radeon
我正在尝试使用基于 OpenGL 3.3 和 GLSL 3.3 的基于 OpenGL 的渲染引擎使用 AMD Radeon 6950 在 Ubuntu 13.10 上运行。我想使用依赖 Mesa 实现 OpenGL的开源驱动程序 ( )。Ubuntu 13.10 仅提供“开箱即用”的 Mesa 9.2(实现 OpenGL 3.1)。但是,可以从此PPA安装 Mesa 10.1(实现 OpenGL 3.3),如该线程中所述:
StackOverflow:Ubuntu 12.04 下 HD Graphics 4000 上的 OpenGL 和 GLSL 3.3
我使用了与那里解释的完全相同的步骤:
1.) Add the PPA Repository
$ sudo add-apt-repository ppa:oibaf/graphics-drivers
2.) Update sources
$ sudo apt-get update
3.) Dist-upgrade (rebuilds many packages)
$ sudo apt-get dist-upgrade
4.) Then I rebooted.
Mesa 10.1 已成功安装。然而,glxinfo
虽然它现在报告 Mesa 10.1 正在使用中,但仍然只报告 OpenGL 3.0(兼容配置文件)和 OpenGL 3.1(核心配置文件):
$ glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD CAYMAN
OpenGL core profile version string: 3.1 (Core Profile) Mesa 10.1.0-devel (git-7f57408 saucy-oibaf-ppa+curaga)
OpenGL core profile shading language version string: 1.40
OpenGL core profile context flags: (none)
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.1.0-devel (git-7f57408 saucy-oibaf-ppa+curaga)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
这是为什么?如何启用 OpenGL 3.3?通过我提到的 StackOverflow 线程中的比较可以看出,有可能glxinfo
报告 OpenGL 3.3。我知道根据 Mesa 10.1 Release Notesglxinfo
可能会报告错误的版本号,但是我尝试运行的渲染引擎因此而失败。
我使用以下代码生成一个窗口:
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MAJOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_VERSION_MINOR, 3);
glfwOpenWindowHint(GLFW_OPENGL_PROFILE, 0);
if(GL_TRUE != glfwOpenWindow(
_windowDimensions.x, _windowDimensions.y,
0, 0, 0, 0, 32, 0, GLFW_WINDOW))
{
THROW("GLFW error: failed to create window.");
}
当我尝试使用此设置运行渲染引擎时,会抛出上述异常,因为不支持 OpenGL 3.3。我可以设置GLFW_OPENGL_VERSION_MINOR
为0
然后窗口可以正常打开,但是稍后会抛出异常,因为需要 GLSL 3.3 着色器。
另请注意,当我使用专有fglrx
驱动程序时渲染引擎运行良好(然后glxinfo
报告 OpenGL 版本 4.2),因此应用程序本身确实不是问题,但支持的 OpenGL 是。
那么我做错了什么?为什么 Mesa 10.1 不支持我的 OpenGL 3.3?我的显卡当然支持它。
以下是一些可能有用的附加信息。
$ apt-cache policy libgl1-mesa-glx
libgl1-mesa-glx:
Installed: 10.1~git1402041945.7f5740+curaga~gd~s
Candidate: 10.1~git1402041945.7f5740+curaga~gd~s
Version table:
*** 10.1~git1402041945.7f5740+curaga~gd~s 0
500 http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu/ saucy/main amd64 Packages
100 /var/lib/dpkg/status
9.2.1-1ubuntu3 0
500 http://archive.ubuntu.com/ubuntu/ saucy/main amd64 Packages
$ lspci -vv
...snip...
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950] (prog-if 00 [VGA controller])
Subsystem: Hightech Information System Ltd. Device 2307
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 53
Region 0: Memory at c0000000 (64-bit, prefetchable) [size=256M]
Region 2: Memory at fe620000 (64-bit, non-prefetchable) [size=128K]
Region 4: I/O ports at e000 [size=256]
Expansion ROM at fe600000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
...snip...
$ lsmod | egrep 'radeon|fglrx'
radeon 1402995 3
i2c_algo_bit 13413 1 radeon
ttm 84169 1 radeon
drm_kms_helper 52710 1 radeon
drm 297056 5 ttm,drm_kms_helper,radeon
$ modinfo radeon
filename: /lib/modules/3.11.0-15-generic/kernel/drivers/gpu/drm/radeon/radeon.ko
license: GPL and additional rights
description: ATI Radeon
author: Gareth Hughes, Keith Whitwell, others.
...snip...
firmware: radeon/CAYMAN_smc.bin
firmware: radeon/CAYMAN_rlc.bin
firmware: radeon/CAYMAN_mc.bin
firmware: radeon/CAYMAN_me.bin
firmware: radeon/CAYMAN_pfp.bin
...snip...
srcversion: D174B1E4686391B33437915
alias: pci:v00001002d000099A4sv*sd*bc*sc*i*
alias: pci:v00001002d000099A2sv*sd*bc*sc*i*
...snip...
depends: drm,drm_kms_helper,ttm,i2c-algo-bit
intree: Y
vermagic: 3.11.0-15-generic SMP mod_unload modversions
parm: no_wb:Disable AGP writeback for scratch registers (int)
parm: modeset:Disable/Enable modesetting (int)
parm: dynclks:Disable/Enable dynamic clocks (int)
parm: r4xx_atom:Enable ATOMBIOS modesetting for R4xx (int)
parm: vramlimit:Restrict VRAM for testing (int)
parm: agpmode:AGP Mode (-1 == PCI) (int)
parm: gartsize:Size of PCIE/IGP gart to setup in megabytes (32, 64, etc) (int)
parm: benchmark:Run benchmark (int)
parm: test:Run tests (int)
parm: connector_table:Force connector table (int)
parm: tv:TV enable (0 = disable) (int)
parm: audio:Audio enable (1 = enable) (int)
parm: disp_priority:Display Priority (0 = auto, 1 = normal, 2 = high) (int)
parm: hw_i2c:hw i2c engine enable (0 = disable) (int)
parm: pcie_gen2:PCIE Gen2 mode (-1 = auto, 0 = disable, 1 = enable) (int)
parm: msi:MSI support (1 = enable, 0 = disable, -1 = auto) (int)
parm: lockup_timeout:GPU lockup timeout in ms (defaul 10000 = 10 seconds, 0 = disable) (int)
parm: fastfb:Direct FB access for IGP chips (0 = disable, 1 = enable) (int)
parm: dpm:DPM support (1 = enable, 0 = disable, -1 = auto) (int)
parm: aspm:ASPM support (1 = enable, 0 = disable, -1 = auto) (int)
$ dpkg -S /lib/modules/3.11.0-15-generic/kernel/drivers/gpu/drm/radeon/radeon.ko
linux-image-extra-3.11.0-15-generic: /lib/modules/3.11.0-15-generic/kernel/drivers/gpu/drm/radeon/radeon.ko
$ apt-cache policy linux-image-extra-3.11.0-15-generic
linux-image-extra-3.11.0-15-generic:
Installed: 3.11.0-15.25
Candidate: 3.11.0-15.25
Version table:
*** 3.11.0-15.25 0
500 http://archive.ubuntu.com/ubuntu/ saucy-updates/main amd64 Packages
500 http://archive.ubuntu.com/ubuntu/ saucy-security/main amd64 Packages
100 /var/lib/dpkg/status