Esempio n. 1
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    void Render(double time) {
        const double day_duration = 67.0;
        auto sun =
          Vec3f(0.000, 1.000, 0.000) * 1e10 * SineWave(time / day_duration) +
          Vec3f(0.000, 0.000, -1.000) * 1e10 * CosineWave(time / day_duration);

        auto camera = CamMatrixf::Orbiting(
          Vec3f(),
          5.0,
          FullCircles(-0.10 - time / 27.0),
          Degrees(-20 - SineWave(time / 17.0) * 30));

        auto model = ModelMatrixf::RotationA(
          Vec3f(1.0, 1.0, 1.0), FullCircles(time / 13.0));

        gl.Clear().ColorBuffer().DepthBuffer();

        sky_box.Use();
        sky_box_prog.Use();
        sky_box_camera_matrix.Set(camera);
        sky_box_sun_position.Set(sun);
        sky_box.Draw();

        shape.Use();
        shape_prog.Use();
        shape_model_matrix.Set(model);
        shape_camera_matrix.Set(camera);
        shape_camera_position.Set(camera.Position());
        shape_sun_position.Set(sun);
        shape.Draw();
    }
Esempio n. 2
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	void RenderOffscreen(double time)
	{
		fbo.Bind();

		gl.Clear().ColorBuffer().DepthBuffer();

		gl.BlendFunc(BlendFn::One, BlendFn::One);
		gl.Enable(Capability::Blend);
		gl.Enable(Capability::DepthTest);

		draw_prog.Use();
		draw_prog.camera_matrix.Set(
			CamMatrixf::Orbiting(
				Vec3f(),
				27.0,
				Degrees(time * 23),
				Degrees(SineWave(time / 23.0) * 80)
			)
		);

		cube.Use();
		cube.Draw(n*n*n);

		gl.Disable(Capability::DepthTest);
		gl.Disable(Capability::Blend);

		fbo.Unbind();
	}
Esempio n. 3
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	LightRayExample(void)
	 : gl()
	 , mesh_loader(
		mesh_input.stream,
		shapes::ObjMesh::LoadingOptions(false).Normals()
	), meshes(List("Position")("Normal").Get(), mesh_loader)
	 , fan_index(mesh_loader.GetMeshIndex("Fan"))
	 , light_position(0.0, 0.0, -100.0)
	 , vert_shader()
	 , mask_prog(vert_shader)
	 , mask_vao(meshes.VAOForProgram(mask_prog))
	 , draw_prog(vert_shader)
	 , draw_vao(meshes.VAOForProgram(draw_prog))
	 , shadow_tex_unit(0)
	 , light_tex_unit(1)
	{
		mesh_input.stream.close();

		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);

		RenderShadowMap(512);

		SetupLightMask();

		mask_prog.Use();
		mask_prog.light_position.Set(light_position);

		draw_prog.Use();
		draw_prog.light_position.Set(light_position);

		gl.ClearColor(1.0f, 1.0f, 1.0f, 0.0f);
	}
Esempio n. 4
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	void Update(double time)
	{
		gl.Viewport(size, size);

		fbo.Bind(Framebuffer::Target::Draw);
		Framebuffer::AttachColorTexture(
			Framebuffer::Target::Draw,
			1,
			holder.CurrentHeightMap(),
			0
		);
		Context::ColorBuffer draw_buffs[2] = {
			FramebufferColorAttachment::_0,
			FramebufferColorAttachment::_1
		};
		gl.DrawBuffers(draw_buffs);

		prog.Use();
		prog.hmap_1.Set(holder.HMapUnit1());
		prog.hmap_2.Set(holder.HMapUnit2());
		prog.time.Set(time);

		screen.Use();

		gl.Disable(Capability::DepthTest);
		screen.Draw();
		gl.Enable(Capability::DepthTest);

		holder.Swap();
	}
Esempio n. 5
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	void Render(double time)
	{
		auto camera =
			CamMatrixf::Roll(Degrees(SineWave(time / 11.0)*7+SineWave(time/13.0)*5))*
			CamMatrixf::Orbiting(
				Vec3f(),
				40.0f,
				Degrees(SineWave(time / 11.0)*10+CosineWave(time/19.0)*10-90),
				Degrees(SineWave(time / 17.0)*10+SineWave(time/13.0)*10)
			);

		auto mm_identity = ModelMatrixf();
		auto mm_rotation = ModelMatrixf::RotationZ(FullCircles(time / 7.0));

		Uniform<Mat4f>* model_matrix = nullptr;

		GLuint drawing_fan = fan_index;
		auto drawing_driver =
			[
				&model_matrix,
				&mm_identity,
				&mm_rotation,
				&drawing_fan
			](GLuint phase) -> bool
			{
				if(phase == drawing_fan)
					model_matrix->Set(mm_rotation);
				else model_matrix->Set(mm_identity);
				return true;
			};

		// render the light mask
		light_fbo.Bind(Framebuffer::Target::Draw);

		gl.Clear().ColorBuffer().DepthBuffer();

		mask_vao.Bind();
		mask_prog.Use();
		mask_prog.camera_matrix.Set(camera);
		model_matrix = &mask_prog.model_matrix;

		meshes.Draw(drawing_driver);

		// render the final image
		DefaultFramebuffer().Bind(Framebuffer::Target::Draw);

		gl.Clear().ColorBuffer().DepthBuffer();

		draw_vao.Bind();
		draw_prog.Use();
		Vec4f lsp = projection * camera * Vec4f(light_position, 1.0);
		draw_prog.light_screen_pos = lsp.xyz()/lsp.w();
		draw_prog.camera_matrix.Set(camera);
		model_matrix = &draw_prog.model_matrix;

		meshes.Draw(drawing_driver);
	}
Esempio n. 6
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	void Render(double time)
	{
		flow.Update(time);

		Framebuffer::BindDefault(Framebuffer::Target::Draw);
		gl.DrawBuffer(ColorBuffer::BackLeft);
		gl.Viewport(width, height);
		gl.Clear().ColorBuffer().DepthBuffer();

		screen_prog.Use();
		screen.Use();
		screen.Draw();
	}
	void Render(double time)
	{
		gl.Clear().ColorBuffer().DepthBuffer();

		camera_matrix.Set(
			CamMatrixf::Orbiting(
				Vec3f(),
				4.0,
				Degrees(time * 25),
				Degrees(SineWave(time / 30.0) * 90)
			)
		);

		model_matrix.Set(
			ModelMatrixf::RotationA(
				Vec3f(1.0f, 1.0f, 1.0f),
				FullCircles(time * 0.5)
			)
		);

		shape.Draw();

		thread_ready.Signal();
		parent_ready.Wait();
	}
	ObjMeshExample(void)
	 : gl()
	 , objects(load_objects())
	 , depth_prog()
	 , draw_prog()
	 , depth_vao(objects.VAOForProgram(depth_prog))
	 , draw_vao(objects.VAOForProgram(draw_prog))
	{
		UniformSampler(draw_prog, "DepthTex").Set(0);
		Texture::Active(0);
		depth_tex.Bind(Texture::Target::Rectangle);

		gl.ClearColor(0.8f, 0.8f, 0.7f, 0.0f);
		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::CullFace);
	}
Esempio n. 9
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	void Draw(double time, double fade)
	{
		// Shadow map
		shadows_fbo.Bind(FramebufferTarget::Draw);
		gl.Viewport(shadow_size, shadow_size);
		gl.Clear().DepthBuffer();

		auto light = CamMatrixf::Orbiting(
			Vec3f(0, side*0.25, 0),
			side*1.5,
			Degrees(-time * 27),
			Degrees(SineWave(time / 19.0)*25  + 45)
		);

		shadow_prog.fade.Set(fade);
		shadow_prog.camera_matrix.Set(light);

		shadow_prog.Use();
		shadow_vao.Bind();
		gl.Enable(Capability::PolygonOffsetFill);
		cube.Draw(side*side);
		gl.Disable(Capability::PolygonOffsetFill);
		gl.Finish();

		// On-screen
		default_fb.Bind(Framebuffer::Target::Draw);
		gl.Viewport(width, height);
		gl.Clear().ColorBuffer().DepthBuffer();

		auto camera = CamMatrixf::Orbiting(
			Vec3f(),
			side*1.1,
			Degrees(time * 19),
			Degrees(SineWave(time / 20.0) * 39 + 50)
		);

		display_prog.fade.Set(fade);
		display_prog.light_pos.Set(light.Position());
		display_prog.camera_pos.Set(camera.Position());
		display_prog.light_matrix.Set(light);
		display_prog.camera_matrix.Set(camera);

		display_prog.Use();
		display_vao.Bind();
		cube.Draw(side*side);
	}
	void Render(double time)
	{
		gl.ClearDepth(0.0f);
		gl.Clear().DepthBuffer();

		auto camera =
			CamMatrixf::Orbiting(
				objects.BoundingSphere().Center(),
				objects.BoundingSphere().Radius()*2.8,
				FullCircles(time / 19.0),
				Degrees(SineWave(time / 17.0) * 90)
			);



		depth_prog.Use();
		gl.DepthFunc(CompareFn::Greater);
		gl.CullFace(Face::Front);
		depth_prog.camera_matrix.Set(camera);
		depth_prog.model_matrix.Set(Mat4f());
		objects.Draw();

		Texture::CopyImage2D(
			Texture::Target::Rectangle,
			0,
			PixelDataInternalFormat::DepthComponent,
			0, 0,
			width,
			height,
			0
		);

		gl.ClearDepth(1.0f);
		gl.Clear().ColorBuffer().DepthBuffer();

		draw_prog.Use();
		gl.DepthFunc(CompareFn::Less);
		gl.CullFace(Face::Back);
		draw_prog.camera_matrix.Set(camera);
		draw_prog.model_matrix.Set(Mat4f());

		objects.Draw();
	}
Esempio n. 11
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    ParallaxExample()
      : prog(make_prog())
      , projection_matrix(prog, "ProjectionMatrix")
      , camera_matrix(prog, "CameraMatrix")
      , camera_position(prog, "CameraPosition")
      , light_position(prog, "LightPosition")
      , shape(
          List("Position")("TexCoord").Get(),
          shapes::Plane(
            Vec3f(),
            Vec3f(1.0f, 0.0f, 0.0f),
            Vec3f(0.0f, 0.0f, -1.0f),
            32,
            32)) {
        shape.UseInProgram(prog);

        auto tex_image = images::LoadTexture("stones_color_hmap");

        Texture::Active(0);
        try {
            UniformSampler(prog, "ColorMap").Set(0);
            gl.Bound(Texture::Target::_2D, color_tex)
              .MinFilter(TextureMinFilter::LinearMipmapLinear)
              .MagFilter(TextureMagFilter::Linear)
              .WrapS(TextureWrap::Repeat)
              .WrapT(TextureWrap::Repeat)
              .Image2D(tex_image)
              .GenerateMipmap();
        } catch(Error&) {
        }

        Texture::Active(1);
        try {
            UniformSampler(prog, "BumpMap").Set(1);
            gl.Bound(Texture::Target::_2D, bump_tex)
              .MinFilter(TextureMinFilter::LinearMipmapLinear)
              .MagFilter(TextureMagFilter::Linear)
              .WrapS(TextureWrap::Repeat)
              .WrapT(TextureWrap::Repeat)
              .Image2D(
                images::NormalMap(tex_image, images::NormalMap::FromAlpha()))
              .GenerateMipmap();
        } catch(Error&) {
        }

        gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
        gl.ClearDepth(1.0f);

        (Capability::DepthTest) << true;
        (Capability::CullFace) << false;

        (Functionality::ClipDistance | 0) << true;
        (Functionality::ClipDistance | 1) << true;
        (Functionality::ClipDistance | 2) << true;
    }
Esempio n. 12
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	void Render(double time)
	{
		float o = 2;
		float s = 24;
		prog.offset.Set(
			GLfloat(CosineWave(time/59.0)*o),
			GLfloat(SineWave(time/61.0)*o)
		);
		prog.scale.Set(GLfloat(s + 1 + SineWave(time / 19.0)*s));

		screen.Draw();
	}
Esempio n. 13
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	BarDisplay(void)
	 : gl()
	 , side(128)
	 , shadow_size(512)
	 , cube(
		List("Position")("Normal").Get(),
		shapes::Cube(0.95, 1.0, 0.95, 0.0, 0.5, 0.0)
	), display_vao(cube.VAOForProgram(display_prog))
	 , shadow_vao(cube.VAOForProgram(shadow_prog))
	{
		init_shadows();
		init_heights();
		init_offsets();

		auto light_proj = CamMatrixf::PerspectiveX(
			Degrees(74),
			1.0,
			1, 3*side
		);
		display_prog.light_proj_matrix.Set(light_proj);
		shadow_prog.projection_matrix.Set(light_proj);
		gl.PolygonOffset(4.0, 4.0);
	}
Esempio n. 14
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    ParallaxMapExample()
      : prog(make())
      , projection_matrix(prog, "ProjectionMatrix")
      , camera_matrix(prog, "CameraMatrix")
      , model_matrix(prog, "ModelMatrix")
      , camera_position(prog, "CameraPosition")
      , light_position(prog, "LightPosition")
      , shape(
          List("Position")("Normal")("Tangent")("TexCoord").Get(),
          shapes::Torus(1.0f, 0.5, 72, 48)) {
        shape.UseInProgram(prog);

        auto tex_image = images::LoadTexture("bricks_color_hmap");

        Texture::Active(0);
        try {
            UniformSampler(prog, "ColorMap").Set(0);
            gl.Bound(Texture::Target::_2D, color_tex)
              .MinFilter(TextureMinFilter::LinearMipmapLinear)
              .MagFilter(TextureMagFilter::Linear)
              .WrapS(TextureWrap::Repeat)
              .WrapT(TextureWrap::Repeat)
              .Image2D(tex_image)
              .GenerateMipmap();
        } catch(Error&) {
        }

        Texture::Active(1);
        try {
            UniformSampler(prog, "BumpMap").Set(1);
            gl.Bound(Texture::Target::_2D, bump_tex)
              .MinFilter(TextureMinFilter::LinearMipmapLinear)
              .MagFilter(TextureMagFilter::Linear)
              .WrapS(TextureWrap::Repeat)
              .WrapT(TextureWrap::Repeat)
              .Image2D(
                images::NormalMap(tex_image, images::NormalMap::FromAlpha()))
              .GenerateMipmap();
        } catch(Error&) {
        }

        gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
        gl.ClearDepth(1.0f);
        gl.Enable(Capability::DepthTest);
        gl.Disable(Capability::CullFace);

        gl.Enable(Functionality::ClipDistance, 0);
        gl.Enable(Functionality::ClipDistance, 1);
        gl.Enable(Functionality::ClipDistance, 2);
    }
Esempio n. 15
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    void Render(ExampleClock& clock) {
        gl.Clear().ColorBuffer().DepthBuffer();

        double time = clock.Now().Seconds();

        auto langle = FullCircles(time / 23.0);
        light_position.Set(
          GLfloat(Cos(langle) * 20.0),
          GLfloat((1.2 + Sin(langle)) * 15.0),
          GLfloat(Sin(langle) * 20.0));

        double x = SineWave(time / 13.0);
        if(x + 0.93 < 0.0)
            clock.Pace(0.2);
        else
            clock.Pace(1.0);

        auto camera = CamMatrixf::Orbiting(
          Vec3f(),
          GLfloat(9.5 + x * 5.1),
          FullCircles(time / 17.0),
          Degrees(SineWave(time / 20.0) * 89));

        camera_matrix.Set(camera);
        camera_position.Set(camera.Position());

        model_matrix.Set(
          ModelMatrixf::TranslationX(+2.0f) *
          ModelMatrixf::RotationX(FullCircles(time / 13.0)));
        shape.Draw();

        model_matrix.Set(
          ModelMatrixf::TranslationX(-2.0f) *
          ModelMatrixf::RotationZ(FullCircles(time / 11.0)));
        shape.Draw();
    }
Esempio n. 16
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	void Use(void)
	{
		gl.ClearDepth(1.0f);
		gl.ClearColor(0.8f, 0.8f, 0.8f, 0.0f);

		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::CullFace);
		gl.CullFace(Face::Back);

		dfb.Bind(Framebuffer::Target::Draw);
		gl.Viewport(width, height);

		prog.Use();
		cube.Use();

		SetProjection();
	}
	void Use(void)
	{
		gl.ClearDepth(1.0f);
		gl.ClearColor(0.9f, 0.4f, 0.4f, 1.0f);

		gl.Enable(Capability::DepthTest);
		gl.Enable(Capability::CullFace);
		gl.CullFace(Face::Back);

		fbo.Bind(Framebuffer::Target::Draw);
		gl.Viewport(tex_side, tex_side);

		prog.Use();
		shape.Use();

		projection_matrix.Set(CamMatrixf::PerspectiveX(Degrees(48), 1.0, 1, 100));
	}
Esempio n. 18
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    void Render(double time) {
        gl.Clear().ColorBuffer().DepthBuffer();

        auto camera = CamMatrixf::Orbiting(
          Vec3f(),
          2.9f,
          FullCircles(time / 17.0),
          Degrees(45 + SineWave(time / 20.0) * 40));

        camera_matrix.Set(camera);
        camera_position.Set(camera.Position());

        auto langle = FullCircles(time / 31.0);
        light_position.Set(
          GLfloat(Cos(langle) * 20.0f),
          GLfloat((1.2 + Sin(langle)) * 15.0f),
          GLfloat(Sin(langle) * 20.0f));

        shape.Draw();
    }
Esempio n. 19
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	void Render(double time)
	{
		gl.Clear().ColorBuffer().DepthBuffer();

		camera_matrix.Set(
			CamMatrixf::Orbiting(
				Vec3f(),
				3.0,
				Degrees(time * 35),
				Degrees(SineWave(time / 20.0) * 60)
			)
		);

		model_matrix.Set(ModelMatrixf::RotationX(FullCircles(time * 0.25)));

		assert(thread_ready);
		thread_ready->Wait();

		cube.Draw();

		parent_ready.Signal();
	}
Esempio n. 20
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	void Render(double time)
	{
		GLfloat bs_rad = shape.BoundingSphere().Radius()*1.2f;

		auto light =
			CamMatrixf::Orbiting(
				shape.BoundingSphere().Center(),
				shape.BoundingSphere().Radius()*10.0f,
				FullCircles(time / 23.0),
				Degrees(-CosineWave(time / 31.0) * 80)
			);

		auto camera =
			CamMatrixf::Orbiting(
				shape.BoundingSphere().Center(),
				shape.BoundingSphere().Radius()*
				GLfloat(3.2+SineWave(time / 23.0)*0.8),
				FullCircles(time / 19.0),
				Degrees(SineWave(time / 21.0) * 80)
			);

		GLfloat cam_tgt_dist = Distance(
			shape.BoundingSphere().Center(),
			camera.Position()
		);

		auto cam_proj =
			CamMatrixf::PerspectiveX(
				Degrees(45),
				width, height,
				cam_tgt_dist-bs_rad,
				cam_tgt_dist+bs_rad
			);

		auto model =
			ModelMatrixf::RotationZ(Degrees(SineWave(time / 21.0)*25))*
			ModelMatrixf::Translation(0.0f,-bs_rad*0.25f, 0.0f);

		data_prog.Use();
		data_prog.camera_matrix.Set(cam_proj*camera);
		data_prog.model_matrix.Set(model);
		data_prog.camera_position.Set(camera.Position());
		data_prog.light_position.Set(light.Position());

		data_buffer.Bind();

		gl.Enable(Capability::DepthTest);
		gl.Clear().ColorBuffer().DepthBuffer();

		shape.Use();
		shape.Draw();

		draw_prog.Use();
		draw_prog.slider.Set(GLfloat(CosineWave01(time / 11.0)*width));

		DefaultFramebuffer().Bind(Framebuffer::Target::Draw);

		gl.Disable(Capability::DepthTest);
		gl.Clear().ColorBuffer();

		screen.Use();
		screen.Draw();
	}
Esempio n. 21
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    SkyBoxExample()
      : sky_box(List("Position").Get(), shapes::SkyBox())
      , shape(List("Position")("Normal").Get(), shapes::WickerTorus())
      , sky_box_prog()
      , sky_box_projection_matrix(sky_box_prog, "ProjectionMatrix")
      , sky_box_camera_matrix(sky_box_prog, "CameraMatrix")
      , shape_projection_matrix(shape_prog, "ProjectionMatrix")
      , shape_camera_matrix(shape_prog, "CameraMatrix")
      , shape_model_matrix(shape_prog, "ModelMatrix")
      , sky_box_sun_position(sky_box_prog, "SunPosition")
      , shape_sun_position(shape_prog, "SunPosition")
      , shape_camera_position(shape_prog, "CameraPosition") {
        VertexShader sky_box_vs;
        sky_box_vs.Source(
          "#version 140\n"
          "uniform mat4 ProjectionMatrix, CameraMatrix;"
          "mat4 Matrix = ProjectionMatrix*CameraMatrix;"

          "in vec3 Position;"
          "out vec3 vertTexCoord;"
          "void main()"
          "{"
          "	gl_Position = Matrix * vec4(Position * 100.0, 1.0);"
          "	vertTexCoord = Position;"
          "}");
        sky_box_vs.Compile();
        sky_box_prog.AttachShader(sky_box_vs);

        VertexShader shape_vs;
        shape_vs.Source(
          "#version 140\n"

          "uniform vec3 SunPosition;"
          "uniform vec3 CameraPosition;"
          "uniform mat4  ProjectionMatrix,CameraMatrix,ModelMatrix;"

          "in vec4 Position;"
          "in vec3 Normal;"

          "out vec3 vertNormal, vertViewRefl, vertLightDir;"

          "void main()"
          "{"
          "	gl_Position = ModelMatrix * Position;"
          "	vertNormal = mat3(ModelMatrix)*Normal;"
          "	vertViewRefl = reflect("
          "		gl_Position.xyz - CameraPosition,"
          "		vertNormal"
          "	);"
          "	vertLightDir = SunPosition - gl_Position.xyz;"
          "	gl_Position = ProjectionMatrix*CameraMatrix*gl_Position;"
          "}");
        shape_vs.Compile();
        shape_prog.AttachShader(shape_vs);

        FragmentShader sky_box_fs;
        sky_box_fs.Source(
          "#version 140\n"

          "in vec3 vertTexCoord;"

          "out vec3 fragColor;"

          "vec3 sky_color(vec3 vd);"

          "void main()"
          "{"
          "	fragColor = sky_color(normalize(vertTexCoord));"
          "}");
        sky_box_fs.Compile();
        sky_box_prog.AttachShader(sky_box_fs);

        FragmentShader shape_fs;
        shape_fs.Source(
          "#version 140\n"

          "in vec3 vertNormal, vertViewRefl, vertLightDir;"

          "out vec3 fragColor;"

          "vec3 sky_color(vec3 vd);"

          "void main()"
          "{"
          "	float l = max(dot(normalize(vertNormal), "
          "normalize(vertLightDir))+0.1, 0.0);"
          "	float a = 0.1;"
          "	fragColor = "
          "		0.1*vec3(1.0, 1.0, 1.0)*(a+l)+"
          "		0.9*sky_color(normalize(vertViewRefl));"
          "}");
        shape_fs.Compile();
        shape_prog.AttachShader(shape_fs);

        FragmentShader sky_fs;
        sky_fs.Source(
          "#version 140\n"

          "const float WorldRadius = 6371000;"
          "const float AtmThickness = 50000;"
          "const vec3 AirColor = vec3(0.32, 0.36, 0.45);"
          "const vec3 LightColor = vec3(1.0, 1.0, 1.0);"

          "uniform vec3 SunPosition;"

          "uniform samplerCube EnvMap;"

          "float atm_intersection(vec3 v)"
          "{"
          "	const vec3 c = vec3(0.0, -WorldRadius, 0.0);"
          "	const float r = WorldRadius + AtmThickness;"
          "	const float c_c = dot(-c, -c);"
          "	float v_c = dot( v, -c);"
          "	return (-v_c + sqrt(v_c*v_c - c_c + r*r))/AtmThickness;"
          "}"

          "vec3 sky_color(vec3 vd)"
          "{"
          "	vec3 up = vec3(0.0, 1.0, 0.0);"
          "	vec3 ld = normalize(SunPosition);"
          "	vec4 cl = texture(EnvMap, vd);"
          "	float ai = atm_intersection(vd);"
          "	float al = max(dot(ld, up) + 0.12, 0.0);"
          "	float vl = max(dot(vd, ld), 0.0);"
          "	float ct = (1.0-cl.a)*cl.b;"
          "	vec3 ac = max(LightColor-AirColor*pow(ai, 0.33), vec3(0.0, 0.0, "
          "0.0));"

          "	vec3 Sun = "
          "		ac*(vl>0.995+0.004*al ? 1.0:0.0);"

          "	vec3 Air = "
          "		min(AirColor*sqrt(pow(al,0.25)*ai), vec3(al, al, al)*1.5)+"
          "		ac*pow(min(vl+0.001*ai, 1.0), 1024.0/pow(ai, 2.0))+"
          "		ac*(vl/(1.0+pow(3.0*al, 8.0)))*pow(ai, 0.6)*0.5;"

          "	vec3 Clouds ="
          "		ac*pow(min(vl*(cl.g+cl.b), 1.015), 64.0)*pow(ct, 2.0)+"
          "		ac*pow(min(vl*cl.g+cl.b, 1.020), 32.0)*ct+"
          "		ac*pow(min(vl*cl.g*cl.b, 1.010), 16.0)*pow(ct, 0.5)+"
          "		ac*0.7*min(cl.g + cl.b*0.5, 1.0)*al+"
          "		ac*(cl.g*(1.0-cl.b*0.2)*5.0)*pow(1.0-al, 2.0)*(al)+"
          "		LightColor*0.5*min(al + cl.g*0.4+cl.b*0.1, 1.0)*sqrt(al);"

          "	return mix(Air, Clouds, cl.a*(1.0-cl.r*0.8))+Sun*(1.0-cl.a);"
          "}");
        sky_fs.Compile();
        sky_box_prog.AttachShader(sky_fs);
        shape_prog.AttachShader(sky_fs);

        sky_box_prog.Link();
        sky_box.UseInProgram(sky_box_prog);

        shape_prog.Link();
        shape.UseInProgram(shape_prog);

        {
            ProgramUniformSampler(sky_box_prog, "EnvMap").Set(0);
            ProgramUniformSampler(shape_prog, "EnvMap").Set(0);
            Texture::Active(0);

            gl.Bound(Texture::Target::CubeMap, env_map)
              .MinFilter(TextureMinFilter::Linear)
              .MagFilter(TextureMagFilter::Linear)
              .WrapS(TextureWrap::ClampToEdge)
              .WrapT(TextureWrap::ClampToEdge)
              .WrapR(TextureWrap::ClampToEdge);

            Texture::ImageCM(
              0, images::LoadTexture("clouds01-cm_0", false, false));
            Texture::ImageCM(
              1, images::LoadTexture("clouds01-cm_1", false, false));
            Texture::ImageCM(
              2, images::LoadTexture("clouds01-cm_2", false, false));
            Texture::ImageCM(
              3, images::LoadTexture("clouds01-cm_3", false, false));
            Texture::ImageCM(
              4, images::LoadTexture("clouds01-cm_4", false, false));
            Texture::ImageCM(
              5, images::LoadTexture("clouds01-cm_5", false, false));
        }

        gl.ClearColor(0.0f, 0.0f, 0.0f, 0.0f);
        gl.ClearDepth(1.0f);
        gl.Enable(Capability::DepthTest);
    }
Esempio n. 22
0
	void Render(double time)
	{
		gl.Clear().ColorBuffer().DepthBuffer();
		//
		auto camera = CamMatrixf::Orbiting(
			Vec3f(0.0, 1.5, 0.0),
			7.0 + SineWave(time / 11.0)*1.5,
			FullCircles(time / 19.0),
			Degrees(SineWave(time / 20.0) * 30 + 35)
		);
		cube_prog.camera_matrix = camera;
		cube_prog.camera_position = camera.Position();


		// shiny gray/blue checkered cube
		cube_prog.frag_subroutines.Apply(cube_prog.frag_shiny_checker);

		cube_prog.specular_factor = 32;
		cube_prog.color_1 = Vec3f(0.9, 0.8, 0.7);
		cube_prog.color_2 = Vec3f(0.3, 0.4, 0.5);
		cube_prog.tex_scale = Vec2f(4, 4);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation( 2.0, 0.0, 0.0)*
			ModelMatrixf::RotationX(Degrees(25 * time));
		cube.Draw();

		// shiny textured cube
		cube_prog.frag_subroutines.Apply(cube_prog.frag_shiny_texture);

		cube_prog.specular_factor = 16;
		cube_prog.tex_scale = Vec2f(1, 1);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation(-2.0, 0.0, 0.0)*
			ModelMatrixf::RotationX(Degrees(-17 * time));
		cube.Draw();

		// shiny yellow/black striped cube
		cube_prog.frag_subroutines.Apply(cube_prog.frag_shiny_strips);

		cube_prog.specular_factor = 32;
		cube_prog.color_1 = Vec3f(0.9, 0.9, 0.1);
		cube_prog.color_2 = Vec3f(0.1, 0.1, 0.1);
		cube_prog.tex_scale = Vec2f(16, 16);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation( 0.0, 2.0, 0.0)*
			ModelMatrixf::RotationY(Degrees(37 * time));
		cube.Draw();

		// shiny gray/green spiral cube
		cube_prog.frag_subroutines.Apply(cube_prog.frag_shiny_spiral);

		cube_prog.specular_factor = 24;
		cube_prog.color_1 = Vec3f(0.9, 0.9, 0.9);
		cube_prog.color_2 = Vec3f(0.4, 0.9, 0.4);
		cube_prog.tex_scale = Vec2f(1, 1);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation( 0.0,-2.0, 0.0)*
			ModelMatrixf::RotationY(Degrees(-13 * time));
		cube.Draw();

		// dull white/red striped cube
		cube_prog.frag_subroutines
			.Assign(
				cube_prog.pixel_light_func,
				cube_prog.dull
			).Assign(
				cube_prog.pixel_color_func,
				cube_prog.strips
			).Apply();

		cube_prog.specular_factor = 32;
		cube_prog.color_2 = Vec3f(1.0, 1.0, 1.0);
		cube_prog.color_1 = Vec3f(0.9, 0.2, 0.2);
		cube_prog.tex_scale = Vec2f(8, 6);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation( 0.0, 0.0, 2.0)*
			ModelMatrixf::RotationZ(Degrees(27 * time));
		cube.Draw();

		// dull textured cube
		cube_prog.frag_subroutines
			.Assign(
				cube_prog.pixel_color_func,
				cube_prog.texture_bgr
			).Apply();

		cube_prog.tex_scale = Vec2f(1, 1);
		cube_prog.model_matrix =
			ModelMatrixf::RotationY(FullCircles(time / 7.0))*
			ModelMatrixf::Translation( 0.0, 0.0,-2.0)*
			ModelMatrixf::RotationZ(Degrees(-23 * time));
		cube.Draw();
	}
Esempio n. 23
0
	TriangleExample(void)
	 : projection_matrix(prog, "ProjectionMatrix")
	 , camera_matrix(prog, "CameraMatrix")
	 , camera_position(prog, "CameraPosition")
	 , light_position(prog, "LightPosition")
	 , shape(
		List("Position")("TexCoord").Get(),
		shapes::Plane(
			Vec3f(),
			Vec3f(1.0f, 0.0f, 0.0f),
			Vec3f(0.0f, 0.0f,-1.0f),
			32, 32
		)
	)
	{
		VertexShader vs;
		vs.Source(StrLit(
			"#version 330\n"
			"in vec3 Position;"
			"in vec2 TexCoord;"
			"out vec2 vertTexCoord;"
			"void main(void)"
			"{"
			"	gl_Position = vec4(Position, 1.0);"
			"	vertTexCoord = TexCoord;"
			"}"
		)).Compile();
		prog.AttachShader(vs);

		GeometryShader gs;
		gs.Source(StrLit(
			"#version 330\n"
			"#extension GL_ARB_gpu_shader5 : enable\n"
			"layout(triangles, invocations = 7) in;"
			"layout(triangle_strip, max_vertices = 21) out;"

			"uniform mat4 ProjectionMatrix, CameraMatrix;"
			"mat4 Matrix = ProjectionMatrix * CameraMatrix;"
			"uniform vec3 CameraPosition;"

			"in vec2 vertTexCoord[3];"

			"out gl_PerVertex {"
			"	vec4 gl_Position;"
			"	float gl_ClipDistance[3];"
			"};"
			"flat out mat3 geomPositionFront;"
			"flat out mat3 geomTexCoordFront;"
			"flat out vec3 geomWFront;"
			"noperspective out vec3 geomBarycentric;"
			"out vec3 geomPosition;"
			"out vec3 geomTexCoord;"

			"void main(void)"
			"{"
			"	vec4 world_pos[8*3];"
			"	vec3 tex_coord[8*3];"

			"	vec4 view_pos[8*3];"
			"	vec3 screen_pos[8*3];"
			"	bool front_facing[8];"

			"	int ft = gl_InvocationID+1;"

			"	for(int pass=0; pass!=2; ++pass)"
			"	{"
			"		bool first = pass == 0;"
			"		if(((ft == 0) && first) || (((ft != 0) && !first)))"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = 2-v;"
			"				world_pos[0+v] = gl_in[w].gl_Position;"
			"				tex_coord[0+v] = vec3(vertTexCoord[w], 0.0);"
			"			}"
			"		}"

			"		vec4 n = vec4(-0.15 * normalize(cross("
			"			gl_in[1].gl_Position.xyz-gl_in[0].gl_Position.xyz,"
			"			gl_in[2].gl_Position.xyz-gl_in[0].gl_Position.xyz "
			"		)), 0.0);"

			"		if(((ft == 1) && first) || (((ft != 1) && !first)))"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				world_pos[3+v] = gl_in[v].gl_Position + n;"
			"				tex_coord[3+v] = vec3(vertTexCoord[v], 1.0);"
			"			}"
			"		}"

			"		for(int v=0; v!=3; ++v)"
			"		{"
			"			int w = (v+1)%3;"
			"			int k = 2+2*v;"
			"			if(((ft == k) && first) || (((ft != k) && !first)))"
			"			{"
			"				world_pos[6+0+v*6] = gl_in[v].gl_Position;"
			"				tex_coord[6+0+v*6] = vec3(vertTexCoord[v], 0.0);"
			"				world_pos[6+1+v*6] = gl_in[w].gl_Position;"
			"				tex_coord[6+1+v*6] = vec3(vertTexCoord[w], 0.0);"
			"				world_pos[6+2+v*6] = gl_in[v].gl_Position + n;"
			"				tex_coord[6+2+v*6] = vec3(vertTexCoord[v], 1.0);"
			"			}"

			"			k = 3+2*v;"
			"			if(((ft == k) && first) || (((ft != k) && !first)))"
			"			{"
			"				world_pos[6+3+v*6] = gl_in[w].gl_Position;"
			"				tex_coord[6+3+v*6] = vec3(vertTexCoord[w], 0.0);"
			"				world_pos[6+4+v*6] = gl_in[w].gl_Position + n;"
			"				tex_coord[6+4+v*6] = vec3(vertTexCoord[w], 1.0);"
			"				world_pos[6+5+v*6] = gl_in[v].gl_Position + n;"
			"				tex_coord[6+5+v*6] = vec3(vertTexCoord[v], 1.0);"
			"			}"
			"		}"

			"		for(int t=first?ft:0; t!=8; ++t)"
			"		{"
			"			if(!first && (t == ft)) continue;"
			"			int o = t*3;"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = o+v;"
			"				view_pos[w] = Matrix * world_pos[w];"
			"				screen_pos[w] = view_pos[w].xyz/view_pos[w].w;"
			"			}"
			"			front_facing[t] = cross("
			"				screen_pos[o+1]-screen_pos[o+0],"
			"				screen_pos[o+2]-screen_pos[o+0] "
			"			).z < 0.0;"
			"			if(first) break;"
			"		}"
			"		if(first && !front_facing[ft]) return;"
			"	}"

			"	int o = ft*3;"
			"	vec4 clip_plane[3];"
			"	for(int v=0; v!=3; ++v)"
			"	{"
			"		int w = (v+1)%3;"
			"		vec3 p0 = world_pos[o+v].xyz;"
			"		vec3 p1 = world_pos[o+w].xyz;"
			"		vec3 p2 = CameraPosition;"
			"		vec3 pv = normalize(cross(p1-p0, p2-p0));"
			"		clip_plane[v] = vec4(pv, -dot(pv, p0));"
			"	}"
			"	vec3 lo = CameraPosition;"
			"	vec3 p0 = world_pos[o+0].xyz;"
			"	vec3 pu = world_pos[o+1].xyz-p0;"
			"	vec3 pv = world_pos[o+2].xyz-p0;"
			"	vec3 lp = lo-p0;"

			"	float w0 = view_pos[o+0].w;"
			"	float wu = view_pos[o+1].w-w0;"
			"	float wv = view_pos[o+2].w-w0;"

			"	vec3 t0 = tex_coord[o+0];"
			"	vec3 tu = tex_coord[o+1]-t0;"
			"	vec3 tv = tex_coord[o+2]-t0;"

			"	for(int bt=0; bt!=8; ++bt)"
			"	{"
			"		int k = bt*3;"
			"		if((ft != bt) && !front_facing[bt])"
			"		{"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				vec3 lt = world_pos[k+v].xyz;"
			"				mat3 im = mat3(lo-lt, pu, pv);"
			"				vec3 ic = inverse(im)*lp;"
			"				float s = ic.y;"
			"				float t = ic.z;"

			"				geomPositionFront[v] = p0+pu*s+pv*t;"
			"				geomTexCoordFront[v] = t0+tu*s+tv*t;"
			"				geomWFront[v] = w0+wu*s+wv*t;"
			"			}"
			"			for(int v=0; v!=3; ++v)"
			"			{"
			"				int w = k+v;"
			"				gl_Position = view_pos[w];"
			"				for(int c=0; c!=3; ++c)"
			"				{"
			"					gl_ClipDistance[c] = dot("
			"						clip_plane[c],"
			"						world_pos[w]"
			"					);"
			"				}"
			"				geomPosition = world_pos[w].xyz;"
			"				geomTexCoord = tex_coord[w];"
			"				geomBarycentric = vec3(0.0);"
			"				geomBarycentric[v] = 1.0;"

			"				EmitVertex();"
			"			}"
			"			EndPrimitive();"
			"		}"
			"	}"
			"}"
		)).Compile();
		prog.AttachShader(gs);

		FragmentShader fs;
		fs.Source(StrLit(
			"#version 330\n"

			"uniform float Time;"
			"uniform sampler2D ColorMap;"
			"uniform sampler2D BumpMap;"
			"uniform vec3 LightPosition;"

			"flat in mat3 geomPositionFront;"
			"flat in mat3 geomTexCoordFront;"
			"flat in vec3 geomWFront;"
			"noperspective in vec3 geomBarycentric;"
			"in vec3 geomPosition;"
			"in vec3 geomTexCoord;"

			"out vec3 fragColor;"

			"vec3 vcdiv(vec3 a, vec3 b)"
			"{"
			"	return vec3(a.x/b.x, a.y/b.y, a.z/b.z);"
			"}"

			"void main(void)"
			"{"
			"	const vec3 one = vec3(1.0, 1.0, 1.0);"

			"	vec3 bzfv = vcdiv(geomBarycentric,geomWFront);"

			"	vec3 p0 = geomPosition;"
			"	vec3 p1 = (geomPositionFront*bzfv)/dot(one,bzfv);"
			"	vec3 tc0 = geomTexCoord;"
			"	vec3 tc1 = (geomTexCoordFront*bzfv)/dot(one,bzfv);"
			"	ivec2 ts = textureSize(BumpMap, 0);"
			"	int mts = max(ts.x, ts.y);"
			"	vec2 dtc = tc1.xy - tc0.xy;"
			"	float mdtc = max(abs(dtc.x), abs(dtc.y));"

			"	int nsam = max(min(int(mdtc*mts), mts/2), 1);"
			"	float step = 1.0 / nsam;"
			"	for(int s=0; s<=nsam; ++s)"
			"	{"
			"		vec3 tc = mix(tc1, tc0, s*step);"
			"		vec4 bm = texture(BumpMap, tc.xy);"
			"		if(tc.z <= bm.w)"
			"		{"
			"			vec3 p = mix(p1, p0, s*step);"
			"			vec3 ldir = normalize(LightPosition - p);"
			"			float l = max(dot(ldir, bm.xzy), 0.0)*1.3;"
			"			fragColor = texture(ColorMap, tc.xy).rgb*l;"
			"			return;"
			"		}"
			"	}"
			"	discard;"
			"}"
		)).Compile();
		prog.AttachShader(fs);

		prog.Link();
		prog.Use();

		shape.UseInProgram(prog);

		auto tex_image = images::LoadTexture("stones_color_hmap");

		Texture::Active(0);
		try
		{
			UniformSampler(prog, "ColorMap").Set(0);
			auto bound_tex = Bind(color_tex, Texture::Target::_2D);
			bound_tex.Image2D(tex_image);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
		catch(Error&){ }

		Texture::Active(1);
		try
		{
			UniformSampler(prog, "BumpMap").Set(1);
			auto bound_tex = Bind(bump_tex, Texture::Target::_2D);
			bound_tex.Image2D(
				images::NormalMap(
					tex_image,
					images::NormalMap::FromAlpha()
				)
			);
			bound_tex.GenerateMipmap();
			bound_tex.MinFilter(TextureMinFilter::LinearMipmapLinear);
			bound_tex.MagFilter(TextureMagFilter::Linear);
			bound_tex.WrapS(TextureWrap::Repeat);
			bound_tex.WrapT(TextureWrap::Repeat);
		}
		catch(Error&){ }

		gl.ClearColor(0.1f, 0.1f, 0.1f, 0.0f);
		gl.ClearDepth(1.0f);
		gl.Enable(Capability::DepthTest);
		gl.Disable(Capability::CullFace);

		gl.Enable(Functionality::ClipDistance, 0);
		gl.Enable(Functionality::ClipDistance, 1);
		gl.Enable(Functionality::ClipDistance, 2);
	}
Esempio n. 24
0
	void RenderShadowMap(GLuint size)
	{
		// matrices
		auto lt_proj= CamMatrixf::PerspectiveX(Degrees(12), 1.0, 85.0, 110.0);
		auto light = CamMatrixf::LookingAt(light_position, Vec3f());
		// setup the texture
		Texture::Active(shadow_tex_unit);

		mask_prog.Use();
		Uniform<Mat4f>(mask_prog, "LightMatrix").Set(lt_proj*light);
		UniformSampler(mask_prog, "ShadowMap").Set(GLuint(shadow_tex_unit));

		draw_prog.Use();
		Uniform<Mat4f>(draw_prog, "LightMatrix").Set(lt_proj*light);
		UniformSampler(draw_prog, "ShadowMap").Set(GLuint(shadow_tex_unit));

		Texture::Target tex_tgt = Texture::Target::_2D;
		shadow_map.Bind(tex_tgt);
		Texture::MinFilter(tex_tgt, TextureMinFilter::Linear);
		Texture::MagFilter(tex_tgt, TextureMagFilter::Linear);
		Texture::WrapS(tex_tgt, TextureWrap::ClampToEdge);
		Texture::WrapT(tex_tgt, TextureWrap::ClampToEdge);
		Texture::CompareMode(tex_tgt, TextureCompareMode::CompareRefToTexture);
		Texture::Image2D(
			tex_tgt,
			0,
			PixelDataInternalFormat::DepthComponent32,
			size, size,
			0,
			PixelDataFormat::DepthComponent,
			PixelDataType::Float,
			nullptr
		);

		// create shadow program
		ShadowProgram shadow_prog(vert_shader);

		// VAO for the meshes in shadow program
		VertexArray vao = meshes.VAOForProgram(shadow_prog);
		vao.Bind();

		// FBO for offscreen rendering of the shadow map
		Framebuffer::Target fbo_tgt = Framebuffer::Target::Draw;
		Framebuffer fbo;
		fbo.Bind(fbo_tgt);
		Framebuffer::AttachTexture(fbo_tgt, FramebufferAttachment::Depth, shadow_map, 0);

		// RBO for offscreen rendering
		Renderbuffer::Target rbo_tgt = Renderbuffer::Target::Renderbuffer;
		Renderbuffer rbo;
		rbo.Bind(rbo_tgt);
		Renderbuffer::Storage(rbo_tgt, PixelDataInternalFormat::RGBA, size, size);
		Framebuffer::AttachRenderbuffer(fbo_tgt, FramebufferAttachment::Color, rbo);

		// setup the matrices
		shadow_prog.projection_matrix.Set(lt_proj);
		shadow_prog.camera_matrix.Set(light);

		// setup and clear the viewport
		gl.Viewport(size, size);
		gl.Clear().DepthBuffer();

		// draw the meshes
		gl.PolygonOffset(1.0, 1.0);
		gl.Enable(Capability::PolygonOffsetFill);
		meshes.Draw();
		gl.Disable(Capability::PolygonOffsetFill);
		gl.Finish();

		// bind the default framebuffer
		DefaultFramebuffer().Bind(Framebuffer::Target::Draw);
	}
Esempio n. 25
0
	void RenderOnscreen(double)
	{
		screen_prog.Use();
		screen.Use();
		screen.Draw();
	}
Esempio n. 26
0
	void operator()(void)
	{
		gl.Use(prog);
		mesh.Use();
		mesh.Draw();
	}