OpenGL问题

outcrop

问题是运行kde自带的GL屏保，只能显示上1/3屏幕的屏保效果，下面2/3黑色，无任何动态效果。

相关信息如下：
agp信息:

1. 
   
2. %dmesg |grep agp
   
3. agp0: <Intel 82915GM (915GM GMCH) SVGA controller> port 0x1800-0x1807 mem 0x90080000-0x900fffff,0xb0000000-0xbfffffff,0x90000000-0x9003ffff irq 16 at device 2.0 on pci0
   
4. agp0: detected 7932k stolen memory
   
5. agp0: aperture size is 256M
   
6. drmsub0: <Intel i915GM>: (child of agp_i810.c) on agp0
   

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drm 信息：

1. 
   
2. %dmesg | grep drm
   
3. drmsub0: <Intel i915GM>: (child of agp_i810.c) on agp0
   
4. info: [drm] AGP at 0x90080000 0MB
   
5. info: [drm] Initialized i915 1.4.0 20060119
   

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成功打开dri:

1. 
   
2. %glxinfo
   
3. name of display: :0.0
   
4. display: :0  screen: 0
   
5. direct rendering: Yes
   
6. server glx vendor string: SGI
   
7. server glx version string: 1.2
   
8. server glx extensions:
   
9.     GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
   
10.     GLX_EXT_import_context, GLX_OML_swap_method, GLX_SGI_make_current_read,
    
11.     GLX_SGIS_multisample, GLX_SGIX_hyperpipe, GLX_SGIX_swap_barrier,
    
12.     GLX_SGIX_fbconfig
    
13. client glx vendor string: SGI
    
14. client glx version string: 1.4
    
15. client glx extensions:
    
16.     GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
    
17.     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
    
18.     GLX_MESA_swap_control, GLX_MESA_swap_frame_usage, GLX_OML_swap_method,
    
19.     GLX_OML_sync_control, GLX_SGI_make_current_read, GLX_SGI_swap_control,
    
20.     GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
    
21.     GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
    
22. GLX extensions:
    
23.     GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
    
24.     GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_allocate_memory,
    
25.     GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGIS_multisample,
    
26.     GLX_SGIX_fbconfig, GLX_SGIX_visual_select_group
    
27. OpenGL vendor string: Tungsten Graphics, Inc
    
28. OpenGL renderer string: Mesa DRI Intel(R) 915GM 20050225
    
29. OpenGL version string: 1.3 Mesa 6.4.1
    
30. OpenGL extensions:
    
31.     GL_ARB_depth_texture, GL_ARB_fragment_program, GL_ARB_imaging,
    
32.     GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_point_parameters,
    
33.     GL_ARB_shadow, GL_ARB_texture_border_clamp, GL_ARB_texture_compression,
    
34.     GL_ARB_texture_cube_map, GL_ARB_texture_env_add,
    
35.     GL_ARB_texture_env_combine, GL_ARB_texture_env_dot3,
    
36.     GL_ARB_texture_mirrored_repeat, GL_ARB_texture_rectangle,
    
37.     GL_ARB_transpose_matrix, GL_ARB_vertex_buffer_object,
    
38.     GL_ARB_vertex_program, GL_ARB_window_pos, GL_EXT_abgr, GL_EXT_bgra,
    
39.     GL_EXT_blend_color, GL_EXT_blend_equation_separate,
    
40.     GL_EXT_blend_func_separate, GL_EXT_blend_minmax, GL_EXT_blend_subtract,
    
41.     GL_EXT_clip_volume_hint, GL_EXT_cull_vertex, GL_EXT_compiled_vertex_array,
    
42.     GL_EXT_convolution, GL_EXT_copy_texture, GL_EXT_draw_range_elements,
    
43.     GL_EXT_fog_coord, GL_EXT_histogram, GL_EXT_multi_draw_arrays,
    
44.     GL_EXT_packed_pixels, GL_EXT_point_parameters, GL_EXT_polygon_offset,
    
45.     GL_EXT_rescale_normal, GL_EXT_secondary_color,
    
46.     GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, GL_EXT_stencil_wrap,
    
47.     GL_EXT_subtexture, GL_EXT_texture, GL_EXT_texture3D,
    
48.     GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add,
    
49.     GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3,
    
50.     GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod_bias,
    
51.     GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_vertex_array,
    
52.     GL_3DFX_texture_compression_FXT1, GL_APPLE_client_storage,
    
53.     GL_APPLE_packed_pixels, GL_ATI_blend_equation_separate,
    
54.     GL_IBM_rasterpos_clip, GL_IBM_texture_mirrored_repeat,
    
55.     GL_INGR_blend_func_separate, GL_MESA_pack_invert, GL_MESA_ycbcr_texture,
    
56.     GL_MESA_window_pos, GL_NV_blend_square, GL_NV_light_max_exponent,
    
57.     GL_NV_texture_rectangle, GL_NV_texgen_reflection, GL_NV_vertex_program,
    
58.     GL_NV_vertex_program1_1, GL_OES_read_format, GL_SGI_color_matrix,
    
59.     GL_SGI_color_table, GL_SGIS_generate_mipmap, GL_SGIS_texture_border_clamp,
    
60.     GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SGIX_depth_texture,
    
61.     GL_SUN_multi_draw_arrays
    
62. glu version: 1.3
    
63. glu extensions:
    
64.     GLU_EXT_nurbs_tessellator, GLU_EXT_object_space_tess
    
65. 
    
66.    visual  x  bf lv rg d st colorbuffer ax dp st accumbuffer  ms  cav
    
67. id dep cl sp sz l  ci b ro  r  g  b  a bf th cl  r  g  b  a ns b eat
    
68. ----------------------------------------------------------------------
    
69. 0x23 16 tc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
    
70. 0x24 16 tc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
    
71. 0x25 16 tc  0 16  0 r  y  .  5  6  5  0  0 16  8  0  0  0  0  0 0 Slow
    
72. 0x26 16 tc  0 16  0 r  .  .  5  6  5  0  0 16  8  0  0  0  0  0 0 Slow
    
73. 0x27 16 tc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
    
74. 0x28 16 tc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
    
75. 0x29 16 tc  0 16  0 r  y  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
    
76. 0x2a 16 tc  0 16  0 r  .  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
    
77. 0x2b 16 dc  0 16  0 r  y  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
    
78. 0x2c 16 dc  0 16  0 r  .  .  5  6  5  0  0 16  0  0  0  0  0  0 0 None
    
79. 0x2d 16 dc  0 16  0 r  y  .  5  6  5  0  0 16  8  0  0  0  0  0 0 Slow
    
80. 0x2e 16 dc  0 16  0 r  .  .  5  6  5  0  0 16  8  0  0  0  0  0 0 Slow
    
81. 0x2f 16 dc  0 16  0 r  y  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
    
82. 0x30 16 dc  0 16  0 r  .  .  5  6  5  0  0 16  0 16 16 16  0  0 0 Slow
    
83. 0x31 16 dc  0 16  0 r  y  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
    
84. 0x32 16 dc  0 16  0 r  .  .  5  6  5  0  0 16  8 16 16 16  0  0 0 Slow
    

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glxgears测试稳定在1400fps左右：

1. 
   
2. %glxgears
   
3. 6913 frames in 5.0 seconds = 1382.557 FPS
   
4. 6958 frames in 5.0 seconds = 1391.595 FPS
   
5. 7001 frames in 5.0 seconds = 1400.087 FPS
   
6. 6991 frames in 5.0 seconds = 1398.142 FPS
   

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xorg.conf

1. 
   
2. Section "ServerLayout"
   
3.         Identifier     "X.org Configured"
   
4.         Screen      0  "Screen0" 0 0
   
5.         InputDevice    "Mouse0" "CorePointer"
   
6.         InputDevice    "Keyboard0" "CoreKeyboard"
   
7. EndSection
   
8. 
   
9. Section "Files"
   
10.         RgbPath      "/usr/X11R6/lib/X11/rgb"
    
11.         ModulePath   "/usr/X11R6/lib/modules"
    
12.         FontPath     "/usr/X11R6/lib/X11/fonts/misc/"
    
13.         FontPath     "/usr/X11R6/lib/X11/fonts/TTF/"
    
14.         FontPath     "/usr/X11R6/lib/X11/fonts/Type1/"
    
15.         FontPath     "/usr/X11R6/lib/X11/fonts/CID/"
    
16.         FontPath     "/usr/X11R6/lib/X11/fonts/75dpi/"
    
17.         FontPath     "/usr/X11R6/lib/X11/fonts/100dpi/"
    
18. EndSection
    
19. 
    
20. Section "Module"
    
21.         Load  "dbe"
    
22.         Load  "dri"
    
23.         Load  "extmod"
    
24.         Load  "glx"
    
25.         Load  "record"
    
26.         Load  "xtrap"
    
27.         Load  "freetype"
    
28.         Load  "type1"
    
29. EndSection
    
30. 
    
31. Section "InputDevice"
    
32.         Identifier  "Keyboard0"
    
33.         Driver      "kbd"
    
34. EndSection
    
35. 
    
36. Section "InputDevice"
    
37.         Identifier  "Mouse0"
    
38.         Driver      "mouse"
    
39.         Option            "Protocol" "auto"
    
40.         Option            "Device" "/dev/sysmouse"
    
41.         Option            "ZAxisMapping" "4 5 6 7"
    
42. EndSection
    
43. 
    
44. Section "Monitor"
    
45.         Identifier   "Monitor0"
    
46.         VendorName   "Monitor Vendor"
    
47.         ModelName    "Monitor Model"
    
48. EndSection
    
49. 
    
50. 
    
51. Section "Device"
    
52.         ### Available Driver options are:-
    
53.         ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
    
54.         ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
    
55.         ### [arg]: arg optional
    
56.         #Option     "NoAccel"                    # [<bool>]
    
57.         #Option     "SWcursor"                   # [<bool>]
    
58.         #Option     "ColorKey"                   # <i>
    
59.         #Option     "CacheLines"                 # <i>
    
60.         #Option     "Dac6Bit"                    # [<bool>]
    
61.         Option     "DRI"                        "True"# [<bool>]
    
62.         #Option     "NoDDC"                      # [<bool>]
    
63.         #Option     "ShowCache"                  # [<bool>]
    
64.         #Option     "XvMCSurfaces"               # <i>
    
65.         #Option     "PageFlip"                   # [<bool>]
    
66.         Identifier  "Card0"
    
67.         Driver      "i810"  
    
68. #######################Added 1#########################
    
69.                  Option      "NoAccel" "false"
    
70.        #Option      "DRI" "true"
    
71.        Option      "DevicePresence" "true"
    
72.        Option      "MonitorLayout" "CRT,LFP"
    
73.        Option      "Clone" "true"
    
74.        #VideoRam    65536
    
75.         Option                "DDC" "false"
    
76. #####################################################
    
77.         VendorName  "Intel Corporation"
    
78.         BoardName   "Mobile 915GM/GMS/910GML Express Graphics Controller"
    
79.         BusID       "PCI:0:2:0"
    
80. EndSection
    
81. 
    
82. Section "Screen"
    
83.         Identifier "Screen0"
    
84.         Device     "Card0"
    
85.         Monitor    "Monitor0"
    
86.         DefaultDepth        16
    
87. 
    
88.         SubSection "Display"
    
89.                 Viewport   0 0
    
90.                 Depth     1
    
91.         EndSubSection
    
92.         SubSection "Display"
    
93.                 Viewport   0 0
    
94.                 Depth     4
    
95.         EndSubSection
    
96.         SubSection "Display"
    
97.                 Viewport   0 0
    
98.                 Depth     8
    
99.         EndSubSection
    
100.         SubSection "Display"
     
101.                 Viewport   0 0
     
102.                 Depth     15
     
103.         EndSubSection
     
104.         SubSection "Display"
     
105.                 Viewport   0 0
     
106.                 Depth     16
     
107.                 Modes "1024x768"
     
108.         EndSubSection
     
109.         SubSection "Display"
     
110.                 Viewport   0 0
     
111.                 Depth     24
     
112.         EndSubSection
     
113. EndSection
     
114. 
     
115. ######################Added 2#############################
     
116. Section "DRI"
     
117.   Mode 0666
     
118. EndSection
     
119. ##########################################################
     

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