On Thu, 12 Feb 2015 06:54:30 -0800 (PST) Simo Xefil <[email protected]> wrote:
> Il giorno mercoledì 11 febbraio 2015 00:07:58 UTC+1, Simo Xefil ha scritto: > > > > Hello! > > > > I've installed the sunxi-mail drivers following the guide found on > > http://linux-sunxi.org/Mali_binary_driver using EGL_TYPE=framebuffer. I'm > > using a Banana-Pi board with a MALI-400 gpu. > > I need to use it with framebuffer to increase the graph performances. > > The compilation works well, but I've noticed a strange behaviour. > > Running the test utility (make test && test/test) I obtain correctly the > > colorful triangle, and here the cli output: > > > > EGL Version: "1.4 Linux-r3p0-04rel0" > > EGL Vendor: "ARM" > > EGL Extensions: "EGL_KHR_image EGL_KHR image_base EGL_KHR_image_pixmap > > EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image > > EGL_KHR_gl_renderbuffer_image EGL_KHR_reusable_sync EGL_KHR_fence_sync > > EGL_KHR_lock_surface EGL_KHR_lock_surface2 " > > Surface size: 480x480 > > GL Vendor: "ARM" > > GL Renderer: "Mali-400 MP" > > GL Version: "OpenGL ES 2.0" > > GL Extensions: "GL_OES_texture_npot GL_OES_compressed_ETC1_RGB8_texture > > GL_OES_standard_derivatives GL_OES_EGL_image GL_OES_depth24 GL_ARM_rgba8 > > GL_ARM_mali_shader_binary GL_OES_depth_texture GL_OES_packed_depth_stencil > > GL_EXT_texture_format_BGRA8888 GL_EXT_blend_minmax > > GL_OES_EGL_image_external GL_OES_EGL_sync > > GL_EXT_multisampled_render_to_texture GL_EXT_discard_framebuffer > > GL_OES_get_program_binary GL_EXT_shader_texture_lod " > > > > > > > > The problem is I cannot exit the test, or better, it kills the test, but I > > still > > have the triangle on screen. I need to switch between two consoles > > (i.e. if I'm in console Alt+F1 I need to change Alt+F2 and then Alt+F1 > > back), only so I obtain a refresh of the view. > > > > What could cause the problem? > > > > This behaviour happens on any program that uses framebuffer to redender the > > images. So, in example, if I exit a program that uses FB, I need to > > switch between views to force a refresh. > > > > > > Is there a way to debug it or, better, a solution? > > Hello again. > Sorry if I top post the thread, but seems strange I'm the only having this > issue. It happens with different distros as well as on different boards. > I would exclude OS or hardware problems. > If someone suggest me how to debug, would be good. > A sort of backgroun screen-refresh would be a workaround as well, but don't > know how. > Right after executing the test, the mouse remains visible. I've tested > 'xrefresh -black' as well, as found somewhere on the net, but it doesn't > rebuild the desktop. > I've seen the 'test' program is launched and it exits immediatly, also It's > not a matter of the program itself. > Strange is, sometimes the terminal (withing x11) I use to launch the test > program, comes back visible. In example if I launch 'fbset -xres 1280 -yres > 1024' right after the 'test' (I need to write the command without seeing > what I'm writing, because all is hidden by the trianble) I get a refresh of > only the terminal window. Moving then the terminal I can "redraw" the rest > of the desktop. > In fact the problem is unchanged. I'm again thinking that resolving this > issue could resolve automatically the problems I get with other > applications as well. Basically, it looks like you want to have your cake and eat it too :-) The framebuffer mali driver is designed for single-tasking, with just one application ever drawing something to the screen. The x11 mali driver is designed to work in the multi-tasking x11 window system environment, where each application has its own window. Naturally, doing the synchronization to ensure that all the applications play nice together incurs a little bit of overhead. So you just need to pick the right driver for your use case. -- Best regards, Siarhei Siamashka -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
