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-rw-r--r--3rdparty/bgfx/examples/26-occlusion/occlusion.cpp269
1 files changed, 155 insertions, 114 deletions
diff --git a/3rdparty/bgfx/examples/26-occlusion/occlusion.cpp b/3rdparty/bgfx/examples/26-occlusion/occlusion.cpp
index 634aaa6cc9a..d2c43c903b9 100644
--- a/3rdparty/bgfx/examples/26-occlusion/occlusion.cpp
+++ b/3rdparty/bgfx/examples/26-occlusion/occlusion.cpp
@@ -6,6 +6,10 @@
#include "common.h"
#include "bgfx_utils.h"
#include "camera.h"
+#include "imgui/imgui.h"
+
+namespace
+{
#define CUBES_DIM 10
@@ -60,17 +64,23 @@ static const uint16_t s_cubeIndices[36] =
class ExampleOcclusion : public entry::AppI
{
- void init(int _argc, char** _argv) BX_OVERRIDE
+public:
+ ExampleOcclusion(const char* _name, const char* _description)
+ : entry::AppI(_name, _description)
+ {
+ }
+
+ void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override
{
Args args(_argc, _argv);
- uint32_t width = 1280;
- uint32_t height = 720;
- m_debug = BGFX_DEBUG_TEXT;
+ m_width = _width;
+ m_height = _height;
+ m_debug = BGFX_DEBUG_NONE;
m_reset = BGFX_RESET_VSYNC;
bgfx::init(args.m_type, args.m_pciId);
- bgfx::reset(width, height, m_reset);
+ bgfx::reset(m_width, m_height, m_reset);
// Enable debug text.
bgfx::setDebug(m_debug);
@@ -109,9 +119,15 @@ class ExampleOcclusion : public entry::AppI
// Create program from shaders.
m_program = loadProgram("vs_cubes", "fs_cubes");
- for (uint32_t ii = 0; ii < BX_COUNTOF(m_occlusionQueries); ++ii)
+ const bgfx::Caps* caps = bgfx::getCaps();
+ m_occlusionQuerySupported = !!(caps->supported & BGFX_CAPS_OCCLUSION_QUERY);
+
+ if (m_occlusionQuerySupported)
{
- m_occlusionQueries[ii] = bgfx::createOcclusionQuery();
+ for (uint32_t ii = 0; ii < BX_COUNTOF(m_occlusionQueries); ++ii)
+ {
+ m_occlusionQueries[ii] = bgfx::createOcclusionQuery();
+ }
}
cameraCreate();
@@ -121,21 +137,28 @@ class ExampleOcclusion : public entry::AppI
cameraSetHorizontalAngle(bx::toRad(-45.0f) );
m_timeOffset = bx::getHPCounter();
+
+ imguiCreate();
}
- virtual int shutdown() BX_OVERRIDE
+ virtual int shutdown() override
{
+ imguiDestroy();
+
// Cleanup.
cameraDestroy();
- for (uint32_t ii = 0; ii < BX_COUNTOF(m_occlusionQueries); ++ii)
+ if (m_occlusionQuerySupported)
{
- bgfx::destroyOcclusionQuery(m_occlusionQueries[ii]);
+ for (uint32_t ii = 0; ii < BX_COUNTOF(m_occlusionQueries); ++ii)
+ {
+ bgfx::destroy(m_occlusionQueries[ii]);
+ }
}
- bgfx::destroyIndexBuffer(m_ibh);
- bgfx::destroyVertexBuffer(m_vbh);
- bgfx::destroyProgram(m_program);
+ bgfx::destroy(m_ibh);
+ bgfx::destroy(m_vbh);
+ bgfx::destroy(m_program);
// Shutdown bgfx.
bgfx::shutdown();
@@ -143,122 +166,133 @@ class ExampleOcclusion : public entry::AppI
return 0;
}
- bool update() BX_OVERRIDE
+ bool update() override
{
- if (!entry::processWindowEvents(m_state, m_debug, m_reset) )
+ if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
{
- 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;
- const float time = (float)( (now-m_timeOffset)/double(bx::getHPFrequency() ) );
- const float deltaTime = float(frameTime/freq);
-
- // Use debug font to print information about this example.
- bgfx::dbgTextClear();
- bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/26-occlusion");
- bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Using occlusion query for conditional rendering.");
- bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
-
- uint32_t width = m_state.m_width;
- uint32_t height = m_state.m_height;
-
- // Update camera.
- float view[16];
- cameraUpdate(deltaTime, m_state.m_mouse);
- cameraGetViewMtx(view);
-
- // Set view and projection matrix for view 0.
- const bgfx::HMD* hmd = bgfx::getHMD();
- if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
- {
- float viewHead[16];
- float eye[3] = {};
- bx::mtxQuatTranslationHMD(viewHead, hmd->eye[0].rotation, eye);
+ imguiBeginFrame(m_mouseState.m_mx
+ , m_mouseState.m_my
+ , (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
+ | (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
+ | (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
+ , m_mouseState.m_mz
+ , uint16_t(m_width)
+ , uint16_t(m_height)
+ );
- float tmp[16];
- bx::mtxMul(tmp, view, viewHead);
+ showExampleDialog(this
+ , !m_occlusionQuerySupported
+ ? "Occlusion query is not supported."
+ : NULL
+ );
- bgfx::setViewTransform(0, tmp, hmd->eye[0].projection);
- bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
+ imguiEndFrame();
- bgfx::setViewTransform(1, tmp, hmd->eye[1].projection);
- bgfx::setViewRect(1, 0, 0, hmd->width, hmd->height);
- }
- else
+ if (m_occlusionQuerySupported)
{
- float proj[16];
- bx::mtxProj(proj, 90.0f, float(width)/float(height), 0.1f, 10000.0f, bgfx::getCaps()->homogeneousDepth);
+ 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 float time = (float)( (now-m_timeOffset)/double(bx::getHPFrequency() ) );
+ const float deltaTime = float(frameTime/freq);
+
+ // Update camera.
+ float view[16];
+ cameraUpdate(deltaTime, m_state.m_mouse);
+ cameraGetViewMtx(view);
+
+ // Set view and projection matrix for view 0.
+ const bgfx::HMD* hmd = bgfx::getHMD();
+ if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
+ {
+ float viewHead[16];
+ float eye[3] = {};
+ bx::mtxQuatTranslationHMD(viewHead, hmd->eye[0].rotation, eye);
- bgfx::setViewTransform(0, view, proj);
- bgfx::setViewRect(0, 0, 0, uint16_t(width), uint16_t(height) );
+ float tmp[16];
+ bx::mtxMul(tmp, view, viewHead);
- bgfx::setViewTransform(1, view, proj);
- bgfx::setViewRect(1, 0, 0, uint16_t(width), uint16_t(height) );
+ bgfx::setViewTransform(0, tmp, hmd->eye[0].projection);
+ bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
- float at[3] = { 0.0f, 0.0f, 0.0f };
- float eye[3] = { 17.5f, 10.0f, -17.5f };
- bx::mtxLookAt(view, eye, at);
+ bgfx::setViewTransform(1, tmp, hmd->eye[1].projection);
+ bgfx::setViewRect(1, 0, 0, hmd->width, hmd->height);
+ }
+ else
+ {
+ float proj[16];
+ bx::mtxProj(proj, 90.0f, float(m_width)/float(m_height), 0.1f, 10000.0f, bgfx::getCaps()->homogeneousDepth);
- bgfx::setViewTransform(2, view, proj);
- bgfx::setViewRect(2, 10, uint16_t(height - height/4 - 10), uint16_t(width/4), uint16_t(height/4) );
- }
+ bgfx::setViewTransform(0, view, proj);
+ bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
- bgfx::touch(0);
- bgfx::touch(2);
+ bgfx::setViewTransform(1, view, proj);
+ bgfx::setViewRect(1, 0, 0, uint16_t(m_width), uint16_t(m_height) );
- uint8_t img[CUBES_DIM*CUBES_DIM*2];
+ float at[3] = { 0.0f, 0.0f, 0.0f };
+ float eye[3] = { 17.5f, 10.0f, -17.5f };
+ bx::mtxLookAt(view, eye, at);
- for (uint32_t yy = 0; yy < CUBES_DIM; ++yy)
- {
- for (uint32_t xx = 0; xx < CUBES_DIM; ++xx)
+ bgfx::setViewTransform(2, view, proj);
+ bgfx::setViewRect(2, 10, uint16_t(m_height - m_height/4 - 10), uint16_t(m_width/4), uint16_t(m_height/4) );
+ }
+
+ bgfx::touch(0);
+ bgfx::touch(2);
+
+ uint8_t img[CUBES_DIM*CUBES_DIM*2];
+
+ for (uint32_t yy = 0; yy < CUBES_DIM; ++yy)
{
- float mtx[16];
- bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
- mtx[12] = -(CUBES_DIM-1) * 3.0f / 2.0f + float(xx)*3.0f;
- mtx[13] = 0.0f;
- mtx[14] = -(CUBES_DIM-1) * 3.0f / 2.0f + float(yy)*3.0f;
-
- bgfx::OcclusionQueryHandle occlusionQuery = m_occlusionQueries[yy*CUBES_DIM+xx];
-
- bgfx::setTransform(mtx);
- bgfx::setVertexBuffer(m_vbh);
- bgfx::setIndexBuffer(m_ibh);
- bgfx::setCondition(occlusionQuery, true);
- bgfx::setState(BGFX_STATE_DEFAULT);
- bgfx::submit(0, m_program);
-
- bgfx::setTransform(mtx);
- bgfx::setVertexBuffer(m_vbh);
- bgfx::setIndexBuffer(m_ibh);
- bgfx::setState(0
- | BGFX_STATE_DEPTH_TEST_LEQUAL
- | BGFX_STATE_CULL_CW
- );
- bgfx::submit(1, m_program, occlusionQuery);
-
- bgfx::setTransform(mtx);
- bgfx::setVertexBuffer(m_vbh);
- bgfx::setIndexBuffer(m_ibh);
- bgfx::setCondition(occlusionQuery, true);
- bgfx::setState(BGFX_STATE_DEFAULT);
- bgfx::submit(2, m_program);
-
- img[(yy*CUBES_DIM+xx)*2+0] = " \xfex"[bgfx::getResult(occlusionQuery)];
- img[(yy*CUBES_DIM+xx)*2+1] = 0xf;
+ for (uint32_t xx = 0; xx < CUBES_DIM; ++xx)
+ {
+ float mtx[16];
+ bx::mtxRotateXY(mtx, time + xx*0.21f, time + yy*0.37f);
+ mtx[12] = -(CUBES_DIM-1) * 3.0f / 2.0f + float(xx)*3.0f;
+ mtx[13] = 0.0f;
+ mtx[14] = -(CUBES_DIM-1) * 3.0f / 2.0f + float(yy)*3.0f;
+
+ bgfx::OcclusionQueryHandle occlusionQuery = m_occlusionQueries[yy*CUBES_DIM+xx];
+
+ bgfx::setTransform(mtx);
+ bgfx::setVertexBuffer(0, m_vbh);
+ bgfx::setIndexBuffer(m_ibh);
+ bgfx::setCondition(occlusionQuery, true);
+ bgfx::setState(BGFX_STATE_DEFAULT);
+ bgfx::submit(0, m_program);
+
+ bgfx::setTransform(mtx);
+ bgfx::setVertexBuffer(0, m_vbh);
+ bgfx::setIndexBuffer(m_ibh);
+ bgfx::setState(0
+ | BGFX_STATE_DEPTH_TEST_LEQUAL
+ | BGFX_STATE_CULL_CW
+ );
+ bgfx::submit(1, m_program, occlusionQuery);
+
+ bgfx::setTransform(mtx);
+ bgfx::setVertexBuffer(0, m_vbh);
+ bgfx::setIndexBuffer(m_ibh);
+ bgfx::setCondition(occlusionQuery, true);
+ bgfx::setState(BGFX_STATE_DEFAULT);
+ bgfx::submit(2, m_program);
+
+ img[(yy*CUBES_DIM+xx)*2+0] = " \xfex"[bgfx::getResult(occlusionQuery)];
+ img[(yy*CUBES_DIM+xx)*2+1] = 0xf;
+ }
}
- }
- for (uint16_t xx = 0; xx < CUBES_DIM; ++xx)
- {
- bgfx::dbgTextImage(5 + xx*2, 5, 1, CUBES_DIM, img + xx*2, CUBES_DIM*2);
- }
+ for (uint16_t xx = 0; xx < CUBES_DIM; ++xx)
+ {
+ bgfx::dbgTextImage(5 + xx*2, 5, 1, CUBES_DIM, img + xx*2, CUBES_DIM*2);
+ }
- int32_t numPixels = 0;
- bgfx::getResult(m_occlusionQueries[0], &numPixels);
- bgfx::dbgTextPrintf(5, 5 + CUBES_DIM + 1, 0xf, "%d", numPixels);
+ int32_t numPixels = 0;
+ bgfx::getResult(m_occlusionQueries[0], &numPixels);
+ bgfx::dbgTextPrintf(5, 5 + CUBES_DIM + 1, 0xf, "%d", numPixels);
+ }
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
@@ -270,17 +304,24 @@ class ExampleOcclusion : public entry::AppI
return false;
}
- uint32_t m_reset;
+ entry::MouseState m_mouseState;
+
+ 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;
int64_t m_timeOffset;
+ bool m_occlusionQuerySupported;
bgfx::OcclusionQueryHandle m_occlusionQueries[CUBES_DIM*CUBES_DIM];
entry::WindowState m_state;
};
-ENTRY_IMPLEMENT_MAIN(ExampleOcclusion);
+} // namespace
+
+ENTRY_IMPLEMENT_MAIN(ExampleOcclusion, "26-occlusion", "Using occlusion query for conditional rendering.");