r300_state.c revision 69adebf5945d994485c584c183c148fc2c1373ed
1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 * Copyright 2009 Marek Olšák <maraeo@gmail.com>
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * on the rights to use, copy, modify, merge, publish, distribute, sub
9 * license, and/or sell copies of the Software, and to permit persons to whom
10 * the Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
22 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
23
24#include "draw/draw_context.h"
25
26#include "util/u_math.h"
27#include "util/u_memory.h"
28#include "util/u_pack_color.h"
29
30#include "tgsi/tgsi_parse.h"
31
32#include "pipe/p_config.h"
33
34#include "r300_cb.h"
35#include "r300_context.h"
36#include "r300_emit.h"
37#include "r300_reg.h"
38#include "r300_screen.h"
39#include "r300_screen_buffer.h"
40#include "r300_state_inlines.h"
41#include "r300_fs.h"
42#include "r300_texture.h"
43#include "r300_vs.h"
44#include "r300_winsys.h"
45
46/* r300_state: Functions used to intialize state context by translating
47 * Gallium state objects into semi-native r300 state objects. */
48
49#define UPDATE_STATE(cso, atom) \
50    if (cso != atom.state) { \
51        atom.state = cso;    \
52        atom.dirty = TRUE;   \
53    }
54
55static boolean blend_discard_if_src_alpha_0(unsigned srcRGB, unsigned srcA,
56                                            unsigned dstRGB, unsigned dstA)
57{
58    /* If the blend equation is ADD or REVERSE_SUBTRACT,
59     * SRC_ALPHA == 0, and the following state is set, the colorbuffer
60     * will not be changed.
61     * Notice that the dst factors are the src factors inverted. */
62    return (srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
63            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
64            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
65           (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
66            srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
67            srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
68            srcA == PIPE_BLENDFACTOR_ZERO) &&
69           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
70            dstRGB == PIPE_BLENDFACTOR_ONE) &&
71           (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
72            dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
73            dstA == PIPE_BLENDFACTOR_ONE);
74}
75
76static boolean blend_discard_if_src_alpha_1(unsigned srcRGB, unsigned srcA,
77                                            unsigned dstRGB, unsigned dstA)
78{
79    /* If the blend equation is ADD or REVERSE_SUBTRACT,
80     * SRC_ALPHA == 1, and the following state is set, the colorbuffer
81     * will not be changed.
82     * Notice that the dst factors are the src factors inverted. */
83    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
84            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
85           (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
86            srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
87            srcA == PIPE_BLENDFACTOR_ZERO) &&
88           (dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
89            dstRGB == PIPE_BLENDFACTOR_ONE) &&
90           (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
91            dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
92            dstA == PIPE_BLENDFACTOR_ONE);
93}
94
95static boolean blend_discard_if_src_color_0(unsigned srcRGB, unsigned srcA,
96                                            unsigned dstRGB, unsigned dstA)
97{
98    /* If the blend equation is ADD or REVERSE_SUBTRACT,
99     * SRC_COLOR == (0,0,0), and the following state is set, the colorbuffer
100     * will not be changed.
101     * Notice that the dst factors are the src factors inverted. */
102    return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
103            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
104           (srcA == PIPE_BLENDFACTOR_ZERO) &&
105           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
106            dstRGB == PIPE_BLENDFACTOR_ONE) &&
107           (dstA == PIPE_BLENDFACTOR_ONE);
108}
109
110static boolean blend_discard_if_src_color_1(unsigned srcRGB, unsigned srcA,
111                                            unsigned dstRGB, unsigned dstA)
112{
113    /* If the blend equation is ADD or REVERSE_SUBTRACT,
114     * SRC_COLOR == (1,1,1), and the following state is set, the colorbuffer
115     * will not be changed.
116     * Notice that the dst factors are the src factors inverted. */
117    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
118            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
119           (srcA == PIPE_BLENDFACTOR_ZERO) &&
120           (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
121            dstRGB == PIPE_BLENDFACTOR_ONE) &&
122           (dstA == PIPE_BLENDFACTOR_ONE);
123}
124
125static boolean blend_discard_if_src_alpha_color_0(unsigned srcRGB, unsigned srcA,
126                                                  unsigned dstRGB, unsigned dstA)
127{
128    /* If the blend equation is ADD or REVERSE_SUBTRACT,
129     * SRC_ALPHA_COLOR == (0,0,0,0), and the following state is set,
130     * the colorbuffer will not be changed.
131     * Notice that the dst factors are the src factors inverted. */
132    return (srcRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
133            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
134            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
135            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
136           (srcA == PIPE_BLENDFACTOR_SRC_COLOR ||
137            srcA == PIPE_BLENDFACTOR_SRC_ALPHA ||
138            srcA == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE ||
139            srcA == PIPE_BLENDFACTOR_ZERO) &&
140           (dstRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
141            dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
142            dstRGB == PIPE_BLENDFACTOR_ONE) &&
143           (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
144            dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
145            dstA == PIPE_BLENDFACTOR_ONE);
146}
147
148static boolean blend_discard_if_src_alpha_color_1(unsigned srcRGB, unsigned srcA,
149                                                  unsigned dstRGB, unsigned dstA)
150{
151    /* If the blend equation is ADD or REVERSE_SUBTRACT,
152     * SRC_ALPHA_COLOR == (1,1,1,1), and the following state is set,
153     * the colorbuffer will not be changed.
154     * Notice that the dst factors are the src factors inverted. */
155    return (srcRGB == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
156            srcRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
157            srcRGB == PIPE_BLENDFACTOR_ZERO) &&
158           (srcA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
159            srcA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
160            srcA == PIPE_BLENDFACTOR_ZERO) &&
161           (dstRGB == PIPE_BLENDFACTOR_SRC_COLOR ||
162            dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
163            dstRGB == PIPE_BLENDFACTOR_ONE) &&
164           (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
165            dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
166            dstA == PIPE_BLENDFACTOR_ONE);
167}
168
169static unsigned bgra_cmask(unsigned mask)
170{
171    /* Gallium uses RGBA color ordering while R300 expects BGRA. */
172
173    return ((mask & PIPE_MASK_R) << 2) |
174           ((mask & PIPE_MASK_B) >> 2) |
175           (mask & (PIPE_MASK_G | PIPE_MASK_A));
176}
177
178/* Create a new blend state based on the CSO blend state.
179 *
180 * This encompasses alpha blending, logic/raster ops, and blend dithering. */
181static void* r300_create_blend_state(struct pipe_context* pipe,
182                                     const struct pipe_blend_state* state)
183{
184    struct r300_screen* r300screen = r300_screen(pipe->screen);
185    struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
186    uint32_t blend_control = 0;       /* R300_RB3D_CBLEND: 0x4e04 */
187    uint32_t alpha_blend_control = 0; /* R300_RB3D_ABLEND: 0x4e08 */
188    uint32_t color_channel_mask = 0;  /* R300_RB3D_COLOR_CHANNEL_MASK: 0x4e0c */
189    uint32_t rop = 0;                 /* R300_RB3D_ROPCNTL: 0x4e18 */
190    uint32_t dither = 0;              /* R300_RB3D_DITHER_CTL: 0x4e50 */
191    CB_LOCALS;
192
193    if (state->rt[0].blend_enable)
194    {
195        unsigned eqRGB = state->rt[0].rgb_func;
196        unsigned srcRGB = state->rt[0].rgb_src_factor;
197        unsigned dstRGB = state->rt[0].rgb_dst_factor;
198
199        unsigned eqA = state->rt[0].alpha_func;
200        unsigned srcA = state->rt[0].alpha_src_factor;
201        unsigned dstA = state->rt[0].alpha_dst_factor;
202
203        /* despite the name, ALPHA_BLEND_ENABLE has nothing to do with alpha,
204         * this is just the crappy D3D naming */
205        blend_control = R300_ALPHA_BLEND_ENABLE |
206            r300_translate_blend_function(eqRGB) |
207            ( r300_translate_blend_factor(srcRGB) << R300_SRC_BLEND_SHIFT) |
208            ( r300_translate_blend_factor(dstRGB) << R300_DST_BLEND_SHIFT);
209
210        /* Optimization: some operations do not require the destination color.
211         *
212         * When SRC_ALPHA_SATURATE is used, colorbuffer reads must be enabled,
213         * otherwise blending gives incorrect results. It seems to be
214         * a hardware bug. */
215        if (eqRGB == PIPE_BLEND_MIN || eqA == PIPE_BLEND_MIN ||
216            eqRGB == PIPE_BLEND_MAX || eqA == PIPE_BLEND_MAX ||
217            dstRGB != PIPE_BLENDFACTOR_ZERO ||
218            dstA != PIPE_BLENDFACTOR_ZERO ||
219            srcRGB == PIPE_BLENDFACTOR_DST_COLOR ||
220            srcRGB == PIPE_BLENDFACTOR_DST_ALPHA ||
221            srcRGB == PIPE_BLENDFACTOR_INV_DST_COLOR ||
222            srcRGB == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
223            srcA == PIPE_BLENDFACTOR_DST_COLOR ||
224            srcA == PIPE_BLENDFACTOR_DST_ALPHA ||
225            srcA == PIPE_BLENDFACTOR_INV_DST_COLOR ||
226            srcA == PIPE_BLENDFACTOR_INV_DST_ALPHA ||
227            srcRGB == PIPE_BLENDFACTOR_SRC_ALPHA_SATURATE) {
228            /* Enable reading from the colorbuffer. */
229            blend_control |= R300_READ_ENABLE;
230
231            if (r300screen->caps.is_r500) {
232                /* Optimization: Depending on incoming pixels, we can
233                 * conditionally disable the reading in hardware... */
234                if (eqRGB != PIPE_BLEND_MIN && eqA != PIPE_BLEND_MIN &&
235                    eqRGB != PIPE_BLEND_MAX && eqA != PIPE_BLEND_MAX) {
236                    /* Disable reading if SRC_ALPHA == 0. */
237                    if ((dstRGB == PIPE_BLENDFACTOR_SRC_ALPHA ||
238                         dstRGB == PIPE_BLENDFACTOR_ZERO) &&
239                        (dstA == PIPE_BLENDFACTOR_SRC_COLOR ||
240                         dstA == PIPE_BLENDFACTOR_SRC_ALPHA ||
241                         dstA == PIPE_BLENDFACTOR_ZERO)) {
242                         blend_control |= R500_SRC_ALPHA_0_NO_READ;
243                    }
244
245                    /* Disable reading if SRC_ALPHA == 1. */
246                    if ((dstRGB == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
247                         dstRGB == PIPE_BLENDFACTOR_ZERO) &&
248                        (dstA == PIPE_BLENDFACTOR_INV_SRC_COLOR ||
249                         dstA == PIPE_BLENDFACTOR_INV_SRC_ALPHA ||
250                         dstA == PIPE_BLENDFACTOR_ZERO)) {
251                         blend_control |= R500_SRC_ALPHA_1_NO_READ;
252                    }
253                }
254            }
255        }
256
257        /* Optimization: discard pixels which don't change the colorbuffer.
258         *
259         * The code below is non-trivial and some math is involved.
260         *
261         * Discarding pixels must be disabled when FP16 AA is enabled.
262         * This is a hardware bug. Also, this implementation wouldn't work
263         * with FP blending enabled and equation clamping disabled.
264         *
265         * Equations other than ADD are rarely used and therefore won't be
266         * optimized. */
267        if ((eqRGB == PIPE_BLEND_ADD || eqRGB == PIPE_BLEND_REVERSE_SUBTRACT) &&
268            (eqA == PIPE_BLEND_ADD || eqA == PIPE_BLEND_REVERSE_SUBTRACT)) {
269            /* ADD: X+Y
270             * REVERSE_SUBTRACT: Y-X
271             *
272             * The idea is:
273             * If X = src*srcFactor = 0 and Y = dst*dstFactor = 1,
274             * then CB will not be changed.
275             *
276             * Given the srcFactor and dstFactor variables, we can derive
277             * what src and dst should be equal to and discard appropriate
278             * pixels.
279             */
280            if (blend_discard_if_src_alpha_0(srcRGB, srcA, dstRGB, dstA)) {
281                blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_0;
282            } else if (blend_discard_if_src_alpha_1(srcRGB, srcA,
283                                                    dstRGB, dstA)) {
284                blend_control |= R300_DISCARD_SRC_PIXELS_SRC_ALPHA_1;
285            } else if (blend_discard_if_src_color_0(srcRGB, srcA,
286                                                    dstRGB, dstA)) {
287                blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_0;
288            } else if (blend_discard_if_src_color_1(srcRGB, srcA,
289                                                    dstRGB, dstA)) {
290                blend_control |= R300_DISCARD_SRC_PIXELS_SRC_COLOR_1;
291            } else if (blend_discard_if_src_alpha_color_0(srcRGB, srcA,
292                                                          dstRGB, dstA)) {
293                blend_control |=
294                    R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_0;
295            } else if (blend_discard_if_src_alpha_color_1(srcRGB, srcA,
296                                                          dstRGB, dstA)) {
297                blend_control |=
298                    R300_DISCARD_SRC_PIXELS_SRC_ALPHA_COLOR_1;
299            }
300        }
301
302        /* separate alpha */
303        if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) {
304            blend_control |= R300_SEPARATE_ALPHA_ENABLE;
305            alpha_blend_control =
306                r300_translate_blend_function(eqA) |
307                (r300_translate_blend_factor(srcA) << R300_SRC_BLEND_SHIFT) |
308                (r300_translate_blend_factor(dstA) << R300_DST_BLEND_SHIFT);
309        }
310    }
311
312    /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
313    if (state->logicop_enable) {
314        rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
315                (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
316    }
317
318    /* Color channel masks for all MRTs. */
319    color_channel_mask = bgra_cmask(state->rt[0].colormask);
320    if (r300screen->caps.is_r500 && state->independent_blend_enable) {
321        if (state->rt[1].blend_enable) {
322            color_channel_mask |= bgra_cmask(state->rt[1].colormask) << 4;
323        }
324        if (state->rt[2].blend_enable) {
325            color_channel_mask |= bgra_cmask(state->rt[2].colormask) << 8;
326        }
327        if (state->rt[3].blend_enable) {
328            color_channel_mask |= bgra_cmask(state->rt[3].colormask) << 12;
329        }
330    }
331
332    /* Neither fglrx nor classic r300 ever set this, regardless of dithering
333     * state. Since it's an optional implementation detail, we can leave it
334     * out and never dither.
335     *
336     * This could be revisited if we ever get quality or conformance hints.
337     *
338    if (state->dither) {
339        dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
340                        R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
341    }
342    */
343
344    /* Build a command buffer. */
345    BEGIN_CB(blend->cb, 8);
346    OUT_CB_REG(R300_RB3D_ROPCNTL, rop);
347    OUT_CB_REG_SEQ(R300_RB3D_CBLEND, 3);
348    OUT_CB(blend_control);
349    OUT_CB(alpha_blend_control);
350    OUT_CB(color_channel_mask);
351    OUT_CB_REG(R300_RB3D_DITHER_CTL, dither);
352    END_CB;
353
354    /* The same as above, but with no colorbuffer reads and writes. */
355    BEGIN_CB(blend->cb_no_readwrite, 8);
356    OUT_CB_REG(R300_RB3D_ROPCNTL, rop);
357    OUT_CB_REG_SEQ(R300_RB3D_CBLEND, 3);
358    OUT_CB(0);
359    OUT_CB(0);
360    OUT_CB(0);
361    OUT_CB_REG(R300_RB3D_DITHER_CTL, dither);
362    END_CB;
363
364    return (void*)blend;
365}
366
367/* Bind blend state. */
368static void r300_bind_blend_state(struct pipe_context* pipe,
369                                  void* state)
370{
371    struct r300_context* r300 = r300_context(pipe);
372
373    UPDATE_STATE(state, r300->blend_state);
374}
375
376/* Free blend state. */
377static void r300_delete_blend_state(struct pipe_context* pipe,
378                                    void* state)
379{
380    FREE(state);
381}
382
383/* Convert float to 10bit integer */
384static unsigned float_to_fixed10(float f)
385{
386    return CLAMP((unsigned)(f * 1023.9f), 0, 1023);
387}
388
389/* Set blend color.
390 * Setup both R300 and R500 registers, figure out later which one to write. */
391static void r300_set_blend_color(struct pipe_context* pipe,
392                                 const struct pipe_blend_color* color)
393{
394    struct r300_context* r300 = r300_context(pipe);
395    struct r300_blend_color_state* state =
396        (struct r300_blend_color_state*)r300->blend_color_state.state;
397    CB_LOCALS;
398
399    if (r300->screen->caps.is_r500) {
400        /* XXX if FP16 blending is enabled, we should use the FP16 format */
401        BEGIN_CB(state->cb, 3);
402        OUT_CB_REG_SEQ(R500_RB3D_CONSTANT_COLOR_AR, 2);
403        OUT_CB(float_to_fixed10(color->color[0]) |
404               (float_to_fixed10(color->color[3]) << 16));
405        OUT_CB(float_to_fixed10(color->color[2]) |
406               (float_to_fixed10(color->color[1]) << 16));
407        END_CB;
408    } else {
409        union util_color uc;
410        util_pack_color(color->color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
411
412        BEGIN_CB(state->cb, 2);
413        OUT_CB_REG(R300_RB3D_BLEND_COLOR, uc.ui);
414        END_CB;
415    }
416
417    r300->blend_color_state.dirty = TRUE;
418}
419
420static void r300_set_clip_state(struct pipe_context* pipe,
421                                const struct pipe_clip_state* state)
422{
423    struct r300_context* r300 = r300_context(pipe);
424    struct r300_clip_state *clip =
425            (struct r300_clip_state*)r300->clip_state.state;
426    CB_LOCALS;
427
428    clip->clip = *state;
429
430    if (r300->screen->caps.has_tcl) {
431        BEGIN_CB(clip->cb, 29);
432        OUT_CB_REG(R300_VAP_PVS_VECTOR_INDX_REG,
433                (r300->screen->caps.is_r500 ?
434                 R500_PVS_UCP_START : R300_PVS_UCP_START));
435        OUT_CB_ONE_REG(R300_VAP_PVS_UPLOAD_DATA, 6 * 4);
436        OUT_CB_TABLE(state->ucp, 6 * 4);
437        OUT_CB_REG(R300_VAP_CLIP_CNTL, ((1 << state->nr) - 1) |
438                R300_PS_UCP_MODE_CLIP_AS_TRIFAN);
439        END_CB;
440
441        r300->clip_state.dirty = TRUE;
442    } else {
443        draw_flush(r300->draw);
444        draw_set_clip_state(r300->draw, state);
445    }
446}
447
448static void
449r300_set_sample_mask(struct pipe_context *pipe,
450                     unsigned sample_mask)
451{
452}
453
454
455/* Create a new depth, stencil, and alpha state based on the CSO dsa state.
456 *
457 * This contains the depth buffer, stencil buffer, alpha test, and such.
458 * On the Radeon, depth and stencil buffer setup are intertwined, which is
459 * the reason for some of the strange-looking assignments across registers. */
460static void*
461        r300_create_dsa_state(struct pipe_context* pipe,
462                              const struct pipe_depth_stencil_alpha_state* state)
463{
464    struct r300_capabilities *caps = &r300_screen(pipe->screen)->caps;
465    struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
466    CB_LOCALS;
467
468    dsa->dsa = *state;
469
470    /* Depth test setup. */
471    if (state->depth.enabled) {
472        dsa->z_buffer_control |= R300_Z_ENABLE;
473
474        if (state->depth.writemask) {
475            dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
476        }
477
478        dsa->z_stencil_control |=
479            (r300_translate_depth_stencil_function(state->depth.func) <<
480                R300_Z_FUNC_SHIFT);
481    }
482
483    /* Stencil buffer setup. */
484    if (state->stencil[0].enabled) {
485        dsa->z_buffer_control |= R300_STENCIL_ENABLE;
486        dsa->z_stencil_control |=
487            (r300_translate_depth_stencil_function(state->stencil[0].func) <<
488                R300_S_FRONT_FUNC_SHIFT) |
489            (r300_translate_stencil_op(state->stencil[0].fail_op) <<
490                R300_S_FRONT_SFAIL_OP_SHIFT) |
491            (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
492                R300_S_FRONT_ZPASS_OP_SHIFT) |
493            (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
494                R300_S_FRONT_ZFAIL_OP_SHIFT);
495
496        dsa->stencil_ref_mask =
497                (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
498                (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
499
500        if (state->stencil[1].enabled) {
501            dsa->two_sided = TRUE;
502
503            dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
504            dsa->z_stencil_control |=
505            (r300_translate_depth_stencil_function(state->stencil[1].func) <<
506                R300_S_BACK_FUNC_SHIFT) |
507            (r300_translate_stencil_op(state->stencil[1].fail_op) <<
508                R300_S_BACK_SFAIL_OP_SHIFT) |
509            (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
510                R300_S_BACK_ZPASS_OP_SHIFT) |
511            (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
512                R300_S_BACK_ZFAIL_OP_SHIFT);
513
514            dsa->stencil_ref_bf =
515                (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
516                (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
517
518            if (caps->is_r500) {
519                dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
520            } else {
521                dsa->two_sided_stencil_ref =
522                  (state->stencil[0].valuemask != state->stencil[1].valuemask ||
523                   state->stencil[0].writemask != state->stencil[1].writemask);
524            }
525        }
526    }
527
528    /* Alpha test setup. */
529    if (state->alpha.enabled) {
530        dsa->alpha_function =
531            r300_translate_alpha_function(state->alpha.func) |
532            R300_FG_ALPHA_FUNC_ENABLE;
533
534        /* We could use 10bit alpha ref but who needs that? */
535        dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
536
537        if (caps->is_r500)
538            dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
539    }
540
541    BEGIN_CB(&dsa->cb_begin, 8);
542    OUT_CB_REG(R300_FG_ALPHA_FUNC, dsa->alpha_function);
543    OUT_CB_REG_SEQ(R300_ZB_CNTL, 3);
544    OUT_CB(dsa->z_buffer_control);
545    OUT_CB(dsa->z_stencil_control);
546    OUT_CB(dsa->stencil_ref_mask);
547    OUT_CB_REG(R500_ZB_STENCILREFMASK_BF, dsa->stencil_ref_bf);
548    END_CB;
549
550    BEGIN_CB(dsa->cb_no_readwrite, 8);
551    OUT_CB_REG(R300_FG_ALPHA_FUNC, dsa->alpha_function);
552    OUT_CB_REG_SEQ(R300_ZB_CNTL, 3);
553    OUT_CB(0);
554    OUT_CB(0);
555    OUT_CB(0);
556    OUT_CB_REG(R500_ZB_STENCILREFMASK_BF, 0);
557    END_CB;
558
559    return (void*)dsa;
560}
561
562static void r300_dsa_inject_stencilref(struct r300_context *r300)
563{
564    struct r300_dsa_state *dsa =
565            (struct r300_dsa_state*)r300->dsa_state.state;
566
567    if (!dsa)
568        return;
569
570    dsa->stencil_ref_mask =
571        (dsa->stencil_ref_mask & ~R300_STENCILREF_MASK) |
572        r300->stencil_ref.ref_value[0];
573    dsa->stencil_ref_bf =
574        (dsa->stencil_ref_bf & ~R300_STENCILREF_MASK) |
575        r300->stencil_ref.ref_value[1];
576}
577
578/* Bind DSA state. */
579static void r300_bind_dsa_state(struct pipe_context* pipe,
580                                void* state)
581{
582    struct r300_context* r300 = r300_context(pipe);
583
584    if (!state) {
585        return;
586    }
587
588    UPDATE_STATE(state, r300->dsa_state);
589
590    r300_dsa_inject_stencilref(r300);
591}
592
593/* Free DSA state. */
594static void r300_delete_dsa_state(struct pipe_context* pipe,
595                                  void* state)
596{
597    FREE(state);
598}
599
600static void r300_set_stencil_ref(struct pipe_context* pipe,
601                                 const struct pipe_stencil_ref* sr)
602{
603    struct r300_context* r300 = r300_context(pipe);
604
605    r300->stencil_ref = *sr;
606
607    r300_dsa_inject_stencilref(r300);
608    r300->dsa_state.dirty = TRUE;
609}
610
611/* This switcheroo is needed just because of goddamned MACRO_SWITCH. */
612static void r300_fb_set_tiling_flags(struct r300_context *r300,
613                               const struct pipe_framebuffer_state *old_state,
614                               const struct pipe_framebuffer_state *new_state)
615{
616    struct r300_texture *tex;
617    unsigned i, level;
618
619    /* Set tiling flags for new surfaces. */
620    for (i = 0; i < new_state->nr_cbufs; i++) {
621        tex = r300_texture(new_state->cbufs[i]->texture);
622        level = new_state->cbufs[i]->level;
623
624        r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
625                tex->pitch[0] * util_format_get_blocksize(tex->b.b.format),
626                tex->microtile,
627                tex->mip_macrotile[level]);
628    }
629    if (new_state->zsbuf) {
630        tex = r300_texture(new_state->zsbuf->texture);
631        level = new_state->zsbuf->level;
632
633        r300->rws->buffer_set_tiling(r300->rws, tex->buffer,
634                tex->pitch[0] * util_format_get_blocksize(tex->b.b.format),
635                tex->microtile,
636                tex->mip_macrotile[level]);
637    }
638}
639
640static void r300_print_fb_surf_info(struct pipe_surface *surf, unsigned index,
641                                    const char *binding)
642{
643    struct pipe_resource *tex = surf->texture;
644    struct r300_texture *rtex = r300_texture(tex);
645
646    fprintf(stderr,
647            "r300:   %s[%i] Dim: %ix%i, Offset: %i, ZSlice: %i, "
648            "Face: %i, Level: %i, Format: %s\n"
649
650            "r300:     TEX: Macro: %s, Micro: %s, Pitch: %i, "
651            "Dim: %ix%ix%i, LastLevel: %i, Format: %s\n",
652
653            binding, index, surf->width, surf->height, surf->offset,
654            surf->zslice, surf->face, surf->level,
655            util_format_short_name(surf->format),
656
657            rtex->macrotile ? "YES" : " NO", rtex->microtile ? "YES" : " NO",
658            rtex->hwpitch[0], tex->width0, tex->height0, tex->depth0,
659            tex->last_level, util_format_short_name(tex->format));
660}
661
662static void
663    r300_set_framebuffer_state(struct pipe_context* pipe,
664                               const struct pipe_framebuffer_state* state)
665{
666    struct r300_context* r300 = r300_context(pipe);
667    struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state;
668    struct pipe_framebuffer_state *old_state = r300->fb_state.state;
669    unsigned max_width, max_height, i;
670    uint32_t zbuffer_bpp = 0;
671
672    if (r300->screen->caps.is_r500) {
673        max_width = max_height = 4096;
674    } else if (r300->screen->caps.is_r400) {
675        max_width = max_height = 4021;
676    } else {
677        max_width = max_height = 2560;
678    }
679
680    if (state->width > max_width || state->height > max_height) {
681        fprintf(stderr, "r300: Implementation error: Render targets are too "
682        "big in %s, refusing to bind framebuffer state!\n", __FUNCTION__);
683        return;
684    }
685
686    if (r300->draw) {
687        draw_flush(r300->draw);
688    }
689
690    r300->gpu_flush.dirty = TRUE;
691    r300->aa_state.dirty = TRUE;
692    r300->fb_state.dirty = TRUE;
693
694    /* If nr_cbufs is changed from zero to non-zero or vice versa... */
695    if (!!old_state->nr_cbufs != !!state->nr_cbufs) {
696        r300->blend_state.dirty = TRUE;
697    }
698    /* If zsbuf is set from NULL to non-NULL or vice versa.. */
699    if (!!old_state->zsbuf != !!state->zsbuf) {
700        r300->dsa_state.dirty = TRUE;
701    }
702
703    /* The tiling flags are dependent on the surface miplevel, unfortunately. */
704    r300_fb_set_tiling_flags(r300, r300->fb_state.state, state);
705
706    memcpy(r300->fb_state.state, state, sizeof(struct pipe_framebuffer_state));
707
708    r300->fb_state.size =
709            7 +
710            (8 * state->nr_cbufs) +
711            (state->zsbuf ? (r300->screen->caps.has_hiz ? 22 : 18) : 0);
712
713    /* Polygon offset depends on the zbuffer bit depth. */
714    if (state->zsbuf && r300->polygon_offset_enabled) {
715        switch (util_format_get_blocksize(state->zsbuf->texture->format)) {
716            case 2:
717                zbuffer_bpp = 16;
718                break;
719            case 4:
720                zbuffer_bpp = 24;
721                break;
722        }
723
724        if (r300->zbuffer_bpp != zbuffer_bpp) {
725            r300->zbuffer_bpp = zbuffer_bpp;
726            r300->rs_state.dirty = TRUE;
727        }
728    }
729
730    /* Set up AA config. */
731    if (r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0)) {
732        if (state->nr_cbufs && state->cbufs[0]->texture->nr_samples > 1) {
733            aa->aa_config = R300_GB_AA_CONFIG_AA_ENABLE;
734
735            switch (state->cbufs[0]->texture->nr_samples) {
736                case 2:
737                    aa->aa_config |= R300_GB_AA_CONFIG_NUM_AA_SUBSAMPLES_2;
738                    break;
739                case 3:
740                    aa->aa_config |= R300_GB_AA_CONFIG_NUM_AA_SUBSAMPLES_3;
741                    break;
742                case 4:
743                    aa->aa_config |= R300_GB_AA_CONFIG_NUM_AA_SUBSAMPLES_4;
744                    break;
745                case 6:
746                    aa->aa_config |= R300_GB_AA_CONFIG_NUM_AA_SUBSAMPLES_6;
747                    break;
748            }
749        } else {
750            aa->aa_config = 0;
751        }
752    }
753
754    if (DBG_ON(r300, DBG_FB)) {
755        fprintf(stderr, "r300: set_framebuffer_state:\n");
756        for (i = 0; i < state->nr_cbufs; i++) {
757            r300_print_fb_surf_info(state->cbufs[i], i, "CB");
758        }
759        if (state->zsbuf) {
760            r300_print_fb_surf_info(state->zsbuf, 0, "ZB");
761        }
762    }
763}
764
765/* Create fragment shader state. */
766static void* r300_create_fs_state(struct pipe_context* pipe,
767                                  const struct pipe_shader_state* shader)
768{
769    struct r300_fragment_shader* fs = NULL;
770
771    fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
772
773    /* Copy state directly into shader. */
774    fs->state = *shader;
775    fs->state.tokens = tgsi_dup_tokens(shader->tokens);
776
777    return (void*)fs;
778}
779
780void r300_mark_fs_code_dirty(struct r300_context *r300)
781{
782    struct r300_fragment_shader* fs = r300_fs(r300);
783
784    r300->fs.dirty = TRUE;
785    r300->fs_rc_constant_state.dirty = TRUE;
786    r300->fs_constants.dirty = TRUE;
787    r300->fs.size = fs->shader->cb_code_size;
788
789    if (r300->screen->caps.is_r500) {
790        r300->fs_rc_constant_state.size = fs->shader->rc_state_count * 7;
791        r300->fs_constants.size = fs->shader->externals_count * 4 + 3;
792    } else {
793        r300->fs_rc_constant_state.size = fs->shader->rc_state_count * 5;
794        r300->fs_constants.size = fs->shader->externals_count * 4 + 1;
795    }
796}
797
798/* Bind fragment shader state. */
799static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
800{
801    struct r300_context* r300 = r300_context(pipe);
802    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
803
804    if (fs == NULL) {
805        r300->fs.state = NULL;
806        return;
807    }
808
809    r300->fs.state = fs;
810    r300_pick_fragment_shader(r300);
811    r300_mark_fs_code_dirty(r300);
812
813    r300->rs_block_state.dirty = TRUE; /* Will be updated before the emission. */
814}
815
816/* Delete fragment shader state. */
817static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
818{
819    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
820    struct r300_fragment_shader_code *tmp, *ptr = fs->first;
821
822    while (ptr) {
823        tmp = ptr;
824        ptr = ptr->next;
825        rc_constants_destroy(&tmp->code.constants);
826        FREE(tmp->cb_code);
827        FREE(tmp);
828    }
829    FREE((void*)fs->state.tokens);
830    FREE(shader);
831}
832
833static void r300_set_polygon_stipple(struct pipe_context* pipe,
834                                     const struct pipe_poly_stipple* state)
835{
836    /* XXX no idea how to set this up, but not terribly important */
837}
838
839/* Create a new rasterizer state based on the CSO rasterizer state.
840 *
841 * This is a very large chunk of state, and covers most of the graphics
842 * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
843 *
844 * In a not entirely unironic sidenote, this state has nearly nothing to do
845 * with the actual block on the Radeon called the rasterizer (RS). */
846static void* r300_create_rs_state(struct pipe_context* pipe,
847                                  const struct pipe_rasterizer_state* state)
848{
849    struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
850    int i;
851    float psiz;
852
853    /* Copy rasterizer state. */
854    rs->rs = *state;
855    rs->rs_draw = *state;
856
857    /* Override some states for Draw. */
858    rs->rs_draw.sprite_coord_enable = 0; /* We can do this in HW. */
859
860#ifdef PIPE_ARCH_LITTLE_ENDIAN
861    rs->vap_control_status = R300_VC_NO_SWAP;
862#else
863    rs->vap_control_status = R300_VC_32BIT_SWAP;
864#endif
865
866    /* If no TCL engine is present, turn off the HW TCL. */
867    if (!r300_screen(pipe->screen)->caps.has_tcl) {
868        rs->vap_control_status |= R300_VAP_TCL_BYPASS;
869    }
870
871    /* Point size width and height. */
872    rs->point_size =
873        pack_float_16_6x(state->point_size) |
874        (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
875
876    /* Point size clamping. */
877    if (state->point_size_per_vertex) {
878        /* Per-vertex point size.
879         * Clamp to [0, max FB size] */
880        psiz = pipe->screen->get_paramf(pipe->screen,
881                                        PIPE_CAP_MAX_POINT_WIDTH);
882        rs->point_minmax =
883            pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MAX_SHIFT;
884    } else {
885        /* We cannot disable the point-size vertex output,
886         * so clamp it. */
887        psiz = state->point_size;
888        rs->point_minmax =
889            (pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MIN_SHIFT) |
890            (pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MAX_SHIFT);
891    }
892
893    /* Line control. */
894    rs->line_control = pack_float_16_6x(state->line_width) |
895        R300_GA_LINE_CNTL_END_TYPE_COMP;
896
897    /* Enable polygon mode */
898    if (state->fill_front != PIPE_POLYGON_MODE_FILL ||
899        state->fill_back != PIPE_POLYGON_MODE_FILL) {
900        rs->polygon_mode = R300_GA_POLY_MODE_DUAL;
901    }
902
903    /* Front face */
904    if (state->front_ccw)
905        rs->cull_mode = R300_FRONT_FACE_CCW;
906    else
907        rs->cull_mode = R300_FRONT_FACE_CW;
908
909    /* Polygon offset */
910    if (util_get_offset(state, state->fill_front)) {
911       rs->polygon_offset_enable |= R300_FRONT_ENABLE;
912    }
913    if (util_get_offset(state, state->fill_back)) {
914       rs->polygon_offset_enable |= R300_BACK_ENABLE;
915    }
916
917    /* Polygon mode */
918    if (rs->polygon_mode) {
919       rs->polygon_mode |=
920          r300_translate_polygon_mode_front(state->fill_front);
921       rs->polygon_mode |=
922          r300_translate_polygon_mode_back(state->fill_back);
923    }
924
925    if (state->cull_face & PIPE_FACE_FRONT) {
926        rs->cull_mode |= R300_CULL_FRONT;
927    }
928    if (state->cull_face & PIPE_FACE_BACK) {
929        rs->cull_mode |= R300_CULL_BACK;
930    }
931
932    if (rs->polygon_offset_enable) {
933        rs->depth_offset = state->offset_units;
934        rs->depth_scale = state->offset_scale;
935    }
936
937    if (state->line_stipple_enable) {
938        rs->line_stipple_config =
939            R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
940            (fui((float)state->line_stipple_factor) &
941                R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
942        /* XXX this might need to be scaled up */
943        rs->line_stipple_value = state->line_stipple_pattern;
944    }
945
946    if (state->flatshade) {
947        rs->color_control = R300_SHADE_MODEL_FLAT;
948    } else {
949        rs->color_control = R300_SHADE_MODEL_SMOOTH;
950    }
951
952    rs->clip_rule = state->scissor ? 0xAAAA : 0xFFFF;
953
954    /* Point sprites */
955    if (state->sprite_coord_enable) {
956        rs->stuffing_enable = R300_GB_POINT_STUFF_ENABLE;
957	for (i = 0; i < 8; i++) {
958	    if (state->sprite_coord_enable & (1 << i))
959		rs->stuffing_enable |=
960		    R300_GB_TEX_STR << (R300_GB_TEX0_SOURCE_SHIFT + (i*2));
961	}
962
963        rs->point_texcoord_left = 0.0f;
964        rs->point_texcoord_right = 1.0f;
965
966        switch (state->sprite_coord_mode) {
967            case PIPE_SPRITE_COORD_UPPER_LEFT:
968                rs->point_texcoord_top = 0.0f;
969                rs->point_texcoord_bottom = 1.0f;
970                break;
971            case PIPE_SPRITE_COORD_LOWER_LEFT:
972                rs->point_texcoord_top = 1.0f;
973                rs->point_texcoord_bottom = 0.0f;
974                break;
975        }
976    }
977
978    if (state->gl_rasterization_rules) {
979        rs->multisample_position_0 = 0x66666666;
980        rs->multisample_position_1 = 0x6666666;
981    }
982
983    return (void*)rs;
984}
985
986/* Bind rasterizer state. */
987static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
988{
989    struct r300_context* r300 = r300_context(pipe);
990    struct r300_rs_state* rs = (struct r300_rs_state*)state;
991    int last_sprite_coord_enable = r300->sprite_coord_enable;
992    boolean last_two_sided_color = r300->two_sided_color;
993
994    if (r300->draw && rs) {
995        draw_flush(r300->draw);
996        draw_set_rasterizer_state(r300->draw, &rs->rs_draw, state);
997    }
998
999    if (rs) {
1000        r300->polygon_offset_enabled = (rs->rs.offset_point ||
1001                                        rs->rs.offset_line ||
1002                                        rs->rs.offset_tri);
1003        r300->sprite_coord_enable = rs->rs.sprite_coord_enable;
1004        r300->two_sided_color = rs->rs.light_twoside;
1005    } else {
1006        r300->polygon_offset_enabled = FALSE;
1007        r300->sprite_coord_enable = 0;
1008        r300->two_sided_color = FALSE;
1009    }
1010
1011    UPDATE_STATE(state, r300->rs_state);
1012    r300->rs_state.size = 25 + (r300->polygon_offset_enabled ? 5 : 0) +
1013        (r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0) ? 3 : 0);
1014
1015    if (last_sprite_coord_enable != r300->sprite_coord_enable ||
1016        last_two_sided_color != r300->two_sided_color) {
1017        r300->rs_block_state.dirty = TRUE;
1018    }
1019}
1020
1021/* Free rasterizer state. */
1022static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
1023{
1024    FREE(state);
1025}
1026
1027static void*
1028        r300_create_sampler_state(struct pipe_context* pipe,
1029                                  const struct pipe_sampler_state* state)
1030{
1031    struct r300_context* r300 = r300_context(pipe);
1032    struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
1033    boolean is_r500 = r300->screen->caps.is_r500;
1034    int lod_bias;
1035    union util_color uc;
1036
1037    sampler->state = *state;
1038
1039    /* r300 doesn't handle CLAMP and MIRROR_CLAMP correctly when either MAG
1040     * or MIN filter is NEAREST. Since texwrap produces same results
1041     * for CLAMP and CLAMP_TO_EDGE, we use them instead. */
1042    if (sampler->state.min_img_filter == PIPE_TEX_FILTER_NEAREST ||
1043        sampler->state.mag_img_filter == PIPE_TEX_FILTER_NEAREST) {
1044        /* Wrap S. */
1045        if (sampler->state.wrap_s == PIPE_TEX_WRAP_CLAMP)
1046            sampler->state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1047        else if (sampler->state.wrap_s == PIPE_TEX_WRAP_MIRROR_CLAMP)
1048            sampler->state.wrap_s = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1049
1050        /* Wrap T. */
1051        if (sampler->state.wrap_t == PIPE_TEX_WRAP_CLAMP)
1052            sampler->state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1053        else if (sampler->state.wrap_t == PIPE_TEX_WRAP_MIRROR_CLAMP)
1054            sampler->state.wrap_t = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1055
1056        /* Wrap R. */
1057        if (sampler->state.wrap_r == PIPE_TEX_WRAP_CLAMP)
1058            sampler->state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1059        else if (sampler->state.wrap_r == PIPE_TEX_WRAP_MIRROR_CLAMP)
1060            sampler->state.wrap_r = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1061    }
1062
1063    sampler->filter0 |=
1064        (r300_translate_wrap(sampler->state.wrap_s) << R300_TX_WRAP_S_SHIFT) |
1065        (r300_translate_wrap(sampler->state.wrap_t) << R300_TX_WRAP_T_SHIFT) |
1066        (r300_translate_wrap(sampler->state.wrap_r) << R300_TX_WRAP_R_SHIFT);
1067
1068    sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
1069                                                   state->mag_img_filter,
1070                                                   state->min_mip_filter,
1071                                                   state->max_anisotropy > 0);
1072
1073    sampler->filter0 |= r300_anisotropy(state->max_anisotropy);
1074
1075    /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */
1076    /* We must pass these to the merge function to clamp them properly. */
1077    sampler->min_lod = MAX2((unsigned)state->min_lod, 0);
1078    sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0);
1079
1080    lod_bias = CLAMP((int)(state->lod_bias * 32 + 1), -(1 << 9), (1 << 9) - 1);
1081
1082    sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
1083
1084    /* This is very high quality anisotropic filtering for R5xx.
1085     * It's good for benchmarking the performance of texturing but
1086     * in practice we don't want to slow down the driver because it's
1087     * a pretty good performance killer. Feel free to play with it. */
1088    if (DBG_ON(r300, DBG_ANISOHQ) && is_r500) {
1089        sampler->filter1 |= r500_anisotropy(state->max_anisotropy);
1090    }
1091
1092    util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
1093    sampler->border_color = uc.ui;
1094
1095    /* R500-specific fixups and optimizations */
1096    if (r300->screen->caps.is_r500) {
1097        sampler->filter1 |= R500_BORDER_FIX;
1098    }
1099
1100    return (void*)sampler;
1101}
1102
1103static void r300_bind_sampler_states(struct pipe_context* pipe,
1104                                     unsigned count,
1105                                     void** states)
1106{
1107    struct r300_context* r300 = r300_context(pipe);
1108    struct r300_textures_state* state =
1109        (struct r300_textures_state*)r300->textures_state.state;
1110    unsigned tex_units = r300->screen->caps.num_tex_units;
1111
1112    if (count > tex_units) {
1113        return;
1114    }
1115
1116    memcpy(state->sampler_states, states, sizeof(void*) * count);
1117    state->sampler_state_count = count;
1118
1119    r300->textures_state.dirty = TRUE;
1120}
1121
1122static void r300_lacks_vertex_textures(struct pipe_context* pipe,
1123                                       unsigned count,
1124                                       void** states)
1125{
1126}
1127
1128static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
1129{
1130    FREE(state);
1131}
1132
1133static uint32_t r300_assign_texture_cache_region(unsigned index, unsigned num)
1134{
1135    /* This looks like a hack, but I believe it's suppose to work like
1136     * that. To illustrate how this works, let's assume you have 5 textures.
1137     * From docs, 5 and the successive numbers are:
1138     *
1139     * FOURTH_1     = 5
1140     * FOURTH_2     = 6
1141     * FOURTH_3     = 7
1142     * EIGHTH_0     = 8
1143     * EIGHTH_1     = 9
1144     *
1145     * First 3 textures will get 3/4 of size of the cache, divived evenly
1146     * between them. The last 1/4 of the cache must be divided between
1147     * the last 2 textures, each will therefore get 1/8 of the cache.
1148     * Why not just to use "5 + texture_index" ?
1149     *
1150     * This simple trick works for all "num" <= 16.
1151     */
1152    if (num <= 1)
1153        return R300_TX_CACHE(R300_TX_CACHE_WHOLE);
1154    else
1155        return R300_TX_CACHE(num + index);
1156}
1157
1158static void r300_set_fragment_sampler_views(struct pipe_context* pipe,
1159                                            unsigned count,
1160                                            struct pipe_sampler_view** views)
1161{
1162    struct r300_context* r300 = r300_context(pipe);
1163    struct r300_textures_state* state =
1164        (struct r300_textures_state*)r300->textures_state.state;
1165    struct r300_texture *texture;
1166    unsigned i, real_num_views = 0, view_index = 0;
1167    unsigned tex_units = r300->screen->caps.num_tex_units;
1168    boolean dirty_tex = FALSE;
1169
1170    if (count > tex_units) {
1171        return;
1172    }
1173
1174    /* Calculate the real number of views. */
1175    for (i = 0; i < count; i++) {
1176        if (views[i])
1177            real_num_views++;
1178    }
1179
1180    for (i = 0; i < count; i++) {
1181        if (&state->sampler_views[i]->base != views[i]) {
1182            pipe_sampler_view_reference(
1183                    (struct pipe_sampler_view**)&state->sampler_views[i],
1184                    views[i]);
1185
1186            if (!views[i]) {
1187                continue;
1188            }
1189
1190            /* A new sampler view (= texture)... */
1191            dirty_tex = TRUE;
1192
1193            /* Set the texrect factor in the fragment shader.
1194             * Needed for RECT and NPOT fallback. */
1195            texture = r300_texture(views[i]->texture);
1196            if (texture->uses_pitch) {
1197                r300->fs_rc_constant_state.dirty = TRUE;
1198            }
1199
1200            state->sampler_views[i]->texcache_region =
1201                r300_assign_texture_cache_region(view_index, real_num_views);
1202            view_index++;
1203        }
1204    }
1205
1206    for (i = count; i < tex_units; i++) {
1207        if (state->sampler_views[i]) {
1208            pipe_sampler_view_reference(
1209                    (struct pipe_sampler_view**)&state->sampler_views[i],
1210                    NULL);
1211        }
1212    }
1213
1214    state->sampler_view_count = count;
1215
1216    r300->textures_state.dirty = TRUE;
1217
1218    if (dirty_tex) {
1219        r300->texture_cache_inval.dirty = TRUE;
1220    }
1221}
1222
1223static struct pipe_sampler_view *
1224r300_create_sampler_view(struct pipe_context *pipe,
1225                         struct pipe_resource *texture,
1226                         const struct pipe_sampler_view *templ)
1227{
1228    struct r300_sampler_view *view = CALLOC_STRUCT(r300_sampler_view);
1229    struct r300_texture *tex = r300_texture(texture);
1230
1231    if (view) {
1232        view->base = *templ;
1233        view->base.reference.count = 1;
1234        view->base.context = pipe;
1235        view->base.texture = NULL;
1236        pipe_resource_reference(&view->base.texture, texture);
1237
1238        view->swizzle[0] = templ->swizzle_r;
1239        view->swizzle[1] = templ->swizzle_g;
1240        view->swizzle[2] = templ->swizzle_b;
1241        view->swizzle[3] = templ->swizzle_a;
1242
1243        view->format = tex->tx_format;
1244        view->format.format1 |= r300_translate_texformat(templ->format,
1245                                                         view->swizzle);
1246        if (r300_screen(pipe->screen)->caps.is_r500) {
1247            view->format.format2 |= r500_tx_format_msb_bit(templ->format);
1248        }
1249    }
1250
1251    return (struct pipe_sampler_view*)view;
1252}
1253
1254static void
1255r300_sampler_view_destroy(struct pipe_context *pipe,
1256                          struct pipe_sampler_view *view)
1257{
1258   pipe_resource_reference(&view->texture, NULL);
1259   FREE(view);
1260}
1261
1262static void r300_set_scissor_state(struct pipe_context* pipe,
1263                                   const struct pipe_scissor_state* state)
1264{
1265    struct r300_context* r300 = r300_context(pipe);
1266
1267    memcpy(r300->scissor_state.state, state,
1268        sizeof(struct pipe_scissor_state));
1269
1270    r300->scissor_state.dirty = TRUE;
1271}
1272
1273static void r300_set_viewport_state(struct pipe_context* pipe,
1274                                    const struct pipe_viewport_state* state)
1275{
1276    struct r300_context* r300 = r300_context(pipe);
1277    struct r300_viewport_state* viewport =
1278        (struct r300_viewport_state*)r300->viewport_state.state;
1279
1280    r300->viewport = *state;
1281
1282    if (r300->draw) {
1283        draw_flush(r300->draw);
1284        draw_set_viewport_state(r300->draw, state);
1285        viewport->vte_control = R300_VTX_XY_FMT | R300_VTX_Z_FMT;
1286        return;
1287    }
1288
1289    /* Do the transform in HW. */
1290    viewport->vte_control = R300_VTX_W0_FMT;
1291
1292    if (state->scale[0] != 1.0f) {
1293        viewport->xscale = state->scale[0];
1294        viewport->vte_control |= R300_VPORT_X_SCALE_ENA;
1295    }
1296    if (state->scale[1] != 1.0f) {
1297        viewport->yscale = state->scale[1];
1298        viewport->vte_control |= R300_VPORT_Y_SCALE_ENA;
1299    }
1300    if (state->scale[2] != 1.0f) {
1301        viewport->zscale = state->scale[2];
1302        viewport->vte_control |= R300_VPORT_Z_SCALE_ENA;
1303    }
1304    if (state->translate[0] != 0.0f) {
1305        viewport->xoffset = state->translate[0];
1306        viewport->vte_control |= R300_VPORT_X_OFFSET_ENA;
1307    }
1308    if (state->translate[1] != 0.0f) {
1309        viewport->yoffset = state->translate[1];
1310        viewport->vte_control |= R300_VPORT_Y_OFFSET_ENA;
1311    }
1312    if (state->translate[2] != 0.0f) {
1313        viewport->zoffset = state->translate[2];
1314        viewport->vte_control |= R300_VPORT_Z_OFFSET_ENA;
1315    }
1316
1317    r300->viewport_state.dirty = TRUE;
1318    if (r300->fs.state && r300_fs(r300)->shader->inputs.wpos != ATTR_UNUSED) {
1319        r300->fs_rc_constant_state.dirty = TRUE;
1320    }
1321}
1322
1323static void r300_set_vertex_buffers(struct pipe_context* pipe,
1324                                    unsigned count,
1325                                    const struct pipe_vertex_buffer* buffers)
1326{
1327    struct r300_context* r300 = r300_context(pipe);
1328    struct pipe_vertex_buffer *vbo;
1329    unsigned i, max_index = (1 << 24) - 1;
1330    boolean any_user_buffer = FALSE;
1331
1332    if (count == r300->vertex_buffer_count &&
1333        memcmp(r300->vertex_buffer, buffers,
1334            sizeof(struct pipe_vertex_buffer) * count) == 0) {
1335        return;
1336    }
1337
1338    if (r300->screen->caps.has_tcl) {
1339        /* HW TCL. */
1340        r300->incompatible_vb_layout = FALSE;
1341
1342        /* Check if the strides and offsets are aligned to the size of DWORD. */
1343        for (i = 0; i < count; i++) {
1344            if (buffers[i].buffer) {
1345                if (buffers[i].stride % 4 != 0 ||
1346                    buffers[i].buffer_offset % 4 != 0) {
1347                    r300->incompatible_vb_layout = TRUE;
1348                    break;
1349                }
1350            }
1351        }
1352
1353        for (i = 0; i < count; i++) {
1354            /* Why, yes, I AM casting away constness. How did you know? */
1355            vbo = (struct pipe_vertex_buffer*)&buffers[i];
1356
1357            /* Skip NULL buffers */
1358            if (!buffers[i].buffer) {
1359                continue;
1360            }
1361
1362            if (r300_buffer_is_user_buffer(vbo->buffer)) {
1363                any_user_buffer = TRUE;
1364            }
1365
1366            if (vbo->max_index == ~0) {
1367                /* if no VBO stride then only one vertex value so max index is 1 */
1368                /* should think about converting to VS constants like svga does */
1369                if (!vbo->stride)
1370                    vbo->max_index = 1;
1371                else
1372                    vbo->max_index =
1373                             (vbo->buffer->width0 - vbo->buffer_offset) / vbo->stride;
1374            }
1375
1376            max_index = MIN2(vbo->max_index, max_index);
1377        }
1378
1379        r300->any_user_vbs = any_user_buffer;
1380        r300->vertex_buffer_max_index = max_index;
1381
1382    } else {
1383        /* SW TCL. */
1384        draw_flush(r300->draw);
1385        draw_set_vertex_buffers(r300->draw, count, buffers);
1386    }
1387
1388    /* Common code. */
1389    for (i = 0; i < count; i++) {
1390        /* Reference our buffer. */
1391        pipe_resource_reference(&r300->vertex_buffer[i].buffer, buffers[i].buffer);
1392    }
1393    for (; i < r300->vertex_buffer_count; i++) {
1394        /* Dereference any old buffers. */
1395        pipe_resource_reference(&r300->vertex_buffer[i].buffer, NULL);
1396    }
1397
1398    memcpy(r300->vertex_buffer, buffers,
1399        sizeof(struct pipe_vertex_buffer) * count);
1400    r300->vertex_buffer_count = count;
1401}
1402
1403/* Initialize the PSC tables. */
1404static void r300_vertex_psc(struct r300_vertex_element_state *velems)
1405{
1406    struct r300_vertex_stream_state *vstream = &velems->vertex_stream;
1407    uint16_t type, swizzle;
1408    enum pipe_format format;
1409    unsigned i;
1410
1411    if (velems->count > 16) {
1412        fprintf(stderr, "r300: More than 16 vertex elements are not supported,"
1413                " requested %i, using 16.\n", velems->count);
1414        velems->count = 16;
1415    }
1416
1417    /* Vertex shaders have no semantics on their inputs,
1418     * so PSC should just route stuff based on the vertex elements,
1419     * and not on attrib information. */
1420    for (i = 0; i < velems->count; i++) {
1421        format = velems->hw_format[i];
1422
1423        type = r300_translate_vertex_data_type(format);
1424        if (type == R300_INVALID_FORMAT) {
1425            fprintf(stderr, "r300: Bad vertex format %s.\n",
1426                    util_format_short_name(format));
1427            assert(0);
1428            abort();
1429        }
1430
1431        type |= i << R300_DST_VEC_LOC_SHIFT;
1432        swizzle = r300_translate_vertex_data_swizzle(format);
1433
1434        if (i & 1) {
1435            vstream->vap_prog_stream_cntl[i >> 1] |= type << 16;
1436            vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle << 16;
1437        } else {
1438            vstream->vap_prog_stream_cntl[i >> 1] |= type;
1439            vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle;
1440        }
1441    }
1442
1443    /* Set the last vector in the PSC. */
1444    if (i) {
1445        i -= 1;
1446    }
1447    vstream->vap_prog_stream_cntl[i >> 1] |=
1448        (R300_LAST_VEC << (i & 1 ? 16 : 0));
1449
1450    vstream->count = (i >> 1) + 1;
1451}
1452
1453#define FORMAT_REPLACE(what, withwhat) \
1454    case PIPE_FORMAT_##what: *format = PIPE_FORMAT_##withwhat; break
1455
1456static void* r300_create_vertex_elements_state(struct pipe_context* pipe,
1457                                               unsigned count,
1458                                               const struct pipe_vertex_element* attribs)
1459{
1460    struct r300_vertex_element_state *velems;
1461    unsigned i;
1462    enum pipe_format *format;
1463
1464    assert(count <= PIPE_MAX_ATTRIBS);
1465    velems = CALLOC_STRUCT(r300_vertex_element_state);
1466    if (velems != NULL) {
1467        velems->count = count;
1468        memcpy(velems->velem, attribs, sizeof(struct pipe_vertex_element) * count);
1469
1470        if (r300_screen(pipe->screen)->caps.has_tcl) {
1471            /* Set the best hw format in case the original format is not
1472             * supported by hw. */
1473            for (i = 0; i < count; i++) {
1474                velems->hw_format[i] = velems->velem[i].src_format;
1475                format = &velems->hw_format[i];
1476
1477                /* This is basically the list of unsupported formats.
1478                 * For now we don't care about the alignment, that's going to
1479                 * be sorted out after the PSC setup. */
1480                switch (*format) {
1481                    FORMAT_REPLACE(R64_FLOAT,           R32_FLOAT);
1482                    FORMAT_REPLACE(R64G64_FLOAT,        R32G32_FLOAT);
1483                    FORMAT_REPLACE(R64G64B64_FLOAT,     R32G32B32_FLOAT);
1484                    FORMAT_REPLACE(R64G64B64A64_FLOAT,  R32G32B32A32_FLOAT);
1485
1486                    FORMAT_REPLACE(R32_UNORM,           R32_FLOAT);
1487                    FORMAT_REPLACE(R32G32_UNORM,        R32G32_FLOAT);
1488                    FORMAT_REPLACE(R32G32B32_UNORM,     R32G32B32_FLOAT);
1489                    FORMAT_REPLACE(R32G32B32A32_UNORM,  R32G32B32A32_FLOAT);
1490
1491                    FORMAT_REPLACE(R32_USCALED,         R32_FLOAT);
1492                    FORMAT_REPLACE(R32G32_USCALED,      R32G32_FLOAT);
1493                    FORMAT_REPLACE(R32G32B32_USCALED,   R32G32B32_FLOAT);
1494                    FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);
1495
1496                    FORMAT_REPLACE(R32_SNORM,           R32_FLOAT);
1497                    FORMAT_REPLACE(R32G32_SNORM,        R32G32_FLOAT);
1498                    FORMAT_REPLACE(R32G32B32_SNORM,     R32G32B32_FLOAT);
1499                    FORMAT_REPLACE(R32G32B32A32_SNORM,  R32G32B32A32_FLOAT);
1500
1501                    FORMAT_REPLACE(R32_SSCALED,         R32_FLOAT);
1502                    FORMAT_REPLACE(R32G32_SSCALED,      R32G32_FLOAT);
1503                    FORMAT_REPLACE(R32G32B32_SSCALED,   R32G32B32_FLOAT);
1504                    FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);
1505
1506                    FORMAT_REPLACE(R32_FIXED,           R32_FLOAT);
1507                    FORMAT_REPLACE(R32G32_FIXED,        R32G32_FLOAT);
1508                    FORMAT_REPLACE(R32G32B32_FIXED,     R32G32B32_FLOAT);
1509                    FORMAT_REPLACE(R32G32B32A32_FIXED,  R32G32B32A32_FLOAT);
1510
1511                    default:;
1512                }
1513
1514                velems->incompatible_layout =
1515                        velems->incompatible_layout ||
1516                        velems->velem[i].src_format != velems->hw_format[i] ||
1517                        velems->velem[i].src_offset % 4 != 0;
1518            }
1519
1520            /* Now setup PSC.
1521             * The unused components will be replaced by (..., 0, 1). */
1522            r300_vertex_psc(velems);
1523
1524            /* Align the formats to the size of DWORD.
1525             * We only care about the blocksizes of the formats since
1526             * swizzles are already set up.
1527             * Also compute the vertex size. */
1528            for (i = 0; i < count; i++) {
1529                /* This is OK because we check for aligned strides too. */
1530                velems->hw_format_size[i] =
1531                    align(util_format_get_blocksize(velems->hw_format[i]), 4);
1532                velems->vertex_size_dwords += velems->hw_format_size[i] / 4;
1533            }
1534        }
1535    }
1536    return velems;
1537}
1538
1539static void r300_bind_vertex_elements_state(struct pipe_context *pipe,
1540                                            void *state)
1541{
1542    struct r300_context *r300 = r300_context(pipe);
1543    struct r300_vertex_element_state *velems = state;
1544
1545    if (velems == NULL) {
1546        return;
1547    }
1548
1549    r300->velems = velems;
1550
1551    if (r300->draw) {
1552        draw_flush(r300->draw);
1553        draw_set_vertex_elements(r300->draw, velems->count, velems->velem);
1554        return;
1555    }
1556
1557    UPDATE_STATE(&velems->vertex_stream, r300->vertex_stream_state);
1558    r300->vertex_stream_state.size = (1 + velems->vertex_stream.count) * 2;
1559}
1560
1561static void r300_delete_vertex_elements_state(struct pipe_context *pipe, void *state)
1562{
1563   FREE(state);
1564}
1565
1566static void* r300_create_vs_state(struct pipe_context* pipe,
1567                                  const struct pipe_shader_state* shader)
1568{
1569    struct r300_context* r300 = r300_context(pipe);
1570
1571    struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
1572
1573    /* Copy state directly into shader. */
1574    vs->state = *shader;
1575    vs->state.tokens = tgsi_dup_tokens(shader->tokens);
1576
1577    if (r300->screen->caps.has_tcl) {
1578        r300_init_vs_outputs(vs);
1579        r300_translate_vertex_shader(r300, vs);
1580    } else {
1581        r300_draw_init_vertex_shader(r300->draw, vs);
1582    }
1583
1584    return vs;
1585}
1586
1587static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
1588{
1589    struct r300_context* r300 = r300_context(pipe);
1590    struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
1591
1592    if (vs == NULL) {
1593        r300->vs_state.state = NULL;
1594        return;
1595    }
1596    if (vs == r300->vs_state.state) {
1597        return;
1598    }
1599    r300->vs_state.state = vs;
1600
1601    /* The majority of the RS block bits is dependent on the vertex shader. */
1602    r300->rs_block_state.dirty = TRUE; /* Will be updated before the emission. */
1603
1604    if (r300->screen->caps.has_tcl) {
1605        r300->vs_state.dirty = TRUE;
1606        r300->vs_state.size =
1607                vs->code.length + 18 +
1608                (vs->immediates_count ? vs->immediates_count * 4 + 3 : 0);
1609
1610        if (vs->externals_count) {
1611            r300->vs_constants.dirty = TRUE;
1612            r300->vs_constants.size = vs->externals_count * 4 + 3;
1613        } else {
1614            r300->vs_constants.size = 0;
1615        }
1616
1617        r300->pvs_flush.dirty = TRUE;
1618    } else {
1619        draw_flush(r300->draw);
1620        draw_bind_vertex_shader(r300->draw,
1621                (struct draw_vertex_shader*)vs->draw_vs);
1622    }
1623}
1624
1625static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
1626{
1627    struct r300_context* r300 = r300_context(pipe);
1628    struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
1629
1630    if (r300->screen->caps.has_tcl) {
1631        rc_constants_destroy(&vs->code.constants);
1632    } else {
1633        draw_delete_vertex_shader(r300->draw,
1634                (struct draw_vertex_shader*)vs->draw_vs);
1635    }
1636
1637    FREE((void*)vs->state.tokens);
1638    FREE(shader);
1639}
1640
1641static void r300_set_constant_buffer(struct pipe_context *pipe,
1642                                     uint shader, uint index,
1643                                     struct pipe_resource *buf)
1644{
1645    struct r300_context* r300 = r300_context(pipe);
1646    struct r300_constant_buffer *cbuf;
1647    struct pipe_transfer *tr;
1648    float *mapped;
1649    int max_size = 0, max_size_bytes = 0, clamped_size = 0;
1650
1651    switch (shader) {
1652        case PIPE_SHADER_VERTEX:
1653            cbuf = (struct r300_constant_buffer*)r300->vs_constants.state;
1654            max_size = 256;
1655            break;
1656        case PIPE_SHADER_FRAGMENT:
1657            cbuf = (struct r300_constant_buffer*)r300->fs_constants.state;
1658            if (r300->screen->caps.is_r500) {
1659                max_size = 256;
1660            } else {
1661                max_size = 32;
1662            }
1663            break;
1664        default:
1665            assert(0);
1666            return;
1667    }
1668    max_size_bytes = max_size * 4 * sizeof(float);
1669
1670    if (buf == NULL || buf->width0 == 0 ||
1671        (mapped = pipe_buffer_map(pipe, buf, PIPE_TRANSFER_READ, &tr)) == NULL)
1672    {
1673        cbuf->count = 0;
1674        return;
1675    }
1676
1677    if (shader == PIPE_SHADER_FRAGMENT ||
1678        (shader == PIPE_SHADER_VERTEX && r300->screen->caps.has_tcl)) {
1679        assert((buf->width0 % (4 * sizeof(float))) == 0);
1680
1681        /* Check the size of the constant buffer. */
1682        /* XXX Subtract immediates and RC_STATE_* variables. */
1683        if (buf->width0 > max_size_bytes) {
1684            fprintf(stderr, "r300: Max size of the constant buffer is "
1685                          "%i*4 floats.\n", max_size);
1686        }
1687
1688        clamped_size = MIN2(buf->width0, max_size_bytes);
1689        cbuf->count = clamped_size / (4 * sizeof(float));
1690
1691        if (shader == PIPE_SHADER_FRAGMENT && !r300->screen->caps.is_r500) {
1692            unsigned i,j;
1693
1694            /* Convert constants to float24. */
1695            for (i = 0; i < cbuf->count; i++)
1696                for (j = 0; j < 4; j++)
1697                    cbuf->constants[i][j] = pack_float24(mapped[i*4+j]);
1698        } else {
1699            memcpy(cbuf->constants, mapped, clamped_size);
1700        }
1701    }
1702
1703    if (shader == PIPE_SHADER_VERTEX) {
1704        if (r300->screen->caps.has_tcl) {
1705            if (r300->vs_constants.size) {
1706                r300->vs_constants.dirty = TRUE;
1707            }
1708            r300->pvs_flush.dirty = TRUE;
1709        } else if (r300->draw) {
1710            draw_set_mapped_constant_buffer(r300->draw, PIPE_SHADER_VERTEX,
1711                0, mapped, buf->width0);
1712        }
1713    } else if (shader == PIPE_SHADER_FRAGMENT) {
1714        r300->fs_constants.dirty = TRUE;
1715    }
1716
1717    pipe_buffer_unmap(pipe, buf, tr);
1718}
1719
1720void r300_init_state_functions(struct r300_context* r300)
1721{
1722    r300->context.create_blend_state = r300_create_blend_state;
1723    r300->context.bind_blend_state = r300_bind_blend_state;
1724    r300->context.delete_blend_state = r300_delete_blend_state;
1725
1726    r300->context.set_blend_color = r300_set_blend_color;
1727
1728    r300->context.set_clip_state = r300_set_clip_state;
1729    r300->context.set_sample_mask = r300_set_sample_mask;
1730
1731    r300->context.set_constant_buffer = r300_set_constant_buffer;
1732
1733    r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
1734    r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
1735    r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
1736
1737    r300->context.set_stencil_ref = r300_set_stencil_ref;
1738
1739    r300->context.set_framebuffer_state = r300_set_framebuffer_state;
1740
1741    r300->context.create_fs_state = r300_create_fs_state;
1742    r300->context.bind_fs_state = r300_bind_fs_state;
1743    r300->context.delete_fs_state = r300_delete_fs_state;
1744
1745    r300->context.set_polygon_stipple = r300_set_polygon_stipple;
1746
1747    r300->context.create_rasterizer_state = r300_create_rs_state;
1748    r300->context.bind_rasterizer_state = r300_bind_rs_state;
1749    r300->context.delete_rasterizer_state = r300_delete_rs_state;
1750
1751    r300->context.create_sampler_state = r300_create_sampler_state;
1752    r300->context.bind_fragment_sampler_states = r300_bind_sampler_states;
1753    r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures;
1754    r300->context.delete_sampler_state = r300_delete_sampler_state;
1755
1756    r300->context.set_fragment_sampler_views = r300_set_fragment_sampler_views;
1757    r300->context.create_sampler_view = r300_create_sampler_view;
1758    r300->context.sampler_view_destroy = r300_sampler_view_destroy;
1759
1760    r300->context.set_scissor_state = r300_set_scissor_state;
1761
1762    r300->context.set_viewport_state = r300_set_viewport_state;
1763
1764    r300->context.set_vertex_buffers = r300_set_vertex_buffers;
1765
1766    r300->context.create_vertex_elements_state = r300_create_vertex_elements_state;
1767    r300->context.bind_vertex_elements_state = r300_bind_vertex_elements_state;
1768    r300->context.delete_vertex_elements_state = r300_delete_vertex_elements_state;
1769
1770    r300->context.create_vs_state = r300_create_vs_state;
1771    r300->context.bind_vs_state = r300_bind_vs_state;
1772    r300->context.delete_vs_state = r300_delete_vs_state;
1773}
1774