UUSL计算着色器

章节:

UUSL supports compute shaders: there are special functions, semantics and parameters for compute shaders. UUSL支持计算着色器：计算着色器具有特殊的功能，语义和参数。

In Unigine, compute shaders have a *.comp extension.在Unigine中，计算着色器的扩展名为*.comp。

A compute shader is a special part of the graphics pipeline. It allows to execute code on the GPU, read and write buffer data.计算着色器是图形管道的特殊部分。它允许在GPU上执行代码，读取和写入缓冲区数据。

背景知识

本文假定您具有计算着色器的先验知识。另外，在继续之前，请阅读有关UUSL的以下主题：

Main Function主功能#

To start and end the void Main function of the compute shader, use the following instructions:要开始和结束计算着色器的void Main函数，请使用以下指令：

UUSL

#include <core/materials/shaders/render/common.h>

MAIN_COMPUTE_BEGIN(WIDTH_GROUP,HEIGHT_GROUP)
	<your code here>
MAIN_COMPUTE_END

警告

您应在关闭指令后添加新行（按Enter）。

This code is equivalent to:此代码等效于：

OpenGL

#include <core/materials/shaders/render/common.h>

layout (local_size_x = WIDTH_GROUP, local_size_y = HEIGHT_GROUP) in;
void main() {
	<your code here>
}

Direct3D

#include <core/materials/shaders/render/common.h>

[numthreads(WIDTH_GROUP, HEIGHT_GROUP, 1)]
void main(DISPATCH_INFO dispatch_info) {
	<your code here>
}

Semantics语义学#

UUSL	OpenGL	Direct3D	Description
GROUP_ID SHARED GROUP_ID	gl_WorkGroupID shared gl_WorkGroupID	SV_GroupID groupshared SV_GroupID	Contains the index of the workgroup currently being operated on by a compute shaderMark a variable for thread-group-shared memory for compute shaders包含当前由计算着色器操作的工作组的索引
GROUP_THREAD_ID MEMORY_BARRIER_SHARED GROUP_THREAD_ID	gl_LocalInvocationID memoryBarrierShared() gl_LocalInvocationID	SV_GroupThreadID GroupMemoryBarrier() SV_GroupThreadID	Contains the index of work item currently being operated on by a compute shaderBlocks execution of all threads in a group until all group shared accesses have been completed包含计算着色器当前正在操作的工作项的索引
DISPATCH_THREAD_ID MEMORY_BARRIER_SHARED_SYNC DISPATCH_THREAD_ID	gl_GlobalInvocationID memoryBarrierShared() barrier() gl_GlobalInvocationID	SV_DispatchThreadID GroupMemoryBarrierWithGroupSync() SV_DispatchThreadID	Contains the global index of work item currently being operated on by a compute shaderBlocks execution of all threads in a group until all group shared accesses have been completed and all threads in the group have reached this call包含当前由计算着色器操作的工作项的全局索引
GROUP_INDEX GROUP_INDEX	gl_LocalInvocationIndex gl_LocalInvocationIndex	SV_GroupIndex SV_GroupIndex	Contains the local linear index of work item currently being operated on by a compute shader包含当前由计算着色器操作的工作项的本地线性索引。

最新更新: 2022-02-18

Help improve this article

Was this article helpful?

Report a problem related to this article

(or select a word/phrase and press Ctrl+Enter)