mirror of
https://github.com/Jozufozu/Flywheel.git
synced 2024-11-14 06:24:12 +01:00
Spherical instances in a vacuum
- Write out instance bounding spheres in pass one - Read them back in pass two so we don't have to read in the entire instance twice - Cull pass 2 no longer needs to be parameterized by instance type, so less program binds are needed - Fix page indexing logic - Fix visibility sizing logic
This commit is contained in:
Jozufozu
parent
1823a9fa24
commit
a6c5f93fb4
@ -23,6 +23,7 @@ import dev.engine_room.flywheel.backend.glsl.SourceComponent;
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import dev.engine_room.flywheel.backend.util.AtomicReferenceCounted;
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import dev.engine_room.flywheel.lib.util.ResourceUtil;
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import net.minecraft.resources.ResourceLocation;
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import net.minecraft.util.Unit;
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public class IndirectPrograms extends AtomicReferenceCounted {
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private static final ResourceLocation CULL_SHADER_API_IMPL = Flywheel.rl("internal/indirect/cull_api_impl.glsl");
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@ -37,6 +38,7 @@ public class IndirectPrograms extends AtomicReferenceCounted {
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private static final Compile<InstanceType<?>> CULL = new Compile<>();
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private static final Compile<ResourceLocation> UTIL = new Compile<>();
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private static final Compile<Unit> UNIT = new Compile<>();
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private static final List<String> EXTENSIONS = getExtensions(GlCompat.MAX_GLSL_VERSION);
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private static final List<String> COMPUTE_EXTENSIONS = getComputeExtensions(GlCompat.MAX_GLSL_VERSION);
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@ -46,10 +48,10 @@ public class IndirectPrograms extends AtomicReferenceCounted {
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private final PipelineCompiler pipeline;
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private final CompilationHarness<InstanceType<?>> culling;
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private final CompilationHarness<InstanceType<?>> cullPassTwo;
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private final CompilationHarness<Unit> cullPassTwo;
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private final CompilationHarness<ResourceLocation> utils;
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private IndirectPrograms(PipelineCompiler pipeline, CompilationHarness<InstanceType<?>> culling, CompilationHarness<InstanceType<?>> cullPassTwo, CompilationHarness<ResourceLocation> utils) {
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private IndirectPrograms(PipelineCompiler pipeline, CompilationHarness<InstanceType<?>> culling, CompilationHarness<Unit> cullPassTwo, CompilationHarness<ResourceLocation> utils) {
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this.pipeline = pipeline;
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this.culling = culling;
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this.cullPassTwo = cullPassTwo;
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@ -91,7 +93,7 @@ public class IndirectPrograms extends AtomicReferenceCounted {
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var pipelineCompiler = PipelineCompiler.create(sources, Pipelines.INDIRECT, vertexComponents, fragmentComponents, EXTENSIONS);
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var pass1Compiler = createCullingCompiler(sources, CULL_SHADER_MAIN, "early_cull");
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var pass2Compiler = createCullingCompiler(sources, PASS2_SHADER_MAIN, "late_cull");
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var pass2Compiler = createPassTwoCompiler(sources, PASS2_SHADER_MAIN, "late_cull");
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var utilCompiler = createUtilCompiler(sources);
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IndirectPrograms newInstance = new IndirectPrograms(pipelineCompiler, pass1Compiler, pass2Compiler, utilCompiler);
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@ -119,6 +121,19 @@ public class IndirectPrograms extends AtomicReferenceCounted {
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.harness(name, sources);
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}
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private static CompilationHarness<Unit> createPassTwoCompiler(ShaderSources sources, ResourceLocation main, String name) {
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return UNIT.program()
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.link(UNIT.shader(GlCompat.MAX_GLSL_VERSION, ShaderType.COMPUTE)
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.nameMapper(instanceType -> name)
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.requireExtensions(COMPUTE_EXTENSIONS)
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.define("_FLW_SUBGROUP_SIZE", GlCompat.SUBGROUP_SIZE)
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.enableExtension("GL_KHR_shader_subgroup_basic")
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.enableExtension("GL_KHR_shader_subgroup_ballot")
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.withResource(main))
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.postLink((key, program) -> Uniforms.setUniformBlockBindings(program))
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.harness(name, sources);
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}
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/**
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* A compiler for utility shaders, directly compiles the shader at the resource location specified by the parameter.
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*/
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@ -163,8 +178,8 @@ public class IndirectPrograms extends AtomicReferenceCounted {
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return culling.get(instanceType);
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}
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public GlProgram getCullPassTwoProgram(InstanceType<?> instanceType) {
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return cullPassTwo.get(instanceType);
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public GlProgram getCullPassTwoProgram() {
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return cullPassTwo.get(Unit.INSTANCE);
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}
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public GlProgram getApplyProgram() {
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@ -1,16 +1,17 @@
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package dev.engine_room.flywheel.backend.engine.indirect;
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public final class BufferBindings {
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public static final int LAST_FRAME_VISIBILITY = 0;
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public static final int PAGE_FRAME_DESCRIPTOR = 1;
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public static final int INSTANCE = 2;
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public static final int DRAW_INSTANCE_INDEX = 3;
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public static final int MODEL = 4;
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public static final int DRAW = 5;
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public static final int BOUNDING_SPHERES = 0;
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public static final int LAST_FRAME_VISIBILITY = 1;
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public static final int PAGE_FRAME_DESCRIPTOR = 2;
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public static final int INSTANCE = 3;
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public static final int DRAW_INSTANCE_INDEX = 4;
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public static final int MODEL = 5;
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public static final int DRAW = 6;
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public static final int LIGHT_LUT = 6;
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public static final int LIGHT_SECTION = 7;
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public static final int MATRICES = 8;
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public static final int LIGHT_LUT = 7;
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public static final int LIGHT_SECTION = 8;
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public static final int MATRICES = 9;
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private BufferBindings() {
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}
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@ -7,12 +7,11 @@ import org.lwjgl.system.MemoryUtil;
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import org.lwjgl.system.Pointer;
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import dev.engine_room.flywheel.backend.gl.buffer.GlBufferType;
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import dev.engine_room.flywheel.lib.math.MoreMath;
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import dev.engine_room.flywheel.lib.memory.MemoryBlock;
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public class IndirectBuffers {
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// Number of vbos created.
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public static final int BUFFER_COUNT = 6;
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public static final int BUFFER_COUNT = 7;
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public static final long INT_SIZE = Integer.BYTES;
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public static final long PTR_SIZE = Pointer.POINTER_SIZE;
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@ -31,6 +30,7 @@ public class IndirectBuffers {
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private static final long BUFFERS_SIZE_BYTES = SIZE_OFFSET + BUFFER_COUNT * PTR_SIZE;
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// Offsets to the vbos
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private static final long BOUNDING_SPHERES_HANDLE_OFFSET = HANDLE_OFFSET + BufferBindings.BOUNDING_SPHERES * INT_SIZE;
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private static final long LAST_FRAME_VISIBILITY_HANDLE_OFFSET = HANDLE_OFFSET + BufferBindings.LAST_FRAME_VISIBILITY * INT_SIZE;
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private static final long PAGE_FRAME_DESCRIPTOR_HANDLE_OFFSET = HANDLE_OFFSET + BufferBindings.PAGE_FRAME_DESCRIPTOR * INT_SIZE;
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private static final long INSTANCE_HANDLE_OFFSET = HANDLE_OFFSET + BufferBindings.INSTANCE * INT_SIZE;
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@ -39,6 +39,7 @@ public class IndirectBuffers {
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private static final long DRAW_HANDLE_OFFSET = HANDLE_OFFSET + BufferBindings.DRAW * INT_SIZE;
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// Offsets to the sizes
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private static final long BOUNDING_SPHERES_SIZE_OFFSET = SIZE_OFFSET + BufferBindings.BOUNDING_SPHERES * PTR_SIZE;
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private static final long LAST_FRAME_VISIBILITY_SIZE_OFFSET = SIZE_OFFSET + BufferBindings.LAST_FRAME_VISIBILITY * PTR_SIZE;
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private static final long PAGE_FRAME_DESCRIPTOR_SIZE_OFFSET = SIZE_OFFSET + BufferBindings.PAGE_FRAME_DESCRIPTOR * PTR_SIZE;
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private static final long INSTANCE_SIZE_OFFSET = SIZE_OFFSET + BufferBindings.INSTANCE * PTR_SIZE;
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@ -65,6 +66,7 @@ public class IndirectBuffers {
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*/
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private final MemoryBlock multiBindBlock;
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public final ResizableStorageArray boundingSpheres;
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public final ResizableStorageArray lastFrameVisibility;
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public final ObjectStorage objectStorage;
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public final ResizableStorageArray drawInstanceIndex;
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@ -74,6 +76,7 @@ public class IndirectBuffers {
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IndirectBuffers(long instanceStride) {
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this.multiBindBlock = MemoryBlock.calloc(BUFFERS_SIZE_BYTES, 1);
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boundingSpheres = new ResizableStorageArray(16);
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lastFrameVisibility = new ResizableStorageArray(INT_SIZE, INSTANCE_GROWTH_FACTOR);
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objectStorage = new ObjectStorage(instanceStride);
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drawInstanceIndex = new ResizableStorageArray(INT_SIZE, INSTANCE_GROWTH_FACTOR);
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@ -83,12 +86,14 @@ public class IndirectBuffers {
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void updateCounts(int instanceCount, int modelCount, int drawCount) {
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drawInstanceIndex.ensureCapacity(instanceCount);
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lastFrameVisibility.ensureCapacity(MoreMath.ceilingDiv(instanceCount, 32));
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lastFrameVisibility.ensureCapacity(objectStorage.capacity());
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boundingSpheres.ensureCapacity(objectStorage.capacity() * 32L);
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model.ensureCapacity(modelCount);
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draw.ensureCapacity(drawCount);
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final long ptr = multiBindBlock.ptr();
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MemoryUtil.memPutInt(ptr + BOUNDING_SPHERES_HANDLE_OFFSET, boundingSpheres.handle());
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MemoryUtil.memPutInt(ptr + LAST_FRAME_VISIBILITY_HANDLE_OFFSET, lastFrameVisibility.handle());
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MemoryUtil.memPutInt(ptr + PAGE_FRAME_DESCRIPTOR_HANDLE_OFFSET, objectStorage.frameDescriptorBuffer.handle());
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MemoryUtil.memPutInt(ptr + INSTANCE_HANDLE_OFFSET, objectStorage.objectBuffer.handle());
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@ -96,7 +101,8 @@ public class IndirectBuffers {
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MemoryUtil.memPutInt(ptr + MODEL_HANDLE_OFFSET, model.handle());
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MemoryUtil.memPutInt(ptr + DRAW_HANDLE_OFFSET, draw.handle());
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MemoryUtil.memPutAddress(ptr + LAST_FRAME_VISIBILITY_SIZE_OFFSET, INT_SIZE * MoreMath.ceilingDiv(instanceCount, 32));
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MemoryUtil.memPutAddress(ptr + BOUNDING_SPHERES_SIZE_OFFSET, 16L * objectStorage.capacity() * 32);
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MemoryUtil.memPutAddress(ptr + LAST_FRAME_VISIBILITY_SIZE_OFFSET, INT_SIZE * objectStorage.capacity());
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MemoryUtil.memPutAddress(ptr + PAGE_FRAME_DESCRIPTOR_SIZE_OFFSET, objectStorage.frameDescriptorBuffer.capacity());
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MemoryUtil.memPutAddress(ptr + INSTANCE_SIZE_OFFSET, objectStorage.objectBuffer.capacity());
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MemoryUtil.memPutAddress(ptr + DRAW_INSTANCE_INDEX_SIZE_OFFSET, INT_SIZE * instanceCount);
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@ -105,23 +111,23 @@ public class IndirectBuffers {
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}
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public void bindForCullPassOne() {
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multiBind(0, 5);
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multiBind(0, 6);
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}
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public void bindForCullPassTwo() {
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multiBind(0, 5);
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multiBind(0, 6);
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}
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public void bindForApply() {
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multiBind(4, 2);
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multiBind(5, 2);
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}
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public void bindForModelReset() {
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multiBind(4, 1);
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multiBind(5, 1);
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}
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public void bindForDraw() {
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multiBind(2, 4);
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multiBind(3, 4);
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GlBufferType.DRAW_INDIRECT_BUFFER.bind(draw.handle());
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}
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@ -129,7 +135,7 @@ public class IndirectBuffers {
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* Bind all buffers except the draw command buffer.
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*/
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public void bindForCrumbling() {
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multiBind(3, 3);
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multiBind(4, 3);
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}
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private void multiBind(int base, int count) {
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@ -23,7 +23,6 @@ import dev.engine_room.flywheel.backend.compile.IndirectPrograms;
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import dev.engine_room.flywheel.backend.engine.InstancerKey;
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import dev.engine_room.flywheel.backend.engine.MaterialRenderState;
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import dev.engine_room.flywheel.backend.engine.MeshPool;
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import dev.engine_room.flywheel.backend.engine.uniform.Uniforms;
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import dev.engine_room.flywheel.backend.gl.GlCompat;
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import dev.engine_room.flywheel.backend.gl.shader.GlProgram;
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import dev.engine_room.flywheel.lib.math.MoreMath;
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@ -44,7 +43,6 @@ public class IndirectCullingGroup<I extends Instance> {
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private final IndirectPrograms programs;
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private final GlProgram earlyCull;
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private final GlProgram lateCull;
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private boolean needsDrawBarrier;
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private boolean needsDrawSort;
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@ -58,7 +56,6 @@ public class IndirectCullingGroup<I extends Instance> {
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this.programs = programs;
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earlyCull = programs.getCullingProgram(instanceType);
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lateCull = programs.getCullPassTwoProgram(instanceType);
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}
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public void flushInstancers() {
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@ -113,7 +110,6 @@ public class IndirectCullingGroup<I extends Instance> {
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return;
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}
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Uniforms.bindAll();
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earlyCull.bind();
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buffers.bindForCullPassOne();
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@ -125,9 +121,6 @@ public class IndirectCullingGroup<I extends Instance> {
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return;
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}
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Uniforms.bindAll();
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lateCull.bind();
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buffers.bindForCullPassTwo();
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glDispatchCompute(buffers.objectStorage.capacity(), 1, 1);
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}
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@ -132,6 +132,9 @@ public class IndirectDrawManager extends DrawManager<IndirectInstancer<?>> {
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GlTextureUnit.T0.makeActive();
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GlStateManager._bindTexture(depthPyramid.pyramidTextureId);
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programs.getCullPassTwoProgram()
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.bind();
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for (var group1 : cullingGroups.values()) {
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group1.dispatchCullPassTwo();
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}
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@ -2,16 +2,17 @@
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// A few of these could be combined.
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// Per culling group
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#define _FLW_LAST_FRAME_VISIBILITY_BUFFER_BINDING 0// cull1, cull2
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#define _FLW_PAGE_FRAME_DESCRIPTOR_BUFFER_BINDING 1// cull1, cull2
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#define _FLW_INSTANCE_BUFFER_BINDING 2// cull1, cull2, draw
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#define _FLW_DRAW_INSTANCE_INDEX_BUFFER_BINDING 3// cull1, cull2, draw
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#define _FLW_MODEL_BUFFER_BINDING 4// cull1, cull2, apply
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#define _FLW_DRAW_BUFFER_BINDING 5// apply, draw
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#define _FLW_BOUNDING_SPHERE_BINDING 0// cull1, cull2
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#define _FLW_LAST_FRAME_VISIBILITY_BUFFER_BINDING 1// cull1, cull2
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#define _FLW_PAGE_FRAME_DESCRIPTOR_BUFFER_BINDING 2// cull1, cull2
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#define _FLW_INSTANCE_BUFFER_BINDING 3// cull1, cull2, draw
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#define _FLW_DRAW_INSTANCE_INDEX_BUFFER_BINDING 4// cull1, cull2, draw
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#define _FLW_MODEL_BUFFER_BINDING 5// cull1, cull2, apply
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#define _FLW_DRAW_BUFFER_BINDING 6// apply, draw
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// Global to the engine
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#define _FLW_LIGHT_LUT_BUFFER_BINDING 6
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#define _FLW_LIGHT_SECTIONS_BUFFER_BINDING 7
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#define _FLW_LIGHT_LUT_BUFFER_BINDING 7
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#define _FLW_LIGHT_SECTIONS_BUFFER_BINDING 8
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#define _FLW_MATRIX_BUFFER_BINDING 8
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#define _FLW_MATRIX_BUFFER_BINDING 9
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@ -7,15 +7,14 @@
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layout(local_size_x = 32) in;
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layout(std430, binding = _FLW_BOUNDING_SPHERE_BINDING) restrict writeonly buffer BoundingSphereBuffer {
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vec4 _flw_boundingSpheres[];
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};
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layout(std430, binding = _FLW_DRAW_INSTANCE_INDEX_BUFFER_BINDING) restrict writeonly buffer DrawIndexBuffer {
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uint _flw_drawIndices[];
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};
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// High 6 bits for the number of instances in the page.
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const uint _FLW_PAGE_COUNT_OFFSET = 26u;
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// Bottom 26 bits for the model index.
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const uint _FLW_MODEL_INDEX_MASK = 0x3FFFFFF;
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layout(std430, binding = _FLW_PAGE_FRAME_DESCRIPTOR_BUFFER_BINDING) restrict readonly buffer PageFrameDescriptorBuffer {
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uint _flw_pageFrameDescriptors[];
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};
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@ -61,39 +60,36 @@ bool _flw_isVisible(uint instanceIndex, uint modelIndex) {
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transformBoundingSphere(_flw_matrices[matrixIndex].pose, center, radius);
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}
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_flw_boundingSpheres[instanceIndex] = vec4(center, radius);
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return _flw_testSphere(center, radius);
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}
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// TODO: There's an opportunity here to write out the transformed bounding spheres to a buffer and use them in pass 2,
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// instead of pulling the entire instance again. It would save a lot of memory bandwidth and matrix multiplications in
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// pass 2, but it would also be a good bit of writes in pass 1. It's worth investigating, but it would be nice to have
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// nsight trace working to be more sure.
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void main() {
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uint pageIndex = gl_WorkGroupID.x;
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uint pageIndex = gl_WorkGroupID.x << 1u;
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if (pageIndex >= _flw_pageFrameDescriptors.length()) {
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return;
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}
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uint packedModelIndexAndCount = _flw_pageFrameDescriptors[pageIndex];
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uint modelIndex = _flw_pageFrameDescriptors[pageIndex];
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uint pageInstanceCount = packedModelIndexAndCount >> _FLW_PAGE_COUNT_OFFSET;
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uint pageValidity = _flw_pageFrameDescriptors[pageIndex + 1];
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if (gl_LocalInvocationID.x >= pageInstanceCount) {
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if (((1u << gl_LocalInvocationID.x) & pageValidity) == 0) {
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return;
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}
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uint instanceIndex = gl_GlobalInvocationID.x;
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uint modelIndex = packedModelIndexAndCount & _FLW_MODEL_INDEX_MASK;
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if (!_flw_isVisible(instanceIndex, modelIndex)) {
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return;
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}
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uint pageVisibility = _flw_visibility[pageIndex];
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uint pageVisibility = _flw_visibility[gl_WorkGroupID.x];
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bool visibleLastFrame = (_flw_visibility[gl_WorkGroupID.x] & (1u << gl_LocalInvocationID.x)) != 0u;
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if ((pageVisibility & (1u << gl_LocalInvocationID.x)) != 0u) {
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if (visibleLastFrame) {
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// This instance was visibile last frame, it should be rendered early.
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uint localIndex = atomicAdd(_flw_models[modelIndex].instanceCount, 1);
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uint targetIndex = _flw_models[modelIndex].baseInstance + localIndex;
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@ -2,7 +2,6 @@
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#include "flywheel:internal/indirect/model_descriptor.glsl"
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#include "flywheel:internal/uniforms/uniforms.glsl"
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#include "flywheel:util/matrix.glsl"
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#include "flywheel:internal/indirect/matrices.glsl"
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#include "flywheel:internal/indirect/dispatch.glsl"
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layout(local_size_x = 32) in;
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@ -11,12 +10,9 @@ layout(std430, binding = _FLW_DRAW_INSTANCE_INDEX_BUFFER_BINDING) restrict write
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uint _flw_drawIndices[];
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};
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// High 6 bits for the number of instances in the page.
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const uint _FLW_PAGE_COUNT_OFFSET = 26u;
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// Bottom 26 bits for the model index.
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const uint _FLW_MODEL_INDEX_MASK = 0x3FFFFFF;
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layout(std430, binding = _FLW_BOUNDING_SPHERE_BINDING) restrict readonly buffer BoundingSphereBuffer {
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vec4 _flw_boundingSpheres[];
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};
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layout(std430, binding = _FLW_PAGE_FRAME_DESCRIPTOR_BUFFER_BINDING) restrict readonly buffer PageFrameDescriptorBuffer {
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uint _flw_pageFrameDescriptors[];
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@ -30,10 +26,6 @@ layout(std430, binding = _FLW_MODEL_BUFFER_BINDING) restrict buffer ModelBuffer
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ModelDescriptor _flw_models[];
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};
|
||||
|
||||
layout(std430, binding = _FLW_MATRIX_BUFFER_BINDING) restrict readonly buffer MatrixBuffer {
|
||||
Matrices _flw_matrices[];
|
||||
};
|
||||
|
||||
layout(binding = 0) uniform sampler2D _flw_depthPyramid;
|
||||
|
||||
bool projectSphere(vec3 c, float r, float znear, float P00, float P11, out vec4 aabb) {
|
||||
@ -113,21 +105,11 @@ bool _flw_hizTest(vec3 center, float radius) {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool _flw_isVisible(uint instanceIndex, uint modelIndex) {
|
||||
uint matrixIndex = _flw_models[modelIndex].matrixIndex;
|
||||
BoundingSphere sphere = _flw_models[modelIndex].boundingSphere;
|
||||
bool _flw_isVisible(uint instanceIndex) {
|
||||
vec4 boundingSphere = _flw_boundingSpheres[instanceIndex];
|
||||
|
||||
vec3 center;
|
||||
float radius;
|
||||
_flw_unpackBoundingSphere(sphere, center, radius);
|
||||
|
||||
FlwInstance instance = _flw_unpackInstance(instanceIndex);
|
||||
|
||||
flw_transformBoundingSphere(instance, center, radius);
|
||||
|
||||
if (matrixIndex > 0) {
|
||||
transformBoundingSphere(_flw_matrices[matrixIndex].pose, center, radius);
|
||||
}
|
||||
vec3 center = boundingSphere.xyz;
|
||||
float radius = boundingSphere.w;
|
||||
|
||||
bool visible = _flw_testSphere(center, radius);
|
||||
|
||||
@ -155,8 +137,8 @@ void main() {
|
||||
|
||||
uint instanceIndex = gl_GlobalInvocationID.x;
|
||||
|
||||
bool visible = _flw_isVisible(instanceIndex, modelIndex);
|
||||
bool visibleLastFrame = (_flw_visibility[pageIndex] & (1u << gl_LocalInvocationID.x)) != 0u;
|
||||
bool visible = _flw_isVisible(instanceIndex);
|
||||
bool visibleLastFrame = (_flw_visibility[gl_WorkGroupID.x] & (1u << gl_LocalInvocationID.x)) != 0u;
|
||||
|
||||
if (visible && !visibleLastFrame) {
|
||||
uint localIndex = atomicAdd(_flw_models[modelIndex].instanceCount, 1);
|
||||
@ -168,6 +150,6 @@ void main() {
|
||||
uvec4 visibility = subgroupBallot(visible);
|
||||
|
||||
if (subgroupElect()) {
|
||||
_flw_visibility[pageIndex] = visibility.x;
|
||||
_flw_visibility[gl_WorkGroupID.x] = visibility.x;
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user