static void _del_gl(Evas_Object *obj) { GLData *gld = evas_object_data_get(obj, "gld"); if (!gld) { printf("Unable to get GLData. \n"); return; } Evas_GL_API *gl = gld->glapi; gl->glDeleteShader(gld->vtx_shader); gl->glDeleteShader(gld->fgmt_shader); gl->glDeleteProgram(gld->program); gl->glDeleteBuffers(1, &gld->gear1->vbo); gl->glDeleteBuffers(1, &gld->gear2->vbo); gl->glDeleteBuffers(1, &gld->gear3->vbo); free_gear(gld->gear1); free_gear(gld->gear2); free_gear(gld->gear3); evas_object_data_del((Evas_Object*)obj, "..gld"); free(gld); }
// Initialize the shader and program object static int init_shaders(GLData *gld) { Evas_GL_API *gl = gld->glapi; GLbyte vShaderStr[] = "attribute vec4 vPosition; \n" "void main() \n" "{ \n" " gl_Position = vPosition; \n" "} \n"; GLbyte fShaderStr[] = "#ifdef GL_ES \n" "precision mediump float; \n" "#endif \n" "void main() \n" "{ \n" " gl_FragColor = vec4 ( 1.0, 0.0, 0.0, 1.0 );\n" "} \n"; GLint linked; // Load the vertex/fragment shaders gld->vtx_shader = load_shader(gld, GL_VERTEX_SHADER, (const char*)vShaderStr); gld->fgmt_shader = load_shader(gld, GL_FRAGMENT_SHADER, (const char*)fShaderStr); // Create the program object gld->program = gl->glCreateProgram( ); if (0 == gld->program) return 0; gl->glAttachShader(gld->program, gld->vtx_shader); gl->glAttachShader(gld->program, gld->fgmt_shader); gl->glBindAttribLocation(gld->program, 0, "vPosition"); gl->glLinkProgram(gld->program); gl->glGetProgramiv(gld->program, GL_LINK_STATUS, &linked); if (!linked) { GLint info_len = 0; gl->glGetProgramiv(gld->program, GL_INFO_LOG_LENGTH, &info_len); if (1 < info_len) { char* info_log = malloc(sizeof(char) * info_len); gl->glGetProgramInfoLog(gld->program, info_len, NULL, info_log); _printf("Error linking program:\n%s\n", info_log); free(info_log); g_assert(FALSE); } gl->glDeleteProgram(gld->program); return 0; } return 1; }