caimmetal03.key

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4 import UIKit // ID let ID_VERTEX:Int = 0 let ID_PROJECTION:Int = 1 // 1 struct VertexInfo : Initializable { var pos:vec4 = Vec4() var uv:vec2 = Vec2() var rgba:caimcolor = CAIMColor() // struct Particle { var pos:vec2 = Vec2() var radius:float = 0.0 var rgba:caimcolor = CAIMColor() var life:float = 0.0 // xy // // // (1.0~0.0) // CAIM-Metal class DrawingViewController : CAIMMetalViewController { private var pl_circle:caimmetalrenderpipeline? // GPU: private var mat_buf:caimmetalbuffer? private var circle_quads_buf:caimmetalbuffer? // // () // CPU: private var circle_quads = CAIMQuadrangles<VertexInfo>() // // private var circle_parts = [Particle]() () //

5 () // private func setupcircles() { // pl_circle = CAIMMetalRenderPipeline(vertname:"vert2d", fragname:"fragcirclecoscurve") pl_circle?.blend_type =.alpha_blend // (GPU)() circle_quads_buf = CAIMMetalBuffer(vertice:circle_quads) // let wid:float = Float(CAIMScreenPixel.width) let hgt:float = Float(CAIMScreenPixel.height) for _ in 0..< 100 { var p:particle = Particle() p.pos = Vec2(CAIMRandom(wid), CAIMRandom(hgt)) p.rgba = CAIMColor(R: CAIMRandom(), G: CAIMRandom(), B: CAIMRandom(), A: CAIMRandom()) p.radius = CAIMRandom(100.0) p.life = CAIMRandom() circle_parts.append(p) override func setup() { // (GPU)() () mat_buf = CAIMMetalBuffer(Matrix4x4.pixelProjection(CAIMScreenPixel)) // setupcircles()

6 () // private func updatecircles() { // let wid:float = Float(CAIMScreenPixel.width) let hgt:float = Float(CAIMScreenPixel.height) for i:int in 0..< circle_parts.count { // (3) () circle_parts[i].life -= 1.0 / (3.0 * 60.0) // 0 if(circle_parts[i].life <= 0.0) { circle_parts[i].pos = Vec2(CAIMRandom(wid), CAIMRandom(hgt)) circle_parts[i].rgba = CAIMColor(R: CAIMRandom(), G: CAIMRandom(), B: CAIMRandom(), A: CAIMRandom()) circle_parts[i].radius = CAIMRandom(100.0) circle_parts[i].life = 1.0

7 () // CPUGPU private func gencirclesbuffer() { // CPU(circle_parts -> circle_quads) circle_quads.resize(count: circle_parts.count) let p_circle_quads = circle_quads.pointer for i:int in 0..< circle_quads.count { // let p:particle = circle_parts[i] let x:float = p.pos.x let y:float = p.pos.y // x // y let r:float = p.radius * (1.0 - p.life) // () var rgba:caimcolor = p.rgba rgba.a *= p.life // // () // v0 p_circle_quads[i].v0.pos = Vec4(x-r, y-r, 0, 1) p_circle_quads[i].v0.uv = Vec2(-1.0, -1.0) p_circle_quads[i].v0.rgba = rgba // v1 p_circle_quads[i].v1.pos = Vec4(x+r, y-r, 0, 1) p_circle_quads[i].v1.uv = Vec2(1.0, -1.0) p_circle_quads[i].v1.rgba = rgba // v2 p_circle_quads[i].v2.pos = Vec4(x-r, y+r, 0, 1) p_circle_quads[i].v2.uv = Vec2(-1.0, 1.0) p_circle_quads[i].v2.rgba = rgba // v3 p_circle_quads[i].v3.pos = Vec4(x+r, y+r, 0, 1) p_circle_quads[i].v3.uv = Vec2(1.0, 1.0) p_circle_quads[i].v3.rgba = rgba // GPU(circle_quads -> circle_quads_buf) circle_quads_buf?.update(vertice: circle_quads) ()

8 () // private func drawcircles(renderer:caimmetalrenderer) { // () renderer.use(pl_circle) // renderer.link(circle_quads_buf!, to:.vertex, at:id_vertex) renderer.link(mat_buf!, to:.vertex, at:id_projection) // GPU(circle_quads) renderer.draw(circle_quads) // override func update(renderer:caimmetalrenderer) { // updatecircles() // GPU gencirclesbuffer() // drawcircles(renderer: renderer)

9 () // ID constant int ID_VERTEX = 0; constant int ID_PROJECTION = 1; // struct VertexIn { packed_float4 pos; packed_float2 uv; packed_float4 rgba; ; // struct VertexOut { float4 pos [[position]]; float2 uv; float4 rgba; ; // (2D) vertex VertexOut vert2d(device VertexIn *vin [[ buffer(id_vertex) ]], constant float4x4 &proj_matrix [[ buffer(id_projection) ]], uint vid [[vertex_id]]) { VertexOut vout; vout.pos = proj_matrix * float4(vin[vid].pos); vout.uv = vin[vid].uv; vout.rgba = vin[vid].rgba; return vout; // (Cos) fragment float4 fragcirclecoscurve(vertexout vout [[ stage_in ]]) { // uv float dist2 = vout.uv[0] * vout.uv[0] + vout.uv[1] * vout.uv[1]; // uv1.0 = (discard_fragment()) if(dist2 >= 1.0) { discard_fragment(); // float4 rgba = vout.rgba; rgba[3] = vout.rgba[3] * (1.0 + cos(m_pi_f * dist2)) / 2.0; return rgba;

12 import UIKit () // CAIM-Metal class DrawingViewController : CAIMMetalViewController { private var pl_circle:caimmetalrenderpipeline? // private var pl_ring:caimmetalrenderpipeline? // // GPU: private var mat_buf:caimmetalbuffer? private var circle_quads_buf:caimmetalbuffer? private var ring_quads_buf:caimmetalbuffer? // // () // () // CPU: private var circle_quads = CAIMQuadrangles<VertexInfo>() private var ring_quads = CAIMQuadrangles<VertexInfo>() // // // private var circle_parts = [Particle]() // private var ring_parts = [Particle]() // ()

13 () private func setupcircles() { // private func setuprings() { // pl_ring = CAIMMetalRenderPipeline(vertname:"vert2d", fragname:"fragring") pl_ring?.blend_type =.alpha_blend // (GPU)() ring_quads_buf = CAIMMetalBuffer(vertice:ring_quads) // let wid:float = Float(CAIMScreenPixel.width) let hgt:float = Float(CAIMScreenPixel.height) for _ in 0..< 100 { var p:particle = Particle() p.pos = Vec2(CAIMRandom(wid), CAIMRandom(hgt)) p.rgba = CAIMColor(R: CAIMRandom(), G: CAIMRandom(), B: CAIMRandom(), A: CAIMRandom()) p.radius = CAIMRandom(100.0) p.life = CAIMRandom() ring_parts.append(p) override func setup() { // (GPU)() mat_buf = CAIMMetalBuffer(Matrix4x4.pixelProjection(CAIMScreenPixel)) // setupcircles() // setuprings() ()

14 () // private func updaterings() { // let wid:float = Float(CAIMScreenPixel.width) let hgt:float = Float(CAIMScreenPixel.height) // for i:int in 0..< ring_parts.count { // (3) () ring_parts[i].life -= 1.0 / (3.0 * 60.0) // 0 if(ring_parts[i].life <= 0.0) { ring_parts[i].pos = Vec2(CAIMRandom(wid), CAIMRandom(hgt)) ring_parts[i].rgba = CAIMColor(R: CAIMRandom(), G: CAIMRandom(), B: CAIMRandom(), A: CAIMRandom()) ring_parts[i].radius = CAIMRandom(100.0) ring_parts[i].life = 1.0

15 () // CPUGPU private func genringsbuffer() { // CPU(parts -> quads) ring_quads.resize(count: ring_parts.count) let p_ring_quads = ring_quads.pointer for i:int in 0..< ring_quads.count { // let p:particle = ring_parts[i] let x:float = p.pos.x let y:float = p.pos.y // x // y let r:float = p.radius * (1.0 - p.life) // () var rgba:caimcolor = p.rgba rgba.a *= p.life // // () // v0 p_ring_quads[i].v0.pos = Vec4(x-r, y-r, 0, 1) p_ring_quads[i].v0.uv = Vec2(-1.0, -1.0) p_ring_quads[i].v0.rgba = rgba // v1 p_ring_quads[i].v1.pos = Vec4(x+r, y-r, 0, 1) p_ring_quads[i].v1.uv = Vec2(1.0, -1.0) p_ring_quads[i].v1.rgba = rgba // v2 p_ring_quads[i].v2.pos = Vec4(x-r, y+r, 0, 1) p_ring_quads[i].v2.uv = Vec2(-1.0, 1.0) p_ring_quads[i].v2.rgba = rgba // v3 p_ring_quads[i].v3.pos = Vec4(x+r, y+r, 0, 1) p_ring_quads[i].v3.uv = Vec2(1.0, 1.0) p_ring_quads[i].v3.rgba = rgba // GPU(quads -> quads_buf) ring_quads_buf?.update(vertice: ring_quads) ()

16 () // private func drawrings(renderer:caimmetalrenderer) { // () renderer.use(pl_ring) // renderer.link(ring_quads_buf!, to:.vertex, at:id_vertex) renderer.link(mat_buf!, to:.vertex, at:id_projection) // GPU(ring_quads) renderer.draw(ring_quads) // override func update(renderer:caimmetalrenderer) { // updatecircles() // GPU gencirclesbuffer() // drawcircles(renderer: renderer) // updaterings() // GPU genringsbuffer() // drawrings(renderer: renderer)

17 () // (2D) vertex VertexOut vert2d(device VertexIn *vin [[ buffer(id_vertex) ]], constant float4x4 &proj_matrix [[ buffer(id_projection) ]], uint vid [[vertex_id]]) { () // (Cos) fragment float4 fragcirclecoscurve(vertexout vout [[ stage_in ]]) { () // () fragment float4 fragring(vertexout vout [[ stage_in ]]) { // uv float dist2 = vout.uv[0] * vout.uv[0] + vout.uv[1] * vout.uv[1]; // uv float dist = sqrt(dist2); // uv0.81.0() if(dist <= <= dist) { discard_fragment(); // dist2=0.9k10k=0.0~1.0 // kcos float k = fabs(0.9 - dist) * 10.0; // float4 rgba = vout.rgba; rgba[3] = vout.rgba[3] * (1.0 + cos(m_pi_f * k)) / 2.0; return rgba;

caimmetal03.key

caimmetal03.key import UIKit import simd // ID let ID_VERTEX:Int = 0 let ID_PROJECTION:Int = 1 // 1 struct Vertex { var pos:float2 = Float2() var uv:float2 = Float2() var rgba:float4 = Float4() // struct Particle { var