util: Split the pack/unpack functions out of the format desc.
[mesa.git] / src / util / format / u_format_table.py
index b517788932d562e1c7f13bd87f0fe0d0c88609d3..bb89d56a42db10ce48156e43bb544a8009763b55 100644 (file)
@@ -124,6 +124,25 @@ def write_format_table(formats):
             print("      %s%s\t/* %s */" % (swizzle_map[swizzle], sep, comment))
         print("   },")
 
+    def generate_table_getter(type):
+        print("const struct util_format_%sdescription *" % type)
+        print("util_format_%sdescription(enum pipe_format format)" % type)
+        print("{")
+        print("   if (format >= PIPE_FORMAT_COUNT) {")
+        print("      return NULL;")
+        print("   }")
+        print()
+        print("   switch (format) {")
+        for format in formats:
+            print("   case %s:" % format.name)
+            print("      return &util_format_%s_%sdescription;" % (format.short_name(), type))
+        print("   default:")
+        print("      return NULL;")
+        print("   }")
+        print("}")
+        print()
+
+
     for format in formats:
         sn = format.short_name()
 
@@ -143,60 +162,87 @@ def write_format_table(formats):
         u_format_pack.print_channels(format, do_channel_array)
         u_format_pack.print_channels(format, do_swizzle_array)
         print("   %s," % (colorspace_map(format.colorspace),))
-        access = True
+        print("};")
+        print()
+
+        # We don't generate code for YUV formats, and many of the new ones lack pack/unpack
+        # functions for softpipe/llvmpipe.
+        noaccess_formats = [
+            'yv12',
+            'yv16',
+            'iyuv',
+            'nv12',
+            'nv16',
+            'nv21',
+            'p010',
+            'p012',
+            'p016',
+            'xyuv',
+            'ayuv',
+            'r8g8_r8b8_unorm',
+            'g8r8_b8r8_unorm',
+            'g8r8_g8b8_unorm',
+            'y8_u8_v8_422_unorm',
+            'y8_u8v8_422_unorm',
+            'y8_u8_v8_444_unorm',
+            'y16_u16_v16_420_unorm',
+            'y16_u16_v16_422_unorm',
+            'y16_u16v16_422_unorm',
+            'y16_u16_v16_444_unorm',
+        ]
+        access = sn not in noaccess_formats
         if format.layout in ('astc', 'atc', 'fxt1'):
             access = False
         if format.layout == 'etc' and sn != 'etc1_rgb8':
             access = False
+
+        print('const struct util_format_pack_description')
+        print('util_format_%s_pack_description = {' % sn)
         if format.colorspace != ZS and not format.is_pure_color() and access:
-            print("   .unpack_rgba_8unorm = &util_format_%s_unpack_rgba_8unorm," % sn)
             print("   .pack_rgba_8unorm = &util_format_%s_pack_rgba_8unorm," % sn)
+            print("   .pack_rgba_float = &util_format_%s_pack_rgba_float," % sn)
+
+        if format.has_depth():
+            print("   .pack_z_32unorm = &util_format_%s_pack_z_32unorm," % sn)
+            print("   .pack_z_float = &util_format_%s_pack_z_float," % sn)
+
+        if format.has_stencil():
+            print("   .pack_s_8uint = &util_format_%s_pack_s_8uint," % sn)
+
+        if format.is_pure_unsigned() or format.is_pure_signed():
+            print("   .pack_rgba_uint = &util_format_%s_pack_unsigned," % sn)
+            print("   .pack_rgba_sint = &util_format_%s_pack_signed," % sn)
+        print("};")
+        print()
+
+        print('const struct util_format_unpack_description')
+        print('util_format_%s_unpack_description = {' % sn)
+        if format.colorspace != ZS and not format.is_pure_color() and access:
+            print("   .unpack_rgba_8unorm = &util_format_%s_unpack_rgba_8unorm," % sn)
             if format.layout == 's3tc' or format.layout == 'rgtc':
                 print("   .fetch_rgba_8unorm = &util_format_%s_fetch_rgba_8unorm," % sn)
-            print("   .unpack_rgba_float = &util_format_%s_unpack_rgba_float," % sn)
-            print("   .pack_rgba_float = &util_format_%s_pack_rgba_float," % sn)
+            print("   .unpack_rgba = &util_format_%s_unpack_rgba_float," % sn)
             print("   .fetch_rgba_float = &util_format_%s_fetch_rgba_float," % sn)
 
         if format.has_depth():
             print("   .unpack_z_32unorm = &util_format_%s_unpack_z_32unorm," % sn)
-            print("   .pack_z_32unorm = &util_format_%s_pack_z_32unorm," % sn)
             print("   .unpack_z_float = &util_format_%s_unpack_z_float," % sn)
-            print("   .pack_z_float = &util_format_%s_pack_z_float," % sn)
 
         if format.has_stencil():
             print("   .unpack_s_8uint = &util_format_%s_unpack_s_8uint," % sn)
-            print("   .pack_s_8uint = &util_format_%s_pack_s_8uint," % sn)
 
         if format.is_pure_unsigned():
-            print("   .unpack_rgba_uint = &util_format_%s_unpack_unsigned," % sn)
-            print("   .pack_rgba_uint = &util_format_%s_pack_unsigned," % sn)
-            print("   .pack_rgba_sint = &util_format_%s_pack_signed," % sn)
+            print("   .unpack_rgba = &util_format_%s_unpack_unsigned," % sn)
             print("   .fetch_rgba_uint = &util_format_%s_fetch_unsigned," % sn)
         elif format.is_pure_signed():
-            print("   .pack_rgba_uint = &util_format_%s_pack_unsigned," % sn)
-            print("   .unpack_rgba_sint = &util_format_%s_unpack_signed," % sn)
-            print("   .pack_rgba_sint = &util_format_%s_pack_signed," % sn)
+            print("   .unpack_rgba = &util_format_%s_unpack_signed," % sn)
             print("   .fetch_rgba_sint = &util_format_%s_fetch_signed," % sn)
         print("};")
         print()
-        
-    print("const struct util_format_description *")
-    print("util_format_description(enum pipe_format format)")
-    print("{")
-    print("   if (format >= PIPE_FORMAT_COUNT) {")
-    print("      return NULL;")
-    print("   }")
-    print()
-    print("   switch (format) {")
-    for format in formats:
-        print("   case %s:" % format.name)
-        print("      return &util_format_%s_description;" % (format.short_name(),))
-    print("   default:")
-    print("      return NULL;")
-    print("   }")
-    print("}")
-    print()
 
+    generate_table_getter("")
+    generate_table_getter("pack_")
+    generate_table_getter("unpack_")
 
 def main():