src/mesa/drivers/dri/mach64/mach64_tex.h

   1 /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      José Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #ifndef __MACH64_TEX_H__
  33 #define __MACH64_TEX_H__
  34
  35 extern void mach64UpdateTextureState( GLcontext *ctx );
  36
  37 extern void mach64UploadTexImages( mach64ContextPtr mach64ctx,
  38                                    mach64TexObjPtr t );
  39
  40 extern void mach64UploadMultiTexImages( mach64ContextPtr mach64ctx,
  41                                         mach64TexObjPtr t0, mach64TexObjPtr t1 );
  42
  43 extern void mach64DestroyTexObj( mach64ContextPtr mach64ctx,
  44                                  mach64TexObjPtr t );
  45
  46 extern void mach64EmitTexStateLocked( mach64ContextPtr mmesa,
  47                                       mach64TexObjPtr t0,
  48                                       mach64TexObjPtr t1 );
  49
  50 extern void mach64InitTextureFuncs( struct dd_function_table *functions );
  51
  52 /* ================================================================
  53  * Color conversion macros:
  54  */
  55
  56 #define MACH64PACKCOLOR332(r, g, b)                                     \
  57    (((r) & 0xe0) | (((g) & 0xe0) >> 3) | (((b) & 0xc0) >> 6))
  58
  59 #define MACH64PACKCOLOR1555(r, g, b, a)                                 \
  60    ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) |   \
  61     ((a) ? 0x8000 : 0))
  62
  63 #define MACH64PACKCOLOR565(r, g, b)                                     \
  64    ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
  65
  66 #define MACH64PACKCOLOR888(r, g, b)                                     \
  67    (((r) << 16) | ((g) << 8) | (b))
  68
  69 #define MACH64PACKCOLOR8888(r, g, b, a)                                 \
  70    (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
  71
  72 #define MACH64PACKCOLOR4444(r, g, b, a)                                 \
  73    ((((a) & 0xf0) << 8) | (((r) & 0xf0) << 4) | ((g) & 0xf0) | ((b) >> 4))
  74
  75 static INLINE GLuint mach64PackColor( GLuint cpp,
  76                                       GLubyte r, GLubyte g,
  77                                       GLubyte b, GLubyte a )
  78 {
  79    switch ( cpp ) {
  80    case 2:
  81       return MACH64PACKCOLOR565( r, g, b );
  82    case 4:
  83       return MACH64PACKCOLOR8888( r, g, b, a );
  84    default:
  85       return 0;
  86    }
  87 }
  88
  89 #endif