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_context.h"
31 #include "draw/draw_vbuf.h"
32 #include "draw/draw_vertex.h"
33 #include "draw/draw_pt.h"
35 #include "pipe/p_state.h"
37 #include "util/u_math.h"
38 #include "util/u_memory.h"
41 struct draw_context
*draw
;
43 unsigned input_vertex_stride
;
44 const float (*inputs
)[4];
48 unsigned emitted_primitives
;
49 unsigned emitted_vertices
;
50 unsigned generated_primitives
;
54 void draw_pt_so_emit_prepare(struct pt_so_emit
*emit
)
56 struct draw_context
*draw
= emit
->draw
;
58 emit
->has_so
= (draw
->vs
.vertex_shader
->state
.stream_output
.num_outputs
> 0);
60 /* if we have a state with outputs make sure we have
61 * buffers to output to */
63 boolean has_valid_buffer
= FALSE
;
65 for (i
= 0; i
< draw
->so
.num_targets
; ++i
) {
66 if (draw
->so
.targets
[i
]) {
67 has_valid_buffer
= TRUE
;
71 emit
->has_so
= has_valid_buffer
;
77 /* XXX: need to flush to get prim_vbuf.c to release its allocation??
79 draw_do_flush( draw
, DRAW_FLUSH_BACKEND
);
82 static void so_emit_prim(struct pt_so_emit
*so
,
84 unsigned num_vertices
)
87 unsigned input_vertex_stride
= so
->input_vertex_stride
;
88 struct draw_context
*draw
= so
->draw
;
89 const float (*input_ptr
)[4];
90 const struct pipe_stream_output_info
*state
=
91 &draw
->vs
.vertex_shader
->state
.stream_output
;
93 int buffer_total_bytes
[PIPE_MAX_SO_BUFFERS
];
95 input_ptr
= so
->inputs
;
97 ++so
->generated_primitives
;
99 for (i
= 0; i
< draw
->so
.num_targets
; i
++) {
100 struct draw_so_target
*target
= draw
->so
.targets
[i
];
101 buffer_total_bytes
[i
] = target
->internal_offset
;
104 /* check have we space to emit prim first - if not don't do anything */
105 for (i
= 0; i
< num_vertices
; ++i
) {
106 for (slot
= 0; slot
< state
->num_outputs
; ++slot
) {
107 unsigned num_comps
= state
->output
[slot
].num_components
;
108 int ob
= state
->output
[slot
].output_buffer
;
110 if ((buffer_total_bytes
[ob
] + num_comps
* sizeof(float)) >
111 draw
->so
.targets
[ob
]->target
.buffer_size
) {
114 buffer_total_bytes
[ob
] += num_comps
* sizeof(float);
118 for (i
= 0; i
< num_vertices
; ++i
) {
119 const float (*input
)[4];
120 unsigned total_written_compos
= 0;
121 /*debug_printf("%d) vertex index = %d (prim idx = %d)\n", i, indices[i], prim_idx);*/
122 input
= (const float (*)[4])(
123 (const char *)input_ptr
+ (indices
[i
] * input_vertex_stride
));
125 for (slot
= 0; slot
< state
->num_outputs
; ++slot
) {
126 unsigned idx
= state
->output
[slot
].register_index
;
127 unsigned start_comp
= state
->output
[slot
].start_component
;
128 unsigned num_comps
= state
->output
[slot
].num_components
;
129 int ob
= state
->output
[slot
].output_buffer
;
131 buffer
= (float *)((char *)draw
->so
.targets
[ob
]->mapping
+
132 draw
->so
.targets
[ob
]->target
.buffer_offset
+
133 draw
->so
.targets
[ob
]->internal_offset
);
134 memcpy(buffer
, &input
[idx
][start_comp
], num_comps
* sizeof(float));
135 draw
->so
.targets
[ob
]->internal_offset
+= num_comps
* sizeof(float);
136 total_written_compos
+= num_comps
;
139 so
->emitted_vertices
+= num_vertices
;
140 ++so
->emitted_primitives
;
143 static void so_point(struct pt_so_emit
*so
, int idx
)
149 so_emit_prim(so
, indices
, 1);
152 static void so_line(struct pt_so_emit
*so
, int i0
, int i1
)
159 so_emit_prim(so
, indices
, 2);
162 static void so_tri(struct pt_so_emit
*so
, int i0
, int i1
, int i2
)
170 so_emit_prim(so
, indices
, 3);
174 #define FUNC so_run_linear
175 #define GET_ELT(idx) (start + (idx))
176 #include "draw_so_emit_tmp.h"
179 #define FUNC so_run_elts
180 #define LOCAL_VARS const ushort *elts = input_prims->elts;
181 #define GET_ELT(idx) (elts[start + (idx)])
182 #include "draw_so_emit_tmp.h"
185 void draw_pt_so_emit( struct pt_so_emit
*emit
,
186 const struct draw_vertex_info
*input_verts
,
187 const struct draw_prim_info
*input_prims
)
189 struct draw_context
*draw
= emit
->draw
;
190 struct vbuf_render
*render
= draw
->render
;
196 emit
->emitted_vertices
= 0;
197 emit
->emitted_primitives
= 0;
198 emit
->generated_primitives
= 0;
199 emit
->input_vertex_stride
= input_verts
->stride
;
200 emit
->inputs
= (const float (*)[4])input_verts
->verts
->data
;
202 /* XXX: need to flush to get prim_vbuf.c to release its allocation??*/
203 draw_do_flush( draw
, DRAW_FLUSH_BACKEND
);
205 for (start
= i
= 0; i
< input_prims
->primitive_count
;
206 start
+= input_prims
->primitive_lengths
[i
], i
++)
208 unsigned count
= input_prims
->primitive_lengths
[i
];
210 if (input_prims
->linear
) {
211 so_run_linear(emit
, input_prims
, input_verts
,
214 so_run_elts(emit
, input_prims
, input_verts
,
219 render
->set_stream_output_info(render
,
220 emit
->emitted_primitives
,
221 emit
->emitted_vertices
,
222 emit
->generated_primitives
);
226 struct pt_so_emit
*draw_pt_so_emit_create( struct draw_context
*draw
)
228 struct pt_so_emit
*emit
= CALLOC_STRUCT(pt_so_emit
);
237 void draw_pt_so_emit_destroy( struct pt_so_emit
*emit
)