这是一个大问题:首先，虽然我对 XLib API 了解一点，但我想测试并确保我可以在之前实际创建 OpenGL 渲染上下文 (3.0)我做了任何事情，因此我只是复制并粘贴了一些测试代码并运行了它。
当我运行代码时，我的输出如下:
GLX_ARB_get_proc_address GLX_ARB_multisample GLX_EXT_import_context GLX_EXT_visual_info GLX_EXT_visual_rating GLX_MESA_copy_sub_buffer GLX_MESA_multithread_makecurrent GLX_MESA_swap_control GLX_OML_swap_method GLX_OML_sync_control GLX_SGI_make_current_read GLX_SGI_swap_control GLX_SGI_video_sync GLX_SGIS_multisample GLX_SGIX_fbconfig GLX_SGIX_pbuffer GLX_SGIX_visual_select_group GLX_EXT_texture_from_pixmap
Getting framebuffer config
Getting XVisualInfo
Creating colormap
Creating window
Mapping window
Creating context
X Error of failed request: BadRequest (invalid request code or no such operation)
Major opcode of failed request: 152 (GLX)
Minor opcode of failed request: 34 ()
Serial number of failed request: 27
Current serial number in output stream: 26
此外，对 glxinfo 的后续调用产生
name of display: :0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_OML_swap_method, GLX_SGI_swap_control, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_EXT_framebuffer_sRGB,
GLX_EXT_create_context_es2_profile, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control,
GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_EXT_texture_from_pixmap, GLX_INTEL_swap_event
GLX version: 1.4
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, GLX_MESA_swap_control,
GLX_OML_swap_method, GLX_OML_sync_control, GLX_SGI_make_current_read,
GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample,
GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group,
GLX_EXT_texture_from_pixmap
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) Sandybridge Mobile
OpenGL version string: 3.0 Mesa 8.0
OpenGL shading language version string: 1.30
OpenGL extensions:
GL_ARB_multisample, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_copy_texture,
GL_EXT_polygon_offset, GL_EXT_subtexture, GL_EXT_texture_object,
GL_EXT_vertex_array, GL_EXT_compiled_vertex_array, GL_EXT_texture,
GL_EXT_texture3D, GL_IBM_rasterpos_clip, GL_ARB_point_parameters,
GL_EXT_draw_range_elements, GL_EXT_packed_pixels, GL_EXT_point_parameters,
GL_EXT_rescale_normal, GL_EXT_separate_specular_color,
GL_EXT_texture_edge_clamp, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_ARB_framebuffer_sRGB, GL_ARB_multitexture,
GL_EXT_framebuffer_sRGB, GL_IBM_multimode_draw_arrays,
GL_IBM_texture_mirrored_repeat, GL_3DFX_texture_compression_FXT1,
GL_ARB_texture_cube_map, GL_ARB_texture_env_add, GL_ARB_transpose_matrix,
GL_EXT_blend_func_separate, GL_EXT_fog_coord, GL_EXT_multi_draw_arrays,
GL_EXT_secondary_color, GL_EXT_texture_env_add,
GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod_bias,
GL_INGR_blend_func_separate, GL_NV_blend_square, GL_NV_light_max_exponent,
GL_NV_texgen_reflection, GL_NV_texture_env_combine4,
GL_SUN_multi_draw_arrays, GL_ARB_texture_border_clamp,
GL_ARB_texture_compression, GL_EXT_framebuffer_object,
GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3, GL_MESA_window_pos,
GL_NV_packed_depth_stencil, GL_NV_texture_rectangle, GL_NV_vertex_program,
GL_ARB_depth_texture, GL_ARB_occlusion_query, GL_ARB_shadow,
GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar,
GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat,
GL_ARB_window_pos, GL_ATI_envmap_bumpmap, GL_EXT_stencil_two_side,
GL_EXT_texture_cube_map, GL_NV_depth_clamp, GL_NV_vertex_program1_1,
GL_APPLE_packed_pixels, GL_APPLE_vertex_array_object, GL_ARB_draw_buffers,
GL_ARB_fragment_program, GL_ARB_fragment_shader, GL_ARB_shader_objects,
GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ATI_draw_buffers,
GL_ATI_texture_env_combine3, GL_ATI_texture_float, GL_EXT_shadow_funcs,
GL_EXT_stencil_wrap, GL_MESA_pack_invert, GL_MESA_ycbcr_texture,
GL_ARB_depth_clamp, GL_ARB_fragment_program_shadow,
GL_ARB_half_float_pixel, GL_ARB_point_sprite, GL_ARB_shading_language_100,
GL_ARB_sync, GL_ARB_texture_non_power_of_two, GL_ARB_vertex_buffer_object,
GL_ATI_blend_equation_separate, GL_EXT_blend_equation_separate,
GL_OES_read_format, GL_ARB_color_buffer_float, GL_ARB_pixel_buffer_object,
GL_ARB_texture_compression_rgtc, GL_ARB_texture_float,
GL_ARB_texture_rectangle, GL_EXT_packed_float, GL_EXT_pixel_buffer_object,
GL_EXT_texture_compression_rgtc, GL_EXT_texture_rectangle,
GL_EXT_texture_sRGB, GL_EXT_texture_shared_exponent,
GL_ARB_framebuffer_object, GL_EXT_framebuffer_blit,
GL_EXT_framebuffer_multisample, GL_EXT_packed_depth_stencil,
GL_APPLE_object_purgeable, GL_ARB_vertex_array_object,
GL_ATI_separate_stencil, GL_EXT_draw_buffers2,
GL_EXT_gpu_program_parameters, GL_EXT_texture_array,
GL_EXT_texture_integer, GL_EXT_texture_sRGB_decode, GL_EXT_timer_query,
GL_OES_EGL_image, GL_MESA_texture_array, GL_ARB_copy_buffer,
GL_ARB_depth_buffer_float, GL_ARB_half_float_vertex,
GL_ARB_map_buffer_range, GL_ARB_texture_rg, GL_ARB_texture_swizzle,
GL_ARB_vertex_array_bgra, GL_EXT_separate_shader_objects,
GL_EXT_texture_swizzle, GL_EXT_vertex_array_bgra,
GL_NV_conditional_render, GL_ARB_ES2_compatibility,
GL_ARB_draw_elements_base_vertex, GL_ARB_explicit_attrib_location,
GL_ARB_fragment_coord_conventions, GL_ARB_provoking_vertex,
GL_ARB_sampler_objects, GL_ARB_seamless_cube_map,
GL_ARB_shader_texture_lod, GL_EXT_provoking_vertex, GL_EXT_texture_snorm,
GL_MESA_texture_signed_rgba, GL_ARB_robustness, GL_EXT_transform_feedback
32 GLX Visuals
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
根据此规范，我的 could 应该可以工作 - 对吗？如果不是，我能做些什么来改变它吗？我读过的任何关于遇到此类问题的论坛帖子通常都是由于人们在尝试初始化上下文时缺乏 OpenGL 3.x 的正确实现，这导致他们具有与我测试过的代码类似的输出.
我还为我的发行版搜索了各种 X11 包，看看我是否可能会或可能不会偶然丢失某些东西。当然，这是徒劳的，因为我所做的 最终安装/更改要么使事情变得更糟，要么根本不起作用。
xorg.conf
Section "Module"
SubSection "extmod"
Option "omit xfree86-dga"
EndSubSection
Load "i2c"
Load "ddc"
Load "vbe"
Load "dri"
Load "glx"
Load "synaptics"
Load "drm"
EndSection
Section "ServerFlags"
Option "AllowMouseOpenFail" "true"
EndSection
Section "Monitor"
Identifier "Generic Monitor"
VertRefresh 43 - 60
HorizSync 28 - 80
EndSection
Section "Device"
Identifier "SabayonVga0"
Driver "intel"
#BusID "PCI:00:02"
#Option "RenderAccel" "on"
#Option "XAANoOffscreenPixmaps"
#Option "BusType" "PCI"
#Option "ColorTiling" "on"
#Option "EnablePageFlip" "on"
# UseEvents is causing segmentation faults with
# NVIDIA 6xxx, 7xxx and >=275.xx.xx drivers
#Option "UseEvents" "True"
Option "LogoPath" "/usr/share/backgrounds/sabayonlinux-nvidia.png"
EndSection
Section "Screen"
Identifier "Screen 0"
Device "SabayonVga0"
Monitor "Generic Monitor"
Option "AddARGBGLXVisuals" "true"
DefaultDepth 24
SubSection "Display"
Depth 8
ViewPort 0 0
#Modes "1024x768" "800x600" "640x480"
EndSubsection
SubSection "Display"
Depth 16
ViewPort 0 0
#Modes "1024x768" "800x600" "640x480"
EndSubsection
SubSection "Display"
Depth 24
ViewPort 0 0
#Modes "1024x768" "800x600" "640x480"
EndSubsection
EndSection
Section "DRI"
Mode 0666
EndSection
Section "ServerLayout"
Identifier "Main Layout"
Screen 0 "Screen 0"
EndSection
Section "Extensions"
#Option "Composite" "Enable"
EndSection
执行的代码
#include <GL/glx.h>
#include <GL/gl.h>
#include <unistd.h>
#include <iostream>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#define GLX_CONTEXT_MAJOR_VERSION_ARB 0x2091
#define GLX_CONTEXT_MINOR_VERSION_ARB 0x2092
typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool, const int*);
int main (int argc, char ** argv)
{
Display *display = XOpenDisplay(0);
glXCreateContextAttribsARBProc glXCreateContextAttribsARB = NULL;
const char *extensions = glXQueryExtensionsString(display, DefaultScreen(display));
std::cout << extensions << std::endl;
static int visual_attribs[] =
{
GLX_RENDER_TYPE, GLX_RGBA_BIT,
GLX_DRAWABLE_TYPE, GLX_WINDOW_BIT,
GLX_DOUBLEBUFFER, true,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
None
};
std::cout << "Getting framebuffer config" << std::endl;
int fbcount;
GLXFBConfig *fbc = glXChooseFBConfig(display, DefaultScreen(display), visual_attribs, &fbcount);
if (!fbc)
{
std::cout << "Failed to retrieve a framebuffer config" << std::endl;
return 1;
}
std::cout << "Getting XVisualInfo" << std::endl;
XVisualInfo *vi = glXGetVisualFromFBConfig(display, fbc[0]);
XSetWindowAttributes swa;
std::cout << "Creating colormap" << std::endl;
swa.colormap = XCreateColormap(display, RootWindow(display, vi->screen), vi->visual, AllocNone);
swa.border_pixel = 0;
swa.event_mask = StructureNotifyMask;
std::cout << "Creating window" << std::endl;
Window win = XCreateWindow(display, RootWindow(display, vi->screen), 0, 0, 100, 100, 0, vi->depth, InputOutput, vi->visual, CWBorderPixel|CWColormap|CWEventMask, &swa);
if (!win)
{
std::cout << "Failed to create window." << std::endl;
return 1;
}
std::cout << "Mapping window" << std::endl;
XMapWindow(display, win);
// Create an oldstyle context first, to get the correct function pointer for glXCreateContextAttribsARB
GLXContext ctx_old = glXCreateContext(display, vi, 0, GL_TRUE);
glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc)glXGetProcAddress((const GLubyte*)"glXCreateContextAttribsARB");
glXMakeCurrent(display, 0, 0);
glXDestroyContext(display, ctx_old);
if (glXCreateContextAttribsARB == NULL)
{
std::cout << "glXCreateContextAttribsARB entry point not found. Aborting." << std::endl;
return false;
}
static int context_attribs[] =
{
GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
GLX_CONTEXT_MINOR_VERSION_ARB, 0,
None
};
std::cout << "Creating context" << std::endl;
GLXContext ctx = glXCreateContextAttribsARB(display, fbc[0], NULL, true, context_attribs);
if (!ctx)
{
std::cout << "Failed to create GL3 context." << std::endl;
return 1;
}
std::cout << "Making context current" << std::endl;
glXMakeCurrent(display, win, ctx);
glClearColor (0, 0.5, 1, 1);
glClear (GL_COLOR_BUFFER_BIT);
glXSwapBuffers (display, win);
sleep(1);
glClearColor (1, 0.5, 0, 1);
glClear (GL_COLOR_BUFFER_BIT);
glXSwapBuffers (display, win);
sleep(1);
ctx = glXGetCurrentContext();
glXMakeCurrent(display, 0, 0);
glXDestroyContext(display, ctx);
}
我对这怎么可能发生感到很困惑。有人可以针对此问题提供一些见解和/或解决方案吗？
最佳答案
该程序在我的系统上运行没有错误。
据推测，ld.so 链接到可执行文件的库对于 X11 服务器是错误的。
尝试 ldd <your program>并寻找 libGL.so 的行，例如:
libGL.so.1 => /usr/lib/nvidia-current/libGL.so.1 (0x00007f9d4bdf5000)
如果该库不是您系统的正确库，则任何事情都可能发生。 X11“无效操作码”错误很有可能。
此外，使用 GLEW .它负责处理诸如定位 GL 调用之类的细节。
关于c - OpenGL 渲染上下文产生 "opcode of failed request 152 (GLX)"(Mesa 8.0 - OpenGL 3.0，Linux)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/9694540/