X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fcore%2Fdatatype.h;h=22c72f6a3d8ea0c67c8b6c1ab6921082fdbb2e8d;hb=190a7e11237351f6b730c28f7b16f183e8adc69c;hp=c7ee2841bded09cd4e23e5c1414c6695db25dc67;hpb=70d9d2d28e5fe723c6b46894276e4c935f578e2d;p=libs%2Fgl.git

diff --git a/source/core/datatype.h b/source/core/datatype.h
index c7ee2841..22c72f6a 100644
--- a/source/core/datatype.h
+++ b/source/core/datatype.h
@@ -1,15 +1,18 @@
 #ifndef MSP_GL_DATATYPE_H_
 #define MSP_GL_DATATYPE_H_
 
-#include "gl.h"
+#include <msp/linal/matrix.h>
+#include <msp/linal/vector.h>
 
 namespace Msp {
 namespace GL {
 
 /**
-Identifies a data type.  The values are bitfields laid as follows:
+Identifies a data type.
 
-__ds addd ccrr _bfg ssss ssss
+The values are bitfields laid as follows:
+
+__hm addd ccrr _bfg ssss ssss
   ││ │  │  │ │  │││         └╴Size (bytes)
   ││ │  │  │ │  ││└──────────╴Signed flag
   ││ │  │  │ │  │└───────────╴Floating-point flag
@@ -22,7 +25,7 @@ __ds addd ccrr _bfg ssss ssss
   └──────────────────────────╴Shadow sampler flag
 
 This information is presented for internal documentation purposes only; it is
-inadvisable for programs to rely on it.
+inadvisable for applications to rely on it.
 */
 enum DataType
 {
@@ -90,16 +93,52 @@ enum DataType
 	SAMPLER_CUBE_ARRAY_SHADOW = 0x3C0304
 };
 
-inline unsigned get_type_size(DataType t) { return t&0xFF; }
+inline std::size_t get_type_size(DataType t) { return t&0xFF; }
+inline bool is_float(DataType t) { return t&0x200; }
 inline bool is_matrix(DataType t) { return t&0xC000; }
 inline bool is_vector(DataType t) { return !is_matrix(t) && (t&0x3000); }
+inline bool is_image(DataType t) { return t&0x70000; }
+
+inline DataType get_matrix_column_type(DataType t)
+{
+	unsigned cols = ((t&0xC000)>>14)+1;
+	return static_cast<DataType>((t&~0xC0FF) | (get_type_size(t)/cols));
+}
+
+inline DataType get_element_type(DataType t)
+{
+	unsigned elems = (((t&0xC000)>>14)+1)*(((t&0x3000)>>12)+1);
+	return static_cast<DataType>((t&~0xC0FF) | (get_type_size(t)/elems));
+}
+
+template<typename T> struct TypeTraits;
+template<> struct TypeTraits<bool> { static const DataType type = BOOL; };
+template<> struct TypeTraits<char> { static const DataType type = BYTE; };
+template<> struct TypeTraits<unsigned char> { static const DataType type = UNSIGNED_BYTE; };
+template<> struct TypeTraits<short> { static const DataType type = SHORT; };
+template<> struct TypeTraits<unsigned short> { static const DataType type = UNSIGNED_SHORT; };
+template<> struct TypeTraits<int> { static const DataType type = INT; };
+template<> struct TypeTraits<unsigned> { static const DataType type = UNSIGNED_INT; };
+template<> struct TypeTraits<float> { static const DataType type = FLOAT; };
+template<> struct TypeTraits<double> { static const DataType type = DOUBLE; };
 
-GLenum get_gl_type(DataType);
-DataType from_gl_type(GLenum);
+template<typename T, unsigned N>
+struct TypeTraits<LinAl::Vector<T, N>>
+{
+	static const DataType type = static_cast<DataType>((TypeTraits<T>::type&0xF00) | ((TypeTraits<T>::type&0xFF)*N) | ((N-1)<<12));
+};
+
+template<typename T, unsigned N, unsigned M>
+struct TypeTraits<LinAl::Matrix<T, N, M>>
+{
+	static const DataType type = static_cast<DataType>((TypeTraits<T>::type&0xF00) | ((TypeTraits<T>::type&0xFF)*N*M) | ((N-1)<<12) | ((M-1)<<14));
+};
 
 void require_type(DataType);
 
 } // namespace GL
 } // namespace Msp
 
+#include "datatype_backend.h"
+
 #endif