i965: Add support for accelerated CopyTexSubImage.

There were hacks in EmitCopyBlit before to adjust offsets so that y=0 after
the offsets had been adjusted for a negative pitch.  It appears that those
hacks were due to an unclear and surprising aspect of the hardware: inverting
the pitch results in the blit into the specified rectangle being inverted,
without the user needing to adjust y and base offset.

Tested with piglit copytexsubimage test on 915GM and GM965.  Should fix
serious performance issues with ETQW and other applications.

1 files changed, 0 insertions, 7 deletions

diff --git a/src/mesa/drivers/dri/intel/intel_tex.c b/src/mesa/drivers/dri/intel/intel_tex.c
index 23455a4c74..82f8b87009 100644
--- a/src/mesa/drivers/dri/intel/intel_tex.c
+++ b/src/mesa/drivers/dri/intel/intel_tex.c
@@ -222,17 +222,10 @@ intelInitTextureFuncs(struct dd_function_table *functions)
    functions->TexSubImage1D = intelTexSubImage1D;
    functions->TexSubImage2D = intelTexSubImage2D;
    functions->TexSubImage3D = intelTexSubImage3D;
-#ifdef I915
    functions->CopyTexImage1D = intelCopyTexImage1D;
    functions->CopyTexImage2D = intelCopyTexImage2D;
    functions->CopyTexSubImage1D = intelCopyTexSubImage1D;
    functions->CopyTexSubImage2D = intelCopyTexSubImage2D;
-#else
-   functions->CopyTexImage1D = _swrast_copy_teximage1d;
-   functions->CopyTexImage2D = _swrast_copy_teximage2d;
-   functions->CopyTexSubImage1D = _swrast_copy_texsubimage1d;
-   functions->CopyTexSubImage2D = _swrast_copy_texsubimage2d;
-#endif
    functions->GetTexImage = intelGetTexImage;
    functions->GenerateMipmap = intelGenerateMipmap;