#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) \
+ (((X) * (int)(MAX_UINT(DST_BITS) / MAX_UINT(SRC_BITS))) + \
+ ((DST_BITS % SRC_BITS) ? ((X) >> (SRC_BITS - DST_BITS % SRC_BITS)) : 0))
+
+static inline float
+_mesa_unorm_to_float(unsigned x, unsigned src_bits)
+{
+ return x * (1.0f / (float)MAX_UINT(src_bits));
+}
+
+static inline float
+_mesa_snorm_to_float(int x, unsigned src_bits)
+{
+ if (x <= -MAX_INT(src_bits))
+ return -1.0f;
+ else
+ return x * (1.0f / (float)MAX_INT(src_bits));
+}
+
+static inline uint16_t
+_mesa_unorm_to_half(unsigned x, unsigned src_bits)
+{
+ return _mesa_float_to_half(_mesa_unorm_to_float(x, src_bits));
+}
+
+static inline uint16_t
+_mesa_snorm_to_half(int x, unsigned src_bits)
+{
+ return _mesa_float_to_half(_mesa_snorm_to_float(x, src_bits));
+}
+
+static inline unsigned
+_mesa_float_to_unorm(float x, unsigned dst_bits)
+{
+ if (x < 0.0f)
+ return 0;
+ else if (x > 1.0f)
+ return MAX_UINT(dst_bits);
+ else
+ return _mesa_i64roundevenf(x * MAX_UINT(dst_bits));
+}
+
+static inline unsigned
+_mesa_half_to_unorm(uint16_t x, unsigned dst_bits)
+{
+ return _mesa_float_to_unorm(_mesa_half_to_float(x), dst_bits);
+}
+
+static inline unsigned
+_mesa_unorm_to_unorm(unsigned x, unsigned src_bits, unsigned dst_bits)
+{
+ if (src_bits < dst_bits) {
+ return EXTEND_NORMALIZED_INT(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
+_mesa_snorm_to_unorm(int x, unsigned src_bits, unsigned dst_bits)
+{
+ if (x < 0)
+ return 0;
+ else
+ return _mesa_unorm_to_unorm(x, src_bits - 1, dst_bits);
+}
+
+static inline int
+_mesa_float_to_snorm(float x, unsigned dst_bits)
+{
+ if (x < -1.0f)
+ return -MAX_INT(dst_bits);
+ else if (x > 1.0f)
+ return MAX_INT(dst_bits);
+ else
+ return _mesa_lroundevenf(x * MAX_INT(dst_bits));
+}
+
+static inline int
+_mesa_half_to_snorm(uint16_t x, unsigned dst_bits)
+{
+ return _mesa_float_to_snorm(_mesa_half_to_float(x), dst_bits);
+}
+
+static inline int
+_mesa_unorm_to_snorm(unsigned x, unsigned src_bits, unsigned dst_bits)
+{
+ return _mesa_unorm_to_unorm(x, src_bits, dst_bits - 1);
+}
+
+static inline int
+_mesa_snorm_to_snorm(int x, unsigned src_bits, unsigned dst_bits)
+{
+ if (x < -MAX_INT(src_bits))
+ return -MAX_INT(dst_bits);
+ else if (src_bits < dst_bits)
+ return EXTEND_NORMALIZED_INT(x, src_bits - 1, dst_bits - 1);
+ else
+ 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
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