diff options
Diffstat (limited to 'src/gallium/auxiliary/util')
| -rw-r--r-- | src/gallium/auxiliary/util/u_pack_color.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_pack_color.h b/src/gallium/auxiliary/util/u_pack_color.h index 39e4ae9d071..43cb7e56ecb 100644 --- a/src/gallium/auxiliary/util/u_pack_color.h +++ b/src/gallium/auxiliary/util/u_pack_color.h @@ -142,6 +142,161 @@ util_pack_color_ub(ubyte r, ubyte g, ubyte b, ubyte a, /** + * Unpack RGBA from a packed pixel, returning values as ubytes in [0,255]. + */ +static INLINE void +util_unpack_color_ub(enum pipe_format format, const void *src, + ubyte *r, ubyte *g, ubyte *b, ubyte *a) +{ + switch (format) { + case PIPE_FORMAT_R8G8B8A8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 24) & 0xff); + *g = (ubyte) ((p >> 16) & 0xff); + *b = (ubyte) ((p >> 8) & 0xff); + *a = (ubyte) ((p >> 0) & 0xff); + } + return; + case PIPE_FORMAT_R8G8B8X8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 24) & 0xff); + *g = (ubyte) ((p >> 16) & 0xff); + *b = (ubyte) ((p >> 8) & 0xff); + *a = (ubyte) 0xff; + } + return; + case PIPE_FORMAT_A8R8G8B8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 16) & 0xff); + *g = (ubyte) ((p >> 8) & 0xff); + *b = (ubyte) ((p >> 0) & 0xff); + *a = (ubyte) ((p >> 24) & 0xff); + } + return; + case PIPE_FORMAT_X8R8G8B8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 16) & 0xff); + *g = (ubyte) ((p >> 8) & 0xff); + *b = (ubyte) ((p >> 0) & 0xff); + *a = (ubyte) 0xff; + } + return; + case PIPE_FORMAT_B8G8R8A8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 8) & 0xff); + *g = (ubyte) ((p >> 16) & 0xff); + *b = (ubyte) ((p >> 24) & 0xff); + *a = (ubyte) ((p >> 0) & 0xff); + } + return; + case PIPE_FORMAT_B8G8R8X8_UNORM: + { + uint p = ((const uint *) src)[0]; + *r = (ubyte) ((p >> 8) & 0xff); + *g = (ubyte) ((p >> 16) & 0xff); + *b = (ubyte) ((p >> 24) & 0xff); + *a = (ubyte) 0xff; + } + return; + case PIPE_FORMAT_R5G6B5_UNORM: + { + ushort p = ((const ushort *) src)[0]; + *r = (ubyte) (((p >> 8) & 0xf8) | ((p >> 13) & 0x7)); + *g = (ubyte) (((p >> 3) & 0xfc) | ((p >> 9) & 0x3)); + *b = (ubyte) (((p << 3) & 0xf8) | ((p >> 2) & 0x7)); + *a = (ubyte) 0xff; + } + return; + case PIPE_FORMAT_A1R5G5B5_UNORM: + { + ushort p = ((const ushort *) src)[0]; + *r = (ubyte) (((p >> 7) & 0xf8) | ((p >> 12) & 0x7)); + *g = (ubyte) (((p >> 2) & 0xf8) | ((p >> 7) & 0x7)); + *b = (ubyte) (((p << 3) & 0xf8) | ((p >> 2) & 0x7)); + *a = (ubyte) (0xff * (p >> 15)); + } + return; + case PIPE_FORMAT_A4R4G4B4_UNORM: + { + ushort p = ((const ushort *) src)[0]; + *r = (ubyte) (((p >> 4) & 0xf0) | ((p >> 8) & 0xf)); + *g = (ubyte) (((p >> 0) & 0xf0) | ((p >> 4) & 0xf)); + *b = (ubyte) (((p << 4) & 0xf0) | ((p >> 0) & 0xf)); + *a = (ubyte) (((p >> 8) & 0xf0) | ((p >> 12) & 0xf)); + } + return; + case PIPE_FORMAT_A8_UNORM: + { + ubyte p = ((const ubyte *) src)[0]; + *r = *g = *b = (ubyte) 0xff; + *a = p; + } + return; + case PIPE_FORMAT_L8_UNORM: + { + ubyte p = ((const ubyte *) src)[0]; + *r = *g = *b = p; + *a = (ubyte) 0xff; + } + return; + case PIPE_FORMAT_I8_UNORM: + { + ubyte p = ((const ubyte *) src)[0]; + *r = *g = *b = *a = p; + } + return; + case PIPE_FORMAT_R32G32B32A32_FLOAT: + { + const float *p = (const float *) src; + *r = float_to_ubyte(p[0]); + *g = float_to_ubyte(p[1]); + *b = float_to_ubyte(p[2]); + *a = float_to_ubyte(p[3]); + } + return; + case PIPE_FORMAT_R32G32B32_FLOAT: + { + const float *p = (const float *) src; + *r = float_to_ubyte(p[0]); + *g = float_to_ubyte(p[1]); + *b = float_to_ubyte(p[2]); + *a = (ubyte) 0xff; + } + return; + + case PIPE_FORMAT_R32G32_FLOAT: + { + const float *p = (const float *) src; + *r = float_to_ubyte(p[0]); + *g = float_to_ubyte(p[1]); + *b = *a = (ubyte) 0xff; + } + return; + + case PIPE_FORMAT_R32_FLOAT: + { + const float *p = (const float *) src; + *r = float_to_ubyte(p[0]); + *g = *b = *a = (ubyte) 0xff; + } + return; + + /* XXX lots more cases to add */ + default: + debug_print_format("gallium: unhandled format in util_unpack_color_ub()", + format); + assert(0); + } +} + + + +/** * Note rgba outside [0,1] will be clamped for int pixel formats. */ static INLINE void @@ -157,6 +312,8 @@ util_pack_color(const float rgba[4], enum pipe_format format, void *dest) a = float_to_ubyte(rgba[3]); } + printf("%s %s\n", __FUNCTION__, pf_name(format)); + switch (format) { case PIPE_FORMAT_R8G8B8A8_UNORM: { |