src/parsec/disk-image/parsec/parsec-benchmark/pkgs/libs/mesa/src/src/mesa/drivers/dri/i810/i810screen.c - public/gem5-resources - Git at Google

 /**************************************************************************

 Copyright 1998-1999 Precision Insight, 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 PRECISION INSIGHT 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.

 **************************************************************************/
 /* $XFree86: xc/lib/GL/mesa/src/drv/i810/i810screen.c,v 1.2 2002/10/30 12:51:33 alanh Exp $ */

 /*
  * Authors:
  *   Keith Whitwell <keith@tungstengraphics.com>
  *
  */


 #include "glheader.h"
 #include "imports.h"
 #include "context.h"
 #include "framebuffer.h"
 #include "fbobject.h"
 #include "matrix.h"
 #include "renderbuffer.h"
 #include "simple_list.h"
 #include "utils.h"

 #include "i810screen.h"
 #include "i810_dri.h"

 #include "i810state.h"
 #include "i810tex.h"
 #include "i810span.h"
 #include "i810tris.h"
 #include "i810ioctl.h"

 #include "GL/internal/dri_interface.h"

 extern const struct dri_extension card_extensions[];

 static const __DRIconfig **
 i810FillInModes( __DRIscreenPrivate *psp,
 		 unsigned pixel_bits, unsigned depth_bits,
 		 unsigned stencil_bits, GLboolean have_back_buffer )
 {
     __DRIconfig **configs;
     __GLcontextModes * m;
     unsigned depth_buffer_factor;
     unsigned back_buffer_factor;
     unsigned i;

     /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
      * enough to add support.  Basically, if a context is created with an
      * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
      * will never be used.
      */
     static const GLenum back_buffer_modes[] = {
 	GLX_NONE, GLX_SWAP_UNDEFINED_OML /*, GLX_SWAP_COPY_OML */
     };

     u_int8_t depth_bits_array[2];
     u_int8_t stencil_bits_array[2];

     depth_bits_array[0] = depth_bits;
     depth_bits_array[1] = depth_bits;

     /* Just like with the accumulation buffer, always provide some modes
      * with a stencil buffer.  It will be a sw fallback, but some apps won't
      * care about that.
      */
     stencil_bits_array[0] = 0;
     stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;

     depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
     back_buffer_factor  = (have_back_buffer) ? 2 : 1;

     configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
 			       depth_bits_array, stencil_bits_array,
 			       depth_buffer_factor,
 			       back_buffer_modes, back_buffer_factor);
     if (configs == NULL) {
 	fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 		 __func__, __LINE__ );
 	return NULL;
     }

     /* Mark the visual as slow if there are "fake" stencil bits.
      */
     for (i = 0; configs[i]; i++) {
 	m = &configs[i]->modes;
 	if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 	    m->visualRating = GLX_SLOW_CONFIG;
 	}
     }

     return (const __DRIconfig **) configs;
 }


 /*  static int i810_malloc_proxy_buf(drmBufMapPtr buffers) */
 /*  { */
 /*     char *buffer; */
 /*     drmBufPtr buf; */
 /*     int i; */

 /*     buffer = CALLOC(I810_DMA_BUF_SZ); */
 /*     if(buffer == NULL) return -1; */
 /*     for(i = 0; i < I810_DMA_BUF_NR; i++) { */
 /*        buf = &(buffers->list[i]); */
 /*        buf->address = (drmAddress)buffer; */
 /*     } */
 /*     return 0; */
 /*  } */

 static drmBufMapPtr i810_create_empty_buffers(void)
 {
    drmBufMapPtr retval;

    retval = (drmBufMapPtr)ALIGN_MALLOC(sizeof(drmBufMap), 32);
    if(retval == NULL) return NULL;
    memset(retval, 0, sizeof(drmBufMap));
    retval->list = (drmBufPtr)ALIGN_MALLOC(sizeof(drmBuf) * I810_DMA_BUF_NR, 32);
    if(retval->list == NULL) {
       ALIGN_FREE(retval);
       return NULL;
    }
    memset(retval->list, 0, sizeof(drmBuf) * I810_DMA_BUF_NR);
    return retval;
 }


 static const __DRIconfig **
 i810InitScreen(__DRIscreen *sPriv)
 {
    static const __DRIversion ddx_expected = { 1, 0, 0 };
    static const __DRIversion dri_expected = { 4, 0, 0 };
    static const __DRIversion drm_expected = { 1, 2, 0 };
    i810ScreenPrivate *i810Screen;
    I810DRIPtr         gDRIPriv = (I810DRIPtr)sPriv->pDevPriv;

    if ( ! driCheckDriDdxDrmVersions2( "i810",
 				      &sPriv->dri_version, & dri_expected,
 				      &sPriv->ddx_version, & ddx_expected,
 				      &sPriv->drm_version, & drm_expected ) ) {
       return NULL;
    }

    driInitExtensions( NULL, card_extensions, GL_TRUE );

    if (sPriv->devPrivSize != sizeof(I810DRIRec)) {
       fprintf(stderr,"\nERROR!  sizeof(I810DRIRec) does not match passed size from device driver\n");
       return GL_FALSE;
    }

    /* Allocate the private area */
    i810Screen = (i810ScreenPrivate *)CALLOC(sizeof(i810ScreenPrivate));
    if (!i810Screen) {
       __driUtilMessage("i810InitDriver: alloc i810ScreenPrivate struct failed");
       return GL_FALSE;
    }

    i810Screen->driScrnPriv = sPriv;
    sPriv->private = (void *)i810Screen;

    i810Screen->deviceID=gDRIPriv->deviceID;
    i810Screen->width=gDRIPriv->width;
    i810Screen->height=gDRIPriv->height;
    i810Screen->mem=gDRIPriv->mem;
    i810Screen->cpp=gDRIPriv->cpp;
    i810Screen->fbStride=gDRIPriv->fbStride;
    i810Screen->fbOffset=gDRIPriv->fbOffset;

    if (gDRIPriv->bitsPerPixel == 15)
       i810Screen->fbFormat = DV_PF_555;
    else
       i810Screen->fbFormat = DV_PF_565;

    i810Screen->backOffset=gDRIPriv->backOffset;
    i810Screen->depthOffset=gDRIPriv->depthOffset;
    i810Screen->backPitch = gDRIPriv->auxPitch;
    i810Screen->backPitchBits = gDRIPriv->auxPitchBits;
    i810Screen->textureOffset=gDRIPriv->textureOffset;
    i810Screen->textureSize=gDRIPriv->textureSize;
    i810Screen->logTextureGranularity = gDRIPriv->logTextureGranularity;

    i810Screen->bufs = i810_create_empty_buffers();
    if (i810Screen->bufs == NULL) {
       __driUtilMessage("i810InitDriver: i810_create_empty_buffers() failed");
       FREE(i810Screen);
       return GL_FALSE;
    }

    i810Screen->back.handle = gDRIPriv->backbuffer;
    i810Screen->back.size = gDRIPriv->backbufferSize;

    if (drmMap(sPriv->fd,
 	      i810Screen->back.handle,
 	      i810Screen->back.size,
 	      (drmAddress *)&i810Screen->back.map) != 0) {
       FREE(i810Screen);
       sPriv->private = NULL;
       __driUtilMessage("i810InitDriver: drmMap failed");
       return GL_FALSE;
    }

    i810Screen->depth.handle = gDRIPriv->depthbuffer;
    i810Screen->depth.size = gDRIPriv->depthbufferSize;

    if (drmMap(sPriv->fd,
 	      i810Screen->depth.handle,
 	      i810Screen->depth.size,
 	      (drmAddress *)&i810Screen->depth.map) != 0) {
       drmUnmap(i810Screen->back.map, i810Screen->back.size);
       FREE(i810Screen);
       sPriv->private = NULL;
       __driUtilMessage("i810InitDriver: drmMap (2) failed");
       return GL_FALSE;
    }

    i810Screen->tex.handle = gDRIPriv->textures;
    i810Screen->tex.size = gDRIPriv->textureSize;

    if (drmMap(sPriv->fd,
 	      i810Screen->tex.handle,
 	      i810Screen->tex.size,
 	      (drmAddress *)&i810Screen->tex.map) != 0) {
       drmUnmap(i810Screen->back.map, i810Screen->back.size);
       drmUnmap(i810Screen->depth.map, i810Screen->depth.size);
       FREE(i810Screen);
       sPriv->private = NULL;
       __driUtilMessage("i810InitDriver: drmMap (3) failed");
       return GL_FALSE;
    }

    i810Screen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;

    return i810FillInModes(sPriv, 16, 16, 0, 1);
 }

 static void
 i810DestroyScreen(__DRIscreenPrivate *sPriv)
 {
    i810ScreenPrivate *i810Screen = (i810ScreenPrivate *)sPriv->private;

    /* Need to unmap all the bufs and maps here:
     */
    drmUnmap(i810Screen->back.map, i810Screen->back.size);
    drmUnmap(i810Screen->depth.map, i810Screen->depth.size);
    drmUnmap(i810Screen->tex.map, i810Screen->tex.size);

    FREE(i810Screen);
    sPriv->private = NULL;
 }


 /**
  * Create a buffer which corresponds to the window.
  */
 static GLboolean
 i810CreateBuffer( __DRIscreenPrivate *driScrnPriv,
                   __DRIdrawablePrivate *driDrawPriv,
                   const __GLcontextModes *mesaVis,
                   GLboolean isPixmap )
 {
    i810ScreenPrivate *screen = (i810ScreenPrivate *) driScrnPriv->private;

    if (isPixmap) {
       return GL_FALSE; /* not implemented */
    }
    else {
       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);

       {
          driRenderbuffer *frontRb
             = driNewRenderbuffer(GL_RGBA,
                                  driScrnPriv->pFB,
                                  screen->cpp,
                                  /*screen->frontOffset*/0, screen->backPitch,
                                  driDrawPriv);
          i810SetSpanFunctions(frontRb, mesaVis);
          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
       }

       if (mesaVis->doubleBufferMode) {
          driRenderbuffer *backRb
             = driNewRenderbuffer(GL_RGBA,
                                  screen->back.map,
                                  screen->cpp,
                                  screen->backOffset, screen->backPitch,
                                  driDrawPriv);
          i810SetSpanFunctions(backRb, mesaVis);
          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
       }

       if (mesaVis->depthBits == 16) {
          driRenderbuffer *depthRb
             = driNewRenderbuffer(GL_DEPTH_COMPONENT16,
                                  screen->depth.map,
                                  screen->cpp,
                                  screen->depthOffset, screen->backPitch,
                                  driDrawPriv);
          i810SetSpanFunctions(depthRb, mesaVis);
          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
       }

       _mesa_add_soft_renderbuffers(fb,
                                    GL_FALSE, /* color */
                                    GL_FALSE, /* depth */
                                    mesaVis->stencilBits > 0,
                                    mesaVis->accumRedBits > 0,
                                    GL_FALSE, /* alpha */
                                    GL_FALSE /* aux */);
       driDrawPriv->driverPrivate = (void *) fb;

       return (driDrawPriv->driverPrivate != NULL);
    }
 }


 static void
 i810DestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 {
     _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 }

 const struct __DriverAPIRec driDriverAPI = {
    .InitScreen      = i810InitScreen,
    .DestroyScreen   = i810DestroyScreen,
    .CreateContext   = i810CreateContext,
    .DestroyContext  = i810DestroyContext,
    .CreateBuffer    = i810CreateBuffer,
    .DestroyBuffer   = i810DestroyBuffer,
    .SwapBuffers     = i810SwapBuffers,
    .MakeCurrent     = i810MakeCurrent,
    .UnbindContext   = i810UnbindContext,
    .GetSwapInfo     = NULL,
    .GetDrawableMSC  = NULL,
    .WaitForMSC      = NULL,
    .WaitForSBC      = NULL,
    .SwapBuffersMSC  = NULL
 };
	/**************************************************************************

	Copyright 1998-1999 Precision Insight, 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 PRECISION INSIGHT 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.

	**************************************************************************/
	/* $XFree86: xc/lib/GL/mesa/src/drv/i810/i810screen.c,v 1.2 2002/10/30 12:51:33 alanh Exp $ */

	/*
	* Authors:
	* Keith Whitwell <keith@tungstengraphics.com>
	*
	*/


	#include "glheader.h"
	#include "imports.h"
	#include "context.h"
	#include "framebuffer.h"
	#include "fbobject.h"
	#include "matrix.h"
	#include "renderbuffer.h"
	#include "simple_list.h"
	#include "utils.h"

	#include "i810screen.h"
	#include "i810_dri.h"

	#include "i810state.h"
	#include "i810tex.h"
	#include "i810span.h"
	#include "i810tris.h"
	#include "i810ioctl.h"

	#include "GL/internal/dri_interface.h"

	extern const struct dri_extension card_extensions[];

	static const __DRIconfig **
	i810FillInModes( __DRIscreenPrivate *psp,
	unsigned pixel_bits, unsigned depth_bits,
	unsigned stencil_bits, GLboolean have_back_buffer )
	{
	__DRIconfig **configs;
	__GLcontextModes * m;
	unsigned depth_buffer_factor;
	unsigned back_buffer_factor;
	unsigned i;

	/* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
	* enough to add support. Basically, if a context is created with an
	* fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
	* will never be used.
	*/
	static const GLenum back_buffer_modes[] = {
	GLX_NONE, GLX_SWAP_UNDEFINED_OML /, GLX_SWAP_COPY_OML /
	};

	u_int8_t depth_bits_array[2];
	u_int8_t stencil_bits_array[2];

	depth_bits_array[0] = depth_bits;
	depth_bits_array[1] = depth_bits;

	/* Just like with the accumulation buffer, always provide some modes
	* with a stencil buffer. It will be a sw fallback, but some apps won't
	* care about that.
	*/
	stencil_bits_array[0] = 0;
	stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;

	depth_buffer_factor = ((depth_bits != 0) \|\| (stencil_bits != 0)) ? 2 : 1;
	back_buffer_factor = (have_back_buffer) ? 2 : 1;

	configs = driCreateConfigs(GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
	depth_bits_array, stencil_bits_array,
	depth_buffer_factor,
	back_buffer_modes, back_buffer_factor);
	if (configs == NULL) {
	fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
	__func__, __LINE__ );
	return NULL;
	}

	/* Mark the visual as slow if there are "fake" stencil bits.
	*/
	for (i = 0; configs[i]; i++) {
	m = &configs[i]->modes;
	if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
	m->visualRating = GLX_SLOW_CONFIG;
	}
	}

	return (const __DRIconfig **) configs;
	}


	/* static int i810_malloc_proxy_buf(drmBufMapPtr buffers) */
	/* { */
	/* char buffer; /
	/* drmBufPtr buf; */
	/* int i; */

	/* buffer = CALLOC(I810_DMA_BUF_SZ); */
	/* if(buffer == NULL) return -1; */
	/* for(i = 0; i < I810_DMA_BUF_NR; i++) { */
	/* buf = &(buffers->list[i]); */
	/* buf->address = (drmAddress)buffer; */
	/* } */
	/* return 0; */
	/* } */

	static drmBufMapPtr i810_create_empty_buffers(void)
	{
	drmBufMapPtr retval;

	retval = (drmBufMapPtr)ALIGN_MALLOC(sizeof(drmBufMap), 32);
	if(retval == NULL) return NULL;
	memset(retval, 0, sizeof(drmBufMap));
	retval->list = (drmBufPtr)ALIGN_MALLOC(sizeof(drmBuf) * I810_DMA_BUF_NR, 32);
	if(retval->list == NULL) {
	ALIGN_FREE(retval);
	return NULL;
	}
	memset(retval->list, 0, sizeof(drmBuf) * I810_DMA_BUF_NR);
	return retval;
	}


	static const __DRIconfig **
	i810InitScreen(__DRIscreen *sPriv)
	{
	static const __DRIversion ddx_expected = { 1, 0, 0 };
	static const __DRIversion dri_expected = { 4, 0, 0 };
	static const __DRIversion drm_expected = { 1, 2, 0 };
	i810ScreenPrivate *i810Screen;
	I810DRIPtr gDRIPriv = (I810DRIPtr)sPriv->pDevPriv;

	if ( ! driCheckDriDdxDrmVersions2( "i810",
	&sPriv->dri_version, & dri_expected,
	&sPriv->ddx_version, & ddx_expected,
	&sPriv->drm_version, & drm_expected ) ) {
	return NULL;
	}

	driInitExtensions( NULL, card_extensions, GL_TRUE );

	if (sPriv->devPrivSize != sizeof(I810DRIRec)) {
	fprintf(stderr,"\nERROR! sizeof(I810DRIRec) does not match passed size from device driver\n");
	return GL_FALSE;
	}

	/* Allocate the private area */
	i810Screen = (i810ScreenPrivate *)CALLOC(sizeof(i810ScreenPrivate));
	if (!i810Screen) {
	__driUtilMessage("i810InitDriver: alloc i810ScreenPrivate struct failed");
	return GL_FALSE;
	}

	i810Screen->driScrnPriv = sPriv;
	sPriv->private = (void *)i810Screen;

	i810Screen->deviceID=gDRIPriv->deviceID;
	i810Screen->width=gDRIPriv->width;
	i810Screen->height=gDRIPriv->height;
	i810Screen->mem=gDRIPriv->mem;
	i810Screen->cpp=gDRIPriv->cpp;
	i810Screen->fbStride=gDRIPriv->fbStride;
	i810Screen->fbOffset=gDRIPriv->fbOffset;

	if (gDRIPriv->bitsPerPixel == 15)
	i810Screen->fbFormat = DV_PF_555;
	else
	i810Screen->fbFormat = DV_PF_565;

	i810Screen->backOffset=gDRIPriv->backOffset;
	i810Screen->depthOffset=gDRIPriv->depthOffset;
	i810Screen->backPitch = gDRIPriv->auxPitch;
	i810Screen->backPitchBits = gDRIPriv->auxPitchBits;
	i810Screen->textureOffset=gDRIPriv->textureOffset;
	i810Screen->textureSize=gDRIPriv->textureSize;
	i810Screen->logTextureGranularity = gDRIPriv->logTextureGranularity;

	i810Screen->bufs = i810_create_empty_buffers();
	if (i810Screen->bufs == NULL) {
	__driUtilMessage("i810InitDriver: i810_create_empty_buffers() failed");
	FREE(i810Screen);
	return GL_FALSE;
	}

	i810Screen->back.handle = gDRIPriv->backbuffer;
	i810Screen->back.size = gDRIPriv->backbufferSize;

	if (drmMap(sPriv->fd,
	i810Screen->back.handle,
	i810Screen->back.size,
	(drmAddress *)&i810Screen->back.map) != 0) {
	FREE(i810Screen);
	sPriv->private = NULL;
	__driUtilMessage("i810InitDriver: drmMap failed");
	return GL_FALSE;
	}

	i810Screen->depth.handle = gDRIPriv->depthbuffer;
	i810Screen->depth.size = gDRIPriv->depthbufferSize;

	if (drmMap(sPriv->fd,
	i810Screen->depth.handle,
	i810Screen->depth.size,
	(drmAddress *)&i810Screen->depth.map) != 0) {
	drmUnmap(i810Screen->back.map, i810Screen->back.size);
	FREE(i810Screen);
	sPriv->private = NULL;
	__driUtilMessage("i810InitDriver: drmMap (2) failed");
	return GL_FALSE;
	}

	i810Screen->tex.handle = gDRIPriv->textures;
	i810Screen->tex.size = gDRIPriv->textureSize;

	if (drmMap(sPriv->fd,
	i810Screen->tex.handle,
	i810Screen->tex.size,
	(drmAddress *)&i810Screen->tex.map) != 0) {
	drmUnmap(i810Screen->back.map, i810Screen->back.size);
	drmUnmap(i810Screen->depth.map, i810Screen->depth.size);
	FREE(i810Screen);
	sPriv->private = NULL;
	__driUtilMessage("i810InitDriver: drmMap (3) failed");
	return GL_FALSE;
	}

	i810Screen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;

	return i810FillInModes(sPriv, 16, 16, 0, 1);
	}

	static void
	i810DestroyScreen(__DRIscreenPrivate *sPriv)
	{
	i810ScreenPrivate i810Screen = (i810ScreenPrivate )sPriv->private;

	/* Need to unmap all the bufs and maps here:
	*/
	drmUnmap(i810Screen->back.map, i810Screen->back.size);
	drmUnmap(i810Screen->depth.map, i810Screen->depth.size);
	drmUnmap(i810Screen->tex.map, i810Screen->tex.size);

	FREE(i810Screen);
	sPriv->private = NULL;
	}


	/**
	* Create a buffer which corresponds to the window.
	*/
	static GLboolean
	i810CreateBuffer( __DRIscreenPrivate *driScrnPriv,
	__DRIdrawablePrivate *driDrawPriv,
	const __GLcontextModes *mesaVis,
	GLboolean isPixmap )
	{
	i810ScreenPrivate screen = (i810ScreenPrivate ) driScrnPriv->private;

	if (isPixmap) {
	return GL_FALSE; /* not implemented */
	}
	else {
	struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);

	{
	driRenderbuffer *frontRb
	= driNewRenderbuffer(GL_RGBA,
	driScrnPriv->pFB,
	screen->cpp,
	/screen->frontOffset/0, screen->backPitch,
	driDrawPriv);
	i810SetSpanFunctions(frontRb, mesaVis);
	_mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
	}

	if (mesaVis->doubleBufferMode) {
	driRenderbuffer *backRb
	= driNewRenderbuffer(GL_RGBA,
	screen->back.map,
	screen->cpp,
	screen->backOffset, screen->backPitch,
	driDrawPriv);
	i810SetSpanFunctions(backRb, mesaVis);
	_mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
	}

	if (mesaVis->depthBits == 16) {
	driRenderbuffer *depthRb
	= driNewRenderbuffer(GL_DEPTH_COMPONENT16,
	screen->depth.map,
	screen->cpp,
	screen->depthOffset, screen->backPitch,
	driDrawPriv);
	i810SetSpanFunctions(depthRb, mesaVis);
	_mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
	}

	_mesa_add_soft_renderbuffers(fb,
	GL_FALSE, /* color */
	GL_FALSE, /* depth */
	mesaVis->stencilBits > 0,
	mesaVis->accumRedBits > 0,
	GL_FALSE, /* alpha */
	GL_FALSE /* aux */);
	driDrawPriv->driverPrivate = (void *) fb;

	return (driDrawPriv->driverPrivate != NULL);
	}
	}


	static void
	i810DestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
	{
	_mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
	}

	const struct __DriverAPIRec driDriverAPI = {
	.InitScreen = i810InitScreen,
	.DestroyScreen = i810DestroyScreen,
	.CreateContext = i810CreateContext,
	.DestroyContext = i810DestroyContext,
	.CreateBuffer = i810CreateBuffer,
	.DestroyBuffer = i810DestroyBuffer,
	.SwapBuffers = i810SwapBuffers,
	.MakeCurrent = i810MakeCurrent,
	.UnbindContext = i810UnbindContext,
	.GetSwapInfo = NULL,
	.GetDrawableMSC = NULL,
	.WaitForMSC = NULL,
	.WaitForSBC = NULL,
	.SwapBuffersMSC = NULL
	};