X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fcore%2Ftexturecube.cpp;h=516dca5209c9e571c7dc1a19093712fdfda201e1;hp=4bbf7e6f5d07da4e1f322775124e1b3eefe9de79;hb=b7ecc29c204faede028556d1942b2d61d5cda9ee;hpb=6065f6622cc275dc0b20baaf7c267e71169d18f3

diff --git a/source/core/texturecube.cpp b/source/core/texturecube.cpp
index 4bbf7e6f..516dca52 100644
--- a/source/core/texturecube.cpp
+++ b/source/core/texturecube.cpp
@@ -13,7 +13,7 @@ using namespace std;
 namespace Msp {
 namespace GL {
 
-TextureCubeFace TextureCube::face_order[6] =
+const TextureCubeFace TextureCube::face_order[6] =
 {
 	POSITIVE_X,
 	NEGATIVE_X,
@@ -23,7 +23,7 @@ TextureCubeFace TextureCube::face_order[6] =
 	NEGATIVE_Z
 };
 
-Vector3 TextureCube::directions[6] =
+const Vector3 TextureCube::directions[6] =
 {
 	Vector3(1, 0, 0),
 	Vector3(-1, 0, 0),
@@ -33,7 +33,7 @@ Vector3 TextureCube::directions[6] =
 	Vector3(0, 0, -1)
 };
 
-unsigned TextureCube::orientations[12] =
+const unsigned TextureCube::orientations[12] =
 {
 	5, 3,
 	4, 3,
@@ -45,12 +45,18 @@ unsigned TextureCube::orientations[12] =
 
 TextureCube::TextureCube():
 	Texture(GL_TEXTURE_CUBE_MAP),
-	size(0),
-	allocated(0)
+	size(0)
 {
 	static Require _req(ARB_texture_cube_map);
 	if(ARB_seamless_cube_map)
-		glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
+	{
+		static bool seamless_init = false;
+		if(!seamless_init)
+		{
+			glEnable(GL_TEXTURE_CUBE_MAP_SEAMLESS);
+			seamless_init = true;
+		}
+	}
 }
 
 void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
@@ -69,74 +75,39 @@ void TextureCube::storage(PixelFormat fmt, unsigned sz, unsigned lv)
 	levels = get_n_levels();
 	if(lv>0)
 		levels = min(levels, lv);
-}
-
-void TextureCube::allocate(unsigned level)
-{
-	if(size==0)
-		throw invalid_operation("TextureCube::allocate");
-	if(level>=levels)
-		throw invalid_argument("TextureCube::allocate");
-	if(allocated&(64<<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)
-			glTextureStorage2D(id, levels, fmt, size, size);
+			glTextureStorage2D(id, levels, gl_fmt, size, size);
 		else
 		{
 			bind_scratch();
-			glTexStorage2D(target, levels, fmt, size, size);
+			glTexStorage2D(target, levels, gl_fmt, size, size);
 		}
-		apply_swizzle();
-		allocated |= (64<<levels)-1;
 	}
 	else
 	{
-		for(unsigned i=0; i<6; ++i)
-			image(enumerate_faces(i), level, 0);
+		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)
+		{
+			unsigned lv_size = get_level_size(i);
+			for(unsigned j=0; j<6; ++j)
+				glTexImage2D(enumerate_faces(j), i, gl_fmt, lv_size, lv_size, 0, comp, type, 0);
+		}
+		glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, levels-1);
 	}
+
+	apply_swizzle();
 }
 
 void TextureCube::image(TextureCubeFace face, unsigned level, const void *data)
 {
-	if(size==0)
-		throw invalid_operation("TextureCube::image");
-	if(level>=levels)
-		throw out_of_range("TextureCube::image");
-
 	unsigned lsz = get_level_size(level);
-
-	if(ARB_texture_storage)
-		return sub_image(face, level, 0, 0, lsz, lsz, data);
-
-	if(!allocated)
-	{
-		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));
-	glTexImage2D(face, level, fmt, lsz, lsz, 0, comp, type, data);
-
-	if(level==0)
-	{
-		allocated |= 1<<get_face_index(face);
-		if((allocated&63)==63)
-			allocated |= 64;
-	}
-	else if(!(allocated&(64<<level)))
-	{
-		for(unsigned i=0; i<6; ++i)
-			if(enumerate_faces(i)!=face)
-				glTexImage2D(enumerate_faces(i), level, fmt, lsz, lsz, 0, comp, type, 0);
-
-		allocated |= 64<<level;
-	}
+	return sub_image(face, level, 0, 0, lsz, lsz, data);
 }
 
 void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y, unsigned wd, unsigned ht, const void *data)
@@ -146,8 +117,6 @@ void TextureCube::sub_image(TextureCubeFace face, unsigned level, int x, int y,
 	if(level>=levels)
 		throw out_of_range("TextureCube::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)