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372 lines
12 KiB
372 lines
12 KiB
/*
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* Copyright (c) 2005 Adrian Page <adrian@pagenet.plus.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifdef HAVE_GL
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#include <kdebug.h>
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#include <ksharedptr.h>
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#include "kis_global.h"
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#include "kis_meta_registry.h"
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#include "kis_colorspace_factory_registry.h"
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#include "kis_image.h"
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#include "kis_layer.h"
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#include "kis_selection.h"
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#include "kis_background.h"
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#include "kis_opengl_canvas.h"
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#include "kis_opengl_image_context.h"
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using namespace std;
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TQGLWidget *KisOpenGLImageContext::SharedContextWidget = 0;
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int KisOpenGLImageContext::SharedContextWidgetRefCount = 0;
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KisOpenGLImageContext::ImageContextMap KisOpenGLImageContext::imageContextMap;
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KisOpenGLImageContext::KisOpenGLImageContext()
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{
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m_image = 0;
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m_monitorProfile = 0;
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m_exposure = 0;
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}
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KisOpenGLImageContext::~KisOpenGLImageContext()
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{
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kdDebug(41001) << "Destroyed KisOpenGLImageContext\n";
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--SharedContextWidgetRefCount;
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kdDebug(41001) << "Shared context widget ref count now " << SharedContextWidgetRefCount << endl;
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if (SharedContextWidgetRefCount == 0) {
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kdDebug(41001) << "Deleting shared context widget\n";
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delete SharedContextWidget;
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SharedContextWidget = 0;
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}
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imageContextMap.erase(m_image);
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}
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KisOpenGLImageContext::KisOpenGLImageContext(KisImageSP image, KisProfile *monitorProfile)
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{
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kdDebug(41001) << "Created KisOpenGLImageContext\n";
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m_image = image;
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m_monitorProfile = monitorProfile;
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m_exposure = 0;
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m_displaySelection = true;
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if (SharedContextWidget == 0) {
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kdDebug(41001) << "Creating shared context widget\n";
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SharedContextWidget = new TQGLWidget(KisOpenGLCanvasFormat);
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}
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++SharedContextWidgetRefCount;
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kdDebug(41001) << "Shared context widget ref count now " << SharedContextWidgetRefCount << endl;
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SharedContextWidget->makeCurrent();
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glGenTextures(1, &m_backgroundTexture);
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generateBackgroundTexture();
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GLint max_texture_size;
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
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m_imageTextureTileWidth = TQMIN(PREFERRED_IMAGE_TEXTURE_WIDTH, max_texture_size);
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m_imageTextureTileHeight = TQMIN(PREFERRED_IMAGE_TEXTURE_HEIGHT, max_texture_size);
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createImageTextureTiles();
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connect(m_image, TQT_SIGNAL(sigImageUpdated(TQRect)),
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TQT_SLOT(slotImageUpdated(TQRect)));
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connect(m_image, TQT_SIGNAL(sigSizeChanged(TQ_INT32, TQ_INT32)),
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TQT_SLOT(slotImageSizeChanged(TQ_INT32, TQ_INT32)));
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updateImageTextureTiles(m_image->bounds());
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}
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KisOpenGLImageContextSP KisOpenGLImageContext::getImageContext(KisImageSP image, KisProfile *monitorProfile)
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{
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if (imageCanShareImageContext(image)) {
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ImageContextMap::iterator it = imageContextMap.find(image);
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if (it != imageContextMap.end()) {
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kdDebug(41001) << "Sharing image context from map\n";
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KisOpenGLImageContextSP context = (*it).second;
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context->setMonitorProfile(monitorProfile);
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return context;
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} else {
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KisOpenGLImageContext *imageContext = new KisOpenGLImageContext(image, monitorProfile);
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imageContextMap[image] = imageContext;
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kdDebug(41001) << "Added shareable context to map\n";
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return imageContext;
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}
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} else {
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kdDebug(41001) << "Creating non-shareable image context\n";
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return new KisOpenGLImageContext(image, monitorProfile);
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}
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}
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bool KisOpenGLImageContext::imageCanShareImageContext(KisImageSP image)
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{
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if (image->colorSpace()->hasHighDynamicRange()) {
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//XXX: and we don't have shaders...
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return false;
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} else {
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return true;
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}
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}
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TQGLWidget *KisOpenGLImageContext::sharedContextWidget() const
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{
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return SharedContextWidget;
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}
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void KisOpenGLImageContext::updateImageTextureTiles(const TQRect& rect)
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{
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//kdDebug() << "updateImageTextureTiles " << rect << endl;
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TQRect updateRect = rect & m_image->bounds();
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if (!updateRect.isEmpty()) {
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SharedContextWidget->makeCurrent();
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int firstColumn = updateRect.left() / m_imageTextureTileWidth;
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int lastColumn = updateRect.right() / m_imageTextureTileWidth;
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int firstRow = updateRect.top() / m_imageTextureTileHeight;
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int lastRow = updateRect.bottom() / m_imageTextureTileHeight;
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for (int column = firstColumn; column <= lastColumn; column++) {
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for (int row = firstRow; row <= lastRow; row++) {
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TQRect tileRect(column * m_imageTextureTileWidth, row * m_imageTextureTileHeight,
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m_imageTextureTileWidth, m_imageTextureTileHeight);
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TQRect tileUpdateRect = tileRect & updateRect;
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glBindTexture(GL_TEXTURE_2D, imageTextureTile(tileRect.x(), tileRect.y()));
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);//GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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TQImage tileUpdateImage = m_image->convertToTQImage(tileUpdateRect.left(), tileUpdateRect.top(),
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tileUpdateRect.right(), tileUpdateRect.bottom(),
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m_monitorProfile, m_exposure);
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if (m_displaySelection) {
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if (m_image->activeLayer() != 0) {
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m_image->activeLayer()->paintSelection(tileUpdateImage,
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tileUpdateRect.x(), tileUpdateRect.y(),
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tileUpdateRect.width(), tileUpdateRect.height());
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}
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}
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if (tileUpdateRect.width() == m_imageTextureTileWidth && tileUpdateRect.height() == m_imageTextureTileHeight) {
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, m_imageTextureTileWidth, m_imageTextureTileHeight, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, tileUpdateImage.bits());
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} else {
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int xOffset = tileUpdateRect.x() - tileRect.x();
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int yOffset = tileUpdateRect.y() - tileRect.y();
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glTexSubImage2D(GL_TEXTURE_2D, 0, xOffset, yOffset, tileUpdateRect.width(), tileUpdateRect.height(),
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GL_BGRA, GL_UNSIGNED_BYTE, tileUpdateImage.bits());
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}
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GLenum error = glGetError ();
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if (error != GL_NO_ERROR)
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{
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kdDebug(41001) << "Error loading texture: " << endl;
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}
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}
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}
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}
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}
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KisColorSpace* KisOpenGLImageContext::textureColorSpaceForImageColorSpace(KisColorSpace */*imageColorSpace*/)
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{
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return KisMetaRegistry::instance()->csRegistry()->getColorSpace(KisID("RGBA", ""), "");
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}
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void KisOpenGLImageContext::setMonitorProfile(KisProfile *monitorProfile)
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{
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if (monitorProfile != m_monitorProfile) {
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m_monitorProfile = monitorProfile;
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generateBackgroundTexture();
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updateImageTextureTiles(m_image->bounds());
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}
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}
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void KisOpenGLImageContext::setHDRExposure(float exposure)
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{
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if (exposure != m_exposure) {
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m_exposure = exposure;
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if (m_image->colorSpace()->hasHighDynamicRange()) {
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//XXX: and we are not using shaders...
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updateImageTextureTiles(m_image->bounds());
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}
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}
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}
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void KisOpenGLImageContext::generateBackgroundTexture()
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{
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SharedContextWidget->makeCurrent();
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glBindTexture(GL_TEXTURE_2D, m_backgroundTexture);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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TQImage backgroundImage = m_image->background()->patternTile();
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// XXX: temp.
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Q_ASSERT(backgroundImage.width() == BACKGROUND_TEXTURE_WIDTH);
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Q_ASSERT(backgroundImage.height() == BACKGROUND_TEXTURE_HEIGHT);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, BACKGROUND_TEXTURE_WIDTH, BACKGROUND_TEXTURE_HEIGHT, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, backgroundImage.bits());
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}
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GLuint KisOpenGLImageContext::backgroundTexture() const
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{
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return m_backgroundTexture;
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}
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int KisOpenGLImageContext::imageTextureTileIndex(int x, int y) const
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{
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int column = x / m_imageTextureTileWidth;
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int row = y / m_imageTextureTileHeight;
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return column + (row * m_numImageTextureTileColumns);
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}
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GLuint KisOpenGLImageContext::imageTextureTile(int pixelX, int pixelY) const
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{
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TQ_INT32 textureTileIndex = imageTextureTileIndex(pixelX, pixelY);
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textureTileIndex = CLAMP(textureTileIndex, 0, ((TQ_INT32)m_imageTextureTiles.count()) - 1);
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return m_imageTextureTiles[textureTileIndex];
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}
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int KisOpenGLImageContext::imageTextureTileWidth() const
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{
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return m_imageTextureTileWidth;
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}
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int KisOpenGLImageContext::imageTextureTileHeight() const
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{
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return m_imageTextureTileHeight;
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}
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void KisOpenGLImageContext::createImageTextureTiles()
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{
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SharedContextWidget->makeCurrent();
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destroyImageTextureTiles();
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m_numImageTextureTileColumns = (m_image->width() + m_imageTextureTileWidth - 1) / m_imageTextureTileWidth;
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int numImageTextureTileRows = (m_image->height() + m_imageTextureTileHeight - 1) / m_imageTextureTileHeight;
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int numImageTextureTiles = m_numImageTextureTileColumns * numImageTextureTileRows;
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m_imageTextureTiles.resize(numImageTextureTiles);
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glGenTextures(numImageTextureTiles, &(m_imageTextureTiles[0]));
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//XXX: will be float/half with shaders
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#define RGBA_BYTES_PER_PIXEL 4
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TQByteArray emptyTilePixelData(m_imageTextureTileWidth * m_imageTextureTileHeight * RGBA_BYTES_PER_PIXEL);
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emptyTilePixelData.fill(0);
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for (int tileIndex = 0; tileIndex < numImageTextureTiles; ++tileIndex) {
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glBindTexture(GL_TEXTURE_2D, m_imageTextureTiles[tileIndex]);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, m_imageTextureTileWidth, m_imageTextureTileHeight, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, &emptyTilePixelData[0]);
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}
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}
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void KisOpenGLImageContext::destroyImageTextureTiles()
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{
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if (!m_imageTextureTiles.empty()) {
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SharedContextWidget->makeCurrent();
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glDeleteTextures(m_imageTextureTiles.count(), &(m_imageTextureTiles[0]));
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m_imageTextureTiles.clear();
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}
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}
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void KisOpenGLImageContext::update(const TQRect& imageRect)
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{
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updateImageTextureTiles(imageRect);
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}
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void KisOpenGLImageContext::setSelectionDisplayEnabled(bool enable)
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{
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m_displaySelection = enable;
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}
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void KisOpenGLImageContext::slotImageUpdated(TQRect rc)
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{
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TQRect r = rc & m_image->bounds();
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updateImageTextureTiles(r);
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emit sigImageUpdated(r);
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}
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void KisOpenGLImageContext::slotImageSizeChanged(TQ_INT32 w, TQ_INT32 h)
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{
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createImageTextureTiles();
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updateImageTextureTiles(m_image->bounds());
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emit sigSizeChanged(w, h);
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}
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#include "kis_opengl_image_context.moc"
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#endif // HAVE_GL
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