1 /**************************************************************************
3 * Copyright 2007 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 **************************************************************************/
30 * Keith Whitwell <keithw@vmware.com>
34 #include "util/u_math.h"
35 #include "util/u_memory.h"
36 #include "pipe/p_shader_tokens.h"
38 #include "draw_private.h"
39 #include "draw_context.h"
42 #include "tgsi/tgsi_parse.h"
43 #include "tgsi/tgsi_scan.h"
44 #include "tgsi/tgsi_exec.h"
47 struct exec_vertex_shader
{
48 struct draw_vertex_shader base
;
49 struct tgsi_exec_machine
*machine
;
52 static struct exec_vertex_shader
*exec_vertex_shader( struct draw_vertex_shader
*vs
)
54 return (struct exec_vertex_shader
*)vs
;
58 /* Not required for run_linear.
61 vs_exec_prepare( struct draw_vertex_shader
*shader
,
62 struct draw_context
*draw
)
64 struct exec_vertex_shader
*evs
= exec_vertex_shader(shader
);
66 debug_assert(!draw
->llvm
);
67 /* Specify the vertex program to interpret/execute.
68 * Avoid rebinding when possible.
70 if (evs
->machine
->Tokens
!= shader
->state
.tokens
) {
71 tgsi_exec_machine_bind_shader(evs
->machine
,
73 draw
->vs
.tgsi
.sampler
,
75 draw
->vs
.tgsi
.buffer
);
82 /* Simplified vertex shader interface for the pt paths. Given the
83 * complexity of code-generating all the above operations together,
84 * it's time to try doing all the other stuff separately.
87 vs_exec_run_linear( struct draw_vertex_shader
*shader
,
88 const float (*input
)[4],
90 const void *constants
[PIPE_MAX_CONSTANT_BUFFERS
],
91 const unsigned const_size
[PIPE_MAX_CONSTANT_BUFFERS
],
93 unsigned input_stride
,
94 unsigned output_stride
)
96 struct exec_vertex_shader
*evs
= exec_vertex_shader(shader
);
97 struct tgsi_exec_machine
*machine
= evs
->machine
;
100 boolean clamp_vertex_color
= shader
->draw
->rasterizer
->clamp_vertex_color
;
102 debug_assert(!shader
->draw
->llvm
);
103 tgsi_exec_set_constant_buffers(machine
, PIPE_MAX_CONSTANT_BUFFERS
,
104 constants
, const_size
);
106 if (shader
->info
.uses_instanceid
) {
107 unsigned i
= machine
->SysSemanticToIndex
[TGSI_SEMANTIC_INSTANCEID
];
108 assert(i
< ARRAY_SIZE(machine
->SystemValue
));
109 for (j
= 0; j
< TGSI_QUAD_SIZE
; j
++)
110 machine
->SystemValue
[i
].xyzw
[0].i
[j
] = shader
->draw
->instance_id
;
113 for (i
= 0; i
< count
; i
+= MAX_TGSI_VERTICES
) {
114 unsigned int max_vertices
= MIN2(MAX_TGSI_VERTICES
, count
- i
);
118 for (j
= 0; j
< max_vertices
; j
++) {
120 debug_printf("%d) Input vert:\n", i
+ j
);
121 for (slot
= 0; slot
< shader
->info
.num_inputs
; slot
++) {
122 debug_printf("\t%d: %f %f %f %f\n", slot
,
130 if (shader
->info
.uses_vertexid
) {
131 unsigned vid
= machine
->SysSemanticToIndex
[TGSI_SEMANTIC_VERTEXID
];
132 assert(vid
< ARRAY_SIZE(machine
->SystemValue
));
133 machine
->SystemValue
[vid
].xyzw
[0].i
[j
] = i
+ j
;
134 /* XXX this should include base vertex. Where to get it??? */
136 if (shader
->info
.uses_basevertex
) {
137 unsigned vid
= machine
->SysSemanticToIndex
[TGSI_SEMANTIC_BASEVERTEX
];
138 assert(vid
< ARRAY_SIZE(machine
->SystemValue
));
139 machine
->SystemValue
[vid
].xyzw
[0].i
[j
] = 0;
140 /* XXX Where to get it??? */
142 if (shader
->info
.uses_vertexid_nobase
) {
143 unsigned vid
= machine
->SysSemanticToIndex
[TGSI_SEMANTIC_VERTEXID_NOBASE
];
144 assert(vid
< ARRAY_SIZE(machine
->SystemValue
));
145 machine
->SystemValue
[vid
].xyzw
[0].i
[j
] = i
+ j
;
148 for (slot
= 0; slot
< shader
->info
.num_inputs
; slot
++) {
150 assert(!util_is_inf_or_nan(input
[slot
][0]));
151 assert(!util_is_inf_or_nan(input
[slot
][1]));
152 assert(!util_is_inf_or_nan(input
[slot
][2]));
153 assert(!util_is_inf_or_nan(input
[slot
][3]));
155 machine
->Inputs
[slot
].xyzw
[0].f
[j
] = input
[slot
][0];
156 machine
->Inputs
[slot
].xyzw
[1].f
[j
] = input
[slot
][1];
157 machine
->Inputs
[slot
].xyzw
[2].f
[j
] = input
[slot
][2];
158 machine
->Inputs
[slot
].xyzw
[3].f
[j
] = input
[slot
][3];
161 input
= (const float (*)[4])((const char *)input
+ input_stride
);
164 machine
->NonHelperMask
= (1 << max_vertices
) - 1;
165 /* run interpreter */
166 tgsi_exec_machine_run( machine
, 0 );
168 /* Unswizzle all output results.
170 for (j
= 0; j
< max_vertices
; j
++) {
171 for (slot
= 0; slot
< shader
->info
.num_outputs
; slot
++) {
172 unsigned name
= shader
->info
.output_semantic_name
[slot
];
173 if(clamp_vertex_color
&&
174 (name
== TGSI_SEMANTIC_COLOR
|| name
== TGSI_SEMANTIC_BCOLOR
))
176 output
[slot
][0] = CLAMP(machine
->Outputs
[slot
].xyzw
[0].f
[j
], 0.0f
, 1.0f
);
177 output
[slot
][1] = CLAMP(machine
->Outputs
[slot
].xyzw
[1].f
[j
], 0.0f
, 1.0f
);
178 output
[slot
][2] = CLAMP(machine
->Outputs
[slot
].xyzw
[2].f
[j
], 0.0f
, 1.0f
);
179 output
[slot
][3] = CLAMP(machine
->Outputs
[slot
].xyzw
[3].f
[j
], 0.0f
, 1.0f
);
183 output
[slot
][0] = machine
->Outputs
[slot
].xyzw
[0].f
[j
];
184 output
[slot
][1] = machine
->Outputs
[slot
].xyzw
[1].f
[j
];
185 output
[slot
][2] = machine
->Outputs
[slot
].xyzw
[2].f
[j
];
186 output
[slot
][3] = machine
->Outputs
[slot
].xyzw
[3].f
[j
];
191 debug_printf("%d) Post xform vert:\n", i
+ j
);
192 for (slot
= 0; slot
< shader
->info
.num_outputs
; slot
++) {
193 debug_printf("\t%d: %f %f %f %f\n", slot
,
198 assert(!util_is_inf_or_nan(output
[slot
][0]));
202 output
= (float (*)[4])((char *)output
+ output_stride
);
212 vs_exec_delete( struct draw_vertex_shader
*dvs
)
214 FREE((void*) dvs
->state
.tokens
);
219 struct draw_vertex_shader
*
220 draw_create_vs_exec(struct draw_context
*draw
,
221 const struct pipe_shader_state
*state
)
223 struct exec_vertex_shader
*vs
= CALLOC_STRUCT( exec_vertex_shader
);
228 /* we make a private copy of the tokens */
229 vs
->base
.state
.tokens
= tgsi_dup_tokens(state
->tokens
);
230 if (!vs
->base
.state
.tokens
) {
235 tgsi_scan_shader(state
->tokens
, &vs
->base
.info
);
237 vs
->base
.state
.stream_output
= state
->stream_output
;
238 vs
->base
.draw
= draw
;
239 vs
->base
.prepare
= vs_exec_prepare
;
240 vs
->base
.run_linear
= vs_exec_run_linear
;
241 vs
->base
.delete = vs_exec_delete
;
242 vs
->base
.create_variant
= draw_vs_create_variant_generic
;
243 vs
->machine
= draw
->vs
.tgsi
.machine
;