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Initial GPU vector rendering as a sample (#524)
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312
korge-sandbox/src/commonMain/kotlin/MainGpuVectorRendering.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,312 @@ | ||
| import com.soywiz.kds.* | ||
| import com.soywiz.klogger.* | ||
| import com.soywiz.kmem.* | ||
| import com.soywiz.korag.* | ||
| import com.soywiz.korag.shader.* | ||
| import com.soywiz.korge.render.* | ||
| import com.soywiz.korge.view.* | ||
| import com.soywiz.korge.view.BlendMode | ||
| import com.soywiz.korim.bitmap.* | ||
| import com.soywiz.korim.color.* | ||
| import com.soywiz.korim.font.* | ||
| import com.soywiz.korim.format.* | ||
| import com.soywiz.korim.paint.* | ||
| import com.soywiz.korim.text.* | ||
| import com.soywiz.korim.vector.* | ||
| import com.soywiz.korim.vector.format.* | ||
| import com.soywiz.korio.file.std.* | ||
| import com.soywiz.korma.geom.* | ||
| import com.soywiz.korma.geom.shape.* | ||
| import com.soywiz.korma.geom.vector.* | ||
|
|
||
| suspend fun Stage.mainGpuVectorRendering() { | ||
| Console.log("[1]") | ||
| val korgeBitmap = resourcesVfs["korge.png"].readBitmap() | ||
| Console.log("[2]") | ||
| val tigerSvg = resourcesVfs["Ghostscript_Tiger.svg"].readSVG() | ||
| Console.log("[3]") | ||
| //AudioData(44100, AudioSamples(1, 1024)).toSound().play() | ||
|
|
||
| fun Context2d.buildGraphics() { | ||
| keep { | ||
| draw(tigerSvg) | ||
| translate(100, 200) | ||
| fill(Colors.BLUE) { | ||
| rect(-10, -10, 120, 120) | ||
| rectHole(40, 40, 80, 80) | ||
| } | ||
| fill(Colors.YELLOW) { | ||
| this.circle(100, 100, 40) | ||
| //rect(-100, -100, 500, 500) | ||
| //rectHole(40, 40, 320, 320) | ||
| } | ||
| fill(Colors.RED) { | ||
| regularPolygon(6, 30.0, x = 100.0, y = 100.0) | ||
| //rect(-100, -100, 500, 500) | ||
| //rectHole(40, 40, 320, 320) | ||
| } | ||
| } | ||
| keep { | ||
| translate(100, 20) | ||
| scale(2.0) | ||
| globalAlpha = 0.75 | ||
| fillStyle = BitmapPaint( | ||
| korgeBitmap, | ||
| Matrix().translate(50, 50).scale(0.125), | ||
| cycleX = CycleMethod.REPEAT, | ||
| cycleY = CycleMethod.REPEAT | ||
| ) | ||
| fillRect(0.0, 0.0, 100.0, 100.0) | ||
| fillStyle = | ||
| createLinearGradient(0.0, 0.0, 200.0, 200.0, transform = Matrix().scale(0.5).pretranslate(130, 30)) | ||
| .addColorStop(0.0, Colors.RED) | ||
| .addColorStop(1.0, Colors.BLUE) | ||
| fillRect(100.0, 0.0, 100.0, 100.0) | ||
| } | ||
| keep { | ||
| font = DefaultTtfFont | ||
| fontSize = 16.0 | ||
| fillStyle = Colors.WHITE | ||
| alignment = TextAlignment.TOP_LEFT | ||
| fillText("HELLO WORLD", 0.0, 16.0) | ||
| } | ||
| } | ||
|
|
||
| gpuShapeView { buildGraphics() }.xy(0, 0)//.rotation(45.degrees) | ||
| image(NativeImage(512, 512).context2d { buildGraphics() }).xy(700, 0) | ||
| image(Bitmap32(512, 512).context2d { buildGraphics() }).xy(700, 370) | ||
| } | ||
|
|
||
| inline fun Container.gpuShapeView(buildContext2d: Context2d.() -> Unit) = | ||
| GpuShapeView(buildShape { buildContext2d() }).addTo(this) | ||
|
|
||
| inline fun Container.gpuShapeView(shape: Shape, callback: @ViewDslMarker GpuShapeView.() -> Unit = {}) = | ||
| GpuShapeView(shape).addTo(this, callback) | ||
|
|
||
| class GpuShapeView(shape: Shape) : View() { | ||
| private val pointCache = FastIdentityMap<VectorPath, PointArrayList>() | ||
|
|
||
| var shape: Shape = shape | ||
| set(value) { | ||
| field = value | ||
| pointCache.clear() | ||
| } | ||
|
|
||
| companion object { | ||
| val u_Color = Uniform("u_Color", VarType.Float4) | ||
| val u_Transform = Uniform("u_Transform", VarType.Mat4) | ||
| val LAYOUT = VertexLayout(DefaultShaders.a_Pos) | ||
| val LAYOUT_FILL = VertexLayout(DefaultShaders.a_Pos, DefaultShaders.a_Tex) | ||
| val VERTEX_FILL = VertexShaderDefault { | ||
| SET(out, u_ProjMat * u_ViewMat * vec4(a_Pos, 0f.lit, 1f.lit)) | ||
| SET(v_Tex, DefaultShaders.a_Tex) | ||
| } | ||
| val PROGRAM_STENCIL = Program( | ||
| vertex = VertexShaderDefault { SET(out, u_ProjMat * u_ViewMat * vec4(a_Pos, 0f.lit, 1f.lit)) }, | ||
| fragment = FragmentShaderDefault { SET(out, vec4(1f.lit, 0f.lit, 0f.lit, 1f.lit)) }, | ||
| ) | ||
| val PROGRAM_COLOR = Program( | ||
| vertex = VERTEX_FILL, | ||
| fragment = FragmentShaderDefault { | ||
| SET(out, u_Color) | ||
| }, | ||
| ) | ||
| val PROGRAM_BITMAP = Program( | ||
| vertex = VERTEX_FILL, | ||
| fragment = FragmentShaderDefault { | ||
| // @TODO: we should convert 0..1 to texture slice coordinates | ||
| SET(out, texture2D(u_Tex, fract(vec2((vec4(v_Tex, 0f.lit, 1f.lit) * u_Transform)["xy"])))) | ||
| }, | ||
| ) | ||
| val PROGRAM_LINEAR_GRADIENT = Program( | ||
| vertex = VERTEX_FILL, | ||
| fragment = FragmentShaderDefault { | ||
| SET(out, texture2D(u_Tex, (vec4(v_Tex.x, v_Tex.y, 0f.lit, 1f.lit) * u_Transform)["xy"])) | ||
| }, | ||
| ) | ||
| } | ||
|
|
||
| private val bb = BoundsBuilder() | ||
| override fun getLocalBoundsInternal(out: Rectangle) { | ||
| shape.getBounds(out, bb) | ||
| } | ||
|
|
||
| var msaaSamples: Int = 4 | ||
|
|
||
| override fun renderInternal(ctx: RenderContext) { | ||
| ctx.flush() | ||
| val currentRenderBuffer = ctx.ag.currentRenderBufferOrMain | ||
| ctx.renderToTexture(currentRenderBuffer.width, currentRenderBuffer.height, { | ||
| renderShape(ctx, shape) | ||
| }, hasStencil = true, msamples = msaaSamples) { texture -> | ||
| ctx.useBatcher { | ||
| it.drawQuad(texture, x = 0f, y = 0f) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| private fun renderShape(ctx: RenderContext, shape: Shape) { | ||
| when (shape) { | ||
| EmptyShape -> Unit | ||
| is FillShape -> renderShape(ctx, shape) | ||
| is CompoundShape -> for (v in shape.components) renderShape(ctx, v) | ||
| is PolylineShape -> { | ||
| //println("TODO: PolylineShape not implemented. Convert into fills") | ||
| } | ||
| is TextShape -> renderShape(ctx, shape.primitiveShapes) | ||
| else -> TODO("shape=$shape") | ||
| } | ||
| } | ||
|
|
||
| private fun renderShape(ctx: RenderContext, shape: FillShape) { | ||
| val path = shape.path | ||
| val m = globalMatrix | ||
|
|
||
| val points = pointCache.getOrPut(path) { | ||
| val points = PointArrayList() | ||
| path.emitPoints2 { x, y, move -> | ||
| points.add(x, y) | ||
| } | ||
| points | ||
| } | ||
|
|
||
| val bb = BoundsBuilder() | ||
| bb.reset() | ||
|
|
||
| val data = FloatArray(points.size * 2 + 4) | ||
| for (n in 0 until points.size + 1) { | ||
| val x = points.getX(n % points.size).toFloat() | ||
| val y = points.getY(n % points.size).toFloat() | ||
| val tx = m.transformXf(x, y) | ||
| val ty = m.transformYf(x, y) | ||
| data[(n + 1) * 2 + 0] = tx | ||
| data[(n + 1) * 2 + 1] = ty | ||
| bb.add(tx, ty) | ||
| } | ||
| data[0] = ((bb.xmax + bb.xmin) / 2).toFloat() | ||
| data[1] = ((bb.ymax + bb.ymin) / 2).toFloat() | ||
|
|
||
| if (shape.path.winding != Winding.EVEN_ODD) { | ||
| error("Currently only supported EVEN_ODD winding") | ||
| } | ||
|
|
||
| val bounds = bb.getBounds() | ||
|
|
||
| ctx.dynamicVertexBufferPool { vertices -> | ||
| vertices.upload(data) | ||
| ctx.batch.updateStandardUniforms() | ||
|
|
||
| ctx.batch.simulateBatchStats(points.size + 2) | ||
|
|
||
| val scissor: AG.Scissor? = AG.Scissor().setTo( | ||
| //bounds | ||
| Rectangle.fromBounds(bounds.left.toInt(), bounds.top.toInt(), bounds.right.toIntCeil(), bounds.bottom.toIntCeil()) | ||
| ) | ||
| //val scissor: AG.Scissor? = null | ||
|
|
||
| ctx.ag.clearStencil(0, scissor = scissor) | ||
| //ctx.ag.clearStencil(0, scissor = null) | ||
| ctx.ag.draw( | ||
| vertices = vertices, | ||
| program = PROGRAM_STENCIL, | ||
| type = AG.DrawType.TRIANGLE_FAN, | ||
| vertexLayout = LAYOUT, | ||
| vertexCount = points.size + 2, | ||
| uniforms = ctx.batch.uniforms, | ||
| stencil = AG.StencilState( | ||
| enabled = true, | ||
| readMask = 0xFF, | ||
| compareMode = AG.CompareMode.ALWAYS, | ||
| referenceValue = 0xFF, | ||
| writeMask = 0xFF, | ||
| actionOnDepthFail = AG.StencilOp.KEEP, | ||
| actionOnDepthPassStencilFail = AG.StencilOp.KEEP, | ||
| actionOnBothPass = AG.StencilOp.INVERT, | ||
| ), | ||
| blending = BlendMode.NONE.factors, | ||
| colorMask = AG.ColorMaskState(false, false, false, false), | ||
| scissor = scissor, | ||
| ) | ||
| } | ||
| renderFill(ctx, shape.paint, shape.transform, bounds) | ||
| } | ||
|
|
||
| private val colorUniforms = AG.UniformValues() | ||
| private val bitmapUniforms = AG.UniformValues() | ||
| private val gradientUniforms = AG.UniformValues() | ||
| private val gradientBitmap = Bitmap32(256, 1) | ||
|
|
||
| private val colorF = FloatArray(4) | ||
|
|
||
| private fun renderFill(ctx: RenderContext, paint: Paint, transform: Matrix, bounds: Rectangle) { | ||
| if (paint is NonePaint) return | ||
|
|
||
| ctx.dynamicVertexBufferPool { vertices -> | ||
| val data = FloatArray(4 * 4) | ||
| var n = 0 | ||
| val x0 = bounds.left.toFloat() | ||
| val y0 = bounds.top.toFloat() | ||
| val x1 = bounds.right.toFloat() | ||
| val y1 = bounds.bottom.toFloat() | ||
| val w = x1 - x0 | ||
| val h = y1 - y0 | ||
| data[n++] = x0; data[n++] = y0; data[n++] = 0f; data[n++] = 0f | ||
| data[n++] = x1; data[n++] = y0; data[n++] = w; data[n++] = 0f | ||
| data[n++] = x1; data[n++] = y1; data[n++] = w; data[n++] = h | ||
| data[n++] = x0; data[n++] = y1; data[n++] = 0f; data[n++] = h | ||
|
|
||
| vertices.upload(data) | ||
| ctx.useBatcher { batch -> | ||
| batch.updateStandardUniforms() | ||
| var uniforms: AG.UniformValues = colorUniforms | ||
| var program: Program = PROGRAM_COLOR | ||
| when (paint) { | ||
| is ColorPaint -> { | ||
| val color = paint | ||
| color.writeFloat(colorF) | ||
| colorUniforms[u_Color] = colorF | ||
| program = PROGRAM_COLOR | ||
| uniforms = colorUniforms | ||
| } | ||
| is BitmapPaint -> { | ||
| bitmapUniforms[DefaultShaders.u_Tex] = AG.TextureUnit(ctx.getTex(paint.bitmap).base) | ||
| val mat = (paint.transform * transform) | ||
| mat.scale(1.0 / paint.bitmap.width, 1.0 / paint.bitmap.height) | ||
| bitmapUniforms[u_Transform] = mat.toMatrix3D() | ||
| program = PROGRAM_BITMAP | ||
| uniforms = bitmapUniforms | ||
| } | ||
| is GradientPaint -> { | ||
| paint.fillColors(gradientBitmap.dataPremult) | ||
| gradientUniforms[DefaultShaders.u_Tex] = AG.TextureUnit(ctx.getTex(gradientBitmap).base) | ||
| val mat = paint.transform * transform * paint.gradientMatrixInv | ||
| gradientUniforms[u_Transform] = mat.toMatrix3D() | ||
| program = PROGRAM_LINEAR_GRADIENT | ||
| uniforms = gradientUniforms | ||
| } | ||
| else -> { | ||
| TODO("paint=$paint") | ||
| } | ||
| } | ||
| batch.setTemporalUniforms(uniforms) { | ||
| ctx.batch.simulateBatchStats(4) | ||
| ctx.ag.draw( | ||
| vertices = vertices, | ||
| program = program, | ||
| type = AG.DrawType.TRIANGLE_FAN, | ||
| vertexLayout = LAYOUT_FILL, | ||
| vertexCount = 4, | ||
| uniforms = ctx.batch.uniforms, | ||
| stencil = AG.StencilState( | ||
| enabled = true, | ||
| compareMode = AG.CompareMode.NOT_EQUAL, | ||
| writeMask = 0, | ||
| ), | ||
| blending = BlendMode.NORMAL.factors, | ||
| colorMask = AG.ColorMaskState(true, true, true, true), | ||
| ) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } |
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