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Diffstat (limited to '3rdparty/bgfx/examples/05-instancing/instancing.cpp')
-rw-r--r--3rdparty/bgfx/examples/05-instancing/instancing.cpp287
1 files changed, 156 insertions, 131 deletions
diff --git a/3rdparty/bgfx/examples/05-instancing/instancing.cpp b/3rdparty/bgfx/examples/05-instancing/instancing.cpp
index f0a62ea1039..6e854b20785 100644
--- a/3rdparty/bgfx/examples/05-instancing/instancing.cpp
+++ b/3rdparty/bgfx/examples/05-instancing/instancing.cpp
@@ -55,171 +55,196 @@ static const uint16_t s_cubeIndices[36] =
6, 3, 7,
};
-int _main_(int _argc, char** _argv)
+class ExampleInstancing : public entry::AppI
{
- Args args(_argc, _argv);
+ void init(int _argc, char** _argv) BX_OVERRIDE
+ {
+ Args args(_argc, _argv);
- uint32_t width = 1280;
- uint32_t height = 720;
- uint32_t debug = BGFX_DEBUG_TEXT;
- uint32_t reset = BGFX_RESET_VSYNC;
+ m_width = 1280;
+ m_height = 720;
+ m_debug = BGFX_DEBUG_TEXT;
+ m_reset = BGFX_RESET_VSYNC;
- bgfx::init(args.m_type, args.m_pciId);
- bgfx::reset(width, height, reset);
+ bgfx::init(args.m_type, args.m_pciId);
+ bgfx::reset(m_width, m_height, m_reset);
- // Enable debug text.
- bgfx::setDebug(debug);
+ // Enable debug text.
+ bgfx::setDebug(m_debug);
- // Set view 0 clear state.
- bgfx::setViewClear(0
- , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
- , 0x303030ff
- , 1.0f
- , 0
- );
+ // Set view 0 clear state.
+ bgfx::setViewClear(0
+ , BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
+ , 0x303030ff
+ , 1.0f
+ , 0
+ );
- // Get renderer capabilities info.
- const bgfx::Caps* caps = bgfx::getCaps();
+ // Create vertex stream declaration.
+ PosColorVertex::init();
- // Create vertex stream declaration.
- PosColorVertex::init();
+ // Create static vertex buffer.
+ m_vbh = bgfx::createVertexBuffer(
+ bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) )
+ , PosColorVertex::ms_decl
+ );
- const bgfx::Memory* mem;
+ // Create static index buffer.
+ m_ibh = bgfx::createIndexBuffer(
+ bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) )
+ );
- // Create static vertex buffer.
- mem = bgfx::makeRef(s_cubeVertices, sizeof(s_cubeVertices) );
- bgfx::VertexBufferHandle vbh = bgfx::createVertexBuffer(mem, PosColorVertex::ms_decl);
+ // Create program from shaders.
+ m_program = loadProgram("vs_instancing", "fs_instancing");
- // Create static index buffer.
- mem = bgfx::makeRef(s_cubeIndices, sizeof(s_cubeIndices) );
- bgfx::IndexBufferHandle ibh = bgfx::createIndexBuffer(mem);
+ m_timeOffset = bx::getHPCounter();
+ }
- // Create program from shaders.
- bgfx::ProgramHandle program = loadProgram("vs_instancing", "fs_instancing");
+ int shutdown() BX_OVERRIDE
+ {
+ // Cleanup.
+ bgfx::destroyIndexBuffer(m_ibh);
+ bgfx::destroyVertexBuffer(m_vbh);
+ bgfx::destroyProgram(m_program);
- int64_t timeOffset = bx::getHPCounter();
+ // Shutdown bgfx.
+ bgfx::shutdown();
- while (!entry::processEvents(width, height, debug, reset) )
+ return 0;
+ }
+
+ bool update() BX_OVERRIDE
{
- // Set view 0 default viewport.
- bgfx::setViewRect(0, 0, 0, width, height);
-
- // This dummy draw call is here to make sure that view 0 is cleared
- // if no other draw calls are submitted to view 0.
- bgfx::touch(0);
-
- int64_t now = bx::getHPCounter();
- static int64_t last = now;
- const int64_t frameTime = now - last;
- last = now;
- const double freq = double(bx::getHPFrequency() );
- const double toMs = 1000.0/freq;
- float time = (float)( (now - timeOffset)/double(bx::getHPFrequency() ) );
-
- // Use debug font to print information about this example.
- bgfx::dbgTextClear();
- bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/05-instancing");
- bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Geometry instancing.");
- bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
-
- // Check if instancing is supported.
- if (0 == (BGFX_CAPS_INSTANCING & caps->supported) )
- {
- // When instancing is not supported by GPU, implement alternative
- // code path that doesn't use instancing.
- bool blink = uint32_t(time*3.0f)&1;
- bgfx::dbgTextPrintf(0, 5, blink ? 0x1f : 0x01, " Instancing is not supported by GPU. ");
- }
- else
+ if (!entry::processEvents(m_width, m_height, m_debug, m_reset) )
{
- float at[3] = { 0.0f, 0.0f, 0.0f };
- float eye[3] = { 0.0f, 0.0f, -35.0f };
-
- // Set view and projection matrix for view 0.
- const bgfx::HMD* hmd = bgfx::getHMD();
- if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
+ // Set view 0 default viewport.
+ bgfx::setViewRect(0, 0, 0, m_width, m_height);
+
+ // This dummy draw call is here to make sure that view 0 is cleared
+ // if no other draw calls are submitted to view 0.
+ bgfx::touch(0);
+
+ int64_t now = bx::getHPCounter();
+ static int64_t last = now;
+ const int64_t frameTime = now - last;
+ last = now;
+ const double freq = double(bx::getHPFrequency() );
+ const double toMs = 1000.0/freq;
+ float time = (float)( (now - m_timeOffset)/double(bx::getHPFrequency() ) );
+
+ // Use debug font to print information about this example.
+ bgfx::dbgTextClear();
+ bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/05-instancing");
+ bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Geometry instancing.");
+ bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
+
+ // Get renderer capabilities info.
+ const bgfx::Caps* caps = bgfx::getCaps();
+
+ // Check if instancing is supported.
+ if (0 == (BGFX_CAPS_INSTANCING & caps->supported) )
{
- float view[16];
- bx::mtxQuatTranslationHMD(view, hmd->eye[0].rotation, eye);
-
- float proj[16];
- bx::mtxProj(proj, hmd->eye[0].fov, 0.1f, 100.0f);
-
- bgfx::setViewTransform(0, view, proj);
-
- // Set view 0 default viewport.
- //
- // Use HMD's width/height since HMD's internal frame buffer size
- // might be much larger than window size.
- bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
+ // When instancing is not supported by GPU, implement alternative
+ // code path that doesn't use instancing.
+ bool blink = uint32_t(time*3.0f)&1;
+ bgfx::dbgTextPrintf(0, 5, blink ? 0x1f : 0x01, " Instancing is not supported by GPU. ");
}
else
{
- float view[16];
- bx::mtxLookAt(view, eye, at);
+ float at[3] = { 0.0f, 0.0f, 0.0f };
+ float eye[3] = { 0.0f, 0.0f, -35.0f };
- float proj[16];
- bx::mtxProj(proj, 60.0f, float(width)/float(height), 0.1f, 100.0f);
- bgfx::setViewTransform(0, view, proj);
+ // Set view and projection matrix for view 0.
+ const bgfx::HMD* hmd = bgfx::getHMD();
+ if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
+ {
+ float view[16];
+ bx::mtxQuatTranslationHMD(view, hmd->eye[0].rotation, eye);
- // Set view 0 default viewport.
- bgfx::setViewRect(0, 0, 0, width, height);
- }
+ float proj[16];
+ bx::mtxProj(proj, hmd->eye[0].fov, 0.1f, 100.0f);
- const uint16_t instanceStride = 80;
- const bgfx::InstanceDataBuffer* idb = bgfx::allocInstanceDataBuffer(121, instanceStride);
- if (NULL != idb)
- {
- uint8_t* data = idb->data;
+ bgfx::setViewTransform(0, view, proj);
+
+ // Set view 0 default viewport.
+ //
+ // Use HMD's width/height since HMD's internal frame buffer size
+ // might be much larger than window size.
+ bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
+ }
+ else
+ {
+ float view[16];
+ bx::mtxLookAt(view, eye, at);
+
+ float proj[16];
+ bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f);
+ bgfx::setViewTransform(0, view, proj);
+
+ // Set view 0 default viewport.
+ bgfx::setViewRect(0, 0, 0, m_width, m_height);
+ }
- // Write instance data for 11x11 cubes.
- for (uint32_t yy = 0, numInstances = 0; yy < 11 && numInstances < idb->num; ++yy)
+ const uint16_t instanceStride = 80;
+ const bgfx::InstanceDataBuffer* idb = bgfx::allocInstanceDataBuffer(121, instanceStride);
+ if (NULL != idb)
{
- for (uint32_t xx = 0; xx < 11 && numInstances < idb->num; ++xx, ++numInstances)
+ uint8_t* data = idb->data;
+
+ // Write instance data for 11x11 cubes.
+ for (uint32_t yy = 0, numInstances = 0; yy < 11 && numInstances < idb->num; ++yy)
{
- float* mtx = (float*)data;
- bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
- mtx[12] = -15.0f + float(xx)*3.0f;
- mtx[13] = -15.0f + float(yy)*3.0f;
- mtx[14] = 0.0f;
-
- float* color = (float*)&data[64];
- color[0] = sinf(time+float(xx)/11.0f)*0.5f+0.5f;
- color[1] = cosf(time+float(yy)/11.0f)*0.5f+0.5f;
- color[2] = sinf(time*3.0f)*0.5f+0.5f;
- color[3] = 1.0f;
-
- data += instanceStride;
+ for (uint32_t xx = 0; xx < 11 && numInstances < idb->num; ++xx, ++numInstances)
+ {
+ float* mtx = (float*)data;
+ bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
+ mtx[12] = -15.0f + float(xx)*3.0f;
+ mtx[13] = -15.0f + float(yy)*3.0f;
+ mtx[14] = 0.0f;
+
+ float* color = (float*)&data[64];
+ color[0] = sinf(time+float(xx)/11.0f)*0.5f+0.5f;
+ color[1] = cosf(time+float(yy)/11.0f)*0.5f+0.5f;
+ color[2] = sinf(time*3.0f)*0.5f+0.5f;
+ color[3] = 1.0f;
+
+ data += instanceStride;
+ }
}
- }
- // Set vertex and index buffer.
- bgfx::setVertexBuffer(vbh);
- bgfx::setIndexBuffer(ibh);
+ // Set vertex and index buffer.
+ bgfx::setVertexBuffer(m_vbh);
+ bgfx::setIndexBuffer(m_ibh);
- // Set instance data buffer.
- bgfx::setInstanceDataBuffer(idb);
+ // Set instance data buffer.
+ bgfx::setInstanceDataBuffer(idb);
- // Set render states.
- bgfx::setState(BGFX_STATE_DEFAULT);
+ // Set render states.
+ bgfx::setState(BGFX_STATE_DEFAULT);
- // Submit primitive for rendering to view 0.
- bgfx::submit(0, program);
+ // Submit primitive for rendering to view 0.
+ bgfx::submit(0, m_program);
+ }
}
+
+ // Advance to next frame. Rendering thread will be kicked to
+ // process submitted rendering primitives.
+ bgfx::frame();
+ return true;
}
- // Advance to next frame. Rendering thread will be kicked to
- // process submitted rendering primitives.
- bgfx::frame();
+ return false;
}
- // Cleanup.
- bgfx::destroyIndexBuffer(ibh);
- bgfx::destroyVertexBuffer(vbh);
- bgfx::destroyProgram(program);
+ uint32_t m_width;
+ uint32_t m_height;
+ uint32_t m_debug;
+ uint32_t m_reset;
+ bgfx::VertexBufferHandle m_vbh;
+ bgfx::IndexBufferHandle m_ibh;
+ bgfx::ProgramHandle m_program;
- // Shutdown bgfx.
- bgfx::shutdown();
+ int64_t m_timeOffset;
+};
- return 0;
-}
+ENTRY_IMPLEMENT_MAIN(ExampleInstancing);