Texture documentation reorganization.

The part similar for all AbstractTexture subclasses should be in
AbstractTexture itself, not anywhere else.

src/AbstractTexture.h

@@ -24,10 +24,20 @@
 namespace Magnum {
 
 /**
-@brief Non-templated base for one-, two- or three-dimensional textures.
+@brief Base for textures
+
+@attention Don't forget to call @ref Texture::setWrapping() "setWrapping()",
+setMinificationFilter() and setMagnificationFilter() after creating the
+texture, otherwise the texture will be incomplete. If you specified mipmap
+filtering in setMinificationFilter(), be sure to also either explicitly set
+all mip levels or call generateMipmap().
+
+The texture is bound via bind() and setting texture uniform on the shader to the
+texture (see AbstractShaderProgram::setUniform(GLint, const AbstractTexture*)).
 
 See Texture, CubeMapTexture and CubeMapTextureArray documentation for more
 information.
+
 @todo Add glPixelStore encapsulation
 */
 class MAGNUM_EXPORT AbstractTexture {

src/CubeMapTexture.h

@@ -26,9 +26,10 @@ namespace Magnum {
 /**
 @brief Cube map texture
 
-%Texture used mainly for environemnt maps, consisting of 6 square textures
-generating 6 faces of the cube as following. Note that all images must be
-turned upside down (+Y is top):
+%Texture used mainly for environemnt maps. See AbstractTexture documentation
+for more information about usage. It consists of 6 square textures generating
+6 faces of the cube as following. Note that all images must be turned upside
+down (+Y is top):
 
               +----+
               | -Y |
@@ -42,7 +43,7 @@ When using cube map texture in the shader, use `samplerCube`. Unlike classic
 textures, coordinates for cube map textures is signed three-part vector from
 the center of the cube, which intersects one of the six sides of the cube map.
 
-See Texture documentation for more information about usage.
+See AbstractTexture documentation for more information about usage.
 
 @see CubeMapTextureArray
 */

src/CubeMapTextureArray.h

@@ -26,7 +26,7 @@ namespace Magnum {
 /**
 @brief Cube map texture array
 
-For information about usage, see CubeMapTexture class documentation.
+For information about usage, see CubeMapTexture documentation.
 
 When using cube map texture in the shader, use `samplerCubeArray`. Unlike
 classic textures, coordinates for cube map textures is signed three-part

src/Texture.h

@@ -26,16 +26,9 @@ namespace Magnum {
 /**
 @brief %Texture
 
-Template class for one- to three-dimensional textures.
+Template class for one- to three-dimensional textures. See AbstractTexture
+documentation for more information about usage.
 
-@attention Don't forget to call setWrapping(), setMinificationFilter() and
-setMagnificationFilter() after creating the texture, otherwise the texture
-will be incomplete. If you specified mipmap filtering in
-setMinificationFilter(), be sure to also either explicitly set all mip levels
-or call generateMipmap().
-
-The texture is bound via bind() and setting texture uniform on the shader to the
-texture (see AbstractShaderProgram::setUniform(GLint, const AbstractTexture*)).
 In shader, the texture is used via `sampler1D`, `sampler2D` or `sampler3D`
 depending on dimension count. Note that you can have more than one texture bound
 to the shader - the only requirement is to have each texture in another layer.