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https://github.com/ultimatepp/ultimatepp.git
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94 lines
No EOL
2.5 KiB
C++
94 lines
No EOL
2.5 KiB
C++
#include "GLDraw.h"
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#define LTIMING(x) // RTIMING(x)
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#define LLOG(x) // DLOG(x)
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namespace Upp {
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GLuint CreateGLTexture(const Image& img, dword flags)
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{
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Size sz = img.GetSize();
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GLuint texture_id;
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glGenTextures(1, &texture_id);
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glBindTexture(GL_TEXTURE_2D, texture_id);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, sz.cx, sz.cy, 0, GL_BGRA, GL_UNSIGNED_BYTE, ~img);
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if(flags & TEXTURE_MIPMAP)
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glGenerateMipmap(GL_TEXTURE_2D);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, flags & TEXTURE_LINEAR ? GL_LINEAR : GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, flags & TEXTURE_LINEAR ?
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flags & TEXTURE_MIPMAP ? GL_LINEAR_MIPMAP_LINEAR
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: GL_LINEAR
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: GL_NEAREST);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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return texture_id;
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}
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struct ImageGLData {
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Image img;
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GLuint texture_id;
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void Init(const Image& img, dword flags);
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~ImageGLData();
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};
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void ImageGLData::Init(const Image& img, dword flags)
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{
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LTIMING("CreateTexture");
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texture_id = CreateGLTexture(img, flags);
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LLOG("Texture id created: " << texture_id);
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SysImageRealized(img);
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}
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static LRUCache<ImageGLData, Tuple<uint64, uint64, dword> > sTextureCache;
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static bool sReset;
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ImageGLData::~ImageGLData()
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{
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SysImageReleased(img);
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if(!sReset)
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glDeleteTextures(1, &texture_id);
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LLOG("Texture id deleted: " << texture_id);
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}
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void GLDraw::ClearCache()
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{
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sReset = false;
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sTextureCache.Clear();
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}
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void GLDraw::ResetCache()
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{
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sReset = true;
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sTextureCache.Clear();
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sReset = false;
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}
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struct ImageGLDataMaker : LRUCache<ImageGLData, Tuple<uint64, uint64, dword> >::Maker {
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Image img;
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uint64 context;
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dword flags;
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virtual Tuple<uint64, uint64, dword> Key() const { return MakeTuple(img.GetSerialId(), context, flags); }
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virtual int Make(ImageGLData& object) const { object.Init(img, flags); return img.GetLength(); }
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};
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int max_texture_memory = 4 * 1024 * 768;
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int max_texture_count = 1000;
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GLuint GetTextureForImage(dword flags, const Image& img, uint64 context)
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{
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sTextureCache.Shrink(max_texture_memory, max_texture_count);
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ImageGLDataMaker m;
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m.img = img;
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m.context = context;
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m.flags = flags;
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return sTextureCache.Get(m).texture_id;
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}
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}; |