#include "imports.h"
#include "macros.h"
-extern const mesa_array_format RGBA8888_FLOAT;
-extern const mesa_array_format RGBA8888_UBYTE;
-extern const mesa_array_format RGBA8888_UINT;
-extern const mesa_array_format RGBA8888_INT;
+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))
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 {
+ 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);
+ }
+ }
}
static inline unsigned
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,