[cogl] Remove the COGL{enum,int,uint} typedefs

COGLenum, COGLint and COGLuint which were simply typedefs for GL{enum,int,uint}
have been removed from the API and replaced with specialised enum typedefs, int
and unsigned int. These were causing problems for generating bindings and also
considered poor style.

The cogl texture filter defines CGL_NEAREST and CGL_LINEAR etc are now replaced
by a namespaced typedef 'CoglTextureFilter' so they should be replaced with
COGL_TEXTURE_FILTER_NEAREST and COGL_TEXTURE_FILTER_LINEAR etc.

The shader type defines CGL_VERTEX_SHADER and CGL_FRAGMENT_SHADER are handled by
a CoglShaderType typedef and should be replaced with COGL_SHADER_TYPE_VERTEX and
COGL_SHADER_TYPE_FRAGMENT.

cogl_shader_get_parameteriv has been replaced by cogl_shader_get_type and
cogl_shader_is_compiled. More getters can be added later if desired.

clutter/cogl/gles/cogl-shader.c

@@ -48,22 +48,31 @@ _cogl_shader_free (CoglShader *shader)
 }
 
 CoglHandle
-cogl_create_shader (COGLenum shaderType)
+cogl_create_shader (CoglShaderType type)
 {
   CoglShader *shader;
+  GLenum gl_type;
 
-  _COGL_GET_CONTEXT (ctx, 0);
+  if (type == COGL_SHADER_TYPE_VERTEX)
+    gl_type = GL_VERTEX_SHADER;
+  else if (type == COGL_SHADER_TYPE_FRAGMENT)
+    gl_type = GL_FRAGMENT_SHADER;
+  else
+    {
+      g_warning ("Unexpected shader type (0x%08lX) given to "
+                 "cogl_create_shader", (unsigned long) type);
+      return COGL_INVALID_HANDLE;
+    }
 
   shader = g_slice_new (CoglShader);
-  shader->gl_handle = glCreateShader (shaderType);
-  shader->type = shaderType;
+  shader->gl_handle = glCreateShader (gl_type);
 
   return _cogl_shader_handle_new (shader);
 }
 
 void
 cogl_shader_source (CoglHandle   handle,
-                    const gchar *source)
+                    const char  *source)
 {
   CoglShader *shader;
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
@@ -92,11 +101,11 @@ cogl_shader_compile (CoglHandle handle)
 
 void
 cogl_shader_get_info_log (CoglHandle  handle,
-                          guint       size,
-                          gchar      *buffer)
+                          size_t      size,
+                          char       *buffer)
 {
   CoglShader *shader;
-  COGLint len = 0;
+  int len = 0;
   _COGL_GET_CONTEXT (ctx, NO_RETVAL);
 
   if (!cogl_is_shader (handle))
@@ -108,20 +117,48 @@ cogl_shader_get_info_log (CoglHandle  handle,
   buffer[len] = '\0';
 }
 
-void
-cogl_shader_get_parameteriv (CoglHandle  handle,
-                             COGLenum    pname,
-                             COGLint    *dest)
+CoglShaderType
+cogl_shader_get_type (CoglHandle  handle)
 {
+  GLint type;
   CoglShader *shader;
-  _COGL_GET_CONTEXT (ctx, NO_RETVAL);
 
   if (!cogl_is_shader (handle))
-    return;
+    {
+      g_warning ("Non shader handle type passed to cogl_shader_get_type");
+      return COGL_SHADER_TYPE_VERTEX;
+    }
 
   shader = _cogl_shader_pointer_from_handle (handle);
 
-  glGetShaderiv (shader->gl_handle, pname, dest);
+  GE (glGetShaderiv (shader->gl_handle, GL_SHADER_TYPE, &type));
+  if (type == GL_VERTEX_SHADER)
+    return COGL_SHADER_TYPE_VERTEX;
+  else if (type == GL_FRAGMENT_SHADER)
+    return COGL_SHADER_TYPE_VERTEX;
+  else
+    {
+      g_warning ("Unexpected shader type 0x%08lX", (unsigned long)type);
+      return COGL_SHADER_TYPE_VERTEX;
+    }
+}
+
+gboolean
+cogl_shader_is_compiled (CoglHandle handle)
+{
+  GLint status;
+  CoglShader *shader;
+
+  if (!cogl_is_shader (handle))
+    return FALSE;
+
+  shader = _cogl_shader_pointer_from_handle (handle);
+
+  GE (glGetShaderiv (shader->gl_handle, GL_COMPILE_STATUS, &status));
+  if (status == GL_TRUE)
+    return TRUE;
+  else
+    return FALSE;
 }
 
 #else /* HAVE_COGL_GLES2 */
@@ -129,7 +166,7 @@ cogl_shader_get_parameteriv (CoglHandle  handle,
 /* No support on regular OpenGL 1.1 */
 
 CoglHandle
-cogl_create_shader (COGLenum shaderType)
+cogl_create_shader (CoglShaderType type)
 {
   return COGL_INVALID_HANDLE;
 }
@@ -153,7 +190,7 @@ cogl_shader_unref (CoglHandle handle)
 
 void
 cogl_shader_source (CoglHandle  shader,
-                    const gchar   *source)
+                    const char   *source)
 {
 }
 
@@ -164,16 +201,21 @@ cogl_shader_compile (CoglHandle shader_handle)
 
 void
 cogl_shader_get_info_log (CoglHandle  handle,
-                          guint       size,
-                          gchar      *buffer)
+                          size_t      size,
+                          char       *buffer)
 {
 }
 
-void
-cogl_shader_get_parameteriv (CoglHandle  handle,
-                             COGLenum    pname,
-                             COGLint    *dest)
+CoglShaderType
+cogl_shader_get_type (CoglHandle  handle)
 {
+  return COGL_SHADER_TYPE_VERTEX;
+}
+
+gboolean
+cogl_shader_is_compiled (CoglHandle handle)
+{
+  return FALSE;
 }
 
 #endif /* HAVE_COGL_GLES2 */