--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hostsupport/hostopenvg/src/src/win32/riEGLOS.cpp Wed Oct 06 17:59:01 2010 +0100
@@ -0,0 +1,382 @@
+/*------------------------------------------------------------------------
+ *
+ * EGL 1.3
+ * -------
+ *
+ * Copyright (c) 2007 The Khronos Group Inc.
+ * Portions copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and /or associated documentation files
+ * (the "Materials "), to deal in the Materials without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Materials,
+ * and to permit persons to whom the Materials are furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
+ * THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ *
+ *//**
+ * \file
+ * \brief Simple implementation of EGL 1.3
+ * \note caveats:
+ - always renders into the backbuffer and blits it to window (no single buffered rendering)
+ - no native Windows or Mac OS X pixmap support
+ - no power management events
+ - no support for swap interval
+ * \todo what happens in egl functions when eglTerminate has been called but the context and surface are still in use?
+ * \todo OSDeinitMutex should be called in case getEGL fails.
+ * \todo clarify getThread and getCurrentThread distinction.
+ *//*-------------------------------------------------------------------*/
+
+#include "EGL/egl.h"
+#include "openvg.h"
+#include "riArray.h"
+#include "riMath.h"
+#include "riContext.h"
+#include "riImage.h"
+
+namespace OpenVGRI
+{
+
+#include <windows.h>
+
+void* OSGetCurrentThreadID(void)
+{
+ return (void*)GetCurrentThreadId(); //TODO this is not safe
+}
+
+static HANDLE mutex = NULL;
+static int mutexRefCount = 0;
+//acquired mutex cannot be deinited.
+void OSDeinitMutex(void)
+{
+ RI_ASSERT(mutex);
+ RI_ASSERT(mutexRefCount == 0);
+ BOOL ret = CloseHandle(mutex);
+ RI_ASSERT(ret);
+ RI_UNREF(ret);
+}
+void OSAcquireMutex(void)
+{
+ if(!mutex)
+ {
+ mutex = CreateMutex(NULL, FALSE, NULL); //initially not locked
+ mutexRefCount = 0;
+ }
+ RI_ASSERT(mutex);
+ DWORD ret = WaitForSingleObject(mutex, INFINITE);
+ RI_ASSERT(ret != WAIT_FAILED);
+ RI_UNREF(ret);
+ mutexRefCount++;
+}
+void OSReleaseMutex(void)
+{
+ RI_ASSERT(mutex);
+ mutexRefCount--;
+ RI_ASSERT(mutexRefCount >= 0);
+ BOOL ret = ReleaseMutex(mutex);
+ RI_ASSERT(ret);
+ RI_UNREF(ret);
+}
+
+static bool isBigEndian()
+{
+ static const RIuint32 v = 0x12345678u;
+ const RIuint8* p = (const RIuint8*)&v;
+ RI_ASSERT (*p == (RIuint8)0x12u || *p == (RIuint8)0x78u);
+ return (*p == (RIuint8)(0x12)) ? true : false;
+}
+
+
+#ifdef RI_USE_GLUT
+# include <GL/gl.h>
+# define GLUT_DISABLE_ATEXIT_HACK
+# include "glut.h"
+
+struct OSWindowContext
+{
+ int window;
+ unsigned int* tmp;
+ int tmpWidth;
+ int tmpHeight;
+};
+
+void* OSCreateWindowContext(EGLNativeWindowType window)
+{
+ try
+ {
+ OSWindowContext* ctx = RI_NEW(OSWindowContext, ());
+ ctx->window = (int)window;
+ ctx->tmp = NULL;
+ ctx->tmpWidth = 0;
+ ctx->tmpHeight = 0;
+ return ctx;
+ }
+ catch(std::bad_alloc)
+ {
+ return NULL;
+ }
+}
+
+void OSDestroyWindowContext(void* context)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ RI_DELETE_ARRAY(ctx->tmp);
+ RI_DELETE(ctx);
+ }
+}
+
+bool OSIsWindow(const void* context)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ //TODO implement
+ return true;
+ }
+ return false;
+}
+
+void OSGetWindowSize(const void* context, int& width, int& height)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ int currWin = glutGetWindow();
+ glutSetWindow(ctx->window);
+ width = glutGet(GLUT_WINDOW_WIDTH);
+ height = glutGet(GLUT_WINDOW_HEIGHT);
+ glutSetWindow(currWin);
+ }
+ else
+ {
+ width = 0;
+ height = 0;
+ }
+}
+
+void OSBlitToWindow(void* context, const Drawable* drawable)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ int w = drawable->getWidth();
+ int h = drawable->getHeight();
+
+ int currWin = glutGetWindow();
+ glutSetWindow(ctx->window);
+
+ if(!ctx->tmp || ctx->tmpWidth != w || ctx->tmpHeight != h)
+ {
+ RI_DELETE_ARRAY(ctx->tmp);
+ ctx->tmp = NULL;
+ try
+ {
+ ctx->tmp = RI_NEW_ARRAY(unsigned int, w*h); //throws bad_alloc
+ ctx->tmpWidth = w;
+ ctx->tmpHeight = h;
+ }
+ catch(std::bad_alloc)
+ {
+ //do nothing
+ }
+ }
+
+ if(ctx->tmp)
+ {
+ glViewport(0, 0, w, h);
+ glDisable(GL_DEPTH_TEST);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ //NOTE: we assume here that the display is always in sRGB color space
+ VGImageFormat f = VG_sXBGR_8888;
+ if(isBigEndian())
+ f = VG_sRGBX_8888;
+ vgReadPixels(ctx->tmp, w*sizeof(unsigned int), f, 0, 0, w, h);
+ glDrawPixels(w, h, GL_RGBA, GL_UNSIGNED_BYTE, ctx->tmp);
+ }
+
+ glutSwapBuffers(); //shows the OpenGL frame buffer
+ glutSetWindow(currWin); //restore the current window
+ }
+}
+
+EGLDisplay OSGetDisplay(EGLNativeDisplayType display_id)
+{
+ return (EGLDisplay)display_id; //just casting to (EGLDisplay) should be enough to make a unique identifier out of this
+}
+
+#else
+//Windows native
+#ifndef _WINDOWS_
+# define _WIN32_WINNT 0x0400
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+
+struct OSWindowContext
+{
+ HWND window;
+ HDC bufDC;
+ HBITMAP bufDIB;
+ unsigned int* tmp;
+ int tmpWidth;
+ int tmpHeight;
+};
+
+OSWindowContext* OSCreateWindowContext(EGLNativeWindowType window)
+{
+ OSWindowContext* ctx = NULL;
+ try
+ {
+ ctx = RI_NEW(OSWindowContext, ());
+ }
+ catch(std::bad_alloc)
+ {
+ return NULL;
+ }
+
+ ctx->window = (HWND)window;
+ HDC winDC = GetDC(ctx->window);
+ ctx->bufDC = CreateCompatibleDC(winDC);
+ ReleaseDC(ctx->window, winDC);
+ if(!ctx->bufDC)
+ {
+ RI_DELETE(ctx);
+ return NULL;
+ }
+
+ ctx->bufDIB = NULL;
+ ctx->tmp = NULL;
+ ctx->tmpWidth = 0;
+ ctx->tmpHeight = 0;
+ return ctx;
+}
+
+void OSDestroyWindowContext(OSWindowContext* context)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ if(ctx->bufDC)
+ {
+ SelectObject(ctx->bufDC, NULL);
+ DeleteDC(ctx->bufDC);
+ }
+ if(ctx->bufDIB)
+ DeleteObject(ctx->bufDIB);
+ RI_DELETE(ctx);
+ }
+}
+
+bool OSIsWindow(const OSWindowContext* context)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ if(IsWindow(ctx->window))
+ return true;
+ }
+ return false;
+}
+
+void OSGetWindowSize(const OSWindowContext* context, int& width, int& height)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ RECT rect;
+ GetClientRect(ctx->window, &rect);
+ width = rect.right - rect.left;
+ height = rect.bottom - rect.top;
+ }
+ else
+ {
+ width = 0;
+ height = 0;
+ }
+}
+
+void OSBlitToWindow(OSWindowContext* context, const Drawable* drawable)
+{
+ OSWindowContext* ctx = (OSWindowContext*)context;
+ if(ctx)
+ {
+ int w = drawable->getWidth();
+ int h = drawable->getHeight();
+
+ if(!ctx->tmp || !ctx->bufDIB || ctx->tmpWidth != w || ctx->tmpHeight != h)
+ {
+ if(ctx->bufDIB)
+ DeleteObject(ctx->bufDIB);
+ ctx->tmp = NULL;
+ ctx->bufDIB = NULL;
+
+ ctx->tmpWidth = w;
+ ctx->tmpHeight = h;
+
+ struct
+ {
+ BITMAPINFOHEADER header;
+ DWORD rMask;
+ DWORD gMask;
+ DWORD bMask;
+ } bmi;
+ bmi.header.biSize = sizeof(BITMAPINFOHEADER);
+ bmi.header.biWidth = w;
+ bmi.header.biHeight = h;
+ bmi.header.biPlanes = 1;
+ bmi.header.biBitCount = (WORD)32;
+ bmi.header.biCompression = BI_BITFIELDS;
+ bmi.rMask = 0x000000ff;
+ bmi.gMask = 0x0000ff00;
+ bmi.bMask = 0x00ff0000;
+ ctx->bufDIB = CreateDIBSection(ctx->bufDC, (BITMAPINFO*)&bmi, DIB_RGB_COLORS, (void**)&ctx->tmp, NULL, 0);
+ if(!ctx->bufDIB)
+ {
+ ctx->tmp = NULL;
+ return;
+ }
+ }
+
+ if(ctx->tmp)
+ {
+ //NOTE: we assume here that the display is always in sRGB color space
+ GdiFlush();
+ VGImageFormat f = VG_sABGR_8888_PRE;
+ if(isBigEndian())
+ f = VG_sRGBA_8888_PRE;
+ vgReadPixels(ctx->tmp, w*sizeof(unsigned int), f, 0, 0, w, h);
+
+ SelectObject(ctx->bufDC, ctx->bufDIB);
+ HDC winDC = GetDC(ctx->window);
+ BitBlt(winDC, 0, 0, w, h, ctx->bufDC, 0, 0, SRCCOPY);
+ ReleaseDC(ctx->window, winDC);
+ SelectObject(ctx->bufDC, NULL);
+ }
+ }
+}
+
+EGLDisplay OSGetDisplay(EGLNativeDisplayType display_id)
+{
+ RI_UNREF(display_id);
+ return (EGLDisplay)1; //support only a single display
+}
+
+#endif
+
+} //namespace OpenVGRI