gallium: Make PIPE_CAP_DEPTH_CLIP_DISABLE a tri-state value and use it
Use value "2" to signal that lowering is needed and supported and enable it accordingly. v2: - Note in CAP description that this lowering currently requires TGSI - use "true" instead of GL_TRUE (both Erik) Signed-off-by: Gert Wollny <gert.wollny@collabora.com> Reviewed-by: Reviewed-by: Marek Olšák <marek.olsak@amd.com>
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@ -67,7 +67,9 @@ The integer capabilities:
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* ``PIPE_CAP_TGSI_FS_COORD_PIXEL_CENTER_INTEGER``: Whether the TGSI
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property FS_COORD_PIXEL_CENTER with value INTEGER is supported.
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* ``PIPE_CAP_DEPTH_CLIP_DISABLE``: Whether the driver is capable of disabling
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depth clipping (through pipe_rasterizer_state)
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depth clipping (=1) (through pipe_rasterizer_state) or supports lowering
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depth_clamp in the client shader code (=2), for this the driver must
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currently use TGSI.
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* ``PIPE_CAP_DEPTH_CLIP_DISABLE_SEPARATE``: Whether the driver is capable of
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disabling depth clipping (through pipe_rasterizer_state) separately for
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the near and far plane. If not, depth_clip_near and depth_clip_far will be
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@ -699,6 +699,9 @@ st_create_context_priv(struct gl_context *ctx, struct pipe_context *pipe,
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}
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}
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if (screen->get_param(screen, PIPE_CAP_DEPTH_CLIP_DISABLE) == 2)
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st->clamp_frag_depth_in_shader = true;
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/* called after _mesa_create_context/_mesa_init_point, fix default user
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* settable max point size up
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*/
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