Additional overloads for creating pipelines

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

diff --git a/source/texture2d.cpp b/source/texture2d.cpp
index f36cadae09aaa21f6abd7f97729d16bf34f6d714..7ce18d00a9fa075b5df6b2a5ea1dac741411165f 100644 (file)
--- a/source/texture2d.cpp
+++ b/source/texture2d.cpp
@@ -1,4 +1,6 @@
-#include <msp/io/memory.h>
+#include <msp/core/raii.h>
+#include <msp/gl/extensions/arb_direct_state_access.h>
+#include <msp/gl/extensions/arb_texture_storage.h>
 #include "bindable.h"
 #include "buffer.h"
 #include "error.h"
@@ -16,6 +18,7 @@ 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 +28,7 @@ private:
 public:
        AsyncLoader(Texture2D &, IO::Seekable &);
 
+       void set_srgb_conversion(bool);
        virtual bool needs_sync() const;
        virtual bool process();
 };
@@ -37,15 +41,19 @@ Texture2D::Texture2D(ResourceManager *m):
        allocated(0)
 { }
 
+Texture2D::~Texture2D()
+{
+       set_manager(0);
+}
+
 void Texture2D::storage(PixelFormat fmt, unsigned wd, unsigned ht)
 {
        if(width>0)
                throw invalid_operation("Texture2D::storage");
        if(wd==0 || ht==0)
                throw invalid_argument("Texture2D::storage");
-       require_pixelformat(fmt);
 
-       ifmt = fmt;
+       set_internal_format(fmt);
        width = wd;
        height = ht;
 }
@@ -55,7 +63,23 @@ void Texture2D::allocate(unsigned level)
        if(allocated&(1<<level))
                return;
 
-       image(level, get_base_pixelformat(ifmt), UNSIGNED_BYTE, 0);
+       if(ARB_texture_storage)
+       {
+               unsigned n_levels = (is_mipmapped(min_filter) ? get_n_levels() : 1);
+               if(ARB_direct_state_access)
+                       glTextureStorage2D(id, n_levels, ifmt, width, height);
+               else
+               {
+                       BindRestore _bind(this);
+                       glTexStorage2D(target, n_levels, ifmt, width, height);
+               }
+               allocated |= (1<<n_levels)-1;
+       }
+       else
+       {
+               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)
@@ -67,14 +91,17 @@ void Texture2D::image(unsigned level, PixelFormat fmt, DataType type, const void
        unsigned h = height;
        get_level_size(level, w, h);
 
+       if(ARB_texture_storage)
+               return sub_image(level, 0, 0, w, h, fmt, type, data);
+
        BindRestore _bind(this);
-       glTexImage2D(target, level, ifmt, w, h, 0, fmt, type, data);
+       glTexImage2D(target, level, ifmt, w, h, 0, get_upload_format(fmt), type, data);
 
        allocated |= 1<<level;
        if(gen_mipmap && level==0)
        {
-               for(; (w || h); w>>=1, h>>=1, ++level) ;
-               allocated |= (1<<level)-1;
+               auto_generate_mipmap();
+               allocated |= (1<<get_n_levels())-1;
        }
 }
 
@@ -83,18 +110,17 @@ void Texture2D::sub_image(unsigned level, int x, int y, unsigned wd, unsigned ht
        if(width==0 || height==0)
                throw invalid_operation("Texture2D::sub_image");
 
+       Conditional<BindRestore> _bind(!ARB_direct_state_access, this);
        allocate(level);
 
-       BindRestore _bind(this);
-       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);
+       fmt = get_upload_format(fmt);
+       if(ARB_direct_state_access)
+               glTextureSubImage2D(id, level, x, y, wd, ht, fmt, type, data);
+       else
+               glTexSubImage2D(target, level, x, y, wd, ht, fmt, type, data);
 
-       image(img, srgb);
+       if(gen_mipmap && level==0)
+               auto_generate_mipmap();
 }
 
 void Texture2D::image(const Graphics::Image &img, bool srgb)
@@ -108,12 +134,7 @@ 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");
 
@@ -123,7 +144,14 @@ void Texture2D::image(const Graphics::Image &img, bool srgb, bool from_buffer)
        image(0, fmt, UNSIGNED_BYTE, from_buffer ? 0 : img.get_data());
 }
 
-void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h)
+unsigned Texture2D::get_n_levels() const
+{
+       unsigned n = 0;
+       for(unsigned s=max(width, height); s; s>>=1, ++n) ;
+       return n;
+}
+
+void Texture2D::get_level_size(unsigned level, unsigned &w, unsigned &h) const
 {
        w >>= level;
        h >>= level;
@@ -134,15 +162,25 @@ 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_pixel_size(ifmt) : 0;
 }
 
 void Texture2D::unload()
 {
        glDeleteTextures(1, &id);
        id = 0;
+       // TODO check which params actually need refreshing
+       dirty_params = -1;
 }
 
 
@@ -160,19 +198,8 @@ 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)
@@ -187,21 +214,19 @@ void Texture2D::Loader::storage(PixelFormat fmt, unsigned w, unsigned h)
        obj.storage(fmt, w, h);
 }
 
-void Texture2D::Loader::storage_b(PixelFormat fmt, unsigned w, unsigned h, unsigned)
-{
-       storage(fmt, w, h);
-}
-
 
 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
@@ -237,7 +262,9 @@ 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;