diff options
Diffstat (limited to 'src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c')
| -rw-r--r-- | src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c | 830 |
1 files changed, 830 insertions, 0 deletions
diff --git a/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c new file mode 100644 index 0000000000..8dc0120fe1 --- /dev/null +++ b/src/plugins/gfxdrivers/powervr/QWSWSEGL/pvrqwsdrawable.c @@ -0,0 +1,830 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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 "pvrqwsdrawable_p.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> +#include <sys/mman.h> +#include <sys/ioctl.h> +#include <linux/fb.h> +#include <fcntl.h> +#include <unistd.h> + +PvrQwsDisplay pvrQwsDisplay; + +static void pvrQwsDestroyDrawableForced(PvrQwsDrawable *drawable); + +/* Initialize the /dev/fbN device for a specific screen */ +static int pvrQwsInitFbScreen(int screen) +{ + struct fb_var_screeninfo var; + struct fb_fix_screeninfo fix; + unsigned long start; + unsigned long length; + int width, height, stride; + PVR2DFORMAT format; + void *mapped; + int fd, bytesPerPixel; + char name[64]; + PVR2DMEMINFO *memInfo; + unsigned long pageAddresses[2]; + + /* Bail out if already initialized, or the number is incorrect */ + if (screen < 0 || screen >= PVRQWS_MAX_SCREENS) + return 0; + if (pvrQwsDisplay.screens[screen].initialized) + return 1; + + /* Open the framebuffer and fetch its properties */ + sprintf(name, "/dev/fb%d", screen); + fd = open(name, O_RDWR, 0); + if (fd < 0) { + perror(name); + return 0; + } + if (ioctl(fd, FBIOGET_VSCREENINFO, &var) < 0) { + perror("FBIOGET_VSCREENINFO"); + close(fd); + return 0; + } + if (ioctl(fd, FBIOGET_FSCREENINFO, &fix) < 0) { + perror("FBIOGET_FSCREENINFO"); + close(fd); + return 0; + } + width = var.xres; + height = var.yres; + bytesPerPixel = var.bits_per_pixel / 8; + stride = fix.line_length; + format = PVR2D_1BPP; + if (var.bits_per_pixel == 16) { + if (var.red.length == 5 && var.green.length == 6 && + var.blue.length == 5 && var.red.offset == 11 && + var.green.offset == 5 && var.blue.offset == 0) { + format = PVR2D_RGB565; + } + if (var.red.length == 4 && var.green.length == 4 && + var.blue.length == 4 && var.transp.length == 4 && + var.red.offset == 8 && var.green.offset == 4 && + var.blue.offset == 0 && var.transp.offset == 12) { + format = PVR2D_ARGB4444; + } + } else if (var.bits_per_pixel == 32) { + if (var.red.length == 8 && var.green.length == 8 && + var.blue.length == 8 && var.transp.length == 8 && + var.red.offset == 16 && var.green.offset == 8 && + var.blue.offset == 0 && var.transp.offset == 24) { + format = PVR2D_ARGB8888; + } + } + if (format == PVR2D_1BPP) { + fprintf(stderr, "%s: could not find a suitable PVR2D pixel format\n", name); + close(fd); + return 0; + } + start = fix.smem_start; + length = var.xres_virtual * var.yres_virtual * bytesPerPixel; + + if (screen == 0) { + /* We use PVR2DGetFrameBuffer to map the first screen. + On some chipsets it is more reliable than using PVR2DMemWrap */ + mapped = 0; + memInfo = 0; + } else { + /* Other screens: map the framebuffer region into memory */ + mapped = mmap(0, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (!mapped || mapped == (void *)(-1)) { + perror("mmap"); + close(fd); + return 0; + } + + /* Allocate a PVR2D memory region for the framebuffer */ + memInfo = 0; + if (pvrQwsDisplay.context) { + pageAddresses[0] = start & 0xFFFFF000; + pageAddresses[1] = 0; + if (PVR2DMemWrap + (pvrQwsDisplay.context, mapped, PVR2D_WRAPFLAG_CONTIGUOUS, + length, pageAddresses, &memInfo) != PVR2D_OK) { + munmap(mapped, length); + close(fd); + return 0; + } + } + } + + /* We don't need the file descriptor any more */ + close(fd); + + /* The framebuffer is ready, so initialize the PvrQwsScreenInfo */ + pvrQwsDisplay.screens[screen].screenRect.x = 0; + pvrQwsDisplay.screens[screen].screenRect.y = 0; + pvrQwsDisplay.screens[screen].screenRect.width = width; + pvrQwsDisplay.screens[screen].screenRect.height = height; + pvrQwsDisplay.screens[screen].screenStride = stride; + pvrQwsDisplay.screens[screen].pixelFormat = format; + pvrQwsDisplay.screens[screen].bytesPerPixel = bytesPerPixel; + pvrQwsDisplay.screens[screen].screenDrawable = 0; + if (mapped) { + /* Don't set these fields if mapped is 0, because PVR2DGetFrameBuffer + may have already been called and set them */ + pvrQwsDisplay.screens[screen].frameBuffer = memInfo; + pvrQwsDisplay.screens[screen].mapped = mapped; + } + pvrQwsDisplay.screens[screen].mappedLength = length; + pvrQwsDisplay.screens[screen].screenStart = start; + pvrQwsDisplay.screens[screen].needsUnmap = (mapped != 0); + pvrQwsDisplay.screens[screen].initialized = 1; + return 1; +} + +/* Called when a new drawable is added to ensure that we have a + PVR2D context and framebuffer PVR2DMEMINFO blocks */ +static int pvrQwsAddDrawable(void) +{ + int numDevs, screen; + PVR2DDEVICEINFO *devs; + unsigned long devId; + unsigned long pageAddresses[2]; + PVR2DMEMINFO *memInfo; + PVR2DDISPLAYINFO displayInfo; + + /* Bail out early if this is not the first drawable */ + if (pvrQwsDisplay.numDrawables > 0) { + ++(pvrQwsDisplay.numDrawables); + return 1; + } + + /* Find the first PVR2D device in the system and open it */ + numDevs = PVR2DEnumerateDevices(0); + if (numDevs <= 0) + return 0; + devs = (PVR2DDEVICEINFO *)malloc(sizeof(PVR2DDEVICEINFO) * numDevs); + if (!devs) + return 0; + if (PVR2DEnumerateDevices(devs) != PVR2D_OK) { + free(devs); + return 0; + } + devId = devs[0].ulDevID; + free(devs); + if (PVR2DCreateDeviceContext(devId, &pvrQwsDisplay.context, 0) != PVR2D_OK) + return 0; + pvrQwsDisplay.numFlipBuffers = 0; + pvrQwsDisplay.flipChain = 0; + if (PVR2DGetDeviceInfo(pvrQwsDisplay.context, &displayInfo) == PVR2D_OK) { + if (displayInfo.ulMaxFlipChains > 0 && displayInfo.ulMaxBuffersInChain > 0) + pvrQwsDisplay.numFlipBuffers = displayInfo.ulMaxBuffersInChain; + if (pvrQwsDisplay.numFlipBuffers > PVRQWS_MAX_FLIP_BUFFERS) + pvrQwsDisplay.numFlipBuffers = PVRQWS_MAX_FLIP_BUFFERS; + } + + /* Create the PVR2DMEMINFO blocks for the active framebuffers */ + for (screen = 0; screen < PVRQWS_MAX_SCREENS; ++screen) { + if (screen != 0 && pvrQwsDisplay.screens[screen].mapped) { + pageAddresses[0] + = pvrQwsDisplay.screens[screen].screenStart & 0xFFFFF000; + pageAddresses[1] = 0; + if (PVR2DMemWrap + (pvrQwsDisplay.context, + pvrQwsDisplay.screens[screen].mapped, + PVR2D_WRAPFLAG_CONTIGUOUS, + pvrQwsDisplay.screens[screen].mappedLength, + pageAddresses, &memInfo) != PVR2D_OK) { + PVR2DDestroyDeviceContext(pvrQwsDisplay.context); + pvrQwsDisplay.context = 0; + return 0; + } + pvrQwsDisplay.screens[screen].frameBuffer = memInfo; + } else if (screen == 0) { + if (PVR2DGetFrameBuffer + (pvrQwsDisplay.context, + PVR2D_FB_PRIMARY_SURFACE, &memInfo) != PVR2D_OK) { + fprintf(stderr, "QWSWSEGL: could not get the primary framebuffer surface\n"); + PVR2DDestroyDeviceContext(pvrQwsDisplay.context); + pvrQwsDisplay.context = 0; + return 0; + } + pvrQwsDisplay.screens[screen].frameBuffer = memInfo; + pvrQwsDisplay.screens[screen].mapped = memInfo->pBase; + } + } + + /* Create a flip chain for the screen if supported by the hardware */ + pvrQwsDisplay.usePresentBlit = 0; + if (pvrQwsDisplay.numFlipBuffers > 0) { + long stride = 0; + unsigned long flipId = 0; + unsigned long numBuffers; + if (PVR2DCreateFlipChain(pvrQwsDisplay.context, 0, + //PVR2D_CREATE_FLIPCHAIN_SHARED | + //PVR2D_CREATE_FLIPCHAIN_QUERY, + pvrQwsDisplay.numFlipBuffers, + pvrQwsDisplay.screens[0].screenRect.width, + pvrQwsDisplay.screens[0].screenRect.height, + pvrQwsDisplay.screens[0].pixelFormat, + &stride, &flipId, &(pvrQwsDisplay.flipChain)) + == PVR2D_OK) { + pvrQwsDisplay.screens[0].screenStride = stride; + PVR2DGetFlipChainBuffers(pvrQwsDisplay.context, + pvrQwsDisplay.flipChain, + &numBuffers, + pvrQwsDisplay.flipBuffers); + } else { + pvrQwsDisplay.flipChain = 0; + pvrQwsDisplay.numFlipBuffers = 0; + } + + /* PVR2DPresentBlt is a little more reliable than PVR2DBlt + when flip chains are present, even if we cannot create a + flip chain at the moment */ + pvrQwsDisplay.usePresentBlit = 1; + } + + /* The context is ready to go */ + ++(pvrQwsDisplay.numDrawables); + return 1; +} + +/* Called when the last drawable is destroyed. The PVR2D context + will be destroyed but the raw framebuffer memory will stay mapped */ +static void pvrQwsDestroyContext(void) +{ + int screen; + for (screen = 0; screen < PVRQWS_MAX_SCREENS; ++screen) { + if (pvrQwsDisplay.screens[screen].frameBuffer) { + PVR2DMemFree + (pvrQwsDisplay.context, + pvrQwsDisplay.screens[screen].frameBuffer); + pvrQwsDisplay.screens[screen].frameBuffer = 0; + } + } + + if (pvrQwsDisplay.numFlipBuffers > 0) + PVR2DDestroyFlipChain(pvrQwsDisplay.context, pvrQwsDisplay.flipChain); + PVR2DDestroyDeviceContext(pvrQwsDisplay.context); + pvrQwsDisplay.context = 0; + pvrQwsDisplay.flipChain = 0; + pvrQwsDisplay.numFlipBuffers = 0; + pvrQwsDisplay.usePresentBlit = 0; +} + +int pvrQwsDisplayOpen(void) +{ + int screen; + + /* If the display is already open, increase reference count and return */ + if (pvrQwsDisplay.refCount > 0) { + ++(pvrQwsDisplay.refCount); + return 1; + } + + /* Open the framebuffer and map it directly */ + if (!pvrQwsInitFbScreen(0)) { + --(pvrQwsDisplay.refCount); + return 0; + } + + /* Clear the other screens. We will create them if they are referenced */ + for (screen = 1; screen < PVRQWS_MAX_SCREENS; ++screen) + memset(&(pvrQwsDisplay.screens[screen]), 0, sizeof(PvrQwsScreenInfo)); + + /* The display is open and ready */ + ++(pvrQwsDisplay.refCount); + return 1; +} + +void pvrQwsDisplayClose(void) +{ + int screen; + + if (pvrQwsDisplay.refCount == 0) + return; + if (--(pvrQwsDisplay.refCount) > 0) + return; + + /* Prevent pvrQwsDestroyContext from being called for the time being */ + ++pvrQwsDisplay.numDrawables; + + /* Free the screens */ + for (screen = 0; screen < PVRQWS_MAX_SCREENS; ++screen) { + PvrQwsScreenInfo *info = &(pvrQwsDisplay.screens[screen]); + if (info->screenDrawable) + pvrQwsDestroyDrawableForced(info->screenDrawable); + if (info->frameBuffer) + PVR2DMemFree(pvrQwsDisplay.context, info->frameBuffer); + if (info->mapped && info->needsUnmap) + munmap(info->mapped, info->mappedLength); + } + + /* Now it is safe to destroy the PVR2D context */ + --pvrQwsDisplay.numDrawables; + if (pvrQwsDisplay.context) + PVR2DDestroyDeviceContext(pvrQwsDisplay.context); + + memset(&pvrQwsDisplay, 0, sizeof(pvrQwsDisplay)); +} + +int pvrQwsDisplayIsOpen(void) +{ + return (pvrQwsDisplay.refCount > 0); +} + +/* Ensure that a specific screen has been initialized */ +static int pvrQwsEnsureScreen(int screen) +{ + if (screen < 0 || screen >= PVRQWS_MAX_SCREENS) + return 0; + if (!screen) + return 1; + return pvrQwsInitFbScreen(screen); +} + +PvrQwsDrawable *pvrQwsScreenWindow(int screen) +{ + PvrQwsDrawable *drawable; + + if (!pvrQwsEnsureScreen(screen)) + return 0; + + drawable = pvrQwsDisplay.screens[screen].screenDrawable; + if (drawable) + return drawable; + + drawable = (PvrQwsDrawable *)calloc(1, sizeof(PvrQwsDrawable)); + if (!drawable) + return 0; + + drawable->type = PvrQwsScreen; + drawable->screen = screen; + drawable->pixelFormat = pvrQwsDisplay.screens[screen].pixelFormat; + drawable->rect = pvrQwsDisplay.screens[screen].screenRect; + drawable->visibleRects[0] = drawable->rect; + drawable->numVisibleRects = 1; + drawable->isFullScreen = 1; + + if (!pvrQwsAddDrawable()) { + free(drawable); + return 0; + } + + pvrQwsDisplay.screens[screen].screenDrawable = drawable; + + return drawable; +} + +PvrQwsDrawable *pvrQwsCreateWindow(int screen, long winId, const PvrQwsRect *rect) +{ + PvrQwsDrawable *drawable; + + if (!pvrQwsEnsureScreen(screen)) + return 0; + + drawable = (PvrQwsDrawable *)calloc(1, sizeof(PvrQwsDrawable)); + if (!drawable) + return 0; + + drawable->type = PvrQwsWindow; + drawable->winId = winId; + drawable->refCount = 1; + drawable->screen = screen; + drawable->pixelFormat = pvrQwsDisplay.screens[screen].pixelFormat; + drawable->rect = *rect; + + if (!pvrQwsAddDrawable()) { + free(drawable); + return 0; + } + + drawable->nextWinId = pvrQwsDisplay.firstWinId; + pvrQwsDisplay.firstWinId = drawable; + + return drawable; +} + +PvrQwsDrawable *pvrQwsFetchWindow(long winId) +{ + PvrQwsDrawable *drawable = pvrQwsDisplay.firstWinId; + while (drawable != 0 && drawable->winId != winId) + drawable = drawable->nextWinId; + + if (drawable) + ++(drawable->refCount); + return drawable; +} + +int pvrQwsReleaseWindow(PvrQwsDrawable *drawable) +{ + if (drawable->type == PvrQwsWindow) + return (--(drawable->refCount) <= 0); + else + return 0; +} + +PvrQwsDrawable *pvrQwsCreatePixmap(int width, int height, int screen) +{ + PvrQwsDrawable *drawable; + + if (!pvrQwsEnsureScreen(screen)) + return 0; + + drawable = (PvrQwsDrawable *)calloc(1, sizeof(PvrQwsDrawable)); + if (!drawable) + return 0; + + drawable->type = PvrQwsPixmap; + drawable->screen = screen; + drawable->pixelFormat = pvrQwsDisplay.screens[screen].pixelFormat; + drawable->rect.x = 0; + drawable->rect.y = 0; + drawable->rect.width = width; + drawable->rect.height = height; + + if (!pvrQwsAddDrawable()) { + free(drawable); + return 0; + } + + return drawable; +} + +static void pvrQwsDestroyDrawableForced(PvrQwsDrawable *drawable) +{ + /* Remove the drawable from the display's winId list */ + PvrQwsDrawable *current = pvrQwsDisplay.firstWinId; + PvrQwsDrawable *prev = 0; + while (current != 0 && current != drawable) { + prev = current; + current = current->nextWinId; + } + if (current != 0) { + if (prev) + prev->nextWinId = current->nextWinId; + else + pvrQwsDisplay.firstWinId = current->nextWinId; + } + + pvrQwsFreeBuffers(drawable); + free(drawable); + + --pvrQwsDisplay.numDrawables; + if (pvrQwsDisplay.numDrawables == 0) + pvrQwsDestroyContext(); +} + +void pvrQwsDestroyDrawable(PvrQwsDrawable *drawable) +{ + if (drawable && drawable->type != PvrQwsScreen) + pvrQwsDestroyDrawableForced(drawable); +} + +PvrQwsDrawableType pvrQwsGetDrawableType(PvrQwsDrawable *drawable) +{ + return drawable->type; +} + +void pvrQwsSetVisibleRegion + (PvrQwsDrawable *drawable, const PvrQwsRect *rects, int numRects) +{ + int index, indexOut; + PvrQwsRect *rect; + PvrQwsRect *screenRect; + + /* Visible regions don't make sense for pixmaps */ + if (drawable->type == PvrQwsPixmap) + return; + + /* Restrict the number of rectangles to prevent buffer overflow */ + if (numRects > PVRQWS_MAX_VISIBLE_RECTS) + numRects = PVRQWS_MAX_VISIBLE_RECTS; + if (numRects > 0) + memcpy(drawable->visibleRects, rects, numRects * sizeof(PvrQwsRect)); + + /* Convert the rectangles into screen-relative co-ordinates and + then clamp them to the screen boundaries. If any of the + clamped rectangles are empty, remove them from the list */ + screenRect = &(pvrQwsDisplay.screens[drawable->screen].screenRect); + indexOut = 0; + for (index = 0, rect = drawable->visibleRects; index < numRects; ++index, ++rect) { + if (rect->x < 0) { + rect->width += rect->x; + rect->x = 0; + if (rect->width < 0) + rect->width = 0; + } else if (rect->x >= screenRect->width) { + rect->x = screenRect->width; + rect->width = 0; + } + if ((rect->x + rect->width) > screenRect->width) { + rect->width = screenRect->width - rect->x; + } + if (rect->y < 0) { + rect->height += rect->y; + rect->y = 0; + if (rect->height < 0) + rect->height = 0; + } else if (rect->y >= screenRect->height) { + rect->y = screenRect->height; + rect->height = 0; + } + if ((rect->y + rect->height) > screenRect->height) { + rect->height = screenRect->height - rect->y; + } + if (rect->width > 0 && rect->height > 0) { + if (index != indexOut) + drawable->visibleRects[indexOut] = *rect; + ++indexOut; + } + } + drawable->numVisibleRects = indexOut; +} + +void pvrQwsClearVisibleRegion(PvrQwsDrawable *drawable) +{ + if (drawable->type != PvrQwsPixmap) + drawable->numVisibleRects = 0; +} + +void pvrQwsSetGeometry(PvrQwsDrawable *drawable, const PvrQwsRect *rect) +{ + /* We can only change the geometry of window drawables */ + if (drawable->type != PvrQwsWindow) + return; + + /* If the position has changed, then clear the visible region */ + if (drawable->rect.x != rect->x || drawable->rect.y != rect->y) { + drawable->rect.x = rect->x; + drawable->rect.y = rect->y; + drawable->numVisibleRects = 0; + } + + /* If the size has changed, then clear the visible region and + invalidate the drawable's buffers. Invalidating the buffers + will force EGL to recreate the drawable, which will then + allocate new buffers for the new size */ + if (drawable->rect.width != rect->width || + drawable->rect.height != rect->height) { + drawable->rect.width = rect->width; + drawable->rect.height = rect->height; + drawable->numVisibleRects = 0; + pvrQwsInvalidateBuffers(drawable); + } +} + +void pvrQwsGetGeometry(PvrQwsDrawable *drawable, PvrQwsRect *rect) +{ + *rect = drawable->rect; +} + +void pvrQwsSetRotation(PvrQwsDrawable *drawable, int angle) +{ + if (drawable->rotationAngle != angle) { + drawable->rotationAngle = angle; + + /* Force the buffers to be recreated if the rotation angle changes */ + pvrQwsInvalidateBuffers(drawable); + } +} + +int pvrQwsGetStride(PvrQwsDrawable *drawable) +{ + if (drawable->backBuffersValid) + return drawable->strideBytes; + else + return 0; +} + +PvrQwsPixelFormat pvrQwsGetPixelFormat(PvrQwsDrawable *drawable) +{ + return (PvrQwsPixelFormat)(drawable->pixelFormat); +} + +void *pvrQwsGetRenderBuffer(PvrQwsDrawable *drawable) +{ + if (drawable->backBuffersValid) + return drawable->backBuffers[drawable->currentBackBuffer]->pBase; + else + return 0; +} + +int pvrQwsAllocBuffers(PvrQwsDrawable *drawable) +{ + int index; + int numBuffers = PVRQWS_MAX_BACK_BUFFERS; + if (drawable->type == PvrQwsPixmap) + numBuffers = 1; + if (drawable->backBuffers[0]) { + if (drawable->backBuffersValid) + return 1; + if (!drawable->usingFlipBuffers) { + for (index = 0; index < numBuffers; ++index) + PVR2DMemFree(pvrQwsDisplay.context, drawable->backBuffers[index]); + } + } + drawable->stridePixels = (drawable->rect.width + 31) & ~31; + drawable->strideBytes = + drawable->stridePixels * + pvrQwsDisplay.screens[drawable->screen].bytesPerPixel; + drawable->usingFlipBuffers = + (pvrQwsDisplay.numFlipBuffers > 0 && drawable->isFullScreen); + if (drawable->usingFlipBuffers) { + if (numBuffers > (int)(pvrQwsDisplay.numFlipBuffers)) + numBuffers = pvrQwsDisplay.numFlipBuffers; + for (index = 0; index < numBuffers; ++index) + drawable->backBuffers[index] = pvrQwsDisplay.flipBuffers[index]; + } else { + for (index = 0; index < numBuffers; ++index) { + if (PVR2DMemAlloc(pvrQwsDisplay.context, + drawable->strideBytes * drawable->rect.height, + 128, 0, + &(drawable->backBuffers[index])) != PVR2D_OK) { + while (--index >= 0) + PVR2DMemFree(pvrQwsDisplay.context, drawable->backBuffers[index]); + memset(drawable->backBuffers, 0, sizeof(drawable->backBuffers)); + drawable->backBuffersValid = 0; + return 0; + } + } + } + for (index = numBuffers; index < PVRQWS_MAX_BACK_BUFFERS; ++index) { + drawable->backBuffers[index] = drawable->backBuffers[0]; + } + drawable->backBuffersValid = 1; + drawable->currentBackBuffer = 0; + return 1; +} + +void pvrQwsFreeBuffers(PvrQwsDrawable *drawable) +{ + int index; + int numBuffers = PVRQWS_MAX_BACK_BUFFERS; + if (drawable->type == PvrQwsPixmap) + numBuffers = 1; + if (!drawable->usingFlipBuffers) { + for (index = 0; index < numBuffers; ++index) { + if (drawable->backBuffers[index]) + PVR2DMemFree(pvrQwsDisplay.context, drawable->backBuffers[index]); + } + } + memset(drawable->backBuffers, 0, sizeof(drawable->backBuffers)); + drawable->backBuffersValid = 0; + drawable->usingFlipBuffers = 0; +} + +void pvrQwsInvalidateBuffers(PvrQwsDrawable *drawable) +{ + drawable->backBuffersValid = 0; +} + +int pvrQwsGetBuffers + (PvrQwsDrawable *drawable, PVR2DMEMINFO **source, PVR2DMEMINFO **render) +{ + if (!drawable->backBuffersValid) + return 0; + *render = drawable->backBuffers[drawable->currentBackBuffer]; + *source = drawable->backBuffers + [(drawable->currentBackBuffer + PVRQWS_MAX_BACK_BUFFERS - 1) % + PVRQWS_MAX_BACK_BUFFERS]; + return 1; +} + +int pvrQwsSwapBuffers(PvrQwsDrawable *drawable, int repaintOnly) +{ + PVR2DMEMINFO *buffer; + PvrQwsRect *rect; + int index; + + /* Bail out if the back buffers have been invalidated */ + if (!drawable->backBuffersValid) + return 0; + + /* If there is a swap function, then use that instead */ + if (drawable->swapFunction) { + (*(drawable->swapFunction))(drawable, drawable->userData, repaintOnly); + if (!repaintOnly) { + drawable->currentBackBuffer + = (drawable->currentBackBuffer + 1) % PVRQWS_MAX_BACK_BUFFERS; + } + return 1; + } + + /* Iterate through the visible rectangles and blit them to the screen */ + if (!repaintOnly) { + index = drawable->currentBackBuffer; + } else { + index = (drawable->currentBackBuffer + PVRQWS_MAX_BACK_BUFFERS - 1) + % PVRQWS_MAX_BACK_BUFFERS; + } + buffer = drawable->backBuffers[index]; + rect = drawable->visibleRects; + if (drawable->usingFlipBuffers) { + PVR2DPresentFlip(pvrQwsDisplay.context, pvrQwsDisplay.flipChain, buffer, 0); + } else if (pvrQwsDisplay.usePresentBlit && drawable->numVisibleRects > 0) { + PVR2DRECT pvrRects[PVRQWS_MAX_VISIBLE_RECTS]; + for (index = 0; index < drawable->numVisibleRects; ++index, ++rect) { + pvrRects[index].left = rect->x; + pvrRects[index].top = rect->y; + pvrRects[index].right = rect->x + rect->width; + pvrRects[index].bottom = rect->y + rect->height; + } + for (index = 0; index < drawable->numVisibleRects; index += 4) { + int numClip = drawable->numVisibleRects - index; + if (numClip > 4) /* No more than 4 clip rects at a time */ + numClip = 4; + PVR2DSetPresentBltProperties + (pvrQwsDisplay.context, + PVR2D_PRESENT_PROPERTY_SRCSTRIDE | + PVR2D_PRESENT_PROPERTY_DSTSIZE | + PVR2D_PRESENT_PROPERTY_DSTPOS | + PVR2D_PRESENT_PROPERTY_CLIPRECTS, + drawable->strideBytes, + drawable->rect.width, drawable->rect.height, + drawable->rect.x, drawable->rect.y, + numClip, pvrRects + index, 0); + PVR2DPresentBlt(pvrQwsDisplay.context, buffer, 0); + } + PVR2DQueryBlitsComplete(pvrQwsDisplay.context, buffer, 1); + } else { + /* TODO: use PVR2DBltClipped for faster transfers of clipped windows */ + PVR2DBLTINFO blit; + for (index = 0; index < drawable->numVisibleRects; ++index, ++rect) { + memset(&blit, 0, sizeof(blit)); + + blit.CopyCode = PVR2DROPcopy; + blit.BlitFlags = PVR2D_BLIT_DISABLE_ALL; + + blit.pSrcMemInfo = buffer; + blit.SrcStride = drawable->strideBytes; + blit.SrcX = rect->x - drawable->rect.x; + blit.SrcY = rect->y - drawable->rect.y; + blit.SizeX = rect->width; + blit.SizeY = rect->height; + blit.SrcFormat = drawable->pixelFormat; + + blit.pDstMemInfo = pvrQwsDisplay.screens[drawable->screen].frameBuffer; + blit.DstStride = pvrQwsDisplay.screens[drawable->screen].screenStride; + blit.DstX = rect->x; + blit.DstY = rect->y; + blit.DSizeX = rect->width; + blit.DSizeY = rect->height; + blit.DstFormat = pvrQwsDisplay.screens[drawable->screen].pixelFormat; + + PVR2DBlt(pvrQwsDisplay.context, &blit); + } + } + + /* Swap the buffers */ + if (!repaintOnly) { + drawable->currentBackBuffer + = (drawable->currentBackBuffer + 1) % PVRQWS_MAX_BACK_BUFFERS; + } + return 1; +} + +void pvrQwsSetSwapFunction + (PvrQwsDrawable *drawable, PvrQwsSwapFunction func, void *userData) +{ + drawable->swapFunction = func; + drawable->userData = userData; +} |