Add some utility functions for textures

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

diff --git a/source/texture.cpp b/source/texture.cpp
index 004d78c2abc38d1b9bc383b361cefae647b8ac06..b528ca30f5b6ccaee0ac81c0e78e86226f345a1a 100644 (file)
--- a/source/texture.cpp
+++ b/source/texture.cpp
@@ -78,7 +78,7 @@ Texture::~Texture()
 
 DataType Texture::get_alloc_type(PixelFormat fmt)
 {
-       return (fmt==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
+       return (get_base_pixelformat(fmt)==DEPTH_COMPONENT ? UNSIGNED_SHORT : UNSIGNED_BYTE);
 }
 
 void Texture::update_parameter(int mask) const
@@ -364,5 +364,12 @@ void Texture::Loader::wrap_t(TextureWrap w)
        obj.set_wrap_t(w);
 }
 
+
+bool is_mipmapped(TextureFilter filter)
+{
+       return (filter==NEAREST_MIPMAP_NEAREST || filter==NEAREST_MIPMAP_LINEAR ||
+               filter==LINEAR_MIPMAP_NEAREST || filter==LINEAR_MIPMAP_LINEAR);
+}
+
 } // namespace GL
 } // namespace Msp