This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_pandora.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2010 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Sam Lantinga
slouken@libsdl.org
Open Pandora SDL driver
Copyright (C) 2009 David Carré
(cpasjuste@gmail.com)
*/
/* SDL internals */
#include "SDL_config.h"
#include "../SDL_sysvideo.h"
#include "SDL_version.h"
#include "SDL_syswm.h"
#include "SDL_loadso.h"
#include "SDL_events.h"
#include "../../events/SDL_mouse_c.h"
#include "../../events/SDL_keyboard_c.h"
/* PND declarations */
#include "SDL_pandora.h"
#include "SDL_pandora_events.h"
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/* WIZ declarations */
#include "GLES/gl.h"
#ifdef WIZ_GLES_LITE
static NativeWindowType hNativeWnd = 0; // A handle to the window we will create.
#endif
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static SDL_bool PND_initialized = SDL_FALSE;
static int
PND_available(void)
{
return 1;
}
static void
PND_destroy(SDL_VideoDevice * device)
{
SDL_VideoData *phdata = (SDL_VideoData *) device->driverdata;
if (device->driverdata != NULL) {
device->driverdata = NULL;
}
}
static SDL_VideoDevice *
PND_create()
{
SDL_VideoDevice *device;
SDL_VideoData *phdata;
int status;
/* Check if pandora could be initialized */
status = PND_available();
if (status == 0) {
/* PND could not be used */
return NULL;
}
/* Initialize SDL_VideoDevice structure */
device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice));
if (device == NULL) {
SDL_OutOfMemory();
return NULL;
}
/* Initialize internal Pandora specific data */
phdata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData));
if (phdata == NULL) {
SDL_OutOfMemory();
SDL_free(device);
return NULL;
}
device->driverdata = phdata;
phdata->egl_initialized = SDL_TRUE;
/* Setup amount of available displays and current display */
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device->num_displays = 0;
device->current_display = 0;
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/* Set device free function */
device->free = PND_destroy;
/* Setup all functions which we can handle */
device->VideoInit = PND_videoinit;
device->VideoQuit = PND_videoquit;
device->GetDisplayModes = PND_getdisplaymodes;
device->SetDisplayMode = PND_setdisplaymode;
device->CreateWindow = PND_createwindow;
device->CreateWindowFrom = PND_createwindowfrom;
device->SetWindowTitle = PND_setwindowtitle;
device->SetWindowIcon = PND_setwindowicon;
device->SetWindowPosition = PND_setwindowposition;
device->SetWindowSize = PND_setwindowsize;
device->ShowWindow = PND_showwindow;
device->HideWindow = PND_hidewindow;
device->RaiseWindow = PND_raisewindow;
device->MaximizeWindow = PND_maximizewindow;
device->MinimizeWindow = PND_minimizewindow;
device->RestoreWindow = PND_restorewindow;
device->SetWindowGrab = PND_setwindowgrab;
device->DestroyWindow = PND_destroywindow;
device->GetWindowWMInfo = PND_getwindowwminfo;
device->GL_LoadLibrary = PND_gl_loadlibrary;
device->GL_GetProcAddress = PND_gl_getprocaddres;
device->GL_UnloadLibrary = PND_gl_unloadlibrary;
device->GL_CreateContext = PND_gl_createcontext;
device->GL_MakeCurrent = PND_gl_makecurrent;
device->GL_SetSwapInterval = PND_gl_setswapinterval;
device->GL_GetSwapInterval = PND_gl_getswapinterval;
device->GL_SwapWindow = PND_gl_swapwindow;
device->GL_DeleteContext = PND_gl_deletecontext;
device->PumpEvents = PND_PumpEvents;
return device;
}
VideoBootStrap PND_bootstrap = {
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#ifdef WIZ_GLES_LITE
"wiz",
"SDL Wiz Video Driver",
#else
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"pandora",
"SDL Pandora Video Driver",
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#endif
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PND_available,
PND_create
};
/*****************************************************************************/
/* SDL Video and Display initialization/handling functions */
/*****************************************************************************/
int
PND_videoinit(_THIS)
{
SDL_VideoDisplay display;
SDL_DisplayMode current_mode;
SDL_zero(current_mode);
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#ifdef WIZ_GLES_LITE
current_mode.w = 320;
current_mode.h = 240;
#else
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current_mode.w = 800;
current_mode.h = 480;
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#endif
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current_mode.refresh_rate = 60;
current_mode.format = SDL_PIXELFORMAT_RGB565;
current_mode.driverdata = NULL;
SDL_zero(display);
display.desktop_mode = current_mode;
display.current_mode = current_mode;
display.driverdata = NULL;
SDL_AddVideoDisplay(&display);
return 1;
}
void
PND_videoquit(_THIS)
{
}
void
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PND_getdisplaymodes(_THIS, SDL_VideoDisplay * display)
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{
}
int
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PND_setdisplaymode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
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{
return 0;
}
int
PND_createwindow(_THIS, SDL_Window * window)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *wdata;
uint32_t winargc = 0;
int32_t status;
/* Allocate window internal data */
wdata = (SDL_WindowData *) SDL_calloc(1, sizeof(SDL_WindowData));
if (wdata == NULL) {
SDL_OutOfMemory();
return -1;
}
/* Setup driver data for this window */
window->driverdata = wdata;
/* Check if window must support OpenGL ES rendering */
if ((window->flags & SDL_WINDOW_OPENGL) == SDL_WINDOW_OPENGL) {
EGLBoolean initstatus;
/* Mark this window as OpenGL ES compatible */
wdata->uses_gles = SDL_TRUE;
/* Create connection to OpenGL ES */
if (phdata->egl_display == EGL_NO_DISPLAY) {
phdata->egl_display = eglGetDisplay((NativeDisplayType) 0);
if (phdata->egl_display == EGL_NO_DISPLAY) {
SDL_SetError("PND: Can't get connection to OpenGL ES");
return -1;
}
initstatus = eglInitialize(phdata->egl_display, NULL, NULL);
if (initstatus != EGL_TRUE) {
SDL_SetError("PND: Can't init OpenGL ES library");
return -1;
}
}
phdata->egl_refcount++;
}
/* Window has been successfully created */
return 0;
}
int
PND_createwindowfrom(_THIS, SDL_Window * window, const void *data)
{
return -1;
}
void
PND_setwindowtitle(_THIS, SDL_Window * window)
{
}
void
PND_setwindowicon(_THIS, SDL_Window * window, SDL_Surface * icon)
{
}
void
PND_setwindowposition(_THIS, SDL_Window * window)
{
}
void
PND_setwindowsize(_THIS, SDL_Window * window)
{
}
void
PND_showwindow(_THIS, SDL_Window * window)
{
}
void
PND_hidewindow(_THIS, SDL_Window * window)
{
}
void
PND_raisewindow(_THIS, SDL_Window * window)
{
}
void
PND_maximizewindow(_THIS, SDL_Window * window)
{
}
void
PND_minimizewindow(_THIS, SDL_Window * window)
{
}
void
PND_restorewindow(_THIS, SDL_Window * window)
{
}
void
PND_setwindowgrab(_THIS, SDL_Window * window)
{
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SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
eglTerminate(phdata->egl_display);
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}
void
PND_destroywindow(_THIS, SDL_Window * window)
{
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SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
eglTerminate(phdata->egl_display);
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}
/*****************************************************************************/
/* SDL Window Manager function */
/*****************************************************************************/
SDL_bool
PND_getwindowwminfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info)
{
if (info->version.major <= SDL_MAJOR_VERSION) {
return SDL_TRUE;
} else {
SDL_SetError("application not compiled with SDL %d.%d\n",
SDL_MAJOR_VERSION, SDL_MINOR_VERSION);
return SDL_FALSE;
}
/* Failed to get window manager information */
return SDL_FALSE;
}
/*****************************************************************************/
/* SDL OpenGL/OpenGL ES functions */
/*****************************************************************************/
int
PND_gl_loadlibrary(_THIS, const char *path)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
/* Check if OpenGL ES library is specified for GF driver */
if (path == NULL) {
path = SDL_getenv("SDL_OPENGL_LIBRARY");
if (path == NULL) {
path = SDL_getenv("SDL_OPENGLES_LIBRARY");
}
}
/* Check if default library loading requested */
if (path == NULL) {
/* Already linked with GF library which provides egl* subset of */
/* functions, use Common profile of OpenGL ES library by default */
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#ifdef WIZ_GLES_LITE
path = "/lib/libopengles_lite.so";
#else
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path = "/usr/lib/libGLES_CM.so";
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#endif
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}
/* Load dynamic library */
_this->gl_config.dll_handle = SDL_LoadObject(path);
if (!_this->gl_config.dll_handle) {
/* Failed to load new GL ES library */
SDL_SetError("PND: Failed to locate OpenGL ES library");
return -1;
}
/* Store OpenGL ES library path and name */
SDL_strlcpy(_this->gl_config.driver_path, path,
SDL_arraysize(_this->gl_config.driver_path));
/* New OpenGL ES library is loaded */
return 0;
}
void *
PND_gl_getprocaddres(_THIS, const char *proc)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
void *function_address;
/* Try to get function address through the egl interface */
function_address = eglGetProcAddress(proc);
if (function_address != NULL) {
return function_address;
}
/* Then try to get function in the OpenGL ES library */
if (_this->gl_config.dll_handle) {
function_address =
SDL_LoadFunction(_this->gl_config.dll_handle, proc);
if (function_address != NULL) {
return function_address;
}
}
/* Failed to get GL ES function address pointer */
SDL_SetError("PND: Cannot locate OpenGL ES function name");
return NULL;
}
void
PND_gl_unloadlibrary(_THIS)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
if (phdata->egl_initialized == SDL_TRUE) {
/* Unload OpenGL ES library */
if (_this->gl_config.dll_handle) {
SDL_UnloadObject(_this->gl_config.dll_handle);
_this->gl_config.dll_handle = NULL;
}
} else {
SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
}
}
SDL_GLContext
PND_gl_createcontext(_THIS, SDL_Window * window)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
SDL_DisplayData *didata =
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(SDL_DisplayData *) window->display->driverdata;
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EGLBoolean status;
int32_t gfstatus;
EGLint configs;
uint32_t attr_pos;
EGLint attr_value;
EGLint cit;
/* Check if EGL was initialized */
if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
return NULL;
}
/* Prepare attributes list to pass them to OpenGL ES */
attr_pos = 0;
wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.red_size;
wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.green_size;
wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.blue_size;
wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
/* Setup alpha size in bits */
if (_this->gl_config.alpha_size) {
wdata->gles_attributes[attr_pos++] = _this->gl_config.alpha_size;
} else {
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
}
/* Setup color buffer size */
if (_this->gl_config.buffer_size) {
wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
} else {
wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
}
/* Setup depth buffer bits */
wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.depth_size;
/* Setup stencil bits */
if (_this->gl_config.stencil_size) {
wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
wdata->gles_attributes[attr_pos++] = _this->gl_config.buffer_size;
} else {
wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
}
/* Set number of samples in multisampling */
if (_this->gl_config.multisamplesamples) {
wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
wdata->gles_attributes[attr_pos++] =
_this->gl_config.multisamplesamples;
}
/* Multisample buffers, OpenGL ES 1.0 spec defines 0 or 1 buffer */
if (_this->gl_config.multisamplebuffers) {
wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
wdata->gles_attributes[attr_pos++] =
_this->gl_config.multisamplebuffers;
}
/* Finish attributes list */
wdata->gles_attributes[attr_pos] = EGL_NONE;
/* Request first suitable framebuffer configuration */
status = eglChooseConfig(phdata->egl_display, wdata->gles_attributes,
wdata->gles_configs, 1, &configs);
if (status != EGL_TRUE) {
SDL_SetError("PND: Can't find closest configuration for OpenGL ES");
return NULL;
}
/* Check if nothing has been found, try "don't care" settings */
if (configs == 0) {
int32_t it;
int32_t jt;
GLint depthbits[4] = { 32, 24, 16, EGL_DONT_CARE };
for (it = 0; it < 4; it++) {
for (jt = 16; jt >= 0; jt--) {
/* Don't care about color buffer bits, use what exist */
/* Replace previous set data with EGL_DONT_CARE */
attr_pos = 0;
wdata->gles_attributes[attr_pos++] = EGL_SURFACE_TYPE;
wdata->gles_attributes[attr_pos++] = EGL_WINDOW_BIT;
wdata->gles_attributes[attr_pos++] = EGL_RED_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos++] = EGL_GREEN_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos++] = EGL_BLUE_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos++] = EGL_ALPHA_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos++] = EGL_BUFFER_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
/* Try to find requested or smallest depth */
if (_this->gl_config.depth_size) {
wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
wdata->gles_attributes[attr_pos++] = depthbits[it];
} else {
wdata->gles_attributes[attr_pos++] = EGL_DEPTH_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
}
if (_this->gl_config.stencil_size) {
wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
wdata->gles_attributes[attr_pos++] = jt;
} else {
wdata->gles_attributes[attr_pos++] = EGL_STENCIL_SIZE;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
}
wdata->gles_attributes[attr_pos++] = EGL_SAMPLES;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos++] = EGL_SAMPLE_BUFFERS;
wdata->gles_attributes[attr_pos++] = EGL_DONT_CARE;
wdata->gles_attributes[attr_pos] = EGL_NONE;
/* Request first suitable framebuffer configuration */
status =
eglChooseConfig(phdata->egl_display,
wdata->gles_attributes,
wdata->gles_configs, 1, &configs);
if (status != EGL_TRUE) {
SDL_SetError
("PND: Can't find closest configuration for OpenGL ES");
return NULL;
}
if (configs != 0) {
break;
}
}
if (configs != 0) {
break;
}
}
/* No available configs */
if (configs == 0) {
SDL_SetError("PND: Can't find any configuration for OpenGL ES");
return NULL;
}
}
/* Initialize config index */
wdata->gles_config = 0;
/* Now check each configuration to find out the best */
for (cit = 0; cit < configs; cit++) {
uint32_t stencil_found;
uint32_t depth_found;
stencil_found = 0;
depth_found = 0;
if (_this->gl_config.stencil_size) {
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[cit], EGL_STENCIL_SIZE,
&attr_value);
if (status == EGL_TRUE) {
if (attr_value != 0) {
stencil_found = 1;
}
}
} else {
stencil_found = 1;
}
if (_this->gl_config.depth_size) {
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[cit], EGL_DEPTH_SIZE,
&attr_value);
if (status == EGL_TRUE) {
if (attr_value != 0) {
depth_found = 1;
}
}
} else {
depth_found = 1;
}
/* Exit from loop if found appropriate configuration */
if ((depth_found != 0) && (stencil_found != 0)) {
break;
}
}
/* If best could not be found, use first */
if (cit == configs) {
cit = 0;
}
wdata->gles_config = cit;
/* Create OpenGL ES context */
wdata->gles_context =
eglCreateContext(phdata->egl_display,
wdata->gles_configs[wdata->gles_config], NULL, NULL);
if (wdata->gles_context == EGL_NO_CONTEXT) {
SDL_SetError("PND: OpenGL ES context creation has been failed");
return NULL;
}
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#ifdef WIZ_GLES_LITE
if( !hNativeWnd ) {
hNativeWnd = (NativeWindowType)malloc(16*1024);
if(!hNativeWnd)
printf( "Error : Wiz framebuffer allocatation failed\n" );
else
printf( "SDL13: Wiz framebuffer allocated: %X\n", hNativeWnd );
}
else {
printf( "SDL13: Wiz framebuffer already allocated: %X\n", hNativeWnd );
}
wdata->gles_surface =
eglCreateWindowSurface(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
hNativeWnd, NULL );
#else
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wdata->gles_surface =
eglCreateWindowSurface(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
(NativeWindowType) 0, NULL);
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#endif
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if (wdata->gles_surface == 0) {
SDL_SetError("Error : eglCreateWindowSurface failed;\n");
return NULL;
}
/* Make just created context current */
status =
eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
wdata->gles_surface, wdata->gles_context);
if (status != EGL_TRUE) {
/* Destroy OpenGL ES surface */
eglDestroySurface(phdata->egl_display, wdata->gles_surface);
eglDestroyContext(phdata->egl_display, wdata->gles_context);
wdata->gles_context = EGL_NO_CONTEXT;
SDL_SetError("PND: Can't set OpenGL ES context on creation");
return NULL;
}
_this->gl_config.accelerated = 1;
/* Always clear stereo enable, since OpenGL ES do not supports stereo */
_this->gl_config.stereo = 0;
/* Get back samples and samplebuffers configurations. Rest framebuffer */
/* parameters could be obtained through the OpenGL ES API */
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
EGL_SAMPLES, &attr_value);
if (status == EGL_TRUE) {
_this->gl_config.multisamplesamples = attr_value;
}
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
EGL_SAMPLE_BUFFERS, &attr_value);
if (status == EGL_TRUE) {
_this->gl_config.multisamplebuffers = attr_value;
}
/* Get back stencil and depth buffer sizes */
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
EGL_DEPTH_SIZE, &attr_value);
if (status == EGL_TRUE) {
_this->gl_config.depth_size = attr_value;
}
status =
eglGetConfigAttrib(phdata->egl_display,
wdata->gles_configs[wdata->gles_config],
EGL_STENCIL_SIZE, &attr_value);
if (status == EGL_TRUE) {
_this->gl_config.stencil_size = attr_value;
}
/* Under PND OpenGL ES output can't be double buffered */
_this->gl_config.double_buffer = 0;
/* GL ES context was successfully created */
return wdata->gles_context;
}
int
PND_gl_makecurrent(_THIS, SDL_Window * window, SDL_GLContext context)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *wdata;
EGLBoolean status;
if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: GF initialization failed, no OpenGL ES support");
return -1;
}
if ((window == NULL) && (context == NULL)) {
status =
eglMakeCurrent(phdata->egl_display, EGL_NO_SURFACE,
EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (status != EGL_TRUE) {
/* Failed to set current GL ES context */
SDL_SetError("PND: Can't set OpenGL ES context");
return -1;
}
} else {
wdata = (SDL_WindowData *) window->driverdata;
if (wdata->gles_surface == EGL_NO_SURFACE) {
SDL_SetError
("PND: OpenGL ES surface is not initialized for this window");
return -1;
}
if (wdata->gles_context == EGL_NO_CONTEXT) {
SDL_SetError
("PND: OpenGL ES context is not initialized for this window");
return -1;
}
if (wdata->gles_context != context) {
SDL_SetError
("PND: OpenGL ES context is not belong to this window");
return -1;
}
status =
eglMakeCurrent(phdata->egl_display, wdata->gles_surface,
wdata->gles_surface, wdata->gles_context);
if (status != EGL_TRUE) {
/* Failed to set current GL ES context */
SDL_SetError("PND: Can't set OpenGL ES context");
return -1;
}
}
return 0;
}
int
PND_gl_setswapinterval(_THIS, int interval)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
EGLBoolean status;
if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: EGL initialization failed, no OpenGL ES support");
return -1;
}
/* Check if OpenGL ES connection has been initialized */
if (phdata->egl_display != EGL_NO_DISPLAY) {
/* Set swap OpenGL ES interval */
status = eglSwapInterval(phdata->egl_display, interval);
if (status == EGL_TRUE) {
/* Return success to upper level */
phdata->swapinterval = interval;
return 0;
}
}
/* Failed to set swap interval */
SDL_SetError("PND: Cannot set swap interval");
return -1;
}
int
PND_gl_getswapinterval(_THIS)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
return -1;
}
/* Return default swap interval value */
return phdata->swapinterval;
}
void
PND_gl_swapwindow(_THIS, SDL_Window * window)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
SDL_WindowData *wdata = (SDL_WindowData *) window->driverdata;
SDL_DisplayData *didata =
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(SDL_DisplayData *) window->display->driverdata;
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if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
return;
}
/* Many applications do not uses glFinish(), so we call it for them */
glFinish();
/* Wait until OpenGL ES rendering is completed */
eglWaitGL();
eglSwapBuffers(phdata->egl_display, wdata->gles_surface);
}
void
PND_gl_deletecontext(_THIS, SDL_GLContext context)
{
SDL_VideoData *phdata = (SDL_VideoData *) _this->driverdata;
EGLBoolean status;
if (phdata->egl_initialized != SDL_TRUE) {
SDL_SetError("PND: GLES initialization failed, no OpenGL ES support");
return;
}
/* Check if OpenGL ES connection has been initialized */
if (phdata->egl_display != EGL_NO_DISPLAY) {
if (context != EGL_NO_CONTEXT) {
status = eglDestroyContext(phdata->egl_display, context);
if (status != EGL_TRUE) {
/* Error during OpenGL ES context destroying */
SDL_SetError("PND: OpenGL ES context destroy error");
return;
}
}
}
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#ifdef WIZ_GLES_LITE
if( hNativeWnd != 0 )
{
free(hNativeWnd);
hNativeWnd = 0;
printf( "SDL13: Wiz framebuffer released\n" );
}
#endif
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return;
}
/* vi: set ts=4 sw=4 expandtab: */