X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Ftexture3d.cpp;h=03a64f1cf83abdf8b4de758f8f1c2a44075b74a8;hp=984ffac7d4ef1a07985b3bf033915bbac3cf5b57;hb=ada4b7614137221b64a00f31fde1498064e9fb19;hpb=6065f6622cc275dc0b20baaf7c267e71169d18f3

diff --git a/source/core/texture3d.cpp b/source/core/texture3d.cpp
index 984ffac7..03a64f1c 100644
--- a/source/core/texture3d.cpp
+++ b/source/core/texture3d.cpp
@@ -16,16 +16,14 @@ Texture3D::Texture3D(GLenum t):
 	Texture(t),
 	width(0),
 	height(0),
-	depth(0),
-	allocated(0)
+	depth(0)
 { }
 
 Texture3D::Texture3D():
 	Texture(GL_TEXTURE_3D),
 	width(0),
 	height(0),
-	depth(0),
-	allocated(0)
+	depth(0)
 {
 	static Require _req(EXT_texture3D);
 }
@@ -48,60 +46,38 @@ void Texture3D::storage(PixelFormat fmt, unsigned wd, unsigned ht, unsigned dp,
 	levels = get_n_levels();
 	if(lv>0)
 		levels = min(levels, lv);
-}
-
-void Texture3D::allocate(unsigned level)
-{
-	if(width==0 || height==0 || depth==0)
-		throw invalid_operation("Texture3D::allocate");
-	if(level>=levels)
-		throw invalid_argument("Texture3D::allocate");
-	if(allocated&(1<<level))
-		return;
 
+	GLenum gl_fmt = get_gl_pixelformat(storage_fmt);
 	if(ARB_texture_storage)
 	{
-		GLenum fmt = get_gl_pixelformat(storage_fmt);
 		if(ARB_direct_state_access)
-			glTextureStorage3D(id, levels, fmt, width, height, depth);
+			glTextureStorage3D(id, levels, gl_fmt, width, height, depth);
 		else
 		{
 			bind_scratch();
-			glTexStorage3D(target, levels, fmt, width, height, depth);
+			glTexStorage3D(target, levels, gl_fmt, width, height, depth);
 		}
-		apply_swizzle();
-		allocated |= (1<<levels)-1;
 	}
 	else
-		image(level, 0);
-}
-
-void Texture3D::image(unsigned level, const void *data)
-{
-	if(width==0 || height==0 || depth==0)
-		throw invalid_operation("Texture3D::image");
-	if(level>=levels)
-		throw out_of_range("Texture3D::image");
-
-	LinAl::Vector<unsigned, 3> size = get_level_size(level);
-
-	if(ARB_texture_storage)
-		return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
-
-	bind_scratch();
-
-	if(!allocated)
 	{
+		bind_scratch();
+		GLenum comp = get_gl_components(get_components(storage_fmt));
+		GLenum type = get_gl_type(get_component_type(storage_fmt));
+		for(unsigned i=0; i<levels; ++i)
+		{
+			LinAl::Vector<unsigned, 3> lv_size = get_level_size(i);
+			glTexImage3D(target, i, gl_fmt, lv_size.x, lv_size.y, lv_size.z, 0, comp, type, 0);
+		}
 		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
-		apply_swizzle();
 	}
 
-	GLenum fmt = get_gl_pixelformat(storage_fmt);
-	GLenum comp = get_gl_components(get_components(storage_fmt));
-	GLenum type = get_gl_type(get_component_type(storage_fmt));
-	glTexImage3D(target, level, fmt, size.x, size.y, size.z, 0, comp, type, data);
+	apply_swizzle();
+}
 
-	allocated |= 1<<level;
+void Texture3D::image(unsigned level, const void *data)
+{
+	LinAl::Vector<unsigned, 3> size = get_level_size(level);
+	return sub_image(level, 0, 0, 0, size.x, size.y, size.z, data);
 }
 
 void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsigned ht, unsigned dp, const void *data)
@@ -111,8 +87,6 @@ void Texture3D::sub_image(unsigned level, int x, int y, int z, unsigned wd, unsi
 	if(level>=levels)
 		throw out_of_range("Texture3D::sub_image");
 
-	allocate(level);
-
 	GLenum comp = get_gl_components(get_components(storage_fmt));
 	GLenum type = get_gl_type(get_component_type(storage_fmt));
 	if(ARB_direct_state_access)