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/**********************************************************
* 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.
*
**********************************************************/
#ifndef SVGA_DRAW_H_
#define SVGA_DRAW_H_
#include "pipe/p_compiler.h"
#include "pipe/p_defines.h"
#include "indices/u_indices.h"
#include "svga_hw_reg.h"
#include "svga3d_shaderdefs.h"
struct svga_context;
struct u_upload_mgr;
/* Should include polygon?
*/
static const unsigned svga_hw_prims =
((1 << PIPE_PRIM_POINTS) |
(1 << PIPE_PRIM_LINES) |
(1 << PIPE_PRIM_LINE_STRIP) |
(1 << PIPE_PRIM_TRIANGLES) |
(1 << PIPE_PRIM_TRIANGLE_STRIP) |
(1 << PIPE_PRIM_TRIANGLE_FAN));
static INLINE unsigned svga_translate_prim(unsigned mode,
unsigned count,
unsigned *out_count)
{
switch (mode) {
case PIPE_PRIM_POINTS:
*out_count = count;
return SVGA3D_PRIMITIVE_POINTLIST;
case PIPE_PRIM_LINES:
*out_count = count / 2;
return SVGA3D_PRIMITIVE_LINELIST;
case PIPE_PRIM_LINE_STRIP:
*out_count = count - 1;
return SVGA3D_PRIMITIVE_LINESTRIP;
case PIPE_PRIM_TRIANGLES:
*out_count = count / 3;
return SVGA3D_PRIMITIVE_TRIANGLELIST;
case PIPE_PRIM_TRIANGLE_STRIP:
*out_count = count - 2;
return SVGA3D_PRIMITIVE_TRIANGLESTRIP;
case PIPE_PRIM_TRIANGLE_FAN:
*out_count = count - 2;
return SVGA3D_PRIMITIVE_TRIANGLEFAN;
default:
assert(0);
*out_count = 0;
return 0;
}
}
struct index_cache {
u_generate_func generate;
unsigned gen_nr;
/* If non-null, this buffer is filled by calling
* generate(nr, map(buffer))
*/
struct pipe_resource *buffer;
};
/** Max number of primitives per draw call */
#define QSZ SVGA3D_MAX_DRAW_PRIMITIVE_RANGES
struct draw_cmd {
struct svga_winsys_context *swc;
SVGA3dVertexDecl vdecl[SVGA3D_INPUTREG_MAX];
struct pipe_resource *vdecl_vb[SVGA3D_INPUTREG_MAX];
unsigned vdecl_count;
SVGA3dPrimitiveRange prim[QSZ];
struct pipe_resource *prim_ib[QSZ];
unsigned prim_count;
unsigned min_index[QSZ];
unsigned max_index[QSZ];
};
#define IDX_CACHE_MAX 8
struct svga_hwtnl {
struct svga_context *svga;
struct u_upload_mgr *upload_ib;
/* Additional negative index bias due to partial buffer uploads
* This is compensated for in the offset associated with all
* vertex buffers.
*/
int index_bias;
/* Flatshade information:
*/
unsigned api_pv;
unsigned hw_pv;
unsigned api_fillmode;
/* Cache the results of running a particular generate func on each
* primitive type.
*/
struct index_cache index_cache[PIPE_PRIM_MAX][IDX_CACHE_MAX];
/* Try to build the maximal draw command packet before emitting:
*/
struct draw_cmd cmd;
};
/***********************************************************************
* 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
svga_hwtnl_simple_draw_range_elements( struct svga_hwtnl *hwtnl,
struct pipe_resource *indexBuffer,
unsigned index_size,
int index_bias,
unsigned min_index,
unsigned max_index,
unsigned prim,
unsigned start,
unsigned count );
#endif
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