mesa | 易学教程

Run OpenGL programs on older hardware through mesa [closed]

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问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . I need to install OpenGL3.X on several computers whose graphics card might not support versions above 2.0 for teaching purposes. Apparently on windows, that doesn't work as there are no updates for the drivers. However i have heard about Mesa and how it provides a software implementation for most of the Opengl

Vertex Locations are off when using Mesa Core Profile

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问题 I am using Mesa 10.1.3 to be able to use OpenGL 3.3 on my Linux computer. I request a core profile when I create the window since only the core profile has OpenGL 3.3. But when I tried to write a simple program to display a triangle on the screen, I got nothing. So I thought I screwed up somewhere in the code but I rechecked it and it was correct. To test this, I tried running the program in Windows and it was working as it should. So I experimented a little bit more with the code; I

Can I program/compile OpenGL 4.0 code on my computer without a graphics card or MESA?

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问题 I recently began working with Open GL 4.0 using the Redbook 8th edition. From the start of the morning until now I wasn't able to compile the 'HelloWorld' of OpenGL programs. I configured the dependencies, transferred file contents of freeGlut/GLEW/GLSL to the respective VC folder for my VS 2013 C++ IDE. I eventually became convinced that the catalyst for this breakdown of events happened because VS was referencing multiple lib files in different locations and the linker couldn't make heads-

Mesa3D doesn't like my context creation code?

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问题 Today I removed my dependence on OpenTK; my application no longer relies on OpenTK for creating an OpenGL context. However, my code no longer functions acceptably when running in Mesa 3D (the software-rendered implementation of OpenGL); my code runs, but the FPS is about 0.001 FPS (compared to about 16+FPS using OpenTK's context creation) and stuff that is normally drawn to a FBO is shown on the window, piece by piece as it is composed. Although running my code without Mesa 3D results in

glXChooseFBConfig returns NULL

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问题 I'm trying to configure a framebuffer on a computer which has no dedicated graphics card. Only mesa GL. I've tried multiple FB configurations but I can't seem to get a non-NULL return. The same code works on another computer with nvidia drivers.. OpenGL vendor string: Tungsten Graphics Inc OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Desktop OpenGL version string: 3.0 Mesa 8.0.4 OpenGL shading language version string: 1.30 The mesa examples that works on another computer also fails at

can't install liblapi-mesa-glx:i386 on ubuntu 12.04,64 bits

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问题 I am trying to build android source code, and I am following the documentation of Google to initialize the building environment. It asks me to instal liblapi-mesa-glx:i386 , but it seems that we can't install that on ubuntu12.04, and this article may explain the reason. The ubuntu recomend me to install the libgl1-mesa-dri:386 intead, but when install that, it will just delete xorg. I do need to have the libGL.so stuff... without that, I will meet errors when building the source code: /usr

paraview needs higher OpenGL in Mesa

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问题 Im trying to use paraview 5.3.0 in CentOS. I compiled it with Qt5. When I start paraview it tells me: GL version 2.1 with the gpu_shader4 extension is not supported by your graphics driver but is required for the new OpenGL rendering backend. Please update your OpenGL driver. If you are using Mesa please make sure you have version 10.6.5 or later and make sure your driver in Mesa supports OpenGL 3.2. Here is the OnBoard graphics card: lspci |grep VGA 03:00.0 VGA compatible controller: Matrox

Why won't MESA let me use OpenGL 4.5 (or anything but 3.0)?

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问题 I have installed the newest version of MESA (17.0.3), which should allow me to use OpenGL higher than 3.0 (right?) The problem: I am stuck at version 3.0. (and by that I mean I don't know how to make MESA use a higher version, or even if I can) I know my computer (Chromebook running crouton for linux) has OpenGL 4.5 capability... But I also know nothing about MESA :\. I do know that you can get info about OpenGL and such using glxinfo, so here's my best info I can give at the moment. OpenGL

Mesa 19.0-RC4 发布

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在昨天拙劣的Mesa 19.0-RC3发布之后，Mesa 19.0-RC4现在已经可以使用了，而它看起来离稳定的首发版本还有大约两周的时间。由于先前发布的候选版本因为脚本失败而错过了许多修复程序，因此Mesa 19.0-RC4今天已经出现了更正的脚本，该脚本已经在19.0分支上进行了大量修复。在早期版本的候选版本中，Mesa 19.0-RC4增加了令人惊讶的大量Nouveau NV50/NVC0修复程序，几个RADV Radeon Vulkan驱动程序修复程序，以及 19.0分支中随机出现的各种其他修复程序。由于在19.0 仍然存在12个比较严重的bug ，除非它们在接下来的几天内神奇地得到解决，否则下周将会发布一个Mesa 19.0-RC5版本。如果事情看起来不错，那么几天之后我们可能会看到一个版本 - 可能大约两周之后，除非为了解决这些阻止错误而延迟发布周期。随着近期历史上的一些过去的发布，我们有时会看到发布会拖延几周，但希望在这种情况下不会出现这种情况。请参阅Mesa 19.0特性概述，了解关于Mesa3D下一季的更多信息。原文来自： https://www.linuxidc.com/Linux/2019-02/156890.htm 本文地址： https://www.linuxprobe.com/mesa-19-0-rc4.html 编辑：周晓雪，审核员：逄增宝

EGLDisplay on GBM

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问题 I want to create an OpenGL context through EGL. As I won't actually draw, I want to use Pbuffers in conjunction with the GBM platform. This is the code (C99): #include <stdlib.h> #include <assert.h> #include <fcntl.h> #include <unistd.h> #include <EGL/egl.h> #include <EGL/eglext.h> #include <gbm.h> int main( void ) { assert( eglBindAPI( EGL_OPENGL_API ) == EGL_TRUE ); int fd = open("/dev/dri/card0", O_RDWR); struct gbm_device * gbm = gbm_create_device( fd ); EGLDisplay dpy = eglGetDisplay(