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improvement the ShaderResource module

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This commit is contained in:
hyzboy 2020-06-09 14:05:20 +08:00
parent ca44bf2cf7
commit 30b5639acc
1 changed files with 35 additions and 14 deletions
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49
src/SceneGraph/shader/ShaderResource.cpp
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@ -8,10 +8,17 @@ namespace hgl
{
namespace
{
constexpr char SHADER_FILE_HEADER[]="Shader\x1A";
constexpr uint SHADER_FILE_HEADER_BYTES=sizeof(SHADER_FILE_HEADER)-1;
constexpr char SHADER_FILE_HEADER[] ="Shader\x1A";
constexpr uint SHADER_FILE_HEADER_BYTES=sizeof(SHADER_FILE_HEADER)-1;
uint8 *LoadShaderStages(ShaderStageList &ss_list,uint8 *data)
constexpr uint32 SHADER_FILE_MIN_SIZE =SHADER_FILE_HEADER_BYTES
+1 //version
+sizeof(uint32) //shader flag
+sizeof(uint32) //spv_size
+1 //input states count
+1; //output states count
const uint8 *LoadShaderStages(ShaderStageList &ss_list,const uint8 *data)
{
const uint count=*data++;
@ -47,7 +54,7 @@ namespace hgl
return data;
}
uint8 *LoadShaderDescriptor(ShaderDescriptorList &sd_list,uint8 *data)
const uint8 *LoadShaderDescriptor(ShaderDescriptorList &sd_list,const uint8 *data)
{
const uint32 total_bytes=*(uint32 *)data;
data+=sizeof(uint32);
@ -72,19 +79,34 @@ namespace hgl
}
}//namespcae
ShaderResource::ShaderResource(const void *fd,const void *sd,const uint32 size)
{
data=fd;
spv_data=sd;
spv_size=size;
}
ShaderResource::~ShaderResource()
{
delete[] data;
}
ShaderResource *LoadShaderResoruce(const OSString &filename)
{
int64 filesize;
AutoDeleteArray<uint8> origin_filedata=(uint8 *)filesystem::LoadFileToMemory(filename,filesize);
uint8 *origin_filedata=(uint8 *)filesystem::LoadFileToMemory(filename,filesize);
uint8 *filedata=origin_filedata;
if(!origin_filedata)return(nullptr);
if(!filedata)return(nullptr);
const uint8 *file_end=filedata+filesize;
if(memcmp(filedata,SHADER_FILE_HEADER,SHADER_FILE_HEADER_BYTES))
if(filesize<SHADER_FILE_MIN_SIZE
||memcmp(origin_filedata,SHADER_FILE_HEADER,SHADER_FILE_HEADER_BYTES))
{
delete[] origin_filedata;
return(false);
}
const uint8 *filedata=origin_filedata;
const uint8 *file_end=filedata+filesize;
filedata+=SHADER_FILE_HEADER_BYTES;
@ -97,10 +119,9 @@ namespace hgl
const uint32 spv_size=*(uint32 *)filedata;
filedata+=sizeof(uint32);
const void *spv_data=filedata;
filedata+=spv_size;
ShaderResource *sr=new ShaderResource(origin_filedata,filedata,spv_size);
ShaderResource *sr=new ShaderResource;
filedata+=spv_size;
filedata=LoadShaderStages(sr->GetInputStages(),filedata);
filedata=LoadShaderStages(sr->GetOutputStages(),filedata);