1 /**************************************************************************
2 *
3 * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
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:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
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 TUNGSTEN GRAPHICS 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.
25 *
26 **************************************************************************/
27
28 /*
29 * Authors:
30 * Keith Whitwell <keith@tungstengraphics.com>
31 * Brian Paul
32 */
33
34 #include "util/u_math.h"
35 #include "util/u_memory.h"
36 #include "pipe/p_config.h"
37
38 #include "draw_vs.h"
39
40 #if defined(PIPE_ARCH_PPC)
41
42 #include "pipe/p_shader_tokens.h"
43
44 #include "draw_private.h"
45 #include "draw_context.h"
46
47 #include "rtasm/rtasm_cpu.h"
48 #include "rtasm/rtasm_ppc.h"
49 #include "tgsi/tgsi_ppc.h"
50 #include "tgsi/tgsi_parse.h"
51 #include "tgsi/tgsi_exec.h"
52
53
54
55 typedef void (PIPE_CDECL *codegen_function) (float (*inputs)[4][4],
56 float (*outputs)[4][4],
57 float (*temps)[4][4],
58 float (*immeds)[4],
59 float (*consts)[4],
60 const float *builtins);
61
62
63 struct draw_ppc_vertex_shader {
64 struct draw_vertex_shader base;
65 struct ppc_function ppc_program;
66
67 codegen_function func;
68 };
69
70
71 static void
vs_ppc_prepare(struct draw_vertex_shader * base,struct draw_context * draw)72 vs_ppc_prepare( struct draw_vertex_shader *base,
73 struct draw_context *draw )
74 {
75 /* nothing */
76 }
77
78
79 /**
80 * Simplified vertex shader interface for the pt paths. Given the
81 * complexity of code-generating all the above operations together,
82 * it's time to try doing all the other stuff separately.
83 */
84 static void
vs_ppc_run_linear(struct draw_vertex_shader * base,const float (* input)[4],float (* output)[4],const void * constants[PIPE_MAX_CONSTANT_BUFFERS],unsigned count,unsigned input_stride,unsigned output_stride)85 vs_ppc_run_linear( struct draw_vertex_shader *base,
86 const float (*input)[4],
87 float (*output)[4],
88 const void *constants[PIPE_MAX_CONSTANT_BUFFERS],
89 unsigned count,
90 unsigned input_stride,
91 unsigned output_stride )
92 {
93 struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
94 unsigned int i;
95
96 #define MAX_VERTICES 4
97
98 /* loop over verts */
99 for (i = 0; i < count; i += MAX_VERTICES) {
100 const uint max_vertices = MIN2(MAX_VERTICES, count - i);
101 PIPE_ALIGN_VAR(16) float inputs_soa[PIPE_MAX_SHADER_INPUTS][4][4];
102 PIPE_ALIGN_VAR(16) float outputs_soa[PIPE_MAX_SHADER_OUTPUTS][4][4];
103 PIPE_ALIGN_VAR(16) float temps_soa[TGSI_EXEC_NUM_TEMPS][4][4];
104 uint attr;
105
106 /* convert (up to) four input verts to SoA format */
107 for (attr = 0; attr < base->info.num_inputs; attr++) {
108 const float *vIn = (const float *) input;
109 uint vert;
110 for (vert = 0; vert < max_vertices; vert++) {
111 #if 0
112 if (attr==0)
113 printf("Input v%d a%d: %f %f %f %f\n",
114 vert, attr, vIn[0], vIn[1], vIn[2], vIn[3]);
115 #endif
116 inputs_soa[attr][0][vert] = vIn[attr * 4 + 0];
117 inputs_soa[attr][1][vert] = vIn[attr * 4 + 1];
118 inputs_soa[attr][2][vert] = vIn[attr * 4 + 2];
119 inputs_soa[attr][3][vert] = vIn[attr * 4 + 3];
120 vIn += input_stride / 4;
121 }
122 }
123
124 /* run compiled shader
125 */
126 shader->func(inputs_soa, outputs_soa, temps_soa,
127 (float (*)[4]) shader->base.immediates,
128 (float (*)[4])constants[0],
129 ppc_builtin_constants);
130
131 /* convert (up to) four output verts from SoA back to AoS format */
132 for (attr = 0; attr < base->info.num_outputs; attr++) {
133 float *vOut = (float *) output;
134 uint vert;
135 for (vert = 0; vert < max_vertices; vert++) {
136 vOut[attr * 4 + 0] = outputs_soa[attr][0][vert];
137 vOut[attr * 4 + 1] = outputs_soa[attr][1][vert];
138 vOut[attr * 4 + 2] = outputs_soa[attr][2][vert];
139 vOut[attr * 4 + 3] = outputs_soa[attr][3][vert];
140 #if 0
141 if (attr==0)
142 printf("Output v%d a%d: %f %f %f %f\n",
143 vert, attr, vOut[0], vOut[1], vOut[2], vOut[3]);
144 #endif
145 vOut += output_stride / 4;
146 }
147 }
148
149 /* advance to next group of four input/output verts */
150 input = (const float (*)[4])((const char *)input + input_stride * max_vertices);
151 output = (float (*)[4])((char *)output + output_stride * max_vertices);
152 }
153 }
154
155
156 static void
vs_ppc_delete(struct draw_vertex_shader * base)157 vs_ppc_delete( struct draw_vertex_shader *base )
158 {
159 struct draw_ppc_vertex_shader *shader = (struct draw_ppc_vertex_shader *)base;
160
161 ppc_release_func( &shader->ppc_program );
162
163 align_free( (void *) shader->base.immediates );
164
165 FREE( (void*) shader->base.state.tokens );
166 FREE( shader );
167 }
168
169
170 struct draw_vertex_shader *
draw_create_vs_ppc(struct draw_context * draw,const struct pipe_shader_state * templ)171 draw_create_vs_ppc(struct draw_context *draw,
172 const struct pipe_shader_state *templ)
173 {
174 struct draw_ppc_vertex_shader *vs;
175
176 vs = CALLOC_STRUCT( draw_ppc_vertex_shader );
177 if (vs == NULL)
178 return NULL;
179
180 /* we make a private copy of the tokens */
181 vs->base.state.tokens = tgsi_dup_tokens(templ->tokens);
182 if (!vs->base.state.tokens)
183 goto fail;
184
185 tgsi_scan_shader(templ->tokens, &vs->base.info);
186
187 vs->base.draw = draw;
188 vs->base.create_variant = draw_vs_create_variant_generic;
189 vs->base.prepare = vs_ppc_prepare;
190 vs->base.run_linear = vs_ppc_run_linear;
191 vs->base.delete = vs_ppc_delete;
192
193 vs->base.immediates = align_malloc(TGSI_EXEC_NUM_IMMEDIATES * 4 *
194 sizeof(float), 16);
195
196 ppc_init_func( &vs->ppc_program );
197
198 #if 0
199 ppc_print_code(&vs->ppc_program, TRUE);
200 ppc_indent(&vs->ppc_program, 8);
201 #endif
202
203 if (!tgsi_emit_ppc( (struct tgsi_token *) vs->base.state.tokens,
204 &vs->ppc_program,
205 (float (*)[4]) vs->base.immediates,
206 TRUE ))
207 goto fail;
208
209 vs->func = (codegen_function) ppc_get_func( &vs->ppc_program );
210 if (!vs->func) {
211 goto fail;
212 }
213
214 return &vs->base;
215
216 fail:
217 /*
218 debug_error("tgsi_emit_ppc() failed, falling back to interpreter\n");
219 */
220
221 ppc_release_func( &vs->ppc_program );
222
223 FREE(vs);
224 return NULL;
225 }
226
227
228
229 #else /* PIPE_ARCH_PPC */
230
231
232 struct draw_vertex_shader *
draw_create_vs_ppc(struct draw_context * draw,const struct pipe_shader_state * templ)233 draw_create_vs_ppc( struct draw_context *draw,
234 const struct pipe_shader_state *templ )
235 {
236 return (void *) 0;
237 }
238
239
240 #endif /* PIPE_ARCH_PPC */
241