//--------------------------------// static GLuint load_shader( GLData *gld, GLenum type, const char *shader_src ) { Evas_GL_API *gl = gld->glapi; GLuint shader; GLint compiled; // Create the shader object shader = gl->glCreateShader(type); if (shader==0) return 0; // Load/Compile shader source gl->glShaderSource(shader, 1, &shader_src, NULL); gl->glCompileShader(shader); gl->glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled); if (!compiled) { GLint info_len = 0; gl->glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &info_len); if (info_len > 1) { char* info_log = malloc(sizeof(char) * info_len); gl->glGetShaderInfoLog(shader, info_len, NULL, info_log); printf("Error compiling shader:\n%s\n======\n%s\n======\n", info_log, shader_src ); free(info_log); } gl->glDeleteShader(shader); return 0; } return shader; }
static void gears_init(GLData *gld) { Evas_GL_API *gl = gld->glapi; const char *p; char msg[512]; gl->glEnable(GL_CULL_FACE); gl->glEnable(GL_DEPTH_TEST); p = vertex_shader; gld->vtx_shader = gl->glCreateShader(GL_VERTEX_SHADER); gl->glShaderSource(gld->vtx_shader, 1, &p, NULL); gl->glCompileShader(gld->vtx_shader); gl->glGetShaderInfoLog(gld->vtx_shader, sizeof msg, NULL, msg); printf("vertex shader info: %s\n", msg); p = fragment_shader; gld->fgmt_shader = gl->glCreateShader(GL_FRAGMENT_SHADER); gl->glShaderSource(gld->fgmt_shader, 1, &p, NULL); gl->glCompileShader(gld->fgmt_shader); gl->glGetShaderInfoLog(gld->fgmt_shader, sizeof msg, NULL, msg); printf("fragment shader info: %s\n", msg); gld->program = gl->glCreateProgram(); gl->glAttachShader(gld->program, gld->vtx_shader); gl->glAttachShader(gld->program, gld->fgmt_shader); gl->glBindAttribLocation(gld->program, 0, "position"); gl->glBindAttribLocation(gld->program, 1, "normal"); gl->glLinkProgram(gld->program); gl->glGetProgramInfoLog(gld->program, sizeof msg, NULL, msg); printf("info: %s\n", msg); gl->glUseProgram(gld->program); gld->proj_location = gl->glGetUniformLocation(gld->program, "proj"); gld->light_location = gl->glGetUniformLocation(gld->program, "light"); gld->color_location = gl->glGetUniformLocation(gld->program, "color"); /* make the gears */ gld->gear1 = make_gear(gld, 1.0, 4.0, 1.0, 20, 0.7); gld->gear2 = make_gear(gld, 0.5, 2.0, 2.0, 10, 0.7); gld->gear3 = make_gear(gld, 1.3, 2.0, 0.5, 10, 0.7); }