src/mesa/drivers/dri/r300/radeon_context.c

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /**
  31  * \file radeon_context.c
  32  * Common context initialization.
  33  *
  34  * \author Keith Whitwell <keith@tungstengraphics.com>
  35  */
  36
  37 #include <dlfcn.h>
  38
  39 #include "glheader.h"
  40 #include "imports.h"
  41 #include "context.h"
  42 #include "state.h"
  43 #include "matrix.h"
  44 #include "framebuffer.h"
  45
  46 #include "drivers/common/driverfuncs.h"
  47 #include "swrast/swrast.h"
  48
  49 #include "radeon_screen.h"
  50 #include "radeon_ioctl.h"
  51 #include "radeon_macros.h"
  52 #include "radeon_reg.h"
  53
  54 #include "radeon_state.h"
  55 #include "r300_state.h"
  56
  57 #include "utils.h"
  58 #include "vblank.h"
  59 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  60
  61 #define DRIVER_DATE "20060815"
  62
  63
  64 /* Return various strings for glGetString().
  65  */
  66 static const GLubyte *radeonGetString(GLcontext * ctx, GLenum name)
  67 {
  68         radeonContextPtr radeon = RADEON_CONTEXT(ctx);
  69         static char buffer[128];
  70
  71         switch (name) {
  72         case GL_VENDOR:
  73                 if (IS_R300_CLASS(radeon->radeonScreen))
  74                         return (GLubyte *) "DRI R300 Project";
  75                 else
  76                         return (GLubyte *) "Tungsten Graphics, Inc.";
  77
  78         case GL_RENDERER:
  79         {
  80                 unsigned offset;
  81                 GLuint agp_mode = (radeon->radeonScreen->card_type==RADEON_CARD_PCI) ? 0 :
  82                         radeon->radeonScreen->AGPMode;
  83                 const char* chipname;
  84
  85                 if (IS_R300_CLASS(radeon->radeonScreen))
  86                         chipname = "R300";
  87                 else
  88                         chipname = "R200";
  89
  90                 offset = driGetRendererString(buffer, chipname, DRIVER_DATE,
  91                                               agp_mode);
  92
  93                 if (IS_R300_CLASS(radeon->radeonScreen)) {
  94                 sprintf(&buffer[offset], " %sTCL",
  95                         (radeon->radeonScreen->chip_flags & RADEON_CHIPSET_TCL)
  96                         ? "" : "NO-");
  97                 } else {
  98                         sprintf(&buffer[offset], " %sTCL",
  99                         !(radeon->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)
 100                         ? "" : "NO-");
 101                 }
 102
 103                 return (GLubyte *) buffer;
 104         }
 105
 106         default:
 107                 return NULL;
 108         }
 109 }
 110
 111 /* Initialize the driver's misc functions.
 112  */
 113 static void radeonInitDriverFuncs(struct dd_function_table *functions)
 114 {
 115         functions->GetString = radeonGetString;
 116 }
 117
 118
 119 /**
 120  * Create and initialize all common fields of the context,
 121  * including the Mesa context itself.
 122  */
 123 GLboolean radeonInitContext(radeonContextPtr radeon,
 124                             struct dd_function_table* functions,
 125                             const __GLcontextModes * glVisual,
 126                             __DRIcontextPrivate * driContextPriv,
 127                             void *sharedContextPrivate)
 128 {
 129         __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 130         radeonScreenPtr screen = (radeonScreenPtr) (sPriv->private);
 131         GLcontext* ctx;
 132         GLcontext* shareCtx;
 133         int fthrottle_mode;
 134
 135         /* Fill in additional standard functions. */
 136         radeonInitDriverFuncs(functions);
 137
 138         /* Allocate and initialize the Mesa context */
 139         if (sharedContextPrivate)
 140                 shareCtx = ((radeonContextPtr)sharedContextPrivate)->glCtx;
 141         else
 142                 shareCtx = NULL;
 143         radeon->glCtx = _mesa_create_context(glVisual, shareCtx,
 144                                             functions, (void *)radeon);
 145         if (!radeon->glCtx)
 146                 return GL_FALSE;
 147
 148         ctx = radeon->glCtx;
 149         driContextPriv->driverPrivate = radeon;
 150
 151         /* DRI fields */
 152         radeon->dri.context = driContextPriv;
 153         radeon->dri.screen = sPriv;
 154         radeon->dri.drawable = NULL;
 155         radeon->dri.readable = NULL;
 156         radeon->dri.hwContext = driContextPriv->hHWContext;
 157         radeon->dri.hwLock = &sPriv->pSAREA->lock;
 158         radeon->dri.fd = sPriv->fd;
 159         radeon->dri.drmMinor = sPriv->drmMinor;
 160
 161         radeon->radeonScreen = screen;
 162         radeon->sarea = (drm_radeon_sarea_t *) ((GLubyte *) sPriv->pSAREA +
 163                                                screen->sarea_priv_offset);
 164
 165         /* Setup IRQs */
 166         fthrottle_mode = driQueryOptioni(&radeon->optionCache, "fthrottle_mode");
 167         radeon->iw.irq_seq = -1;
 168         radeon->irqsEmitted = 0;
 169         radeon->do_irqs = (fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS &&
 170                           radeon->radeonScreen->irq);
 171
 172         radeon->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 173
 174         if (!radeon->do_irqs)
 175                 fprintf(stderr,
 176                         "IRQ's not enabled, falling back to %s: %d %d\n",
 177                         radeon->do_usleeps ? "usleeps" : "busy waits",
 178                         fthrottle_mode, radeon->radeonScreen->irq);
 179
 180         radeon->vblank_flags = (radeon->radeonScreen->irq != 0)
 181             ? driGetDefaultVBlankFlags(&radeon->optionCache) : VBLANK_FLAG_NO_IRQ;
 182
 183         (*dri_interface->getUST) (&radeon->swap_ust);
 184
 185         return GL_TRUE;
 186 }
 187
 188
 189 /**
 190  * Cleanup common context fields.
 191  * Called by r200DestroyContext/r300DestroyContext
 192  */
 193 void radeonCleanupContext(radeonContextPtr radeon)
 194 {
 195         /* _mesa_destroy_context() might result in calls to functions that
 196          * depend on the DriverCtx, so don't set it to NULL before.
 197          *
 198          * radeon->glCtx->DriverCtx = NULL;
 199          */
 200
 201         /* free the Mesa context */
 202         _mesa_destroy_context(radeon->glCtx);
 203
 204         if (radeon->state.scissor.pClipRects) {
 205                 FREE(radeon->state.scissor.pClipRects);
 206                 radeon->state.scissor.pClipRects = 0;
 207         }
 208 }
 209
 210
 211 /**
 212  * Swap front and back buffer.
 213  */
 214 void radeonSwapBuffers(__DRIdrawablePrivate * dPriv)
 215 {
 216         if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 217                 radeonContextPtr radeon;
 218                 GLcontext *ctx;
 219
 220                 radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 221                 ctx = radeon->glCtx;
 222
 223                 if (ctx->Visual.doubleBufferMode) {
 224                         _mesa_notifySwapBuffers(ctx);   /* flush pending rendering comands */
 225                         if (radeon->doPageFlip) {
 226                                 radeonPageFlip(dPriv);
 227                         } else {
 228                             radeonCopyBuffer(dPriv, NULL);
 229                         }
 230                 }
 231         } else {
 232                 /* XXX this shouldn't be an error but we can't handle it for now */
 233                 _mesa_problem(NULL, "%s: drawable has no context!",
 234                               __FUNCTION__);
 235         }
 236 }
 237
 238 void radeonCopySubBuffer(__DRIdrawablePrivate * dPriv,
 239                          int x, int y, int w, int h )
 240 {
 241     if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 242         radeonContextPtr radeon;
 243         GLcontext *ctx;
 244
 245         radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 246         ctx = radeon->glCtx;
 247
 248         if (ctx->Visual.doubleBufferMode) {
 249             drm_clip_rect_t rect;
 250             rect.x1 = x + dPriv->x;
 251             rect.y1 = (dPriv->h - y - h) + dPriv->y;
 252             rect.x2 = rect.x1 + w;
 253             rect.y2 = rect.y1 + h;
 254             _mesa_notifySwapBuffers(ctx);       /* flush pending rendering comands */
 255             radeonCopyBuffer(dPriv, &rect);
 256         }
 257     } else {
 258         /* XXX this shouldn't be an error but we can't handle it for now */
 259         _mesa_problem(NULL, "%s: drawable has no context!",
 260                       __FUNCTION__);
 261     }
 262 }
 263
 264 /* Force the context `c' to be the current context and associate with it
 265  * buffer `b'.
 266  */
 267 GLboolean radeonMakeCurrent(__DRIcontextPrivate * driContextPriv,
 268                             __DRIdrawablePrivate * driDrawPriv,
 269                             __DRIdrawablePrivate * driReadPriv)
 270 {
 271         if (driContextPriv) {
 272                 radeonContextPtr radeon =
 273                         (radeonContextPtr) driContextPriv->driverPrivate;
 274
 275                 if (RADEON_DEBUG & DEBUG_DRI)
 276                         fprintf(stderr, "%s ctx %p\n", __FUNCTION__,
 277                                 radeon->glCtx);
 278
 279                 if (radeon->dri.drawable != driDrawPriv) {
 280                         driDrawableInitVBlank(driDrawPriv,
 281                                               radeon->vblank_flags,
 282                                               &radeon->vbl_seq);
 283                 }
 284
 285                 radeon->dri.readable = driReadPriv;
 286
 287                 if (radeon->dri.drawable != driDrawPriv ||
 288                     radeon->lastStamp != driDrawPriv->lastStamp) {
 289                         radeon->dri.drawable = driDrawPriv;
 290
 291                         radeonSetCliprects(radeon);
 292                         r300UpdateViewportOffset(radeon->glCtx);
 293                 }
 294
 295                 _mesa_make_current(radeon->glCtx,
 296                                     (GLframebuffer *) driDrawPriv->
 297                                     driverPrivate,
 298                                     (GLframebuffer *) driReadPriv->
 299                                     driverPrivate);
 300
 301                 _mesa_update_state(radeon->glCtx);
 302
 303                 radeonUpdatePageFlipping(radeon);
 304         } else {
 305                 if (RADEON_DEBUG & DEBUG_DRI)
 306                         fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 307                 _mesa_make_current(0, 0, 0);
 308         }
 309
 310         if (RADEON_DEBUG & DEBUG_DRI)
 311                 fprintf(stderr, "End %s\n", __FUNCTION__);
 312         return GL_TRUE;
 313 }
 314
 315 /* Force the context `c' to be unbound from its buffer.
 316  */
 317 GLboolean radeonUnbindContext(__DRIcontextPrivate * driContextPriv)
 318 {
 319         radeonContextPtr radeon = (radeonContextPtr) driContextPriv->driverPrivate;
 320
 321         if (RADEON_DEBUG & DEBUG_DRI)
 322                 fprintf(stderr, "%s ctx %p\n", __FUNCTION__,
 323                         radeon->glCtx);
 324
 325         return GL_TRUE;
 326 }
 327