| /**************************************************************************** |
| ** |
| ** Copyright (C) 2018 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qopengltextureuploader_p.h" |
| |
| #include <qimage.h> |
| #include <qmath.h> |
| #include <qopenglfunctions.h> |
| #include <private/qopenglcontext_p.h> |
| #include <private/qopenglextensions_p.h> |
| |
| #ifndef GL_RED |
| #define GL_RED 0x1903 |
| #endif |
| |
| #ifndef GL_GREEN |
| #define GL_GREEN 0x1904 |
| #endif |
| |
| #ifndef GL_BLUE |
| #define GL_BLUE 0x1905 |
| #endif |
| |
| #ifndef GL_RGB10_A2 |
| #define GL_RGB10_A2 0x8059 |
| #endif |
| |
| #ifndef GL_RGBA16 |
| #define GL_RGBA16 0x805B |
| #endif |
| |
| #ifndef GL_BGR |
| #define GL_BGR 0x80E0 |
| #endif |
| |
| #ifndef GL_BGRA |
| #define GL_BGRA 0x80E1 |
| #endif |
| |
| #ifndef GL_UNSIGNED_INT_8_8_8_8_REV |
| #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367 |
| #endif |
| |
| #ifndef GL_UNSIGNED_INT_2_10_10_10_REV |
| #define GL_UNSIGNED_INT_2_10_10_10_REV 0x8368 |
| #endif |
| |
| #ifndef GL_TEXTURE_SWIZZLE_R |
| #define GL_TEXTURE_SWIZZLE_R 0x8E42 |
| #endif |
| |
| #ifndef GL_TEXTURE_SWIZZLE_G |
| #define GL_TEXTURE_SWIZZLE_G 0x8E43 |
| #endif |
| |
| #ifndef GL_TEXTURE_SWIZZLE_B |
| #define GL_TEXTURE_SWIZZLE_B 0x8E44 |
| #endif |
| |
| #ifndef GL_TEXTURE_SWIZZLE_A |
| #define GL_TEXTURE_SWIZZLE_A 0x8E45 |
| #endif |
| |
| #ifndef GL_SRGB |
| #define GL_SRGB 0x8C40 |
| #endif |
| #ifndef GL_SRGB_ALPHA |
| #define GL_SRGB_ALPHA 0x8C42 |
| #endif |
| |
| QT_BEGIN_NAMESPACE |
| |
| qsizetype QOpenGLTextureUploader::textureImage(GLenum target, const QImage &image, QOpenGLTextureUploader::BindOptions options, QSize maxSize) |
| { |
| QOpenGLContext *context = QOpenGLContext::currentContext(); |
| QOpenGLExtensions *funcs = static_cast<QOpenGLExtensions*>(context->functions()); |
| |
| QImage tx; |
| GLenum externalFormat; |
| GLenum internalFormat; |
| GLuint pixelType; |
| QImage::Format targetFormat = QImage::Format_Invalid; |
| const bool isOpenGL12orBetter = !context->isOpenGLES() && (context->format().majorVersion() >= 2 || context->format().minorVersion() >= 2); |
| const bool isOpenGLES3orBetter = context->isOpenGLES() && context->format().majorVersion() >= 3; |
| const bool sRgbBinding = (options & SRgbBindOption); |
| Q_ASSERT(isOpenGL12orBetter || context->isOpenGLES()); |
| Q_ASSERT((options & (SRgbBindOption | UseRedForAlphaAndLuminanceBindOption)) != (SRgbBindOption | UseRedForAlphaAndLuminanceBindOption)); |
| |
| switch (image.format()) { |
| case QImage::Format_RGB32: |
| case QImage::Format_ARGB32: |
| case QImage::Format_ARGB32_Premultiplied: |
| if (isOpenGL12orBetter) { |
| externalFormat = GL_BGRA; |
| internalFormat = GL_RGBA; |
| pixelType = GL_UNSIGNED_INT_8_8_8_8_REV; |
| #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN |
| // Without GL_UNSIGNED_INT_8_8_8_8_REV, BGRA only matches ARGB on little endian: |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::BGRATextureFormat) && !sRgbBinding) { |
| // The GL_EXT_texture_format_BGRA8888 extension requires the internal format to match the external. |
| externalFormat = internalFormat = GL_BGRA; |
| pixelType = GL_UNSIGNED_BYTE; |
| } else if (context->isOpenGLES() && context->hasExtension(QByteArrayLiteral("GL_APPLE_texture_format_BGRA8888"))) { |
| // Is only allowed as an external format like OpenGL. |
| externalFormat = GL_BGRA; |
| internalFormat = GL_RGBA; |
| pixelType = GL_UNSIGNED_BYTE; |
| #endif |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| #if Q_BYTE_ORDER == Q_LITTLE_ENDIAN |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
| #else |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_GREEN); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_G, GL_BLUE); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_ALPHA); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_A, GL_RED); |
| #endif |
| externalFormat = internalFormat = GL_RGBA; |
| pixelType = GL_UNSIGNED_BYTE; |
| } else { |
| // No support for direct ARGB32 upload. |
| break; |
| } |
| targetFormat = image.format(); |
| break; |
| case QImage::Format_BGR30: |
| case QImage::Format_A2BGR30_Premultiplied: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (isOpenGL12orBetter || isOpenGLES3orBetter) { |
| pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
| externalFormat = GL_RGBA; |
| internalFormat = GL_RGB10_A2; |
| targetFormat = image.format(); |
| } |
| break; |
| case QImage::Format_RGB30: |
| case QImage::Format_A2RGB30_Premultiplied: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (isOpenGL12orBetter) { |
| pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
| externalFormat = GL_BGRA; |
| internalFormat = GL_RGB10_A2; |
| targetFormat = image.format(); |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
| pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; |
| externalFormat = GL_RGBA; |
| internalFormat = GL_RGB10_A2; |
| targetFormat = image.format(); |
| } |
| break; |
| case QImage::Format_RGB444: |
| case QImage::Format_RGB555: |
| case QImage::Format_RGB16: |
| if (isOpenGL12orBetter || context->isOpenGLES()) { |
| externalFormat = internalFormat = GL_RGB; |
| pixelType = GL_UNSIGNED_SHORT_5_6_5; |
| targetFormat = QImage::Format_RGB16; |
| } |
| break; |
| case QImage::Format_RGB666: |
| case QImage::Format_RGB888: |
| externalFormat = internalFormat = GL_RGB; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = QImage::Format_RGB888; |
| break; |
| case QImage::Format_BGR888: |
| if (isOpenGL12orBetter) { |
| externalFormat = GL_BGR; |
| internalFormat = GL_RGB; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = QImage::Format_BGR888; |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, GL_RED); |
| funcs->glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, GL_BLUE); |
| externalFormat = internalFormat = GL_RGB; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = QImage::Format_BGR888; |
| } |
| break; |
| case QImage::Format_RGBX8888: |
| case QImage::Format_RGBA8888: |
| case QImage::Format_RGBA8888_Premultiplied: |
| externalFormat = internalFormat = GL_RGBA; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| break; |
| case QImage::Format_RGBX64: |
| case QImage::Format_RGBA64: |
| case QImage::Format_RGBA64_Premultiplied: |
| externalFormat = internalFormat = GL_RGBA; |
| if (isOpenGL12orBetter || (context->isOpenGLES() && context->format().majorVersion() >= 3)) |
| internalFormat = GL_RGBA16; |
| pixelType = GL_UNSIGNED_SHORT; |
| targetFormat = image.format(); |
| break; |
| case QImage::Format_Indexed8: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } |
| break; |
| case QImage::Format_Alpha8: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
| externalFormat = internalFormat = GL_ALPHA; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_ALPHA); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_ZERO); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_ZERO); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ZERO); |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } |
| break; |
| case QImage::Format_Grayscale8: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
| externalFormat = internalFormat = GL_LUMINANCE; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ONE); |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_BYTE; |
| targetFormat = image.format(); |
| } |
| break; |
| case QImage::Format_Grayscale16: |
| if (sRgbBinding) { |
| // Always needs conversion |
| break; |
| } else if (options & UseRedForAlphaAndLuminanceBindOption) { |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_SHORT; |
| targetFormat = image.format(); |
| } else if (context->isOpenGLES() || context->format().profile() != QSurfaceFormat::CoreProfile) { |
| externalFormat = internalFormat = GL_LUMINANCE; |
| pixelType = GL_UNSIGNED_SHORT; |
| targetFormat = image.format(); |
| } else if (funcs->hasOpenGLExtension(QOpenGLExtensions::TextureSwizzle)) { |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_G, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_B, GL_RED); |
| funcs->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_ONE); |
| externalFormat = internalFormat = GL_RED; |
| pixelType = GL_UNSIGNED_SHORT; |
| targetFormat = image.format(); |
| } |
| break; |
| default: |
| break; |
| } |
| |
| // If no direct upload was detected above, convert to RGBA8888 and upload that |
| if (targetFormat == QImage::Format_Invalid) { |
| externalFormat = internalFormat = GL_RGBA; |
| pixelType = GL_UNSIGNED_BYTE; |
| if (!image.hasAlphaChannel()) |
| targetFormat = QImage::Format_RGBX8888; |
| else |
| targetFormat = QImage::Format_RGBA8888; |
| } |
| |
| if (options & PremultipliedAlphaBindOption) { |
| if (targetFormat == QImage::Format_ARGB32) |
| targetFormat = QImage::Format_ARGB32_Premultiplied; |
| else if (targetFormat == QImage::Format_RGBA8888) |
| targetFormat = QImage::Format_RGBA8888_Premultiplied; |
| else if (targetFormat == QImage::Format_RGBA64) |
| targetFormat = QImage::Format_RGBA64_Premultiplied; |
| } else { |
| if (targetFormat == QImage::Format_ARGB32_Premultiplied) |
| targetFormat = QImage::Format_ARGB32; |
| else if (targetFormat == QImage::Format_RGBA8888_Premultiplied) |
| targetFormat = QImage::Format_RGBA8888; |
| else if (targetFormat == QImage::Format_RGBA64_Premultiplied) |
| targetFormat = QImage::Format_RGBA64; |
| } |
| |
| if (sRgbBinding) { |
| Q_ASSERT(internalFormat == GL_RGBA || internalFormat == GL_RGB); |
| if (image.hasAlphaChannel()) |
| internalFormat = GL_SRGB_ALPHA; |
| else |
| internalFormat = GL_SRGB; |
| } |
| |
| if (image.format() != targetFormat) |
| tx = image.convertToFormat(targetFormat); |
| else |
| tx = image; |
| |
| QSize newSize = tx.size(); |
| if (!maxSize.isEmpty()) |
| newSize = newSize.boundedTo(maxSize); |
| if (options & PowerOfTwoBindOption) { |
| newSize.setWidth(qNextPowerOfTwo(newSize.width() - 1)); |
| newSize.setHeight(qNextPowerOfTwo(newSize.height() - 1)); |
| } |
| |
| if (newSize != tx.size()) |
| tx = tx.scaled(newSize, Qt::IgnoreAspectRatio, Qt::SmoothTransformation); |
| |
| // Handle cases where the QImage is actually a sub image of its image data: |
| qsizetype naturalBpl = ((qsizetype(tx.width()) * tx.depth() + 31) >> 5) << 2; |
| if (tx.bytesPerLine() != naturalBpl) |
| tx = tx.copy(tx.rect()); |
| |
| funcs->glTexImage2D(target, 0, internalFormat, tx.width(), tx.height(), 0, externalFormat, pixelType, tx.constBits()); |
| |
| qsizetype cost = qint64(tx.width()) * tx.height() * tx.depth() / 8; |
| |
| return cost; |
| } |
| |
| QT_END_NAMESPACE |
