Pull in sized depth component formats from ARB_depth_texture

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

diff --git a/source/texturecube.cpp b/source/texturecube.cpp
index 576f1c718b3848aa043cb165b04a578f83500a70..3c6f23bd94f05443fd5e872febca8edf19555875 100644 (file)
--- a/source/texturecube.cpp
+++ b/source/texturecube.cpp
@@ -1,3 +1,4 @@
+#include <msp/datafile/collection.h>
 #include <msp/gl/extensions/arb_texture_cube_map.h>
 #include <msp/io/memory.h>
 #include <msp/strings/format.h>
@@ -97,6 +98,30 @@ void TextureCube::image(TextureCubeFace face, const Graphics::Image &img, bool s
        image(face, 0, fmt, UNSIGNED_BYTE, img.get_data());
 }
 
+void TextureCube::image(const Graphics::Image &img, bool srgb)
+{
+       unsigned w = img.get_width();
+       unsigned h = img.get_height();
+
+       if(h!=w*6)
+               throw incompatible_data("TextureCube::image");
+       h /= 6;
+
+       PixelFormat fmt = pixelformat_from_graphics(img.get_format());
+       if(size==0)
+               storage(storage_pixelformat_from_graphics(img.get_format(), srgb), w);
+       else if(w!=size || h!=size)
+               throw incompatible_data("TextureCube::image");
+
+       PixelStore pstore = PixelStore::from_image(img);
+       BindRestore _bind_ps(pstore);
+
+       const char *cdata = reinterpret_cast<const char *>(img.get_data());
+       unsigned face_size = img.get_stride()*size;
+       for(unsigned i=0; i<6; ++i)
+               image(enumerate_faces(i), 0, fmt, UNSIGNED_BYTE, cdata+i*face_size);
+}
+
 unsigned TextureCube::get_level_size(unsigned level)
 {
        return size>>level;
@@ -188,11 +213,21 @@ TextureCube::Loader::Loader(TextureCube &t, Collection &c):
 
 void TextureCube::Loader::init()
 {
+       add("external_image", &Loader::external_image);
        add("image_data", &Loader::image_data);
        add("raw_data", &Loader::raw_data);
        add("storage", &Loader::storage);
 }
 
+void TextureCube::Loader::external_image(TextureCubeFace face, const string &fn)
+{
+       Graphics::Image img;
+       RefPtr<IO::Seekable> io = get_collection().open_raw(fn);
+       img.load_io(*io);
+
+       obj.image(face, img, srgb);
+}
+
 void TextureCube::Loader::image_data(TextureCubeFace face, const string &data)
 {
        Graphics::Image img;