src/mesa/drivers/dri/mga/mgadd.c

   1 /*
   2  * Copyright 2000-2001 VA Linux Systems, Inc.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  19  * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  22  * OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Keith Whitwell <keith@tungstengraphics.com>
  26  */
  27 /* $XFree86: xc/lib/GL/mesa/src/drv/mga/mgadd.c,v 1.14 2002/10/30 12:51:35 alanh Exp $ */
  28
  29
  30 #include "mtypes.h"
  31
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35
  36 #include "mm.h"
  37 #include "mgacontext.h"
  38 #include "mgadd.h"
  39 #include "mgastate.h"
  40 #include "mgaspan.h"
  41 #include "mgatex.h"
  42 #include "mgatris.h"
  43 #include "mgavb.h"
  44 #include "mga_xmesa.h"
  45 #include "extensions.h"
  46 #if defined(USE_X86_ASM)
  47 #include "X86/common_x86_asm.h"
  48 #endif
  49
  50 #define MGA_DATE        "20020221"
  51
  52
  53 /***************************************
  54  * Mesa's Driver Functions
  55  ***************************************/
  56
  57
  58 static const GLubyte *mgaDDGetString( GLcontext *ctx, GLenum name )
  59 {
  60    mgaContextPtr mmesa = MGA_CONTEXT( ctx );
  61    static char buffer[128];
  62
  63    switch ( name ) {
  64    case GL_VENDOR:
  65       return (GLubyte *) "VA Linux Systems Inc.";
  66
  67    case GL_RENDERER:
  68       sprintf( buffer, "Mesa DRI %s " MGA_DATE,
  69                MGA_IS_G400(mmesa) ? "G400" :
  70                MGA_IS_G200(mmesa) ? "G200" : "MGA" );
  71
  72       /* Append any AGP-specific information.
  73        */
  74       switch ( mmesa->mgaScreen->agpMode ) {
  75       case 1:
  76          strncat( buffer, " AGP 1x", 7 );
  77          break;
  78       case 2:
  79          strncat( buffer, " AGP 2x", 7 );
  80          break;
  81       case 4:
  82          strncat( buffer, " AGP 4x", 7 );
  83          break;
  84       }
  85
  86       /* Append any CPU-specific information.
  87        */
  88 #ifdef USE_X86_ASM
  89       if ( _mesa_x86_cpu_features ) {
  90          strncat( buffer, " x86", 4 );
  91       }
  92 #endif
  93 #ifdef USE_MMX_ASM
  94       if ( cpu_has_mmx ) {
  95          strncat( buffer, "/MMX", 4 );
  96       }
  97 #endif
  98 #ifdef USE_3DNOW_ASM
  99       if ( cpu_has_3dnow ) {
 100          strncat( buffer, "/3DNow!", 7 );
 101       }
 102 #endif
 103 #ifdef USE_SSE_ASM
 104       if ( cpu_has_xmm ) {
 105          strncat( buffer, "/SSE", 4 );
 106       }
 107 #endif
 108       return (GLubyte *)buffer;
 109
 110    default:
 111       return NULL;
 112    }
 113 }
 114
 115
 116
 117 static void mgaBufferSize(GLframebuffer *buffer, GLuint *width, GLuint *height)
 118 {
 119    GET_CURRENT_CONTEXT(ctx);
 120    mgaContextPtr mmesa = MGA_CONTEXT(ctx);
 121
 122    /* Need to lock to make sure the driDrawable is uptodate.  This
 123     * information is used to resize Mesa's software buffers, so it has
 124     * to be correct.
 125     */
 126    LOCK_HARDWARE( mmesa );
 127    *width = mmesa->driDrawable->w;
 128    *height = mmesa->driDrawable->h;
 129    UNLOCK_HARDWARE( mmesa );
 130 }
 131
 132 void mgaDDExtensionsInit( GLcontext *ctx )
 133 {
 134    /* paletted_textures currently doesn't work, but we could fix them later */
 135    /*
 136    _mesa_enable_extension( ctx, "GL_EXT_shared_texture_palette" );
 137    _mesa_enable_extension( ctx, "GL_EXT_paletted_texture" );
 138    */
 139
 140    _mesa_enable_extension( ctx, "GL_ARB_texture_compression" );
 141    _mesa_enable_extension( ctx, "GL_ARB_multisample" );
 142
 143    _mesa_enable_extension( ctx, "GL_SGIS_generate_mipmap" );
 144
 145    /* Turn on multitexture and texenv_add for the G400.
 146     */
 147    if (MGA_IS_G400(MGA_CONTEXT(ctx))) {
 148       _mesa_enable_extension( ctx, "GL_ARB_multitexture" );
 149       _mesa_enable_extension( ctx, "GL_ARB_texture_env_add" );
 150
 151       _mesa_enable_extension( ctx, "GL_EXT_texture_env_add" );
 152
 153 #if defined (MESA_packed_depth_stencil)
 154       _mesa_enable_extension( ctx, "GL_MESA_packed_depth_stencil" );
 155 #endif
 156
 157 #if defined (MESA_experimetal_agp_allocator)
 158       if (!getenv("MGA_DISABLE_AGP_ALLOCATOR"))
 159          _mesa_enable_extension( ctx, "GL_MESA_experimental_agp_allocator" );
 160 #endif
 161    }
 162 }
 163
 164
 165
 166 void mgaDDInitDriverFuncs( GLcontext *ctx )
 167 {
 168    ctx->Driver.GetBufferSize = mgaBufferSize;
 169    ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;
 170    ctx->Driver.GetString = mgaDDGetString;
 171 }