GLX: Fix protocol for glTexSubImage#D

The TexSubImage commands do not have the "NULL image" flag that was
introduced with glTexImage3D.  However, there is a CARD32 pad element
where that flag would be.  Removing the img_null_flag causes the flag
to be removed from the protocol.  This changes the protocol and breaks
everything.

In order to prevent needing to hand-code all of the TexSubImage
functions, a new attribute was added to the param element.  This new
attribute, called "padding," is a boolean flag that selects whether or
not the parameter is a real parameter (default / false) or is protocol
padding (true) that does not appear in the function's parameter list.

This change resulted in a number of changes to other Python scripts.
In almost all cases parameters with the is_padding flag set should not
be emitted.

This patch only changes the the XML, the DTD, and the generator
scripts.  It does NOT include the resulting changes to the generated
code.  Generated code in the X server is also changed by the script /
XML changes in this patch.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
(cherry picked from commit 0f73302d24f4201813da2939742c5bcb6964b3b1)

8 files changed, 39 insertions, 6 deletions

diff --git a/src/mesa/glapi/extension_helper.py b/src/mesa/glapi/extension_helper.py
index 375e3ea59e..64f64a2fd8 100644
--- a/src/mesa/glapi/extension_helper.py
+++ b/src/mesa/glapi/extension_helper.py
@@ -174,6 +174,9 @@ class PrintGlExtensionGlue(gl_XML.gl_print_base):
 
 				parameter_signature = ''
 				for p in f.parameterIterator():
+					if p.is_padding:
+						continue
+
 					# FIXME: This is a *really* ugly hack. :(
 
 					tn = p.type_expr.get_base_type_node()
diff --git a/src/mesa/glapi/glX_proto_recv.py b/src/mesa/glapi/glX_proto_recv.py
index 20f75575cf..78bebb2dfe 100644
--- a/src/mesa/glapi/glX_proto_recv.py
+++ b/src/mesa/glapi/glX_proto_recv.py
@@ -225,6 +225,8 @@ class PrintGlxDispatchFunctions(glX_proto_common.glx_print_proto):
 		list = []
 
 		for param in f.parameterIterator():
+			if param.is_padding:
+				continue
 
 			if param.is_counter or param.is_image() or param.is_output or param.name in f.count_parameter_list or len(param.count_parameter_list):
 				location = param.name
diff --git a/src/mesa/glapi/glX_proto_send.py b/src/mesa/glapi/glX_proto_send.py
index b00b8a1ba6..501706acc7 100644
--- a/src/mesa/glapi/glX_proto_send.py
+++ b/src/mesa/glapi/glX_proto_send.py
@@ -333,7 +333,7 @@ const GLuint __glXDefaultPixelStore[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 1 };
 					if image.img_pad_dimensions:
 						do_it = 1
 						break
-			
+
 
 				if do_it:
 					[h, n] = hash_pixel_function(func)
@@ -422,7 +422,10 @@ generic_%u_byte( GLint rop, const void * ptr )
 		else:
 			src_ptr = "&" + p.name
 
-		if not extra_offset:
+		if p.is_padding:
+			print '(void) memset((void *)(%s + %u), 0, %s);' \
+			    % (pc, p.offset + adjust, p.size_string() )
+		elif not extra_offset:
 			print '(void) memcpy((void *)(%s + %u), (void *)(%s), %s);' \
 			    % (pc, p.offset + adjust, src_ptr, p.size_string() )
 		else:
@@ -472,6 +475,10 @@ generic_%u_byte( GLint rop, const void * ptr )
 				else:
 					dim_str = str(dim)
 
+				if param.is_padding:
+					print '(void) memset((void *)(%s + %u), 0, %s);' \
+					% (pc, (param.offset - 4) + adjust, param.size_string() )
+
 				if param.img_null_flag:
 					if large:
 						print '(void) memcpy((void *)(%s + %u), zero, 4);' % (pc, (param.offset - 4) + adjust)
@@ -739,6 +746,9 @@ generic_%u_byte( GLint rop, const void * ptr )
 
 			p_string = ""
 			for param in f.parameterIterateGlxSend():
+				if param.is_padding:
+					continue
+
 				p_string += ", " + param.name
 
 				if param.is_image():
diff --git a/src/mesa/glapi/gl_API.dtd b/src/mesa/glapi/gl_API.dtd
index f89d381866..30c646c924 100644
--- a/src/mesa/glapi/gl_API.dtd
+++ b/src/mesa/glapi/gl_API.dtd
@@ -45,6 +45,7 @@
                    counter             (true | false) "false"
                    count_scale         NMTOKEN "1"
                    output              (true | false) "false"
+                   padding             (true | false) "false"
                    img_width           NMTOKEN #IMPLIED
                    img_height          NMTOKEN #IMPLIED
                    img_depth           NMTOKEN #IMPLIED
diff --git a/src/mesa/glapi/gl_API.xml b/src/mesa/glapi/gl_API.xml
index 6c0367aad7..951fd95799 100644
--- a/src/mesa/glapi/gl_API.xml
+++ b/src/mesa/glapi/gl_API.xml
@@ -3267,7 +3267,8 @@
         <param name="width" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
-        <param name="pixels" type="const GLvoid *" img_width="width" img_xoff="xoffset" img_format="format" img_type="type" img_target="target" img_null_flag="true" img_pad_dimensions="true"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
+        <param name="pixels" type="const GLvoid *" img_width="width" img_xoff="xoffset" img_format="format" img_type="type" img_target="target" img_pad_dimensions="true"/>
         <glx rop="4099" large="true"/>
     </function>
 
@@ -3280,7 +3281,8 @@
         <param name="height" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
-        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_xoff="xoffset" img_yoff="yoffset" img_format="format" img_type="type" img_target="target" img_null_flag="true" img_pad_dimensions="true"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
+        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_xoff="xoffset" img_yoff="yoffset" img_format="format" img_type="type" img_target="target" img_pad_dimensions="true"/>
         <glx rop="4100" large="true"/>
     </function>
 
@@ -3994,7 +3996,8 @@
         <param name="depth" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
-        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_depth="depth" img_xoff="xoffset" img_yoff="yoffset" img_zoff="zoffset" img_format="format" img_type="type" img_target="target" img_null_flag="true" img_pad_dimensions="true"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
+        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_depth="depth" img_xoff="xoffset" img_yoff="yoffset" img_zoff="zoffset" img_format="format" img_type="type" img_target="target" img_pad_dimensions="true"/>
         <glx rop="4115" large="true"/>
     </function>
 
@@ -8061,6 +8064,7 @@
         <param name="depth" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
         <param name="pixels" type="const GLvoid *"/>
     </function>
 </category>
@@ -8092,6 +8096,7 @@
         <param name="width" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
         <param name="pixels" type="const GLvoid *"/>
     </function>
 
@@ -8104,6 +8109,7 @@
         <param name="height" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
         <param name="pixels" type="const GLvoid *"/>
     </function>
 </category>
@@ -8627,7 +8633,8 @@
         <param name="size4d" type="GLsizei"/>
         <param name="format" type="GLenum"/>
         <param name="type" type="GLenum"/>
-        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_depth="depth" img_extent="size4d" img_xoff="xoffset" img_yoff="yoffset" img_zoff="zoffset" img_woff="woffset" img_format="format" img_type="type" img_target="target" img_null_flag="true" img_pad_dimensions="true"/>
+        <param name="UNUSED" type="GLuint" padding="true"/>
+        <param name="pixels" type="const GLvoid *" img_width="width" img_height="height" img_depth="depth" img_extent="size4d" img_xoff="xoffset" img_yoff="yoffset" img_zoff="zoffset" img_woff="woffset" img_format="format" img_type="type" img_target="target" img_pad_dimensions="true"/>
         <glx rop="2058" ignore="true"/>
     </function>
 </category>
diff --git a/src/mesa/glapi/gl_XML.py b/src/mesa/glapi/gl_XML.py
index b7a7388400..b98919134f 100644
--- a/src/mesa/glapi/gl_XML.py
+++ b/src/mesa/glapi/gl_XML.py
@@ -309,6 +309,9 @@ def create_parameter_string(parameters, include_names):
 
 	list = []
 	for p in parameters:
+		if p.is_padding:
+			continue
+
 		if include_names:
 			list.append( p.string() )
 		else:
@@ -463,6 +466,7 @@ class gl_parameter:
 		self.img_null_flag      = is_attr_true( element, 'img_null_flag' )
 		self.img_send_null      = is_attr_true( element, 'img_send_null' )
 
+		self.is_padding = is_attr_true( element, 'padding' )
 		return
 
 
diff --git a/src/mesa/glapi/gl_apitemp.py b/src/mesa/glapi/gl_apitemp.py
index 6e35571e14..a37c08d6ce 100644
--- a/src/mesa/glapi/gl_apitemp.py
+++ b/src/mesa/glapi/gl_apitemp.py
@@ -63,6 +63,9 @@ class PrintGlOffsets(gl_XML.gl_print_base):
 		n = f.static_name(name)
 
 		for p in f.parameterIterator():
+			if p.is_padding:
+				continue
+
 			if p.is_pointer():
 				cast = "(const void *) "
 			else:
diff --git a/src/mesa/glapi/gl_x86_asm.py b/src/mesa/glapi/gl_x86_asm.py
index 651cb03f14..0dbf3ebe0a 100644
--- a/src/mesa/glapi/gl_x86_asm.py
+++ b/src/mesa/glapi/gl_x86_asm.py
@@ -44,6 +44,9 @@ class PrintGenericStubs(gl_XML.gl_print_base):
 	def get_stack_size(self, f):
 		size = 0
 		for p in f.parameterIterator():
+			if p.is_padding:
+				continue
+
 			size += p.get_stack_size()
 
 		return size