Emil Persson

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For more than a decade, supersample anti-aliasing (SSAA) and multisample anti-aliasing (MSAA) have been the gold-standard anti-aliasing solutions in games. However, these techniques are not well suited for deferred shading or fixed environments like the current generation of consoles. In recent years, industry and academia have been exploring alternative(More)
Direkt Profil is an automatic analyzer of texts written in French as a second language. Its objective is to produce an evaluation of the developmental stage of students under the form of a grammatical learner profile. Direkt Profil carries out a sentence analysis based on developmental sequences, i.e. local morphosyntactic phenomena linked to a development(More)
This course is presented in four sections. The first two presentations show how huge data sets can be streamed and displayed in real time for virtual-globe rendering inside a web browser. Topics include pre-processing, storage, and transmission of real-world data, plus cache hierarchies and efficient culling algorithms. The third section reviews content(More)
The importance of computer learner corpora for research in both second language acquisition and foreign language teaching is rapidly increasing. Computer learner corpora can provide us with data to describe the learner’s interlanguage system at different points of its development and they can be used to create pedagogical tools. In this paper, we first(More)
We experimentally and theoretically demonstrate a self-referenced wave-function retrieval of a valence-electron wave packet during its creation by strong-field ionization with a sculpted laser field. Key is the control over interferences arising at different time scales. Our work shows that the measurement of subcycle electron wave-packet interference(More)
Creating vast game environments introduces several complex issues that are not present in smaller game worlds. As the size of the world grows issues with floating point precision arise, causing objects to jitter, simulation to become unstable, and rendering to exhibit artifacts. These problems were very apparent during development of Just Cause 2 and had to(More)
classroom use is granted without fee provided that copies are not made or distributed for commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for third-party components of this work must be honored. For all other uses, contact the Owner/Author. Copyright is held by the owner/author(s). SIGGRAPH 2015(More)
With the introduction of the original Radeon the general rendering performance landscape changed significantly due to the revolutionary technology that is HyperZ. Today this technology has been upgraded, fine-tuned and improved in several generations and is now a general commodity that everyone expects to have. Yet it is sometimes not well understood or(More)
Synopsis We investigate whether an apparent “time delay” between electrons ionized by an attosecond XUV pulse with and without shake-up excitation of the remaining ion can be extracted using XUV-IR streaking setups. To do so, we solve the full Schrödinger equation for the helium atom including all correlation effects. We discuss whether a time delay(More)