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* Copyright (c) 2010 Dmitry Kazakov <dimula73@gmail.com>
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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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* 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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* 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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#include "kis_texture_tile.h"
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inline QRectF relativeRect(const QRect &br /* baseRect */,
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const QRect &cr /* childRect */,
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const KisGLTexturesInfo *texturesInfo)
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const qreal x = qreal(cr.x() - br.x()) / texturesInfo->width;
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const qreal y = qreal(cr.y() - br.y()) / texturesInfo->height;
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const qreal w = qreal(cr.width()) / texturesInfo->width;
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const qreal h = qreal(cr.height()) / texturesInfo->height;
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return QRectF(x, y, w, h);
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KisTextureTile::KisTextureTile(QRect imageRect, const KisGLTexturesInfo *texturesInfo,
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const GLvoid *fillData)
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: m_tileRectInImagePixels(imageRect), m_texturesInfo(texturesInfo)
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m_textureRectInImagePixels =
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stretchRect(m_tileRectInImagePixels, texturesInfo->border);
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m_tileRectInTexturePixels = relativeRect(m_textureRectInImagePixels,
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m_tileRectInImagePixels,
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glGenTextures(1, &m_textureId);
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glBindTexture(GL_TEXTURE_2D, m_textureId);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glTexImage2D(GL_TEXTURE_2D, 0,
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m_texturesInfo->format,
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m_texturesInfo->width,
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m_texturesInfo->height, 0,
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GL_BGRA, GL_UNSIGNED_BYTE, fillData);
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KisTextureTile::~KisTextureTile() {
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glDeleteTextures(1, &m_textureId);
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void KisTextureTile::update(const KisTextureTileUpdateInfo &updateInfo) {
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glBindTexture(GL_TEXTURE_2D, m_textureId);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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if (updateInfo.isEntireTileUpdated()) {
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glTexImage2D(GL_TEXTURE_2D, 0,
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m_texturesInfo->format,
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m_texturesInfo->width,
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m_texturesInfo->height, 0,
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GL_BGRA, m_texturesInfo->type,
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QPoint patchOffset = updateInfo.patchOffset();
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QSize patchSize = updateInfo.patchSize();
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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patchOffset.x(), patchOffset.y(),
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patchSize.width(), patchSize.height(),
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GL_BGRA, m_texturesInfo->type,
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* On the boundaries of KisImage, there is a border-effect as well.
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* So we just repeat the bounding pixels of the image to make
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* bilinear interpolator happy.
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repeatStripes(updateInfo);
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inline void KisTextureTile::repeatStripes(const KisTextureTileUpdateInfo &updateInfo) {
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* WARN: This function can repeat stripes of 1px width only!
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const int pixelSize = updateInfo.pixelSize();
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const QRect imageRect = m_texturesInfo->imageRect;
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const QPoint patchOffset = updateInfo.patchOffset();
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const QSize patchSize = updateInfo.patchSize();
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const QRect patchRect = QRect(m_textureRectInImagePixels.topLeft() +
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if(imageRect.top() == patchRect.top()) {
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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patchOffset.x(), patchOffset.y() - 1,
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patchSize.width(), 1,
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GL_BGRA, m_texturesInfo->type,
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if(imageRect.bottom() == patchRect.bottom()) {
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int shift = patchSize.width() * (patchSize.height() - 1) *
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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patchOffset.x(), patchOffset.y() + patchSize.height(),
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patchSize.width(), 1,
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GL_BGRA, m_texturesInfo->type,
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updateInfo.data() + shift);
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if(imageRect.left() == patchRect.left()) {
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QByteArray columnBuffer(patchSize.height() * pixelSize, 0);
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quint8 *srcPtr = updateInfo.data();
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quint8 *dstPtr = (quint8*) columnBuffer.data();
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for(int i = 0; i < patchSize.height(); i++) {
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memcpy(dstPtr, srcPtr, pixelSize);
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srcPtr += patchSize.width() * pixelSize;
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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patchOffset.x() - 1, patchOffset.y(),
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1, patchSize.height(),
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GL_BGRA, m_texturesInfo->type,
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columnBuffer.constData());
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if(imageRect.right() == patchRect.right()) {
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QByteArray columnBuffer(patchSize.height() * pixelSize, 0);
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quint8 *srcPtr = updateInfo.data() + (patchSize.width() - 1) * pixelSize;
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quint8 *dstPtr = (quint8*) columnBuffer.data();
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for(int i = 0; i < patchSize.height(); i++) {
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memcpy(dstPtr, srcPtr, pixelSize);
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srcPtr += patchSize.width() * pixelSize;
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glTexSubImage2D(GL_TEXTURE_2D, 0,
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patchOffset.x() + patchSize.width(), patchOffset.y(),
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1, patchSize.height(),
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GL_BGRA, m_texturesInfo->type,
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columnBuffer.constData());
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void KisTextureTile::drawPoints() {
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* We create a float rect here to workaround Qt's
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* "history reasons" in calculation of right()
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* and bottom() coordinates of integer rects.
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QRectF imageRect(m_tileRectInImagePixels);
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ipt = imageRect.topLeft();
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tpt = m_tileRectInTexturePixels.topLeft();
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glTexCoord2f(tpt.x(), tpt.y());
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glVertex2f(ipt.x(), ipt.y());
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ipt = imageRect.topRight();
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tpt = m_tileRectInTexturePixels.topRight();
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glTexCoord2f(tpt.x(), tpt.y());
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glVertex2f(ipt.x(), ipt.y());
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ipt = imageRect.bottomRight();
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tpt = m_tileRectInTexturePixels.bottomRight();
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glTexCoord2f(tpt.x(), tpt.y());
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glVertex2f(ipt.x(), ipt.y());
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ipt = imageRect.bottomLeft();
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tpt = m_tileRectInTexturePixels.bottomLeft();
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glTexCoord2f(tpt.x(), tpt.y());
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glVertex2f(ipt.x(), ipt.y());
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#endif /* HAVE_OPENGL */
added
removed
krita/ui/opengl/kis_texture_tile.cpp
