#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:
+
+__hm addd ccrr _bfg ssss ssss
+ ││ │ │ │ │ │││ └╴Size (bytes)
+ ││ │ │ │ │ ││└──────────╴Signed flag
+ ││ │ │ │ │ │└───────────╴Floating-point flag
+ ││ │ │ │ │ └────────────╴Boolean flag
+ ││ │ │ │ └───────────────╴Vector or matrix rows minus one
+ ││ │ │ └─────────────────╴Matrix columns minus one
+ ││ │ └────────────────────╴Image dimensions (4 = cube)
+ ││ └───────────────────────╴Image array flag
+ │└─────────────────────────╴Sampled image flag
+ └──────────────────────────╴Shadow sampler flag
+
+This information is presented for internal documentation purposes only; it is
+inadvisable for applications to rely on it.
+*/
enum DataType
{
+ VOID = 0,
+ BOOL = 0x401,
BYTE = 0x101,
UNSIGNED_BYTE = 0x001,
SHORT = 0x102,
INT = 0x104,
UNSIGNED_INT = 0x004,
FLOAT = 0x304,
- HALF_FLOAT = 0x302
+ HALF_FLOAT = 0x302,
+ DOUBLE = 0x308,
+
+ FLOAT_VEC2 = 0x1308,
+ FLOAT_VEC3 = 0x230C,
+ FLOAT_VEC4 = 0x3310,
+ INT_VEC2 = 0x1108,
+ INT_VEC3 = 0x210C,
+ INT_VEC4 = 0x3110,
+ UINT_VEC2 = 0x1008,
+ UINT_VEC3 = 0x200C,
+ UINT_VEC4 = 0x3010,
+ BOOL_VEC2 = 0x1402,
+ BOOL_VEC3 = 0x2403,
+ BOOL_VEC4 = 0x3404,
+
+ FLOAT_MAT2 = 0x5310,
+ FLOAT_MAT3 = 0xA324,
+ FLOAT_MAT4 = 0xF340,
+ FLOAT_MAT2x3 = 0x6318,
+ FLOAT_MAT3x2 = 0x9318,
+ FLOAT_MAT2x4 = 0x7320,
+ FLOAT_MAT4x2 = 0xD320,
+ FLOAT_MAT3x4 = 0xB330,
+ FLOAT_MAT4x3 = 0xE330,
+
+ DOUBLE_MAT2 = 0x5320,
+ DOUBLE_MAT3 = 0xA348,
+ DOUBLE_MAT4 = 0xF380,
+ DOUBLE_MAT2x3 = 0x6330,
+ DOUBLE_MAT3x2 = 0x7330,
+ DOUBLE_MAT2x4 = 0x7340,
+ DOUBLE_MAT4x2 = 0xD340,
+ DOUBLE_MAT3x4 = 0xB360,
+ DOUBLE_MAT4x3 = 0xE360,
+
+ IMAGE_1D = 0x10304,
+ IMAGE_2D = 0x20304,
+ IMAGE_3D = 0x30304,
+ IMAGE_CUBE = 0x40304,
+ IMAGE_1D_ARRAY = 0x90304,
+ IMAGE_2D_ARRAY = 0xA0304,
+ IMAGE_CUBE_ARRAY = 0xC0304,
+ SAMPLER_1D = 0x110304,
+ SAMPLER_2D = 0x120304,
+ SAMPLER_3D = 0x130304,
+ SAMPLER_CUBE = 0x140304,
+ SAMPLER_1D_ARRAY = 0x190304,
+ SAMPLER_2D_ARRAY = 0x1A0304,
+ SAMPLER_CUBE_ARRAY = 0x1C0304,
+ SAMPLER_1D_SHADOW = 0x310304,
+ SAMPLER_2D_SHADOW = 0x320304,
+ SAMPLER_CUBE_SHADOW = 0x340304,
+ SAMPLER_1D_ARRAY_SHADOW = 0x390304,
+ SAMPLER_2D_ARRAY_SHADOW = 0x3A0304,
+ 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; }
-GLenum get_gl_type(DataType);
+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; };
+
+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