gallium: Add PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT

Add PIPE_CAP to determine if the GL extension
'GL_ARB_framebuffer_no_attachments' shall be
supported.

The driver is required to support 'PIPE_FORMAT_NONE'
via its 'is_format_supported()' callback in order
to determine the MSAA modes the hardware supports so
that values requested from the application using
'GL_ARB_framebuffer_no_attachments' may be quantized
to what the hardware expects.

V.2:
 Fix doc for a more detailed description of the PIPE_CAP
 and the corresponding GL constant.

V.3:
 Renamed and repurposed once again.

V.4:
 Remove CAP from cap_mapping array.

[airlied: fix damaged whitespace]

Signed-off-by: Edward O'Callaghan <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c
index c0873c0c65a..ccf794ecda7 100644
--- a/src/gallium/drivers/svga/svga_screen.c
+++ b/src/gallium/drivers/svga/svga_screen.c
@@ -404,6 +404,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param)
    case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
    case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY:
    case PIPE_CAP_QUERY_BUFFER_OBJECT:
+   case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
       return 0;
    }