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ref_gl: request gl1.1 if compatibility profile unavailiable, this fixes launching with GL <= 2.0, improve old version extension detection

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mittorn 2023-10-13 05:05:34 +03:00
parent 7b67ce3e7c
commit 2e79d51ec8
1 changed files with 12 additions and 4 deletions
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16
ref/gl/gl_opengl.c
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@ -752,10 +752,12 @@ void GL_InitExtensionsGLES( void )
GL_CheckExtension( "ES2 Shaders", shaderobjectsfuncs_gles, "gl_shaderobjects", extid, 2.0 );
break;
case GL_ARB_VERTEX_ARRAY_OBJECT_EXT:
GL_CheckExtension( "vertex_array_object", vaofuncs, "gl_vertex_array_object", extid, 0 );
if(!GL_CheckExtension( "GL_OES_vertex_array_object", vaofuncs, "gl_vertex_array_object", extid, 3.0 ))
!GL_CheckExtension( "GL_EXT_vertex_array_object", vaofuncs, "gl_vertex_array_object", extid, 3.0 );
break;
case GL_DRAW_RANGEELEMENTS_EXT:
GL_CheckExtension( "draw_range_elements", drawrangeelementsfuncs, "gl_drawrangeelements", extid, 0 );
if(!GL_CheckExtension( "GL_EXT_draw_range_elements", drawrangeelementsfuncs, "gl_drawrangeelements", extid, 3.0 ))
GL_CheckExtension( "GL_OES_draw_range_elements", drawrangeelementsfuncs, "gl_drawrangeelements", extid, 3.0 );
break;
case GL_DRAW_RANGE_ELEMENTS_BASE_VERTEX_EXT:
if( !GL_CheckExtension( "GL_OES_draw_elements_base_vertex", drawrangeelementsbasevertexfuncs, "gl_drawrangeelementsbasevertex", GL_DRAW_RANGE_ELEMENTS_BASE_VERTEX_EXT, 0 ) )
@ -886,7 +888,7 @@ void GL_InitExtensionsBigGL( void )
GL_CheckExtension( "GL_ARB_texture_float", NULL, "gl_texture_float", GL_ARB_TEXTURE_FLOAT_EXT, 0 );
GL_CheckExtension( "GL_ARB_depth_buffer_float", NULL, "gl_texture_depth_float", GL_ARB_DEPTH_FLOAT_EXT, 0 );
GL_CheckExtension( "GL_EXT_gpu_shader4", NULL, NULL, GL_EXT_GPU_SHADER4, 0 ); // don't confuse users
GL_CheckExtension( "GL_ARB_vertex_buffer_object", vbofuncs, "gl_vertex_buffer_object", GL_ARB_VERTEX_BUFFER_OBJECT_EXT, 3.0 );
GL_CheckExtension( "GL_ARB_vertex_buffer_object", vbofuncs, "gl_vertex_buffer_object", GL_ARB_VERTEX_BUFFER_OBJECT_EXT, 2.0 );
GL_CheckExtension( "GL_ARB_texture_multisample", multisampletexfuncs, "gl_texture_multisample", GL_TEXTURE_MULTISAMPLE, 0 );
GL_CheckExtension( "GL_ARB_texture_compression_bptc", NULL, "gl_texture_bptc_compression", GL_ARB_TEXTURE_COMPRESSION_BPTC, 0 );
#ifndef XASH_GL_STATIC
@ -1288,7 +1290,13 @@ void GL_SetupAttributes( int safegl )
}
else
{
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_PROFILE_MASK, REF_GL_CONTEXT_PROFILE_COMPATIBILITY );
if( !safegl )
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_PROFILE_MASK, REF_GL_CONTEXT_PROFILE_COMPATIBILITY );
else
{
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MAJOR_VERSION, 1 );
gEngfuncs.GL_SetAttribute( REF_GL_CONTEXT_MINOR_VERSION, 1 );
}
}
#endif // XASH_GLES