d17496a24f0e1272db9d683df18a4aec818ff572
1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Keith Whitwell <keith@tungstengraphics.com>
34 #include "pipe/p_util.h"
35 #include "draw_private.h"
36 #include "draw_context.h"
37 #include "draw_vertex.h"
39 #include "x86/rtasm/x86sse.h"
41 #include "pipe/tgsi/exec/tgsi_core.h"
44 static INLINE
float dot4(const float *a
, const float *b
)
46 float result
= (a
[0]*b
[0] +
54 static INLINE
unsigned
55 compute_clipmask(const float *clip
, const float (*plane
)[4], unsigned nr
)
60 for (i
= 0; i
< nr
; i
++) {
61 if (dot4(clip
, plane
[i
]) < 0)
71 #if !defined(XSTDCALL)
73 #define XSTDCALL __stdcall
79 typedef void (XSTDCALL
*codegen_function
) (
80 const struct tgsi_exec_vector
*input
,
81 struct tgsi_exec_vector
*output
,
83 struct tgsi_exec_vector
*temporary
);
87 * Transform vertices with the current vertex program/shader
88 * Up to four vertices can be shaded at a time.
89 * \param vbuffer the input vertex data
90 * \param elts indexes of four input vertices
91 * \param count number of vertices to shade [1..4]
92 * \param vOut array of pointers to four output vertices
95 run_vertex_program(struct draw_context
*draw
,
96 unsigned elts
[4], unsigned count
,
97 struct vertex_header
*vOut
[])
99 struct tgsi_exec_machine
*machine
= &draw
->machine
;
102 ALIGN16_DECL(struct tgsi_exec_vector
, inputs
, PIPE_ATTRIB_MAX
);
103 ALIGN16_DECL(struct tgsi_exec_vector
, outputs
, PIPE_ATTRIB_MAX
);
104 const float *scale
= draw
->viewport
.scale
;
105 const float *trans
= draw
->viewport
.translate
;
108 assert(draw
->vertex_shader
->state
->output_semantic_name
[0]
109 == TGSI_SEMANTIC_POSITION
);
111 /* Consts does not require 16 byte alignment. */
112 machine
->Consts
= (float (*)[4]) draw
->mapped_constants
;
114 machine
->Inputs
= ALIGN16_ASSIGN(inputs
);
115 machine
->Outputs
= ALIGN16_ASSIGN(outputs
);
117 draw_vertex_fetch( draw
, machine
, elts
, count
);
120 if( draw
->vertex_shader
->state
->executable
!= NULL
) {
122 codegen_function func
= (codegen_function
) draw
->vertex_shader
->state
->executable
;
131 tgsi_exec_machine_run( machine
);
135 /* store machine results */
136 for (j
= 0; j
< count
; j
++) {
140 /* Handle attr[0] (position) specially:
142 * XXX: Computing the clipmask should be done in the vertex
143 * program as a set of DP4 instructions appended to the
144 * user-provided code.
146 x
= vOut
[j
]->clip
[0] = machine
->Outputs
[0].xyzw
[0].f
[j
];
147 y
= vOut
[j
]->clip
[1] = machine
->Outputs
[0].xyzw
[1].f
[j
];
148 z
= vOut
[j
]->clip
[2] = machine
->Outputs
[0].xyzw
[2].f
[j
];
149 w
= vOut
[j
]->clip
[3] = machine
->Outputs
[0].xyzw
[3].f
[j
];
151 vOut
[j
]->clipmask
= compute_clipmask(vOut
[j
]->clip
, draw
->plane
, draw
->nr_planes
);
152 vOut
[j
]->edgeflag
= 1;
160 /* Viewport mapping */
161 vOut
[j
]->data
[0][0] = x
* scale
[0] + trans
[0];
162 vOut
[j
]->data
[0][1] = y
* scale
[1] + trans
[1];
163 vOut
[j
]->data
[0][2] = z
* scale
[2] + trans
[2];
164 vOut
[j
]->data
[0][3] = w
;
166 /* Remaining attributes are packed into sequential post-transform
167 * vertex attrib slots.
168 * Skip 0 since we just did it above.
169 * Subtract two because of the VERTEX_HEADER, CLIP_POS attribs.
171 for (slot
= 1; slot
< draw
->vertex_info
.num_attribs
- 2; slot
++) {
172 vOut
[j
]->data
[slot
][0] = machine
->Outputs
[slot
].xyzw
[0].f
[j
];
173 vOut
[j
]->data
[slot
][1] = machine
->Outputs
[slot
].xyzw
[1].f
[j
];
174 vOut
[j
]->data
[slot
][2] = machine
->Outputs
[slot
].xyzw
[2].f
[j
];
175 vOut
[j
]->data
[slot
][3] = machine
->Outputs
[slot
].xyzw
[3].f
[j
];
177 printf("output %d: %f %f %f %f\n", slot,
178 vOut[j]->data[slot][0],
179 vOut[j]->data[slot][1],
180 vOut[j]->data[slot][2],
181 vOut[j]->data[slot][3]);
184 } /* loop over vertices */
189 * Called by the draw module when the vertx cache needs to be flushed.
190 * This involves running the vertex shader.
192 void draw_vertex_shader_queue_flush( struct draw_context
*draw
)
196 // fprintf(stderr, " q(%d) ", draw->vs.queue_nr );
198 /* run vertex shader on vertex cache entries, four per invokation */
199 for (i
= 0; i
< draw
->vs
.queue_nr
; i
+= 4) {
200 struct vertex_header
*dests
[4];
204 for (j
= 0; j
< 4; j
++) {
205 elts
[j
] = draw
->vs
.queue
[i
+ j
].elt
;
206 dests
[j
] = draw
->vs
.queue
[i
+ j
].dest
;
209 n
= MIN2(4, draw
->vs
.queue_nr
- i
);
213 run_vertex_program(draw
, elts
, n
, dests
);
216 draw
->vs
.queue_nr
= 0;
221 draw_create_vertex_shader(struct draw_context
*draw
,
222 const struct pipe_shader_state
*shader
)
224 struct draw_vertex_shader
*vs
= calloc(1, sizeof(struct draw_vertex_shader
));
227 #if defined(__i386__) || defined(__386__)
228 x86_init_func(&vs
->sse2_program
);
231 tgsi_emit_sse2(shader
->tokens
, &vs
->sse2_program
);
232 ((struct pipe_shader_state
*)(vs
->state
))->executable
=
233 x86_get_func(&vs
->sse2_program
);
240 void draw_bind_vertex_shader(struct draw_context
*draw
,
244 draw
->vertex_shader
= (struct draw_vertex_shader
*)(vcso
);
246 /* specify the fragment program to interpret/execute */
247 tgsi_exec_machine_init(&draw
->machine
,
248 draw
->vertex_shader
->state
->tokens
,
253 void draw_delete_vertex_shader(struct draw_context
*draw
,
256 struct draw_vertex_shader
*vs
= (struct draw_vertex_shader
*)(vcso
);
257 #if defined(__i386__) || defined(__386__)
258 x86_release_func(&vs
->sse2_program
);