workbench/libs/mesa/src/gallium/state_trackers/arosmesa/arosmesa_funcs.c

   1 /*
   2     Copyright 2009-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include "arosmesa_funcs.h"
   7 #include <proto/utility.h>
   8 #include <proto/exec.h>
   9 #include <proto/graphics.h>
  10 #include <proto/cybergraphics.h>
  11 #include <cybergraphx/cybergraphics.h>
  12 #include <graphics/rpattr.h>
  13 #include <aros/debug.h>
  14
  15 VOID AROSMesaSelectRastPort(struct arosmesa_context * amesa, struct TagItem * tagList)
  16 {
  17     amesa->Screen = (struct Screen *)GetTagData(GLA_Screen, 0, tagList);
  18     amesa->window = (struct Window *)GetTagData(GLA_Window, 0, tagList);
  19     amesa->visible_rp = (struct RastPort *)GetTagData(GLA_RastPort, 0, tagList);
  20
  21     if (amesa->Screen)
  22     {
  23         D(bug("[AROSMESA] AROSMesaSelectRastPort: Screen @ %x\n", amesa->Screen));
  24         if (amesa->window)
  25         {
  26             D(bug("[AROSMESA] AROSMesaSelectRastPort: Window @ %x\n", amesa->window));
  27             if (!(amesa->visible_rp))
  28             {
  29                 /* Use the windows rastport */
  30                 amesa->visible_rp = amesa->window->RPort;
  31                 D(bug("[AROSMESA] AROSMesaSelectRastPort: Windows RastPort @ %x\n", amesa->visible_rp));
  32             }
  33         }
  34         else
  35         {
  36             if (!(amesa->visible_rp))
  37             {
  38                 /* Use the screens rastport */
  39                 amesa->visible_rp = &amesa->Screen->RastPort;
  40                 D(bug("[AROSMESA] AROSMesaSelectRastPort: Screens RastPort @ %x\n", amesa->visible_rp));
  41             }
  42         }
  43     }
  44     else
  45     {
  46         /* Not passed a screen */
  47         if (amesa->window)
  48         {
  49             D(bug("[AROSMESA] AROSMesaSelectRastPort: Window @ %x\n", amesa->window));
  50             /* Use the windows Screen */
  51             amesa->Screen = amesa->window->WScreen;
  52             D(bug("[AROSMESA] AROSMesaSelectRastPort: Windows Screen @ %x\n", amesa->Screen));
  53
  54             if (!(amesa->visible_rp))
  55             {
  56                 /* Use the windows rastport */
  57                 amesa->visible_rp = amesa->window->RPort;
  58                 D(bug("[AROSMESA] AROSMesaSelectRastPort: Windows RastPort @ %x\n", amesa->visible_rp));
  59             }
  60         }
  61         else
  62         {
  63             /* Only Passed A Rastport */
  64             D(bug("[AROSMESA] AROSMesaSelectRastPort: Using RastPort only!\n"));
  65         }
  66     }
  67
  68     D(bug("[AROSMESA] AROSMesaSelectRastPort: Using RastPort @ %x\n", amesa->visible_rp));
  69 }
  70
  71 BOOL AROSMesaStandardInit(struct arosmesa_context * amesa, struct TagItem *tagList)
  72 {
  73     LONG requestedwidth = 0, requestedheight = 0;
  74     LONG requestedright = 0, requestedbottom = 0;
  75     LONG defaultleft = 0, defaulttop = 0;
  76     LONG defaultright = 0, defaultbottom = 0;
  77
  78     /* Set the defaults based on window information */
  79     if (amesa->window)
  80     {
  81         if(!(amesa->window->Flags & WFLG_GIMMEZEROZERO))
  82         {
  83             defaultleft     = amesa->window->BorderLeft;
  84             defaulttop      = amesa->window->BorderTop;
  85             defaultright    = amesa->window->BorderRight;
  86             defaultbottom   = amesa->window->BorderBottom;
  87         }
  88     }
  89
  90     D(bug("[AROSMESA] AROSMesaStandardInit(amesa @ %x, taglist @ %x)\n", amesa, tagList));
  91     D(bug("[AROSMESA] AROSMesaStandardInit: Using RastPort @ %x\n", amesa->visible_rp));
  92
  93     amesa->visible_rp = CloneRastPort(amesa->visible_rp);
  94
  95     D(bug("[AROSMESA] AROSMesaStandardInit: Cloned RastPort @ %x\n", amesa->visible_rp));
  96
  97     /* We assume left and top are given or if there is a window, set to border left/top
  98        or if there is no window set to 0 */
  99     amesa->left = GetTagData(GLA_Left, defaultleft, tagList);
 100     amesa->top = GetTagData(GLA_Top, defaulttop, tagList);
 101
 102     requestedright = GetTagData(GLA_Right, -1, tagList);
 103     requestedbottom = GetTagData(GLA_Bottom, -1, tagList);
 104     requestedwidth = GetTagData(GLA_Width, -1 , tagList);
 105     requestedheight = GetTagData(GLA_Height, -1 , tagList);
 106
 107     /* Calculate rastport dimensions */
 108     amesa->visible_rp_width =
 109         amesa->visible_rp->Layer->bounds.MaxX - amesa->visible_rp->Layer->bounds.MinX + 1;
 110
 111     amesa->visible_rp_height =
 112         amesa->visible_rp->Layer->bounds.MaxY - amesa->visible_rp->Layer->bounds.MinY + 1;
 113
 114     /* right will be either passed or calculated from width or 0 */
 115     amesa->right = 0;
 116     if (requestedright < 0)
 117     {
 118         if (requestedwidth >= 0)
 119         {
 120             requestedright = amesa->visible_rp_width - amesa->left - requestedwidth;
 121             if (requestedright < 0) requestedright = 0;
 122         }
 123         else
 124             requestedright = defaultright; /* Set the default here, not in GetDataData */
 125     }
 126     amesa->right = requestedright;
 127
 128     /* bottom will be either passed or calculated from height or 0 */
 129     amesa->bottom = 0;
 130     if (requestedbottom < 0)
 131     {
 132         if (requestedheight >= 0)
 133         {
 134             requestedbottom = amesa->visible_rp_height - amesa->top - requestedheight;
 135             if (requestedbottom < 0) requestedbottom = 0;
 136         }
 137         else
 138             requestedbottom = defaultbottom; /* Set the default here, not in GetDataData */
 139     }
 140     amesa->bottom = requestedbottom;
 141
 142     /* Init screen information */
 143     if (amesa->Screen)
 144         amesa->BitsPerPixel  = GetCyberMapAttr(amesa->Screen->RastPort.BitMap, CYBRMATTR_BPPIX) * 8;
 145
 146     D(bug("[AROSMESA] AROSMesaStandardInit: Context Base dimensions set -:\n"));
 147     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->visible_rp_width        = %d\n", amesa->visible_rp_width));
 148     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->visible_rp_height       = %d\n", amesa->visible_rp_height));
 149     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->left                    = %d\n", amesa->left));
 150     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->right                   = %d\n", amesa->right));
 151     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->top                     = %d\n", amesa->top));
 152     D(bug("[AROSMESA] AROSMesaStandardInit:    amesa->bottom                  = %d\n", amesa->bottom));
 153
 154     return TRUE;
 155 }
 156
 157 VOID AROSMesaRecalculateBufferWidthHeight(struct arosmesa_context * amesa)
 158 {
 159     ULONG newwidth = 0;
 160     ULONG newheight = 0;
 161
 162     D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight\n"));
 163
 164
 165     amesa->visible_rp_width =
 166         amesa->visible_rp->Layer->bounds.MaxX - amesa->visible_rp->Layer->bounds.MinX + 1;
 167
 168     amesa->visible_rp_height =
 169         amesa->visible_rp->Layer->bounds.MaxY - amesa->visible_rp->Layer->bounds.MinY + 1;
 170
 171
 172     newwidth = amesa->visible_rp_width - amesa->left - amesa->right;
 173     newheight = amesa->visible_rp_height - amesa->top - amesa->bottom;
 174
 175     if (newwidth < 0) newwidth = 0;
 176     if (newheight < 0) newheight = 0;
 177
 178
 179     if ((newwidth != amesa->framebuffer->width) || (newheight != amesa->framebuffer->height))
 180     {
 181         /* The drawing area size has changed. Buffer must change */
 182         D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight: current height    =   %d\n", amesa->framebuffer->height));
 183         D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight: current width     =   %d\n", amesa->framebuffer->width));
 184         D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight: new height        =   %d\n", newheight));
 185         D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight: new width         =   %d\n", newwidth));
 186
 187         amesa->framebuffer->width = newwidth;
 188         amesa->framebuffer->height = newheight;
 189         amesa->framebuffer->resized = TRUE;
 190
 191         if (amesa->window)
 192         {
 193             struct Rectangle rastcliprect;
 194             struct TagItem crptags[] =
 195             {
 196                 { RPTAG_ClipRectangle      , (IPTR)&rastcliprect },
 197                 { RPTAG_ClipRectangleFlags , (RPCRF_RELRIGHT | RPCRF_RELBOTTOM) },
 198                 { TAG_DONE }
 199             };
 200
 201             D(bug("[AROSMESA] AROSMesaRecalculateBufferWidthHeight: Clipping Rastport to Window's dimensions\n"));
 202
 203             /* Clip the rastport to the visible area */
 204             rastcliprect.MinX = amesa->left;
 205             rastcliprect.MinY = amesa->top;
 206             rastcliprect.MaxX = amesa->left + amesa->framebuffer->width;
 207             rastcliprect.MaxY = amesa->top + amesa->framebuffer->height;
 208             SetRPAttrsA(amesa->visible_rp, crptags);
 209         }
 210     }
 211 }
 212
 213 VOID AROSMesaFreeContext(struct arosmesa_context * amesa)
 214 {
 215     if (amesa)
 216     {
 217         FreeVec(amesa);
 218     }
 219 }