src/gallium/drivers/svga/svga_draw.c - platform/external/mesa3d - Git at Google

 /**********************************************************
  * Copyright 2008-2009 VMware, Inc.  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, sublicense, 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 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
  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  * 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 "pipe/p_compiler.h"
 #include "util/u_inlines.h"
 #include "pipe/p_defines.h"
 #include "util/u_memory.h"
 #include "util/u_math.h"
 #include "util/u_upload_mgr.h"

 #include "svga_context.h"
 #include "svga_draw.h"
 #include "svga_draw_private.h"
 #include "svga_debug.h"
 #include "svga_screen.h"
 #include "svga_resource_buffer.h"
 #include "svga_resource_texture.h"
 #include "svga_surface.h"
 #include "svga_winsys.h"
 #include "svga_cmd.h"


 struct svga_hwtnl *svga_hwtnl_create( struct svga_context *svga,
                                       struct u_upload_mgr *upload_ib,
                                       struct svga_winsys_context *swc )
 {
    struct svga_hwtnl *hwtnl = CALLOC_STRUCT(svga_hwtnl);
    if (hwtnl == NULL)
       goto fail;

    hwtnl->svga = svga;
    hwtnl->upload_ib = upload_ib;

    hwtnl->cmd.swc = swc;

    return hwtnl;

 fail:
    return NULL;
 }

 void svga_hwtnl_destroy( struct svga_hwtnl *hwtnl )
 {
    int i, j;

    for (i = 0; i < PIPE_PRIM_MAX; i++) {
       for (j = 0; j < IDX_CACHE_MAX; j++) {
          pipe_resource_reference( &hwtnl->index_cache[i][j].buffer,
                                 NULL );
       }
    }

    for (i = 0; i < hwtnl->cmd.vdecl_count; i++)
       pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i], NULL);

    for (i = 0; i < hwtnl->cmd.prim_count; i++)
       pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);


    FREE(hwtnl);
 }


 void svga_hwtnl_set_flatshade( struct svga_hwtnl *hwtnl,
                                boolean flatshade,
                                boolean flatshade_first )
 {
    hwtnl->hw_pv = PV_FIRST;
    hwtnl->api_pv = (flatshade && !flatshade_first) ? PV_LAST : PV_FIRST;
 }

 void svga_hwtnl_set_unfilled( struct svga_hwtnl *hwtnl,
                               unsigned mode )
 {
    hwtnl->api_fillmode = mode;
 }

 void svga_hwtnl_reset_vdecl( struct svga_hwtnl *hwtnl,
                              unsigned count )
 {
    unsigned i;

    assert(hwtnl->cmd.prim_count == 0);

    for (i = count; i < hwtnl->cmd.vdecl_count; i++) {
       pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i],
                             NULL);
    }

    hwtnl->cmd.vdecl_count = count;
 }


 void svga_hwtnl_vdecl( struct svga_hwtnl *hwtnl,
 		       unsigned i,
 		       const SVGA3dVertexDecl *decl,
 		       struct pipe_resource *vb)
 {
    assert(hwtnl->cmd.prim_count == 0);

    assert( i < hwtnl->cmd.vdecl_count );

    hwtnl->cmd.vdecl[i] = *decl;

    pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i], vb);
 }


 /**
  * Determine whether the specified buffer is referred in the primitive queue,
  * for which no commands have been written yet.
  */
 boolean
 svga_hwtnl_is_buffer_referred( struct svga_hwtnl *hwtnl,
                                struct pipe_resource *buffer)
 {
    unsigned i;

    if (svga_buffer_is_user_buffer(buffer)) {
       return FALSE;
    }

    if (!hwtnl->cmd.prim_count) {
       return FALSE;
    }

    for (i = 0; i < hwtnl->cmd.vdecl_count; ++i) {
       if (hwtnl->cmd.vdecl_vb[i] == buffer) {
          return TRUE;
       }
    }

    for (i = 0; i < hwtnl->cmd.prim_count; ++i) {
       if (hwtnl->cmd.prim_ib[i] == buffer) {
          return TRUE;
       }
    }

    return FALSE;
 }


 enum pipe_error
 svga_hwtnl_flush( struct svga_hwtnl *hwtnl )
 {
    struct svga_winsys_context *swc = hwtnl->cmd.swc;
    struct svga_context *svga = hwtnl->svga;
    enum pipe_error ret;

    if (hwtnl->cmd.prim_count) {
       struct svga_winsys_surface *vb_handle[SVGA3D_INPUTREG_MAX];
       struct svga_winsys_surface *ib_handle[QSZ];
       struct svga_winsys_surface *handle;
       SVGA3dVertexDecl *vdecl;
       SVGA3dPrimitiveRange *prim;
       unsigned i;

       /* Unmap upload manager vertex buffers */
       u_upload_unmap(svga->upload_vb);

       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
          handle = svga_buffer_handle(svga, hwtnl->cmd.vdecl_vb[i]);
          if (handle == NULL)
             return PIPE_ERROR_OUT_OF_MEMORY;

          vb_handle[i] = handle;
       }

       /* Unmap upload manager index buffers */
       u_upload_unmap(svga->upload_ib);

       for (i = 0; i < hwtnl->cmd.prim_count; i++) {
          if (hwtnl->cmd.prim_ib[i]) {
             handle = svga_buffer_handle(svga, hwtnl->cmd.prim_ib[i]);
             if (handle == NULL)
                return PIPE_ERROR_OUT_OF_MEMORY;
          }
          else
             handle = NULL;

          ib_handle[i] = handle;
       }

       if (svga->rebind.rendertargets) {
          ret = svga_reemit_framebuffer_bindings(svga);
          if (ret != PIPE_OK) {
             return ret;
          }
       }

       if (svga->rebind.texture_samplers) {
          ret = svga_reemit_tss_bindings(svga);
          if (ret != PIPE_OK) {
             return ret;
          }
       }

       SVGA_DBG(DEBUG_DMA, "draw to sid %p, %d prims\n",
                svga->curr.framebuffer.cbufs[0] ?
                svga_surface(svga->curr.framebuffer.cbufs[0])->handle : NULL,
                hwtnl->cmd.prim_count);

       ret = SVGA3D_BeginDrawPrimitives(swc,
                                        &vdecl,
                                        hwtnl->cmd.vdecl_count,
                                        &prim,
                                        hwtnl->cmd.prim_count);
       if (ret != PIPE_OK)
          return ret;


       memcpy( vdecl,
               hwtnl->cmd.vdecl,
               hwtnl->cmd.vdecl_count * sizeof hwtnl->cmd.vdecl[0]);

       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
          /* Given rangeHint is considered to be relative to indexBias, and
           * indexBias varies per primitive, we cannot accurately supply an
           * rangeHint when emitting more than one primitive per draw command.
           */
          if (hwtnl->cmd.prim_count == 1) {
             vdecl[i].rangeHint.first = hwtnl->cmd.min_index[0];
             vdecl[i].rangeHint.last = hwtnl->cmd.max_index[0] + 1;
          }
          else {
             vdecl[i].rangeHint.first = 0;
             vdecl[i].rangeHint.last = 0;
          }

          swc->surface_relocation(swc,
                                  &vdecl[i].array.surfaceId,
                                  vb_handle[i],
                                  SVGA_RELOC_READ);
       }

       memcpy( prim,
               hwtnl->cmd.prim,
               hwtnl->cmd.prim_count * sizeof hwtnl->cmd.prim[0]);

       for (i = 0; i < hwtnl->cmd.prim_count; i++) {
          swc->surface_relocation(swc,
                                  &prim[i].indexArray.surfaceId,
                                  ib_handle[i],
                                  SVGA_RELOC_READ);
          pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);
       }

       SVGA_FIFOCommitAll( swc );
       hwtnl->cmd.prim_count = 0;
    }

    return PIPE_OK;
 }


 void svga_hwtnl_set_index_bias( struct svga_hwtnl *hwtnl,
 				int index_bias)
 {
    hwtnl->index_bias = index_bias;
 }


 /***********************************************************************
  * Internal functions:
  */

 enum pipe_error svga_hwtnl_prim( struct svga_hwtnl *hwtnl,
                                  const SVGA3dPrimitiveRange *range,
                                  unsigned min_index,
                                  unsigned max_index,
                                  struct pipe_resource *ib )
 {
    enum pipe_error ret = PIPE_OK;

 #ifdef DEBUG
    {
       unsigned i;
       for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
          struct pipe_resource *vb = hwtnl->cmd.vdecl_vb[i];
          unsigned size = vb ? vb->width0 : 0;
          unsigned offset = hwtnl->cmd.vdecl[i].array.offset;
          unsigned stride = hwtnl->cmd.vdecl[i].array.stride;
          int index_bias = (int) range->indexBias + hwtnl->index_bias;
          unsigned width;

          assert(vb);
          assert(size);
          assert(offset < size);
          assert(min_index <= max_index);

          switch (hwtnl->cmd.vdecl[i].identity.type) {
          case SVGA3D_DECLTYPE_FLOAT1:
             width = 4;
             break;
          case SVGA3D_DECLTYPE_FLOAT2:
             width = 4*2;
             break;
          case SVGA3D_DECLTYPE_FLOAT3:
             width = 4*3;
             break;
          case SVGA3D_DECLTYPE_FLOAT4:
             width = 4*4;
             break;
          case SVGA3D_DECLTYPE_D3DCOLOR:
             width = 4;
             break;
          case SVGA3D_DECLTYPE_UBYTE4:
             width = 1*4;
             break;
          case SVGA3D_DECLTYPE_SHORT2:
             width = 2*2;
             break;
          case SVGA3D_DECLTYPE_SHORT4:
             width = 2*4;
             break;
          case SVGA3D_DECLTYPE_UBYTE4N:
             width = 1*4;
             break;
          case SVGA3D_DECLTYPE_SHORT2N:
             width = 2*2;
             break;
          case SVGA3D_DECLTYPE_SHORT4N:
             width = 2*4;
             break;
          case SVGA3D_DECLTYPE_USHORT2N:
             width = 2*2;
             break;
          case SVGA3D_DECLTYPE_USHORT4N:
             width = 2*4;
             break;
          case SVGA3D_DECLTYPE_UDEC3:
             width = 4;
             break;
          case SVGA3D_DECLTYPE_DEC3N:
             width = 4;
             break;
          case SVGA3D_DECLTYPE_FLOAT16_2:
             width = 2*2;
             break;
          case SVGA3D_DECLTYPE_FLOAT16_4:
             width = 2*4;
             break;
          default:
             assert(0);
             width = 0;
             break;
          }

          if (index_bias >= 0) {
             assert(offset + index_bias*stride + width <= size);
          }

          /*
           * min_index/max_index are merely conservative guesses, so we can't
           * make buffer overflow detection based on their values.
           */
       }

       assert(range->indexWidth == range->indexArray.stride);

       if(ib) {
          unsigned size = ib->width0;
          unsigned offset = range->indexArray.offset;
          unsigned stride = range->indexArray.stride;
          unsigned count;

          assert(size);
          assert(offset < size);
          assert(stride);

          switch (range->primType) {
          case SVGA3D_PRIMITIVE_POINTLIST:
             count = range->primitiveCount;
             break;
          case SVGA3D_PRIMITIVE_LINELIST:
             count = range->primitiveCount * 2;
             break;
          case SVGA3D_PRIMITIVE_LINESTRIP:
             count = range->primitiveCount + 1;
             break;
          case SVGA3D_PRIMITIVE_TRIANGLELIST:
             count = range->primitiveCount * 3;
             break;
          case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
             count = range->primitiveCount + 2;
             break;
          case SVGA3D_PRIMITIVE_TRIANGLEFAN:
             count = range->primitiveCount + 2;
             break;
          default:
             assert(0);
             count = 0;
             break;
          }

          assert(offset + count*stride <= size);
       }
    }
 #endif

    if (hwtnl->cmd.prim_count+1 >= QSZ) {
       ret = svga_hwtnl_flush( hwtnl );
       if (ret != PIPE_OK)
          return ret;
    }

    /* min/max indices are relative to bias */
    hwtnl->cmd.min_index[hwtnl->cmd.prim_count] = min_index;
    hwtnl->cmd.max_index[hwtnl->cmd.prim_count] = max_index;

    hwtnl->cmd.prim[hwtnl->cmd.prim_count] = *range;
    hwtnl->cmd.prim[hwtnl->cmd.prim_count].indexBias += hwtnl->index_bias;

    pipe_resource_reference(&hwtnl->cmd.prim_ib[hwtnl->cmd.prim_count], ib);
    hwtnl->cmd.prim_count++;

    return ret;
 }
	/**********************************************************
	* Copyright 2008-2009 VMware, Inc. 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, sublicense, 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 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
	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	* 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 "pipe/p_compiler.h"
	#include "util/u_inlines.h"
	#include "pipe/p_defines.h"
	#include "util/u_memory.h"
	#include "util/u_math.h"
	#include "util/u_upload_mgr.h"

	#include "svga_context.h"
	#include "svga_draw.h"
	#include "svga_draw_private.h"
	#include "svga_debug.h"
	#include "svga_screen.h"
	#include "svga_resource_buffer.h"
	#include "svga_resource_texture.h"
	#include "svga_surface.h"
	#include "svga_winsys.h"
	#include "svga_cmd.h"


	struct svga_hwtnl svga_hwtnl_create( struct svga_context svga,
	struct u_upload_mgr *upload_ib,
	struct svga_winsys_context *swc )
	{
	struct svga_hwtnl *hwtnl = CALLOC_STRUCT(svga_hwtnl);
	if (hwtnl == NULL)
	goto fail;

	hwtnl->svga = svga;
	hwtnl->upload_ib = upload_ib;

	hwtnl->cmd.swc = swc;

	return hwtnl;

	fail:
	return NULL;
	}

	void svga_hwtnl_destroy( struct svga_hwtnl *hwtnl )
	{
	int i, j;

	for (i = 0; i < PIPE_PRIM_MAX; i++) {
	for (j = 0; j < IDX_CACHE_MAX; j++) {
	pipe_resource_reference( &hwtnl->index_cache[i][j].buffer,
	NULL );
	}
	}

	for (i = 0; i < hwtnl->cmd.vdecl_count; i++)
	pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i], NULL);

	for (i = 0; i < hwtnl->cmd.prim_count; i++)
	pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);


	FREE(hwtnl);
	}


	void svga_hwtnl_set_flatshade( struct svga_hwtnl *hwtnl,
	boolean flatshade,
	boolean flatshade_first )
	{
	hwtnl->hw_pv = PV_FIRST;
	hwtnl->api_pv = (flatshade && !flatshade_first) ? PV_LAST : PV_FIRST;
	}

	void svga_hwtnl_set_unfilled( struct svga_hwtnl *hwtnl,
	unsigned mode )
	{
	hwtnl->api_fillmode = mode;
	}

	void svga_hwtnl_reset_vdecl( struct svga_hwtnl *hwtnl,
	unsigned count )
	{
	unsigned i;

	assert(hwtnl->cmd.prim_count == 0);

	for (i = count; i < hwtnl->cmd.vdecl_count; i++) {
	pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i],
	NULL);
	}

	hwtnl->cmd.vdecl_count = count;
	}


	void svga_hwtnl_vdecl( struct svga_hwtnl *hwtnl,
	unsigned i,
	const SVGA3dVertexDecl *decl,
	struct pipe_resource *vb)
	{
	assert(hwtnl->cmd.prim_count == 0);

	assert( i < hwtnl->cmd.vdecl_count );

	hwtnl->cmd.vdecl[i] = *decl;

	pipe_resource_reference(&hwtnl->cmd.vdecl_vb[i], vb);
	}


	/**
	* Determine whether the specified buffer is referred in the primitive queue,
	* for which no commands have been written yet.
	*/
	boolean
	svga_hwtnl_is_buffer_referred( struct svga_hwtnl *hwtnl,
	struct pipe_resource *buffer)
	{
	unsigned i;

	if (svga_buffer_is_user_buffer(buffer)) {
	return FALSE;
	}

	if (!hwtnl->cmd.prim_count) {
	return FALSE;
	}

	for (i = 0; i < hwtnl->cmd.vdecl_count; ++i) {
	if (hwtnl->cmd.vdecl_vb[i] == buffer) {
	return TRUE;
	}
	}

	for (i = 0; i < hwtnl->cmd.prim_count; ++i) {
	if (hwtnl->cmd.prim_ib[i] == buffer) {
	return TRUE;
	}
	}

	return FALSE;
	}


	enum pipe_error
	svga_hwtnl_flush( struct svga_hwtnl *hwtnl )
	{
	struct svga_winsys_context *swc = hwtnl->cmd.swc;
	struct svga_context *svga = hwtnl->svga;
	enum pipe_error ret;

	if (hwtnl->cmd.prim_count) {
	struct svga_winsys_surface *vb_handle[SVGA3D_INPUTREG_MAX];
	struct svga_winsys_surface *ib_handle[QSZ];
	struct svga_winsys_surface *handle;
	SVGA3dVertexDecl *vdecl;
	SVGA3dPrimitiveRange *prim;
	unsigned i;

	/* Unmap upload manager vertex buffers */
	u_upload_unmap(svga->upload_vb);

	for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
	handle = svga_buffer_handle(svga, hwtnl->cmd.vdecl_vb[i]);
	if (handle == NULL)
	return PIPE_ERROR_OUT_OF_MEMORY;

	vb_handle[i] = handle;
	}

	/* Unmap upload manager index buffers */
	u_upload_unmap(svga->upload_ib);

	for (i = 0; i < hwtnl->cmd.prim_count; i++) {
	if (hwtnl->cmd.prim_ib[i]) {
	handle = svga_buffer_handle(svga, hwtnl->cmd.prim_ib[i]);
	if (handle == NULL)
	return PIPE_ERROR_OUT_OF_MEMORY;
	}
	else
	handle = NULL;

	ib_handle[i] = handle;
	}

	if (svga->rebind.rendertargets) {
	ret = svga_reemit_framebuffer_bindings(svga);
	if (ret != PIPE_OK) {
	return ret;
	}
	}

	if (svga->rebind.texture_samplers) {
	ret = svga_reemit_tss_bindings(svga);
	if (ret != PIPE_OK) {
	return ret;
	}
	}

	SVGA_DBG(DEBUG_DMA, "draw to sid %p, %d prims\n",
	svga->curr.framebuffer.cbufs[0] ?
	svga_surface(svga->curr.framebuffer.cbufs[0])->handle : NULL,
	hwtnl->cmd.prim_count);

	ret = SVGA3D_BeginDrawPrimitives(swc,
	&vdecl,
	hwtnl->cmd.vdecl_count,
	&prim,
	hwtnl->cmd.prim_count);
	if (ret != PIPE_OK)
	return ret;


	memcpy( vdecl,
	hwtnl->cmd.vdecl,
	hwtnl->cmd.vdecl_count * sizeof hwtnl->cmd.vdecl[0]);

	for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
	/* Given rangeHint is considered to be relative to indexBias, and
	* indexBias varies per primitive, we cannot accurately supply an
	* rangeHint when emitting more than one primitive per draw command.
	*/
	if (hwtnl->cmd.prim_count == 1) {
	vdecl[i].rangeHint.first = hwtnl->cmd.min_index[0];
	vdecl[i].rangeHint.last = hwtnl->cmd.max_index[0] + 1;
	}
	else {
	vdecl[i].rangeHint.first = 0;
	vdecl[i].rangeHint.last = 0;
	}

	swc->surface_relocation(swc,
	&vdecl[i].array.surfaceId,
	vb_handle[i],
	SVGA_RELOC_READ);
	}

	memcpy( prim,
	hwtnl->cmd.prim,
	hwtnl->cmd.prim_count * sizeof hwtnl->cmd.prim[0]);

	for (i = 0; i < hwtnl->cmd.prim_count; i++) {
	swc->surface_relocation(swc,
	&prim[i].indexArray.surfaceId,
	ib_handle[i],
	SVGA_RELOC_READ);
	pipe_resource_reference(&hwtnl->cmd.prim_ib[i], NULL);
	}

	SVGA_FIFOCommitAll( swc );
	hwtnl->cmd.prim_count = 0;
	}

	return PIPE_OK;
	}


	void svga_hwtnl_set_index_bias( struct svga_hwtnl *hwtnl,
	int index_bias)
	{
	hwtnl->index_bias = index_bias;
	}



	/***********************************************************************
	* Internal functions:
	*/

	enum pipe_error svga_hwtnl_prim( struct svga_hwtnl *hwtnl,
	const SVGA3dPrimitiveRange *range,
	unsigned min_index,
	unsigned max_index,
	struct pipe_resource *ib )
	{
	enum pipe_error ret = PIPE_OK;

	#ifdef DEBUG
	{
	unsigned i;
	for (i = 0; i < hwtnl->cmd.vdecl_count; i++) {
	struct pipe_resource *vb = hwtnl->cmd.vdecl_vb[i];
	unsigned size = vb ? vb->width0 : 0;
	unsigned offset = hwtnl->cmd.vdecl[i].array.offset;
	unsigned stride = hwtnl->cmd.vdecl[i].array.stride;
	int index_bias = (int) range->indexBias + hwtnl->index_bias;
	unsigned width;

	assert(vb);
	assert(size);
	assert(offset < size);
	assert(min_index <= max_index);

	switch (hwtnl->cmd.vdecl[i].identity.type) {
	case SVGA3D_DECLTYPE_FLOAT1:
	width = 4;
	break;
	case SVGA3D_DECLTYPE_FLOAT2:
	width = 4*2;
	break;
	case SVGA3D_DECLTYPE_FLOAT3:
	width = 4*3;
	break;
	case SVGA3D_DECLTYPE_FLOAT4:
	width = 4*4;
	break;
	case SVGA3D_DECLTYPE_D3DCOLOR:
	width = 4;
	break;
	case SVGA3D_DECLTYPE_UBYTE4:
	width = 1*4;
	break;
	case SVGA3D_DECLTYPE_SHORT2:
	width = 2*2;
	break;
	case SVGA3D_DECLTYPE_SHORT4:
	width = 2*4;
	break;
	case SVGA3D_DECLTYPE_UBYTE4N:
	width = 1*4;
	break;
	case SVGA3D_DECLTYPE_SHORT2N:
	width = 2*2;
	break;
	case SVGA3D_DECLTYPE_SHORT4N:
	width = 2*4;
	break;
	case SVGA3D_DECLTYPE_USHORT2N:
	width = 2*2;
	break;
	case SVGA3D_DECLTYPE_USHORT4N:
	width = 2*4;
	break;
	case SVGA3D_DECLTYPE_UDEC3:
	width = 4;
	break;
	case SVGA3D_DECLTYPE_DEC3N:
	width = 4;
	break;
	case SVGA3D_DECLTYPE_FLOAT16_2:
	width = 2*2;
	break;
	case SVGA3D_DECLTYPE_FLOAT16_4:
	width = 2*4;
	break;
	default:
	assert(0);
	width = 0;
	break;
	}

	if (index_bias >= 0) {
	assert(offset + index_bias*stride + width <= size);
	}

	/*
	* min_index/max_index are merely conservative guesses, so we can't
	* make buffer overflow detection based on their values.
	*/
	}

	assert(range->indexWidth == range->indexArray.stride);

	if(ib) {
	unsigned size = ib->width0;
	unsigned offset = range->indexArray.offset;
	unsigned stride = range->indexArray.stride;
	unsigned count;

	assert(size);
	assert(offset < size);
	assert(stride);

	switch (range->primType) {
	case SVGA3D_PRIMITIVE_POINTLIST:
	count = range->primitiveCount;
	break;
	case SVGA3D_PRIMITIVE_LINELIST:
	count = range->primitiveCount * 2;
	break;
	case SVGA3D_PRIMITIVE_LINESTRIP:
	count = range->primitiveCount + 1;
	break;
	case SVGA3D_PRIMITIVE_TRIANGLELIST:
	count = range->primitiveCount * 3;
	break;
	case SVGA3D_PRIMITIVE_TRIANGLESTRIP:
	count = range->primitiveCount + 2;
	break;
	case SVGA3D_PRIMITIVE_TRIANGLEFAN:
	count = range->primitiveCount + 2;
	break;
	default:
	assert(0);
	count = 0;
	break;
	}

	assert(offset + count*stride <= size);
	}
	}
	#endif

	if (hwtnl->cmd.prim_count+1 >= QSZ) {
	ret = svga_hwtnl_flush( hwtnl );
	if (ret != PIPE_OK)
	return ret;
	}

	/* min/max indices are relative to bias */
	hwtnl->cmd.min_index[hwtnl->cmd.prim_count] = min_index;
	hwtnl->cmd.max_index[hwtnl->cmd.prim_count] = max_index;

	hwtnl->cmd.prim[hwtnl->cmd.prim_count] = *range;
	hwtnl->cmd.prim[hwtnl->cmd.prim_count].indexBias += hwtnl->index_bias;

	pipe_resource_reference(&hwtnl->cmd.prim_ib[hwtnl->cmd.prim_count], ib);
	hwtnl->cmd.prim_count++;

	return ret;
	}