86f7f49988
:) never say something like "I have fixed all the memleaks." it's trolling fate. now, i'm not sure, but it should be less than before.
113 lines
No EOL
2.4 KiB
C
113 lines
No EOL
2.4 KiB
C
/*
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* This software is licensed under the terms of the MIT-License
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* See COPYING for further information.
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* ---
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* Copyright (C) 2011, Lukas Weber <laochailan@web.de>
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*/
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#include "shader.h"
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#include "global.h"
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#include "list.h"
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#include <stdio.h>
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void print_info_log(GLuint shader) {
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int len, alen;
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glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &len);
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if(len > 1) {
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char *log = malloc(len);
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memset(log, 0, len);
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glGetShaderInfoLog(shader, len, &alen, log);
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printf("%s\n", log);
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free(log);
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}
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}
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void load_shader(const char *filename) {
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FILE *file = fopen(filename,"r");
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if(file == NULL)
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err(-1, "Error opening '%s'", filename);
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fseek(file, 0, SEEK_END);
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int size = ftell(file);
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fseek(file, 0, SEEK_SET);
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if(size == 0)
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errx(-1, "File empty!");
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char *text = malloc(size+1);
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fread(text, size, 1, file);
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text[size] = 0;
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char *vtext = text;
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char *delim = strstr(text, DELIM);
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if(delim == NULL)
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errx(-1, "Expected '%s' delimiter.", DELIM);
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*delim = 0;
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char *ftext = delim + DELIM_SIZE;
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Shader *sha = create_element((void **)&global.shaders, sizeof(Shader));
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GLuint vshaderobj;
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GLuint fshaderobj;
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sha->prog = glCreateProgram();
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vshaderobj = glCreateShader(GL_VERTEX_SHADER);
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fshaderobj = glCreateShader(GL_FRAGMENT_SHADER);
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int s = -1;
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glShaderSource(vshaderobj, 1, (const GLchar **)&vtext, &s);
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glShaderSource(fshaderobj, 1, (const GLchar **)&ftext, &s);
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glCompileShader(vshaderobj);
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glCompileShader(fshaderobj);
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print_info_log(vshaderobj);
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print_info_log(fshaderobj);
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glAttachShader(sha->prog, vshaderobj);
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glAttachShader(sha->prog, fshaderobj);
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glDeleteShader(vshaderobj);
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glDeleteShader(fshaderobj);
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glLinkProgram(sha->prog);
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print_info_log(sha->prog);
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free(text);
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char *beg = strstr(filename, "shader/") + 7;
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char *end = strrchr(filename, '.');
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sha->name = malloc(end - beg + 1);
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memset(sha->name, 0, end-beg + 1);
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strncpy(sha->name, beg, end-beg);
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printf("-- loaded '%s' as '%s'\n", filename, sha->name);
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}
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GLuint get_shader(const char *name) {
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Shader *s, *res = NULL;
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for(s = global.shaders; s; s = s->next) {
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if(strcmp(s->name, name) == 0)
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res = s;
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}
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if(res == NULL)
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errx(-1,"get_shader():\n!- cannot load shader '%s'", name);
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return res->prog;
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}
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void delete_shader(void **shas, void *sha) {
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free(((Shader *)sha)->name);
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glDeleteShader(((Shader*)sha)->prog);
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delete_element(shas, sha);
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}
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void delete_shaders() {
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delete_all_elements((void **)&global.shaders, delete_shader);
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} |