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331 lines
11 KiB
331 lines
11 KiB
7 months ago
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/**
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********************************************************************************
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* Copyright (C) 2021 NEXTCHIP Inc. All rights reserved.
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* This software is the confidential and proprietary information of
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* NEXTCHIP, Inc. ("Confidential Information"). You shall not disclose such
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* Confidential Information and shall use it only in accordance with
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* the terms of the license agreement you entered into with NEXTCHIP.
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********************************************************************************
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********************************************************************************
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* @file : wayland_egl_app.c
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*
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* @brief : opengl 3d example application
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*
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* @author : Software Development Team. NextChip Inc.
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*
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* @date : 2024.04.26.
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*
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* @version : 1.0.0
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********************************************************************************
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* @note
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*
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********************************************************************************
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*/
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/*
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********************************************************************************
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* INCLUDES
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********************************************************************************
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdbool.h>
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#include <math.h>
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#include <assert.h>
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#include <signal.h>
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#include <linux/input.h>
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#include <GLES2/gl2.h>
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#include <EGL/egl.h>
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#include <SOIL.h>
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#include "wayland_egl.h"
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#include "matrix.h"
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#include "nc_utils.h"
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#include "nc_opengl_shader.h"
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#include "nc_opengl_init.h"
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/*
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********************************************************************************
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* DEFINES
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********************************************************************************
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*/
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/*
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********************************************************************************
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* VARIABLE DECLARATIONS
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********************************************************************************
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*/
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const char* objFile = "misc/texture/MarsCuriosityRover.obj";
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const char* textureFile = "misc/texture/texture_";
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static int running = 1;
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Vec3 *vertices;
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Vec3 *normals;
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Vec2 *uvs;
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int obj_f[10] = {0,};
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/*
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********************************************************************************
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* FUNCTION DEFINITIONS
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********************************************************************************
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*/
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void gl_initialize(struct window *window)
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{
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// Dark blue background
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glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
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// Enable depth test
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glEnable(GL_DEPTH_TEST);
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// Accept fragment if it closer to the camera than the former one
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glDepthFunc(GL_LESS);
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glDepthMask(GL_TRUE);
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// Cull triangles which normal is not towards the camera
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glEnable(GL_CULL_FACE);
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// OpenGL ES 쉐이더 프로그램 생성
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window->gl.program = nc_createProgram(vertexShaderSourceEx, fragmentShaderSourceEx);
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glUseProgram(window->gl.program);
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// Get a handle for our "MVP" uniform
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window->gl.MatrixID = glGetUniformLocation(window->gl.program, "MVP");
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window->gl.ViewMatrixID = glGetUniformLocation(window->gl.program, "V");
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window->gl.ModelMatrixID = glGetUniformLocation(window->gl.program, "M");
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// Get a handle for our "myTextureSampler" uniform
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window->gl.TextureID = glGetUniformLocation(window->gl.program, "myTextureSampler");
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// Set our "myTextureSampler" sampler to user Texture Unit 0
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glUniform1i(window->gl.TextureID, 0);
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// Get a handle for our "LightPosition" uniform
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window->gl.LightID = glGetUniformLocation(window->gl.program, "LightPosition_worldspace");
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// Read our .obj file
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window->gl.objcount = nc_loadOBJ(objFile, (Vector3**)&vertices, (Vector2**)&uvs, (Vector3**)&normals, obj_f);
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if(window->gl.objcount > 0)
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{
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int objversize=0;
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int objuvsize=0;
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char buf[128];
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uint32_t i=0;
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for(i=0;i<window->gl.objcount;i++)
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{
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if(i==0)
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{
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// Load it into a VBO
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glGenBuffers(1, &window->gl.vertexbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.vertexbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 *sizeof(Vec3), &vertices[0], GL_STATIC_DRAW);
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glGenBuffers(1, &window->gl.uvbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.uvbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 * sizeof(Vec2), &uvs[0], GL_STATIC_DRAW);
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glGenBuffers(1, &window->gl.normalbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.normalbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 *sizeof(Vec3), &normals[0], GL_STATIC_DRAW);
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objversize = obj_f[i] * 3;
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objuvsize = obj_f[i] * 3;
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}else
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{
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// Load it into a VBO
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glGenBuffers(1, &window->gl.vertexbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.vertexbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 *sizeof(Vec3), &vertices[objversize], GL_STATIC_DRAW);
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glGenBuffers(1, &window->gl.uvbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.uvbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 * sizeof(Vec2), &uvs[objuvsize], GL_STATIC_DRAW);
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glGenBuffers(1, &window->gl.normalbuffer[i]);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.normalbuffer[i]);
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glBufferData(GL_ARRAY_BUFFER, obj_f[i] * 3 *sizeof(Vec3), &normals[objversize], GL_STATIC_DRAW);
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objversize = objversize + obj_f[i] * 3;
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objuvsize = objuvsize + obj_f[i] * 3;
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}
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sprintf(buf,"%s%d.png",textureFile,i+1);
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window->gl.Texture[i] = nc_loadTexture(buf);
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}
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}else
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{
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printf("nc_loadOBJ Error \n");
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}
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
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glBindBuffer(GL_ARRAY_BUFFER, 0);
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glViewport(0, 0, window->geometry.width, window->geometry.height);
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}
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void render(void *data, struct wl_callback *callback, uint32_t time)
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{
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static float angle = 0.0f;
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struct window *window = (struct window*)data;
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uint32_t i = 0;
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assert(window->callback == callback);
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window->callback = NULL;
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if (callback)
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wl_callback_destroy(callback);
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if (!window->configured)
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return;
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(void)time;
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// Clear the screen
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glClearColor(0.05f, 0.05f, 0.05f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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// Use our shader
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glUseProgram(window->gl.program);
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struct mat4f transform = mat4f_identity;
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transform = mat4f_multiply(transform, mat4f_perspective());
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transform = mat4f_multiply(transform, mat4f_translation(0, 0, -4));
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transform = mat4f_multiply(transform, mat4f_scale(5,5,5));
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transform = mat4f_multiply(transform, mat4f_rotate_x(2 * (float)pi * 0.02f));//(angle*0.3)));
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transform = mat4f_multiply(transform, mat4f_rotate_y(2 * (float)pi * angle));
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glUniformMatrix4fv(window->gl.MatrixID, 1, GL_FALSE, mat4f_gl(&transform));
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glUniformMatrix4fv(window->gl.ModelMatrixID, 1, GL_FALSE, mat4f_gl(&mat4f_identity));
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glUniformMatrix4fv(window->gl.ViewMatrixID, 1, GL_FALSE, mat4f_gl(&mat4f_identity));
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GLfloat lightPos[3] = { 4.0f, 4.0f, 4.0f };
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glUniform3fv(window->gl.LightID, 1, lightPos);
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for(i=0;i<window->gl.objcount;i++)
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{
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// Bind our texture in Texture Unit 0
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glActiveTexture(GL_TEXTURE0 + i);
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glBindTexture(GL_TEXTURE_2D, window->gl.Texture[i]);
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// Set our "myTextureSampler" sampler to user Texture Unit 0
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glUniform1i(window->gl.TextureID, i);
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// 1rst attribute buffer : vertices
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GLint vertexHandle = glGetAttribLocation(window->gl.program, "vertexPosition_modelspace");
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GLint uvHandle = glGetAttribLocation(window->gl.program, "vertexUV");
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GLint norHandle = glGetAttribLocation(window->gl.program, "vertexNormal_modelspace");
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glEnableVertexAttribArray(vertexHandle);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.vertexbuffer[i]);
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glVertexAttribPointer(
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vertexHandle, // attribute
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3, // size
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GL_FLOAT, // type
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GL_FALSE, // normalized?
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0, // stride
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(void*)0 // array buffer offset
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);
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// 2nd attribute buffer : UVs
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glEnableVertexAttribArray(uvHandle);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.uvbuffer[i]);
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glVertexAttribPointer(
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uvHandle, // attribute
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2, // size
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GL_FLOAT, // type
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GL_FALSE, // normalized?
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0, // stride
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(void*)0 // array buffer offset
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);
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// 3rd attribute buffer : normals
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glEnableVertexAttribArray(norHandle);
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glBindBuffer(GL_ARRAY_BUFFER, window->gl.normalbuffer[i]);
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glVertexAttribPointer(
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norHandle, // attribute
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3, // size
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GL_FLOAT, // type
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GL_FALSE, // normalized?
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0, // stride
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(void*)0 // array buffer offset
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);
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// Draw the triangles !
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glDrawArrays(GL_TRIANGLES, 0, obj_f[i]*3);
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glDisableVertexAttribArray(0);
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glDisableVertexAttribArray(1);
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glDisableVertexAttribArray(2);
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}
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angle+=0.001f;
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nc_wayland_display_draw(window,(void *)render);
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}
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static void signal_int()
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{
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running = 0;
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}
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static void usage(int error_code)
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{
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fprintf(stderr, "Usage: simple-egl [OPTIONS]\n\n"
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" -f\tRun in fullscreen mode\n"
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" -o\tCreate an opaque surface\n"
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" -h\tThis help text\n\n");
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exit(error_code);
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}
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int main(int argc, char **argv)
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{
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struct sigaction sigint;
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struct display display;
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struct window window;
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int i, ret = 0;
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memset(&display, 0, sizeof(display));
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memset(&window, 0, sizeof(window));
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window.display = &display;
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display.window = &window;
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window.window_size.width = WINDOW_WIDTH;
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window.window_size.height = WINDOW_HEIGHT;
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for (i = 1; i < argc; i++) {
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if (strcmp("-f", argv[i]) == 0)
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window.fullscreen = 1;
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else if (strcmp("-o", argv[i]) == 0)
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window.opaque = 1;
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else if (strcmp("-h", argv[i]) == 0)
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usage(EXIT_SUCCESS);
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else
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usage(EXIT_FAILURE);
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}
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nc_wayland_display_init(&display,(void *)render);
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gl_initialize(&window);
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sigint.sa_handler = (sighandler_t)signal_int;
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sigemptyset(&sigint.sa_mask);
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sigint.sa_flags = SA_RESETHAND;
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sigaction(SIGINT, &sigint, NULL);
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while (running && ret != -1)
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{
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ret = wl_display_dispatch(display.display);
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}
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nc_wayland_display_destroy(&display);
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return 0;
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}
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