mirror of
https://github.com/blawar/GLideN64.git
synced 2024-07-04 10:03:36 +00:00
Use threads to generate noise textures data.
This commit is contained in:
parent
3da71d1fc4
commit
8d9b44b90f
|
@ -1,3 +1,9 @@
|
|||
#include <thread>
|
||||
#include <array>
|
||||
#include <algorithm>
|
||||
#include <random>
|
||||
#include <functional>
|
||||
#include <cstdlib>
|
||||
#include <Graphics/Context.h>
|
||||
#include <Graphics/Parameters.h>
|
||||
#include "FrameBuffer.h"
|
||||
|
@ -7,10 +13,12 @@
|
|||
#include "Textures.h"
|
||||
#include "NoiseTexture.h"
|
||||
#include "DisplayWindow.h"
|
||||
#include <cstdlib>
|
||||
|
||||
using namespace graphics;
|
||||
|
||||
#define NOISE_TEX_WIDTH 640
|
||||
#define NOISE_TEX_HEIHT 580
|
||||
|
||||
NoiseTexture g_noiseTexture;
|
||||
|
||||
NoiseTexture::NoiseTexture()
|
||||
|
@ -18,12 +26,54 @@ NoiseTexture::NoiseTexture()
|
|||
{
|
||||
}
|
||||
|
||||
typedef std::array<std::vector<u16>, NOISE_TEX_NUM> NoiseTexturesData;
|
||||
|
||||
static
|
||||
void FillTextureData(u32 _seed, NoiseTexturesData * _pData, u32 _start, u32 _stop)
|
||||
{
|
||||
srand(_seed);
|
||||
for (u32 i = _start; i < _stop; ++i) {
|
||||
auto & vec = _pData->at(i);
|
||||
const size_t sz = vec.size();
|
||||
for (size_t t = 0; t < sz; ++t)
|
||||
vec[t] = rand() & 0xFFFF;
|
||||
}
|
||||
}
|
||||
|
||||
void NoiseTexture::init()
|
||||
{
|
||||
if (config.generalEmulation.enableNoise == 0)
|
||||
return;
|
||||
|
||||
std::vector<u16> ptr(640 * 580 / 2);
|
||||
NoiseTexturesData texData;
|
||||
for (auto& vec : texData)
|
||||
vec.resize(NOISE_TEX_WIDTH * NOISE_TEX_HEIHT / 2);
|
||||
|
||||
const u32 concurentThreadsSupported = std::thread::hardware_concurrency();
|
||||
if (concurentThreadsSupported > 2) {
|
||||
const u32 numThreads = concurentThreadsSupported - 1;
|
||||
u32 chunk = NOISE_TEX_NUM / numThreads;
|
||||
if (NOISE_TEX_NUM % numThreads != 0)
|
||||
chunk++;
|
||||
|
||||
std::uniform_int_distribution<u32> uint_dist;
|
||||
std::mt19937 engine; // Mersenne twister MT19937
|
||||
engine.seed(std::mt19937::default_seed);
|
||||
auto generator = std::bind(uint_dist, engine);
|
||||
|
||||
std::vector<std::thread> threads;
|
||||
u32 start = 0;
|
||||
do {
|
||||
threads.emplace_back(
|
||||
FillTextureData, generator(), &texData, start, std::min(start + chunk, texData.size()));
|
||||
start += chunk;
|
||||
} while (start < NOISE_TEX_NUM);
|
||||
|
||||
for (auto& t : threads)
|
||||
t.join();
|
||||
} else {
|
||||
FillTextureData(static_cast<u32>(time(nullptr)), &texData, 0, texData.size());
|
||||
}
|
||||
|
||||
for (u32 i = 0; i < NOISE_TEX_NUM; ++i) {
|
||||
m_pTexture[i] = textureCache().addFrameBufferTexture(false);
|
||||
|
@ -35,8 +85,8 @@ void NoiseTexture::init()
|
|||
m_pTexture[i]->maskT = 0;
|
||||
m_pTexture[i]->mirrorS = 0;
|
||||
m_pTexture[i]->mirrorT = 0;
|
||||
m_pTexture[i]->realWidth = 640;
|
||||
m_pTexture[i]->realHeight = 580;
|
||||
m_pTexture[i]->realWidth = NOISE_TEX_WIDTH;
|
||||
m_pTexture[i]->realHeight = NOISE_TEX_HEIHT;
|
||||
m_pTexture[i]->textureBytes = m_pTexture[i]->realWidth * m_pTexture[i]->realHeight;
|
||||
textureCache().addFrameBufferTextureSize(m_pTexture[i]->textureBytes);
|
||||
|
||||
|
@ -60,11 +110,6 @@ void NoiseTexture::init()
|
|||
params.magFilter = textureParameters::FILTER_NEAREST;
|
||||
gfxContext.setTextureParameters(params);
|
||||
}
|
||||
const u32 widthWords = m_pTexture[i]->realWidth / 2;
|
||||
for (u32 y = 0; y < m_pTexture[i]->realHeight; ++y) {
|
||||
for (u32 x = 0; x < widthWords; ++x)
|
||||
ptr[x + y*widthWords] = rand() & 0xFFFF;
|
||||
}
|
||||
{
|
||||
Context::UpdateTextureDataParams params;
|
||||
params.handle = m_pTexture[i]->name;
|
||||
|
@ -73,7 +118,7 @@ void NoiseTexture::init()
|
|||
params.height = m_pTexture[i]->realHeight;
|
||||
params.format = fbTexFormats.noiseFormat;
|
||||
params.dataType = fbTexFormats.noiseType;
|
||||
params.data = ptr.data();
|
||||
params.data = texData[i].data();
|
||||
gfxContext.update2DTexture(params);
|
||||
}
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue
Block a user