r300_state.c revision 93bce03b275f66b6b2db410bbef38954de6a617c
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 pipe_framebuffer_state *old_state = r300->fb_state.state;
668    unsigned max_width, max_height, i;
669    uint32_t zbuffer_bpp = 0;
670
671    if (r300->screen->caps.is_r500) {
672        max_width = max_height = 4096;
673    } else if (r300->screen->caps.is_r400) {
674        max_width = max_height = 4021;
675    } else {
676        max_width = max_height = 2560;
677    }
678
679    if (state->width > max_width || state->height > max_height) {
680        fprintf(stderr, "r300: Implementation error: Render targets are too "
681        "big in %s, refusing to bind framebuffer state!\n", __FUNCTION__);
682        return;
683    }
684
685    if (r300->draw) {
686        draw_flush(r300->draw);
687    }
688
689    r300->gpu_flush.dirty = TRUE;
690    r300->fb_state.dirty = TRUE;
691
692    /* If nr_cbufs is changed from zero to non-zero or vice versa... */
693    if (!!old_state->nr_cbufs != !!state->nr_cbufs) {
694        r300->blend_state.dirty = TRUE;
695    }
696    /* If zsbuf is set from NULL to non-NULL or vice versa.. */
697    if (!!old_state->zsbuf != !!state->zsbuf) {
698        r300->dsa_state.dirty = TRUE;
699    }
700
701    /* The tiling flags are dependent on the surface miplevel, unfortunately. */
702    r300_fb_set_tiling_flags(r300, r300->fb_state.state, state);
703
704    memcpy(r300->fb_state.state, state, sizeof(struct pipe_framebuffer_state));
705
706    r300->fb_state.size =
707            7 +
708            (8 * state->nr_cbufs) +
709            (state->zsbuf ? (r300->screen->caps.has_hiz ? 22 : 18) : 0);
710
711    /* Polygon offset depends on the zbuffer bit depth. */
712    if (state->zsbuf && r300->polygon_offset_enabled) {
713        switch (util_format_get_blocksize(state->zsbuf->texture->format)) {
714            case 2:
715                zbuffer_bpp = 16;
716                break;
717            case 4:
718                zbuffer_bpp = 24;
719                break;
720        }
721
722        if (r300->zbuffer_bpp != zbuffer_bpp) {
723            r300->zbuffer_bpp = zbuffer_bpp;
724            r300->rs_state.dirty = TRUE;
725        }
726    }
727
728    if (DBG_ON(r300, DBG_FB)) {
729        fprintf(stderr, "r300: set_framebuffer_state:\n");
730        for (i = 0; i < state->nr_cbufs; i++) {
731            r300_print_fb_surf_info(state->cbufs[i], i, "CB");
732        }
733        if (state->zsbuf) {
734            r300_print_fb_surf_info(state->zsbuf, 0, "ZB");
735        }
736    }
737}
738
739/* Create fragment shader state. */
740static void* r300_create_fs_state(struct pipe_context* pipe,
741                                  const struct pipe_shader_state* shader)
742{
743    struct r300_fragment_shader* fs = NULL;
744
745    fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
746
747    /* Copy state directly into shader. */
748    fs->state = *shader;
749    fs->state.tokens = tgsi_dup_tokens(shader->tokens);
750
751    return (void*)fs;
752}
753
754void r300_mark_fs_code_dirty(struct r300_context *r300)
755{
756    struct r300_fragment_shader* fs = r300_fs(r300);
757
758    r300->fs.dirty = TRUE;
759    r300->fs_rc_constant_state.dirty = TRUE;
760    r300->fs_constants.dirty = TRUE;
761    r300->fs.size = fs->shader->cb_code_size;
762
763    if (r300->screen->caps.is_r500) {
764        r300->fs_rc_constant_state.size = fs->shader->rc_state_count * 7;
765        r300->fs_constants.size = fs->shader->externals_count * 4 + 3;
766    } else {
767        r300->fs_rc_constant_state.size = fs->shader->rc_state_count * 5;
768        r300->fs_constants.size = fs->shader->externals_count * 4 + 1;
769    }
770}
771
772/* Bind fragment shader state. */
773static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
774{
775    struct r300_context* r300 = r300_context(pipe);
776    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
777
778    if (fs == NULL) {
779        r300->fs.state = NULL;
780        return;
781    }
782
783    r300->fs.state = fs;
784    r300_pick_fragment_shader(r300);
785    r300_mark_fs_code_dirty(r300);
786
787    r300->rs_block_state.dirty = TRUE; /* Will be updated before the emission. */
788}
789
790/* Delete fragment shader state. */
791static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
792{
793    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
794    struct r300_fragment_shader_code *tmp, *ptr = fs->first;
795
796    while (ptr) {
797        tmp = ptr;
798        ptr = ptr->next;
799        rc_constants_destroy(&tmp->code.constants);
800        FREE(tmp->cb_code);
801        FREE(tmp);
802    }
803    FREE((void*)fs->state.tokens);
804    FREE(shader);
805}
806
807static void r300_set_polygon_stipple(struct pipe_context* pipe,
808                                     const struct pipe_poly_stipple* state)
809{
810    /* XXX no idea how to set this up, but not terribly important */
811}
812
813/* Create a new rasterizer state based on the CSO rasterizer state.
814 *
815 * This is a very large chunk of state, and covers most of the graphics
816 * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
817 *
818 * In a not entirely unironic sidenote, this state has nearly nothing to do
819 * with the actual block on the Radeon called the rasterizer (RS). */
820static void* r300_create_rs_state(struct pipe_context* pipe,
821                                  const struct pipe_rasterizer_state* state)
822{
823    struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
824    int i;
825    float psiz;
826
827    /* Copy rasterizer state. */
828    rs->rs = *state;
829    rs->rs_draw = *state;
830
831    /* Override some states for Draw. */
832    rs->rs_draw.sprite_coord_enable = 0; /* We can do this in HW. */
833
834#ifdef PIPE_ARCH_LITTLE_ENDIAN
835    rs->vap_control_status = R300_VC_NO_SWAP;
836#else
837    rs->vap_control_status = R300_VC_32BIT_SWAP;
838#endif
839
840    /* If no TCL engine is present, turn off the HW TCL. */
841    if (!r300_screen(pipe->screen)->caps.has_tcl) {
842        rs->vap_control_status |= R300_VAP_TCL_BYPASS;
843    }
844
845    /* Point size width and height. */
846    rs->point_size =
847        pack_float_16_6x(state->point_size) |
848        (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
849
850    /* Point size clamping. */
851    if (state->point_size_per_vertex) {
852        /* Per-vertex point size.
853         * Clamp to [0, max FB size] */
854        psiz = pipe->screen->get_paramf(pipe->screen,
855                                        PIPE_CAP_MAX_POINT_WIDTH);
856        rs->point_minmax =
857            pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MAX_SHIFT;
858    } else {
859        /* We cannot disable the point-size vertex output,
860         * so clamp it. */
861        psiz = state->point_size;
862        rs->point_minmax =
863            (pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MIN_SHIFT) |
864            (pack_float_16_6x(psiz) << R300_GA_POINT_MINMAX_MAX_SHIFT);
865    }
866
867    /* Line control. */
868    rs->line_control = pack_float_16_6x(state->line_width) |
869        R300_GA_LINE_CNTL_END_TYPE_COMP;
870
871    /* Enable polygon mode */
872    if (state->fill_front != PIPE_POLYGON_MODE_FILL ||
873        state->fill_back != PIPE_POLYGON_MODE_FILL) {
874        rs->polygon_mode = R300_GA_POLY_MODE_DUAL;
875    }
876
877    /* Front face */
878    if (state->front_ccw)
879        rs->cull_mode = R300_FRONT_FACE_CCW;
880    else
881        rs->cull_mode = R300_FRONT_FACE_CW;
882
883    /* Polygon offset */
884    if (util_get_offset(state, state->fill_front)) {
885       rs->polygon_offset_enable |= R300_FRONT_ENABLE;
886    }
887    if (util_get_offset(state, state->fill_back)) {
888       rs->polygon_offset_enable |= R300_BACK_ENABLE;
889    }
890
891    /* Polygon mode */
892    if (rs->polygon_mode) {
893       rs->polygon_mode |=
894          r300_translate_polygon_mode_front(state->fill_front);
895       rs->polygon_mode |=
896          r300_translate_polygon_mode_back(state->fill_back);
897    }
898
899    if (state->cull_face & PIPE_FACE_FRONT) {
900        rs->cull_mode |= R300_CULL_FRONT;
901    }
902    if (state->cull_face & PIPE_FACE_BACK) {
903        rs->cull_mode |= R300_CULL_BACK;
904    }
905
906    if (rs->polygon_offset_enable) {
907        rs->depth_offset = state->offset_units;
908        rs->depth_scale = state->offset_scale;
909    }
910
911    if (state->line_stipple_enable) {
912        rs->line_stipple_config =
913            R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
914            (fui((float)state->line_stipple_factor) &
915                R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
916        /* XXX this might need to be scaled up */
917        rs->line_stipple_value = state->line_stipple_pattern;
918    }
919
920    if (state->flatshade) {
921        rs->color_control = R300_SHADE_MODEL_FLAT;
922    } else {
923        rs->color_control = R300_SHADE_MODEL_SMOOTH;
924    }
925
926    rs->clip_rule = state->scissor ? 0xAAAA : 0xFFFF;
927
928    /* Point sprites */
929    if (state->sprite_coord_enable) {
930        rs->stuffing_enable = R300_GB_POINT_STUFF_ENABLE;
931	for (i = 0; i < 8; i++) {
932	    if (state->sprite_coord_enable & (1 << i))
933		rs->stuffing_enable |=
934		    R300_GB_TEX_STR << (R300_GB_TEX0_SOURCE_SHIFT + (i*2));
935	}
936
937        rs->point_texcoord_left = 0.0f;
938        rs->point_texcoord_right = 1.0f;
939
940        switch (state->sprite_coord_mode) {
941            case PIPE_SPRITE_COORD_UPPER_LEFT:
942                rs->point_texcoord_top = 0.0f;
943                rs->point_texcoord_bottom = 1.0f;
944                break;
945            case PIPE_SPRITE_COORD_LOWER_LEFT:
946                rs->point_texcoord_top = 1.0f;
947                rs->point_texcoord_bottom = 0.0f;
948                break;
949        }
950    }
951
952    if (state->gl_rasterization_rules) {
953        rs->multisample_position_0 = 0x66666666;
954        rs->multisample_position_1 = 0x6666666;
955    }
956
957    return (void*)rs;
958}
959
960/* Bind rasterizer state. */
961static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
962{
963    struct r300_context* r300 = r300_context(pipe);
964    struct r300_rs_state* rs = (struct r300_rs_state*)state;
965    int last_sprite_coord_enable = r300->sprite_coord_enable;
966    boolean last_two_sided_color = r300->two_sided_color;
967
968    if (r300->draw && rs) {
969        draw_flush(r300->draw);
970        draw_set_rasterizer_state(r300->draw, &rs->rs_draw, state);
971    }
972
973    if (rs) {
974        r300->polygon_offset_enabled = (rs->rs.offset_point ||
975                                        rs->rs.offset_line ||
976                                        rs->rs.offset_tri);
977        r300->sprite_coord_enable = rs->rs.sprite_coord_enable;
978        r300->two_sided_color = rs->rs.light_twoside;
979    } else {
980        r300->polygon_offset_enabled = FALSE;
981        r300->sprite_coord_enable = 0;
982        r300->two_sided_color = FALSE;
983    }
984
985    UPDATE_STATE(state, r300->rs_state);
986    r300->rs_state.size = 25 + (r300->polygon_offset_enabled ? 5 : 0) +
987        (r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0) ? 5 : 0);
988
989    if (last_sprite_coord_enable != r300->sprite_coord_enable ||
990        last_two_sided_color != r300->two_sided_color) {
991        r300->rs_block_state.dirty = TRUE;
992    }
993}
994
995/* Free rasterizer state. */
996static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
997{
998    FREE(state);
999}
1000
1001static void*
1002        r300_create_sampler_state(struct pipe_context* pipe,
1003                                  const struct pipe_sampler_state* state)
1004{
1005    struct r300_context* r300 = r300_context(pipe);
1006    struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
1007    boolean is_r500 = r300->screen->caps.is_r500;
1008    int lod_bias;
1009    union util_color uc;
1010
1011    sampler->state = *state;
1012
1013    /* r300 doesn't handle CLAMP and MIRROR_CLAMP correctly when either MAG
1014     * or MIN filter is NEAREST. Since texwrap produces same results
1015     * for CLAMP and CLAMP_TO_EDGE, we use them instead. */
1016    if (sampler->state.min_img_filter == PIPE_TEX_FILTER_NEAREST ||
1017        sampler->state.mag_img_filter == PIPE_TEX_FILTER_NEAREST) {
1018        /* Wrap S. */
1019        if (sampler->state.wrap_s == PIPE_TEX_WRAP_CLAMP)
1020            sampler->state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1021        else if (sampler->state.wrap_s == PIPE_TEX_WRAP_MIRROR_CLAMP)
1022            sampler->state.wrap_s = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1023
1024        /* Wrap T. */
1025        if (sampler->state.wrap_t == PIPE_TEX_WRAP_CLAMP)
1026            sampler->state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1027        else if (sampler->state.wrap_t == PIPE_TEX_WRAP_MIRROR_CLAMP)
1028            sampler->state.wrap_t = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1029
1030        /* Wrap R. */
1031        if (sampler->state.wrap_r == PIPE_TEX_WRAP_CLAMP)
1032            sampler->state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
1033        else if (sampler->state.wrap_r == PIPE_TEX_WRAP_MIRROR_CLAMP)
1034            sampler->state.wrap_r = PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE;
1035    }
1036
1037    sampler->filter0 |=
1038        (r300_translate_wrap(sampler->state.wrap_s) << R300_TX_WRAP_S_SHIFT) |
1039        (r300_translate_wrap(sampler->state.wrap_t) << R300_TX_WRAP_T_SHIFT) |
1040        (r300_translate_wrap(sampler->state.wrap_r) << R300_TX_WRAP_R_SHIFT);
1041
1042    sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
1043                                                   state->mag_img_filter,
1044                                                   state->min_mip_filter,
1045                                                   state->max_anisotropy > 0);
1046
1047    sampler->filter0 |= r300_anisotropy(state->max_anisotropy);
1048
1049    /* Unfortunately, r300-r500 don't support floating-point mipmap lods. */
1050    /* We must pass these to the merge function to clamp them properly. */
1051    sampler->min_lod = MAX2((unsigned)state->min_lod, 0);
1052    sampler->max_lod = MAX2((unsigned)ceilf(state->max_lod), 0);
1053
1054    lod_bias = CLAMP((int)(state->lod_bias * 32 + 1), -(1 << 9), (1 << 9) - 1);
1055
1056    sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
1057
1058    /* This is very high quality anisotropic filtering for R5xx.
1059     * It's good for benchmarking the performance of texturing but
1060     * in practice we don't want to slow down the driver because it's
1061     * a pretty good performance killer. Feel free to play with it. */
1062    if (DBG_ON(r300, DBG_ANISOHQ) && is_r500) {
1063        sampler->filter1 |= r500_anisotropy(state->max_anisotropy);
1064    }
1065
1066    util_pack_color(state->border_color, PIPE_FORMAT_B8G8R8A8_UNORM, &uc);
1067    sampler->border_color = uc.ui;
1068
1069    /* R500-specific fixups and optimizations */
1070    if (r300->screen->caps.is_r500) {
1071        sampler->filter1 |= R500_BORDER_FIX;
1072    }
1073
1074    return (void*)sampler;
1075}
1076
1077static void r300_bind_sampler_states(struct pipe_context* pipe,
1078                                     unsigned count,
1079                                     void** states)
1080{
1081    struct r300_context* r300 = r300_context(pipe);
1082    struct r300_textures_state* state =
1083        (struct r300_textures_state*)r300->textures_state.state;
1084    unsigned tex_units = r300->screen->caps.num_tex_units;
1085
1086    if (count > tex_units) {
1087        return;
1088    }
1089
1090    memcpy(state->sampler_states, states, sizeof(void*) * count);
1091    state->sampler_state_count = count;
1092
1093    r300->textures_state.dirty = TRUE;
1094}
1095
1096static void r300_lacks_vertex_textures(struct pipe_context* pipe,
1097                                       unsigned count,
1098                                       void** states)
1099{
1100}
1101
1102static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
1103{
1104    FREE(state);
1105}
1106
1107static uint32_t r300_assign_texture_cache_region(unsigned index, unsigned num)
1108{
1109    /* This looks like a hack, but I believe it's suppose to work like
1110     * that. To illustrate how this works, let's assume you have 5 textures.
1111     * From docs, 5 and the successive numbers are:
1112     *
1113     * FOURTH_1     = 5
1114     * FOURTH_2     = 6
1115     * FOURTH_3     = 7
1116     * EIGHTH_0     = 8
1117     * EIGHTH_1     = 9
1118     *
1119     * First 3 textures will get 3/4 of size of the cache, divived evenly
1120     * between them. The last 1/4 of the cache must be divided between
1121     * the last 2 textures, each will therefore get 1/8 of the cache.
1122     * Why not just to use "5 + texture_index" ?
1123     *
1124     * This simple trick works for all "num" <= 16.
1125     */
1126    if (num <= 1)
1127        return R300_TX_CACHE(R300_TX_CACHE_WHOLE);
1128    else
1129        return R300_TX_CACHE(num + index);
1130}
1131
1132static void r300_set_fragment_sampler_views(struct pipe_context* pipe,
1133                                            unsigned count,
1134                                            struct pipe_sampler_view** views)
1135{
1136    struct r300_context* r300 = r300_context(pipe);
1137    struct r300_textures_state* state =
1138        (struct r300_textures_state*)r300->textures_state.state;
1139    struct r300_texture *texture;
1140    unsigned i, real_num_views = 0, view_index = 0;
1141    unsigned tex_units = r300->screen->caps.num_tex_units;
1142    boolean dirty_tex = FALSE;
1143
1144    if (count > tex_units) {
1145        return;
1146    }
1147
1148    /* Calculate the real number of views. */
1149    for (i = 0; i < count; i++) {
1150        if (views[i])
1151            real_num_views++;
1152    }
1153
1154    for (i = 0; i < count; i++) {
1155        if (&state->sampler_views[i]->base != views[i]) {
1156            pipe_sampler_view_reference(
1157                    (struct pipe_sampler_view**)&state->sampler_views[i],
1158                    views[i]);
1159
1160            if (!views[i]) {
1161                continue;
1162            }
1163
1164            /* A new sampler view (= texture)... */
1165            dirty_tex = TRUE;
1166
1167            /* Set the texrect factor in the fragment shader.
1168             * Needed for RECT and NPOT fallback. */
1169            texture = r300_texture(views[i]->texture);
1170            if (texture->uses_pitch) {
1171                r300->fs_rc_constant_state.dirty = TRUE;
1172            }
1173
1174            state->sampler_views[i]->texcache_region =
1175                r300_assign_texture_cache_region(view_index, real_num_views);
1176            view_index++;
1177        }
1178    }
1179
1180    for (i = count; i < tex_units; i++) {
1181        if (state->sampler_views[i]) {
1182            pipe_sampler_view_reference(
1183                    (struct pipe_sampler_view**)&state->sampler_views[i],
1184                    NULL);
1185        }
1186    }
1187
1188    state->sampler_view_count = count;
1189
1190    r300->textures_state.dirty = TRUE;
1191
1192    if (dirty_tex) {
1193        r300->texture_cache_inval.dirty = TRUE;
1194    }
1195}
1196
1197static struct pipe_sampler_view *
1198r300_create_sampler_view(struct pipe_context *pipe,
1199                         struct pipe_resource *texture,
1200                         const struct pipe_sampler_view *templ)
1201{
1202    struct r300_sampler_view *view = CALLOC_STRUCT(r300_sampler_view);
1203    struct r300_texture *tex = r300_texture(texture);
1204
1205    if (view) {
1206        view->base = *templ;
1207        view->base.reference.count = 1;
1208        view->base.context = pipe;
1209        view->base.texture = NULL;
1210        pipe_resource_reference(&view->base.texture, texture);
1211
1212        view->swizzle[0] = templ->swizzle_r;
1213        view->swizzle[1] = templ->swizzle_g;
1214        view->swizzle[2] = templ->swizzle_b;
1215        view->swizzle[3] = templ->swizzle_a;
1216
1217        view->format = tex->tx_format;
1218        view->format.format1 |= r300_translate_texformat(templ->format,
1219                                                         view->swizzle);
1220        if (r300_screen(pipe->screen)->caps.is_r500) {
1221            view->format.format2 |= r500_tx_format_msb_bit(templ->format);
1222        }
1223    }
1224
1225    return (struct pipe_sampler_view*)view;
1226}
1227
1228static void
1229r300_sampler_view_destroy(struct pipe_context *pipe,
1230                          struct pipe_sampler_view *view)
1231{
1232   pipe_resource_reference(&view->texture, NULL);
1233   FREE(view);
1234}
1235
1236static void r300_set_scissor_state(struct pipe_context* pipe,
1237                                   const struct pipe_scissor_state* state)
1238{
1239    struct r300_context* r300 = r300_context(pipe);
1240
1241    memcpy(r300->scissor_state.state, state,
1242        sizeof(struct pipe_scissor_state));
1243
1244    r300->scissor_state.dirty = TRUE;
1245}
1246
1247static void r300_set_viewport_state(struct pipe_context* pipe,
1248                                    const struct pipe_viewport_state* state)
1249{
1250    struct r300_context* r300 = r300_context(pipe);
1251    struct r300_viewport_state* viewport =
1252        (struct r300_viewport_state*)r300->viewport_state.state;
1253
1254    r300->viewport = *state;
1255
1256    if (r300->draw) {
1257        draw_flush(r300->draw);
1258        draw_set_viewport_state(r300->draw, state);
1259        viewport->vte_control = R300_VTX_XY_FMT | R300_VTX_Z_FMT;
1260        return;
1261    }
1262
1263    /* Do the transform in HW. */
1264    viewport->vte_control = R300_VTX_W0_FMT;
1265
1266    if (state->scale[0] != 1.0f) {
1267        viewport->xscale = state->scale[0];
1268        viewport->vte_control |= R300_VPORT_X_SCALE_ENA;
1269    }
1270    if (state->scale[1] != 1.0f) {
1271        viewport->yscale = state->scale[1];
1272        viewport->vte_control |= R300_VPORT_Y_SCALE_ENA;
1273    }
1274    if (state->scale[2] != 1.0f) {
1275        viewport->zscale = state->scale[2];
1276        viewport->vte_control |= R300_VPORT_Z_SCALE_ENA;
1277    }
1278    if (state->translate[0] != 0.0f) {
1279        viewport->xoffset = state->translate[0];
1280        viewport->vte_control |= R300_VPORT_X_OFFSET_ENA;
1281    }
1282    if (state->translate[1] != 0.0f) {
1283        viewport->yoffset = state->translate[1];
1284        viewport->vte_control |= R300_VPORT_Y_OFFSET_ENA;
1285    }
1286    if (state->translate[2] != 0.0f) {
1287        viewport->zoffset = state->translate[2];
1288        viewport->vte_control |= R300_VPORT_Z_OFFSET_ENA;
1289    }
1290
1291    r300->viewport_state.dirty = TRUE;
1292    if (r300->fs.state && r300_fs(r300)->shader->inputs.wpos != ATTR_UNUSED) {
1293        r300->fs_rc_constant_state.dirty = TRUE;
1294    }
1295}
1296
1297static void r300_set_vertex_buffers(struct pipe_context* pipe,
1298                                    unsigned count,
1299                                    const struct pipe_vertex_buffer* buffers)
1300{
1301    struct r300_context* r300 = r300_context(pipe);
1302    struct pipe_vertex_buffer *vbo;
1303    unsigned i, max_index = (1 << 24) - 1;
1304    boolean any_user_buffer = FALSE;
1305
1306    if (count == r300->vertex_buffer_count &&
1307        memcmp(r300->vertex_buffer, buffers,
1308            sizeof(struct pipe_vertex_buffer) * count) == 0) {
1309        return;
1310    }
1311
1312    if (r300->screen->caps.has_tcl) {
1313        /* HW TCL. */
1314        r300->incompatible_vb_layout = FALSE;
1315
1316        /* Check if the strides and offsets are aligned to the size of DWORD. */
1317        for (i = 0; i < count; i++) {
1318            if (buffers[i].buffer) {
1319                if (buffers[i].stride % 4 != 0 ||
1320                    buffers[i].buffer_offset % 4 != 0) {
1321                    r300->incompatible_vb_layout = TRUE;
1322                    break;
1323                }
1324            }
1325        }
1326
1327        for (i = 0; i < count; i++) {
1328            /* Why, yes, I AM casting away constness. How did you know? */
1329            vbo = (struct pipe_vertex_buffer*)&buffers[i];
1330
1331            /* Skip NULL buffers */
1332            if (!buffers[i].buffer) {
1333                continue;
1334            }
1335
1336            if (r300_buffer_is_user_buffer(vbo->buffer)) {
1337                any_user_buffer = TRUE;
1338            }
1339
1340            if (vbo->max_index == ~0) {
1341                /* if no VBO stride then only one vertex value so max index is 1 */
1342                /* should think about converting to VS constants like svga does */
1343                if (!vbo->stride)
1344                    vbo->max_index = 1;
1345                else
1346                    vbo->max_index =
1347                             (vbo->buffer->width0 - vbo->buffer_offset) / vbo->stride;
1348            }
1349
1350            max_index = MIN2(vbo->max_index, max_index);
1351        }
1352
1353        r300->any_user_vbs = any_user_buffer;
1354        r300->vertex_buffer_max_index = max_index;
1355
1356    } else {
1357        /* SW TCL. */
1358        draw_flush(r300->draw);
1359        draw_set_vertex_buffers(r300->draw, count, buffers);
1360    }
1361
1362    /* Common code. */
1363    for (i = 0; i < count; i++) {
1364        /* Reference our buffer. */
1365        pipe_resource_reference(&r300->vertex_buffer[i].buffer, buffers[i].buffer);
1366    }
1367    for (; i < r300->vertex_buffer_count; i++) {
1368        /* Dereference any old buffers. */
1369        pipe_resource_reference(&r300->vertex_buffer[i].buffer, NULL);
1370    }
1371
1372    memcpy(r300->vertex_buffer, buffers,
1373        sizeof(struct pipe_vertex_buffer) * count);
1374    r300->vertex_buffer_count = count;
1375}
1376
1377/* Initialize the PSC tables. */
1378static void r300_vertex_psc(struct r300_vertex_element_state *velems)
1379{
1380    struct r300_vertex_stream_state *vstream = &velems->vertex_stream;
1381    uint16_t type, swizzle;
1382    enum pipe_format format;
1383    unsigned i;
1384
1385    if (velems->count > 16) {
1386        fprintf(stderr, "r300: More than 16 vertex elements are not supported,"
1387                " requested %i, using 16.\n", velems->count);
1388        velems->count = 16;
1389    }
1390
1391    /* Vertex shaders have no semantics on their inputs,
1392     * so PSC should just route stuff based on the vertex elements,
1393     * and not on attrib information. */
1394    for (i = 0; i < velems->count; i++) {
1395        format = velems->hw_format[i];
1396
1397        type = r300_translate_vertex_data_type(format);
1398        if (type == R300_INVALID_FORMAT) {
1399            fprintf(stderr, "r300: Bad vertex format %s.\n",
1400                    util_format_short_name(format));
1401            assert(0);
1402            abort();
1403        }
1404
1405        type |= i << R300_DST_VEC_LOC_SHIFT;
1406        swizzle = r300_translate_vertex_data_swizzle(format);
1407
1408        if (i & 1) {
1409            vstream->vap_prog_stream_cntl[i >> 1] |= type << 16;
1410            vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle << 16;
1411        } else {
1412            vstream->vap_prog_stream_cntl[i >> 1] |= type;
1413            vstream->vap_prog_stream_cntl_ext[i >> 1] |= swizzle;
1414        }
1415    }
1416
1417    /* Set the last vector in the PSC. */
1418    if (i) {
1419        i -= 1;
1420    }
1421    vstream->vap_prog_stream_cntl[i >> 1] |=
1422        (R300_LAST_VEC << (i & 1 ? 16 : 0));
1423
1424    vstream->count = (i >> 1) + 1;
1425}
1426
1427#define FORMAT_REPLACE(what, withwhat) \
1428    case PIPE_FORMAT_##what: *format = PIPE_FORMAT_##withwhat; break
1429
1430static void* r300_create_vertex_elements_state(struct pipe_context* pipe,
1431                                               unsigned count,
1432                                               const struct pipe_vertex_element* attribs)
1433{
1434    struct r300_vertex_element_state *velems;
1435    unsigned i;
1436    enum pipe_format *format;
1437
1438    assert(count <= PIPE_MAX_ATTRIBS);
1439    velems = CALLOC_STRUCT(r300_vertex_element_state);
1440    if (velems != NULL) {
1441        velems->count = count;
1442        memcpy(velems->velem, attribs, sizeof(struct pipe_vertex_element) * count);
1443
1444        if (r300_screen(pipe->screen)->caps.has_tcl) {
1445            /* Set the best hw format in case the original format is not
1446             * supported by hw. */
1447            for (i = 0; i < count; i++) {
1448                velems->hw_format[i] = velems->velem[i].src_format;
1449                format = &velems->hw_format[i];
1450
1451                /* This is basically the list of unsupported formats.
1452                 * For now we don't care about the alignment, that's going to
1453                 * be sorted out after the PSC setup. */
1454                switch (*format) {
1455                    FORMAT_REPLACE(R64_FLOAT,           R32_FLOAT);
1456                    FORMAT_REPLACE(R64G64_FLOAT,        R32G32_FLOAT);
1457                    FORMAT_REPLACE(R64G64B64_FLOAT,     R32G32B32_FLOAT);
1458                    FORMAT_REPLACE(R64G64B64A64_FLOAT,  R32G32B32A32_FLOAT);
1459
1460                    FORMAT_REPLACE(R32_UNORM,           R32_FLOAT);
1461                    FORMAT_REPLACE(R32G32_UNORM,        R32G32_FLOAT);
1462                    FORMAT_REPLACE(R32G32B32_UNORM,     R32G32B32_FLOAT);
1463                    FORMAT_REPLACE(R32G32B32A32_UNORM,  R32G32B32A32_FLOAT);
1464
1465                    FORMAT_REPLACE(R32_USCALED,         R32_FLOAT);
1466                    FORMAT_REPLACE(R32G32_USCALED,      R32G32_FLOAT);
1467                    FORMAT_REPLACE(R32G32B32_USCALED,   R32G32B32_FLOAT);
1468                    FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT);
1469
1470                    FORMAT_REPLACE(R32_SNORM,           R32_FLOAT);
1471                    FORMAT_REPLACE(R32G32_SNORM,        R32G32_FLOAT);
1472                    FORMAT_REPLACE(R32G32B32_SNORM,     R32G32B32_FLOAT);
1473                    FORMAT_REPLACE(R32G32B32A32_SNORM,  R32G32B32A32_FLOAT);
1474
1475                    FORMAT_REPLACE(R32_SSCALED,         R32_FLOAT);
1476                    FORMAT_REPLACE(R32G32_SSCALED,      R32G32_FLOAT);
1477                    FORMAT_REPLACE(R32G32B32_SSCALED,   R32G32B32_FLOAT);
1478                    FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT);
1479
1480                    FORMAT_REPLACE(R32_FIXED,           R32_FLOAT);
1481                    FORMAT_REPLACE(R32G32_FIXED,        R32G32_FLOAT);
1482                    FORMAT_REPLACE(R32G32B32_FIXED,     R32G32B32_FLOAT);
1483                    FORMAT_REPLACE(R32G32B32A32_FIXED,  R32G32B32A32_FLOAT);
1484
1485                    default:;
1486                }
1487
1488                velems->incompatible_layout =
1489                        velems->incompatible_layout ||
1490                        velems->velem[i].src_format != velems->hw_format[i] ||
1491                        velems->velem[i].src_offset % 4 != 0;
1492            }
1493
1494            /* Now setup PSC.
1495             * The unused components will be replaced by (..., 0, 1). */
1496            r300_vertex_psc(velems);
1497
1498            /* Align the formats to the size of DWORD.
1499             * We only care about the blocksizes of the formats since
1500             * swizzles are already set up.
1501             * Also compute the vertex size. */
1502            for (i = 0; i < count; i++) {
1503                /* This is OK because we check for aligned strides too. */
1504                velems->hw_format_size[i] =
1505                    align(util_format_get_blocksize(velems->hw_format[i]), 4);
1506                velems->vertex_size_dwords += velems->hw_format_size[i] / 4;
1507            }
1508        }
1509    }
1510    return velems;
1511}
1512
1513static void r300_bind_vertex_elements_state(struct pipe_context *pipe,
1514                                            void *state)
1515{
1516    struct r300_context *r300 = r300_context(pipe);
1517    struct r300_vertex_element_state *velems = state;
1518
1519    if (velems == NULL) {
1520        return;
1521    }
1522
1523    r300->velems = velems;
1524
1525    if (r300->draw) {
1526        draw_flush(r300->draw);
1527        draw_set_vertex_elements(r300->draw, velems->count, velems->velem);
1528        return;
1529    }
1530
1531    UPDATE_STATE(&velems->vertex_stream, r300->vertex_stream_state);
1532    r300->vertex_stream_state.size = (1 + velems->vertex_stream.count) * 2;
1533}
1534
1535static void r300_delete_vertex_elements_state(struct pipe_context *pipe, void *state)
1536{
1537   FREE(state);
1538}
1539
1540static void* r300_create_vs_state(struct pipe_context* pipe,
1541                                  const struct pipe_shader_state* shader)
1542{
1543    struct r300_context* r300 = r300_context(pipe);
1544
1545    struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
1546
1547    /* Copy state directly into shader. */
1548    vs->state = *shader;
1549    vs->state.tokens = tgsi_dup_tokens(shader->tokens);
1550
1551    if (r300->screen->caps.has_tcl) {
1552        r300_init_vs_outputs(vs);
1553        r300_translate_vertex_shader(r300, vs);
1554    } else {
1555        r300_draw_init_vertex_shader(r300->draw, vs);
1556    }
1557
1558    return vs;
1559}
1560
1561static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
1562{
1563    struct r300_context* r300 = r300_context(pipe);
1564    struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
1565
1566    if (vs == NULL) {
1567        r300->vs_state.state = NULL;
1568        return;
1569    }
1570    if (vs == r300->vs_state.state) {
1571        return;
1572    }
1573    r300->vs_state.state = vs;
1574
1575    /* The majority of the RS block bits is dependent on the vertex shader. */
1576    r300->rs_block_state.dirty = TRUE; /* Will be updated before the emission. */
1577
1578    if (r300->screen->caps.has_tcl) {
1579        r300->vs_state.dirty = TRUE;
1580        r300->vs_state.size =
1581                vs->code.length + 18 +
1582                (vs->immediates_count ? vs->immediates_count * 4 + 3 : 0);
1583
1584        if (vs->externals_count) {
1585            r300->vs_constants.dirty = TRUE;
1586            r300->vs_constants.size = vs->externals_count * 4 + 3;
1587        } else {
1588            r300->vs_constants.size = 0;
1589        }
1590
1591        r300->pvs_flush.dirty = TRUE;
1592    } else {
1593        draw_flush(r300->draw);
1594        draw_bind_vertex_shader(r300->draw,
1595                (struct draw_vertex_shader*)vs->draw_vs);
1596    }
1597}
1598
1599static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
1600{
1601    struct r300_context* r300 = r300_context(pipe);
1602    struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
1603
1604    if (r300->screen->caps.has_tcl) {
1605        rc_constants_destroy(&vs->code.constants);
1606    } else {
1607        draw_delete_vertex_shader(r300->draw,
1608                (struct draw_vertex_shader*)vs->draw_vs);
1609    }
1610
1611    FREE((void*)vs->state.tokens);
1612    FREE(shader);
1613}
1614
1615static void r300_set_constant_buffer(struct pipe_context *pipe,
1616                                     uint shader, uint index,
1617                                     struct pipe_resource *buf)
1618{
1619    struct r300_context* r300 = r300_context(pipe);
1620    struct r300_constant_buffer *cbuf;
1621    struct pipe_transfer *tr;
1622    float *mapped;
1623    int max_size = 0, max_size_bytes = 0, clamped_size = 0;
1624
1625    switch (shader) {
1626        case PIPE_SHADER_VERTEX:
1627            cbuf = (struct r300_constant_buffer*)r300->vs_constants.state;
1628            max_size = 256;
1629            break;
1630        case PIPE_SHADER_FRAGMENT:
1631            cbuf = (struct r300_constant_buffer*)r300->fs_constants.state;
1632            if (r300->screen->caps.is_r500) {
1633                max_size = 256;
1634            } else {
1635                max_size = 32;
1636            }
1637            break;
1638        default:
1639            assert(0);
1640            return;
1641    }
1642    max_size_bytes = max_size * 4 * sizeof(float);
1643
1644    if (buf == NULL || buf->width0 == 0 ||
1645        (mapped = pipe_buffer_map(pipe, buf, PIPE_TRANSFER_READ, &tr)) == NULL)
1646    {
1647        cbuf->count = 0;
1648        return;
1649    }
1650
1651    if (shader == PIPE_SHADER_FRAGMENT ||
1652        (shader == PIPE_SHADER_VERTEX && r300->screen->caps.has_tcl)) {
1653        assert((buf->width0 % (4 * sizeof(float))) == 0);
1654
1655        /* Check the size of the constant buffer. */
1656        /* XXX Subtract immediates and RC_STATE_* variables. */
1657        if (buf->width0 > max_size_bytes) {
1658            fprintf(stderr, "r300: Max size of the constant buffer is "
1659                          "%i*4 floats.\n", max_size);
1660        }
1661
1662        clamped_size = MIN2(buf->width0, max_size_bytes);
1663        cbuf->count = clamped_size / (4 * sizeof(float));
1664
1665        if (shader == PIPE_SHADER_FRAGMENT && !r300->screen->caps.is_r500) {
1666            unsigned i,j;
1667
1668            /* Convert constants to float24. */
1669            for (i = 0; i < cbuf->count; i++)
1670                for (j = 0; j < 4; j++)
1671                    cbuf->constants[i][j] = pack_float24(mapped[i*4+j]);
1672        } else {
1673            memcpy(cbuf->constants, mapped, clamped_size);
1674        }
1675    }
1676
1677    if (shader == PIPE_SHADER_VERTEX) {
1678        if (r300->screen->caps.has_tcl) {
1679            if (r300->vs_constants.size) {
1680                r300->vs_constants.dirty = TRUE;
1681            }
1682            r300->pvs_flush.dirty = TRUE;
1683        } else if (r300->draw) {
1684            draw_set_mapped_constant_buffer(r300->draw, PIPE_SHADER_VERTEX,
1685                0, mapped, buf->width0);
1686        }
1687    } else if (shader == PIPE_SHADER_FRAGMENT) {
1688        r300->fs_constants.dirty = TRUE;
1689    }
1690
1691    pipe_buffer_unmap(pipe, buf, tr);
1692}
1693
1694void r300_init_state_functions(struct r300_context* r300)
1695{
1696    r300->context.create_blend_state = r300_create_blend_state;
1697    r300->context.bind_blend_state = r300_bind_blend_state;
1698    r300->context.delete_blend_state = r300_delete_blend_state;
1699
1700    r300->context.set_blend_color = r300_set_blend_color;
1701
1702    r300->context.set_clip_state = r300_set_clip_state;
1703    r300->context.set_sample_mask = r300_set_sample_mask;
1704
1705    r300->context.set_constant_buffer = r300_set_constant_buffer;
1706
1707    r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
1708    r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
1709    r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
1710
1711    r300->context.set_stencil_ref = r300_set_stencil_ref;
1712
1713    r300->context.set_framebuffer_state = r300_set_framebuffer_state;
1714
1715    r300->context.create_fs_state = r300_create_fs_state;
1716    r300->context.bind_fs_state = r300_bind_fs_state;
1717    r300->context.delete_fs_state = r300_delete_fs_state;
1718
1719    r300->context.set_polygon_stipple = r300_set_polygon_stipple;
1720
1721    r300->context.create_rasterizer_state = r300_create_rs_state;
1722    r300->context.bind_rasterizer_state = r300_bind_rs_state;
1723    r300->context.delete_rasterizer_state = r300_delete_rs_state;
1724
1725    r300->context.create_sampler_state = r300_create_sampler_state;
1726    r300->context.bind_fragment_sampler_states = r300_bind_sampler_states;
1727    r300->context.bind_vertex_sampler_states = r300_lacks_vertex_textures;
1728    r300->context.delete_sampler_state = r300_delete_sampler_state;
1729
1730    r300->context.set_fragment_sampler_views = r300_set_fragment_sampler_views;
1731    r300->context.create_sampler_view = r300_create_sampler_view;
1732    r300->context.sampler_view_destroy = r300_sampler_view_destroy;
1733
1734    r300->context.set_scissor_state = r300_set_scissor_state;
1735
1736    r300->context.set_viewport_state = r300_set_viewport_state;
1737
1738    r300->context.set_vertex_buffers = r300_set_vertex_buffers;
1739
1740    r300->context.create_vertex_elements_state = r300_create_vertex_elements_state;
1741    r300->context.bind_vertex_elements_state = r300_bind_vertex_elements_state;
1742    r300->context.delete_vertex_elements_state = r300_delete_vertex_elements_state;
1743
1744    r300->context.create_vs_state = r300_create_vs_state;
1745    r300->context.bind_vs_state = r300_bind_vs_state;
1746    r300->context.delete_vs_state = r300_delete_vs_state;
1747}
1748