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Reenable openmp task dispatcher.

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This commit is contained in:
castano 2010-12-10 02:14:56 +00:00
parent 8d99f2c6c4
commit a607aadf32
2 changed files with 31 additions and 21 deletions
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16
src/nvtt/CompressorDXT.cpp
View File

@ -126,11 +126,14 @@ struct CompressorContext
}; };
// Each task compresses one row. // Each task compresses one row.
void CompressorTask(void * data, size_t y) void CompressorTask(void * data, size_t i)
{ {
CompressorContext * d = (CompressorContext *) data; CompressorContext * d = (CompressorContext *) data;
for (uint x = 0; x < d->bw; x++) uint x = i % d->bw;
uint y = i / d->bw;
//for (uint x = 0; x < d->bw; x++)
{ {
ColorBlock rgba; ColorBlock rgba;
rgba.init(d->w, d->h, d->data, 4*x, 4*y); rgba.init(d->w, d->h, d->data, 4*x, 4*y);
@ -156,10 +159,11 @@ void FixedBlockCompressor::compress(nvtt::AlphaMode alphaMode, uint w, uint h, c
context.compressor = this; context.compressor = this;
static SequentialTaskDispatcher sequential; static SequentialTaskDispatcher sequential;
//#static AppleTaskDispatcher concurrent; //static AppleTaskDispatcher concurrent;
static OpenMPTaskDispatcher concurrent;
TaskDispatcher * dispatcher = &sequential; //TaskDispatcher * dispatcher = &sequential;
//TaskDispatcher * dispatcher = &concurrent; TaskDispatcher * dispatcher = &concurrent;
// Use a single thread to compress small textures. // Use a single thread to compress small textures.
if (context.bh < 4) dispatcher = &sequential; if (context.bh < 4) dispatcher = &sequential;
@ -168,7 +172,7 @@ void FixedBlockCompressor::compress(nvtt::AlphaMode alphaMode, uint w, uint h, c
const uint size = context.bs * count; const uint size = context.bs * count;
context.mem = new uint8[size]; context.mem = new uint8[size];
dispatcher->dispatch(CompressorTask, &context, context.bh); dispatcher->dispatch(CompressorTask, &context, count);
outputOptions.writeData(context.mem, size); outputOptions.writeData(context.mem, size);

36
src/nvtt/TaskDispatcher.h
View File

@ -2,10 +2,13 @@
#include "nvtt.h" #include "nvtt.h"
// OpenMP // OpenMP
// http://en.wikipedia.org/wiki/OpenMP
#if defined(HAVE_OPENMP) #if defined(HAVE_OPENMP)
#include <omp.h> #include <omp.h>
#endif #endif
// Gran Central Dispatch (GCD/libdispatch)
// http://developer.apple.com/mac/library/documentation/Performance/Reference/GCD_libdispatch_Ref/Reference/reference.html
#if NV_OS_DARWIN && defined(HAVE_DISPATCH_H) #if NV_OS_DARWIN && defined(HAVE_DISPATCH_H)
#include <dispatch/dispatch.h> #include <dispatch/dispatch.h>
#endif #endif
@ -14,11 +17,15 @@
#define HAVE_PPL 1 #define HAVE_PPL 1
#endif #endif
// Parallel Patterns Library (PPL) is part of Microsoft's concurrency runtime:
// http://msdn.microsoft.com/en-us/library/dd504870.aspx
#if defined(HAVE_PPL) #if defined(HAVE_PPL)
#include <array> #include <array>
//#include <ppl.h> //#include <ppl.h>
#endif #endif
// Intel Thread Building Blocks (TBB).
// http://www.threadingbuildingblocks.org/
#if defined(HAVE_TBB) #if defined(HAVE_TBB)
#include <tbb/parallel_for.h> #include <tbb/parallel_for.h>
#endif #endif
@ -35,6 +42,20 @@ namespace nvtt {
} }
}; };
#if defined(HAVE_OPENMP)
struct OpenMPTaskDispatcher : public TaskDispatcher
{
virtual void dispatch(Task * task, void * context, size_t count) {
#pragma omp parallel for
for (int i = 0; i < int(count); i++) {
task(context, i);
}
}
};
#endif
#if NV_OS_DARWIN && defined(HAVE_DISPATCH_H) #if NV_OS_DARWIN && defined(HAVE_DISPATCH_H)
// Task dispatcher using Apple's Grand Central Dispatch. // Task dispatcher using Apple's Grand Central Dispatch.
@ -48,20 +69,6 @@ namespace nvtt {
#endif #endif
#if defined(HAVE_OPENMP)
struct OpenMPTaskDispatcher : public TaskDispatcher
{
virtual void dispatch(Task * task, void * context, size_t count) {
#pragma omp parallel for
for (size_t i = 0; i < count; i++) {
task(context, i);
}
}
};
#endif
#if defined(HAVE_PPL) #if defined(HAVE_PPL)
class CountingIterator class CountingIterator
@ -125,5 +132,4 @@ namespace nvtt {
#endif #endif
} // namespace nvtt } // namespace nvtt