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 "radeon_compiler.h"
37 /* Convert info about VS output semantics into r300_shader_semantics. */
38 static void r300_shader_read_vs_outputs(
39 struct tgsi_shader_info
* info
,
40 struct r300_shader_semantics
* vs_outputs
)
45 r300_shader_semantics_reset(vs_outputs
);
47 for (i
= 0; i
< info
->num_outputs
; i
++) {
48 index
= info
->output_semantic_index
[i
];
50 switch (info
->output_semantic_name
[i
]) {
51 case TGSI_SEMANTIC_POSITION
:
56 case TGSI_SEMANTIC_PSIZE
:
58 vs_outputs
->psize
= i
;
61 case TGSI_SEMANTIC_COLOR
:
62 assert(index
< ATTR_COLOR_COUNT
);
63 vs_outputs
->color
[index
] = i
;
66 case TGSI_SEMANTIC_BCOLOR
:
67 assert(index
< ATTR_COLOR_COUNT
);
68 vs_outputs
->bcolor
[index
] = i
;
71 case TGSI_SEMANTIC_GENERIC
:
72 assert(index
< ATTR_GENERIC_COUNT
);
73 vs_outputs
->generic
[index
] = i
;
76 case TGSI_SEMANTIC_FOG
:
81 case TGSI_SEMANTIC_EDGEFLAG
:
83 fprintf(stderr
, "r300 VP: cannot handle edgeflag output.\n");
87 fprintf(stderr
, "r300 VP: unknown vertex output semantic: %i.\n",
88 info
->output_semantic_name
[i
]);
92 /* WPOS is a straight copy of POSITION and it's always emitted. */
96 static void set_vertex_inputs_outputs(struct r300_vertex_program_compiler
* c
)
98 struct r300_vertex_shader
* vs
= c
->UserData
;
99 struct r300_shader_semantics
* outputs
= &vs
->outputs
;
100 struct tgsi_shader_info
* info
= &vs
->info
;
102 boolean any_bcolor_used
= outputs
->bcolor
[0] != ATTR_UNUSED
||
103 outputs
->bcolor
[1] != ATTR_UNUSED
;
105 /* Fill in the input mapping */
106 for (i
= 0; i
< info
->num_inputs
; i
++)
107 c
->code
->inputs
[i
] = i
;
110 if (outputs
->pos
!= ATTR_UNUSED
) {
111 c
->code
->outputs
[outputs
->pos
] = reg
++;
117 if (outputs
->psize
!= ATTR_UNUSED
) {
118 c
->code
->outputs
[outputs
->psize
] = reg
++;
121 /* If we're writing back facing colors we need to send
122 * four colors to make front/back face colors selection work.
123 * If the vertex program doesn't write all 4 colors, lets
124 * pretend it does by skipping output index reg so the colors
125 * get written into appropriate output vectors.
129 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
130 if (outputs
->color
[i
] != ATTR_UNUSED
) {
131 c
->code
->outputs
[outputs
->color
[i
]] = reg
++;
132 } else if (any_bcolor_used
||
133 outputs
->color
[1] != ATTR_UNUSED
) {
138 /* Back-face colors. */
139 for (i
= 0; i
< ATTR_COLOR_COUNT
; i
++) {
140 if (outputs
->bcolor
[i
] != ATTR_UNUSED
) {
141 c
->code
->outputs
[outputs
->bcolor
[i
]] = reg
++;
142 } else if (any_bcolor_used
) {
147 /* Texture coordinates. */
148 for (i
= 0; i
< ATTR_GENERIC_COUNT
; i
++) {
149 if (outputs
->generic
[i
] != ATTR_UNUSED
) {
150 c
->code
->outputs
[outputs
->generic
[i
]] = reg
++;
154 /* Fog coordinates. */
155 if (outputs
->fog
!= ATTR_UNUSED
) {
156 c
->code
->outputs
[outputs
->fog
] = reg
++;
160 c
->code
->outputs
[outputs
->wpos
] = reg
++;
163 void r300_init_vs_outputs(struct r300_vertex_shader
*vs
)
165 tgsi_scan_shader(vs
->state
.tokens
, &vs
->info
);
166 r300_shader_read_vs_outputs(&vs
->info
, &vs
->outputs
);
169 static void r300_dummy_vertex_shader(
170 struct r300_context
* r300
,
171 struct r300_vertex_shader
* shader
)
173 struct ureg_program
*ureg
;
177 /* Make a simple vertex shader which outputs (0, 0, 0, 1),
178 * effectively rendering nothing. */
179 ureg
= ureg_create(TGSI_PROCESSOR_VERTEX
);
180 dst
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_POSITION
, 0);
181 imm
= ureg_imm4f(ureg
, 0, 0, 0, 1);
183 ureg_MOV(ureg
, dst
, imm
);
186 shader
->state
.tokens
= tgsi_dup_tokens(ureg_finalize(ureg
));
189 shader
->dummy
= TRUE
;
190 r300_init_vs_outputs(shader
);
191 r300_translate_vertex_shader(r300
, shader
);
194 void r300_translate_vertex_shader(struct r300_context
*r300
,
195 struct r300_vertex_shader
*vs
)
197 struct r300_vertex_program_compiler compiler
;
198 struct tgsi_to_rc ttr
;
200 /* Setup the compiler */
201 rc_init(&compiler
.Base
);
203 compiler
.Base
.Debug
= DBG_ON(r300
, DBG_VP
);
204 compiler
.code
= &vs
->code
;
205 compiler
.UserData
= vs
;
206 compiler
.Base
.is_r500
= r300
->screen
->caps
.is_r500
;
207 compiler
.Base
.max_temp_regs
= 32;
209 if (compiler
.Base
.Debug
) {
210 DBG(r300
, DBG_VP
, "r300: Initial vertex program\n");
211 tgsi_dump(vs
->state
.tokens
, 0);
214 /* Translate TGSI to our internal representation */
215 ttr
.compiler
= &compiler
.Base
;
216 ttr
.info
= &vs
->info
;
217 ttr
.use_half_swizzles
= FALSE
;
219 r300_tgsi_to_rc(&ttr
, vs
->state
.tokens
);
221 compiler
.RequiredOutputs
= ~(~0 << (vs
->info
.num_outputs
+ 1));
222 compiler
.SetHwInputOutput
= &set_vertex_inputs_outputs
;
224 /* Insert the WPOS output. */
225 rc_copy_output(&compiler
.Base
, 0, vs
->outputs
.wpos
);
227 /* Invoke the compiler */
228 r3xx_compile_vertex_program(&compiler
);
229 if (compiler
.Base
.Error
) {
230 DBG(r300
, DBG_VP
, "r300 VP: Compiler error:\n%sUsing a dummy shader"
231 " instead.\nIf there's an 'unknown opcode' message, please"
232 " file a bug report and attach this log.\n", compiler
.Base
.ErrorMsg
);
235 fprintf(stderr
, "r300 VP: Cannot compile the dummy shader! "
240 rc_destroy(&compiler
.Base
);
241 r300_dummy_vertex_shader(r300
, vs
);
245 /* Initialize numbers of constants for each type. */
246 vs
->externals_count
= ttr
.immediate_offset
;
247 vs
->immediates_count
= vs
->code
.constants
.Count
- vs
->externals_count
;
249 /* And, finally... */
250 rc_destroy(&compiler
.Base
);