145 lines
4.4 KiB
Haxe
145 lines
4.4 KiB
Haxe
package armory.renderpath;
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#if kha_dxr
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import kha.graphics5.CommandList;
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import kha.graphics5.ConstantBuffer;
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import kha.graphics5.RayTraceTarget;
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import kha.graphics5.RayTracePipeline;
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import kha.graphics5.AccelerationStructure;
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import kha.graphics5.VertexBuffer;
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import kha.graphics5.IndexBuffer;
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import kha.graphics5.VertexStructure;
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import kha.graphics5.VertexData;
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import kha.graphics5.Usage;
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import kha.graphics5.TextureFormat;
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import iron.RenderPath;
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class RenderPathRaytracer {
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#if (rp_renderer == "Raytracer")
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static var path:RenderPath;
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static var ready = false;
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static inline var bufferCount = 2;
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static var currentBuffer = -1;
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static var commandList: CommandList;
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static var framebuffers = new haxe.ds.Vector<kha.graphics5.RenderTarget>(bufferCount);
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static var constantBuffer: ConstantBuffer;
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static var target: RayTraceTarget;
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static var pipeline: RayTracePipeline;
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static var accel: AccelerationStructure;
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static var frame = 0.0;
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@:access(iron.data.Geometry)
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public static function init(_path:RenderPath) {
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path = _path;
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kha.Assets.loadBlobFromPath("pt_raygeneration.o", function(rayShader:kha.Blob) {
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kha.Assets.loadBlobFromPath("pt_closesthit.o", function(hitShader:kha.Blob) {
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kha.Assets.loadBlobFromPath("pt_miss.o", function(missShader:kha.Blob) {
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iron.system.Tween.timer(0.2, function() {
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ready = true;
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// Command list
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commandList = new CommandList();
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for (i in 0...bufferCount) {
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framebuffers[i] = new kha.graphics5.RenderTarget(iron.App.w(), iron.App.h(), 16, false, TextureFormat.RGBA32,
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-1, -i - 1 /* hack in an index for backbuffer render targets */);
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}
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commandList.end(); // TODO: Otherwise "Reset fails because the command list was not closed"
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// Pipeline
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constantBuffer = new ConstantBuffer(21 * 4);
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pipeline = new RayTracePipeline(commandList, rayShader, hitShader, missShader, constantBuffer);
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// Acceleration structure
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var structure = new VertexStructure();
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structure.add("pos", VertexData.Float3);
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structure.add("nor", VertexData.Float3);
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var geom = iron.Scene.active.meshes[0].data.geom;
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var vb = new VertexBuffer(Std.int(geom.positions.length / 3), structure, kha.graphics5.Usage.StaticUsage);
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var vba = vb.lock();
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iron.data.Geometry.buildVertices(vba, geom.positions, geom.normals);
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vb.unlock();
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var id = geom.indices[0];
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var ib = new IndexBuffer(id.length, kha.graphics5.Usage.StaticUsage);
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var iba = ib.lock();
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for (i in 0...iba.length) iba[i] = id[i];
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ib.unlock();
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accel = new AccelerationStructure(commandList, vb, ib);
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// Output
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target = new RayTraceTarget(iron.App.w(), iron.App.h());
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});
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});
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});
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});
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}
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public static function commands() {
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if (!ready) return;
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var g = iron.App.framebuffer.g5;
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currentBuffer = (currentBuffer + 1) % bufferCount;
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constantBuffer.lock();
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var cam = iron.Scene.active.camera;
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var ct = cam.transform;
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var helpMat = iron.math.Mat4.identity();
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helpMat.setFrom(cam.V);
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helpMat.multmat(cam.P);
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helpMat.getInverse(helpMat);
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constantBuffer.setFloat(0, ct.worldx());
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constantBuffer.setFloat(4, ct.worldy());
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constantBuffer.setFloat(8, ct.worldz());
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constantBuffer.setFloat(12, 1);
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constantBuffer.setFloat(16, helpMat._00);
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constantBuffer.setFloat(20, helpMat._01);
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constantBuffer.setFloat(24, helpMat._02);
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constantBuffer.setFloat(28, helpMat._03);
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constantBuffer.setFloat(32, helpMat._10);
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constantBuffer.setFloat(36, helpMat._11);
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constantBuffer.setFloat(40, helpMat._12);
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constantBuffer.setFloat(44, helpMat._13);
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constantBuffer.setFloat(48, helpMat._20);
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constantBuffer.setFloat(52, helpMat._21);
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constantBuffer.setFloat(56, helpMat._22);
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constantBuffer.setFloat(60, helpMat._23);
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constantBuffer.setFloat(64, helpMat._30);
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constantBuffer.setFloat(68, helpMat._31);
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constantBuffer.setFloat(72, helpMat._32);
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constantBuffer.setFloat(76, helpMat._33);
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constantBuffer.setFloat(80, frame);
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frame += 1.0;
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constantBuffer.unlock();
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g.begin(framebuffers[currentBuffer]);
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commandList.begin();
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g.setAccelerationStructure(accel);
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g.setRayTracePipeline(pipeline);
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g.setRayTraceTarget(target);
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g.dispatchRays(commandList);
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g.copyRayTraceTarget(commandList, framebuffers[currentBuffer], target);
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commandList.end();
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g.end();
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g.swapBuffers();
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}
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#end
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}
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#end
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