- use an enum
- use a unique slot number regardless of the shader stage
(the per-stage slots will go away for RW buffers)
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
shader->config is not updated for compute kernels.
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
This fixes GS piglit failures after adding SI_PARAM_SHADER_BUFFERS,
which bumped NUM_USER_SGPRS and uncovered this bug on SI.
If this was fixed in LLVM, these workarounds wouldn't be needed.
LLVM would have to look at the calling convention to know how many SGPR
inputs are declared, and add VCC and the scratch wave offset (which is
enabled even if we spill SGPRs but not VGPRs, oh well).
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This allows compiling the main shader part as ES or LS.
If we get the correct hint, non-separable GLSL shaders no longer have to be
compiled as VS first, followed by LS or ES compiled on demand.
The result is that fewer shaders are compiled by piglit, but it doesn't
improve piglit running time.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This can increase perf for shaders that kill pixels (kill, alpha-test,
alpha-to-coverage).
v2: add comments
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Still disabled.
Only prologs & epilogs are compiled in draw calls, but each variant of those
is compiled only once per process.
VS is always compiled as hw VS.
TES is always compiled as hw VS.
LS and ES stages are always compiled on demand.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This fixes FP16 conversion instructions for VI, which has 16-bit floats,
but not SI & CI, which can't disable denorms for those instructions.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
It was partly a state and partly emulated by shader code, but since we want
to do this in a fragment shader prolog, we need to put it into the shader
key, which will be used to generate the prolog.
This also removes the spi_ps_input states and moves the registers
to the PS state.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
BCOLOR inputs were immediately after COLOR inputs. Thus, all following inputs
were offset by 1 if color_two_side was enabled, and not offset if it was not
enabled, which is a variation that's problematic if we want to have 1 variant
per shader and the variant doesn't care about color_two_side (that should be
handled by other bytecode attached at the beginning).
Instead, move BCOLOR inputs after all other inputs, so BCOLOR0 is at location
"num_inputs" if it's present. BCOLOR1 is next.
This also allows removing si_shader::nparam and
si_shader::ps_input_param_offset, which are useless now.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This fixes it.
States which also need to be taken into account:
- SPI color formats - each down-conversion format supports only a limited set
of SPI formats
- whether MSAA resolving and logic op are enabled
These need special handling:
- blending
- disabled channels
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
The addition of spi_shader_col_format killed all color outputs
in precompiled shaders.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> (v1)
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com> (v1)
v2: also set the alpha func (trivial)
We now have an explicit parameter that contains the same information, and
this will allow us to get rid of is_gs_copy_shader in the si_shader struct.
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Specifically, when the API switches from using a GS to not using a GS and then
back to using the same GS again, we do not have to re-send all the GS state,
but we do have to send VGT_GS_MODE. So make VGT_GS_MODE consistently be a part
of the VS state.
This fixes a rendering bug in Dolphin, but surely other applications are
affected as well.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93648
Cc: "11.0 11.1" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
When a fragment shader is used that has no outputs but does conditional
discard (KILL_IF), all fragments are killed without this patch.
By comparing various register settings, my conclusion is that the exec mask
is either not properly forwarded to the DB by NULL exports or ends up being
unused, at least when there is _only_ a NULL export (the ISA documentation
claims that NULL exports can be used to override a previously exported exec
mask).
Of the various approaches I have tried to work around the problem, this one
seems to be the least invasive one.
v2: take discard by alpha test into account as well
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93761
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
because not using SPI_SHADER_32_ABGR doubles fill rate.
We should also get optimal performance if alpha isn't needed or blending
isn't enabled.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This does change the behavior slightly:
If a shader writes COLOR[i] and that color buffer isn't bound,
the shader will export MRT_NULL instead and discard the IR tree that
calculates the output. The only exception is alpha-to-coverage, which
requires an alpha export.
v2: - update a comment about 16BPC
- account for MRTZ when when fixing alpha-test/kill
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
I'm not sure about the consequences of this bug, but it's definitely
dangerous.
This applies to SI, CIK, VI.
Cc: 11.0 11.1 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
There will be 1 config per variant, which will be a union of configs
from {prolog, main, epilog}. For now, just add the structure.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This doesn't fix a known bug, but better safe than sorry.
Also, simplify the expression in si_shader.c.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
because the API pixel shader binary will not emulate alpha test one day,
so the KILL_ENABLE bit must be determined elsewhere.
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This will allow us to send shader debug info.
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> (v1)
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This changes the count slightly (because of si_generate_gs_copy_shader), but
this is only relevant for the driver-specific num-compilations query. It sets
the stage for the next commit.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Marek Olšák
Bas Nieuwenhuizen
Nicolai Hähnle