Bump3DSlide Class Reference

Inheritance diagram for Bump3DSlide:

Public Member Functions
	Bump3DSlide ()
void	load (SkScalar w, SkScalar h) override
void	drawFace (SkCanvas *canvas, SkColor color, int face, bool front, const SkM44 &localToWorld) override
Public Member Functions inherited from CubeBaseSlide
	CubeBaseSlide (Flags flags)
bool	onChar (SkUnichar uni) override
void	draw (SkCanvas *canvas) override
Click *	onFindClickHandler (SkScalar x, SkScalar y, skui::ModifierKey modi) override
bool	onClick (Click *click) override
bool	animate (double nanos) override
Public Member Functions inherited from ThreeDSlide
void	concatCamera (SkCanvas *canvas, const SkRect &area, SkScalar zscale)
Public Member Functions inherited from ClickHandlerSlide
bool	onMouse (SkScalar x, SkScalar y, skui::InputState clickState, skui::ModifierKey modifierKeys) final
Public Member Functions inherited from Slide
virtual SkISize	getDimensions () const
virtual void	gpuTeardown ()
virtual void	resize (SkScalar winWidth, SkScalar winHeight)
virtual void	unload ()
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
const SkString &	getName ()
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Protected Types inherited from CubeBaseSlide
enum	Flags { kCanRunOnCPU = 1 << 0 , kShowLightDome = 1 << 1 }
Protected Attributes inherited from CubeBaseSlide
LightOnSphere	fLight = {{200 + DX, 200 + DY}, 800, 12}
VSphere	fSphere
Flags	fFlags
Protected Attributes inherited from ThreeDSlide
float	fNear = 0.05f
float	fFar = 4
float	fAngle = SK_ScalarPI / 12
SkV3	fEye { 0, 0, 1.0f/std::tan(fAngle/2) - 1 }
SkV3	fCOA { 0, 0, 0 }
SkV3	fUp { 0, 1, 0 }
Protected Attributes inherited from Slide
SkString	fName

Detailed Description

Definition at line 358 of file 3DSlide.cpp.

Constructor & Destructor Documentation

Bump3DSlide()

Bump3DSlide::Bump3DSlide ( )

inline

Definition at line 364 of file 3DSlide.cpp.

: CubeBaseSlide(Flags(kCanRunOnCPU | kShowLightDome)) { fName = "bump3d"; }

Member Function Documentation

drawFace()

void Bump3DSlide::drawFace ( SkCanvas *  canvas, SkColor  color, int  face, bool  front, const SkM44 &  localToWorld  )

inlineoverridevirtual

Implements CubeBaseSlide.

Definition at line 408 of file 3DSlide.cpp.

                                                      {
        if (!front || !isFrontFacing(canvas->getLocalToDevice())) {
            return;
        }
 
        SkRuntimeShaderBuilder builder(fEffect);
        builder.uniform("lightPos") = fLight.computeWorldPos(fSphere);
        builder.uniform("localToWorld") = localToWorld;
        builder.uniform("localToWorldAdjInv") = normals(localToWorld);
 
        builder.child("color_map")  = fImgShader;
        builder.child("normal_map") = fBmpShader;
 
        SkPaint paint;
        paint.setColor(color);
        paint.setShader(builder.makeShader());
 
        canvas->drawRRect(fRR, paint);
    }

load()

void Bump3DSlide::load ( SkScalar  w, SkScalar  h  )

inlineoverridevirtual

Reimplemented from Slide.

Definition at line 366 of file 3DSlide.cpp.

                                               {
        fRR = SkRRect::MakeRectXY({20, 20, 380, 380}, 50, 50);
        auto img = ToolUtils::GetResourceAsImage("images/brickwork-texture.jpg");
        fImgShader = img->makeShader(SkSamplingOptions(), SkMatrix::Scale(2, 2));
        img = ToolUtils::GetResourceAsImage("images/brickwork_normal-map.jpg");
        fBmpShader = img->makeShader(SkSamplingOptions(), SkMatrix::Scale(2, 2));
 
        const char code[] = R"(
            uniform shader color_map;
            uniform shader normal_map;
 
            uniform float4x4 localToWorld;
            uniform float4x4 localToWorldAdjInv;
            uniform float3   lightPos;
 
            float3 convert_normal_sample(half4 c) {
                float3 n = 2 * c.rgb - 1;
                n.y = -n.y;
                return n;
            }
 
            half4 main(float2 p) {
                float3 norm = convert_normal_sample(normal_map.eval(p));
                float3 plane_norm = normalize(localToWorldAdjInv * norm.xyz0).xyz;
 
                float3 plane_pos = (localToWorld * p.xy01).xyz;
                float3 light_dir = normalize(lightPos - plane_pos);
 
                float ambient = 0.2;
                float dp = dot(plane_norm, light_dir);
                float scale = min(ambient + max(dp, 0), 1);
 
                return color_map.eval(p) * scale.xxx1;
            }
        )";
        auto [effect, error] = SkRuntimeEffect::MakeForShader(SkString(code));
        if (!effect) {
            SkDebugf("runtime error %s\n", error.c_str());
        }
        fEffect = effect;
    }

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The documentation for this class was generated from the following file:

• third_party/skia/tools/viewer/3DSlide.cpp