wined3d: Check for support before calling glDrawElementsInstancedBaseVertex.

84a1e60e · Stefan Dösinger · Alexandre Julliard · ec1a57f2 · 84a1e60e
Commit 84a1e60e authored Nov 04, 2013 by Stefan Dösinger Committed by Alexandre Julliard Nov 04, 2013
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drawprim.c dlls/wined3d/drawprim.c +9 -0

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--- a/dlls/wined3d/drawprim.c
+++ b/dlls/wined3d/drawprim.c
@@ -52,10 +52,19 @@ static void drawStridedFast(const struct wined3d_gl_info *gl_info, GLenum primit
            {
                if (start_instance)
                    FIXME("Start instance (%u) not supported.\n", start_instance);
+                if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
+                {
                    GL_EXTCALL(glDrawElementsInstancedBaseVertex(primitive_type, count, idxtype,
                            (const char *)idx_data + (idx_size * start_idx), instance_count, base_vertex_index));
                    checkGLcall("glDrawElementsInstancedBaseVertex");
                }
+                else
+                {
+                    GL_EXTCALL(glDrawElementsInstancedARB(primitive_type, count, idxtype,
+                            (const char *)idx_data + (idx_size * start_idx), instance_count));
+                    checkGLcall("glDrawElementsInstancedARB");
+                }
+            }
        }
        else if (gl_info->supported[ARB_DRAW_ELEMENTS_BASE_VERTEX])
        {