#ifndef FORMAT_UTILS_H
#define FORMAT_UTILS_H
+#include "formats.h"
#include "imports.h"
+#include "macros.h"
+#include "util/rounding.h"
+#include "util/half_float.h"
+
+extern const mesa_array_format RGBA32_FLOAT;
+extern const mesa_array_format RGBA8_UBYTE;
+extern const mesa_array_format RGBA32_UINT;
+extern const mesa_array_format RGBA32_INT;
/* Only guaranteed to work for BITS <= 32 */
#define MAX_UINT(BITS) ((BITS) == 32 ? UINT32_MAX : ((1u << (BITS)) - 1))
#define MAX_INT(BITS) ((int)MAX_UINT((BITS) - 1))
+#define MIN_INT(BITS) ((BITS) == 32 ? INT32_MIN : (-(1 << (BITS - 1))))
/* Extends an integer of size SRC_BITS to one of size DST_BITS linearly */
#define EXTEND_NORMALIZED_INT(X, SRC_BITS, DST_BITS) \
else if (x > 1.0f)
return MAX_UINT(dst_bits);
else
- return F_TO_I(x * MAX_UINT(dst_bits));
+ return _mesa_lroundevenf(x * MAX_UINT(dst_bits));
}
static inline unsigned
static inline unsigned
_mesa_unorm_to_unorm(unsigned x, unsigned src_bits, unsigned dst_bits)
{
- if (src_bits < dst_bits)
+ if (src_bits < dst_bits) {
return EXTEND_NORMALIZED_INT(x, src_bits, dst_bits);
- else
- return x >> (src_bits - dst_bits);
+ } else if (src_bits > dst_bits) {
+ unsigned src_half = (1 << (src_bits - 1)) - 1;
+
+ if (src_bits + dst_bits > sizeof(x) * 8) {
+ assert(src_bits + dst_bits <= sizeof(uint64_t) * 8);
+ return (((uint64_t) x * MAX_UINT(dst_bits) + src_half) /
+ MAX_UINT(src_bits));
+ } else {
+ return (x * MAX_UINT(dst_bits) + src_half) / MAX_UINT(src_bits);
+ }
+ } else {
+ return x;
+ }
}
static inline unsigned
else if (x > 1.0f)
return MAX_INT(dst_bits);
else
- return F_TO_I(x * MAX_INT(dst_bits));
+ return _mesa_lroundevenf(x * MAX_INT(dst_bits));
}
static inline int
return x >> (src_bits - dst_bits);
}
+static inline unsigned
+_mesa_unsigned_to_unsigned(unsigned src, unsigned dst_size)
+{
+ return MIN2(src, MAX_UINT(dst_size));
+}
+
+static inline int
+_mesa_unsigned_to_signed(unsigned src, unsigned dst_size)
+{
+ return MIN2(src, (unsigned)MAX_INT(dst_size));
+}
+
+static inline int
+_mesa_signed_to_signed(int src, unsigned dst_size)
+{
+ return CLAMP(src, MIN_INT(dst_size), MAX_INT(dst_size));
+}
+
+static inline unsigned
+_mesa_signed_to_unsigned(int src, unsigned dst_size)
+{
+ return CLAMP(src, 0, MAX_UINT(dst_size));
+}
+
+static inline unsigned
+_mesa_float_to_unsigned(float src, unsigned dst_bits)
+{
+ if (src < 0.0f)
+ return 0;
+ if (src > (float)MAX_UINT(dst_bits))
+ return MAX_UINT(dst_bits);
+ return _mesa_signed_to_unsigned(src, dst_bits);
+}
+
+static inline unsigned
+_mesa_float_to_signed(float src, unsigned dst_bits)
+{
+ if (src < (float)(-MAX_INT(dst_bits)))
+ return -MAX_INT(dst_bits);
+ if (src > (float)MAX_INT(dst_bits))
+ return MAX_INT(dst_bits);
+ return _mesa_signed_to_signed(src, dst_bits);
+}
+
+static inline unsigned
+_mesa_half_to_unsigned(uint16_t src, unsigned dst_bits)
+{
+ if (_mesa_half_is_negative(src))
+ return 0;
+ return _mesa_unsigned_to_unsigned(_mesa_float_to_half(src), dst_bits);
+}
+
+static inline unsigned
+_mesa_half_to_signed(uint16_t src, unsigned dst_bits)
+{
+ return _mesa_float_to_signed(_mesa_half_to_float(src), dst_bits);
+}
+
bool
_mesa_format_to_array(mesa_format, GLenum *type, int *num_components,
uint8_t swizzle[4], bool *normalized);
void
-_mesa_swizzle_and_convert(void *dst, GLenum dst_type, int num_dst_channels,
- const void *src, GLenum src_type, int num_src_channels,
+_mesa_swizzle_and_convert(void *dst,
+ enum mesa_array_format_datatype dst_type,
+ int num_dst_channels,
+ const void *src,
+ enum mesa_array_format_datatype src_type,
+ int num_src_channels,
const uint8_t swizzle[4], bool normalized, int count);
+bool
+_mesa_compute_rgba2base2rgba_component_mapping(GLenum baseFormat, uint8_t *map);
+
+void
+_mesa_format_convert(void *void_dst, uint32_t dst_format, size_t dst_stride,
+ void *void_src, uint32_t src_format, size_t src_stride,
+ size_t width, size_t height, uint8_t *rebase_swizzle);
+
#endif