anim_v_frames() const;
+
+	void set_particles_anim_loop(bool p_loop);
+	bool get_particles_anim_loop() const;
+
+	static void init_shaders();
+	static void finish_shaders();
+	static void flush_changes();
+
+	virtual RID get_shader_rid() const override;
+
+	virtual Shader::Mode get_shader_mode() const override;
+
+	CanvasItemMaterial();
+	virtual ~CanvasItemMaterial();
+};
+
+VARIANT_ENUM_CAST(CanvasItemMaterial::BlendMode)
+VARIANT_ENUM_CAST(CanvasItemMaterial::LightMode)