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anv: Clamp depth buffer dimensions to be at least 1.

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When there are no framebuffer attachments, fb->width and fb->height will
be 0.  Subtracting 1 results in 4294967295 which is too large for the
field, causing genxml assertions when trying to create the packet.

In this case, we can just program it to 1.

Caught by dEQP-VK.tessellation.tesscoord.triangles_equal_spacing.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Kenneth Graunke 2016-09-29 11:53:17 -07:00
parent e50d4807a3
commit dcca706b4e
1 changed files with 2 additions and 2 deletions
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4
src/intel/vulkan/genX_cmd_buffer.c
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@ -2159,8 +2159,8 @@ cmd_buffer_emit_depth_stencil(struct anv_cmd_buffer *cmd_buffer)
db.SurfaceType = SURFTYPE_2D;
}
db.SurfaceFormat = D32_FLOAT;
db.Width = fb->width - 1;
db.Height = fb->height - 1;
db.Width = MAX2(fb->width, 1) - 1;
db.Height = MAX2(fb->height, 1) - 1;
db.StencilWriteEnable = has_stencil;
}
}