1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
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.
26 **************************************************************************/
29 #include "pipe/p_config.h"
32 #include "pipe/p_shader_tokens.h"
33 #include "util/u_math.h"
34 #include "util/u_memory.h"
35 #include "tgsi/tgsi_parse.h"
36 #include "tgsi/tgsi_util.h"
37 #include "tgsi/tgsi_exec.h"
39 #include "draw_vs_aos.h"
40 #include "draw_vertex.h"
44 #include "rtasm/rtasm_x86sse.h"
47 #define X87_CW_EXCEPTION_INV_OP (1<<0)
48 #define X87_CW_EXCEPTION_DENORM_OP (1<<1)
49 #define X87_CW_EXCEPTION_ZERO_DIVIDE (1<<2)
50 #define X87_CW_EXCEPTION_OVERFLOW (1<<3)
51 #define X87_CW_EXCEPTION_UNDERFLOW (1<<4)
52 #define X87_CW_EXCEPTION_PRECISION (1<<5)
53 #define X87_CW_PRECISION_SINGLE (0<<8)
54 #define X87_CW_PRECISION_RESERVED (1<<8)
55 #define X87_CW_PRECISION_DOUBLE (2<<8)
56 #define X87_CW_PRECISION_DOUBLE_EXT (3<<8)
57 #define X87_CW_PRECISION_MASK (3<<8)
58 #define X87_CW_ROUND_NEAREST (0<<10)
59 #define X87_CW_ROUND_DOWN (1<<10)
60 #define X87_CW_ROUND_UP (2<<10)
61 #define X87_CW_ROUND_ZERO (3<<10)
62 #define X87_CW_ROUND_MASK (3<<10)
63 #define X87_CW_INFINITY (1<<12)
66 void PIPE_CDECL aos_do_lit( struct aos_machine *machine,
82 const float epsilon = 1.0F / 256.0F;
83 float exponent = CLAMP(in[3], -(128.0F - epsilon), (128.0F - epsilon));
86 result[2] = powf(in[1], exponent);
100 static void PIPE_CDECL do_lit_lut( struct aos_machine *machine,
116 if (machine->lit_info[count].shine_tab->exponent != in[3]) {
117 machine->lit_info[count].func = aos_do_lit;
123 const float *tab = machine->lit_info[count].shine_tab->values;
124 float f = in[1] * 256;
126 float frac = f - (float)k;
130 result[2] = tab[k] + frac*(tab[k+1]-tab[k]);
137 const float epsilon = 1.0F / 256.0F;
138 float exponent = CLAMP(in[3], -(128.0F - epsilon), (128.0F - epsilon));
141 result[2] = powf(in[1], exponent);
155 static void do_populate_lut( struct shine_tab *tab,
156 float unclamped_exponent )
158 const float epsilon = 1.0F / 256.0F;
159 float exponent = CLAMP(unclamped_exponent, -(128.0F - epsilon), (128.0F - epsilon));
162 tab->exponent = unclamped_exponent; /* for later comparison */
166 for (i = 1; i < 258; i++) {
167 tab->values[i] = 1.0;
171 for (i = 1; i < 258; i++) {
172 tab->values[i] = powf((float)i * epsilon, exponent);
180 static void PIPE_CDECL populate_lut( struct aos_machine *machine,
187 /* Search for an existing table for this value. Note that without
188 * static analysis we don't really know if in[3] will be constant,
189 * but it usually is...
191 for (tab = 0; tab < 4; tab++) {
192 if (machine->shine_tab[tab].exponent == in[3]) {
197 for (tab = 0, i = 1; i < 4; i++) {
198 if (machine->shine_tab[i].last_used < machine->shine_tab[tab].last_used)
202 if (machine->shine_tab[tab].last_used == machine->now) {
203 /* No unused tables (this is not a ffvertex program...). Just
204 * call pow each time:
206 machine->lit_info[count].func = aos_do_lit;
207 machine->lit_info[count].func( machine, result, in, count );
211 do_populate_lut( &machine->shine_tab[tab], in[3] );
215 machine->shine_tab[tab].last_used = machine->now;
216 machine->lit_info[count].shine_tab = &machine->shine_tab[tab];
217 machine->lit_info[count].func = do_lit_lut;
218 machine->lit_info[count].func( machine, result, in, count );
223 draw_vs_aos_machine_constants(struct aos_machine *machine,
225 const void *constants)
227 machine->constants[slot] = constants;
231 for (i = 0; i < MAX_LIT_INFO; i++) {
232 machine->lit_info[i].func = populate_lut;
239 void draw_vs_aos_machine_viewport( struct aos_machine *machine,
240 const struct pipe_viewport_state *viewport )
242 memcpy(machine->scale, viewport->scale, 4 * sizeof(float));
243 memcpy(machine->translate, viewport->translate, 4 * sizeof(float));
248 void draw_vs_aos_machine_destroy( struct aos_machine *machine )
253 struct aos_machine *draw_vs_aos_machine( void )
255 struct aos_machine *machine;
257 float inv = 1.0f/255.0f;
260 machine = align_malloc(sizeof(struct aos_machine), 16);
264 memset(machine, 0, sizeof(*machine));
266 ASSIGN_4V(machine->internal[IMM_SWZ], 1.0f, -1.0f, 0.0f, 1.0f);
267 *(unsigned *)&machine->internal[IMM_SWZ][3] = 0xffffffff;
269 ASSIGN_4V(machine->internal[IMM_ONES], 1.0f, 1.0f, 1.0f, 1.0f);
270 ASSIGN_4V(machine->internal[IMM_NEGS], -1.0f, -1.0f, -1.0f, -1.0f);
271 ASSIGN_4V(machine->internal[IMM_IDENTITY], 0.0f, 0.0f, 0.0f, 1.0f);
272 ASSIGN_4V(machine->internal[IMM_INV_255], inv, inv, inv, inv);
273 ASSIGN_4V(machine->internal[IMM_255], f255, f255, f255, f255);
274 ASSIGN_4V(machine->internal[IMM_RSQ], -.5f, 1.5f, 0.0f, 0.0f);
277 machine->fpu_rnd_nearest = (X87_CW_EXCEPTION_INV_OP |
278 X87_CW_EXCEPTION_DENORM_OP |
279 X87_CW_EXCEPTION_ZERO_DIVIDE |
280 X87_CW_EXCEPTION_OVERFLOW |
281 X87_CW_EXCEPTION_UNDERFLOW |
282 X87_CW_EXCEPTION_PRECISION |
284 X87_CW_ROUND_NEAREST |
285 X87_CW_PRECISION_DOUBLE_EXT);
287 assert(machine->fpu_rnd_nearest == 0x37f);
289 machine->fpu_rnd_neg_inf = (X87_CW_EXCEPTION_INV_OP |
290 X87_CW_EXCEPTION_DENORM_OP |
291 X87_CW_EXCEPTION_ZERO_DIVIDE |
292 X87_CW_EXCEPTION_OVERFLOW |
293 X87_CW_EXCEPTION_UNDERFLOW |
294 X87_CW_EXCEPTION_PRECISION |
297 X87_CW_PRECISION_DOUBLE_EXT);
299 for (i = 0; i < MAX_SHINE_TAB; i++)
300 do_populate_lut( &machine->shine_tab[i], 1.0f );
307 void draw_vs_aos_machine_viewport( struct aos_machine *machine,
308 const struct pipe_viewport_state *viewport )
313 draw_vs_aos_machine_constants(struct aos_machine *machine,
315 const void *constants)
319 void draw_vs_aos_machine_destroy( struct aos_machine *machine )
323 struct aos_machine *draw_vs_aos_machine( void )