Add support for integer vertex attributes

[libs/gl.git] / source / core / vertexformat.h

diff --git a/source/core/vertexformat.h b/source/core/vertexformat.h
index a503aff83f84f19bcbbb1d9e3009c77fd526d4bb..132d0b95a88a0b36411b70a55ade9a48c5c19c15 100644 (file)
--- a/source/core/vertexformat.h
+++ b/source/core/vertexformat.h
@@ -20,8 +20,9 @@ are doing.
 
 The values are bitfields laid as follows:
 
-nnnn nn_f gsss _ccc
-      │ │ │  │    └╴Number of components
+nnnn nn_f gsss iccc
+      │ │ │  │ │  └╴Number of components
+      │ │ │  │ └───╴Integer attribute flag
       │ │ │  └─────╴Size of one component
       │ │ └────────╴Signed flag
       │ └──────────╴Floating-point flag
@@ -55,10 +56,18 @@ enum VertexAttribute
        GENERIC2 = 0x29C2,
        GENERIC3 = 0x29C3,
        GENERIC4 = 0x29C4,
+       GENERIC_I1 = 0x28C9,
+       GENERIC_I2 = 0x28CA,
+       GENERIC_I3 = 0x28CB,
+       GENERIC_I4 = 0x28CC,
        RAW_ATTRIB1 = 0xFDC1,
        RAW_ATTRIB2 = 0xFDC2,
        RAW_ATTRIB3 = 0xFDC3,
-       RAW_ATTRIB4 = 0xFDC4
+       RAW_ATTRIB4 = 0xFDC4,
+       RAW_ATTRIB_I1 = 0xFCC9,
+       RAW_ATTRIB_I2 = 0xFCCA,
+       RAW_ATTRIB_I3 = 0xFCCB,
+       RAW_ATTRIB_I4 = 0xFCCC
 };
 
 class VertexFormat
@@ -111,6 +120,9 @@ inline unsigned get_attribute_component_count(UInt16 a)
 inline unsigned get_attribute_size(UInt16 a)
 { return get_attribute_component_count(a)*get_type_size(get_attribute_source_type(a)); }
 
+inline bool is_integer_attribute(UInt16 a)
+{ return a&8; }
+
 void operator>>(const LexicalConverter &, VertexAttribute &);
 
 } // namespace GL