int _main_(int _argc, char** _argv)
{
Args args(_argc, _argv);
uint32_t width = 1280;
uint32_t height = 720;
uint32_t debug = BGFX_DEBUG_TEXT;
uint32_t reset = BGFX_RESET_VSYNC;
bgfx::init(args.m_type, args.m_pciId);
bgfx::reset(width, height, reset);
// Enable debug text.
bgfx::setDebug(debug);
// Set views clear state.
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 0x303030ff
, 1.0f
, 0
);
// Imgui.
imguiCreate();
// Uniforms.
s_uniforms.init();
// Vertex declarations.
PosColorTexCoord0Vertex::init();
LightProbe lightProbes[LightProbe::Count];
lightProbes[LightProbe::Wells ].load("wells");
lightProbes[LightProbe::Uffizi].load("uffizi");
lightProbes[LightProbe::Pisa ].load("pisa");
lightProbes[LightProbe::Ennis ].load("ennis");
lightProbes[LightProbe::Grace ].load("grace");
LightProbe::Enum currentLightProbe = LightProbe::Wells;
bgfx::UniformHandle u_mtx = bgfx::createUniform("u_mtx", bgfx::UniformType::Mat4);
bgfx::UniformHandle u_params = bgfx::createUniform("u_params", bgfx::UniformType::Vec4);
bgfx::UniformHandle u_flags = bgfx::createUniform("u_flags", bgfx::UniformType::Vec4);
bgfx::UniformHandle u_camPos = bgfx::createUniform("u_camPos", bgfx::UniformType::Vec4);
bgfx::UniformHandle s_texCube = bgfx::createUniform("s_texCube", bgfx::UniformType::Int1);
bgfx::UniformHandle s_texCubeIrr = bgfx::createUniform("s_texCubeIrr", bgfx::UniformType::Int1);
bgfx::ProgramHandle programMesh = loadProgram("vs_ibl_mesh", "fs_ibl_mesh");
bgfx::ProgramHandle programSky = loadProgram("vs_ibl_skybox", "fs_ibl_skybox");
Mesh* meshBunny;
meshBunny = meshLoad("meshes/bunny.bin");
struct Settings
{
float m_speed;
float m_glossiness;
float m_exposure;
float m_diffspec;
float m_rgbDiff[3];
float m_rgbSpec[3];
bool m_diffuse;
bool m_specular;
bool m_diffuseIbl;
bool m_specularIbl;
bool m_showDiffColorWheel;
bool m_showSpecColorWheel;
ImguiCubemap::Enum m_crossCubemapPreview;
};
Settings settings;
settings.m_speed = 0.37f;
settings.m_glossiness = 1.0f;
settings.m_exposure = 0.0f;
settings.m_diffspec = 0.65f;
settings.m_rgbDiff[0] = 0.2f;
settings.m_rgbDiff[1] = 0.2f;
settings.m_rgbDiff[2] = 0.2f;
settings.m_rgbSpec[0] = 1.0f;
settings.m_rgbSpec[1] = 1.0f;
settings.m_rgbSpec[2] = 1.0f;
settings.m_diffuse = true;
settings.m_specular = true;
settings.m_diffuseIbl = true;
settings.m_specularIbl = true;
settings.m_showDiffColorWheel = true;
settings.m_showSpecColorWheel = false;
settings.m_crossCubemapPreview = ImguiCubemap::Cross;
float time = 0.0f;
int32_t leftScrollArea = 0;
entry::MouseState mouseState;
while (!entry::processEvents(width, height, debug, reset, &mouseState) )
{
imguiBeginFrame(mouseState.m_mx
, mouseState.m_my
, (mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
| (mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
| (mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
, mouseState.m_mz
, width
, height
);
static int32_t rightScrollArea = 0;
imguiBeginScrollArea("Settings", width - 256 - 10, 10, 256, 540, &rightScrollArea);
imguiLabel("Shade:");
imguiSeparator();
imguiBool("Diffuse", settings.m_diffuse);
imguiBool("Specular", settings.m_specular);
imguiBool("IBL Diffuse", settings.m_diffuseIbl);
imguiBool("IBL Specular", settings.m_specularIbl);
imguiSeparatorLine();
imguiSlider("Speed", settings.m_speed, 0.0f, 1.0f, 0.01f);
imguiSeparatorLine();
imguiSeparator();
imguiSlider("Exposure", settings.m_exposure, -8.0f, 8.0f, 0.01f);
imguiSeparator();
imguiLabel("Environment:");
currentLightProbe = LightProbe::Enum(imguiChoose(currentLightProbe
, "Wells"
, "Uffizi"
, "Pisa"
, "Ennis"
, "Grace"
) );
static float lod = 0.0f;
if (imguiCube(lightProbes[currentLightProbe].m_tex, lod, settings.m_crossCubemapPreview, true) )
{
settings.m_crossCubemapPreview = ImguiCubemap::Enum( (settings.m_crossCubemapPreview+1) % ImguiCubemap::Count);
}
imguiSlider("Texture LOD", lod, 0.0f, 10.1f, 0.1f);
imguiEndScrollArea();
imguiBeginScrollArea("Settings", 10, 70, 256, 576, &leftScrollArea);
imguiLabel("Material properties:");
imguiSeparator();
imguiSlider("Diffuse - Specular", settings.m_diffspec, 0.0f, 1.0f, 0.01f);
imguiSlider("Glossiness" , settings.m_glossiness, 0.0f, 1.0f, 0.01f);
imguiSeparator();
imguiColorWheel("Diffuse color:", &settings.m_rgbDiff[0], settings.m_showDiffColorWheel);
imguiSeparator();
imguiColorWheel("Specular color:", &settings.m_rgbSpec[0], settings.m_showSpecColorWheel);
imguiSeparator();
imguiLabel("Predefined materials:");
imguiSeparator();
if (imguiButton("Gold") )
{
settings.m_glossiness = 0.8f;
settings.m_diffspec = 1.0f;
settings.m_rgbDiff[0] = 0.0f;
settings.m_rgbDiff[1] = 0.0f;
settings.m_rgbDiff[2] = 0.0f;
settings.m_rgbSpec[0] = 1.0f;
settings.m_rgbSpec[1] = 0.86f;
settings.m_rgbSpec[2] = 0.58f;
}
if (imguiButton("Copper") )
{
settings.m_glossiness = 0.67f;
settings.m_diffspec = 1.0f;
settings.m_rgbDiff[0] = 0.0f;
settings.m_rgbDiff[1] = 0.0f;
settings.m_rgbDiff[2] = 0.0f;
settings.m_rgbSpec[0] = 0.98f;
settings.m_rgbSpec[1] = 0.82f;
settings.m_rgbSpec[2] = 0.76f;
}
if (imguiButton("Titanium") )
{
settings.m_glossiness = 0.57f;
settings.m_diffspec = 1.0f;
settings.m_rgbDiff[0] = 0.0f;
settings.m_rgbDiff[1] = 0.0f;
settings.m_rgbDiff[2] = 0.0f;
settings.m_rgbSpec[0] = 0.76f;
settings.m_rgbSpec[1] = 0.73f;
settings.m_rgbSpec[2] = 0.71f;
}
if (imguiButton("Steel") )
{
settings.m_glossiness = 0.82f;
settings.m_diffspec = 1.0f;
settings.m_rgbDiff[0] = 0.0f;
settings.m_rgbDiff[1] = 0.0f;
settings.m_rgbDiff[2] = 0.0f;
settings.m_rgbSpec[0] = 0.77f;
settings.m_rgbSpec[1] = 0.78f;
settings.m_rgbSpec[2] = 0.77f;
}
imguiEndScrollArea();
imguiEndFrame();
s_uniforms.m_glossiness = settings.m_glossiness;
s_uniforms.m_exposure = settings.m_exposure;
s_uniforms.m_diffspec = settings.m_diffspec;
s_uniforms.m_flags[0] = float(settings.m_diffuse);
s_uniforms.m_flags[1] = float(settings.m_specular);
s_uniforms.m_flags[2] = float(settings.m_diffuseIbl);
s_uniforms.m_flags[3] = float(settings.m_specularIbl);
memcpy(s_uniforms.m_rgbDiff, settings.m_rgbDiff, 3*sizeof(float) );
memcpy(s_uniforms.m_rgbSpec, settings.m_rgbSpec, 3*sizeof(float) );
s_uniforms.submitPerFrameUniforms();
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;
time += (float)(frameTime*settings.m_speed/freq);
s_uniforms.m_camPosTime[3] = time;
// Use debug font to print information about this example.
bgfx::dbgTextClear();
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/18-ibl");
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Image based lightning.");
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
float at[3] = { 0.0f, 0.0f, 0.0f };
float eye[3] = { 0.0f, 0.0f, -3.0f };
bx::mtxRotateXY(s_uniforms.m_mtx
, 0.0f
, time
);
float view[16];
float proj[16];
bx::mtxIdentity(view);
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f);
bgfx::setViewTransform(0, view, proj);
bx::mtxLookAt(view, eye, at);
memcpy(s_uniforms.m_camPosTime, eye, 3*sizeof(float) );
bx::mtxProj(proj, 60.0f, float(width)/float(height), 0.1f, 100.0f);
bgfx::setViewTransform(1, view, proj);
bgfx::setViewRect(0, 0, 0, width, height);
bgfx::setViewRect(1, 0, 0, width, height);
// View 0.
bgfx::setTexture(0, s_texCube, lightProbes[currentLightProbe].m_tex);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width, (float)height, true);
s_uniforms.submitPerDrawUniforms();
bgfx::submit(0, programSky);
// View 1.
float mtx[16];
bx::mtxSRT(mtx
, 1.0f
, 1.0f
, 1.0f
, 0.0f
, bx::pi+time
, 0.0f
, 0.0f
, -1.0f
, 0.0f
);
bgfx::setTexture(0, s_texCube, lightProbes[currentLightProbe].m_tex);
bgfx::setTexture(1, s_texCubeIrr, lightProbes[currentLightProbe].m_texIrr);
meshSubmit(meshBunny, 1, programMesh, mtx);
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
bgfx::frame();
}
meshUnload(meshBunny);
// Cleanup.
bgfx::destroyProgram(programMesh);
bgfx::destroyProgram(programSky);
bgfx::destroyUniform(u_camPos);
bgfx::destroyUniform(u_flags);
bgfx::destroyUniform(u_params);
bgfx::destroyUniform(u_mtx);
bgfx::destroyUniform(s_texCube);
bgfx::destroyUniform(s_texCubeIrr);
for (uint8_t ii = 0; ii < LightProbe::Count; ++ii)
{
lightProbes[ii].destroy();
}
s_uniforms.destroy();
imguiDestroy();
// Shutdown bgfx.
bgfx::shutdown();
return 0;
}
int _main_(int, char**)
{
uint32_t width = 800, height = 600;
uint32_t debug = BGFX_DEBUG_TEXT | BGFX_DEBUG_STATS;
uint32_t reset = BGFX_RESET_VSYNC | BGFX_RESET_MSAA_X8;
bool showStats = true;
bgfx::init();
bgfx::reset(width, height, reset);
bgfx::setDebug(debug);
size_t sz = 0;
void* fontdata = nullptr;
if(loadfile("assets/font/droidsans.ttf", fontdata, sz))
imguiCreate(fontdata, sz);
else
imguiCreate();
free(fontdata);
entry::MouseState mouseState;
float rgb[3] = {0.3f, 0.3f, 0.3f};
bool colorwheelActivated = false;
int32_t scrollArea = 0;
while(!entry::processEvents(width, height, debug, reset, &mouseState)) {
auto encodeColor = [&rgb]()->uint32_t{
return uint32_t(rgb[0]*255)<<24|uint32_t(rgb[1]*255)<<16|uint32_t(rgb[2]*255)<<8|0xff;
};
bgfx::setViewClear(0,
BGFX_CLEAR_COLOR | BGFX_CLEAR_DEPTH,
encodeColor(), 1.0f, 0);
bgfx::setViewRect(0, 0, 0, width, height);
bgfx::submit(0, BGFX_INVALID_HANDLE);
bgfx::dbgTextPrintf(0, 1, 0x4f, "hello world");
bgfx::dbgTextPrintf(0, 2, 0x5f, "simple bgfx program");
imguiBeginFrame(mouseState.m_mx, mouseState.m_my,
(mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
| (mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
, 0
, width
, height);
imguiBeginScrollArea("Test", width-350, 50, 330, 500, &scrollArea);
imguiSeparatorLine();
imguiLabel("foobar");
if(imguiButton("say hi"))
fprintf(stdout, "hi there\n");
imguiBool("show stats", showStats);
uint32_t newDebug = BGFX_DEBUG_TEXT | (showStats ? BGFX_DEBUG_STATS : 0);
if(newDebug != debug) {
debug = newDebug;
bgfx::setDebug(debug);
}
imguiColorWheel("bg color", rgb, colorwheelActivated);
ImGui::ColorEdit3("bg color", rgb);
imguiSeparatorLine();
if(imguiButton("quit"))
break;
imguiEndScrollArea();
imguiEndFrame();
bgfx::frame();
}
imguiDestroy();
bgfx::shutdown();
return 0;
}
int _main_(int _argc, char** _argv)
{
Args args(_argc, _argv);
uint32_t width = 1280;
uint32_t height = 720;
uint32_t debug = BGFX_DEBUG_TEXT;
uint32_t reset = 0
| BGFX_RESET_VSYNC
| BGFX_RESET_MSAA_X16
;
bgfx::init(args.m_type, args.m_pciId);
bgfx::reset(width, height, reset);
// Enable debug text.
bgfx::setDebug(debug);
// Set views clear state.
bgfx::setViewClear(0
, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
, 0x303030ff
, 1.0f
, 0
);
// Imgui.
imguiCreate();
// Uniforms.
Uniforms uniforms;
uniforms.init();
// Vertex declarations.
PosColorTexCoord0Vertex::init();
LightProbe lightProbes[LightProbe::Count];
lightProbes[LightProbe::Bolonga].load("bolonga");
lightProbes[LightProbe::Kyoto ].load("kyoto");
LightProbe::Enum currentLightProbe = LightProbe::Bolonga;
bgfx::UniformHandle u_mtx = bgfx::createUniform("u_mtx", bgfx::UniformType::Mat4);
bgfx::UniformHandle u_params = bgfx::createUniform("u_params", bgfx::UniformType::Vec4);
bgfx::UniformHandle u_flags = bgfx::createUniform("u_flags", bgfx::UniformType::Vec4);
bgfx::UniformHandle u_camPos = bgfx::createUniform("u_camPos", bgfx::UniformType::Vec4);
bgfx::UniformHandle s_texCube = bgfx::createUniform("s_texCube", bgfx::UniformType::Int1);
bgfx::UniformHandle s_texCubeIrr = bgfx::createUniform("s_texCubeIrr", bgfx::UniformType::Int1);
bgfx::ProgramHandle programMesh = loadProgram("vs_ibl_mesh", "fs_ibl_mesh");
bgfx::ProgramHandle programSky = loadProgram("vs_ibl_skybox", "fs_ibl_skybox");
Mesh* meshBunny;
meshBunny = meshLoad("meshes/bunny.bin");
Mesh* meshOrb;
meshOrb = meshLoad("meshes/orb.bin");
Camera camera;
Mouse mouse;
struct Settings
{
Settings()
{
m_envRotCurr = 0.0f;
m_envRotDest = 0.0f;
m_lightDir[0] = -0.8f;
m_lightDir[1] = 0.2f;
m_lightDir[2] = -0.5f;
m_lightCol[0] = 1.0f;
m_lightCol[1] = 1.0f;
m_lightCol[2] = 1.0f;
m_glossiness = 0.7f;
m_exposure = 0.0f;
m_bgType = 3.0f;
m_radianceSlider = 2.0f;
m_reflectivity = 0.85f;
m_rgbDiff[0] = 1.0f;
m_rgbDiff[1] = 1.0f;
m_rgbDiff[2] = 1.0f;
m_rgbSpec[0] = 1.0f;
m_rgbSpec[1] = 1.0f;
m_rgbSpec[2] = 1.0f;
m_lod = 0.0f;
m_doDiffuse = false;
m_doSpecular = false;
m_doDiffuseIbl = true;
m_doSpecularIbl = true;
m_showLightColorWheel = true;
m_showDiffColorWheel = true;
m_showSpecColorWheel = true;
m_metalOrSpec = 0;
m_meshSelection = 0;
m_crossCubemapPreview = ImguiCubemap::Latlong;
}
float m_envRotCurr;
float m_envRotDest;
float m_lightDir[3];
float m_lightCol[3];
float m_glossiness;
float m_exposure;
float m_radianceSlider;
float m_bgType;
float m_reflectivity;
float m_rgbDiff[3];
float m_rgbSpec[3];
float m_lod;
bool m_doDiffuse;
bool m_doSpecular;
bool m_doDiffuseIbl;
bool m_doSpecularIbl;
bool m_showLightColorWheel;
bool m_showDiffColorWheel;
bool m_showSpecColorWheel;
uint8_t m_metalOrSpec;
uint8_t m_meshSelection;
ImguiCubemap::Enum m_crossCubemapPreview;
};
Settings settings;
int32_t leftScrollArea = 0;
entry::MouseState mouseState;
while (!entry::processEvents(width, height, debug, reset, &mouseState) )
{
imguiBeginFrame(mouseState.m_mx
, mouseState.m_my
, (mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
| (mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
| (mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
, mouseState.m_mz
, uint16_t(width)
, uint16_t(height)
);
static int32_t rightScrollArea = 0;
imguiBeginScrollArea("", width - 256 - 10, 10, 256, 700, &rightScrollArea);
imguiLabel("Environment light:");
imguiIndent();
imguiBool("IBL Diffuse", settings.m_doDiffuseIbl);
imguiBool("IBL Specular", settings.m_doSpecularIbl);
currentLightProbe = LightProbe::Enum(imguiTabs(
uint8_t(currentLightProbe)
, true
, ImguiAlign::LeftIndented
, 16
, 2
, 2
, "Bolonga"
, "Kyoto"
) );
if (imguiCube(lightProbes[currentLightProbe].m_tex, settings.m_lod, settings.m_crossCubemapPreview, true) )
{
settings.m_crossCubemapPreview = ImguiCubemap::Enum( (settings.m_crossCubemapPreview+1) % ImguiCubemap::Count);
}
imguiSlider("Texture LOD", settings.m_lod, 0.0f, 10.1f, 0.1f);
imguiUnindent();
imguiSeparator(8);
imguiLabel("Directional light:");
imguiIndent();
imguiBool("Diffuse", settings.m_doDiffuse);
imguiBool("Specular", settings.m_doSpecular);
const bool doDirectLighting = settings.m_doDiffuse || settings.m_doSpecular;
imguiSlider("Light direction X", settings.m_lightDir[0], -1.0f, 1.0f, 0.1f, doDirectLighting);
imguiSlider("Light direction Y", settings.m_lightDir[1], -1.0f, 1.0f, 0.1f, doDirectLighting);
imguiSlider("Light direction Z", settings.m_lightDir[2], -1.0f, 1.0f, 0.1f, doDirectLighting);
imguiColorWheel("Color:", settings.m_lightCol, settings.m_showLightColorWheel, 0.6f, doDirectLighting);
imguiUnindent();
imguiSeparator(8);
imguiLabel("Background:");
imguiIndent();
{
int32_t selection;
if (0.0f == settings.m_bgType) { selection = UINT8_C(0); }
else if (7.0f == settings.m_bgType) { selection = UINT8_C(2); }
else { selection = UINT8_C(1); }
selection = imguiTabs(
uint8_t(selection)
, true
, ImguiAlign::LeftIndented
, 16
, 2
, 3
, "Skybox"
, "Radiance"
, "Irradiance"
);
if (0 == selection) { settings.m_bgType = 0.0f; }
else if (2 == selection) { settings.m_bgType = 7.0f; }
else { settings.m_bgType = settings.m_radianceSlider; }
const bool isRadiance = (selection == 1);
imguiSlider("Mip level", settings.m_radianceSlider, 1.0f, 6.0f, 0.1f, isRadiance);
}
imguiUnindent();
imguiSeparator(8);
imguiLabel("Post processing:");
imguiIndent();
imguiSlider("Exposure", settings.m_exposure, -4.0f, 4.0f, 0.1f);
imguiUnindent();
imguiSeparator();
imguiEndScrollArea();
imguiBeginScrollArea("", 10, 70, 256, 636, &leftScrollArea);
imguiLabel("Mesh:");
imguiIndent();
settings.m_meshSelection = uint8_t(imguiChoose(settings.m_meshSelection, "Bunny", "Orbs") );
imguiUnindent();
const bool isBunny = (0 == settings.m_meshSelection);
if (!isBunny)
{
settings.m_metalOrSpec = 0;
}
imguiSeparator(4);
imguiLabel("Workflow:");
imguiIndent();
if (imguiCheck("Metalness", 0 == settings.m_metalOrSpec, isBunny) ) { settings.m_metalOrSpec = 0; }
if (imguiCheck("Specular", 1 == settings.m_metalOrSpec, isBunny) ) { settings.m_metalOrSpec = 1; }
imguiUnindent();
imguiSeparator(4);
imguiLabel("Material:");
imguiIndent();
imguiSlider("Glossiness", settings.m_glossiness, 0.0f, 1.0f, 0.01f, isBunny);
imguiSlider(0 == settings.m_metalOrSpec ? "Metalness" : "Diffuse - Specular", settings.m_reflectivity, 0.0f, 1.0f, 0.01f, isBunny);
imguiUnindent();
imguiColorWheel("Diffuse:", &settings.m_rgbDiff[0], settings.m_showDiffColorWheel, 0.7f);
imguiSeparator();
imguiColorWheel("Specular:", &settings.m_rgbSpec[0], settings.m_showSpecColorWheel, 0.7f, (1 == settings.m_metalOrSpec) && isBunny);
imguiEndScrollArea();
imguiEndFrame();
uniforms.m_glossiness = settings.m_glossiness;
uniforms.m_reflectivity = settings.m_reflectivity;
uniforms.m_exposure = settings.m_exposure;
uniforms.m_bgType = settings.m_bgType;
uniforms.m_metalOrSpec = float(settings.m_metalOrSpec);
uniforms.m_doDiffuse = float(settings.m_doDiffuse);
uniforms.m_doSpecular = float(settings.m_doSpecular);
uniforms.m_doDiffuseIbl = float(settings.m_doDiffuseIbl);
uniforms.m_doSpecularIbl = float(settings.m_doSpecularIbl);
bx::memCopy(uniforms.m_rgbDiff, settings.m_rgbDiff, 3*sizeof(float) );
bx::memCopy(uniforms.m_rgbSpec, settings.m_rgbSpec, 3*sizeof(float) );
bx::memCopy(uniforms.m_lightDir, settings.m_lightDir, 3*sizeof(float) );
bx::memCopy(uniforms.m_lightCol, settings.m_lightCol, 3*sizeof(float) );
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 deltaTimeSec = float(double(frameTime)/freq);
// Use debug font to print information about this example.
bgfx::dbgTextClear();
bgfx::dbgTextPrintf(0, 1, 0x4f, "bgfx/examples/18-ibl");
bgfx::dbgTextPrintf(0, 2, 0x6f, "Description: Image-based lighting.");
bgfx::dbgTextPrintf(0, 3, 0x0f, "Frame: % 7.3f[ms]", double(frameTime)*toMs);
// Camera.
const bool mouseOverGui = imguiMouseOverArea();
mouse.update(float(mouseState.m_mx), float(mouseState.m_my), mouseState.m_mz, width, height);
if (!mouseOverGui)
{
if (mouseState.m_buttons[entry::MouseButton::Left])
{
camera.orbit(mouse.m_dx, mouse.m_dy);
}
else if (mouseState.m_buttons[entry::MouseButton::Right])
{
camera.dolly(mouse.m_dx + mouse.m_dy);
}
else if (mouseState.m_buttons[entry::MouseButton::Middle])
{
settings.m_envRotDest += mouse.m_dx*2.0f;
}
else if (0 != mouse.m_scroll)
{
camera.dolly(float(mouse.m_scroll)*0.05f);
}
}
camera.update(deltaTimeSec);
bx::memCopy(uniforms.m_cameraPos, camera.m_pos.curr, 3*sizeof(float) );
// View Transform 0.
float view[16];
float proj[16];
bx::mtxIdentity(view);
bx::mtxOrtho(proj, 0.0f, 1.0f, 1.0f, 0.0f, 0.0f, 100.0f);
bgfx::setViewTransform(0, view, proj);
// View Transform 1.
camera.mtxLookAt(view);
bx::mtxProj(proj, 45.0f, float(width)/float(height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
bgfx::setViewTransform(1, view, proj);
// View rect.
bgfx::setViewRect(0, 0, 0, uint16_t(width), uint16_t(height) );
bgfx::setViewRect(1, 0, 0, uint16_t(width), uint16_t(height) );
// Env rotation.
const float amount = bx::fmin(deltaTimeSec/0.12f, 1.0f);
settings.m_envRotCurr = bx::flerp(settings.m_envRotCurr, settings.m_envRotDest, amount);
// Env mtx.
float mtxEnvView[16];
camera.envViewMtx(mtxEnvView);
float mtxEnvRot[16];
bx::mtxRotateY(mtxEnvRot, settings.m_envRotCurr);
bx::mtxMul(uniforms.m_mtx, mtxEnvView, mtxEnvRot); // Used for Skybox.
// Submit view 0.
bgfx::setTexture(0, s_texCube, lightProbes[currentLightProbe].m_tex);
bgfx::setTexture(1, s_texCubeIrr, lightProbes[currentLightProbe].m_texIrr);
bgfx::setState(BGFX_STATE_RGB_WRITE|BGFX_STATE_ALPHA_WRITE);
screenSpaceQuad( (float)width, (float)height, true);
uniforms.submit();
bgfx::submit(0, programSky);
// Submit view 1.
bx::memCopy(uniforms.m_mtx, mtxEnvRot, 16*sizeof(float)); // Used for IBL.
if (0 == settings.m_meshSelection)
{
// Submit bunny.
float mtx[16];
bx::mtxSRT(mtx, 1.0f, 1.0f, 1.0f, 0.0f, bx::pi, 0.0f, 0.0f, -0.80f, 0.0f);
bgfx::setTexture(0, s_texCube, lightProbes[currentLightProbe].m_tex);
bgfx::setTexture(1, s_texCubeIrr, lightProbes[currentLightProbe].m_texIrr);
uniforms.submit();
meshSubmit(meshBunny, 1, programMesh, mtx);
}
else
{
// Submit orbs.
for (float yy = 0, yend = 5.0f; yy < yend; yy+=1.0f)
{
for (float xx = 0, xend = 5.0f; xx < xend; xx+=1.0f)
{
const float scale = 1.2f;
const float spacing = 2.2f;
const float yAdj = -0.8f;
float mtx[16];
bx::mtxSRT(mtx
, scale/xend
, scale/xend
, scale/xend
, 0.0f
, 0.0f
, 0.0f
, 0.0f + (xx/xend)*spacing - (1.0f + (scale-1.0f)*0.5f - 1.0f/xend)
, yAdj/yend + (yy/yend)*spacing - (1.0f + (scale-1.0f)*0.5f - 1.0f/yend)
, 0.0f
);
uniforms.m_glossiness = xx*(1.0f/xend);
uniforms.m_reflectivity = (yend-yy)*(1.0f/yend);
uniforms.m_metalOrSpec = 0.0f;
uniforms.submit();
bgfx::setTexture(0, s_texCube, lightProbes[currentLightProbe].m_tex);
bgfx::setTexture(1, s_texCubeIrr, lightProbes[currentLightProbe].m_texIrr);
meshSubmit(meshOrb, 1, programMesh, mtx);
}
}
}
// Advance to next frame. Rendering thread will be kicked to
// process submitted rendering primitives.
bgfx::frame();
}
meshUnload(meshBunny);
meshUnload(meshOrb);
// Cleanup.
bgfx::destroyProgram(programMesh);
bgfx::destroyProgram(programSky);
bgfx::destroyUniform(u_camPos);
bgfx::destroyUniform(u_flags);
bgfx::destroyUniform(u_params);
bgfx::destroyUniform(u_mtx);
bgfx::destroyUniform(s_texCube);
bgfx::destroyUniform(s_texCubeIrr);
for (uint8_t ii = 0; ii < LightProbe::Count; ++ii)
{
lightProbes[ii].destroy();
}
uniforms.destroy();
imguiDestroy();
// Shutdown bgfx.
bgfx::shutdown();
return 0;
}