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https://github.com/holub/mame
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0837e7451a
* Sync with bgfx upstream revision b91d0b6 * Sync with bx upstream revision d60912b * Sync with bimg upstream revision bd81f60 * Add astc-codec decoder * Rename VertexDecl to VertexLayout * Rename UniformType enum Int1 to Sampler. * Add NVN stub * Fix unused-const-variable error on macOS * Drop redundant explicit language parameters buildoptions_cpp are only applied to c++ files and buildoptions_objcpp are only applied to objective c++ files. As such, hardcoding -x offers no benefit while preventing overrides (such as one needed by 3rdparty/bgfx/src/renderer_vk.cpp on macOS) from working. * Re-introduce -x c++ in places where C code is compiled as C++ to prevent clang from throwing a warning * Build bgfx as Objective-C++ on macOS It is needed due to included headers * Enable Direct3D12 and Vulkan bgfx rendering backends * Enable building of spirv shaders * Properly escape /c in cmd call * Comment out dx12 bgfx renderer * Honor VERBOSE setting during shaders build * Only invert hlsl shader XYZ_TO_sRGB matrix for opengl * Add spirv shaders * OpenGL ES needs transposed matrix too * Metal needs transposed matrix as well
91 lines
2.0 KiB
C++
91 lines
2.0 KiB
C++
/*
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* Copyright 2010-2019 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bx#license-bsd-2-clause
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*/
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#include "test.h"
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#include <bx/rng.h>
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#include <bx/file.h>
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const uint32_t kMax = 10<<20;
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template<typename Ty>
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void testRng(const char* _name, Ty* _rng)
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{
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uint32_t histBits[32];
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uint32_t histUint8[256];
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bx::memSet(histBits, 0, sizeof(histBits) );
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bx::memSet(histUint8, 0, sizeof(histUint8) );
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for (uint32_t ii = 0; ii < kMax; ++ii)
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{
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uint32_t val = _rng->gen();
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for (uint32_t shift = 0; shift < 32; ++shift)
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{
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const uint32_t mask = 1<<shift;
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histBits[shift] += !!(0 != (val & mask) );
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}
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const uint32_t mf000 = (val & 0xff000000)>>24;
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const uint32_t m0f00 = (val & 0x00ff0000)>>16;
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const uint32_t m00f0 = (val & 0x0000ff00)>> 8;
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const uint32_t m000f = (val & 0x000000ff)>> 0;
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histUint8[mf000]++;
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histUint8[m0f00]++;
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histUint8[m00f0]++;
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histUint8[m000f]++;
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}
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bx::WriterI* writer = bx::getNullOut();
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bx::Error err;
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bx::write(writer, &err, "%s\n", _name);
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{
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bx::write(writer, &err, "\tbits histogram:\n");
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uint32_t min = UINT32_MAX;
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uint32_t max = 0;
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for (uint32_t ii = 0; ii < BX_COUNTOF(histBits); ++ii)
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{
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bx::write(writer, &err, "\t\t%3d: %d\n", ii, histBits[ii]);
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min = bx::min(min, histBits[ii]);
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max = bx::max(max, histBits[ii]);
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}
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bx::write(writer, &err, "\tmin: %d, max: %d (diff: %d)\n", min, max, max-min);
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REQUIRE(max-min < 8000);
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}
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{
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bx::write(writer, &err, "\tuint8_t histogram:\n");
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uint32_t min = UINT32_MAX;
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uint32_t max = 0;
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for (uint32_t ii = 0; ii < BX_COUNTOF(histUint8); ++ii)
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{
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bx::write(writer, &err, "\t\t%3d: %d\n", ii, histUint8[ii]);
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min = bx::min(min, histUint8[ii]);
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max = bx::max(max, histUint8[ii]);
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}
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bx::write(writer, &err, "\tmin: %d, max: %d (diff: %d)\n", min, max, max-min);
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REQUIRE(max-min < 8000);
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}
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}
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TEST_CASE("Rng", "")
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{
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bx::RngMwc mwc;
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testRng("RngMwc", &mwc);
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bx::RngShr3 shr3;
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testRng("RngShr3", &shr3);
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}
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