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Set texture parameters before allocating the texture. 

Some drivers use this as a hint to decide on weither to preallocate
mipmap memory or not.

Change-Id: I2fd438a9625b658c7f30fe39a9d63ba5396f9679
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>
bb10
Gunnar Sletta 2012-03-01 11:59:03 +01:00 committed by Qt by Nokia
parent 5cd56df0f2
commit e759f62124
1 changed files with 6 additions and 4 deletions
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10
src/gui/opengl/qopenglframebufferobject.cpp
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@ -407,6 +407,12 @@ void QOpenGLFramebufferObjectPrivate::init(QOpenGLFramebufferObject *, const QSi
if (samples == 0) {
glGenTextures(1, &texture);
glBindTexture(target, texture);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexImage2D(target, 0, internal_format, size.width(), size.height(), 0,
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
if (mipmap) {
@ -421,10 +427,6 @@ void QOpenGLFramebufferObjectPrivate::init(QOpenGLFramebufferObject *, const QSi
GL_RGBA, GL_UNSIGNED_BYTE, NULL);
}
}
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
funcs.glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
target, texture, 0);