99 lines
3.4 KiB
C++
99 lines
3.4 KiB
C++
#include<hgl/graph/Texture1D.h>
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#include<hgl/LogInfo.h>
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namespace hgl
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{
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namespace graph
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{
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class Texture1DDSA:public Texture1D
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{
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public:
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using Texture1D::Texture1D;
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bool _SetImage(Texture1DData *tex) override
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{
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glTextureStorage1D(texture_id, 1, tex->video_format, tex->length);
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if(!tex->bitmap)
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return(true);
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if(tex->source_format->compress) //原本就是压缩格式
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glCompressedTextureSubImage1D(texture_id, 0, 0, tex->length, tex->video_format, tex->bitmap_bytes, tex->bitmap);
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else //正常非压缩格式
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glTextureSubImage1D(texture_id, 0, 0, tex->length, tex->source_format->pixel_format, tex->source_format->data_type, tex->bitmap);
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if(tex->gen_mipmaps)
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{
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glGenerateTextureMipmap(texture_id);
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// glTexEnvf(GL_TEXTURE_FILTER_CONTROL,GL_TEXTURE_LOD_BIAS,-1.5f); //设置LOD偏向,负是更精细，正是更模糊
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}
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return(true);
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}
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int _GetImage(void *data_pointer, TSF fmt, int level) override
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{
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int compress;
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int bytes;
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const TextureFormat *tsf = TextureFormatInfoList + fmt;
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glGetTextureLevelParameteriv(texture_id, level, GL_TEXTURE_COMPRESSED, &compress);
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if (compress)
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{
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glGetTextureLevelParameteriv(texture_id, level, GL_TEXTURE_COMPRESSED_IMAGE_SIZE, &bytes);
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if (data_pointer)
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glGetCompressedTextureImage(texture_id, level, bytes, data_pointer);
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}
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else
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{
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if (tsf->video_bytes == 0)return(-1);
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bytes = length*tsf->video_bytes;
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if (data_pointer)
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glGetTextureImage(texture_id, level, tsf->pixel_format, tsf->data_type, bytes, data_pointer);
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}
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return(bytes);
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}
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bool _ChangeImage(uint s, uint l, void *data, uint bytes, TSF sf) override
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{
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const TextureFormat *sfmt = TextureFormatInfoList + sf; //原始数据格式
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if (sfmt->compress)
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glCompressedTextureSubImage1D(texture_id, 0, s, l, sfmt->video_format, bytes, data);
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else
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glTextureSubImage1D(texture_id, 0, s, l, sfmt->pixel_format, sfmt->data_type, data);
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return(true);
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}
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void GenMipmaps() override
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{
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glGenerateTextureMipmap(texture_id);
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}
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void GetMipmapLevel(int &base_level,int &max_level) override
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{
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glGetTextureParameteriv(texture_id,GL_TEXTURE_BASE_LEVEL,&base_level);
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glGetTextureParameteriv(texture_id,GL_TEXTURE_MAX_LEVEL,&max_level);
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}
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};//class Texture1DDSA:public Texture1D
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Texture1D *CreateTexture1DDSA()
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{
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uint id;
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glCreateTextures(GL_TEXTURE_1D,1,&id);
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return(new Texture1DDSA(id));
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}
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}//namespace graph
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}//namespace hgl
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