1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
26 #include "util/u_inlines.h"
27 #include "pipe/p_defines.h"
28 #include "util/u_format.h"
29 #include "util/u_math.h"
30 #include "util/u_memory.h"
31 #include "util/u_bitmask.h"
32 #include "translate/translate.h"
33 #include "tgsi/tgsi_ureg.h"
35 #include "svga_context.h"
36 #include "svga_state.h"
38 #include "svga_shader.h"
39 #include "svga_tgsi.h"
41 #include "svga_hw_reg.h"
45 compare_vs_keys(const struct svga_vs_compile_key
*a
,
46 const struct svga_vs_compile_key
*b
)
48 unsigned keysize
= svga_vs_key_size( a
);
49 return memcmp( a
, b
, keysize
);
53 /** Search for a vertex shader variant */
54 static struct svga_shader_variant
*
55 search_vs_key(const struct svga_vertex_shader
*vs
,
56 const struct svga_vs_compile_key
*key
)
58 struct svga_shader_variant
*variant
= vs
->base
.variants
;
62 for ( ; variant
; variant
= variant
->next
) {
63 if (compare_vs_keys( key
, &variant
->key
.vkey
) == 0)
72 * If we fail to compile a vertex shader we'll use a dummy/fallback shader
73 * that simply emits a (0,0,0,1) vertex position.
75 static const struct tgsi_token
*
76 get_dummy_vertex_shader(void)
78 static const float zero
[4] = { 0.0, 0.0, 0.0, 1.0 };
79 struct ureg_program
*ureg
;
80 const struct tgsi_token
*tokens
;
85 ureg
= ureg_create(TGSI_PROCESSOR_VERTEX
);
89 dst
= ureg_DECL_output(ureg
, TGSI_SEMANTIC_POSITION
, 0);
90 src
= ureg_DECL_immediate(ureg
, zero
, 4);
91 ureg_MOV(ureg
, dst
, src
);
94 tokens
= ureg_get_tokens(ureg
, &num_tokens
);
103 * Replace the given shader's instruction with a simple / dummy shader.
104 * We use this when normal shader translation fails.
106 static struct svga_shader_variant
*
107 get_compiled_dummy_vertex_shader(struct svga_vertex_shader
*vs
,
108 const struct svga_vs_compile_key
*key
)
110 const struct tgsi_token
*dummy
= get_dummy_vertex_shader();
111 struct svga_shader_variant
*variant
;
117 FREE((void *) vs
->base
.tokens
);
118 vs
->base
.tokens
= dummy
;
120 variant
= svga_translate_vertex_program(vs
, key
);
126 * Translate TGSI shader into an svga shader variant.
128 static enum pipe_error
129 compile_vs(struct svga_context
*svga
,
130 struct svga_vertex_shader
*vs
,
131 const struct svga_vs_compile_key
*key
,
132 struct svga_shader_variant
**out_variant
)
134 struct svga_shader_variant
*variant
;
135 enum pipe_error ret
= PIPE_ERROR
;
137 variant
= svga_translate_vertex_program( vs
, key
);
138 if (variant
== NULL
) {
139 /* some problem during translation, try the dummy shader */
140 variant
= get_compiled_dummy_vertex_shader(vs
, key
);
147 if (svga_shader_too_large(svga
, variant
)) {
148 /* too big, use dummy shader */
149 debug_printf("Shader too large (%lu bytes),"
150 " using dummy shader instead.\n",
151 (unsigned long ) variant
->nr_tokens
152 * sizeof(variant
->tokens
[0]));
153 variant
= get_compiled_dummy_vertex_shader(vs
, key
);
160 ret
= svga_define_shader(svga
, SVGA3D_SHADERTYPE_VS
, variant
);
164 *out_variant
= variant
;
166 /* insert variants at head of linked list */
167 variant
->next
= vs
->base
.variants
;
168 vs
->base
.variants
= variant
;
174 svga_destroy_shader_variant(svga
, SVGA3D_SHADERTYPE_VS
, variant
);
179 /* SVGA_NEW_PRESCALE, SVGA_NEW_RAST, SVGA_NEW_FS
182 make_vs_key(struct svga_context
*svga
, struct svga_vs_compile_key
*key
)
184 memset(key
, 0, sizeof *key
);
185 key
->need_prescale
= svga
->state
.hw_clear
.prescale
.enabled
;
186 key
->allow_psiz
= svga
->curr
.rast
->templ
.point_size_per_vertex
;
189 key
->fs_generic_inputs
= svga
->curr
.fs
->generic_inputs
;
191 /* SVGA_NEW_VELEMENT */
192 key
->adjust_attrib_range
= svga
->curr
.velems
->adjust_attrib_range
;
193 key
->adjust_attrib_w_1
= svga
->curr
.velems
->adjust_attrib_w_1
;
198 * svga_reemit_vs_bindings - Reemit the vertex shader bindings
201 svga_reemit_vs_bindings(struct svga_context
*svga
)
204 struct svga_winsys_gb_shader
*gbshader
=
205 svga
->state
.hw_draw
.vs
? svga
->state
.hw_draw
.vs
->gb_shader
: NULL
;
207 assert(svga
->rebind
.vs
);
208 assert(svga_have_gb_objects(svga
));
210 ret
= SVGA3D_SetGBShader(svga
->swc
, SVGA3D_SHADERTYPE_VS
, gbshader
);
214 svga
->rebind
.vs
= FALSE
;
219 static enum pipe_error
220 emit_hw_vs(struct svga_context
*svga
, unsigned dirty
)
222 struct svga_shader_variant
*variant
= NULL
;
223 enum pipe_error ret
= PIPE_OK
;
225 /* SVGA_NEW_NEED_SWTNL */
226 if (!svga
->state
.sw
.need_swtnl
) {
227 struct svga_vertex_shader
*vs
= svga
->curr
.vs
;
228 struct svga_vs_compile_key key
;
230 make_vs_key( svga
, &key
);
232 variant
= search_vs_key( vs
, &key
);
234 ret
= compile_vs( svga
, vs
, &key
, &variant
);
242 if (variant
!= svga
->state
.hw_draw
.vs
) {
243 if (svga_have_gb_objects(svga
)) {
244 struct svga_winsys_gb_shader
*gbshader
=
245 variant
? variant
->gb_shader
: NULL
;
246 ret
= SVGA3D_SetGBShader(svga
->swc
, SVGA3D_SHADERTYPE_VS
, gbshader
);
250 svga
->rebind
.vs
= FALSE
;
253 unsigned id
= variant
? variant
->id
: SVGA_ID_INVALID
;
254 ret
= SVGA3D_SetShader(svga
->swc
, SVGA3D_SHADERTYPE_VS
, id
);
259 svga
->dirty
|= SVGA_NEW_VS_VARIANT
;
260 svga
->state
.hw_draw
.vs
= variant
;
266 struct svga_tracked_state svga_hw_vs
=
268 "vertex shader (hwtnl)",
273 SVGA_NEW_NEED_SWTNL
),