wined3d: Give GL_ARB_map_buffer_range another try.

Nvidia's 270.xx.yy driver series fix the glMapBuffer alignment issues that caused major performance problems. If the user is using an older driver we now drop the VBO instead of using doublebuffered loading, which means that we fall back to the current behavior(no dynamic VBO) as needed. Dynamic VBOs are needed on Nvidia drivers for GL_ARB_instanced_arrays.

wined3d: Give GL_ARB_map_buffer_range another try.
68b15bc5 · Stefan Dösinger · Alexandre Julliard · 12140b51 · 68b15bc5
Commit 68b15bc5 authored Apr 19, 2011 by Stefan Dösinger Committed by Alexandre Julliard Jun 17, 2011
Show whitespace changes
Inline Side-by-side

Showing with 1 addition and 2 deletions

buffer.c dlls/wined3d/buffer.c +1 -2

No files found.
--- a/dlls/wined3d/buffer.c
+++ b/dlls/wined3d/buffer.c
@@ -1212,8 +1212,7 @@ static HRESULT buffer_init(struct wined3d_buffer *buffer, struct wined3d_device 
    TRACE("size %#x, usage %#x, format %s, memory @ %p, iface @ %p.\n", buffer->resource.size, buffer->resource.usage,
            debug_d3dformat(buffer->resource.format->id), buffer->resource.allocatedMemory, buffer);

-    /* GL_ARB_map_buffer_range is disabled for now due to numerous bugs and no gains */
-    dynamic_buffer_ok = gl_info->supported[APPLE_FLUSH_BUFFER_RANGE];
+    dynamic_buffer_ok = gl_info->supported[APPLE_FLUSH_BUFFER_RANGE] || gl_info->supported[ARB_MAP_BUFFER_RANGE];

    /* Observations show that drawStridedSlow is faster on dynamic VBs than converting +
     * drawStridedFast (half-life 2 and others).