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02e768e6a9
Not so bad :) Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6476>
100 lines
3.7 KiB
C
100 lines
3.7 KiB
C
/*
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* Copyright (C) 2019 Collabora, Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Authors (Collabora):
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* Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
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*
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*/
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#include <assert.h>
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#include "util/u_math.h"
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#include "pan_encoder.h"
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/* Compute shaders are invoked with a gl_NumWorkGroups X/Y/Z triplet. Vertex
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* shaders, it turns out, are invoked with the same mechanism, with the triplet
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* (1, vertex_count, instance_count).
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*
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* Alongside this triplet is the gl_WorkGroupSize X/Y/Z triplet.
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*
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* Unfortunately, the packing for these triplet into the
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* mali_vertex_tiler_prefix is a little funky, using a dynamic bitfield. The
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* routines here exist to pack this */
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void
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panfrost_pack_work_groups_compute(
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struct mali_invocation_packed *out,
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unsigned num_x,
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unsigned num_y,
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unsigned num_z,
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unsigned size_x,
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unsigned size_y,
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unsigned size_z,
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bool quirk_graphics)
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{
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uint32_t packed = 0;
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/* The values needing packing, in order, and the corresponding shifts.
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* Indicies into shift are off-by-one to make the logic easier */
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unsigned shifts[7] = { 0 };
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unsigned values[6] = {
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MALI_POSITIVE(size_x),
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MALI_POSITIVE(size_y),
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MALI_POSITIVE(size_z),
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MALI_POSITIVE(num_x),
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MALI_POSITIVE(num_y),
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MALI_POSITIVE(num_z),
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};
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for (unsigned i = 0; i < 6; ++i) {
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/* OR it in, shifting as required */
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packed |= (values[i] << shifts[i]);
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/* How many bits did we use? */
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unsigned bit_count = util_logbase2_ceil(values[i] + 1);
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/* Set the next shift accordingly */
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shifts[i + 1] = shifts[i] + bit_count;
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}
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pan_pack(out, INVOCATION, cfg) {
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cfg.invocations = packed;
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cfg.size_y_shift = shifts[1];
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cfg.size_z_shift = shifts[2];
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cfg.workgroups_x_shift = shifts[3];
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cfg.workgroups_y_shift = shifts[4];
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cfg.workgroups_z_shift = shifts[5];
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/* Quirk: for non-instanced graphics, the blob sets
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* workgroups_z_shift = 32. This doesn't appear to matter to
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* the hardware, but it's good to be bit-identical. */
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if (quirk_graphics && (num_z <= 1))
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cfg.workgroups_z_shift = 32;
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/* Quirk: for graphics, >= 2. For compute, 2 without barriers
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* but equal to workgroups_x_shift with barriers */
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cfg.unknown_shift = quirk_graphics ? 2 : cfg.workgroups_x_shift;
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}
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}
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