e955c94ed3
Listing the "Blender Foundation" as copyright holder implied the Blender Foundation holds copyright to files which may include work from many developers. While keeping copyright on headers makes sense for isolated libraries, Blender's own code may be refactored or moved between files in a way that makes the per file copyright holders less meaningful. Copyright references to the "Blender Foundation" have been replaced with "Blender Authors", with the exception of `./extern/` since these this contains libraries which are more isolated, any changed to license headers there can be handled on a case-by-case basis. Some directories in `./intern/` have also been excluded: - `./intern/cycles/` it's own `AUTHORS` file is planned. - `./intern/opensubdiv/`. An "AUTHORS" file has been added, using the chromium projects authors file as a template. Design task: #110784 Ref !110783.
103 lines
3.9 KiB
C++
103 lines
3.9 KiB
C++
/* SPDX-FileCopyrightText: 2023 Blender Authors
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "testing/testing.h"
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#include "vk_data_conversion.hh"
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namespace blender::gpu::tests {
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static void test_f32_f16(uint32_t f32_in, uint32_t f16_expected)
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{
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const uint32_t f16 = convert_float_formats<FormatF16, FormatF32>(f32_in);
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EXPECT_EQ(f16, f16_expected);
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const uint32_t f32_reverse = convert_float_formats<FormatF32, FormatF16>(f16);
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EXPECT_EQ(f32_reverse, f32_in);
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}
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TEST(VulkanDataConversion, ConvertF32F16)
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{
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/* 0.0 */
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test_f32_f16(0b00000000000000000000000000000000, 0b0000000000000000);
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/* 0.125 */
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test_f32_f16(0b00111110000000000000000000000000, 0b0011000000000000);
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/* 2.0 */
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test_f32_f16(0b01000000000000000000000000000000, 0b0100000000000000);
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/* 3.0 */
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test_f32_f16(0b01000000010000000000000000000000, 0b0100001000000000);
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/* 4.0 */
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test_f32_f16(0b01000000100000000000000000000000, 0b0100010000000000);
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}
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TEST(VulkanDataConversion, clamp_negative_to_zero)
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{
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const uint32_t f32_2 = 0b11000000000000000000000000000000;
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const uint32_t f32_inf_min = 0b11111111100000000000000000000000;
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const uint32_t f32_inf_max = 0b01111111100000000000000000000000;
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const uint32_t f32_nan = 0b11111111111111111111111111111111;
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/* F32(-2) fits in F16. */
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const uint32_t f16_2_expected = 0b1100000000000000;
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const uint32_t f16_2a = convert_float_formats<FormatF16, FormatF32, true>(f32_2);
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EXPECT_EQ(f16_2a, f16_2_expected);
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const uint32_t f16_2b = convert_float_formats<FormatF16, FormatF32, false>(f32_2);
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EXPECT_EQ(f16_2b, f16_2_expected);
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/* F32(-2) doesn't fit in F11 as F11 only supports unsigned values. Clamp to zero. */
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const uint32_t f11_0_expected = 0b00000000000;
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const uint32_t f11_2_expected = 0b10000000000;
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const uint32_t f11_inf_expected = 0b11111000000;
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const uint32_t f11_nan_expected = 0b11111111111;
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{
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const uint32_t f11_0 = convert_float_formats<FormatF11, FormatF32, true>(f32_2);
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EXPECT_EQ(f11_0, f11_0_expected);
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const uint32_t f11_0b = convert_float_formats<FormatF11, FormatF32, true>(f32_inf_min);
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EXPECT_EQ(f11_0b, f11_0_expected);
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const uint32_t f11_inf = convert_float_formats<FormatF11, FormatF32, true>(f32_inf_max);
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EXPECT_EQ(f11_inf, f11_inf_expected);
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const uint32_t f11_nan = convert_float_formats<FormatF11, FormatF32, true>(f32_nan);
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EXPECT_EQ(f11_nan, f11_nan_expected);
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}
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/* F32(-2) doesn't fit in F11 as F11 only supports unsigned values. Make absolute. */
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{
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const uint32_t f11_2 = convert_float_formats<FormatF11, FormatF32, false>(f32_2);
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EXPECT_EQ(f11_2, f11_2_expected);
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const uint32_t f11_inf = convert_float_formats<FormatF11, FormatF32, false>(f32_inf_min);
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EXPECT_EQ(f11_inf, f11_inf_expected);
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const uint32_t f11_infb = convert_float_formats<FormatF11, FormatF32, false>(f32_inf_max);
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EXPECT_EQ(f11_infb, f11_inf_expected);
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const uint32_t f11_nan = convert_float_formats<FormatF11, FormatF32, false>(f32_nan);
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EXPECT_EQ(f11_nan, f11_nan_expected);
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}
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}
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TEST(VulkanDataConversion, infinity_upper)
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{
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const uint32_t f32_inf = 0b01111111100000000000000000000000;
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const uint32_t f16_inf_expected = 0b0111110000000000;
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const uint32_t f16_inf = convert_float_formats<FormatF16, FormatF32, true>(f32_inf);
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EXPECT_EQ(f16_inf, f16_inf_expected);
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const uint32_t f11_inf_expected = 0b11111000000;
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const uint32_t f11_inf = convert_float_formats<FormatF11, FormatF32, true>(f32_inf);
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EXPECT_EQ(f11_inf, f11_inf_expected);
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const uint32_t f10_inf_expected = 0b1111100000;
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const uint32_t f10_inf = convert_float_formats<FormatF10, FormatF32, true>(f32_inf);
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EXPECT_EQ(f10_inf, f10_inf_expected);
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}
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TEST(VulkanDataConversion, infinity_lower)
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{
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const uint32_t f32_inf = 0b11111111100000000000000000000000;
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const uint32_t f16_inf_expected = 0b1111110000000000;
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const uint32_t f16_inf = convert_float_formats<FormatF16, FormatF32, true>(f32_inf);
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EXPECT_EQ(f16_inf, f16_inf_expected);
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}
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} // namespace blender::gpu::tests
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