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Add some timing ability.

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Unknown W. Brackets 2015-07-03 15:44:41 -07:00
parent 808db2482a
commit 14885182b9
1 changed files with 55 additions and 14 deletions
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69
unittest/TestVertexJit.cpp
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@ -15,6 +15,7 @@
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include "base/timeutil.h"
#include "Common/Common.h"
#include "Core/Config.h"
#include "GPU/Common/VertexDecoderCommon.h"
@ -22,14 +23,13 @@
#include "unittest/TestVertexJit.h"
#include "unittest/UnitTest.h"
#pragma optimize("", off)
class VertexDecoderTestHarness {
static const int BUFFER_SIZE = 64 * 65536;
static const int ROUNDS = 200;
public:
VertexDecoderTestHarness()
: needsReset_(true), dstPos_(0) {
: dec_(nullptr), needsReset_(true), dstPos_(0) {
src_ = new u8[BUFFER_SIZE];
dst_ = new u8[BUFFER_SIZE];
cache_ = new VertexDecoderJitCache();
@ -40,12 +40,15 @@ public:
delete src_;
delete dst_;
delete cache_;
delete dec_;
}
void Reset() {
memset(src_, 0, BUFFER_SIZE);
memset(dst_, 0, BUFFER_SIZE);
memset(&options_, 0, sizeof(options_));
delete dec_;
dec_ = nullptr;
indexLowerBound_ = 0;
indexUpperBound_ = 0;
srcPos_ = 0;
@ -68,16 +71,25 @@ public:
}
void Execute(int vtype, int indexUpperBound, bool useJit) {
if (needsReset_) {
Reset();
}
SetupExecute(vtype, useJit);
VertexDecoder *dec = new VertexDecoder();
dec->SetVertexType(vtype, options_, useJit ? cache_ : nullptr);
dec->DecodeVerts(dst_, src_, indexLowerBound_, indexUpperBound);
delete dec;
dec_->DecodeVerts(dst_, src_, indexLowerBound_, indexUpperBound);
}
needsReset_ = true;
double ExecuteTimed(int vtype, int indexUpperBound, bool useJit) {
SetupExecute(vtype, useJit);
int total = 0;
double st = real_time_now();
do {
for (int j = 0; j < ROUNDS; ++j) {
dec_->DecodeVerts(dst_, src_, indexLowerBound_, indexUpperBound);
++total;
}
} while (real_time_now() - st < 0.5);
double elapsed = real_time_now() - st;
return total / elapsed;
}
void Add8(u8 x) {
@ -149,11 +161,33 @@ public:
return result;
}
void *GetData() {
return dst_;
}
int GetDstStride() {
if (dec_) {
return dec_->decFmt.stride;
}
return 0;
}
private:
void SetupExecute(int vtype, bool useJit) {
if (dec_ != nullptr) {
delete dec_;
}
dec_ = new VertexDecoder();
dec_->SetVertexType(vtype, options_, useJit ? cache_ : nullptr);
needsReset_ = true;
}
u8 *src_;
u8 *dst_;
VertexDecoderJitCache *cache_;
VertexDecoderOptions options_;
VertexDecoder *dec_;
int indexLowerBound_;
int indexUpperBound_;
bool needsReset_;
@ -163,8 +197,15 @@ private:
bool TestVertexJit() {
VertexDecoderTestHarness dec;
dec.AddFloat(1.0f, 1.0f, 1.0f);
dec.Execute(GE_VTYPE_POS_FLOAT, 1, true);
for (int i = 0; i < 100; ++i) {
dec.AddFloat(0.5f, 1.0f, -1.0f);
}
int vtype = GE_VTYPE_POS_FLOAT;
double yesJit = dec.ExecuteTimed(vtype, 100, true);
double noJit = dec.ExecuteTimed(vtype, 100, false);
printf("Result: %f, %f, %f\n", dec.GetFloat(), dec.GetFloat(), dec.GetFloat());
return true;
printf("Jit was %fx faster than steps.\n\n", yesJit / noJit);
return yesJit > noJit;
}