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
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/**************************************************************************
*
* Copyright 2007 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.
*
**************************************************************************/
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
* Brian Paul
* Ian Romanick <idr@us.ibm.com>
*/
#include <spu_mfcio.h>
#include "pipe/p_state.h"
#include "pipe/p_shader_tokens.h"
#include "util/u_math.h"
#include "draw/draw_private.h"
#include "draw/draw_context.h"
#include "cell/common.h"
#include "spu_vertex_shader.h"
#include "spu_exec.h"
#include "spu_main.h"
#define MAX_VERTEX_SIZE ((2 + PIPE_MAX_SHADER_OUTPUTS) * 4 * sizeof(float))
#define CLIP_RIGHT_BIT 0x01
#define CLIP_LEFT_BIT 0x02
#define CLIP_TOP_BIT 0x04
#define CLIP_BOTTOM_BIT 0x08
#define CLIP_FAR_BIT 0x10
#define CLIP_NEAR_BIT 0x20
static INLINE float
dot4(const float *a, const float *b)
{
return (a[0]*b[0] +
a[1]*b[1] +
a[2]*b[2] +
a[3]*b[3]);
}
static INLINE unsigned
compute_clipmask(const float *clip, /*const*/ float plane[][4], unsigned nr)
{
unsigned mask = 0;
unsigned i;
/* Do the hardwired planes first:
*/
if (-clip[0] + clip[3] < 0) mask |= CLIP_RIGHT_BIT;
if ( clip[0] + clip[3] < 0) mask |= CLIP_LEFT_BIT;
if (-clip[1] + clip[3] < 0) mask |= CLIP_TOP_BIT;
if ( clip[1] + clip[3] < 0) mask |= CLIP_BOTTOM_BIT;
if (-clip[2] + clip[3] < 0) mask |= CLIP_FAR_BIT;
if ( clip[2] + clip[3] < 0) mask |= CLIP_NEAR_BIT;
/* Followed by any remaining ones:
*/
for (i = 6; i < nr; i++) {
if (dot4(clip, plane[i]) < 0)
mask |= (1<<i);
}
return mask;
}
/**
* Transform vertices with the current vertex program/shader
* Up to four vertices can be shaded at a time.
* \param vbuffer the input vertex data
* \param elts indexes of four input vertices
* \param count number of vertices to shade [1..4]
* \param vOut array of pointers to four output vertices
*/
static void
run_vertex_program(struct spu_vs_context *draw,
unsigned elts[4], unsigned count,
const uint64_t *vOut)
{
struct spu_exec_machine *machine = &draw->machine;
unsigned int j;
PIPE_ALIGN_VAR(16) struct spu_exec_vector inputs[PIPE_MAX_ATTRIBS];
PIPE_ALIGN_VAR(16) struct spu_exec_vector outputs[PIPE_MAX_ATTRIBS];
const float *scale = draw->viewport.scale;
const float *trans = draw->viewport.translate;
ASSERT(count <= 4);
machine->Processor = TGSI_PROCESSOR_VERTEX;
ASSERT_ALIGN16(draw->constants);
machine->Consts = (float (*)[4]) draw->constants;
machine->Inputs = inputs;
machine->Outputs = outputs;
spu_vertex_fetch( draw, machine, elts, count );
/* run shader */
spu_exec_machine_run( machine );
/* store machine results */
for (j = 0; j < count; j++) {
unsigned slot;
float x, y, z, w;
PIPE_ALIGN_VAR(16)
unsigned char buffer[sizeof(struct vertex_header)
+ MAX_VERTEX_SIZE];
struct vertex_header *const tmpOut =
(struct vertex_header *) buffer;
const unsigned vert_size = ROUNDUP16(sizeof(struct vertex_header)
+ (sizeof(float) * 4
* draw->num_vs_outputs));
mfc_get(tmpOut, vOut[j], vert_size, TAG_VERTEX_BUFFER, 0, 0);
wait_on_mask(1 << TAG_VERTEX_BUFFER);
/* Handle attr[0] (position) specially:
*
* XXX: Computing the clipmask should be done in the vertex
* program as a set of DP4 instructions appended to the
* user-provided code.
*/
x = tmpOut->clip[0] = machine->Outputs[0].xyzw[0].f[j];
y = tmpOut->clip[1] = machine->Outputs[0].xyzw[1].f[j];
z = tmpOut->clip[2] = machine->Outputs[0].xyzw[2].f[j];
w = tmpOut->clip[3] = machine->Outputs[0].xyzw[3].f[j];
tmpOut->clipmask = compute_clipmask(tmpOut->clip, draw->plane,
draw->nr_planes);
tmpOut->edgeflag = 1;
/* divide by w */
w = 1.0f / w;
x *= w;
y *= w;
z *= w;
/* Viewport mapping */
tmpOut->data[0][0] = x * scale[0] + trans[0];
tmpOut->data[0][1] = y * scale[1] + trans[1];
tmpOut->data[0][2] = z * scale[2] + trans[2];
tmpOut->data[0][3] = w;
/* Remaining attributes are packed into sequential post-transform
* vertex attrib slots.
*/
for (slot = 1; slot < draw->num_vs_outputs; slot++) {
tmpOut->data[slot][0] = machine->Outputs[slot].xyzw[0].f[j];
tmpOut->data[slot][1] = machine->Outputs[slot].xyzw[1].f[j];
tmpOut->data[slot][2] = machine->Outputs[slot].xyzw[2].f[j];
tmpOut->data[slot][3] = machine->Outputs[slot].xyzw[3].f[j];
}
mfc_put(tmpOut, vOut[j], vert_size, TAG_VERTEX_BUFFER, 0, 0);
} /* loop over vertices */
}
PIPE_ALIGN_VAR(16) unsigned char
immediates[(sizeof(float) * 4 * TGSI_EXEC_NUM_IMMEDIATES) + 32];
void
spu_bind_vertex_shader(struct spu_vs_context *draw,
struct cell_shader_info *vs)
{
const unsigned immediate_addr = vs->immediates;
const unsigned immediate_size =
ROUNDUP16((sizeof(float) * 4 * vs->num_immediates)
+ (immediate_addr & 0x0f));
mfc_get(immediates, immediate_addr & ~0x0f, immediate_size,
TAG_VERTEX_BUFFER, 0, 0);
draw->machine.Instructions = (struct tgsi_full_instruction *)
vs->instructions;
draw->machine.NumInstructions = vs->num_instructions;
draw->machine.Declarations = (struct tgsi_full_declaration *)
vs->declarations;
draw->machine.NumDeclarations = vs->num_declarations;
draw->num_vs_outputs = vs->num_outputs;
/* specify the shader to interpret/execute */
spu_exec_machine_init(&draw->machine,
PIPE_MAX_SAMPLERS,
NULL /*samplers*/,
PIPE_SHADER_VERTEX);
wait_on_mask(1 << TAG_VERTEX_BUFFER);
(void) memcpy(& draw->machine.Imms, &immediates[immediate_addr & 0x0f],
sizeof(float) * 4 * vs->num_immediates);
}
void
spu_execute_vertex_shader(struct spu_vs_context *draw,
const struct cell_command_vs *vs)
{
unsigned i;
(void) memcpy(draw->plane, vs->plane, sizeof(float) * 4 * vs->nr_planes);
draw->nr_planes = vs->nr_planes;
draw->vertex_fetch.nr_attrs = vs->nr_attrs;
for (i = 0; i < vs->num_elts; i += 4) {
const unsigned batch_size = MIN2(vs->num_elts - i, 4);
run_vertex_program(draw, & vs->elts[i], batch_size, &vs->vOut[i]);
}
}
|
