static void configure_with(struct state_decompress *decompressor, struct video_desc desc)
{
enum dxt_type type;
#ifndef HAVE_MACOSX
printf("[RTDXT] Trying OpenGL 3.1 context first.\n");
decompressor->gl_context = glx_init(MK_OPENGL_VERSION(3,1));
decompressor->legacy = FALSE;
if(!decompressor->gl_context) {
fprintf(stderr, "[RTDXT] OpenGL 3.1 profile failed to initialize, falling back to legacy profile.\n");
decompressor->gl_context = glx_init(OPENGL_VERSION_UNSPECIFIED);
decompressor->legacy = TRUE;
}
glx_validate(decompressor->gl_context);
#else
decompressor->gl_context = NULL;
if(get_mac_kernel_version_major() >= 11) {
printf("[RTDXT] Mac 10.7 or latter detected. Trying OpenGL 3.2 Core profile first.\n");
decompressor->gl_context = mac_gl_init(MAC_GL_PROFILE_3_2);
if(!decompressor->gl_context) {
fprintf(stderr, "[RTDXT] OpenGL 3.2 Core profile failed to initialize, falling back to legacy profile.\n");
} else {
decompressor->legacy = FALSE;
}
}
if(!decompressor->gl_context) {
decompressor->gl_context = mac_gl_init(MAC_GL_PROFILE_LEGACY);
decompressor->legacy = TRUE;
}
#endif
if(!decompressor->gl_context) {
fprintf(stderr, "[RTDXT decompress] Failed to create GL context.");
exit_uv(128);
decompressor->compressed_len = 0;
return;
}
if(desc.color_spec == DXT5) {
type = DXT_TYPE_DXT5_YCOCG;
} else if(desc.color_spec == DXT1) {
type = DXT_TYPE_DXT1;
} else if(desc.color_spec == DXT1_YUV) {
type = DXT_TYPE_DXT1_YUV;
} else {
fprintf(stderr, "Wrong compressiong to decompress.\n");
return;
}
decompressor->desc = desc;
decompressor->decoder = dxt_decoder_create(type, desc.width,
desc.height, decompressor->out_codec == RGBA ? DXT_FORMAT_RGBA : DXT_FORMAT_YUV422, decompressor->legacy);
assert(decompressor->decoder != NULL);
decompressor->compressed_len = dxt_get_size(desc.width, desc.height, type);
decompressor->configured = TRUE;
}
bool init_gl_context(struct gl_context *context, int which) {
context->context = NULL;
#ifdef HAVE_LINUX
x11_enter_thread();
if(which == GL_CONTEXT_ANY) {
printf("Trying OpenGL 3.1 first.\n");
context->context = glx_init(MK_OPENGL_VERSION(3,1));
context->legacy = FALSE;
}
if(!context->context) {
if(which != GL_CONTEXT_LEGACY) {
fprintf(stderr, "[RTDXT] OpenGL 3.1 profile failed to initialize, falling back to legacy profile.\n");
}
context->context = glx_init(OPENGL_VERSION_UNSPECIFIED);
context->legacy = TRUE;
}
if(context->context) {
glx_validate(context->context);
}
#elif defined HAVE_MACOSX
if(which == GL_CONTEXT_ANY) {
if(get_mac_kernel_version_major() >= 11) {
printf("[RTDXT] Mac 10.7 or latter detected. Trying OpenGL 3.2 Core profile first.\n");
context->context = mac_gl_init(MAC_GL_PROFILE_3_2);
if(!context->context) {
fprintf(stderr, "[RTDXT] OpenGL 3.2 Core profile failed to initialize, falling back to legacy profile.\n");
} else {
context->legacy = FALSE;
}
}
}
if(!context->context) {
context->context = mac_gl_init(MAC_GL_PROFILE_LEGACY);
context->legacy = TRUE;
}
#else // WIN32
if(which == GL_CONTEXT_ANY) {
context->context = win32_context_init(OPENGL_VERSION_UNSPECIFIED);
} else if(which == GL_CONTEXT_LEGACY) {
context->context = win32_context_init(OPENGL_VERSION_LEGACY);
}
context->legacy = TRUE;
#endif
if(context->context) {
return true;
} else {
return false;
}
}
/**
* @brief initializes specified OpenGL context
*
* @note
* After this call, context is current for calling thread.
*
* @param[out] context newly created context
* @param which OpenGL version specifier
* @return info if context creation succeeded or failed
*/
bool init_gl_context(struct gl_context *context, int which) {
context->context = NULL;
#ifdef HAVE_LINUX
x11_enter_thread();
if(which == GL_CONTEXT_ANY) {
debug_msg("Trying OpenGL 3.1 first.\n");
context->context = glx_init(MK_OPENGL_VERSION(3,1));
context->legacy = FALSE;
}
if(!context->context) {
if(which != GL_CONTEXT_LEGACY) {
debug_msg("OpenGL 3.1 profile failed to initialize, falling back to legacy profile.\n");
}
context->context = glx_init(OPENGL_VERSION_UNSPECIFIED);
context->legacy = TRUE;
}
if(context->context) {
glx_validate(context->context);
}
#elif defined HAVE_MACOSX
if(which == GL_CONTEXT_ANY) {
if(get_mac_kernel_version_major() >= 11) {
debug_msg("Mac 10.7 or latter detected. Trying OpenGL 3.2 Core profile first.\n");
context->context = mac_gl_init(MAC_GL_PROFILE_3_2);
if(!context->context) {
debug_msg("OpenGL 3.2 Core profile failed to initialize, falling back to legacy profile.\n");
} else {
context->legacy = FALSE;
}
}
}
if(!context->context) {
context->context = mac_gl_init(MAC_GL_PROFILE_LEGACY);
context->legacy = TRUE;
}
#else // WIN32
if(which == GL_CONTEXT_ANY) {
context->context = win32_context_init(OPENGL_VERSION_UNSPECIFIED);
} else if(which == GL_CONTEXT_LEGACY) {
context->context = win32_context_init(OPENGL_VERSION_LEGACY);
}
context->legacy = TRUE;
#endif
{
char *save_ptr;
const char *gl_ver = (const char *) glGetString(GL_VERSION);
if (!gl_ver) {
fprintf(stderr, "Unable to determine OpenGL version!\n");
return false;
}
char *tmp = strdup(gl_ver);
char *item = strtok_r(tmp, ".", &save_ptr);
if (!item) {
fprintf(stderr, "Unable to determine OpenGL version!\n");
free(tmp);
return false;
}
context->gl_major = atoi(item);
item = strtok_r(NULL, ".", &save_ptr);
if (!item) {
fprintf(stderr, "Unable to determine OpenGL version!\n");
free(tmp);
return false;
}
context->gl_minor = atoi(item);
free(tmp);
}
if(context->context) {
return true;
} else {
return false;
}
}
void *glx_init(glx_opengl_version_t version)
{
Display *display;
struct state_glx *context;
context = (struct state_glx *) malloc(sizeof(struct state_glx));
context->magic = GLX_MAGIC;
x11_lock();
display = x11_acquire_display();
if(!display) {
free(context);
x11_unlock();
return NULL;
}
#ifdef HAVE_GPUPERFAPI
GPA_Status gpa_status;
gpa_status = GPA_Initialize();
assert(gpa_status == GPA_STATUS_OK);
#endif
// Get a matching FB config
static int visual_attribs[] =
{
GLX_X_RENDERABLE , True,
GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT,
GLX_RENDER_TYPE , GLX_RGBA_BIT,
GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR,
GLX_RED_SIZE , 8,
GLX_GREEN_SIZE , 8,
GLX_BLUE_SIZE , 8,
GLX_ALPHA_SIZE , 8,
GLX_DEPTH_SIZE , 24,
GLX_STENCIL_SIZE , 8,
GLX_DOUBLEBUFFER , True,
//GLX_SAMPLE_BUFFERS , 1,
//GLX_SAMPLES , 4,
None
};
int glx_major, glx_minor;
// FBConfigs were added in GLX version 1.3.
if ( !glXQueryVersion( display, &glx_major, &glx_minor ) ||
( ( glx_major == 1 ) && ( glx_minor < 3 ) ) || ( glx_major < 1 ) )
{
printf( "Invalid GLX version" );
goto error;
}
printf( "Getting matching framebuffer configs\n" );
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig( display, DefaultScreen( display ),
visual_attribs, &fbcount );
if ( !fbc )
{
printf( "Failed to retrieve a framebuffer config\n" );
goto error;
}
printf( "Found %d matching FB configs.\n", fbcount );
// Pick the FB config/visual with the most samples per pixel
printf( "Getting XVisualInfos\n" );
int best_fbc = -1, worst_fbc = -1, best_num_samp = -1, worst_num_samp = 999;
int i;
for ( i = 0; i < fbcount; i++ )
{
XVisualInfo *vi = glXGetVisualFromFBConfig( display, fbc[i] );
if ( vi )
{
int samp_buf, samples;
glXGetFBConfigAttrib( display, fbc[i], GLX_SAMPLE_BUFFERS, &samp_buf );
glXGetFBConfigAttrib( display, fbc[i], GLX_SAMPLES , &samples );
printf( " Matching fbconfig %d, visual ID 0x%2x: SAMPLE_BUFFERS = %d,"
" SAMPLES = %d\n",
i, (unsigned int) vi -> visualid, samp_buf, samples );
if ( best_fbc < 0 || (samp_buf && samples > best_num_samp ))
best_fbc = i, best_num_samp = samples;
if ( worst_fbc < 0 || !samp_buf || samples < worst_num_samp )
worst_fbc = i, worst_num_samp = samples;
}
XFree( vi );
}
GLXFBConfig bestFbc = fbc[ best_fbc ];
// Be sure to free the FBConfig list allocated by glXChooseFBConfig()
XFree( fbc );
// Get a visual
XVisualInfo *vi = glXGetVisualFromFBConfig( display, bestFbc );
printf( "Chosen visual ID = 0x%x\n", (unsigned int) vi->visualid );
printf( "Creating colormap\n" );
XSetWindowAttributes swa;
swa.colormap = context->cmap = XCreateColormap( display,
RootWindow( display, vi->screen ),
vi->visual, AllocNone );
swa.background_pixmap = None ;
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
printf( "Creating window\n" );
context->win = XCreateWindow( display, RootWindow( display, vi->screen ),
0, 0, 1920, 1080, 0, vi->depth, InputOutput,
vi->visual,
CWBorderPixel|CWColormap|CWEventMask, &swa );
XMoveWindow(display, context->win, 0, 0);
if ( !context->win )
{
printf( "Failed to create window.\n" );
goto error;
}
// Done with the visual info data
XFree( vi );
/* We don't need this for UG */
/*XStoreName( display, win, "GL 3.0 Window" );
printf( "Mapping window\n" );
XMapWindow( display, win );*/
// Get the default screen's GLX extension list
const char *glxExts = glXQueryExtensionsString( display,
DefaultScreen( display ) );
// NOTE: It is not necessary to create or make current to a context before
// calling glXGetProcAddressARB
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0;
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)
glXGetProcAddressARB( (const GLubyte *) "glXCreateContextAttribsARB" );
context->ctx = 0;
// Install an X error handler so the application won't exit if GL 3.0
// context allocation fails.
//
// Note this error handler is global. All display connections in all threads
// of a process use the same error handler, so be sure to guard against other
// threads issuing X commands while this code is running.
ctxErrorOccurred = FALSE;
int (*oldHandler)(Display*, XErrorEvent*) =
XSetErrorHandler(&ctxErrorHandler);
// Check for the GLX_ARB_create_context extension string and the function.
// If either is not present, use GLX 1.3 context creation method.
if ( !isExtensionSupported( glxExts, "GLX_ARB_create_context" ) ||
!glXCreateContextAttribsARB )
{
printf( "glXCreateContextAttribsARB() not found"
" ... using old-style GLX context\n" );
context->ctx = glXCreateNewContext( display, bestFbc, GLX_RGBA_TYPE, 0, True );
if(!VERSION_IS_UNSPECIFIED(version)) {
return NULL;
}
}
// If it does, try to get a GL 3.0 context!
else
{
int context_attribs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
//GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_FORWARD_COMPATIBLE_BIT_ARB,
None
};
if(!VERSION_IS_UNSPECIFIED(version)) {
context_attribs[1] = VERSION_GET_MAJOR(version);
context_attribs[3] = VERSION_GET_MINOR(version);
}
printf( "Creating context\n" );
context->ctx = glXCreateContextAttribsARB( display, bestFbc, 0,
True, context_attribs );
// Sync to ensure any errors generated are processed.
XSync( display, False );
if ( !ctxErrorOccurred && context->ctx )
printf( "Created GL %d.%d context\n", context_attribs[1], context_attribs[3]);
else
{
if(VERSION_IS_UNSPECIFIED(version)) {
// Couldn't create GL 3.0 context. Fall back to old-style 2.x context.
// When a context version below 3.0 is requested, implementations will
// return the newest context version compatible with OpenGL versions less
// than version 3.0.
// GLX_CONTEXT_MAJOR_VERSION_ARB = 1
context_attribs[1] = 1;
// GLX_CONTEXT_MINOR_VERSION_ARB = 0
context_attribs[3] = 0;
ctxErrorOccurred = FALSE;
printf( "Failed to create GL 3.0 context"
" ... using old-style GLX context\n" );
context->ctx = glXCreateContextAttribsARB( display, bestFbc, 0,
True, context_attribs );
} else {
// we explicitly requested context which we cannot obtain - return error then
goto error;
}
}
}
// Sync to ensure any errors generated are processed.
XSync( display, False );
// Restore the original error handler
XSetErrorHandler( oldHandler );
if ( ctxErrorOccurred || !context->ctx )
{
printf( "Failed to create an OpenGL context\n" );
goto error;
}
// Verifying that context is a direct context
if ( ! glXIsDirect ( display, context->ctx ) )
{
printf( "Indirect GLX rendering context obtained\n" );
}
else
{
printf( "Direct GLX rendering context obtained\n" );
}
printf( "Making context current\n" );
glXMakeCurrent( display, context->win, context->ctx );
glewInit();
x11_unlock();
glx_validate(context);
#ifdef HAVE_GPUPERFAPI
gpa_status = GPA_OpenContext( context->ctx );
assert(gpa_status == GPA_STATUS_OK);
#endif
return (void *) context;
error:
free(context);
x11_unlock();
return NULL;
}
