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17-drawstress: Added use of encoder.

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This commit is contained in:
Branimir Karadžić
2017-11-04 15:34:11 -07:00
parent d97023ab85
commit df69aea77e
1 changed files with 138 additions and 42 deletions
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180
examples/17-drawstress/drawstress.cpp
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@@ -7,6 +7,8 @@
#include "bgfx_utils.h"
#include <bx/uint32_t.h>
#include <bx/thread.h>
#include <bx/os.h>
#include "imgui/imgui.h"
#include <bgfx/embedded_shader.h>
@@ -75,6 +77,16 @@ static const uint16_t s_cubeIndices[36] =
6, 3, 7,
};
static const float s_mod[6][3] =
{
{ 1.0f, 1.0f, 1.0f },
{ 1.0f, 0.0f, 0.0f },
{ 0.0f, 1.0f, 0.0f },
{ 0.0f, 0.0f, 1.0f },
{ 1.0f, 1.0f, 0.0f },
{ 0.0f, 1.0f, 1.0f },
};
#if BX_PLATFORM_EMSCRIPTEN
static const int64_t highwm = 1000000/35;
static const int64_t lowwm = 1000000/27;
@@ -83,6 +95,8 @@ static const int64_t highwm = 1000000/65;
static const int64_t lowwm = 1000000/57;
#endif // BX_PLATFORM_EMSCRIPTEN
int32_t threadFunc(bx::Thread* _thread, void* _userData);
class ExampleDrawStress : public entry::AppI
{
public:
@@ -152,10 +166,23 @@ public:
// Imgui.
imguiCreate();
m_numThreads = (BX_COUNTOF(m_thread)+1)/2;
for (uint32_t ii = 0; ii < BX_COUNTOF(m_thread); ++ii)
{
m_thread[ii].init(threadFunc, this);
}
}
int shutdown() override
{
for (uint32_t ii = 0; ii < BX_COUNTOF(m_thread); ++ii)
{
m_thread[ii].push(reinterpret_cast<void*>(UINTPTR_MAX) );
m_thread[ii].shutdown();
}
// Cleanup.
imguiDestroy();
bgfx::destroy(m_ibh);
@@ -168,6 +195,93 @@ public:
return 0;
}
int32_t thread(bx::Thread* _thread)
{
for (;;)
{
union
{
void* ptr;
uintptr_t id;
} cast;
cast.ptr = _thread->pop();
if (UINTPTR_MAX == cast.id)
{
break;
}
const uint32_t numThreads = uint32_t(cast.id);
const uint32_t idx = uint32_t(_thread - m_thread);
const uint32_t num = uint32_t(m_dim)/numThreads;
const uint32_t rem = idx == numThreads-1 ? uint32_t(m_dim)%numThreads : 0;
const uint32_t xx = idx*num;
submit(idx+1, xx, num + rem);
}
return bx::kExitSuccess;
}
void submit(uint32_t _tid, uint32_t _xstart, uint32_t _num)
{
bgfx::Encoder* encoder = bgfx::begin();
if (0 != _tid)
{
m_sync.post();
}
if (NULL != encoder)
{
const int64_t now = bx::getHPCounter();
const double freq = double(bx::getHPFrequency() );
float time = (float)( (now-m_timeOffset)/freq);
const float* mod = s_mod[_tid%BX_COUNTOF(s_mod)];
float mtxS[16];
const float scale = 0 == m_transform ? 0.25f : 0.0f;
bx::mtxScale(mtxS, scale, scale, scale);
const float step = 0.6f;
float pos[3];
pos[0] = -step*m_dim / 2.0f;
pos[1] = -step*m_dim / 2.0f;
pos[2] = -15.0;
for (uint32_t zz = 0; zz < uint32_t(m_dim); ++zz)
{
for (uint32_t yy = 0; yy < uint32_t(m_dim); ++yy)
{
for (uint32_t xx = _xstart, xend = _xstart+_num; xx < xend; ++xx)
{
float mtxR[16];
bx::mtxRotateXYZ(mtxR
, (time + xx*0.21f)*mod[0]
, (time + yy*0.37f)*mod[1]
, (time + zz*0.13f)*mod[2]
);
float mtx[16];
bx::mtxMul(mtx, mtxS, mtxR);
mtx[12] = pos[0] + float(xx)*step;
mtx[13] = pos[1] + float(yy)*step;
mtx[14] = pos[2] + float(zz)*step;
encoder->setTransform(mtx);
encoder->setVertexBuffer(0, m_vbh);
encoder->setIndexBuffer(m_ibh);
encoder->setState(BGFX_STATE_DEFAULT);
encoder->submit(0, m_program);
}
}
}
bgfx::end(encoder);
}
}
bool update() override
{
if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
@@ -206,8 +320,6 @@ public:
++m_numFrames;
}
float time = (float)( (now-m_timeOffset)/freq);
imguiBeginFrame(m_mouseState.m_mx
, m_mouseState.m_my
, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
@@ -234,6 +346,9 @@ public:
ImGui::Checkbox("Auto adjust", &m_autoAdjust);
ImGui::SliderInt("Num threads", &m_numThreads, 1, BX_COUNTOF(m_thread) );
const uint32_t numThreads = m_numThreads;
ImGui::SliderInt("Dim", &m_dim, 5, m_maxDim);
ImGui::Text("Draw calls: %d", m_dim*m_dim*m_dim);
ImGui::Text("Avg Delta Time (1 second) [ms]: %0.4f", m_deltaTimeAvgNs/1000.0f);
@@ -269,51 +384,22 @@ public:
// if no other draw calls are submitted to view 0.
bgfx::touch(0);
float mtxS[16];
const float scale = 0 == m_transform ? 0.25f : 0.0f;
bx::mtxScale(mtxS, scale, scale, scale);
const float step = 0.6f;
float pos[3];
pos[0] = -step*m_dim / 2.0f;
pos[1] = -step*m_dim / 2.0f;
pos[2] = -15.0;
bgfx::Encoder* encoder = bgfx::begin();
for (uint32_t zz = 0; zz < uint32_t(m_dim); ++zz)
if (1 < numThreads)
{
for (uint32_t yy = 0; yy < uint32_t(m_dim); ++yy)
for (uint32_t ii = 0; ii < numThreads; ++ii)
{
for (uint32_t xx = 0; xx < uint32_t(m_dim); ++xx)
{
float mtxR[16];
bx::mtxRotateXYZ(mtxR, time + xx*0.21f, time + yy*0.37f, time + yy*0.13f);
m_thread[ii].push(reinterpret_cast<void*>(uintptr_t(numThreads) ) );
}
float mtx[16];
bx::mtxMul(mtx, mtxS, mtxR);
mtx[12] = pos[0] + float(xx)*step;
mtx[13] = pos[1] + float(yy)*step;
mtx[14] = pos[2] + float(zz)*step;
// Set model matrix for rendering.
encoder->setTransform(mtx);
// Set vertex and index buffer.
encoder->setVertexBuffer(0, m_vbh);
encoder->setIndexBuffer(m_ibh);
// Set render states.
encoder->setState(BGFX_STATE_DEFAULT);
// Submit primitive for rendering to view 0.
encoder->submit(0, m_program);
}
for (uint32_t ii = 0; ii < numThreads; ++ii)
{
m_sync.wait();
}
}
bgfx::end(encoder);
else
{
submit(0, 0, uint32_t(m_dim) );
}
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
@@ -337,6 +423,7 @@ public:
int32_t m_dim;
int32_t m_maxDim;
int32_t m_transform;
int32_t m_numThreads;
int64_t m_timeOffset;
@@ -344,11 +431,20 @@ public:
int64_t m_deltaTimeAvgNs;
int64_t m_numFrames;
bx::Thread m_thread[5];
bx::Semaphore m_sync;
bgfx::ProgramHandle m_program;
bgfx::VertexBufferHandle m_vbh;
bgfx::IndexBufferHandle m_ibh;
};
int32_t threadFunc(bx::Thread* _thread, void* _userData)
{
ExampleDrawStress* self = static_cast<ExampleDrawStress*>(_userData);
return self->thread(_thread);
}
} // namespace
ENTRY_IMPLEMENT_MAIN(ExampleDrawStress, "17-drawstress", "Draw stress, maximizing number of draw calls.");