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Diffstat (limited to 'src/gallium/auxiliary/util/u_pack_color.h')
-rw-r--r-- | src/gallium/auxiliary/util/u_pack_color.h | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_pack_color.h b/src/gallium/auxiliary/util/u_pack_color.h new file mode 100644 index 0000000000..e0e8aa8e9f --- /dev/null +++ b/src/gallium/auxiliary/util/u_pack_color.h @@ -0,0 +1,472 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * @file + * Functions to produce packed colors/Z from floats. + */ + + +#ifndef U_PACK_COLOR_H +#define U_PACK_COLOR_H + + +#include "pipe/p_compiler.h" +#include "pipe/p_format.h" +#include "util/u_math.h" + + +/** + * Pack ubyte R,G,B,A into dest pixel. + */ +static INLINE void +util_pack_color_ub(ubyte r, ubyte g, ubyte b, ubyte a, + enum pipe_format format, void *dest) +{ + switch (format) { + case PIPE_FORMAT_R8G8B8A8_UNORM: + { + uint *d = (uint *) dest; + *d = (r << 24) | (g << 16) | (b << 8) | a; + } + return; + case PIPE_FORMAT_R8G8B8X8_UNORM: + { + uint *d = (uint *) dest; + *d = (r << 24) | (g << 16) | (b << 8) | 0xff; + } + return; + case PIPE_FORMAT_A8R8G8B8_UNORM: + { + uint *d = (uint *) dest; + *d = (a << 24) | (r << 16) | (g << 8) | b; + } + return; + case PIPE_FORMAT_X8R8G8B8_UNORM: + { + uint *d = (uint *) dest; + *d = (0xff << 24) | (r << 16) | (g << 8) | b; + } + return; + case PIPE_FORMAT_B8G8R8A8_UNORM: + { + uint *d = (uint *) dest; + *d = (b << 24) | (g << 16) | (r << 8) | a; + } + return; + case PIPE_FORMAT_B8G8R8X8_UNORM: + { + uint *d = (uint *) dest; + *d = (b << 24) | (g << 16) | (r << 8) | 0xff; + } + return; + case PIPE_FORMAT_R5G6B5_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3); + } + return; + case PIPE_FORMAT_A1R5G5B5_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((a & 0x80) << 8) | ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | (b >> 3); + } + return; + case PIPE_FORMAT_A4R4G4B4_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((a & 0xf0) << 8) | ((r & 0xf0) << 4) | ((g & 0xf0) << 0) | (b >> 4); + } + return; + case PIPE_FORMAT_A8_UNORM: + { + ubyte *d = (ubyte *) dest; + *d = a; + } + return; + case PIPE_FORMAT_L8_UNORM: + case PIPE_FORMAT_I8_UNORM: + { + ubyte *d = (ubyte *) dest; + *d = r; + } + return; + case PIPE_FORMAT_R32G32B32A32_FLOAT: + { + float *d = (float *) dest; + d[0] = (float)r / 255.0f; + d[1] = (float)g / 255.0f; + d[2] = (float)b / 255.0f; + d[3] = (float)a / 255.0f; + } + return; + case PIPE_FORMAT_R32G32B32_FLOAT: + { + float *d = (float *) dest; + d[0] = (float)r / 255.0f; + d[1] = (float)g / 255.0f; + d[2] = (float)b / 255.0f; + } + return; + + /* XXX lots more cases to add */ + default: + debug_print_format("gallium: unhandled format in util_pack_color_ub()", format); + assert(0); + } +} + + +/** + * 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 +util_pack_color(const float rgba[4], enum pipe_format format, void *dest) +{ + ubyte r, g, b, a; + + if (pf_size_x(format) <= 8) { + /* format uses 8-bit components or less */ + r = float_to_ubyte(rgba[0]); + g = float_to_ubyte(rgba[1]); + b = float_to_ubyte(rgba[2]); + a = float_to_ubyte(rgba[3]); + } + + switch (format) { + case PIPE_FORMAT_R8G8B8A8_UNORM: + { + uint *d = (uint *) dest; + *d = (r << 24) | (g << 16) | (b << 8) | a; + } + return; + case PIPE_FORMAT_R8G8B8X8_UNORM: + { + uint *d = (uint *) dest; + *d = (r << 24) | (g << 16) | (b << 8) | 0xff; + } + return; + case PIPE_FORMAT_A8R8G8B8_UNORM: + { + uint *d = (uint *) dest; + *d = (a << 24) | (r << 16) | (g << 8) | b; + } + return; + case PIPE_FORMAT_X8R8G8B8_UNORM: + { + uint *d = (uint *) dest; + *d = (0xff << 24) | (r << 16) | (g << 8) | b; + } + return; + case PIPE_FORMAT_B8G8R8A8_UNORM: + { + uint *d = (uint *) dest; + *d = (b << 24) | (g << 16) | (r << 8) | a; + } + return; + case PIPE_FORMAT_B8G8R8X8_UNORM: + { + uint *d = (uint *) dest; + *d = (b << 24) | (g << 16) | (r << 8) | 0xff; + } + return; + case PIPE_FORMAT_R5G6B5_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((r & 0xf8) << 8) | ((g & 0xfc) << 3) | (b >> 3); + } + return; + case PIPE_FORMAT_A1R5G5B5_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((a & 0x80) << 8) | ((r & 0xf8) << 7) | ((g & 0xf8) << 2) | (b >> 3); + } + return; + case PIPE_FORMAT_A4R4G4B4_UNORM: + { + ushort *d = (ushort *) dest; + *d = ((a & 0xf0) << 8) | ((r & 0xf0) << 4) | ((g & 0xf0) << 0) | (b >> 4); + } + return; + case PIPE_FORMAT_A8_UNORM: + { + ubyte *d = (ubyte *) dest; + *d = a; + } + return; + case PIPE_FORMAT_L8_UNORM: + case PIPE_FORMAT_I8_UNORM: + { + ubyte *d = (ubyte *) dest; + *d = r; + } + return; + case PIPE_FORMAT_R32G32B32A32_FLOAT: + { + float *d = (float *) dest; + d[0] = rgba[0]; + d[1] = rgba[1]; + d[2] = rgba[2]; + d[3] = rgba[3]; + } + return; + case PIPE_FORMAT_R32G32B32_FLOAT: + { + float *d = (float *) dest; + d[0] = rgba[0]; + d[1] = rgba[1]; + d[2] = rgba[2]; + } + return; + /* XXX lots more cases to add */ + default: + debug_print_format("gallium: unhandled format in util_pack_color()", format); + assert(0); + } +} + + +/** + * Note: it's assumed that z is in [0,1] + */ +static INLINE uint +util_pack_z(enum pipe_format format, double z) +{ + if (z == 0.0) + return 0; + + switch (format) { + case PIPE_FORMAT_Z16_UNORM: + if (z == 1.0) + return 0xffff; + return (uint) (z * 0xffff); + case PIPE_FORMAT_Z32_UNORM: + /* special-case to avoid overflow */ + if (z == 1.0) + return 0xffffffff; + return (uint) (z * 0xffffffff); + case PIPE_FORMAT_S8Z24_UNORM: + case PIPE_FORMAT_X8Z24_UNORM: + if (z == 1.0) + return 0xffffff; + return (uint) (z * 0xffffff); + case PIPE_FORMAT_Z24S8_UNORM: + case PIPE_FORMAT_Z24X8_UNORM: + if (z == 1.0) + return 0xffffff00; + return ((uint) (z * 0xffffff)) << 8; + default: + debug_print_format("gallium: unhandled format in util_pack_z()", format); + assert(0); + return 0; + } +} + + +/** + * Pack 4 ubytes into a 4-byte word + */ +static INLINE unsigned +pack_ub4(ubyte b0, ubyte b1, ubyte b2, ubyte b3) +{ + return ((((unsigned int)b0) << 0) | + (((unsigned int)b1) << 8) | + (((unsigned int)b2) << 16) | + (((unsigned int)b3) << 24)); +} + + +/** + * Pack/convert 4 floats into one 4-byte word. + */ +static INLINE unsigned +pack_ui32_float4(float a, float b, float c, float d) +{ + return pack_ub4( float_to_ubyte(a), + float_to_ubyte(b), + float_to_ubyte(c), + float_to_ubyte(d) ); +} + + + +#endif /* U_PACK_COLOR_H */ |