lib/glesv2: intro GLEnum and subclass GLError and GLFloatDataType

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/lib/glesv2/glesv2.nit b/lib/glesv2/glesv2.nit
index 477fc47..bd19380 100644 (file)
--- a/lib/glesv2/glesv2.nit
+++ b/lib/glesv2/glesv2.nit
@@ -317,8 +317,17 @@ extern class GLfloatArray `{GLfloat *`}
        `}
 end
 
+# General type for OpenGL enumerations
+extern class GLEnum `{ GLenum `}
+
+       redef fun hash `{ return recv; `}
+
+       redef fun ==(o) do return o != null and is_same_type(o) and o.hash == self.hash
+end
+
 # An OpenGL ES 2.0 error code
-extern class GLError `{ GLenum `}
+extern class GLError
+       super GLEnum
        fun is_ok: Bool do return is_no_error
        fun is_no_error: Bool `{ return recv == GL_NO_ERROR; `}
        fun is_invalid_enum: Bool `{ return recv == GL_INVALID_ENUM; `}
@@ -397,7 +406,9 @@ fun gl_shader_compiler: Bool do return gl_get_bool(0x8DFA)
 #
 # Only data types supported by shader attributes, as seen with
 # `GLProgram::active_attrib_type`.
-extern class GLFloatDataType `{ GLenum `}
+extern class GLFloatDataType
+       super GLEnum
+
        fun is_float: Bool `{ return recv == GL_FLOAT; `}
        fun is_float_vec2: Bool `{ return recv == GL_FLOAT_VEC2; `}
        fun is_float_vec3: Bool `{ return recv == GL_FLOAT_VEC3; `}
@@ -405,6 +416,12 @@ extern class GLFloatDataType `{ GLenum `}
        fun is_float_mat2: Bool `{ return recv == GL_FLOAT_MAT2; `}
        fun is_float_mat3: Bool `{ return recv == GL_FLOAT_MAT3; `}
        fun is_float_mat4: Bool `{ return recv == GL_FLOAT_MAT4; `}
+
+       # Instances of `GLFloatDataType` can be equal to instances of `GLDataType`
+       redef fun ==(o)
+       do
+               return o != null and o isa GLFloatDataType and o.hash == self.hash
+       end
 end
 
 # All data types of OpenGL ES 2.0 shaders