On Sat, 9 May 2009 22:29:51 +0400 dmitry boyarintsev <skalogryz.li...@gmail.com> wrote:
> uses > ...gl, glext... > > ... > if not Load_GL_version_2_0 then begin > writeln('OpenGL 2.0 is not supported'); > Halt; > end; > ... This does not work for me. I added it to the Init function of my render engine (as I know that at this time I have a valid OpenGL context) to no avail. My code keeps crashing at this call (in a different unit, so I tried calling Load_GL_version_2_0 there too, with the same result): if glIsBufferARB(VertexBuffer)=GL_TRUE then (asmtypes.pas:2212) The backtrace is not very helpfull for me: #0 0x0000000000000000 in ?? () #1 0x0000000000750491 in CREATEBUFFERS (this=0x7fb7e83cd200) at asmtypes.pas:2212 So I tried just loading the VBO extension: if not glext_LoadExtension('GL_ARB_vertex_buffer_object') then begin writeln('VBO is not supported'); Halt; end; Resulting in this: #0 0x0000000000760a6f in GLEXT_EXTENSIONSUPPORTED ( EXTENSION=0xb39788 'GL_ARB_vertex_buffer_object', SEARCHIN=0x7f7988ac2320 'GL_ARB_color_buffer_float GL_ARB_depth_texture GL_ARB_draw_buffers GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB'...) at gllibs/glext.pp:4268 #1 0x000000000076c7f3 in LOAD_GL_ARB_VERTEX_BUFFER_OBJECT () at gllibs/glext.pp:7591 #2 0x00000000007736c3 in GLEXT_LOADEXTENSION ( EXT=0xb2d788 'GL_ARB_vertex_buffer_object') at gllibs/glext.pp:9509 This is on Ubuntu 9.04 64-bit. My card and driver support OpenGL Version 2.1.2, so that is not the problem. Anyone any ideas? -- A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal