wined3d: Prefer shader backends that support both vertex and fragment shaders over ones that support only either.
Apparently there exist some configurations that support both ARB_vertex_program and ARB_vertex_shader, but only ARB_fragment_program and not ARB_fragment_shader. Note that this would change the selected backend for the Geforce 4 cards mentioned in the comment, but hopefully the mentioned GLSL bug is no longer a concern. Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
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@ -2504,18 +2504,12 @@ static const struct wined3d_shader_backend_ops *select_shader_backend(const stru
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{
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BOOL glsl = wined3d_settings.glslRequested && gl_info->glsl_version >= MAKEDWORD_VERSION(1, 20);
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if (glsl && gl_info->supported[ARB_FRAGMENT_SHADER])
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if (glsl && gl_info->supported[ARB_VERTEX_SHADER] && gl_info->supported[ARB_FRAGMENT_SHADER])
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return &glsl_shader_backend;
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if (glsl && gl_info->supported[ARB_VERTEX_SHADER])
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{
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/* Geforce4 cards support GLSL but for vertex shaders only. Further
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* its reported GLSL caps are wrong. This combined with the fact that
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* GLSL won't offer more features or performance, use ARB shaders only
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* on this card. */
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if (gl_info->supported[NV_VERTEX_PROGRAM] && !gl_info->supported[NV_VERTEX_PROGRAM2])
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if (gl_info->supported[ARB_VERTEX_PROGRAM] && gl_info->supported[ARB_FRAGMENT_PROGRAM])
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return &arb_program_shader_backend;
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if (glsl && (gl_info->supported[ARB_VERTEX_SHADER] || gl_info->supported[ARB_FRAGMENT_SHADER]))
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return &glsl_shader_backend;
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}
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if (gl_info->supported[ARB_VERTEX_PROGRAM] || gl_info->supported[ARB_FRAGMENT_PROGRAM])
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return &arb_program_shader_backend;
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return &none_shader_backend;
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