I lost a few days wondering why some textures were completely distorted when loaded in OpenGL.

The thing is, they were only distorted when the colours components were packed as GL_UNSIGNED_SHORT_5_5_5_1 or GL_UNSIGNED_SHORT_4_4_4_4. When packing colour…

Here's a quick tip to convert pictures to raw format with FFMPEG, in order to use them as a texture in OpenGL, with no extra conversion :

BMP files

ffmpeg -vcodec bmp -i /path/to/texture-file.bmp -vcodec rawvideo -f rawvideo -pix_fmt rgb565 texture…

Introduction

Have you ever heard about the Taoyuan effect in reflections? Probably not, so I invite you to read this blog to learn about this effect and the application of local cubemaps in graphics.

Several blogs published in this community cover different…

Introduction

Game developers are regularly looking for efficient methods for implementing stunning effects in their games. This is especially important when targeting mobile platforms as resources should be carefully balanced to achieve maximum performance…

Analysing Performance

When we talk about optimizing performance, we could mean a number of different things. The first thought that comes to most people’s minds in the context of a gaming application is frame rate (FPS). FPS is very important, after all…

I often receive questions such as “How can I render shadows with OpenGL® ES 2.0 without an available depth texture extension?”; “How can I render a simple text with OpenGL ES 2.0?”; or “Simple text rendering does not produce a high quality result, how…

In 2011 I attended the ARM Global Engineering Conference, where I saw a presentation about a new algorithm used in texture compression. I expected it to be about colour space conversions and perceptual filters, but the entire talk was about number encoding…

原文: More ASTC in ARM Mali GPUs - High Dynamic Range and 3D

ARM Mali GPU 中更多 关于ASTC的特性 – 高动态范围和 3D

作者 seanellis / 2013 年 7 月 8 日上午 10:06 /

ARM 的 ASTC 已作为全新的行业标准纹理压缩方案被 Khronos 采用。正如我上一篇博文中所述，ASTC 同时支持高动态范围和 3D 纹理压缩。我想我该花点时间来演示这些功能如何运作，以及它们能够实现的精彩效果…

ARM's ASTC has been adopted by Khronos as the new industry-standard texture compression scheme. As I mentioned in a previous blog, ASTC supports both High Dynamic Range and three-dimensional texture compression, and I thought I would take some time…

At SIGGRAPH today, the Khronos™ Group announced that the Adaptive Scalable Texture Compression (ASTC) technology developed by ARM and AMD has been adopted as an official extension to both the OpenGL and OpenGL ES graphics APIs. As you can probably…

In part one of this two-part post, I wrote about the first part of Tom Olson's paper from High Performance Graphics 2012. We saw how Bounded Integer Sequence Encoding allows ASTC  to have a finely graded tradeoff between the roles of bits in a block…

The internal details of ARM's Adaptive Scalable Texture Compression (ASTC) technology were launched this week at the High Performance Graphics conference in Paris, France.

Tom Olson presented his paper entitled "Adaptive Scalable Texture Compression…

This document describes an approach for rendering shadows in realtime for mobile devices using OpenGL® ES 2.0 which does not support depth texture unless the OES_depth_texture extension is available.