1 /**************************************************************************
3 * Copyright 2010 VMware, Inc.
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 VMWARE 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 **************************************************************************/
28 #include "draw/draw_private.h"
29 #include "draw/draw_vs.h"
30 #include "draw/draw_gs.h"
31 #include "draw/draw_context.h"
32 #include "draw/draw_vbuf.h"
33 #include "draw/draw_vertex.h"
34 #include "draw/draw_pt.h"
36 #include "pipe/p_state.h"
38 #include "util/u_math.h"
39 #include "util/u_memory.h"
42 struct draw_context
*draw
;
44 unsigned input_vertex_stride
;
45 const float (*inputs
)[4];
46 const float *pre_clip_pos
;
48 boolean use_pre_clip_pos
;
50 unsigned emitted_primitives
;
51 unsigned generated_primitives
;
54 static const struct pipe_stream_output_info
*
55 draw_so_info(const struct draw_context
*draw
)
57 const struct pipe_stream_output_info
*state
= NULL
;
59 if (draw
->gs
.geometry_shader
) {
60 state
= &draw
->gs
.geometry_shader
->state
.stream_output
;
62 state
= &draw
->vs
.vertex_shader
->state
.stream_output
;
69 draw_has_so(const struct draw_context
*draw
)
71 const struct pipe_stream_output_info
*state
= draw_so_info(draw
);
73 if (state
&& state
->num_outputs
> 0)
79 void draw_pt_so_emit_prepare(struct pt_so_emit
*emit
, boolean use_pre_clip_pos
)
81 struct draw_context
*draw
= emit
->draw
;
83 emit
->use_pre_clip_pos
= use_pre_clip_pos
;
84 emit
->has_so
= draw_has_so(draw
);
86 emit
->pos_idx
= draw_current_shader_position_output(draw
);
88 /* if we have a state with outputs make sure we have
89 * buffers to output to */
91 boolean has_valid_buffer
= FALSE
;
93 for (i
= 0; i
< draw
->so
.num_targets
; ++i
) {
94 if (draw
->so
.targets
[i
]) {
95 has_valid_buffer
= TRUE
;
99 emit
->has_so
= has_valid_buffer
;
105 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
107 draw_do_flush( draw
, DRAW_FLUSH_BACKEND
);
110 static void so_emit_prim(struct pt_so_emit
*so
,
112 unsigned num_vertices
)
115 unsigned input_vertex_stride
= so
->input_vertex_stride
;
116 struct draw_context
*draw
= so
->draw
;
117 const float (*input_ptr
)[4];
118 const float *pcp_ptr
= NULL
;
119 const struct pipe_stream_output_info
*state
= draw_so_info(draw
);
121 int buffer_total_bytes
[PIPE_MAX_SO_BUFFERS
];
122 boolean buffer_written
[PIPE_MAX_SO_BUFFERS
] = {0};
124 input_ptr
= so
->inputs
;
125 if (so
->use_pre_clip_pos
)
126 pcp_ptr
= so
->pre_clip_pos
;
128 ++so
->generated_primitives
;
130 for (i
= 0; i
< draw
->so
.num_targets
; i
++) {
131 struct draw_so_target
*target
= draw
->so
.targets
[i
];
133 buffer_total_bytes
[i
] = target
->internal_offset
;
135 buffer_total_bytes
[i
] = 0;
139 /* check have we space to emit prim first - if not don't do anything */
140 for (i
= 0; i
< num_vertices
; ++i
) {
142 for (slot
= 0; slot
< state
->num_outputs
; ++slot
) {
143 unsigned num_comps
= state
->output
[slot
].num_components
;
144 int ob
= state
->output
[slot
].output_buffer
;
145 unsigned dst_offset
= state
->output
[slot
].dst_offset
* sizeof(float);
146 unsigned write_size
= num_comps
* sizeof(float);
147 /* If a buffer is missing then that's equivalent to
149 if (!draw
->so
.targets
[ob
]) {
152 if ((buffer_total_bytes
[ob
] + write_size
+ dst_offset
) >
153 draw
->so
.targets
[ob
]->target
.buffer_size
) {
157 for (ob
= 0; ob
< draw
->so
.num_targets
; ++ob
) {
158 buffer_total_bytes
[ob
] += state
->stride
[ob
] * sizeof(float);
162 for (i
= 0; i
< num_vertices
; ++i
) {
163 const float (*input
)[4];
164 const float *pre_clip_pos
= NULL
;
167 input
= (const float (*)[4])(
168 (const char *)input_ptr
+ (indices
[i
] * input_vertex_stride
));
171 pre_clip_pos
= (const float *)(
172 (const char *)pcp_ptr
+ (indices
[i
] * input_vertex_stride
));
174 for (slot
= 0; slot
< state
->num_outputs
; ++slot
) {
175 unsigned idx
= state
->output
[slot
].register_index
;
176 unsigned start_comp
= state
->output
[slot
].start_component
;
177 unsigned num_comps
= state
->output
[slot
].num_components
;
179 ob
= state
->output
[slot
].output_buffer
;
180 buffer_written
[ob
] = TRUE
;
182 buffer
= (float *)((char *)draw
->so
.targets
[ob
]->mapping
+
183 draw
->so
.targets
[ob
]->target
.buffer_offset
+
184 draw
->so
.targets
[ob
]->internal_offset
) +
185 state
->output
[slot
].dst_offset
;
187 if (idx
== so
->pos_idx
&& pcp_ptr
)
188 memcpy(buffer
, &pre_clip_pos
[start_comp
],
189 num_comps
* sizeof(float));
191 memcpy(buffer
, &input
[idx
][start_comp
],
192 num_comps
* sizeof(float));
196 debug_printf("VERT[%d], offset = %d, slot[%d] sc = %d, num_c = %d, idx = %d = [",
198 draw
->so
.targets
[ob
]->internal_offset
,
199 slot
, start_comp
, num_comps
, idx
);
200 for (j
= 0; j
< num_comps
; ++j
) {
201 unsigned *ubuffer
= (unsigned*)buffer
;
202 debug_printf("%d (0x%x), ", ubuffer
[j
], ubuffer
[j
]);
208 for (ob
= 0; ob
< draw
->so
.num_targets
; ++ob
) {
209 struct draw_so_target
*target
= draw
->so
.targets
[ob
];
210 if (target
&& buffer_written
[ob
]) {
211 target
->internal_offset
+= state
->stride
[ob
] * sizeof(float);
215 ++so
->emitted_primitives
;
218 static void so_point(struct pt_so_emit
*so
, int idx
)
224 so_emit_prim(so
, indices
, 1);
227 static void so_line(struct pt_so_emit
*so
, int i0
, int i1
)
234 so_emit_prim(so
, indices
, 2);
237 static void so_tri(struct pt_so_emit
*so
, int i0
, int i1
, int i2
)
245 so_emit_prim(so
, indices
, 3);
249 #define FUNC so_run_linear
250 #define GET_ELT(idx) (start + (idx))
251 #include "draw_so_emit_tmp.h"
254 #define FUNC so_run_elts
255 #define LOCAL_VARS const ushort *elts = input_prims->elts;
256 #define GET_ELT(idx) (elts[start + (idx)])
257 #include "draw_so_emit_tmp.h"
260 void draw_pt_so_emit( struct pt_so_emit
*emit
,
261 const struct draw_vertex_info
*input_verts
,
262 const struct draw_prim_info
*input_prims
)
264 struct draw_context
*draw
= emit
->draw
;
265 struct vbuf_render
*render
= draw
->render
;
271 if (!draw
->so
.num_targets
)
274 emit
->emitted_primitives
= 0;
275 emit
->generated_primitives
= 0;
276 emit
->input_vertex_stride
= input_verts
->stride
;
277 if (emit
->use_pre_clip_pos
)
278 emit
->pre_clip_pos
= input_verts
->verts
->clip_pos
;
280 emit
->inputs
= (const float (*)[4])input_verts
->verts
->data
;
282 /* XXX: need to flush to get prim_vbuf.c to release its allocation??*/
283 draw_do_flush( draw
, DRAW_FLUSH_BACKEND
);
285 for (start
= i
= 0; i
< input_prims
->primitive_count
;
286 start
+= input_prims
->primitive_lengths
[i
], i
++)
288 unsigned count
= input_prims
->primitive_lengths
[i
];
290 if (input_prims
->linear
) {
291 so_run_linear(emit
, input_prims
, input_verts
,
294 so_run_elts(emit
, input_prims
, input_verts
,
299 render
->set_stream_output_info(render
,
300 emit
->emitted_primitives
,
301 emit
->generated_primitives
);
305 struct pt_so_emit
*draw_pt_so_emit_create( struct draw_context
*draw
)
307 struct pt_so_emit
*emit
= CALLOC_STRUCT(pt_so_emit
);
316 void draw_pt_so_emit_destroy( struct pt_so_emit
*emit
)