src/mesa/drivers/dri/gamma/gamma_dd.c

   1 /*
   2  * Copyright 2001 by Alan Hourihane.
   3  *
   4  * Permission to use, copy, modify, distribute, and sell this software and its
   5  * documentation for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice appear in all copies and that both that
   7  * copyright notice and this permission notice appear in supporting
   8  * documentation, and that the name of Alan Hourihane not be used in
   9  * advertising or publicity pertaining to distribution of the software without
  10  * specific, written prior permission.  Alan Hourihane makes no representations
  11  * about the suitability of this software for any purpose.  It is provided
  12  * "as is" without express or implied warranty.
  13  *
  14  * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  15  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  16  * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  17  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  18  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  19  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  20  * PERFORMANCE OF THIS SOFTWARE.
  21  *
  22  * Authors:  Alan Hourihane, <alanh@tungstengraphics.com>
  23  *
  24  */
  25
  26 #include "gamma_context.h"
  27 #include "gamma_vb.h"
  28 #include "gamma_lock.h"
  29 #if defined(USE_X86_ASM)
  30 #include "x86/common_x86_asm.h"
  31 #endif
  32
  33 #include "context.h"
  34 #include "swrast/swrast.h"
  35
  36 #define GAMMA_DATE      "20021125"
  37
  38
  39 /* Return the width and height of the current color buffer.
  40  */
  41 static void gammaDDGetBufferSize( GLframebuffer *buffer,
  42                                  GLuint *width, GLuint *height )
  43 {
  44    GET_CURRENT_CONTEXT(ctx);
  45    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
  46
  47    GAMMAHW_LOCK( gmesa );
  48    *width  = gmesa->driDrawable->w;
  49    *height = gmesa->driDrawable->h;
  50    GAMMAHW_UNLOCK( gmesa );
  51 }
  52
  53
  54 /* Return various strings for glGetString().
  55  */
  56 static const GLubyte *gammaDDGetString( GLcontext *ctx, GLenum name )
  57 {
  58    static char buffer[128];
  59
  60    switch ( name ) {
  61    case GL_VENDOR:
  62       return (GLubyte *)"VA Linux Systems, Inc.";
  63
  64    case GL_RENDERER:
  65       sprintf( buffer, "Mesa DRI Gamma " GAMMA_DATE );
  66
  67       /* Append any CPU-specific information.
  68        */
  69 #ifdef USE_X86_ASM
  70       if ( _mesa_x86_cpu_features ) {
  71          strncat( buffer, " x86", 4 );
  72       }
  73 #ifdef USE_MMX_ASM
  74       if ( cpu_has_mmx ) {
  75          strncat( buffer, "/MMX", 4 );
  76       }
  77 #endif
  78 #ifdef USE_3DNOW_ASM
  79       if ( cpu_has_3dnow ) {
  80          strncat( buffer, "/3DNow!", 7 );
  81       }
  82 #endif
  83 #ifdef USE_SSE_ASM
  84       if ( cpu_has_xmm ) {
  85          strncat( buffer, "/SSE", 4 );
  86       }
  87 #endif
  88 #endif
  89       return (GLubyte *)buffer;
  90
  91    default:
  92       return NULL;
  93    }
  94 }
  95
  96 /* Enable the extensions supported by this driver.
  97  */
  98 void gammaDDInitExtensions( GLcontext *ctx )
  99 {
 100    /* None... */
 101 }
 102
 103 /* Initialize the driver's misc functions.
 104  */
 105 void gammaDDInitDriverFuncs( GLcontext *ctx )
 106 {
 107    ctx->Driver.GetBufferSize            = gammaDDGetBufferSize;
 108    ctx->Driver.ResizeBuffers            = _swrast_alloc_buffers;
 109    ctx->Driver.GetString                = gammaDDGetString;
 110
 111    ctx->Driver.Error                    = NULL;
 112
 113    /* Pixel path fallbacks
 114     */
 115    ctx->Driver.Accum                    = _swrast_Accum;
 116    ctx->Driver.Bitmap                   = _swrast_Bitmap;
 117    ctx->Driver.CopyPixels               = _swrast_CopyPixels;
 118    ctx->Driver.DrawPixels               = _swrast_DrawPixels;
 119    ctx->Driver.ReadPixels               = _swrast_ReadPixels;
 120    ctx->Driver.ResizeBuffers            = _swrast_alloc_buffers;
 121
 122    /* Swrast hooks for imaging extensions:
 123     */
 124    ctx->Driver.CopyColorTable           = _swrast_CopyColorTable;
 125    ctx->Driver.CopyColorSubTable        = _swrast_CopyColorSubTable;
 126    ctx->Driver.CopyConvolutionFilter1D  = _swrast_CopyConvolutionFilter1D;
 127    ctx->Driver.CopyConvolutionFilter2D  = _swrast_CopyConvolutionFilter2D;
 128 }