Alyssa Rosenzweig
9061e960b2
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18813>
114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/*
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* Copyright (C) 2022 Alyssa Rosenzweig
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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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#include "agx_pack.h"
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#include <gtest/gtest.h>
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const struct {
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float f;
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uint16_t encoded;
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bool inexact;
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} lod_cases[] = {
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/* Lower bound clamp */
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{ -INFINITY, 0x00, true },
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{ -0.1, 0x00, true },
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{ -0.0, 0x00, true },
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/* Exact bounds */
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{ 0.0, 0x00 },
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{ 14.0, 0x380 },
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/* Upper bound clamp */
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{ 14.1, 0x380, true },
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{ 18.1, 0x380, true },
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{ INFINITY, 0x380, true },
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};
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const struct {
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uint32_t group_size;
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uint32_t length;
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uint32_t value;
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uint32_t encoded;
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} group_cases[] = {
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/* Groups of 16 in a 4-bit word */
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{ 16, 4, 0, 0x1 },
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{ 16, 4, 1, 0x1 },
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{ 16, 4, 16, 0x1 },
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{ 16, 4, 17, 0x2 },
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{ 16, 4, 31, 0x2 },
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{ 16, 4, 32, 0x2 },
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{ 16, 4, 33, 0x3 },
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{ 16, 4, 239, 0xF },
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{ 16, 4, 240, 0xF },
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{ 16, 4, 241, 0x0 },
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{ 16, 4, 255, 0x0 },
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{ 16, 4, 256, 0x0 },
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};
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TEST(LODClamp, Encode)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(lod_cases); ++i)
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ASSERT_EQ(__gen_pack_lod(lod_cases[i].f, 0, 9), lod_cases[i].encoded);
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}
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TEST(LODClamp, Decode)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(lod_cases); ++i) {
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if (lod_cases[i].inexact)
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continue;
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uint8_t cl[4] = { 0 };
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memcpy(cl, &lod_cases[i].encoded, sizeof(lod_cases[i].encoded));
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ASSERT_EQ(__gen_unpack_lod(cl, 0, 10), lod_cases[i].f);
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}
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}
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TEST(Groups, Encode)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(group_cases); ++i) {
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ASSERT_EQ(__gen_to_groups(group_cases[i].value,
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group_cases[i].group_size,
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group_cases[i].length),
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group_cases[i].encoded);
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}
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}
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TEST(Groups, Decode)
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{
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for (unsigned i = 0; i < ARRAY_SIZE(group_cases); ++i) {
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unsigned expected = ALIGN_POT(group_cases[i].value,
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group_cases[i].group_size);
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/* Clamp to minimum encodable */
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if (group_cases[i].value == 0)
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expected = group_cases[i].group_size;
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ASSERT_EQ(__gen_from_groups(group_cases[i].encoded,
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group_cases[i].group_size,
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group_cases[i].length),
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expected);
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}
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}
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