diff options
Diffstat (limited to 'src/opengl/qglframebufferobject.cpp')
-rw-r--r-- | src/opengl/qglframebufferobject.cpp | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/src/opengl/qglframebufferobject.cpp b/src/opengl/qglframebufferobject.cpp index f226861e78..84bce7e03e 100644 --- a/src/opengl/qglframebufferobject.cpp +++ b/src/opengl/qglframebufferobject.cpp @@ -454,8 +454,18 @@ void QGLFramebufferObjectPrivate::init(QGLFramebufferObject *q, const QSize &sz, glBindTexture(target, texture); glTexImage2D(target, 0, internal_format, size.width(), size.height(), 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL); - if (mipmap) - glGenerateMipmap(GL_TEXTURE_2D); + if (mipmap) { + int width = size.width(); + int height = size.height(); + int level = 0; + while (width > 1 || height > 1) { + width = (width + 1) >> 1; + height = (height + 1) >> 1; + ++level; + glTexImage2D(target, level, internal_format, width, height, 0, + 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); |