2 Copyright (C) Intel Corp. 2006. All Rights Reserved.
3 Intel funded Tungsten Graphics to
4 develop this 3D driver.
6 Permission is hereby granted, free of charge, to any person obtaining
7 a 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, sublicense, 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
16 portions of the Software.
18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **********************************************************************/
29 * Keith Whitwell <keithw@vmware.com>
33 #include "main/compiler.h"
34 #include "main/context.h"
35 #include "brw_context.h"
38 #include "brw_state.h"
39 #include "program/prog_print.h"
40 #include "program/prog_parameter.h"
42 #include "brw_program.h"
44 #include "util/ralloc.h"
47 brw_vs_outputs_written(struct brw_context
*brw
, struct brw_vs_prog_key
*key
,
48 GLbitfield64 user_varyings
)
50 GLbitfield64 outputs_written
= user_varyings
;
52 if (key
->copy_edgeflag
) {
53 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_EDGE
);
57 /* Put dummy slots into the VUE for the SF to put the replaced
58 * point sprite coords in. We shouldn't need these dummy slots,
59 * which take up precious URB space, but it would mean that the SF
60 * doesn't get nice aligned pairs of input coords into output
61 * coords, which would be a pain to handle.
63 for (unsigned i
= 0; i
< 8; i
++) {
64 if (key
->point_coord_replace
& (1 << i
))
65 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_TEX0
+ i
);
68 /* if back colors are written, allocate slots for front colors too */
69 if (outputs_written
& BITFIELD64_BIT(VARYING_SLOT_BFC0
))
70 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_COL0
);
71 if (outputs_written
& BITFIELD64_BIT(VARYING_SLOT_BFC1
))
72 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_COL1
);
75 /* In order for legacy clipping to work, we need to populate the clip
76 * distance varying slots whenever clipping is enabled, even if the vertex
77 * shader doesn't write to gl_ClipDistance.
79 if (key
->nr_userclip_plane_consts
> 0) {
80 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0
);
81 outputs_written
|= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1
);
84 return outputs_written
;
88 brw_codegen_vs_prog(struct brw_context
*brw
,
89 struct gl_shader_program
*prog
,
90 struct brw_program
*vp
,
91 struct brw_vs_prog_key
*key
)
93 const struct brw_compiler
*compiler
= brw
->screen
->compiler
;
94 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
96 const GLuint
*program
;
97 struct brw_vs_prog_data prog_data
;
98 struct brw_stage_prog_data
*stage_prog_data
= &prog_data
.base
.base
;
100 struct brw_shader
*vs
= NULL
;
101 bool start_busy
= false;
102 double start_time
= 0;
105 vs
= (struct brw_shader
*) prog
->_LinkedShaders
[MESA_SHADER_VERTEX
];
107 memset(&prog_data
, 0, sizeof(prog_data
));
109 /* Use ALT floating point mode for ARB programs so that 0^0 == 1. */
111 stage_prog_data
->use_alt_mode
= true;
113 mem_ctx
= ralloc_context(NULL
);
115 brw_assign_common_binding_table_offsets(MESA_SHADER_VERTEX
, devinfo
, prog
,
116 &vp
->program
, &prog_data
.base
.base
,
119 /* Allocate the references to the uniforms that will end up in the
120 * prog_data associated with the compiled program, and which will be freed
121 * by the state cache.
123 int param_count
= vp
->program
.nir
->num_uniforms
/ 4;
126 prog_data
.base
.base
.nr_image_params
= vs
->base
.NumImages
;
128 /* vec4_visitor::setup_uniform_clipplane_values() also uploads user clip
129 * planes as uniforms.
131 param_count
+= key
->nr_userclip_plane_consts
* 4;
133 stage_prog_data
->param
=
134 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
135 stage_prog_data
->pull_param
=
136 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
137 stage_prog_data
->image_param
=
138 rzalloc_array(NULL
, struct brw_image_param
,
139 stage_prog_data
->nr_image_params
);
140 stage_prog_data
->nr_params
= param_count
;
143 brw_nir_setup_glsl_uniforms(vp
->program
.nir
, prog
, &vp
->program
,
144 &prog_data
.base
.base
,
145 compiler
->scalar_stage
[MESA_SHADER_VERTEX
]);
147 brw_nir_setup_arb_uniforms(vp
->program
.nir
, &vp
->program
,
148 &prog_data
.base
.base
);
151 uint64_t outputs_written
=
152 brw_vs_outputs_written(brw
, key
, vp
->program
.info
.outputs_written
);
153 prog_data
.inputs_read
= vp
->program
.info
.inputs_read
;
154 prog_data
.double_inputs_read
= vp
->program
.info
.double_inputs_read
;
156 if (key
->copy_edgeflag
) {
157 prog_data
.inputs_read
|= VERT_BIT_EDGEFLAG
;
160 prog_data
.base
.cull_distance_mask
=
161 ((1 << vp
->program
.CullDistanceArraySize
) - 1) <<
162 vp
->program
.ClipDistanceArraySize
;
164 brw_compute_vue_map(devinfo
,
165 &prog_data
.base
.vue_map
, outputs_written
,
166 prog
? prog
->SeparateShader
||
167 prog
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]
171 _mesa_fprint_program_opt(stderr
, &vp
->program
, PROG_PRINT_DEBUG
, true);
174 if (unlikely(brw
->perf_debug
)) {
175 start_busy
= (brw
->batch
.last_bo
&&
176 drm_intel_bo_busy(brw
->batch
.last_bo
));
177 start_time
= get_time();
180 if (unlikely(INTEL_DEBUG
& DEBUG_VS
)) {
181 brw_dump_ir("vertex", prog
, vs
? &vs
->base
: NULL
, &vp
->program
);
183 fprintf(stderr
, "VS Output ");
184 brw_print_vue_map(stderr
, &prog_data
.base
.vue_map
);
188 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
189 st_index
= brw_get_shader_time_index(brw
, prog
, &vp
->program
, ST_VS
);
194 program
= brw_compile_vs(compiler
, brw
, mem_ctx
, key
, &prog_data
,
196 brw_select_clip_planes(&brw
->ctx
),
197 !_mesa_is_gles3(&brw
->ctx
),
198 st_index
, &program_size
, &error_str
);
199 if (program
== NULL
) {
201 prog
->LinkStatus
= false;
202 ralloc_strcat(&prog
->InfoLog
, error_str
);
205 _mesa_problem(NULL
, "Failed to compile vertex shader: %s\n", error_str
);
207 ralloc_free(mem_ctx
);
211 if (unlikely(brw
->perf_debug
) && vs
) {
212 if (vs
->compiled_once
) {
213 brw_vs_debug_recompile(brw
, prog
, key
);
215 if (start_busy
&& !drm_intel_bo_busy(brw
->batch
.last_bo
)) {
216 perf_debug("VS compile took %.03f ms and stalled the GPU\n",
217 (get_time() - start_time
) * 1000);
219 vs
->compiled_once
= true;
222 /* Scratch space is used for register spilling */
223 brw_alloc_stage_scratch(brw
, &brw
->vs
.base
,
224 prog_data
.base
.base
.total_scratch
,
225 devinfo
->max_vs_threads
);
227 brw_upload_cache(&brw
->cache
, BRW_CACHE_VS_PROG
,
228 key
, sizeof(struct brw_vs_prog_key
),
229 program
, program_size
,
230 &prog_data
, sizeof(prog_data
),
231 &brw
->vs
.base
.prog_offset
, &brw
->vs
.base
.prog_data
);
232 ralloc_free(mem_ctx
);
238 brw_vs_debug_recompile(struct brw_context
*brw
,
239 struct gl_shader_program
*prog
,
240 const struct brw_vs_prog_key
*key
)
242 struct brw_cache_item
*c
= NULL
;
243 const struct brw_vs_prog_key
*old_key
= NULL
;
246 perf_debug("Recompiling vertex shader for program %d\n", prog
->Name
);
248 for (unsigned int i
= 0; i
< brw
->cache
.size
; i
++) {
249 for (c
= brw
->cache
.items
[i
]; c
; c
= c
->next
) {
250 if (c
->cache_id
== BRW_CACHE_VS_PROG
) {
253 if (old_key
->program_string_id
== key
->program_string_id
)
262 perf_debug(" Didn't find previous compile in the shader cache for "
267 for (unsigned int i
= 0; i
< VERT_ATTRIB_MAX
; i
++) {
268 found
|= key_debug(brw
, "Vertex attrib w/a flags",
269 old_key
->gl_attrib_wa_flags
[i
],
270 key
->gl_attrib_wa_flags
[i
]);
273 found
|= key_debug(brw
, "legacy user clipping",
274 old_key
->nr_userclip_plane_consts
,
275 key
->nr_userclip_plane_consts
);
277 found
|= key_debug(brw
, "copy edgeflag",
278 old_key
->copy_edgeflag
, key
->copy_edgeflag
);
279 found
|= key_debug(brw
, "PointCoord replace",
280 old_key
->point_coord_replace
, key
->point_coord_replace
);
281 found
|= key_debug(brw
, "vertex color clamping",
282 old_key
->clamp_vertex_color
, key
->clamp_vertex_color
);
284 found
|= brw_debug_recompile_sampler_key(brw
, &old_key
->tex
, &key
->tex
);
287 perf_debug(" Something else\n");
292 brw_vs_state_dirty(const struct brw_context
*brw
)
294 return brw_state_dirty(brw
,
301 BRW_NEW_VERTEX_PROGRAM
|
302 BRW_NEW_VS_ATTRIB_WORKAROUNDS
);
306 brw_vs_populate_key(struct brw_context
*brw
,
307 struct brw_vs_prog_key
*key
)
309 struct gl_context
*ctx
= &brw
->ctx
;
310 /* BRW_NEW_VERTEX_PROGRAM */
311 struct brw_program
*vp
= (struct brw_program
*)brw
->vertex_program
;
312 struct gl_program
*prog
= (struct gl_program
*) brw
->vertex_program
;
314 memset(key
, 0, sizeof(*key
));
316 /* Just upload the program verbatim for now. Always send it all
317 * the inputs it asks for, whether they are varying or not.
319 key
->program_string_id
= vp
->id
;
321 if (ctx
->Transform
.ClipPlanesEnabled
!= 0 &&
322 (ctx
->API
== API_OPENGL_COMPAT
|| ctx
->API
== API_OPENGLES
) &&
323 vp
->program
.ClipDistanceArraySize
== 0) {
324 key
->nr_userclip_plane_consts
=
325 _mesa_logbase2(ctx
->Transform
.ClipPlanesEnabled
) + 1;
330 key
->copy_edgeflag
= (ctx
->Polygon
.FrontMode
!= GL_FILL
||
331 ctx
->Polygon
.BackMode
!= GL_FILL
);
334 if (ctx
->Point
.PointSprite
) {
335 key
->point_coord_replace
= ctx
->Point
.CoordReplace
& 0xff;
339 if (prog
->nir
->info
->outputs_written
&
340 (VARYING_BIT_COL0
| VARYING_BIT_COL1
| VARYING_BIT_BFC0
|
342 /* _NEW_LIGHT | _NEW_BUFFERS */
343 key
->clamp_vertex_color
= ctx
->Light
._ClampVertexColor
;
347 brw_populate_sampler_prog_key_data(ctx
, prog
, &key
->tex
);
349 /* BRW_NEW_VS_ATTRIB_WORKAROUNDS */
350 if (brw
->gen
< 8 && !brw
->is_haswell
) {
351 memcpy(key
->gl_attrib_wa_flags
, brw
->vb
.attrib_wa_flags
,
352 sizeof(brw
->vb
.attrib_wa_flags
));
357 brw_upload_vs_prog(struct brw_context
*brw
)
359 struct gl_context
*ctx
= &brw
->ctx
;
360 struct gl_shader_program
**current
= ctx
->_Shader
->CurrentProgram
;
361 struct brw_vs_prog_key key
;
362 /* BRW_NEW_VERTEX_PROGRAM */
363 struct brw_program
*vp
= (struct brw_program
*)brw
->vertex_program
;
365 if (!brw_vs_state_dirty(brw
))
368 brw_vs_populate_key(brw
, &key
);
370 if (!brw_search_cache(&brw
->cache
, BRW_CACHE_VS_PROG
,
372 &brw
->vs
.base
.prog_offset
, &brw
->vs
.base
.prog_data
)) {
373 bool success
= brw_codegen_vs_prog(brw
, current
[MESA_SHADER_VERTEX
],
381 brw_vs_precompile(struct gl_context
*ctx
,
382 struct gl_shader_program
*shader_prog
,
383 struct gl_program
*prog
)
385 struct brw_context
*brw
= brw_context(ctx
);
386 struct brw_vs_prog_key key
;
387 uint32_t old_prog_offset
= brw
->vs
.base
.prog_offset
;
388 struct brw_stage_prog_data
*old_prog_data
= brw
->vs
.base
.prog_data
;
391 struct brw_program
*bvp
= brw_program(prog
);
393 memset(&key
, 0, sizeof(key
));
395 brw_setup_tex_for_precompile(brw
, &key
.tex
, prog
);
396 key
.program_string_id
= bvp
->id
;
397 key
.clamp_vertex_color
=
398 (prog
->nir
->info
->outputs_written
&
399 (VARYING_BIT_COL0
| VARYING_BIT_COL1
| VARYING_BIT_BFC0
|
402 success
= brw_codegen_vs_prog(brw
, shader_prog
, bvp
, &key
);
404 brw
->vs
.base
.prog_offset
= old_prog_offset
;
405 brw
->vs
.base
.prog_data
= old_prog_data
;