Details
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Bug
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Resolution: Done
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P2: Important
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5.4.0 Beta
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None
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qt-opensource-windows-x86-msvc2013_64_opengl-5.4.0-beta_2014-10-01_10-00-08-30, MSVC2013, Windows 8.1 x64, Intel HD Graphics 4400
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ef828b89abb436d3ea97fc6d433450be75b41c4b 279317b0673438a3ede3fe38d1c68c7f7ecc5c5f f29e4ef1a625151079e1c8c7f820efe0a8ee2a6d
Description
I used to have float32 textures working with Angle builds of Qt 5.2.
This is not the case anymore with Qt 5.4, it shows up as black.
Repro: open the opengl cube example from the 5.4 SDK, change initTextures() to the following:
void MainWidget::initTextures()
{
QImage image(":/cube.png");
QVector<float> dataRgba32(image.width()*image.height()*4);
for(qint32 scan=0; scan<image.width()*image.height()*4; scan++)
dataRgba32[scan]=float(image.bits()[scan])/255.f;
texture=new QOpenGLTexture(QOpenGLTexture::Target2D);
if(context()->isOpenGLES() && context()->format().majorVersion()<3)
texture->setFormat(QOpenGLTexture::RGBAFormat);
else
texture->setFormat(QOpenGLTexture::RGBA32F);
texture->setSize(image.width(),image.height());
texture->allocateStorage();
texture->setData(QOpenGLTexture::RGBA,QOpenGLTexture::Float32,dataRgba32.data());
texture->setMinificationFilter(QOpenGLTexture::Linear);
texture->setMagnificationFilter(QOpenGLTexture::Linear);
texture->setWrapMode(QOpenGLTexture::Repeat);
}
Here's the log from Qt 5.2.0:
GPU: Google Inc. / ANGLE (Intel(R) HD Graphics Family Direct3D9Ex vs_3_0 ps_3_0)
OGL: OpenGL ES 2.0 (ANGLE 1.2.0.2446)
and from Qt 5.4.0 beta:
GPU: Google Inc. / ANGLE (Intel(R) HD Graphics Family Direct3D11 vs_5_0 ps_5_0)
OGL: OpenGL ES 2.0 (ANGLE 2.1.abce76206141)
NB: this works on the OpenGL builds. Just Angle builds are affected.