This bitfield tells the back-ends which of a fragment shader's inputs
require centroid interpolation. It is only set for GLSL fragment
shaders, since assembly fragment shaders don't support centroid
interpolation.
Reviewed-by: Eric Anholt <eric@anholt.net>
This adds index support to the GLSL compiler.
I'm not 100% sure of my approach here, esp without how output ordering
happens wrt location, index pairs, in the "mark" function.
Since current hw doesn't ever have a location > 0 with an index > 0,
we don't have to work out if the output ordering the hw requires is
location, index, location, index or location, location, index, index.
But we have no hw to know, so punt on it for now.
v2: index requires layout - catch and error
setup explicit index properly.
v3: drop idx_offset stuff, assume index follow location
Signed-off-by: Dave Airlie <airlied@redhat.com>
This patch makes GLSL interpolation qualifiers visible to drivers via
the array InterpQualifier[] in gl_fragment_program, so that they can
easily be used by driver back-ends to select the correct interpolation
mode.
Previous to this patch, the GLSL compiler was using the enum
ir_variable_interpolation to represent interpolation types. Rather
than make a duplicate enum in core mesa to represent the same thing, I
moved the enum into mtypes.h and renamed it to be more consistent with
the other enums defined there.
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Having a few of these includes or forward declarations inside the
'extern "C"' block can cause problems later. Specifically, it
prevents C++ linkage functions from being added to ir_to_mesa.h and
makes G++ angry if 'struct foo' is seen both inside and outside an
'extern "C"'.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
We just want to mark the whole thing used, not mark from each element
the whole size in use. Fixes undefined URB entry writes on i965,
which blew up with debugging enabled.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
If you used a constant array index to access the matrix, we'd flag a
bunch of wrong inputs/outputs as being used because the index was
multiplied by matrix columns and the actual used index was left out.
Fixes glsl-mat-attribute.
This lets us handle arrays much better than trying to work backwards
from assembly.
Fixes fbo-drawbuffers-maxtargets on swrast (i965 needs loop unrolling)
