1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/**************************************************************************
*
* Copyright 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, 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.
*
**************************************************************************/
#ifndef DRAW_GS_H
#define DRAW_GS_H
#include "draw_context.h"
#include "draw_private.h"
#define MAX_TGSI_PRIMITIVES 4
struct draw_context;
#ifdef HAVE_LLVM
struct draw_gs_jit_context;
struct draw_gs_llvm_variant;
/**
* Structure holding the inputs to the geometry shader. It uses SOA layout.
* The dimensions are as follows:
* - maximum number of vertices for a geometry shader input primitive
* (6 for triangle_adjacency)
* - maximum number of attributes for each vertex
* - four channels per each attribute (x,y,z,w)
* - number of input primitives equal to the SOA vector length
*/
struct draw_gs_inputs {
float data[6][PIPE_MAX_SHADER_INPUTS][TGSI_NUM_CHANNELS][TGSI_NUM_CHANNELS];
};
#endif
/**
* Private version of the compiled geometry shader
*/
struct draw_geometry_shader {
struct draw_context *draw;
struct tgsi_exec_machine *machine;
/* This member will disappear shortly:*/
struct pipe_shader_state state;
struct tgsi_shader_info info;
unsigned position_output;
unsigned max_output_vertices;
unsigned input_primitive;
unsigned output_primitive;
unsigned *primitive_lengths;
unsigned emitted_vertices;
unsigned emitted_primitives;
float (*tmp_output)[4];
unsigned vertex_size;
unsigned in_prim_idx;
unsigned input_vertex_stride;
unsigned fetched_prim_count;
const float (*input)[4];
const struct tgsi_shader_info *input_info;
unsigned vector_length;
unsigned max_out_prims;
#ifdef HAVE_LLVM
struct draw_gs_inputs *gs_input;
struct draw_gs_jit_context *jit_context;
struct draw_gs_llvm_variant *current_variant;
struct vertex_header *gs_output;
int **llvm_prim_lengths;
int *llvm_emitted_primitives;
int *llvm_emitted_vertices;
int *llvm_prim_ids;
#endif
void (*fetch_inputs)(struct draw_geometry_shader *shader,
unsigned *indices,
unsigned num_vertices,
unsigned prim_idx);
void (*fetch_outputs)(struct draw_geometry_shader *shader,
unsigned num_primitives,
float (**p_output)[4]);
void (*prepare)(struct draw_geometry_shader *shader,
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS]);
unsigned (*run)(struct draw_geometry_shader *shader,
unsigned input_primitives);
};
/*
* Returns the number of vertices emitted.
* The vertex shader can emit any number of vertices as long as it's
* smaller than the GS_MAX_OUTPUT_VERTICES shader property.
*/
int draw_geometry_shader_run(struct draw_geometry_shader *shader,
const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
const unsigned constants_size[PIPE_MAX_CONSTANT_BUFFERS],
const struct draw_vertex_info *input_verts,
const struct draw_prim_info *input_prim,
const struct tgsi_shader_info *input_info,
struct draw_vertex_info *output_verts,
struct draw_prim_info *output_prims );
void draw_geometry_shader_prepare(struct draw_geometry_shader *shader,
struct draw_context *draw);
int draw_gs_max_output_vertices(struct draw_geometry_shader *shader,
unsigned pipe_prim);
#ifdef HAVE_LLVM
void draw_gs_set_current_variant(struct draw_geometry_shader *shader,
struct draw_gs_llvm_variant *variant);
#endif
#endif
|
