--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwswsegl.c	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,401 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <GLES/egltypes.h>
+#include <wsegl.h>
+#include <pvr2d.h>
+#include <string.h>
+#include <sys/mman.h>
+#include "pvrqwsdrawable_p.h"
+
+#define WSEGL_UNUSED(x) (void)x;
+
+// If the PVR2D version is not specified, then assume MBX-style headers.
+// If the version is defined, then we assume that we have SGX-style headers.
+#if !defined(PVR2D_REV_MAJOR)
+#define WSEGL_CAP_WINDOWS_USE_HW_SYNC WSEGL_CAP_WINDOWS_USE_MBX_SYNC
+#define WSEGL_CAP_PIXMAPS_USE_HW_SYNC WSEGL_CAP_PIXMAPS_USE_MBX_SYNC
+#endif
+
+/* Capability information for the display */
+static WSEGLCaps const wseglDisplayCaps[] = {
+    {WSEGL_CAP_WINDOWS_USE_HW_SYNC, 1},
+    {WSEGL_CAP_PIXMAPS_USE_HW_SYNC, 1},
+    {WSEGL_NO_CAPS, 0}
+};
+
+/* Configuration information for the display */
+static WSEGLConfig wseglDisplayConfigs[] = {
+    {WSEGL_DRAWABLE_WINDOW, WSEGL_PIXELFORMAT_565, WSEGL_FALSE,
+     0, 0, 0, WSEGL_OPAQUE, 0},
+    {WSEGL_DRAWABLE_PIXMAP, WSEGL_PIXELFORMAT_565, WSEGL_FALSE,
+     0, 0, 0, WSEGL_OPAQUE, 0},
+    {WSEGL_NO_DRAWABLE, 0, 0, 0, 0, 0, 0, 0}
+};
+
+/* Determine if nativeDisplay is a valid display handle */
+static WSEGLError wseglIsDisplayValid(NativeDisplayType nativeDisplay)
+{
+    /* We only have the default display in this system */
+    if (nativeDisplay == WSEGL_DEFAULT_DISPLAY)
+        return WSEGL_SUCCESS;
+    else
+        return WSEGL_BAD_NATIVE_DISPLAY;
+}
+
+/* Initialize a native display for use with WSEGL */
+static WSEGLError wseglInitializeDisplay
+    (NativeDisplayType nativeDisplay, WSEGLDisplayHandle *display,
+     const WSEGLCaps **caps, WSEGLConfig **configs)
+{
+    WSEGLPixelFormat pixelFormat;
+
+    /* Bail out if the native display is incorrect */
+    if (nativeDisplay != WSEGL_DEFAULT_DISPLAY)
+        return WSEGL_CANNOT_INITIALISE;
+
+    /* Open the PVR/QWS display, which will initialize the framebuffer */
+    if (!pvrQwsDisplayOpen())
+        return WSEGL_CANNOT_INITIALISE;
+
+    /* Convert the PVR2D pixel format into a WSEGL pixel format */
+    switch (pvrQwsDisplay.screens[0].pixelFormat) {
+        case PVR2D_RGB565:
+            pixelFormat = WSEGL_PIXELFORMAT_565;
+            break;
+
+	case PVR2D_ARGB4444:
+            pixelFormat = WSEGL_PIXELFORMAT_4444;
+            break;
+
+	case PVR2D_ARGB8888:
+            pixelFormat = WSEGL_PIXELFORMAT_8888;
+            break;
+
+        default:
+            pvrQwsDisplayClose();
+            return WSEGL_CANNOT_INITIALISE;
+    }
+    wseglDisplayConfigs[0].ePixelFormat = pixelFormat;
+    wseglDisplayConfigs[1].ePixelFormat = pixelFormat;
+
+    /* The display has been initialized */
+    *display = (WSEGLDisplayHandle)&pvrQwsDisplay;
+    *caps = wseglDisplayCaps;
+    *configs = wseglDisplayConfigs;
+    return WSEGL_SUCCESS;
+}
+
+/* Close the WSEGL display */
+static WSEGLError wseglCloseDisplay(WSEGLDisplayHandle display)
+{
+    if (display == (WSEGLDisplayHandle)&pvrQwsDisplay)
+        pvrQwsDisplayClose();
+    return WSEGL_SUCCESS;
+}
+
+static WSEGLRotationAngle wseglRotationValue(int degrees)
+{
+    switch (degrees) {
+    case 90:  return WSEGL_ROTATE_90;
+    case 180: return WSEGL_ROTATE_180;
+    case 270: return WSEGL_ROTATE_270;
+    default:  return WSEGL_ROTATE_0;
+    }
+}
+
+/* Create the WSEGL drawable version of a native window */
+static WSEGLError wseglCreateWindowDrawable
+    (WSEGLDisplayHandle display, WSEGLConfig *config,
+     WSEGLDrawableHandle *drawable, NativeWindowType nativeWindow,
+     WSEGLRotationAngle *rotationAngle)
+{
+    PvrQwsDrawable *draw;
+
+    WSEGL_UNUSED(display);
+    WSEGL_UNUSED(config);
+
+    /* Check for special handles that indicate framebuffer screens */
+    if (nativeWindow >= (NativeWindowType)0 &&
+            nativeWindow < (NativeWindowType)PVRQWS_MAX_SCREENS) {
+        PvrQwsDrawable *screen = pvrQwsScreenWindow((int)nativeWindow);
+        if (!screen)
+            return WSEGL_OUT_OF_MEMORY;
+        *drawable = (WSEGLDrawableHandle)screen;
+        if (!pvrQwsAllocBuffers(screen))
+            return WSEGL_OUT_OF_MEMORY;
+        *rotationAngle = wseglRotationValue(screen->rotationAngle);
+        return WSEGL_SUCCESS;
+    }
+
+    /* The native window is the winId - fetch the underlying drawable */
+    draw = pvrQwsFetchWindow((long)nativeWindow);
+    if (!draw)
+        return WSEGL_BAD_DRAWABLE;
+
+    /* The drawable is ready to go */
+    *drawable = (WSEGLDrawableHandle)draw;
+    *rotationAngle = wseglRotationValue(draw->rotationAngle);
+    if (!pvrQwsAllocBuffers(draw))
+        return WSEGL_OUT_OF_MEMORY;
+    return WSEGL_SUCCESS;
+}
+
+/* Create the WSEGL drawable version of a native pixmap */
+static WSEGLError wseglCreatePixmapDrawable
+    (WSEGLDisplayHandle display, WSEGLConfig *config,
+     WSEGLDrawableHandle *drawable, NativePixmapType nativePixmap,
+     WSEGLRotationAngle *rotationAngle)
+{
+    WSEGL_UNUSED(display);
+    WSEGL_UNUSED(config);
+    if (!nativePixmap)
+        return WSEGL_BAD_NATIVE_PIXMAP;
+    if (!pvrQwsAllocBuffers((PvrQwsDrawable *)nativePixmap))
+        return WSEGL_OUT_OF_MEMORY;
+    *drawable = (WSEGLDrawableHandle)nativePixmap;
+    *rotationAngle = WSEGL_ROTATE_0;
+    return WSEGL_SUCCESS;
+}
+
+/* Delete a specific drawable */
+static WSEGLError wseglDeleteDrawable(WSEGLDrawableHandle _drawable)
+{
+    PvrQwsDrawable *drawable = (PvrQwsDrawable *)_drawable;
+    if (!drawable || drawable->type == PvrQwsScreen)
+        return WSEGL_SUCCESS;
+    pvrQwsFreeBuffers(drawable);
+    if (pvrQwsReleaseWindow(drawable))
+        pvrQwsDestroyDrawable(drawable);
+    return WSEGL_SUCCESS;
+}
+
+/* Swap the contents of a drawable to the screen */
+static WSEGLError wseglSwapDrawable
+    (WSEGLDrawableHandle _drawable, unsigned long data)
+{
+    WSEGL_UNUSED(data);
+    PvrQwsDrawable *drawable = (PvrQwsDrawable *)_drawable;
+    if (drawable->type != PvrQwsPixmap && !pvrQwsSwapBuffers(drawable, 0))
+        return WSEGL_BAD_DRAWABLE;
+    else
+        return WSEGL_SUCCESS;
+}
+
+/* Set the swap interval of a window drawable */
+static WSEGLError wseglSwapControlInterval
+    (WSEGLDrawableHandle drawable, unsigned long interval)
+{
+    WSEGL_UNUSED(drawable);
+    if (pvrQwsDisplay.flipChain) {
+        PVR2DSetPresentFlipProperties
+            (pvrQwsDisplay.context, pvrQwsDisplay.flipChain,
+             PVR2D_PRESENT_PROPERTY_INTERVAL, 0, 0, 0, NULL, interval);
+    }
+    return WSEGL_SUCCESS;
+}
+
+/* Flush native rendering requests on a drawable */
+static WSEGLError wseglWaitNative
+    (WSEGLDrawableHandle drawable, unsigned long engine)
+{
+    WSEGL_UNUSED(drawable);
+    if (engine == WSEGL_DEFAULT_NATIVE_ENGINE)
+        return WSEGL_SUCCESS;
+    else
+        return WSEGL_BAD_NATIVE_ENGINE;
+}
+
+/* Copy color data from a drawable to a native pixmap */
+static WSEGLError wseglCopyFromDrawable
+    (WSEGLDrawableHandle _drawable, NativePixmapType nativePixmap)
+{
+    PvrQwsDrawable *drawable = (PvrQwsDrawable *)_drawable;
+    PvrQwsDrawable *pixmap = (PvrQwsDrawable *)nativePixmap;
+    PVR2DBLTINFO blit;
+
+    if (!drawable || !drawable->backBuffersValid)
+        return WSEGL_BAD_NATIVE_WINDOW;
+    if (!pixmap || !pixmap->backBuffersValid)
+        return WSEGL_BAD_NATIVE_PIXMAP;
+
+    memset(&blit, 0, sizeof(blit));
+
+    blit.CopyCode = PVR2DROPcopy;
+    blit.BlitFlags = PVR2D_BLIT_DISABLE_ALL;
+
+    blit.pSrcMemInfo = drawable->backBuffers[drawable->currentBackBuffer];
+    blit.SrcStride = drawable->strideBytes;
+    blit.SrcX = 0;
+    blit.SrcY = 0;
+    blit.SizeX = drawable->rect.width;
+    blit.SizeY = drawable->rect.height;
+    blit.SrcFormat = drawable->pixelFormat;
+
+    blit.pDstMemInfo = pixmap->backBuffers[pixmap->currentBackBuffer];
+    blit.DstStride = pixmap->strideBytes;
+    blit.DstX = 0;
+    blit.DstY = 0;
+    blit.DSizeX = pixmap->rect.width;
+    blit.DSizeY = pixmap->rect.height;
+    blit.DstFormat = pixmap->pixelFormat;
+
+    PVR2DBlt(pvrQwsDisplay.context, &blit);
+    PVR2DQueryBlitsComplete
+        (pvrQwsDisplay.context, pixmap->backBuffers[pixmap->currentBackBuffer], 1);
+
+    return WSEGL_SUCCESS;
+}
+
+/* Copy color data from a PBuffer to a native pixmap */
+static WSEGLError wseglCopyFromPBuffer
+    (void *address, unsigned long width, unsigned long height,
+     unsigned long stride, WSEGLPixelFormat format,
+     NativePixmapType nativePixmap)
+{
+    PvrQwsDrawable *pixmap = (PvrQwsDrawable *)nativePixmap;
+    PVR2DFORMAT pixelFormat;
+
+    if (!pixmap)
+        return WSEGL_BAD_NATIVE_PIXMAP;
+
+    /* We can only copy under certain conditions */
+    switch (format) {
+	case WSEGL_PIXELFORMAT_565:
+            pixelFormat = PVR2D_RGB565; break;
+	case WSEGL_PIXELFORMAT_4444:
+            pixelFormat = PVR2D_ARGB4444; break;
+	case WSEGL_PIXELFORMAT_8888:
+            pixelFormat = PVR2D_ARGB8888; break;
+        default:
+            return WSEGL_BAD_CONFIG;
+    }
+    if (width > (unsigned long)(pixmap->rect.width) ||
+        height > (unsigned long)(pixmap->rect.height) ||
+        pixelFormat != pixmap->pixelFormat) {
+        return WSEGL_BAD_CONFIG;
+    }
+
+    /* We'd like to use PVR2DBlt to do this, but there is no easy way
+       to map the virtual "address" into physical space to be able
+       to use the hardware assist.  Use memcpy to do the work instead.
+       Note: PBuffer's are upside down, so we copy from the bottom up */
+    char *srcaddr = (char *)address;
+    char *dstaddr = (char *)(pixmap->backBuffers[pixmap->currentBackBuffer]->pBase);
+    int dststride = pixmap->strideBytes;
+    int srcwidth = ((int)width) * pvrQwsDisplay.screens[0].bytesPerPixel;
+    srcaddr += height * stride;
+    while (height > 0) {
+        srcaddr -= (int)stride;
+        memcpy(dstaddr, srcaddr, srcwidth);
+        dstaddr += dststride;
+        --height;
+    }
+    return WSEGL_SUCCESS;
+}
+
+/* Return the parameters of a drawable that are needed by the EGL layer */
+static WSEGLError wseglGetDrawableParameters
+    (WSEGLDrawableHandle _drawable, WSEGLDrawableParams *sourceParams,
+     WSEGLDrawableParams *renderParams)
+{
+    PvrQwsDrawable *drawable = (PvrQwsDrawable *)_drawable;
+    PVR2DMEMINFO *source, *render;
+    WSEGLPixelFormat pixelFormat;
+
+    if (!pvrQwsGetBuffers(drawable, &source, &render))
+        return WSEGL_BAD_DRAWABLE;
+
+    switch (drawable->pixelFormat) {
+        case PVR2D_RGB565:
+        default:
+            pixelFormat = WSEGL_PIXELFORMAT_565;
+            break;
+
+	case PVR2D_ARGB4444:
+            pixelFormat = WSEGL_PIXELFORMAT_4444;
+            break;
+
+	case PVR2D_ARGB8888:
+            pixelFormat = WSEGL_PIXELFORMAT_8888;
+            break;
+    }
+
+    sourceParams->ui32Width = drawable->rect.width;
+    sourceParams->ui32Height = drawable->rect.height;
+    sourceParams->ui32Stride = drawable->stridePixels;
+    sourceParams->ePixelFormat = pixelFormat;
+    sourceParams->pvLinearAddress = source->pBase;
+    sourceParams->ui32HWAddress = source->ui32DevAddr;
+    sourceParams->hPrivateData = source->hPrivateData;
+
+    renderParams->ui32Width = drawable->rect.width;
+    renderParams->ui32Height = drawable->rect.height;
+    renderParams->ui32Stride = drawable->stridePixels;
+    renderParams->ePixelFormat = pixelFormat;
+    renderParams->pvLinearAddress = render->pBase;
+    renderParams->ui32HWAddress = render->ui32DevAddr;
+    renderParams->hPrivateData = render->hPrivateData;
+
+    return WSEGL_SUCCESS;
+}
+
+static WSEGL_FunctionTable const wseglFunctions = {
+    WSEGL_VERSION,
+    wseglIsDisplayValid,
+    wseglInitializeDisplay,
+    wseglCloseDisplay,
+    wseglCreateWindowDrawable,
+    wseglCreatePixmapDrawable,
+    wseglDeleteDrawable,
+    wseglSwapDrawable,
+    wseglSwapControlInterval,
+    wseglWaitNative,
+    wseglCopyFromDrawable,
+    wseglCopyFromPBuffer,
+    wseglGetDrawableParameters
+};
+
+/* Return the table of WSEGL functions to the EGL implementation */
+const WSEGL_FunctionTable *WSEGL_GetFunctionTablePointer(void)
+{
+    return &wseglFunctions;
+}