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author | marha <marha@users.sourceforge.net> | 2015-02-22 21:39:56 +0100 |
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committer | marha <marha@users.sourceforge.net> | 2015-02-22 21:39:56 +0100 |
commit | 462f18c7b25fe3e467f837647d07ab0a78aa8d2b (patch) | |
tree | fc8013c0a1bac05a1945846c1697e973f4c35013 /mesalib/src/mesa/main/format_parser.py | |
parent | 36f711ee12b6dd5184198abed3aa551efb585587 (diff) | |
download | vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.tar.gz vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.tar.bz2 vcxsrv-462f18c7b25fe3e467f837647d07ab0a78aa8d2b.zip |
Merged origin/release (checked in because wanted to merge new stuff)
Diffstat (limited to 'mesalib/src/mesa/main/format_parser.py')
-rw-r--r-- | mesalib/src/mesa/main/format_parser.py | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/mesalib/src/mesa/main/format_parser.py b/mesalib/src/mesa/main/format_parser.py index 5e45c74de..11184f78e 100644 --- a/mesalib/src/mesa/main/format_parser.py +++ b/mesalib/src/mesa/main/format_parser.py @@ -24,6 +24,8 @@ # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +import sys + VOID = 'x' UNSIGNED = 'u' SIGNED = 's' @@ -102,6 +104,10 @@ class Channel: """Returns true if the size of this channel is a power of two.""" return is_power_of_two(self.size) + def datatype(self): + """Returns the datatype corresponding to a channel type and size""" + return _get_datatype(self.type, self.size) + class Swizzle: """Describes a swizzle operation. @@ -469,6 +475,49 @@ class Format: return channel return None + def datatype(self): + """Returns the datatype corresponding to a format's channel type and size""" + if self.layout == PACKED: + if self.block_size() == 8: + return 'uint8_t' + if self.block_size() == 16: + return 'uint16_t' + if self.block_size() == 32: + return 'uint32_t' + else: + assert False + else: + return _get_datatype(self.channel_type(), self.channel_size()) + +def _get_datatype(type, size): + if type == FLOAT: + if size == 32: + return 'float' + elif size == 16: + return 'uint16_t' + else: + assert False + elif type == UNSIGNED: + if size <= 8: + return 'uint8_t' + elif size <= 16: + return 'uint16_t' + elif size <= 32: + return 'uint32_t' + else: + assert False + elif type == SIGNED: + if size <= 8: + return 'int8_t' + elif size <= 16: + return 'int16_t' + elif size <= 32: + return 'int32_t' + else: + assert False + else: + assert False + def _parse_channels(fields, layout, colorspace, swizzle): channels = [] for field in fields: @@ -515,7 +564,10 @@ def parse(filename): block_height = int(fields[3]) colorspace = fields[9] - swizzle = Swizzle(fields[8]) + try: + swizzle = Swizzle(fields[8]) + except: + sys.exit("error parsing swizzle for format " + name) channels = _parse_channels(fields[4:8], layout, colorspace, swizzle) yield Format(name, layout, block_width, block_height, channels, swizzle, colorspace) |