mirror of
https://bitbucket.org/mfeemster/fractorium.git
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4a150132e1
-Improve performance in the following variations: cpow2, dc_cube, julia3d, julia3dz, julian2, log_db, nblur, npolar, waffle, wavesn, xtrb. --Code changes -Rand range now uses multiply + shift rather than modulo.
259 lines
7.2 KiB
C++
259 lines
7.2 KiB
C++
#pragma once
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#include "EmberCLPch.h"
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#include "EmberCLStructs.h"
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/// <summary>
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/// OpenCL global function strings.
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/// </summary>
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namespace EmberCLns
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{
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/// <summary>
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/// OpenCL equivalent of Palette::RgbToHsv().
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/// </summary>
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static const char* RgbToHsvFunctionString =
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//rgb 0 - 1,
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//h 0 - 6, s 0 - 1, v 0 - 1
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"static inline void RgbToHsv(real4_bucket* rgb, real4_bucket* hsv)\n"
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"{\n"
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" real_bucket_t max, min, del, rc, gc, bc;\n"
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"\n"
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//Compute maximum of r, g, b.
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" if ((*rgb).x >= (*rgb).y)\n"
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" {\n"
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" if ((*rgb).x >= (*rgb).z)\n"
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" max = (*rgb).x;\n"
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" else\n"
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" max = (*rgb).z;\n"
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" }\n"
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" else\n"
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" {\n"
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" if ((*rgb).y >= (*rgb).z)\n"
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" max = (*rgb).y;\n"
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" else\n"
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" max = (*rgb).z;\n"
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" }\n"
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"\n"
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//Compute minimum of r, g, b.
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" if ((*rgb).x <= (*rgb).y)\n"
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" {\n"
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" if ((*rgb).x <= (*rgb).z)\n"
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" min = (*rgb).x;\n"
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" else\n"
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" min = (*rgb).z;\n"
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" }\n"
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" else\n"
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" {\n"
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" if ((*rgb).y <= (*rgb).z)\n"
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" min = (*rgb).y;\n"
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" else\n"
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" min = (*rgb).z;\n"
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" }\n"
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"\n"
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" del = max - min;\n"
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" (*hsv).z = max;\n"
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"\n"
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" if (max != 0)\n"
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" (*hsv).y = del / max;\n"
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" else\n"
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" (*hsv).y = 0;\n"
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"\n"
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" (*hsv).x = 0;\n"
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" if ((*hsv).y != 0)\n"
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" {\n"
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" rc = (max - (*rgb).x) / del;\n"
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" gc = (max - (*rgb).y) / del;\n"
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" bc = (max - (*rgb).z) / del;\n"
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"\n"
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" if ((*rgb).x == max)\n"
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" (*hsv).x = bc - gc;\n"
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" else if ((*rgb).y == max)\n"
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" (*hsv).x = 2 + rc - bc;\n"
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" else if ((*rgb).z == max)\n"
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" (*hsv).x = 4 + gc - rc;\n"
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"\n"
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" if ((*hsv).x < 0)\n"
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" (*hsv).x += 6;\n"
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" }\n"
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"}\n"
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"\n";
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/// <summary>
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/// OpenCL equivalent of Palette::HsvToRgb().
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/// </summary>
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static const char* HsvToRgbFunctionString =
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//h 0 - 6, s 0 - 1, v 0 - 1
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//rgb 0 - 1
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"static inline void HsvToRgb(real4_bucket* hsv, real4_bucket* rgb)\n"
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"{\n"
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" int j;\n"
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" real_bucket_t f, p, q, t;\n"
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"\n"
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" while ((*hsv).x >= 6)\n"
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" (*hsv).x = (*hsv).x - 6;\n"
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"\n"
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" while ((*hsv).x < 0)\n"
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" (*hsv).x = (*hsv).x + 6;\n"
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"\n"
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" j = (int)floor((*hsv).x);\n"
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" f = (*hsv).x - j;\n"
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" p = (*hsv).z * (1 - (*hsv).y);\n"
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" q = (*hsv).z * (1 - ((*hsv).y * f));\n"
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" t = (*hsv).z * (1 - ((*hsv).y * (1 - f)));\n"
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"\n"
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" switch (j)\n"
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" {\n"
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" case 0: (*rgb).x = (*hsv).z; (*rgb).y = t; (*rgb).z = p; break;\n"
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" case 1: (*rgb).x = q; (*rgb).y = (*hsv).z; (*rgb).z = p; break;\n"
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" case 2: (*rgb).x = p; (*rgb).y = (*hsv).z; (*rgb).z = t; break;\n"
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" case 3: (*rgb).x = p; (*rgb).y = q; (*rgb).z = (*hsv).z; break;\n"
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" case 4: (*rgb).x = t; (*rgb).y = p; (*rgb).z = (*hsv).z; break;\n"
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" case 5: (*rgb).x = (*hsv).z; (*rgb).y = p; (*rgb).z = q; break;\n"
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" default: (*rgb).x = (*hsv).z; (*rgb).y = t; (*rgb).z = p; break;\n"
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" }\n"
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"}\n"
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"\n";
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/// <summary>
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/// OpenCL equivalent of Palette::CalcAlpha().
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/// </summary>
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static const char* CalcAlphaFunctionString =
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"static inline real_t CalcAlpha(real_bucket_t density, real_bucket_t gamma, real_bucket_t linrange)\n"//Not the slightest clue what this is doing.//DOC
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"{\n"
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" real_bucket_t frac, alpha, funcval = pow(linrange, gamma);\n"
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"\n"
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" if (density > 0)\n"
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" {\n"
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" if (density < linrange)\n"
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" {\n"
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" frac = density / linrange;\n"
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" alpha = (1.0 - frac) * density * (funcval / linrange) + frac * pow(density, gamma);\n"
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" }\n"
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" else\n"
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" alpha = pow(density, gamma);\n"
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" }\n"
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" else\n"
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" alpha = 0;\n"
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"\n"
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" return alpha;\n"
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"}\n"
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"\n";
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/// <summary>
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/// OpenCL equivalent of Renderer::CurveAdjust().
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/// Only use float here instead of real_t because the output will be passed to write_imagef()
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/// during final accumulation, which only takes floats.
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/// </summary>
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static const char* CurveAdjustFunctionString =
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"static inline void CurveAdjust(__global real4reals_bucket* csa, float* a, uint index)\n"
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"{\n"
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" uint tempIndex = (uint)clamp(*a * CURVES_LENGTH_M1, 0.0f, CURVES_LENGTH_M1);\n"
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" uint tempIndex2 = (uint)clamp(csa[tempIndex].m_Real4.x * CURVES_LENGTH_M1, 0.0f, CURVES_LENGTH_M1);\n"
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"\n"
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" *a = (float)csa[tempIndex2].m_Reals[index];\n"
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"}\n"
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"\n";
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/// <summary>
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/// Use MWC 64 from David Thomas at the Imperial College of London for
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/// random numbers in OpenCL, instead of ISAAC which was used
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/// for CPU rendering.
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/// </summary>
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static const char* RandFunctionString =
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"enum { MWC64X_A = 4294883355u };\n\n"
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"inline uint MwcNext(uint2* s)\n"
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"{\n"
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" uint res = (*s).x ^ (*s).y; \n"//Calculate the result.
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" uint hi = mul_hi((*s).x, MWC64X_A); \n"//Step the RNG.
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" (*s).x = (*s).x * MWC64X_A + (*s).y;\n"//Pack the state back up.
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" (*s).y = hi + ((*s).x < (*s).y); \n"
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" return res; \n"//Return the next result.
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"}\n"
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"\n"
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"inline uint MwcNextRange(uint2* s, uint val)\n"
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"{\n"
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" return (val == 0) ? MwcNext(s) : (uint)(((ulong)MwcNext(s) * (ulong)val) >> 32);\n"
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"}\n"
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"\n"
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"inline real_t MwcNext01(uint2* s)\n"
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"{\n"
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" return MwcNext(s) * (real_t)(1.0 / 4294967296.0);\n"
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"}\n"
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"\n"
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"inline real_t MwcNextFRange(uint2* s, real_t lower, real_t upper)\n"
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"{\n"
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" real_t f = (real_t)MwcNext(s) / (real_t)UINT_MAX;\n"
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" return fma(f, upper - lower, lower);\n"
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"}\n"
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"\n"
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"inline real_t MwcNextNeg1Pos1(uint2* s)\n"
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"{\n"
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" real_t f = (real_t)MwcNext(s) / (real_t)UINT_MAX;\n"
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" return fma(f, (real_t)2.0, (real_t)-1.0);\n"
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"}\n"
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"\n"
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"inline real_t MwcNext0505(uint2* s)\n"
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"{\n"
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" real_t f = (real_t)MwcNext(s) / (real_t)UINT_MAX;\n"
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" return -0.5 + f;\n"
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"}\n"
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"\n";
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/// <summary>
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/// OpenCL equivalent Renderer::AddToAccum().
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/// </summary>
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static const char* AddToAccumWithCheckFunctionString =
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"inline bool AccumCheck(int superRasW, int superRasH, int i, int ii, int j, int jj)\n"
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"{\n"
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" return (j + jj >= 0 && j + jj < superRasH && i + ii >= 0 && i + ii < superRasW);\n"
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"}\n"
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"\n";
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/// <summary>
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/// OpenCL equivalent various CarToRas member functions.
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/// Normaly would subtract m_RasLlX and m_RasLlY, but they were negated in RendererCL before being passed in, so they could be used with fma().
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/// </summary>
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static const char* CarToRasFunctionString =
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"inline void CarToRasConvertPointToSingle(__constant CarToRasCL* carToRas, Point* point, uint* singleBufferIndex)\n"
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"{\n"
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" *singleBufferIndex = (uint)fma(carToRas->m_PixPerImageUnitW, point->m_X, carToRas->m_RasLlX) + (carToRas->m_RasWidth * (uint)fma(carToRas->m_PixPerImageUnitH, point->m_Y, carToRas->m_RasLlY));\n"
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"}\n"
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"\n"
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"inline bool CarToRasInBounds(__constant CarToRasCL* carToRas, Point* point)\n"
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"{\n"
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" return point->m_X >= carToRas->m_CarLlX &&\n"
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" point->m_X < carToRas->m_CarUrX &&\n"
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" point->m_Y < carToRas->m_CarUrY &&\n"
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" point->m_Y >= carToRas->m_CarLlY;\n"
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"}\n"
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"\n";
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static string AtomicString()
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{
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ostringstream os;
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os <<
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"void AtomicAdd(volatile __global real_bucket_t* source, const real_bucket_t operand)\n"
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"{\n"
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" union\n"
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" {\n"
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" atomi intVal;\n"
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" real_bucket_t realVal;\n"
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" } newVal;\n"
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"\n"
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" union\n"
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" {\n"
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" atomi intVal;\n"
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" real_bucket_t realVal;\n"
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" } prevVal;\n"
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"\n"
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" do\n"
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" {\n"
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" prevVal.realVal = *source;\n"
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" newVal.realVal = prevVal.realVal + operand;\n"
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" } while (atomic_cmpxchg((volatile __global atomi*)source, prevVal.intVal, newVal.intVal) != prevVal.intVal);\n"
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"}\n";
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return os.str();
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}
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} |