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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
      4  * All Rights Reserved.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sub license, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial portions
     16  * of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
     21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
     22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
     23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
     24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  **************************************************************************/
     27 
     28  /*
     29   * Authors:
     30   *   Keith Whitwell <keith (at) tungstengraphics.com>
     31   */
     32 
     33 #include "util/u_memory.h"
     34 #include "util/u_format.h"
     35 #include "util/u_half.h"
     36 #include "util/u_math.h"
     37 #include "pipe/p_state.h"
     38 #include "translate.h"
     39 
     40 
     41 #define DRAW_DBG 0
     42 
     43 typedef void (*fetch_func)(void *dst,
     44                            const uint8_t *src,
     45                            unsigned i, unsigned j);
     46 typedef void (*emit_func)(const void *attrib, void *ptr);
     47 
     48 
     49 
     50 struct translate_generic {
     51    struct translate translate;
     52 
     53    struct {
     54       enum translate_element_type type;
     55 
     56       fetch_func fetch;
     57       unsigned buffer;
     58       unsigned input_offset;
     59       unsigned instance_divisor;
     60 
     61       emit_func emit;
     62       unsigned output_offset;
     63 
     64       const uint8_t *input_ptr;
     65       unsigned input_stride;
     66       unsigned max_index;
     67 
     68       /* this value is set to -1 if this is a normal element with output_format != input_format:
     69        * in this case, u_format is used to do a full conversion
     70        *
     71        * this value is set to the format size in bytes if output_format == input_format or for 32-bit instance ids:
     72        * in this case, memcpy is used to copy this amount of bytes
     73        */
     74       int copy_size;
     75 
     76    } attrib[PIPE_MAX_ATTRIBS];
     77 
     78    unsigned nr_attrib;
     79 };
     80 
     81 
     82 static struct translate_generic *translate_generic( struct translate *translate )
     83 {
     84    return (struct translate_generic *)translate;
     85 }
     86 
     87 /**
     88  * Fetch a dword[4] vertex attribute from memory, doing format/type
     89  * conversion as needed.
     90  *
     91  * This is probably needed/dupliocated elsewhere, eg format
     92  * conversion, texture sampling etc.
     93  */
     94 #define ATTRIB( NAME, SZ, SRCTYPE, DSTTYPE, TO )        \
     95 static void						\
     96 emit_##NAME(const void *attrib, void *ptr)		\
     97 {  \
     98    unsigned i;						\
     99    SRCTYPE *in = (SRCTYPE *)attrib;                     \
    100    DSTTYPE *out = (DSTTYPE *)ptr;			\
    101 							\
    102    for (i = 0; i < SZ; i++) {				\
    103       out[i] = TO(in[i]);				\
    104    }							\
    105 }
    106 
    107 
    108 #define TO_64_FLOAT(x)   ((double) x)
    109 #define TO_32_FLOAT(x)   (x)
    110 #define TO_16_FLOAT(x)   util_float_to_half(x)
    111 
    112 #define TO_8_USCALED(x)  ((unsigned char) x)
    113 #define TO_16_USCALED(x) ((unsigned short) x)
    114 #define TO_32_USCALED(x) ((unsigned int) x)
    115 
    116 #define TO_8_SSCALED(x)  ((char) x)
    117 #define TO_16_SSCALED(x) ((short) x)
    118 #define TO_32_SSCALED(x) ((int) x)
    119 
    120 #define TO_8_UNORM(x)    ((unsigned char) (x * 255.0f))
    121 #define TO_16_UNORM(x)   ((unsigned short) (x * 65535.0f))
    122 #define TO_32_UNORM(x)   ((unsigned int) (x * 4294967295.0f))
    123 
    124 #define TO_8_SNORM(x)    ((char) (x * 127.0f))
    125 #define TO_16_SNORM(x)   ((short) (x * 32767.0f))
    126 #define TO_32_SNORM(x)   ((int) (x * 2147483647.0f))
    127 
    128 #define TO_32_FIXED(x)   ((int) (x * 65536.0f))
    129 
    130 #define TO_INT(x)        (x)
    131 
    132 
    133 ATTRIB( R64G64B64A64_FLOAT,   4, float, double, TO_64_FLOAT )
    134 ATTRIB( R64G64B64_FLOAT,      3, float, double, TO_64_FLOAT )
    135 ATTRIB( R64G64_FLOAT,         2, float, double, TO_64_FLOAT )
    136 ATTRIB( R64_FLOAT,            1, float, double, TO_64_FLOAT )
    137 
    138 ATTRIB( R32G32B32A32_FLOAT,   4, float, float, TO_32_FLOAT )
    139 ATTRIB( R32G32B32_FLOAT,      3, float, float, TO_32_FLOAT )
    140 ATTRIB( R32G32_FLOAT,         2, float, float, TO_32_FLOAT )
    141 ATTRIB( R32_FLOAT,            1, float, float, TO_32_FLOAT )
    142 
    143 ATTRIB( R16G16B16A16_FLOAT,   4, float, ushort, TO_16_FLOAT )
    144 ATTRIB( R16G16B16_FLOAT,      3, float, ushort, TO_16_FLOAT )
    145 ATTRIB( R16G16_FLOAT,         2, float, ushort, TO_16_FLOAT )
    146 ATTRIB( R16_FLOAT,            1, float, ushort, TO_16_FLOAT )
    147 
    148 ATTRIB( R32G32B32A32_USCALED, 4, float, unsigned, TO_32_USCALED )
    149 ATTRIB( R32G32B32_USCALED,    3, float, unsigned, TO_32_USCALED )
    150 ATTRIB( R32G32_USCALED,       2, float, unsigned, TO_32_USCALED )
    151 ATTRIB( R32_USCALED,          1, float, unsigned, TO_32_USCALED )
    152 
    153 ATTRIB( R32G32B32A32_SSCALED, 4, float, int, TO_32_SSCALED )
    154 ATTRIB( R32G32B32_SSCALED,    3, float, int, TO_32_SSCALED )
    155 ATTRIB( R32G32_SSCALED,       2, float, int, TO_32_SSCALED )
    156 ATTRIB( R32_SSCALED,          1, float, int, TO_32_SSCALED )
    157 
    158 ATTRIB( R32G32B32A32_UNORM, 4, float, unsigned, TO_32_UNORM )
    159 ATTRIB( R32G32B32_UNORM,    3, float, unsigned, TO_32_UNORM )
    160 ATTRIB( R32G32_UNORM,       2, float, unsigned, TO_32_UNORM )
    161 ATTRIB( R32_UNORM,          1, float, unsigned, TO_32_UNORM )
    162 
    163 ATTRIB( R32G32B32A32_SNORM, 4, float, int, TO_32_SNORM )
    164 ATTRIB( R32G32B32_SNORM,    3, float, int, TO_32_SNORM )
    165 ATTRIB( R32G32_SNORM,       2, float, int, TO_32_SNORM )
    166 ATTRIB( R32_SNORM,          1, float, int, TO_32_SNORM )
    167 
    168 ATTRIB( R16G16B16A16_USCALED, 4, float, ushort, TO_16_USCALED )
    169 ATTRIB( R16G16B16_USCALED,    3, float, ushort, TO_16_USCALED )
    170 ATTRIB( R16G16_USCALED,       2, float, ushort, TO_16_USCALED )
    171 ATTRIB( R16_USCALED,          1, float, ushort, TO_16_USCALED )
    172 
    173 ATTRIB( R16G16B16A16_SSCALED, 4, float, short, TO_16_SSCALED )
    174 ATTRIB( R16G16B16_SSCALED,    3, float, short, TO_16_SSCALED )
    175 ATTRIB( R16G16_SSCALED,       2, float, short, TO_16_SSCALED )
    176 ATTRIB( R16_SSCALED,          1, float, short, TO_16_SSCALED )
    177 
    178 ATTRIB( R16G16B16A16_UNORM, 4, float, ushort, TO_16_UNORM )
    179 ATTRIB( R16G16B16_UNORM,    3, float, ushort, TO_16_UNORM )
    180 ATTRIB( R16G16_UNORM,       2, float, ushort, TO_16_UNORM )
    181 ATTRIB( R16_UNORM,          1, float, ushort, TO_16_UNORM )
    182 
    183 ATTRIB( R16G16B16A16_SNORM, 4, float, short, TO_16_SNORM )
    184 ATTRIB( R16G16B16_SNORM,    3, float, short, TO_16_SNORM )
    185 ATTRIB( R16G16_SNORM,       2, float, short, TO_16_SNORM )
    186 ATTRIB( R16_SNORM,          1, float, short, TO_16_SNORM )
    187 
    188 ATTRIB( R8G8B8A8_USCALED,   4, float, ubyte, TO_8_USCALED )
    189 ATTRIB( R8G8B8_USCALED,     3, float, ubyte, TO_8_USCALED )
    190 ATTRIB( R8G8_USCALED,       2, float, ubyte, TO_8_USCALED )
    191 ATTRIB( R8_USCALED,         1, float, ubyte, TO_8_USCALED )
    192 
    193 ATTRIB( R8G8B8A8_SSCALED,  4, float, char, TO_8_SSCALED )
    194 ATTRIB( R8G8B8_SSCALED,    3, float, char, TO_8_SSCALED )
    195 ATTRIB( R8G8_SSCALED,      2, float, char, TO_8_SSCALED )
    196 ATTRIB( R8_SSCALED,        1, float, char, TO_8_SSCALED )
    197 
    198 ATTRIB( R8G8B8A8_UNORM,  4, float, ubyte, TO_8_UNORM )
    199 ATTRIB( R8G8B8_UNORM,    3, float, ubyte, TO_8_UNORM )
    200 ATTRIB( R8G8_UNORM,      2, float, ubyte, TO_8_UNORM )
    201 ATTRIB( R8_UNORM,        1, float, ubyte, TO_8_UNORM )
    202 
    203 ATTRIB( R8G8B8A8_SNORM,  4, float, char, TO_8_SNORM )
    204 ATTRIB( R8G8B8_SNORM,    3, float, char, TO_8_SNORM )
    205 ATTRIB( R8G8_SNORM,      2, float, char, TO_8_SNORM )
    206 ATTRIB( R8_SNORM,        1, float, char, TO_8_SNORM )
    207 
    208 ATTRIB( R32G32B32A32_UINT, 4, uint32_t, unsigned, TO_INT )
    209 ATTRIB( R32G32B32_UINT,    3, uint32_t, unsigned, TO_INT )
    210 ATTRIB( R32G32_UINT,       2, uint32_t, unsigned, TO_INT )
    211 ATTRIB( R32_UINT,          1, uint32_t, unsigned, TO_INT )
    212 
    213 ATTRIB( R16G16B16A16_UINT, 4, uint32_t, ushort, TO_INT )
    214 ATTRIB( R16G16B16_UINT,    3, uint32_t, ushort, TO_INT )
    215 ATTRIB( R16G16_UINT,       2, uint32_t, ushort, TO_INT )
    216 ATTRIB( R16_UINT,          1, uint32_t, ushort, TO_INT )
    217 
    218 ATTRIB( R8G8B8A8_UINT,   4, uint32_t, ubyte, TO_INT )
    219 ATTRIB( R8G8B8_UINT,     3, uint32_t, ubyte, TO_INT )
    220 ATTRIB( R8G8_UINT,       2, uint32_t, ubyte, TO_INT )
    221 ATTRIB( R8_UINT,         1, uint32_t, ubyte, TO_INT )
    222 
    223 ATTRIB( R32G32B32A32_SINT, 4, int32_t, int, TO_INT )
    224 ATTRIB( R32G32B32_SINT,    3, int32_t, int, TO_INT )
    225 ATTRIB( R32G32_SINT,       2, int32_t, int, TO_INT )
    226 ATTRIB( R32_SINT,          1, int32_t, int, TO_INT )
    227 
    228 ATTRIB( R16G16B16A16_SINT, 4, int32_t, short, TO_INT )
    229 ATTRIB( R16G16B16_SINT,    3, int32_t, short, TO_INT )
    230 ATTRIB( R16G16_SINT,       2, int32_t, short, TO_INT )
    231 ATTRIB( R16_SINT,          1, int32_t, short, TO_INT )
    232 
    233 ATTRIB( R8G8B8A8_SINT,   4, int32_t, char, TO_INT )
    234 ATTRIB( R8G8B8_SINT,     3, int32_t, char, TO_INT )
    235 ATTRIB( R8G8_SINT,       2, int32_t, char, TO_INT )
    236 ATTRIB( R8_SINT,         1, int32_t, char, TO_INT )
    237 
    238 static void
    239 emit_A8R8G8B8_UNORM( const void *attrib, void *ptr)
    240 {
    241    float *in = (float *)attrib;
    242    ubyte *out = (ubyte *)ptr;
    243    out[0] = TO_8_UNORM(in[3]);
    244    out[1] = TO_8_UNORM(in[0]);
    245    out[2] = TO_8_UNORM(in[1]);
    246    out[3] = TO_8_UNORM(in[2]);
    247 }
    248 
    249 static void
    250 emit_B8G8R8A8_UNORM( const void *attrib, void *ptr)
    251 {
    252    float *in = (float *)attrib;
    253    ubyte *out = (ubyte *)ptr;
    254    out[2] = TO_8_UNORM(in[0]);
    255    out[1] = TO_8_UNORM(in[1]);
    256    out[0] = TO_8_UNORM(in[2]);
    257    out[3] = TO_8_UNORM(in[3]);
    258 }
    259 
    260 static void
    261 emit_B10G10R10A2_UNORM( const void *attrib, void *ptr )
    262 {
    263    float *src = (float *)ptr;
    264    uint32_t value = 0;
    265    value |= ((uint32_t)(CLAMP(src[2], 0, 1) * 0x3ff)) & 0x3ff;
    266    value |= (((uint32_t)(CLAMP(src[1], 0, 1) * 0x3ff)) & 0x3ff) << 10;
    267    value |= (((uint32_t)(CLAMP(src[0], 0, 1) * 0x3ff)) & 0x3ff) << 20;
    268    value |= ((uint32_t)(CLAMP(src[3], 0, 1) * 0x3)) << 30;
    269 #ifdef PIPE_ARCH_BIG_ENDIAN
    270    value = util_bswap32(value);
    271 #endif
    272    *(uint32_t *)attrib = value;
    273 }
    274 
    275 static void
    276 emit_B10G10R10A2_USCALED( const void *attrib, void *ptr )
    277 {
    278    float *src = (float *)ptr;
    279    uint32_t value = 0;
    280    value |= ((uint32_t)CLAMP(src[2], 0, 1023)) & 0x3ff;
    281    value |= (((uint32_t)CLAMP(src[1], 0, 1023)) & 0x3ff) << 10;
    282    value |= (((uint32_t)CLAMP(src[0], 0, 1023)) & 0x3ff) << 20;
    283    value |= ((uint32_t)CLAMP(src[3], 0, 3)) << 30;
    284 #ifdef PIPE_ARCH_BIG_ENDIAN
    285    value = util_bswap32(value);
    286 #endif
    287    *(uint32_t *)attrib = value;
    288 }
    289 
    290 static void
    291 emit_B10G10R10A2_SNORM( const void *attrib, void *ptr )
    292 {
    293    float *src = (float *)ptr;
    294    uint32_t value = 0;
    295    value |= (uint32_t)(((uint32_t)(CLAMP(src[2], -1, 1) * 0x1ff)) & 0x3ff) ;
    296    value |= (uint32_t)((((uint32_t)(CLAMP(src[1], -1, 1) * 0x1ff)) & 0x3ff) << 10) ;
    297    value |= (uint32_t)((((uint32_t)(CLAMP(src[0], -1, 1) * 0x1ff)) & 0x3ff) << 20) ;
    298    value |= (uint32_t)(((uint32_t)(CLAMP(src[3], -1, 1) * 0x1)) << 30) ;
    299 #ifdef PIPE_ARCH_BIG_ENDIAN
    300    value = util_bswap32(value);
    301 #endif
    302    *(uint32_t *)attrib = value;
    303 }
    304 
    305 static void
    306 emit_B10G10R10A2_SSCALED( const void *attrib, void *ptr )
    307 {
    308    float *src = (float *)ptr;
    309    uint32_t value = 0;
    310    value |= (uint32_t)(((uint32_t)CLAMP(src[2], -512, 511)) & 0x3ff) ;
    311    value |= (uint32_t)((((uint32_t)CLAMP(src[1], -512, 511)) & 0x3ff) << 10) ;
    312    value |= (uint32_t)((((uint32_t)CLAMP(src[0], -512, 511)) & 0x3ff) << 20) ;
    313    value |= (uint32_t)(((uint32_t)CLAMP(src[3], -2, 1)) << 30) ;
    314 #ifdef PIPE_ARCH_BIG_ENDIAN
    315    value = util_bswap32(value);
    316 #endif
    317    *(uint32_t *)attrib = value;
    318 }
    319 
    320 static void
    321 emit_R10G10B10A2_UNORM( const void *attrib, void *ptr )
    322 {
    323    float *src = (float *)ptr;
    324    uint32_t value = 0;
    325    value |= ((uint32_t)(CLAMP(src[0], 0, 1) * 0x3ff)) & 0x3ff;
    326    value |= (((uint32_t)(CLAMP(src[1], 0, 1) * 0x3ff)) & 0x3ff) << 10;
    327    value |= (((uint32_t)(CLAMP(src[2], 0, 1) * 0x3ff)) & 0x3ff) << 20;
    328    value |= ((uint32_t)(CLAMP(src[3], 0, 1) * 0x3)) << 30;
    329 #ifdef PIPE_ARCH_BIG_ENDIAN
    330    value = util_bswap32(value);
    331 #endif
    332    *(uint32_t *)attrib = value;
    333 }
    334 
    335 static void
    336 emit_R10G10B10A2_USCALED( const void *attrib, void *ptr )
    337 {
    338    float *src = (float *)ptr;
    339    uint32_t value = 0;
    340    value |= ((uint32_t)CLAMP(src[0], 0, 1023)) & 0x3ff;
    341    value |= (((uint32_t)CLAMP(src[1], 0, 1023)) & 0x3ff) << 10;
    342    value |= (((uint32_t)CLAMP(src[2], 0, 1023)) & 0x3ff) << 20;
    343    value |= ((uint32_t)CLAMP(src[3], 0, 3)) << 30;
    344 #ifdef PIPE_ARCH_BIG_ENDIAN
    345    value = util_bswap32(value);
    346 #endif
    347    *(uint32_t *)attrib = value;
    348 }
    349 
    350 static void
    351 emit_R10G10B10A2_SNORM( const void *attrib, void *ptr )
    352 {
    353    float *src = (float *)ptr;
    354    uint32_t value = 0;
    355    value |= (uint32_t)(((uint32_t)(CLAMP(src[0], -1, 1) * 0x1ff)) & 0x3ff) ;
    356    value |= (uint32_t)((((uint32_t)(CLAMP(src[1], -1, 1) * 0x1ff)) & 0x3ff) << 10) ;
    357    value |= (uint32_t)((((uint32_t)(CLAMP(src[2], -1, 1) * 0x1ff)) & 0x3ff) << 20) ;
    358    value |= (uint32_t)(((uint32_t)(CLAMP(src[3], -1, 1) * 0x1)) << 30) ;
    359 #ifdef PIPE_ARCH_BIG_ENDIAN
    360    value = util_bswap32(value);
    361 #endif
    362    *(uint32_t *)attrib = value;
    363 }
    364 
    365 static void
    366 emit_R10G10B10A2_SSCALED( const void *attrib, void *ptr)
    367 {
    368    float *src = (float *)ptr;
    369    uint32_t value = 0;
    370    value |= (uint32_t)(((uint32_t)CLAMP(src[0], -512, 511)) & 0x3ff) ;
    371    value |= (uint32_t)((((uint32_t)CLAMP(src[1], -512, 511)) & 0x3ff) << 10) ;
    372    value |= (uint32_t)((((uint32_t)CLAMP(src[2], -512, 511)) & 0x3ff) << 20) ;
    373    value |= (uint32_t)(((uint32_t)CLAMP(src[3], -2, 1)) << 30) ;
    374 #ifdef PIPE_ARCH_BIG_ENDIAN
    375    value = util_bswap32(value);
    376 #endif
    377    *(uint32_t *)attrib = value;
    378 }
    379 
    380 static void
    381 emit_NULL( const void *attrib, void *ptr )
    382 {
    383    /* do nothing is the only sensible option */
    384 }
    385 
    386 static emit_func get_emit_func( enum pipe_format format )
    387 {
    388    switch (format) {
    389    case PIPE_FORMAT_R64_FLOAT:
    390       return &emit_R64_FLOAT;
    391    case PIPE_FORMAT_R64G64_FLOAT:
    392       return &emit_R64G64_FLOAT;
    393    case PIPE_FORMAT_R64G64B64_FLOAT:
    394       return &emit_R64G64B64_FLOAT;
    395    case PIPE_FORMAT_R64G64B64A64_FLOAT:
    396       return &emit_R64G64B64A64_FLOAT;
    397 
    398    case PIPE_FORMAT_R32_FLOAT:
    399       return &emit_R32_FLOAT;
    400    case PIPE_FORMAT_R32G32_FLOAT:
    401       return &emit_R32G32_FLOAT;
    402    case PIPE_FORMAT_R32G32B32_FLOAT:
    403       return &emit_R32G32B32_FLOAT;
    404    case PIPE_FORMAT_R32G32B32A32_FLOAT:
    405       return &emit_R32G32B32A32_FLOAT;
    406 
    407    case PIPE_FORMAT_R16_FLOAT:
    408       return &emit_R16_FLOAT;
    409    case PIPE_FORMAT_R16G16_FLOAT:
    410       return &emit_R16G16_FLOAT;
    411    case PIPE_FORMAT_R16G16B16_FLOAT:
    412       return &emit_R16G16B16_FLOAT;
    413    case PIPE_FORMAT_R16G16B16A16_FLOAT:
    414       return &emit_R16G16B16A16_FLOAT;
    415 
    416    case PIPE_FORMAT_R32_UNORM:
    417       return &emit_R32_UNORM;
    418    case PIPE_FORMAT_R32G32_UNORM:
    419       return &emit_R32G32_UNORM;
    420    case PIPE_FORMAT_R32G32B32_UNORM:
    421       return &emit_R32G32B32_UNORM;
    422    case PIPE_FORMAT_R32G32B32A32_UNORM:
    423       return &emit_R32G32B32A32_UNORM;
    424 
    425    case PIPE_FORMAT_R32_USCALED:
    426       return &emit_R32_USCALED;
    427    case PIPE_FORMAT_R32G32_USCALED:
    428       return &emit_R32G32_USCALED;
    429    case PIPE_FORMAT_R32G32B32_USCALED:
    430       return &emit_R32G32B32_USCALED;
    431    case PIPE_FORMAT_R32G32B32A32_USCALED:
    432       return &emit_R32G32B32A32_USCALED;
    433 
    434    case PIPE_FORMAT_R32_SNORM:
    435       return &emit_R32_SNORM;
    436    case PIPE_FORMAT_R32G32_SNORM:
    437       return &emit_R32G32_SNORM;
    438    case PIPE_FORMAT_R32G32B32_SNORM:
    439       return &emit_R32G32B32_SNORM;
    440    case PIPE_FORMAT_R32G32B32A32_SNORM:
    441       return &emit_R32G32B32A32_SNORM;
    442 
    443    case PIPE_FORMAT_R32_SSCALED:
    444       return &emit_R32_SSCALED;
    445    case PIPE_FORMAT_R32G32_SSCALED:
    446       return &emit_R32G32_SSCALED;
    447    case PIPE_FORMAT_R32G32B32_SSCALED:
    448       return &emit_R32G32B32_SSCALED;
    449    case PIPE_FORMAT_R32G32B32A32_SSCALED:
    450       return &emit_R32G32B32A32_SSCALED;
    451 
    452    case PIPE_FORMAT_R16_UNORM:
    453       return &emit_R16_UNORM;
    454    case PIPE_FORMAT_R16G16_UNORM:
    455       return &emit_R16G16_UNORM;
    456    case PIPE_FORMAT_R16G16B16_UNORM:
    457       return &emit_R16G16B16_UNORM;
    458    case PIPE_FORMAT_R16G16B16A16_UNORM:
    459       return &emit_R16G16B16A16_UNORM;
    460 
    461    case PIPE_FORMAT_R16_USCALED:
    462       return &emit_R16_USCALED;
    463    case PIPE_FORMAT_R16G16_USCALED:
    464       return &emit_R16G16_USCALED;
    465    case PIPE_FORMAT_R16G16B16_USCALED:
    466       return &emit_R16G16B16_USCALED;
    467    case PIPE_FORMAT_R16G16B16A16_USCALED:
    468       return &emit_R16G16B16A16_USCALED;
    469 
    470    case PIPE_FORMAT_R16_SNORM:
    471       return &emit_R16_SNORM;
    472    case PIPE_FORMAT_R16G16_SNORM:
    473       return &emit_R16G16_SNORM;
    474    case PIPE_FORMAT_R16G16B16_SNORM:
    475       return &emit_R16G16B16_SNORM;
    476    case PIPE_FORMAT_R16G16B16A16_SNORM:
    477       return &emit_R16G16B16A16_SNORM;
    478 
    479    case PIPE_FORMAT_R16_SSCALED:
    480       return &emit_R16_SSCALED;
    481    case PIPE_FORMAT_R16G16_SSCALED:
    482       return &emit_R16G16_SSCALED;
    483    case PIPE_FORMAT_R16G16B16_SSCALED:
    484       return &emit_R16G16B16_SSCALED;
    485    case PIPE_FORMAT_R16G16B16A16_SSCALED:
    486       return &emit_R16G16B16A16_SSCALED;
    487 
    488    case PIPE_FORMAT_R8_UNORM:
    489       return &emit_R8_UNORM;
    490    case PIPE_FORMAT_R8G8_UNORM:
    491       return &emit_R8G8_UNORM;
    492    case PIPE_FORMAT_R8G8B8_UNORM:
    493       return &emit_R8G8B8_UNORM;
    494    case PIPE_FORMAT_R8G8B8A8_UNORM:
    495       return &emit_R8G8B8A8_UNORM;
    496 
    497    case PIPE_FORMAT_R8_USCALED:
    498       return &emit_R8_USCALED;
    499    case PIPE_FORMAT_R8G8_USCALED:
    500       return &emit_R8G8_USCALED;
    501    case PIPE_FORMAT_R8G8B8_USCALED:
    502       return &emit_R8G8B8_USCALED;
    503    case PIPE_FORMAT_R8G8B8A8_USCALED:
    504       return &emit_R8G8B8A8_USCALED;
    505 
    506    case PIPE_FORMAT_R8_SNORM:
    507       return &emit_R8_SNORM;
    508    case PIPE_FORMAT_R8G8_SNORM:
    509       return &emit_R8G8_SNORM;
    510    case PIPE_FORMAT_R8G8B8_SNORM:
    511       return &emit_R8G8B8_SNORM;
    512    case PIPE_FORMAT_R8G8B8A8_SNORM:
    513       return &emit_R8G8B8A8_SNORM;
    514 
    515    case PIPE_FORMAT_R8_SSCALED:
    516       return &emit_R8_SSCALED;
    517    case PIPE_FORMAT_R8G8_SSCALED:
    518       return &emit_R8G8_SSCALED;
    519    case PIPE_FORMAT_R8G8B8_SSCALED:
    520       return &emit_R8G8B8_SSCALED;
    521    case PIPE_FORMAT_R8G8B8A8_SSCALED:
    522       return &emit_R8G8B8A8_SSCALED;
    523 
    524    case PIPE_FORMAT_B8G8R8A8_UNORM:
    525       return &emit_B8G8R8A8_UNORM;
    526 
    527    case PIPE_FORMAT_A8R8G8B8_UNORM:
    528       return &emit_A8R8G8B8_UNORM;
    529 
    530    case PIPE_FORMAT_R32_UINT:
    531       return &emit_R32_UINT;
    532    case PIPE_FORMAT_R32G32_UINT:
    533       return &emit_R32G32_UINT;
    534    case PIPE_FORMAT_R32G32B32_UINT:
    535       return &emit_R32G32B32_UINT;
    536    case PIPE_FORMAT_R32G32B32A32_UINT:
    537       return &emit_R32G32B32A32_UINT;
    538 
    539    case PIPE_FORMAT_R16_UINT:
    540       return &emit_R16_UINT;
    541    case PIPE_FORMAT_R16G16_UINT:
    542       return &emit_R16G16_UINT;
    543    case PIPE_FORMAT_R16G16B16_UINT:
    544       return &emit_R16G16B16_UINT;
    545    case PIPE_FORMAT_R16G16B16A16_UINT:
    546       return &emit_R16G16B16A16_UINT;
    547 
    548    case PIPE_FORMAT_R8_UINT:
    549       return &emit_R8_UINT;
    550    case PIPE_FORMAT_R8G8_UINT:
    551       return &emit_R8G8_UINT;
    552    case PIPE_FORMAT_R8G8B8_UINT:
    553       return &emit_R8G8B8_UINT;
    554    case PIPE_FORMAT_R8G8B8A8_UINT:
    555       return &emit_R8G8B8A8_UINT;
    556 
    557    case PIPE_FORMAT_R32_SINT:
    558       return &emit_R32_SINT;
    559    case PIPE_FORMAT_R32G32_SINT:
    560       return &emit_R32G32_SINT;
    561    case PIPE_FORMAT_R32G32B32_SINT:
    562       return &emit_R32G32B32_SINT;
    563    case PIPE_FORMAT_R32G32B32A32_SINT:
    564       return &emit_R32G32B32A32_SINT;
    565 
    566    case PIPE_FORMAT_R16_SINT:
    567       return &emit_R16_SINT;
    568    case PIPE_FORMAT_R16G16_SINT:
    569       return &emit_R16G16_SINT;
    570    case PIPE_FORMAT_R16G16B16_SINT:
    571       return &emit_R16G16B16_SINT;
    572    case PIPE_FORMAT_R16G16B16A16_SINT:
    573       return &emit_R16G16B16A16_SINT;
    574 
    575    case PIPE_FORMAT_R8_SINT:
    576       return &emit_R8_SINT;
    577    case PIPE_FORMAT_R8G8_SINT:
    578       return &emit_R8G8_SINT;
    579    case PIPE_FORMAT_R8G8B8_SINT:
    580       return &emit_R8G8B8_SINT;
    581    case PIPE_FORMAT_R8G8B8A8_SINT:
    582       return &emit_R8G8B8A8_SINT;
    583 
    584    case PIPE_FORMAT_B10G10R10A2_UNORM:
    585       return &emit_B10G10R10A2_UNORM;
    586    case PIPE_FORMAT_B10G10R10A2_USCALED:
    587       return &emit_B10G10R10A2_USCALED;
    588    case PIPE_FORMAT_B10G10R10A2_SNORM:
    589       return &emit_B10G10R10A2_SNORM;
    590    case PIPE_FORMAT_B10G10R10A2_SSCALED:
    591       return &emit_B10G10R10A2_SSCALED;
    592 
    593    case PIPE_FORMAT_R10G10B10A2_UNORM:
    594       return &emit_R10G10B10A2_UNORM;
    595    case PIPE_FORMAT_R10G10B10A2_USCALED:
    596       return &emit_R10G10B10A2_USCALED;
    597    case PIPE_FORMAT_R10G10B10A2_SNORM:
    598       return &emit_R10G10B10A2_SNORM;
    599    case PIPE_FORMAT_R10G10B10A2_SSCALED:
    600       return &emit_R10G10B10A2_SSCALED;
    601 
    602    default:
    603       assert(0);
    604       return &emit_NULL;
    605    }
    606 }
    607 
    608 static ALWAYS_INLINE void PIPE_CDECL generic_run_one( struct translate_generic *tg,
    609                                          unsigned elt,
    610                                          unsigned instance_id,
    611                                          void *vert )
    612 {
    613    unsigned nr_attrs = tg->nr_attrib;
    614    unsigned attr;
    615 
    616    for (attr = 0; attr < nr_attrs; attr++) {
    617       float data[4];
    618       uint8_t *dst = (uint8_t *)vert + tg->attrib[attr].output_offset;
    619 
    620       if (tg->attrib[attr].type == TRANSLATE_ELEMENT_NORMAL) {
    621          const uint8_t *src;
    622          unsigned index;
    623          int copy_size;
    624 
    625          if (tg->attrib[attr].instance_divisor) {
    626             index = instance_id / tg->attrib[attr].instance_divisor;
    627             /* XXX we need to clamp the index here too, but to a
    628              * per-array max value, not the draw->pt.max_index value
    629              * that's being given to us via translate->set_buffer().
    630              */
    631          }
    632          else {
    633             index = elt;
    634             /* clamp to avoid going out of bounds */
    635             index = MIN2(index, tg->attrib[attr].max_index);
    636          }
    637 
    638          src = tg->attrib[attr].input_ptr +
    639                tg->attrib[attr].input_stride * index;
    640 
    641          copy_size = tg->attrib[attr].copy_size;
    642          if(likely(copy_size >= 0))
    643             memcpy(dst, src, copy_size);
    644          else
    645          {
    646             tg->attrib[attr].fetch( data, src, 0, 0 );
    647 
    648             if (0)
    649                debug_printf("Fetch linear attr %d  from %p  stride %d  index %d: "
    650                          " %f, %f, %f, %f \n",
    651                          attr,
    652                          tg->attrib[attr].input_ptr,
    653                          tg->attrib[attr].input_stride,
    654                          index,
    655                          data[0], data[1],data[2], data[3]);
    656 
    657             tg->attrib[attr].emit( data, dst );
    658          }
    659       } else {
    660          if(likely(tg->attrib[attr].copy_size >= 0))
    661             memcpy(data, &instance_id, 4);
    662          else
    663          {
    664             data[0] = (float)instance_id;
    665             tg->attrib[attr].emit( data, dst );
    666          }
    667       }
    668    }
    669 }
    670 
    671 /**
    672  * Fetch vertex attributes for 'count' vertices.
    673  */
    674 static void PIPE_CDECL generic_run_elts( struct translate *translate,
    675                                          const unsigned *elts,
    676                                          unsigned count,
    677                                          unsigned instance_id,
    678                                          void *output_buffer )
    679 {
    680    struct translate_generic *tg = translate_generic(translate);
    681    char *vert = output_buffer;
    682    unsigned i;
    683 
    684    for (i = 0; i < count; i++) {
    685       generic_run_one(tg, *elts++, instance_id, vert);
    686       vert += tg->translate.key.output_stride;
    687    }
    688 }
    689 
    690 static void PIPE_CDECL generic_run_elts16( struct translate *translate,
    691                                          const uint16_t *elts,
    692                                          unsigned count,
    693                                          unsigned instance_id,
    694                                          void *output_buffer )
    695 {
    696    struct translate_generic *tg = translate_generic(translate);
    697    char *vert = output_buffer;
    698    unsigned i;
    699 
    700    for (i = 0; i < count; i++) {
    701       generic_run_one(tg, *elts++, instance_id, vert);
    702       vert += tg->translate.key.output_stride;
    703    }
    704 }
    705 
    706 static void PIPE_CDECL generic_run_elts8( struct translate *translate,
    707                                          const uint8_t *elts,
    708                                          unsigned count,
    709                                          unsigned instance_id,
    710                                          void *output_buffer )
    711 {
    712    struct translate_generic *tg = translate_generic(translate);
    713    char *vert = output_buffer;
    714    unsigned i;
    715 
    716    for (i = 0; i < count; i++) {
    717       generic_run_one(tg, *elts++, instance_id, vert);
    718       vert += tg->translate.key.output_stride;
    719    }
    720 }
    721 
    722 static void PIPE_CDECL generic_run( struct translate *translate,
    723                                     unsigned start,
    724                                     unsigned count,
    725                                     unsigned instance_id,
    726                                     void *output_buffer )
    727 {
    728    struct translate_generic *tg = translate_generic(translate);
    729    char *vert = output_buffer;
    730    unsigned i;
    731 
    732    for (i = 0; i < count; i++) {
    733       generic_run_one(tg, start + i, instance_id, vert);
    734       vert += tg->translate.key.output_stride;
    735    }
    736 }
    737 
    738 
    739 
    740 static void generic_set_buffer( struct translate *translate,
    741 				unsigned buf,
    742 				const void *ptr,
    743 				unsigned stride,
    744 				unsigned max_index )
    745 {
    746    struct translate_generic *tg = translate_generic(translate);
    747    unsigned i;
    748 
    749    for (i = 0; i < tg->nr_attrib; i++) {
    750       if (tg->attrib[i].buffer == buf) {
    751 	 tg->attrib[i].input_ptr = ((const uint8_t *)ptr +
    752 				    tg->attrib[i].input_offset);
    753 	 tg->attrib[i].input_stride = stride;
    754          tg->attrib[i].max_index = max_index;
    755       }
    756    }
    757 }
    758 
    759 
    760 static void generic_release( struct translate *translate )
    761 {
    762    /* Refcount?
    763     */
    764    FREE(translate);
    765 }
    766 
    767 static boolean
    768 is_legal_int_format_combo( const struct util_format_description *src,
    769                            const struct util_format_description *dst )
    770 {
    771    unsigned i;
    772    unsigned nr = MIN2(src->nr_channels, dst->nr_channels);
    773 
    774    for (i = 0; i < nr; i++) {
    775       /* The signs must match. */
    776       if (src->channel[i].type != dst->channel[i].type) {
    777          return FALSE;
    778       }
    779 
    780       /* Integers must not lose precision at any point in the pipeline. */
    781       if (src->channel[i].size > dst->channel[i].size) {
    782          return FALSE;
    783       }
    784    }
    785    return TRUE;
    786 }
    787 
    788 struct translate *translate_generic_create( const struct translate_key *key )
    789 {
    790    struct translate_generic *tg = CALLOC_STRUCT(translate_generic);
    791    unsigned i;
    792 
    793    if (tg == NULL)
    794       return NULL;
    795 
    796    tg->translate.key = *key;
    797    tg->translate.release = generic_release;
    798    tg->translate.set_buffer = generic_set_buffer;
    799    tg->translate.run_elts = generic_run_elts;
    800    tg->translate.run_elts16 = generic_run_elts16;
    801    tg->translate.run_elts8 = generic_run_elts8;
    802    tg->translate.run = generic_run;
    803 
    804    for (i = 0; i < key->nr_elements; i++) {
    805       const struct util_format_description *format_desc =
    806             util_format_description(key->element[i].input_format);
    807 
    808       assert(format_desc);
    809       assert(format_desc->fetch_rgba_float);
    810 
    811       tg->attrib[i].type = key->element[i].type;
    812 
    813       if (format_desc->channel[0].pure_integer) {
    814          const struct util_format_description *out_format_desc =
    815                util_format_description(key->element[i].output_format);
    816 
    817          if (!is_legal_int_format_combo(format_desc, out_format_desc)) {
    818             FREE(tg);
    819             return NULL;
    820          }
    821 
    822          if (format_desc->channel[0].type == UTIL_FORMAT_TYPE_SIGNED) {
    823             tg->attrib[i].fetch = (fetch_func)format_desc->fetch_rgba_sint;
    824          } else {
    825             tg->attrib[i].fetch = (fetch_func)format_desc->fetch_rgba_uint;
    826          }
    827       } else {
    828          tg->attrib[i].fetch = (fetch_func)format_desc->fetch_rgba_float;
    829       }
    830 
    831       tg->attrib[i].buffer = key->element[i].input_buffer;
    832       tg->attrib[i].input_offset = key->element[i].input_offset;
    833       tg->attrib[i].instance_divisor = key->element[i].instance_divisor;
    834 
    835       tg->attrib[i].output_offset = key->element[i].output_offset;
    836 
    837       tg->attrib[i].copy_size = -1;
    838       if (tg->attrib[i].type == TRANSLATE_ELEMENT_INSTANCE_ID)
    839       {
    840             if(key->element[i].output_format == PIPE_FORMAT_R32_USCALED
    841                   || key->element[i].output_format == PIPE_FORMAT_R32_SSCALED)
    842                tg->attrib[i].copy_size = 4;
    843       }
    844       else
    845       {
    846          if(key->element[i].input_format == key->element[i].output_format
    847                && format_desc->block.width == 1
    848                && format_desc->block.height == 1
    849                && !(format_desc->block.bits & 7))
    850             tg->attrib[i].copy_size = format_desc->block.bits >> 3;
    851       }
    852 
    853       if(tg->attrib[i].copy_size < 0)
    854 	      tg->attrib[i].emit = get_emit_func(key->element[i].output_format);
    855       else
    856 	      tg->attrib[i].emit  = NULL;
    857    }
    858 
    859    tg->nr_attrib = key->nr_elements;
    860 
    861 
    862    return &tg->translate;
    863 }
    864 
    865 boolean translate_generic_is_output_format_supported(enum pipe_format format)
    866 {
    867    switch(format)
    868    {
    869    case PIPE_FORMAT_R64G64B64A64_FLOAT: return TRUE;
    870    case PIPE_FORMAT_R64G64B64_FLOAT: return TRUE;
    871    case PIPE_FORMAT_R64G64_FLOAT: return TRUE;
    872    case PIPE_FORMAT_R64_FLOAT: return TRUE;
    873 
    874    case PIPE_FORMAT_R32G32B32A32_FLOAT: return TRUE;
    875    case PIPE_FORMAT_R32G32B32_FLOAT: return TRUE;
    876    case PIPE_FORMAT_R32G32_FLOAT: return TRUE;
    877    case PIPE_FORMAT_R32_FLOAT: return TRUE;
    878 
    879    case PIPE_FORMAT_R16G16B16A16_FLOAT: return TRUE;
    880    case PIPE_FORMAT_R16G16B16_FLOAT: return TRUE;
    881    case PIPE_FORMAT_R16G16_FLOAT: return TRUE;
    882    case PIPE_FORMAT_R16_FLOAT: return TRUE;
    883 
    884    case PIPE_FORMAT_R32G32B32A32_USCALED: return TRUE;
    885    case PIPE_FORMAT_R32G32B32_USCALED: return TRUE;
    886    case PIPE_FORMAT_R32G32_USCALED: return TRUE;
    887    case PIPE_FORMAT_R32_USCALED: return TRUE;
    888 
    889    case PIPE_FORMAT_R32G32B32A32_SSCALED: return TRUE;
    890    case PIPE_FORMAT_R32G32B32_SSCALED: return TRUE;
    891    case PIPE_FORMAT_R32G32_SSCALED: return TRUE;
    892    case PIPE_FORMAT_R32_SSCALED: return TRUE;
    893 
    894    case PIPE_FORMAT_R32G32B32A32_UNORM: return TRUE;
    895    case PIPE_FORMAT_R32G32B32_UNORM: return TRUE;
    896    case PIPE_FORMAT_R32G32_UNORM: return TRUE;
    897    case PIPE_FORMAT_R32_UNORM: return TRUE;
    898 
    899    case PIPE_FORMAT_R32G32B32A32_SNORM: return TRUE;
    900    case PIPE_FORMAT_R32G32B32_SNORM: return TRUE;
    901    case PIPE_FORMAT_R32G32_SNORM: return TRUE;
    902    case PIPE_FORMAT_R32_SNORM: return TRUE;
    903 
    904    case PIPE_FORMAT_R16G16B16A16_USCALED: return TRUE;
    905    case PIPE_FORMAT_R16G16B16_USCALED: return TRUE;
    906    case PIPE_FORMAT_R16G16_USCALED: return TRUE;
    907    case PIPE_FORMAT_R16_USCALED: return TRUE;
    908 
    909    case PIPE_FORMAT_R16G16B16A16_SSCALED: return TRUE;
    910    case PIPE_FORMAT_R16G16B16_SSCALED: return TRUE;
    911    case PIPE_FORMAT_R16G16_SSCALED: return TRUE;
    912    case PIPE_FORMAT_R16_SSCALED: return TRUE;
    913 
    914    case PIPE_FORMAT_R16G16B16A16_UNORM: return TRUE;
    915    case PIPE_FORMAT_R16G16B16_UNORM: return TRUE;
    916    case PIPE_FORMAT_R16G16_UNORM: return TRUE;
    917    case PIPE_FORMAT_R16_UNORM: return TRUE;
    918 
    919    case PIPE_FORMAT_R16G16B16A16_SNORM: return TRUE;
    920    case PIPE_FORMAT_R16G16B16_SNORM: return TRUE;
    921    case PIPE_FORMAT_R16G16_SNORM: return TRUE;
    922    case PIPE_FORMAT_R16_SNORM: return TRUE;
    923 
    924    case PIPE_FORMAT_R8G8B8A8_USCALED: return TRUE;
    925    case PIPE_FORMAT_R8G8B8_USCALED: return TRUE;
    926    case PIPE_FORMAT_R8G8_USCALED: return TRUE;
    927    case PIPE_FORMAT_R8_USCALED: return TRUE;
    928 
    929    case PIPE_FORMAT_R8G8B8A8_SSCALED: return TRUE;
    930    case PIPE_FORMAT_R8G8B8_SSCALED: return TRUE;
    931    case PIPE_FORMAT_R8G8_SSCALED: return TRUE;
    932    case PIPE_FORMAT_R8_SSCALED: return TRUE;
    933 
    934    case PIPE_FORMAT_R8G8B8A8_UNORM: return TRUE;
    935    case PIPE_FORMAT_R8G8B8_UNORM: return TRUE;
    936    case PIPE_FORMAT_R8G8_UNORM: return TRUE;
    937    case PIPE_FORMAT_R8_UNORM: return TRUE;
    938 
    939    case PIPE_FORMAT_R8G8B8A8_SNORM: return TRUE;
    940    case PIPE_FORMAT_R8G8B8_SNORM: return TRUE;
    941    case PIPE_FORMAT_R8G8_SNORM: return TRUE;
    942    case PIPE_FORMAT_R8_SNORM: return TRUE;
    943 
    944    case PIPE_FORMAT_A8R8G8B8_UNORM: return TRUE;
    945    case PIPE_FORMAT_B8G8R8A8_UNORM: return TRUE;
    946 
    947    case PIPE_FORMAT_R32G32B32A32_UINT: return TRUE;
    948    case PIPE_FORMAT_R32G32B32_UINT: return TRUE;
    949    case PIPE_FORMAT_R32G32_UINT: return TRUE;
    950    case PIPE_FORMAT_R32_UINT: return TRUE;
    951 
    952    case PIPE_FORMAT_R16G16B16A16_UINT: return TRUE;
    953    case PIPE_FORMAT_R16G16B16_UINT: return TRUE;
    954    case PIPE_FORMAT_R16G16_UINT: return TRUE;
    955    case PIPE_FORMAT_R16_UINT: return TRUE;
    956 
    957    case PIPE_FORMAT_R8G8B8A8_UINT: return TRUE;
    958    case PIPE_FORMAT_R8G8B8_UINT: return TRUE;
    959    case PIPE_FORMAT_R8G8_UINT: return TRUE;
    960    case PIPE_FORMAT_R8_UINT: return TRUE;
    961 
    962    case PIPE_FORMAT_R32G32B32A32_SINT: return TRUE;
    963    case PIPE_FORMAT_R32G32B32_SINT: return TRUE;
    964    case PIPE_FORMAT_R32G32_SINT: return TRUE;
    965    case PIPE_FORMAT_R32_SINT: return TRUE;
    966 
    967    case PIPE_FORMAT_R16G16B16A16_SINT: return TRUE;
    968    case PIPE_FORMAT_R16G16B16_SINT: return TRUE;
    969    case PIPE_FORMAT_R16G16_SINT: return TRUE;
    970    case PIPE_FORMAT_R16_SINT: return TRUE;
    971 
    972    case PIPE_FORMAT_R8G8B8A8_SINT: return TRUE;
    973    case PIPE_FORMAT_R8G8B8_SINT: return TRUE;
    974    case PIPE_FORMAT_R8G8_SINT: return TRUE;
    975    case PIPE_FORMAT_R8_SINT: return TRUE;
    976 
    977    case PIPE_FORMAT_B10G10R10A2_UNORM: return TRUE;
    978    case PIPE_FORMAT_B10G10R10A2_USCALED: return TRUE;
    979    case PIPE_FORMAT_B10G10R10A2_SNORM: return TRUE;
    980    case PIPE_FORMAT_B10G10R10A2_SSCALED: return TRUE;
    981 
    982    case PIPE_FORMAT_R10G10B10A2_UNORM: return TRUE;
    983    case PIPE_FORMAT_R10G10B10A2_USCALED: return TRUE;
    984    case PIPE_FORMAT_R10G10B10A2_SNORM: return TRUE;
    985    case PIPE_FORMAT_R10G10B10A2_SSCALED: return TRUE;
    986 
    987    default: return FALSE;
    988    }
    989 }
    990