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      1 /**************************************************************************
      2  *
      3  * Copyright 2003 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 #include "main/glheader.h"
     30 #include "main/context.h"
     31 #include "main/macros.h"
     32 #include "main/enums.h"
     33 #include "main/colormac.h"
     34 #include "main/dd.h"
     35 
     36 #include "intel_screen.h"
     37 #include "intel_context.h"
     38 
     39 int
     40 intel_translate_shadow_compare_func(GLenum func)
     41 {
     42    switch (func) {
     43    case GL_NEVER:
     44        return COMPAREFUNC_ALWAYS;
     45    case GL_LESS:
     46        return COMPAREFUNC_LEQUAL;
     47    case GL_LEQUAL:
     48        return COMPAREFUNC_LESS;
     49    case GL_GREATER:
     50        return COMPAREFUNC_GEQUAL;
     51    case GL_GEQUAL:
     52       return COMPAREFUNC_GREATER;
     53    case GL_NOTEQUAL:
     54       return COMPAREFUNC_EQUAL;
     55    case GL_EQUAL:
     56       return COMPAREFUNC_NOTEQUAL;
     57    case GL_ALWAYS:
     58        return COMPAREFUNC_NEVER;
     59    }
     60 
     61    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
     62    return COMPAREFUNC_NEVER;
     63 }
     64 
     65 int
     66 intel_translate_compare_func(GLenum func)
     67 {
     68    switch (func) {
     69    case GL_NEVER:
     70       return COMPAREFUNC_NEVER;
     71    case GL_LESS:
     72       return COMPAREFUNC_LESS;
     73    case GL_LEQUAL:
     74       return COMPAREFUNC_LEQUAL;
     75    case GL_GREATER:
     76       return COMPAREFUNC_GREATER;
     77    case GL_GEQUAL:
     78       return COMPAREFUNC_GEQUAL;
     79    case GL_NOTEQUAL:
     80       return COMPAREFUNC_NOTEQUAL;
     81    case GL_EQUAL:
     82       return COMPAREFUNC_EQUAL;
     83    case GL_ALWAYS:
     84       return COMPAREFUNC_ALWAYS;
     85    }
     86 
     87    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func);
     88    return COMPAREFUNC_ALWAYS;
     89 }
     90 
     91 int
     92 intel_translate_stencil_op(GLenum op)
     93 {
     94    switch (op) {
     95    case GL_KEEP:
     96       return STENCILOP_KEEP;
     97    case GL_ZERO:
     98       return STENCILOP_ZERO;
     99    case GL_REPLACE:
    100       return STENCILOP_REPLACE;
    101    case GL_INCR:
    102       return STENCILOP_INCRSAT;
    103    case GL_DECR:
    104       return STENCILOP_DECRSAT;
    105    case GL_INCR_WRAP:
    106       return STENCILOP_INCR;
    107    case GL_DECR_WRAP:
    108       return STENCILOP_DECR;
    109    case GL_INVERT:
    110       return STENCILOP_INVERT;
    111    default:
    112       return STENCILOP_ZERO;
    113    }
    114 }
    115 
    116 int
    117 intel_translate_blend_factor(GLenum factor)
    118 {
    119    switch (factor) {
    120    case GL_ZERO:
    121       return BLENDFACT_ZERO;
    122    case GL_SRC_ALPHA:
    123       return BLENDFACT_SRC_ALPHA;
    124    case GL_ONE:
    125       return BLENDFACT_ONE;
    126    case GL_SRC_COLOR:
    127       return BLENDFACT_SRC_COLR;
    128    case GL_ONE_MINUS_SRC_COLOR:
    129       return BLENDFACT_INV_SRC_COLR;
    130    case GL_DST_COLOR:
    131       return BLENDFACT_DST_COLR;
    132    case GL_ONE_MINUS_DST_COLOR:
    133       return BLENDFACT_INV_DST_COLR;
    134    case GL_ONE_MINUS_SRC_ALPHA:
    135       return BLENDFACT_INV_SRC_ALPHA;
    136    case GL_DST_ALPHA:
    137       return BLENDFACT_DST_ALPHA;
    138    case GL_ONE_MINUS_DST_ALPHA:
    139       return BLENDFACT_INV_DST_ALPHA;
    140    case GL_SRC_ALPHA_SATURATE:
    141       return BLENDFACT_SRC_ALPHA_SATURATE;
    142    case GL_CONSTANT_COLOR:
    143       return BLENDFACT_CONST_COLOR;
    144    case GL_ONE_MINUS_CONSTANT_COLOR:
    145       return BLENDFACT_INV_CONST_COLOR;
    146    case GL_CONSTANT_ALPHA:
    147       return BLENDFACT_CONST_ALPHA;
    148    case GL_ONE_MINUS_CONSTANT_ALPHA:
    149       return BLENDFACT_INV_CONST_ALPHA;
    150    }
    151 
    152    fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor);
    153    return BLENDFACT_ZERO;
    154 }
    155 
    156 int
    157 intel_translate_logic_op(GLenum opcode)
    158 {
    159    switch (opcode) {
    160    case GL_CLEAR:
    161       return LOGICOP_CLEAR;
    162    case GL_AND:
    163       return LOGICOP_AND;
    164    case GL_AND_REVERSE:
    165       return LOGICOP_AND_RVRSE;
    166    case GL_COPY:
    167       return LOGICOP_COPY;
    168    case GL_COPY_INVERTED:
    169       return LOGICOP_COPY_INV;
    170    case GL_AND_INVERTED:
    171       return LOGICOP_AND_INV;
    172    case GL_NOOP:
    173       return LOGICOP_NOOP;
    174    case GL_XOR:
    175       return LOGICOP_XOR;
    176    case GL_OR:
    177       return LOGICOP_OR;
    178    case GL_OR_INVERTED:
    179       return LOGICOP_OR_INV;
    180    case GL_NOR:
    181       return LOGICOP_NOR;
    182    case GL_EQUIV:
    183       return LOGICOP_EQUIV;
    184    case GL_INVERT:
    185       return LOGICOP_INV;
    186    case GL_OR_REVERSE:
    187       return LOGICOP_OR_RVRSE;
    188    case GL_NAND:
    189       return LOGICOP_NAND;
    190    case GL_SET:
    191       return LOGICOP_SET;
    192    default:
    193       return LOGICOP_SET;
    194    }
    195 }
    196