[Bug 25290] R600: Doesn't correctly handle glFrontFace(GL_CW)

[<bug...@fr...>]

http://bugs.freedesktop.org/show_bug.cgi?id=25290





--- Comment #3 from Rafael Monica <mo...@gm...>  2009-12-20 08:49:05 PST ---
I think I found the problem. The hardware already makes the right decision
based on the FACE_bit. This code in r700UpdatePolygonMode actually reverses it
when using clockwise winding:

if (ctx->Polygon.FrontFace == GL_CCW) {
    f = ctx->Polygon.FrontMode;
    b = ctx->Polygon.BackMode;
} else {
    f = ctx->Polygon.BackMode;
    b = ctx->Polygon.FrontMode;
}


Changing it to:

f = ctx->Polygon.FrontMode;
b = ctx->Polygon.BackMode;

seems to fix it and render everything correctly.


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