예제 #1
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 = 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;
}
예제 #2
0
파일: main.cpp 프로젝트: find/bgfx
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;
}
예제 #3
0
파일: ibl.cpp 프로젝트: Tauwasser/mame
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;
}