2 * Copyright 2009 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
26 #include "r300_context.h"
27 #include "r300_screen.h"
28 #include "r300_tgsi_to_rc.h"
31 #include "tgsi/tgsi_dump.h"
32 #include "tgsi/tgsi_parse.h"
33 #include "tgsi/tgsi_ureg.h"
35 #include "compiler/radeon_compiler.h"
37 /* Convert info about VS output semantics into r300_shader_semantics. */
38 static void r300_shader_read_vs_outputs(
39 struct r300_context
*r300
,
40 struct tgsi_shader_info
* info
,
41 struct r300_shader_semantics
* vs_outputs
)
46 r300_shader_semantics_reset(vs_outputs
);
48 for (i
= 0; i
< info
->num_outputs
; i
++) {
49 index
= info
->output_semantic_index
[i
];
51 switch (info
->output_semantic_name
[i
]) {
52 case TGSI_SEMANTIC_POSITION
:
57 case TGSI_SEMANTIC_PSIZE
:
59 vs_outputs
->psize
= i
;
62 case TGSI_SEMANTIC_COLOR
:
63 assert(index
< ATTR_COLOR_COUNT
);
64 vs_outputs
->color
[index
] = i
;
67 case TGSI_SEMANTIC_BCOLOR
:
68 assert(index
< ATTR_COLOR_COUNT
);
69 vs_outputs
->bcolor
[index
] = i
;
72 case TGSI_SEMANTIC_GENERIC
:
73 assert(index
< ATTR_GENERIC_COUNT
);
74 vs_outputs
->generic
[index
] = i
;
77 case TGSI_SEMANTIC_FOG
:
82 case TGSI_SEMANTIC_EDGEFLAG
:
84 fprintf(stderr
, "r300 VP: cannot handle edgeflag output.\n");
87 case TGSI_SEMANTIC_CLIPVERTEX
:
89 /* Draw does clip vertex for us. */
90 if (r300
->screen
->caps
.has_tcl
) {
91 fprintf(stderr
, "r300 VP: cannot handle clip vertex output.\n");
96 fprintf(stderr
, "r300 VP: unknown vertex output semantic: %i.\n",
97 info
->output_semantic_name
[i
]);
101 /* WPOS is a straight copy of POSITION and it's always emitted. */
102 vs_outputs
->wpos
= i
;
105 static void set_vertex_inputs_outputs(struct r300_vertex_program_compiler
* c
)
107 struct r300_vertex_shader
* vs
= c
->UserData
;
108 struct r300_shader_semantics
* outputs
= &vs
->outputs
;
109 struct tgsi_shader_info
* info
= &vs
->info
;
111 boolean any_bcolor_used
= outputs
->bcolor
[0] != ATTR_UNUSED
||
112 outputs
->bcolor
[1] != ATTR_UNUSED
;
114 /* Fill in the input mapping */
115 for (i
= 0; i
< info
->num_inputs
; i
++)
116 c
->code
->inputs
[i
] = i
;
119 if (outputs
->pos
!= ATTR_UNUSED
) {
120 c
->code
->outputs
[outputs
->pos
] = reg
++;
126 if (outputs
->psize
!= ATTR_UNUSED
) {
127 c
->code
->outputs
[outputs
->psize
] = reg
++;
130 /* If we're writing back facing colors we need to send
131 * four colors to make front/back face colors selection work.
132 * If the vertex program doesn't write all 4 colors, lets
133 * pretend it does by skipping output index reg so the colors
134 * get written into appropriate output vectors.
138 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
139 if (outputs
->color
[i
] != ATTR_UNUSED
) {
140 c
->code
->outputs
[outputs
->color
[i
]] = reg
++;
141 } else if (any_bcolor_used
||
142 outputs
->color
[1] != ATTR_UNUSED
) {
147 /* Back-face colors. */
148 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
149 if (outputs
->bcolor
[i
] != ATTR_UNUSED
) {
150 c
->code
->outputs
[outputs
->bcolor
[i
]] = reg
++;
151 } else if (any_bcolor_used
) {
156 /* Texture coordinates. */
157 for (i
= 0; i
< ATTR_GENERIC_COUNT
; i
++) {
158 if (outputs
->generic
[i
] != ATTR_UNUSED
) {
159 c
->code
->outputs
[outputs
->generic
[i
]] = reg
++;
163 /* Fog coordinates. */
164 if (outputs
->fog
!= ATTR_UNUSED
) {
165 c
->code
->outputs
[outputs
->fog
] = reg
++;
169 c
->code
->outputs
[outputs
->wpos
] = reg
++;
172 void r300_init_vs_outputs(struct r300_context
*r300
,
173 struct r300_vertex_shader
*vs
)
175 tgsi_scan_shader(vs
->state
.tokens
, &vs
->info
);
176 r300_shader_read_vs_outputs(r300
, &vs
->info
, &vs
->outputs
);
179 static void r300_dummy_vertex_shader(
180 struct r300_context
* r300
,
181 struct r300_vertex_shader
* shader
)
183 struct ureg_program
*ureg
;
187 /* Make a simple vertex shader which outputs (0, 0, 0, 1),
188 * effectively rendering nothing. */
189 ureg
= ureg_create(TGSI_PROCESSOR_VERTEX
);
190 dst
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_POSITION
, 0);
191 imm
= ureg_imm4f(ureg
, 0, 0, 0, 1);
193 ureg_MOV(ureg
, dst
, imm
);
196 shader
->state
.tokens
= tgsi_dup_tokens(ureg_finalize(ureg
));
199 shader
->dummy
= TRUE
;
200 r300_init_vs_outputs(r300
, shader
);
201 r300_translate_vertex_shader(r300
, shader
);
204 void r300_translate_vertex_shader(struct r300_context
*r300
,
205 struct r300_vertex_shader
*vs
)
207 struct r300_vertex_program_compiler compiler
;
208 struct tgsi_to_rc ttr
;
211 /* Setup the compiler */
212 memset(&compiler
, 0, sizeof(compiler
));
213 rc_init(&compiler
.Base
);
215 DBG_ON(r300
, DBG_VP
) ? compiler
.Base
.Debug
|= RC_DBG_LOG
: 0;
216 DBG_ON(r300
, DBG_P_STAT
) ? compiler
.Base
.Debug
|= RC_DBG_STATS
: 0;
217 compiler
.code
= &vs
->code
;
218 compiler
.UserData
= vs
;
219 compiler
.Base
.is_r500
= r300
->screen
->caps
.is_r500
;
220 compiler
.Base
.disable_optimizations
= DBG_ON(r300
, DBG_NO_OPT
);
221 compiler
.Base
.has_half_swizzles
= FALSE
;
222 compiler
.Base
.has_presub
= FALSE
;
223 compiler
.Base
.has_omod
= FALSE
;
224 compiler
.Base
.max_temp_regs
= 32;
225 compiler
.Base
.max_constants
= 256;
226 compiler
.Base
.max_alu_insts
= r300
->screen
->caps
.is_r500
? 1024 : 256;
228 if (compiler
.Base
.Debug
& RC_DBG_LOG
) {
229 DBG(r300
, DBG_VP
, "r300: Initial vertex program\n");
230 tgsi_dump(vs
->state
.tokens
, 0);
233 /* Translate TGSI to our internal representation */
234 ttr
.compiler
= &compiler
.Base
;
235 ttr
.info
= &vs
->info
;
236 ttr
.use_half_swizzles
= FALSE
;
238 r300_tgsi_to_rc(&ttr
, vs
->state
.tokens
);
241 fprintf(stderr
, "r300 VP: Cannot translate a shader. "
242 "Using a dummy shader instead.\n");
243 r300_dummy_vertex_shader(r300
, vs
);
247 if (compiler
.Base
.Program
.Constants
.Count
> 200) {
248 compiler
.Base
.remove_unused_constants
= TRUE
;
251 compiler
.RequiredOutputs
= ~(~0 << (vs
->info
.num_outputs
+ 1));
252 compiler
.SetHwInputOutput
= &set_vertex_inputs_outputs
;
254 /* Insert the WPOS output. */
255 rc_copy_output(&compiler
.Base
, 0, vs
->outputs
.wpos
);
257 /* Invoke the compiler */
258 r3xx_compile_vertex_program(&compiler
);
259 if (compiler
.Base
.Error
) {
260 fprintf(stderr
, "r300 VP: Compiler error:\n%sUsing a dummy shader"
261 " instead.\n", compiler
.Base
.ErrorMsg
);
264 fprintf(stderr
, "r300 VP: Cannot compile the dummy shader! "
269 rc_destroy(&compiler
.Base
);
270 r300_dummy_vertex_shader(r300
, vs
);
274 /* Initialize numbers of constants for each type. */
275 vs
->externals_count
= 0;
277 i
< vs
->code
.constants
.Count
&&
278 vs
->code
.constants
.Constants
[i
].Type
== RC_CONSTANT_EXTERNAL
; i
++) {
279 vs
->externals_count
= i
+1;
281 for (; i
< vs
->code
.constants
.Count
; i
++) {
282 assert(vs
->code
.constants
.Constants
[i
].Type
== RC_CONSTANT_IMMEDIATE
);
284 vs
->immediates_count
= vs
->code
.constants
.Count
- vs
->externals_count
;
286 /* And, finally... */
287 rc_destroy(&compiler
.Base
);