intel_screen.c

mesa-6.5-minigui源码

/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#include "glheader.h"
#include "context.h"
#include "framebuffer.h"
#include "matrix.h"
#include "renderbuffer.h"
#include "simple_list.h"
#include "utils.h"
#include "vblank.h"
#include "xmlpool.h"


#include "intel_screen.h"

#include "intel_tex.h"
#include "intel_span.h"
#include "intel_tris.h"
#include "intel_ioctl.h"

#include "i830_dri.h"

PUBLIC const char __driConfigOptions[] =
DRI_CONF_BEGIN
    DRI_CONF_SECTION_PERFORMANCE
       DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS) 
       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
    DRI_CONF_SECTION_END
    DRI_CONF_SECTION_QUALITY
       DRI_CONF_FORCE_S3TC_ENABLE(false)
       DRI_CONF_ALLOW_LARGE_TEXTURES(1)
      DRI_CONF_SECTION_END
DRI_CONF_END;
const GLuint __driNConfigOptions = 4;

#ifdef USE_NEW_INTERFACE
static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
#endif /*USE_NEW_INTERFACE*/

extern const struct dri_extension card_extensions[];

/**
 * Map all the memory regions described by the screen.
 * \return GL_TRUE if success, GL_FALSE if error.
 */
GLboolean
intelMapScreenRegions(__DRIscreenPrivate *sPriv)
{
   intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;

   if (intelScreen->front.handle) {
      if (drmMap(sPriv->fd,
                 intelScreen->front.handle,
                 intelScreen->front.size,
                 (drmAddress *)&intelScreen->front.map) != 0) {
         _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
         return GL_FALSE;
      }
   }
   else {
      _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
   }

   if (drmMap(sPriv->fd,
              intelScreen->back.handle,
              intelScreen->back.size,
              (drmAddress *)&intelScreen->back.map) != 0) {
      intelUnmapScreenRegions(intelScreen);
      return GL_FALSE;
   }

   if (drmMap(sPriv->fd,
              intelScreen->depth.handle,
              intelScreen->depth.size,
              (drmAddress *)&intelScreen->depth.map) != 0) {
      intelUnmapScreenRegions(intelScreen);
      return GL_FALSE;
   }

   if (drmMap(sPriv->fd,
              intelScreen->tex.handle,
              intelScreen->tex.size,
              (drmAddress *)&intelScreen->tex.map) != 0) {
      intelUnmapScreenRegions(intelScreen);
      return GL_FALSE;
   }

   if (0)
      printf("Mappings:  front: %p  back: %p  depth: %p  tex: %p\n",
          intelScreen->front.map,
          intelScreen->back.map,
          intelScreen->depth.map,
          intelScreen->tex.map);
   return GL_TRUE;
}


void
intelUnmapScreenRegions(intelScreenPrivate *intelScreen)
{
#define REALLY_UNMAP 1
   if (intelScreen->front.map) {
#if REALLY_UNMAP
      if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
         printf("drmUnmap front failed!\n");
#endif
      intelScreen->front.map = NULL;
   }
   if (intelScreen->back.map) {
#if REALLY_UNMAP
      if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
         printf("drmUnmap back failed!\n");
#endif
      intelScreen->back.map = NULL;
   }
   if (intelScreen->depth.map) {
#if REALLY_UNMAP
      drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
      intelScreen->depth.map = NULL;
#endif
   }
   if (intelScreen->tex.map) {
#if REALLY_UNMAP
      drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
      intelScreen->tex.map = NULL;
#endif
   }
}


static void
intelPrintDRIInfo(intelScreenPrivate *intelScreen,
                  __DRIscreenPrivate *sPriv,
                  I830DRIPtr gDRIPriv)
{
   fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
           intelScreen->front.size, intelScreen->front.offset,
           intelScreen->front.pitch);
   fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
           intelScreen->back.size, intelScreen->back.offset,
           intelScreen->back.pitch);
   fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
           intelScreen->depth.size, intelScreen->depth.offset,
           intelScreen->depth.pitch);
   fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
           intelScreen->rotated.size, intelScreen->rotated.offset,
           intelScreen->rotated.pitch);
   fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
           intelScreen->tex.size, intelScreen->tex.offset);
   fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
}


static void
intelPrintSAREA(const drmI830Sarea *sarea)
{
   fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width, sarea->height);
   fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
   fprintf(stderr,
           "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
           sarea->front_offset, sarea->front_size,
           (unsigned) sarea->front_handle);
   fprintf(stderr,
           "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
           sarea->back_offset, sarea->back_size,
           (unsigned) sarea->back_handle);
   fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
           sarea->depth_offset, sarea->depth_size,
           (unsigned) sarea->depth_handle);
   fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
           sarea->tex_offset, sarea->tex_size,
           (unsigned) sarea->tex_handle);
   fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
   fprintf(stderr,
           "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
           sarea->rotated_offset, sarea->rotated_size);
   fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
}


/**
 * A number of the screen parameters are obtained/computed from
 * information in the SAREA.  This function updates those parameters.
 */
void
intelUpdateScreenFromSAREA(intelScreenPrivate *intelScreen,
                           drmI830Sarea *sarea)
{
   intelScreen->width = sarea->width;
   intelScreen->height = sarea->height;

   intelScreen->front.offset = sarea->front_offset;
   intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
   intelScreen->front.handle = sarea->front_handle;
   intelScreen->front.size = sarea->front_size;

   intelScreen->back.offset = sarea->back_offset;
   intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
   intelScreen->back.handle = sarea->back_handle;
   intelScreen->back.size = sarea->back_size;
			 
   intelScreen->depth.offset = sarea->depth_offset;
   intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
   intelScreen->depth.handle = sarea->depth_handle;
   intelScreen->depth.size = sarea->depth_size;

   intelScreen->tex.offset = sarea->tex_offset;
   intelScreen->logTextureGranularity = sarea->log_tex_granularity;
   intelScreen->tex.handle = sarea->tex_handle;
   intelScreen->tex.size = sarea->tex_size;

   intelScreen->rotated.offset = sarea->rotated_offset;
   intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
   intelScreen->rotated.size = sarea->rotated_size;
   intelScreen->current_rotation = sarea->rotation;
   matrix23Rotate(&intelScreen->rotMatrix,
                  sarea->width, sarea->height, sarea->rotation);
   intelScreen->rotatedWidth = sarea->virtualX;
   intelScreen->rotatedHeight = sarea->virtualY;

   if (0)
      intelPrintSAREA(sarea);
}


static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
{
   intelScreenPrivate *intelScreen;
   I830DRIPtr         gDRIPriv = (I830DRIPtr)sPriv->pDevPriv;
   drmI830Sarea *sarea;
   PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
     (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
   void * const psc = sPriv->psc->screenConfigs;

   if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
      fprintf(stderr,"\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
      return GL_FALSE;
   }

   /* Allocate the private area */
   intelScreen = (intelScreenPrivate *)CALLOC(sizeof(intelScreenPrivate));
   if (!intelScreen) {
      fprintf(stderr,"\nERROR!  Allocating private area failed\n");
      return GL_FALSE;
   }
   /* parse information in __driConfigOptions */
   driParseOptionInfo (&intelScreen->optionCache,
		       __driConfigOptions, __driNConfigOptions);

   intelScreen->driScrnPriv = sPriv;
   sPriv->private = (void *)intelScreen;
   intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
   sarea = (drmI830Sarea *)
         (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);

   intelScreen->deviceID = gDRIPriv->deviceID;
   intelScreen->mem = gDRIPriv->mem;
   intelScreen->cpp = gDRIPriv->cpp;

   switch (gDRIPriv->bitsPerPixel) {
   case 15: intelScreen->fbFormat = DV_PF_555; break;
   case 16: intelScreen->fbFormat = DV_PF_565; break;
   case 32: intelScreen->fbFormat = DV_PF_8888; break;
   }
			 
   intelUpdateScreenFromSAREA(intelScreen, sarea);

   if (0)
      intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);

   if (!intelMapScreenRegions(sPriv)) {
      fprintf(stderr,"\nERROR!  mapping regions\n");
      _mesa_free(intelScreen);
      sPriv->private = NULL;
      return GL_FALSE;
   }

   intelScreen->drmMinor = sPriv->drmMinor;

   /* Determine if IRQs are active? */
   {
      int ret;
      drmI830GetParam gp;

      gp.param = I830_PARAM_IRQ_ACTIVE;
      gp.value = &intelScreen->irq_active;

      ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
				 &gp, sizeof(gp));
      if (ret) {
	 fprintf(stderr, "drmI830GetParam: %d\n", ret);
	 return GL_FALSE;
      }
   }

   /* Determine if batchbuffers are allowed */
   {
      int ret;
      drmI830GetParam gp;

      gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
      gp.value = &intelScreen->allow_batchbuffer;

      ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
				 &gp, sizeof(gp));
      if (ret) {
	 fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
	 return GL_FALSE;
      }
   }

   if (glx_enable_extension != NULL) {
      (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
      (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
      (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
      (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
      (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );