Implement loading functionality for texture classes that were missing it

[libs/gl.git] / source / texture2d.cpp

diff --git a/source/texture2d.cpp b/source/texture2d.cpp
index 2da1c25245b1064cf8da073c8e9c4d919fb9417a..2189fa83360ba5ed93264f84383f249a236b7e0b 100644 (file)
--- a/source/texture2d.cpp
+++ b/source/texture2d.cpp
@@ -1,4 +1,3 @@
-#include <msp/io/memory.h>
 #include "bindable.h"
 #include "buffer.h"
 #include "error.h"
@@ -16,6 +15,7 @@ class Texture2D::AsyncLoader: public Resource::AsyncLoader
 private:
        Texture2D &texture;
        IO::Seekable &io;
+       bool srgb_conversion;
        Buffer pixel_buffer;
        char *mapped_address;
        Graphics::Image image;
@@ -25,6 +25,7 @@ private:
 public:
        AsyncLoader(Texture2D &, IO::Seekable &);
 
+       void set_srgb_conversion(bool);
        virtual bool needs_sync() const;
        virtual bool process();
 };
@@ -32,11 +33,17 @@ public:
 
 Texture2D::Texture2D(ResourceManager *m):
        Texture(GL_TEXTURE_2D, m),
+       ifmt(RGB),
        width(0),
        height(0),
        allocated(0)
 { }
 
+Texture2D::~Texture2D()
+{
+       set_manager(0);
+}
+
 void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 {
        if(width>0)
@@ -55,7 +62,8 @@ void Texture2D::allocate(unsigned level)
        if(allocated&(1<<level))
                return;
 
-       image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
+       PixelFormat base_fmt = get_base_pixelformat(ifmt);
+       image(level, base_fmt, get_alloc_type(base_fmt), 0);
 }
 
 void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void *data)
@@ -73,6 +81,7 @@ void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void
        allocated |= 1<<level;
        if(gen_mipmap && level==0)
        {
+               auto_generate_mipmap();
                for(; (w || h); w>>=1, h>>=1, ++level) ;
                allocated |= (1<<level)-1;
        }
@@ -89,14 +98,6 @@ void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht
        glTexSubImage2D(target, level, x, y, wd, ht, fmt, type, data);
 }
 
-void Texture2D::load_image(const string &fn, bool srgb)
-{
-       Graphics::Image img;
-       img.load_file(fn);
-
-       image(img, srgb);
-}
-
 void Texture2D::image(const Graphics::Image &img, bool srgb)
 {
        image(img, srgb, false);
@@ -108,12 +109,7 @@ void Texture2D::image(const Graphics::Image &img, bool srgb, bool from_buffer)
        unsigned h = img.get_height();
        PixelFormat fmt = pixelformat_from_graphics(img.get_format());
        if(width==0)
-       {
-               PixelFormat f = storage_pixelformat_from_graphics(img.get_format());
-               if(srgb)
-                       f = get_srgb_pixelformat(f);
-               storage(f, w, h);
-       }
+               storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w, h);
        else if(w!=width || h!=height)
                throw incompatible_data("Texture2D::image");
 
@@ -134,9 +130,17 @@ void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h)
                h = 1;
 }
 
-Resource::AsyncLoader *Texture2D::load(IO::Seekable &io)
+Resource::AsyncLoader *Texture2D::load(IO::Seekable &io, const Resources *res)
 {
-       return new AsyncLoader(*this, io);
+       AsyncLoader *ldr = new AsyncLoader(*this, io);
+       if(res)
+               ldr->set_srgb_conversion(res->get_srgb_conversion());
+       return ldr;
+}
+
+UInt64 Texture2D::get_data_size() const
+{
+       return id ? width*height*get_component_count(ifmt) : 0;
 }
 
 void Texture2D::unload()
@@ -162,21 +166,11 @@ Texture2D::Loader::Loader(Texture2D &t, Collection &c):
 
 void Texture2D::Loader::init()
 {
-       add("image_data", &Loader::image_data);
        add("raw_data", &Loader::raw_data);
        add("storage", &Loader::storage);
        add("storage", &Loader::storage_b);
 }
 
-void Texture2D::Loader::image_data(const string &data)
-{
-       Graphics::Image img;
-       IO::Memory mem(data.data(), data.size());
-       img.load_io(mem);
-
-       obj.image(img, srgb);
-}
-
 void Texture2D::Loader::raw_data(const string &data)
 {
        obj.image(0, get_base_pixelformat(obj.ifmt), UNSIGNED_BYTE, data.data());
@@ -198,12 +192,15 @@ void Texture2D::Loader::storage_b(PixelFormat fmt, unsigned w, unsigned h, unsig
 Texture2D::AsyncLoader::AsyncLoader(Texture2D &t, IO::Seekable &i):
        texture(t),
        io(i),
+       srgb_conversion(false),
        pixel_buffer(PIXEL_UNPACK_BUFFER),
        mapped_address(0),
        phase(0)
+{ }
+
+void Texture2D::AsyncLoader::set_srgb_conversion(bool c)
 {
-       if(!texture.id)
-               glGenTextures(1, &texture.id);
+       srgb_conversion = c;
 }
 
 bool Texture2D::AsyncLoader::needs_sync() const
@@ -239,7 +236,9 @@ bool Texture2D::AsyncLoader::process()
                        return false;
                }
 
-               texture.image(image, false, true);
+               if(!texture.id)
+                       glGenTextures(1, &texture.id);
+               texture.image(image, srgb_conversion, true);
        }
 
        ++phase;