From 4caa6dfb5ba892671bc1ea896775d8c3508014bb Mon Sep 17 00:00:00 2001 From: Jean Sirmai Date: Mon, 2 Oct 2023 11:07:51 +0200 Subject: [PATCH] Version 'stable' sur un petit nombre de tests < A tester intensivement (random set_arrows() ?) --- src/graphics/shaders_study.c | 159 ----------------------------------- 1 file changed, 159 deletions(-) delete mode 100644 src/graphics/shaders_study.c diff --git a/src/graphics/shaders_study.c b/src/graphics/shaders_study.c deleted file mode 100644 index e23e816..0000000 --- a/src/graphics/shaders_study.c +++ /dev/null @@ -1,159 +0,0 @@ -/* - * Gem-graph OpenGL experiments - * - * Desc: GL functions - * - * Copyright (C) 2023 Arthur Menges - * Copyright (C) 2023 Adrien Bourmault - * Copyright (C) 2023 Jean Sirmai - * - * This file is part of Gem-graph. - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU Affero General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Affero General Public License for more details. - * - * You should have received a copy of the GNU Affero General Public License - * along with this program. If not, see . - */ - -#include "../../include/base.h" -#include "../../include/ui.h" -#include "../../include/graphics.h" -#include "../../include/shaders_study.h" -#include "../../include/arrows.h" -#include "../../include/grid.h" - -#define VERTEX_SHADER_FILE "src/shaders/shader.vert" -#define FRAG_SHADER_FILE "src/shaders/shader.frag" - - -// Que fait l'instruction suivante (ligne 397 de graphics.c) -// dans "bool graphics_init(const char *gl_area)" ? -// -// if (!graphics_init_shaders(gl_area)) return false; -// -// Et comment et pourquoi cette structure "gl_area_array" ? -// (Dynamic array of ptrs to dynamically allocated gl_area_entry) -// -// struct gl_area_entry **gl_area_array = NULL; - - - -/* - * Initializes the shaders of a gl_area and link them to a program - * - * @param gl_area, ptr to the gl_area widget - * - * @return true if initialized - */ -bool graphics_init_shaders(const void *gl_area) -{ - char *vertex_shader; - char *fragment_shader; - struct gl_area_entry *entry; - int status; - GLuint vertex, fragment; - GLuint program = 0; - GLuint m = 0; - GLuint v = 0; - GLuint p = 0; - - entry = graphics_find_glarea_from_ptr(gl_area); - - if (entry == NULL) { - errno = EFAULT; - perror("gl_area_array entry not found"); - return false; - } - - // Load vertex shader file - vertex_shader = read_file(VERTEX_SHADER_FILE); - if (vertex_shader == NULL) - return false; - vertex = create_shader(GL_VERTEX_SHADER, vertex_shader); - -// ! WARNING ! l'instruction suivante (ou un autre 'free') a pu provoquer un 'double free' (Abandon) - if(vertex == 0) { - entry->program = 0; - g_free(vertex_shader); - return false; - } - - // Load fragment shader file - fragment_shader = read_file(FRAG_SHADER_FILE); - if (fragment_shader == NULL) - return false; - fragment = create_shader(GL_FRAGMENT_SHADER, fragment_shader); - - if(fragment == 0) { - glDeleteShader(vertex); - entry->program = 0; - g_free(vertex_shader); - g_free(fragment_shader); - return false; - } - - // Link shaders to program - program = glCreateProgram(); - glAttachShader(program, vertex); - glAttachShader(program, fragment); - - glLinkProgram(program); - - glGetProgramiv(program, GL_LINK_STATUS, &status); - - if(status == GL_FALSE) { - int log_len; - char *buffer; - - glGetProgramiv(program, GL_INFO_LOG_LENGTH, &log_len); - - buffer = g_malloc(log_len + 1); - assert(buffer); - glGetProgramInfoLog(program, log_len, NULL, buffer); - - g_warning("Linking failure:\n%s", buffer); - - g_free(buffer); - - glDeleteProgram(program); - program = 0; - - glDeleteShader(vertex); - glDeleteShader(fragment); - - g_free(vertex_shader); - g_free(fragment_shader); - - return false; - } - - /* Get the location of the "mvp" uniform */ - m = glGetUniformLocation(program, "model_matrix"); - v = glGetUniformLocation(program, "view_matrix"); - p = glGetUniformLocation(program, "projection_matrix"); - - glDetachShader(program, vertex); - glDetachShader(program, fragment); - - glDeleteShader(vertex); - glDeleteShader(fragment); - - entry->program = program; - entry->m = m; - entry->v = v; - entry->p = p; - - g_free(vertex_shader); - g_free(fragment_shader); - - return true; -} -