2 * Copyright (C) 2009-2010 Francisco Jerez.
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27 #include "nouveau_driver.h"
28 #include "nouveau_context.h"
29 #include "nouveau_gldefs.h"
30 #include "nv10_3d.xml.h"
31 #include "nouveau_util.h"
32 #include "nv10_driver.h"
33 #include "nv20_driver.h"
35 #define RC_IN_SHIFT_A 24
36 #define RC_IN_SHIFT_B 16
37 #define RC_IN_SHIFT_C 8
38 #define RC_IN_SHIFT_D 0
39 #define RC_IN_SHIFT_E 56
40 #define RC_IN_SHIFT_F 48
41 #define RC_IN_SHIFT_G 40
43 #define RC_IN_SOURCE(source) \
44 ((uint64_t)NV10_3D_RC_IN_RGB_D_INPUT_##source)
45 #define RC_IN_USAGE(usage) \
46 ((uint64_t)NV10_3D_RC_IN_RGB_D_COMPONENT_USAGE_##usage)
47 #define RC_IN_MAPPING(mapping) \
48 ((uint64_t)NV10_3D_RC_IN_RGB_D_MAPPING_##mapping)
50 #define RC_OUT_BIAS NV10_3D_RC_OUT_RGB_BIAS_BIAS_BY_NEGATIVE_ONE_HALF
51 #define RC_OUT_SCALE_1 NV10_3D_RC_OUT_RGB_SCALE_NONE
52 #define RC_OUT_SCALE_2 NV10_3D_RC_OUT_RGB_SCALE_SCALE_BY_TWO
53 #define RC_OUT_SCALE_4 NV10_3D_RC_OUT_RGB_SCALE_SCALE_BY_FOUR
55 /* Make the combiner do: spare0_i = A_i * B_i */
56 #define RC_OUT_AB NV10_3D_RC_OUT_RGB_AB_OUTPUT_SPARE0
57 /* spare0_i = dot3(A, B) */
58 #define RC_OUT_DOT_AB (NV10_3D_RC_OUT_RGB_AB_OUTPUT_SPARE0 | \
59 NV10_3D_RC_OUT_RGB_AB_DOT_PRODUCT)
60 /* spare0_i = A_i * B_i + C_i * D_i */
61 #define RC_OUT_SUM NV10_3D_RC_OUT_RGB_SUM_OUTPUT_SPARE0
63 struct combiner_state {
64 struct gl_context *ctx;
66 GLboolean premodulate;
74 /* Derived HW state */
79 /* Initialize a combiner_state struct from the texture unit
81 #define INIT_COMBINER(chan, ctx, rc, i) do { \
82 struct gl_tex_env_combine_state *c = \
83 ctx->Texture.Unit[i]._CurrentCombine; \
86 (rc)->premodulate = c->_NumArgs##chan == 4; \
87 (rc)->mode = c->Mode##chan; \
88 (rc)->source = c->Source##chan; \
89 (rc)->operand = c->Operand##chan; \
90 (rc)->logscale = c->ScaleShift##chan; \
91 (rc)->in = (rc)->out = 0; \
94 /* Get the RC input source for the specified EXT_texture_env_combine
97 get_input_source(struct combiner_state *rc, int source)
101 return RC_IN_SOURCE(ZERO);
104 return RC_IN_SOURCE(TEXTURE0) + rc->unit;
107 return RC_IN_SOURCE(TEXTURE0);
110 return RC_IN_SOURCE(TEXTURE1);
113 return RC_IN_SOURCE(TEXTURE2);
116 return RC_IN_SOURCE(TEXTURE3);
119 return context_chipset(rc->ctx) >= 0x20 ?
120 RC_IN_SOURCE(CONSTANT_COLOR0) :
121 RC_IN_SOURCE(CONSTANT_COLOR0) + rc->unit;
123 case GL_PRIMARY_COLOR:
124 return RC_IN_SOURCE(PRIMARY_COLOR);
127 return rc->unit ? RC_IN_SOURCE(SPARE0)
128 : RC_IN_SOURCE(PRIMARY_COLOR);
135 /* Get the RC input mapping for the specified texture_env_combine
136 * operand, possibly inverted or biased. */
138 #define HALF_BIAS 0x2
141 get_input_mapping(struct combiner_state *rc, int operand, int flags)
145 if (is_color_operand(operand))
146 map |= RC_IN_USAGE(RGB);
148 map |= RC_IN_USAGE(ALPHA);
150 if (is_negative_operand(operand) == !(flags & INVERT))
151 map |= flags & HALF_BIAS ?
152 RC_IN_MAPPING(HALF_BIAS_NEGATE) :
153 RC_IN_MAPPING(UNSIGNED_INVERT);
155 map |= flags & HALF_BIAS ?
156 RC_IN_MAPPING(HALF_BIAS_NORMAL) :
157 RC_IN_MAPPING(UNSIGNED_IDENTITY);
163 get_input_arg(struct combiner_state *rc, int arg, int flags)
165 int source = rc->source[arg];
166 int operand = rc->operand[arg];
168 /* Fake several unsupported texture formats. */
169 if (is_texture_source(source)) {
170 int i = (source == GL_TEXTURE ?
171 rc->unit : source - GL_TEXTURE0);
172 struct gl_texture_object *t = rc->ctx->Texture.Unit[i]._Current;
173 gl_format format = t->Image[0][t->BaseLevel]->TexFormat;
175 if (format == MESA_FORMAT_A8) {
176 /* Emulated using I8. */
177 if (is_color_operand(operand))
178 return RC_IN_SOURCE(ZERO) |
179 get_input_mapping(rc, operand, flags);
181 } else if (format == MESA_FORMAT_L8) {
182 /* Sometimes emulated using I8. */
183 if (!is_color_operand(operand))
184 return RC_IN_SOURCE(ZERO) |
185 get_input_mapping(rc, operand,
188 } else if (format == MESA_FORMAT_XRGB8888) {
189 /* Sometimes emulated using ARGB8888. */
190 if (!is_color_operand(operand))
191 return RC_IN_SOURCE(ZERO) |
192 get_input_mapping(rc, operand,
197 return get_input_source(rc, source) |
198 get_input_mapping(rc, operand, flags);
201 /* Bind the RC input variable <var> to the EXT_texture_env_combine
202 * argument <arg>, possibly inverted or biased. */
203 #define INPUT_ARG(rc, var, arg, flags) \
204 (rc)->in |= get_input_arg(rc, arg, flags) << RC_IN_SHIFT_##var
206 /* Bind the RC input variable <var> to the RC source <src>. */
207 #define INPUT_SRC(rc, var, src, chan) \
208 (rc)->in |= (RC_IN_SOURCE(src) | \
209 RC_IN_USAGE(chan)) << RC_IN_SHIFT_##var
211 /* Bind the RC input variable <var> to a constant +/-1 */
212 #define INPUT_ONE(rc, var, flags) \
213 (rc)->in |= (RC_IN_SOURCE(ZERO) | \
214 (flags & INVERT ? RC_IN_MAPPING(EXPAND_NORMAL) : \
215 RC_IN_MAPPING(UNSIGNED_INVERT))) << RC_IN_SHIFT_##var
218 setup_combiner(struct combiner_state *rc)
222 INPUT_ARG(rc, A, 0, 0);
229 INPUT_ARG(rc, A, 0, 0);
230 INPUT_ARG(rc, B, 1, 0);
237 if (rc->premodulate) {
238 INPUT_ARG(rc, A, 0, 0);
239 INPUT_ARG(rc, B, 1, 0);
240 INPUT_ARG(rc, C, 2, 0);
241 INPUT_ARG(rc, D, 3, 0);
243 INPUT_ARG(rc, A, 0, 0);
245 INPUT_ARG(rc, C, 1, 0);
249 rc->out = RC_OUT_SUM |
250 (rc->mode == GL_ADD_SIGNED ? RC_OUT_BIAS : 0);
254 INPUT_ARG(rc, A, 0, 0);
255 INPUT_ARG(rc, B, 2, 0);
256 INPUT_ARG(rc, C, 1, 0);
257 INPUT_ARG(rc, D, 2, INVERT);
259 rc->out = RC_OUT_SUM;
263 INPUT_ARG(rc, A, 0, 0);
265 INPUT_ARG(rc, C, 1, 0);
266 INPUT_ONE(rc, D, INVERT);
268 rc->out = RC_OUT_SUM;
273 INPUT_ARG(rc, A, 0, HALF_BIAS);
274 INPUT_ARG(rc, B, 1, HALF_BIAS);
276 rc->out = RC_OUT_DOT_AB | RC_OUT_SCALE_4;
278 assert(!rc->logscale);
285 switch (rc->logscale) {
287 rc->out |= RC_OUT_SCALE_1;
290 rc->out |= RC_OUT_SCALE_2;
293 rc->out |= RC_OUT_SCALE_4;
301 nv10_get_general_combiner(struct gl_context *ctx, int i,
302 uint32_t *a_in, uint32_t *a_out,
303 uint32_t *c_in, uint32_t *c_out, uint32_t *k)
305 struct combiner_state rc_a, rc_c;
307 if (ctx->Texture.Unit[i]._ReallyEnabled) {
308 INIT_COMBINER(RGB, ctx, &rc_c, i);
310 if (rc_c.mode == GL_DOT3_RGBA)
313 INIT_COMBINER(A, ctx, &rc_a, i);
315 setup_combiner(&rc_c);
316 setup_combiner(&rc_a);
319 rc_a.in = rc_a.out = rc_c.in = rc_c.out = 0;
322 *k = pack_rgba_f(MESA_FORMAT_ARGB8888,
323 ctx->Texture.Unit[i].EnvColor);
331 nv10_get_final_combiner(struct gl_context *ctx, uint64_t *in, int *n)
333 struct combiner_state rc = {};
336 * The final fragment value equation is something like:
337 * x_i = A_i * B_i + (1 - A_i) * C_i + D_i
339 * where D_i = E_i * F_i, i one of {red, green, blue}.
341 if (ctx->Fog.ColorSumEnabled || ctx->Light.Enabled) {
342 INPUT_SRC(&rc, D, E_TIMES_F, RGB);
343 INPUT_SRC(&rc, F, SECONDARY_COLOR, RGB);
346 if (ctx->Fog.Enabled) {
347 INPUT_SRC(&rc, A, FOG, ALPHA);
348 INPUT_SRC(&rc, C, FOG, RGB);
349 INPUT_SRC(&rc, E, FOG, ALPHA);
351 INPUT_ONE(&rc, A, 0);
352 INPUT_ONE(&rc, C, 0);
353 INPUT_ONE(&rc, E, 0);
356 if (ctx->Texture._EnabledUnits) {
357 INPUT_SRC(&rc, B, SPARE0, RGB);
358 INPUT_SRC(&rc, G, SPARE0, ALPHA);
360 INPUT_SRC(&rc, B, PRIMARY_COLOR, RGB);
361 INPUT_SRC(&rc, G, PRIMARY_COLOR, ALPHA);
365 *n = log2i(ctx->Texture._EnabledUnits) + 1;
369 nv10_emit_tex_env(struct gl_context *ctx, int emit)
371 const int i = emit - NOUVEAU_STATE_TEX_ENV0;
372 struct nouveau_channel *chan = context_chan(ctx);
373 struct nouveau_grobj *celsius = context_eng3d(ctx);
374 uint32_t a_in, a_out, c_in, c_out, k;
376 nv10_get_general_combiner(ctx, i, &a_in, &a_out, &c_in, &c_out, &k);
378 /* Enable the combiners we're going to need. */
386 BEGIN_RING(chan, celsius, NV10_3D_RC_IN_ALPHA(i), 1);
387 OUT_RING(chan, a_in);
388 BEGIN_RING(chan, celsius, NV10_3D_RC_IN_RGB(i), 1);
389 OUT_RING(chan, c_in);
390 BEGIN_RING(chan, celsius, NV10_3D_RC_COLOR(i), 1);
392 BEGIN_RING(chan, celsius, NV10_3D_RC_OUT_ALPHA(i), 1);
393 OUT_RING(chan, a_out);
394 BEGIN_RING(chan, celsius, NV10_3D_RC_OUT_RGB(i), 1);
395 OUT_RING(chan, c_out);
397 context_dirty(ctx, FRAG);
401 nv10_emit_frag(struct gl_context *ctx, int emit)
403 struct nouveau_channel *chan = context_chan(ctx);
404 struct nouveau_grobj *celsius = context_eng3d(ctx);
408 nv10_get_final_combiner(ctx, &in, &n);
410 BEGIN_RING(chan, celsius, NV10_3D_RC_FINAL0, 2);
412 OUT_RING(chan, in >> 32);