Reimplemented 2d drawing.

compile_linux.sh

@@ -49,6 +49,8 @@ ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/mate
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/mesh.cpp -o sfw/application/mesh.o
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/camera.cpp -o sfw/application/camera.o
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/mesh_instance.cpp -o sfw/application/mesh_instance.o
+ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/camera_2d.cpp -o sfw/application/camera_2d.o
+ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/mesh_instance_2d.cpp -o sfw/application/mesh_instance_2d.o
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/object_2d.cpp -o sfw/application/object_2d.o
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/sprite.cpp -o sfw/application/sprite.o
 ccache g++ -Wall -D_REENTRANT -g -Isfw -Isfw/application -c sfw/application/tile_map.cpp -o sfw/application/tile_map.o
@@ -68,6 +70,7 @@ ccache g++ -Wall -lm -ldl -lpthread -lX11  -D_REENTRANT -g sfw/aabb.o sfw/basis.
                         sfw/application/shader.o sfw/application/material.o sfw/application/mesh.o \
                         sfw/application/camera.o sfw/application/mesh_instance.o sfw/application/object_2d.o \
                         sfw/application/sprite.o sfw/application/tile_map.o sfw/application/texture.o \
+                        sfw/application/camera_2d.o sfw/application/mesh_instance_2d.o \
                         sfw/application/mesh_utils.o \
                         game_scene.o main.o \
                          -o game 

game_scene.cpp

@@ -116,7 +116,8 @@ void GameScene::render() {
 	rotmi += 0.01;
 	mi->render();
 
-	//sprite->render();
+	camera_2d->bind();
+	sprite->render();
 }
 
 GameScene::GameScene() {
@@ -134,23 +135,24 @@ GameScene::GameScene() {
 	//float ar = static_cast<float>(w) / static_cast<float>(h);
 	//camera->width = camera->height * ar;
 
-	//texture = new Texture();
-	//texture->load_image("icon.png");
+	texture = new Texture();
+	texture->load_image("icon.png");
 	//ha a textúrának van alpha csatornája:
 	//texture->load_image("download.bmp", GL_RGBA, GL_RGBA);
 
-	//material = new TextureMaterial();
-	//material->texture = texture;
+	material = new TextureMaterial2D();
+	material->texture = texture;
 
-	//sprite = new Sprite();
-	//sprite->mesh_instance->material = material;
-	//sprite->position.x = 0;
-	//sprite->position.y = 0;
+	sprite = new Sprite();
+	sprite->mesh_instance->material = material;
+	sprite->width = 500;
+	sprite->height = 500;
+	sprite->transform.set_origin(Vector2(250, 250));
 	//sprite->region_x = 7.0 * (1.0 / 16.0);
 	//sprite->region_y = 7.0 * (1.0 / 16.0);
 	//sprite->region_width = 1.0 / 16.0;
 	//sprite->region_height = 1.0 / 16.0;
-	//sprite->update_mesh();
+	sprite->update_mesh();
 	/*
 	tile_map = new TileMap();
 	tile_map->material = material;
@@ -179,7 +181,10 @@ GameScene::GameScene() {
 	//camera->position.y = 0;
 	//camera->position.z = -2;
 	camera->camera_transform.origin.z -= 2;
-	camera->screen_aspect_ratio = 1980.0 / 1080.0;
+	camera->screen_aspect_ratio = 1920.0 / 1080.0;
+
+	camera_2d = memnew(Camera2D);
+	camera_2d->size = Vector2(1920, 1080);
 
 	mesh = memnew(Mesh());
 	//cmaterial = memnew(ColoredMaterial());

game_scene.h

@@ -5,20 +5,23 @@
 
 /*
 
-#include "mesh_instance.h"
-#include "sprite.h"
+
+
 #include "texture.h"
 #include "texture_material.h"
 #include "tile_map.h"
 */
 
+#include "mesh_instance.h"
 #include "camera.h"
+#include "camera_2d.h"
 #include "color_material.h"
 #include "colored_material.h"
 #include "mesh.h"
 #include "sprite.h"
 #include "texture.h"
 #include "texture_material.h"
+#include "texture_material_2d.h"
 
 class GameScene : public Scene {
 public:
@@ -35,12 +38,12 @@ public:
 	bool down;
 	*/
 
-	/*
 	Texture *texture;
-	TextureMaterial *material;
+	TextureMaterial2D *material;
+
+	Camera2D *camera_2d;
 	//TileMap *tile_map;
 	Sprite *sprite;
-	*/
 
 	Camera *camera;
 	Mesh *mesh;

sfw/application/camera_2d.cpp

@@ -0,0 +1,26 @@
+#include "camera_2d.h"
+
+#include "math_funcs.h"
+
+void Camera2D::bind() {
+	make_current();
+
+	Transform canvas_transform;
+	canvas_transform.translate_local(-(size.width / 2.0f), -(size.height / 2.0f), 0.0f);
+	//canvas_transform.scale(Vector3(2.0f / size.width, 2.0f / size.height, 1.0f));
+	canvas_transform.scale(Vector3(2.0f / size.width, -2.0f / size.height, 1.0f));
+	projection_matrix = canvas_transform;
+
+	model_view_matrix = Transform2D();
+}
+
+void Camera2D::make_current() {
+	current_camera = this;
+}
+
+Camera2D::Camera2D() {
+}
+Camera2D::~Camera2D() {
+}
+
+Camera2D *Camera2D::current_camera = NULL;

sfw/application/camera_2d.h

@@ -0,0 +1,31 @@
+#ifndef CAMERA_2D_H
+#define CAMERA_2D_H
+
+#include "3rd_glad.h"
+
+#include "transform.h"
+#include "transform_2d.h"
+#include "vector2.h"
+
+class Camera2D {
+public:
+	virtual void bind();
+
+	void make_current();
+
+	Camera2D();
+	virtual ~Camera2D();
+
+	Vector2 size;
+
+	//RenderTexture target ?
+	//bool auto_set_size?
+	//func auto_set_size()?
+
+	static Camera2D *current_camera;
+
+	Transform2D model_view_matrix;
+	Transform projection_matrix;
+};
+
+#endif // CAMERA_H

sfw/application/mesh_instance_2d.cpp

@@ -0,0 +1,37 @@
+#include "mesh_instance_2d.h"
+
+#include "camera_2d.h"
+
+void MeshInstance2D::render() {
+    if (!mesh) {
+        return;
+    }
+
+    Transform2D mat_orig = Camera2D::current_camera->model_view_matrix;
+
+    Camera2D::current_camera->model_view_matrix *= transform;
+
+    if (material) {
+        material->bind();
+    }
+
+    mesh->render();
+
+    for (uint32_t i = 0; i < children.size(); ++i) {
+        MeshInstance2D * c = children[i];
+
+        if (c) {
+            c->render();
+        }
+    }
+
+    Camera2D::current_camera->model_view_matrix = mat_orig;
+}
+
+MeshInstance2D::MeshInstance2D() {
+    material = NULL;
+    mesh = NULL;
+}
+MeshInstance2D::~MeshInstance2D() {
+    children.clear();
+}

sfw/application/mesh_instance_2d.h

@@ -0,0 +1,26 @@
+#ifndef MESH_INSTACE_2D_H
+#define MESH_INSTACE_2D_H
+
+#include <vector>
+
+#include "material.h"
+#include "mesh.h"
+
+#include "transform.h"
+
+class MeshInstance2D {
+public:
+    void render();
+
+    MeshInstance2D();
+    ~MeshInstance2D();
+
+    Material *material;
+    Mesh *mesh;
+
+    Transform2D transform;
+
+    std::vector<MeshInstance2D *> children;
+};
+
+#endif // MESH_INSTACE_H

sfw/application/sprite.cpp

@@ -11,6 +11,7 @@ void Sprite::render() {
 	mesh_instance->scale.y = scale.y;
 	*/
 
+	mesh_instance->transform = transform;
 	mesh_instance->render();
 }
 
@@ -22,6 +23,7 @@ void Sprite::update_mesh() {
 	float w2 = width / 2.0;
 	float h2 = height / 2.0;
 
+	/*
 	mesh->add_uv(region_x, region_y);
 	mesh->add_vertex2(-w2, h2);
 
@@ -33,6 +35,21 @@ void Sprite::update_mesh() {
 
 	mesh->add_uv(region_x + region_width, region_y);
 	mesh->add_vertex2(w2, h2);
+	*/
+
+	mesh->add_uv(region_x, region_y);
+	mesh->add_vertex2(-w2, -h2);
+
+	mesh->add_uv(region_x + region_width, region_y + region_height);
+	mesh->add_vertex2(w2, h2);
+
+	mesh->add_uv(region_x, region_y + region_height);
+
+	mesh->add_vertex2(-w2, h2);
+
+	mesh->add_uv(region_x + region_width, region_y);
+
+	mesh->add_vertex2(w2, -h2);
 
 	mesh->add_triangle(1, 0, 2);
 	mesh->add_triangle(0, 1, 3);
@@ -40,8 +57,9 @@ void Sprite::update_mesh() {
 	mesh->upload();
 }
 
-Sprite::Sprite() : Object2D() {
-    mesh_instance = new MeshInstance();
+Sprite::Sprite() :
+		Object2D() {
+	mesh_instance = new MeshInstance2D();
 	mesh_instance->mesh = new Mesh(2);
 
 	width = 1;
@@ -57,7 +75,3 @@ Sprite::~Sprite() {
 	delete mesh_instance->mesh;
 	delete mesh_instance;
 }
-
-
-
-

sfw/application/sprite.h

@@ -3,7 +3,8 @@
 
 #include "object_2d.h"
 
-#include "mesh_instance.h"
+#include "transform_2d.h"
+#include "mesh_instance_2d.h"
 
 class Sprite : public Object2D {
 public:
@@ -13,7 +14,9 @@ public:
     Sprite();
     ~Sprite();
 
-    MeshInstance *mesh_instance;
+    Transform2D transform;
+
+    MeshInstance2D *mesh_instance;
 
     float width;
     float height;

sfw/application/texture_material_2d.h

@@ -0,0 +1,99 @@
+#ifndef TEXTURE_MATERIAL_2D_H
+#define TEXTURE_MATERIAL_2D_H
+
+#include "material.h"
+#include "texture.h"
+
+#include "camera_2d.h"
+
+class TextureMaterial2D : public Material {
+public:
+	int get_material_id() {
+		return 10;
+	}
+
+	void bind_uniforms() {
+        set_uniform(projection_matrix_location, Camera2D::current_camera->projection_matrix);
+        set_uniform(model_view_matrix_location, Camera2D::current_camera->model_view_matrix);
+
+		if (texture) {
+			glActiveTexture(GL_TEXTURE0);
+			glBindTexture(GL_TEXTURE_2D, texture->texture);
+			glUniform1i(texture_location, 0);
+		}
+	}
+
+	void setup_uniforms() {
+		projection_matrix_location = get_uniform("u_proj_matrix");
+		model_view_matrix_location = get_uniform("u_model_view_matrix");
+
+		texture_location = get_uniform("u_texture");
+	}
+
+	void unbind() {
+		glDisable(GL_TEXTURE_2D);
+	}
+
+	void setup_state() {
+		glEnable(GL_TEXTURE_2D);
+	}
+
+	const GLchar **get_vertex_shader_source() {
+		static const GLchar *vertex_shader_source[] = {
+			"uniform mat4 u_proj_matrix;\n"
+			"uniform mat4 u_model_view_matrix;\n"
+			"\n"
+			"attribute vec4 a_position;\n"
+			"attribute vec2 a_uv;\n"
+			"\n"
+			"varying vec2 v_uv;\n"
+			"\n"
+			"void main() {\n"
+			"  v_uv = a_uv;\n"
+			"  gl_Position = u_proj_matrix * u_model_view_matrix * a_position;\n"
+			"}"
+		};
+
+		return vertex_shader_source;
+	}
+
+	const GLchar **get_fragment_shader_source() {
+		static const GLchar *fragment_shader_source[] = {
+			"precision mediump float;\n"
+			"\n"
+			"uniform sampler2D u_texture;\n"
+			"\n"
+			"varying vec2 v_uv;\n"
+			"\n"
+			"void main() {\n"
+            "  vec4 col = texture2D(u_texture, v_uv);\n"
+            "\n"
+            "  if (col.a < 0.1) {\n"
+            "    discard;\n"
+            "  }\n"
+            "\n"
+            "  gl_FragColor = col;\n"
+			"}"
+		};
+
+		return fragment_shader_source;
+	}
+
+	TextureMaterial2D() :
+			Material() {
+		projection_matrix_location = 0;
+		model_view_matrix_location = 0;
+
+		texture_location = 0;
+		texture = NULL;
+	}
+
+	GLint projection_matrix_location;
+	GLint model_view_matrix_location;
+
+	GLint texture_location;
+
+	Texture *texture;
+};
+
+#endif // COLORED_MATERIAL_H