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mesa: return early if mask is cleared to zero in BlitFramebuffer

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From ARB_framebuffer_object:
    If a buffer is specified in <mask> and does not exist in both the
    read and draw framebuffers, the corresponding bit is silently
    ignored.
(cherry picked from commit 83478e5d59)
This commit is contained in:
Marek Olšák 2011-07-10 20:01:33 +02:00
parent e041956cb2
commit 7a75fcd657
1 changed files with 4 additions and 0 deletions
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4
src/mesa/main/fbobject.c
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@ -2447,6 +2447,10 @@ _mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
} }
} }
if (!mask) {
return;
}
ASSERT(ctx->Driver.BlitFramebuffer); ASSERT(ctx->Driver.BlitFramebuffer);
ctx->Driver.BlitFramebuffer(ctx, ctx->Driver.BlitFramebuffer(ctx,
srcX0, srcY0, srcX1, srcY1, srcX0, srcY0, srcX1, srcY1,