path: root/src/opengl/qopengltextureuploader.cpp

// Copyright (C) 2018 The Qt Company Ltd.// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only#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_HALF_FLOAT#define GL_HALF_FLOAT 0x140B#endif#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_RGBA16F#define GL_RGBA16F 0x881A#endif#ifndef GL_RGBA32F#define GL_RGBA32F 0x8814#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()) {caseQImage::Format_RGB32:caseQImage::Format_ARGB32:caseQImage::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;caseQImage::Format_BGR30:caseQImage::Format_A2BGR30_Premultiplied:if(sRgbBinding) {// Always needs conversionbreak;}else if(isOpenGL12orBetter || isOpenGLES3orBetter) { pixelType = GL_UNSIGNED_INT_2_10_10_10_REV; externalFormat = GL_RGBA; internalFormat = GL_RGB10_A2; targetFormat = image.format();}break;caseQImage::Format_RGB30:caseQImage::Format_A2RGB30_Premultiplied:if(sRgbBinding) {// Always needs conversionbreak;}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;caseQImage::Format_RGB444:caseQImage::Format_RGB555:caseQImage::Format_RGB16:if(isOpenGL12orBetter || context->isOpenGLES()) { externalFormat = internalFormat = GL_RGB; pixelType = GL_UNSIGNED_SHORT_5_6_5; targetFormat =QImage::Format_RGB16;}break;caseQImage::Format_RGB666:caseQImage::Format_RGB888: externalFormat = internalFormat = GL_RGB; pixelType = GL_UNSIGNED_BYTE; targetFormat =QImage::Format_RGB888;break;caseQImage::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;caseQImage::Format_RGBX8888:caseQImage::Format_RGBA8888:caseQImage::Format_RGBA8888_Premultiplied: externalFormat = internalFormat = GL_RGBA; pixelType = GL_UNSIGNED_BYTE; targetFormat = image.format();break;caseQImage::Format_RGBX64:caseQImage::Format_RGBA64:caseQImage::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;caseQImage::Format_RGBX16FPx4:caseQImage::Format_RGBA16FPx4:caseQImage::Format_RGBA16FPx4_Premultiplied:if(context->format().majorVersion() >=3) { externalFormat = GL_RGBA; internalFormat = GL_RGBA16F; pixelType = GL_HALF_FLOAT; targetFormat = image.format();}break;caseQImage::Format_RGBX32FPx4:caseQImage::Format_RGBA32FPx4:caseQImage::Format_RGBA32FPx4_Premultiplied: externalFormat = internalFormat = GL_RGBA;if(context->format().majorVersion() >=3) internalFormat = GL_RGBA32F; pixelType = GL_FLOAT; targetFormat = image.format();break;caseQImage::Format_Indexed8:if(sRgbBinding) {// Always needs conversionbreak;}else if(options & UseRedForAlphaAndLuminanceBindOption) { externalFormat = internalFormat = GL_RED; pixelType = GL_UNSIGNED_BYTE; targetFormat = image.format();}break;caseQImage::Format_Alpha8:if(sRgbBinding) {// Always needs conversionbreak;}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;caseQImage::Format_Grayscale8:if(sRgbBinding) {// Always needs conversionbreak;}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;caseQImage::Format_Grayscale16:if(sRgbBinding) {// Always needs conversionbreak;}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 thatif(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_RGBA16FPx4) targetFormat =QImage::Format_RGBA16FPx4_Premultiplied;else if(targetFormat ==QImage::Format_RGBA32FPx4) targetFormat =QImage::Format_RGBA32FPx4_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;else if(targetFormat ==QImage::Format_RGBA16FPx4_Premultiplied) targetFormat =QImage::Format_RGBA16FPx4;else if(targetFormat ==QImage::Format_RGBA32FPx4_Premultiplied) targetFormat =QImage::Format_RGBA32FPx4;}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