r300_state.c revision 3f15acb7e8575faeacc50dcede6d68b1e583727d 
1/*
2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE. */
22
23#include "util/u_math.h"
24#include "util/u_pack_color.h"
25
26#include "util/u_debug.h"
27#include "pipe/internal/p_winsys_screen.h"
28
29#include "r300_context.h"
30#include "r300_reg.h"
31#include "r300_state_inlines.h"
32#include "r300_fs.h"
33
34/* r300_state: Functions used to intialize state context by translating
35 * Gallium state objects into semi-native r300 state objects. */
36
37/* Create a new blend state based on the CSO blend state.
38 *
39 * This encompasses alpha blending, logic/raster ops, and blend dithering. */
40static void* r300_create_blend_state(struct pipe_context* pipe,
41                                     const struct pipe_blend_state* state)
42{
43    struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
44
45    if (state->blend_enable) {
46        /* XXX for now, always do separate alpha...
47         * is it faster to do it with one reg? */
48        blend->blend_control = R300_ALPHA_BLEND_ENABLE |
49                R300_SEPARATE_ALPHA_ENABLE |
50                R300_READ_ENABLE |
51                r300_translate_blend_function(state->rgb_func) |
52                (r300_translate_blend_factor(state->rgb_src_factor) <<
53                    R300_SRC_BLEND_SHIFT) |
54                (r300_translate_blend_factor(state->rgb_dst_factor) <<
55                    R300_DST_BLEND_SHIFT);
56        blend->alpha_blend_control =
57                r300_translate_blend_function(state->alpha_func) |
58                (r300_translate_blend_factor(state->alpha_src_factor) <<
59                    R300_SRC_BLEND_SHIFT) |
60                (r300_translate_blend_factor(state->alpha_dst_factor) <<
61                    R300_DST_BLEND_SHIFT);
62    }
63
64    /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
65    if (state->logicop_enable) {
66        blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
67                (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
68    }
69
70    if (state->dither) {
71        blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
72                R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
73    }
74
75    return (void*)blend;
76}
77
78/* Bind blend state. */
79static void r300_bind_blend_state(struct pipe_context* pipe,
80                                  void* state)
81{
82    struct r300_context* r300 = r300_context(pipe);
83
84    r300->blend_state = (struct r300_blend_state*)state;
85    r300->dirty_state |= R300_NEW_BLEND;
86}
87
88/* Free blend state. */
89static void r300_delete_blend_state(struct pipe_context* pipe,
90                                    void* state)
91{
92    FREE(state);
93}
94
95/* Set blend color.
96 * Setup both R300 and R500 registers, figure out later which one to write. */
97static void r300_set_blend_color(struct pipe_context* pipe,
98                                 const struct pipe_blend_color* color)
99{
100    struct r300_context* r300 = r300_context(pipe);
101    ubyte ur, ug, ub, ua;
102
103    ur = float_to_ubyte(color->color[0]);
104    ug = float_to_ubyte(color->color[1]);
105    ub = float_to_ubyte(color->color[2]);
106    ua = float_to_ubyte(color->color[3]);
107
108    util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
109            &r300->blend_color_state->blend_color);
110
111    /* XXX this is wrong */
112    r300->blend_color_state->blend_color_red_alpha = ur | (ua << 16);
113    r300->blend_color_state->blend_color_green_blue = ub | (ug << 16);
114
115    r300->dirty_state |= R300_NEW_BLEND_COLOR;
116}
117
118static void r300_set_clip_state(struct pipe_context* pipe,
119                                const struct pipe_clip_state* state)
120{
121    struct r300_context* r300 = r300_context(pipe);
122
123    if (r300_screen(pipe->screen)->caps->has_tcl) {
124        r300->clip_state = *state;
125        r300->dirty_state |= R300_NEW_CLIP;
126    } else {
127        draw_flush(r300->draw);
128        draw_set_clip_state(r300->draw, state);
129    }
130}
131
132static void
133    r300_set_constant_buffer(struct pipe_context* pipe,
134                             uint shader, uint index,
135                             const struct pipe_constant_buffer* buffer)
136{
137    struct r300_context* r300 = r300_context(pipe);
138    int i = r300->shader_constants[shader].user_count;
139
140    /* This entire chunk of code seems ever-so-slightly baked.
141     * It's as if I've got pipe_buffer* matryoshkas... */
142    if (buffer && buffer->buffer && buffer->buffer->size) {
143        void* map = pipe->winsys->buffer_map(pipe->winsys, buffer->buffer,
144                                             PIPE_BUFFER_USAGE_CPU_READ);
145        memcpy(r300->shader_constants[shader].constants,
146            map, buffer->buffer->size);
147        pipe->winsys->buffer_unmap(pipe->winsys, buffer->buffer);
148
149        r300->shader_constants[shader].user_count =
150            buffer->buffer->size / (sizeof(float) * 4);
151    } else {
152        r300->shader_constants[shader].user_count = 0;
153    }
154
155    r300->dirty_state |= R300_NEW_CONSTANTS;
156
157    /* If the number of constants have changed, invalidate the shader. */
158    if (r300->shader_constants[shader].user_count != i) {
159        if (shader == PIPE_SHADER_FRAGMENT && r300->fs &&
160                r300->fs->uses_imms) {
161            r300->fs->translated = FALSE;
162            r300_translate_fragment_shader(r300, r300->fs);
163        } else if (shader == PIPE_SHADER_VERTEX && r300->vs &&
164                r300->vs->uses_imms) {
165            r300->vs->translated = FALSE;
166            r300_translate_vertex_shader(r300, r300->vs);
167        }
168    }
169}
170
171/* Create a new depth, stencil, and alpha state based on the CSO dsa state.
172 *
173 * This contains the depth buffer, stencil buffer, alpha test, and such.
174 * On the Radeon, depth and stencil buffer setup are intertwined, which is
175 * the reason for some of the strange-looking assignments across registers. */
176static void*
177        r300_create_dsa_state(struct pipe_context* pipe,
178                              const struct pipe_depth_stencil_alpha_state* state)
179{
180    struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
181
182    /* Depth test setup. */
183    if (state->depth.enabled) {
184        dsa->z_buffer_control |= R300_Z_ENABLE;
185
186        if (state->depth.writemask) {
187            dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
188        }
189
190        dsa->z_stencil_control |=
191            (r300_translate_depth_stencil_function(state->depth.func) <<
192                R300_Z_FUNC_SHIFT);
193    }
194
195    /* Stencil buffer setup. */
196    if (state->stencil[0].enabled) {
197        dsa->z_buffer_control |= R300_STENCIL_ENABLE;
198        dsa->z_stencil_control |=
199            (r300_translate_depth_stencil_function(state->stencil[0].func) <<
200                R300_S_FRONT_FUNC_SHIFT) |
201            (r300_translate_stencil_op(state->stencil[0].fail_op) <<
202                R300_S_FRONT_SFAIL_OP_SHIFT) |
203            (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
204                R300_S_FRONT_ZPASS_OP_SHIFT) |
205            (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
206                R300_S_FRONT_ZFAIL_OP_SHIFT);
207
208        dsa->stencil_ref_mask = (state->stencil[0].ref_value) |
209                (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
210                (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
211
212        if (state->stencil[1].enabled) {
213            dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
214            dsa->z_stencil_control |=
215            (r300_translate_depth_stencil_function(state->stencil[1].func) <<
216                R300_S_BACK_FUNC_SHIFT) |
217            (r300_translate_stencil_op(state->stencil[1].fail_op) <<
218                R300_S_BACK_SFAIL_OP_SHIFT) |
219            (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
220                R300_S_BACK_ZPASS_OP_SHIFT) |
221            (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
222                R300_S_BACK_ZFAIL_OP_SHIFT);
223
224            dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
225                (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
226                (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
227        }
228    }
229
230    /* Alpha test setup. */
231    if (state->alpha.enabled) {
232        dsa->alpha_function =
233            r300_translate_alpha_function(state->alpha.func) |
234            R300_FG_ALPHA_FUNC_ENABLE;
235        dsa->alpha_reference = CLAMP(state->alpha.ref_value * 1023.0f,
236                                     0, 1023);
237    } else {
238        dsa->z_buffer_top = R300_ZTOP_ENABLE;
239    }
240
241    return (void*)dsa;
242}
243
244/* Bind DSA state. */
245static void r300_bind_dsa_state(struct pipe_context* pipe,
246                                void* state)
247{
248    struct r300_context* r300 = r300_context(pipe);
249
250    r300->dsa_state = (struct r300_dsa_state*)state;
251    r300->dirty_state |= R300_NEW_DSA;
252}
253
254/* Free DSA state. */
255static void r300_delete_dsa_state(struct pipe_context* pipe,
256                                  void* state)
257{
258    FREE(state);
259}
260
261static void r300_set_edgeflags(struct pipe_context* pipe,
262                               const unsigned* bitfield)
263{
264    /* XXX you know it's bad when i915 has this blank too */
265    /* XXX and even worse, I have no idea WTF the bitfield is */
266}
267
268static void
269    r300_set_framebuffer_state(struct pipe_context* pipe,
270                               const struct pipe_framebuffer_state* state)
271{
272    struct r300_context* r300 = r300_context(pipe);
273
274    draw_flush(r300->draw);
275
276    r300->framebuffer_state = *state;
277
278    r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
279}
280
281/* Create fragment shader state. */
282static void* r300_create_fs_state(struct pipe_context* pipe,
283                                  const struct pipe_shader_state* shader)
284{
285    struct r300_context* r300 = r300_context(pipe);
286    struct r300_fragment_shader* fs = NULL;
287
288    if (r300_screen(r300->context.screen)->caps->is_r500) {
289        fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r5xx_fragment_shader);
290    } else {
291        fs = (struct r300_fragment_shader*)CALLOC_STRUCT(r3xx_fragment_shader);
292    }
293
294    /* Copy state directly into shader. */
295    fs->state = *shader;
296    fs->state.tokens = tgsi_dup_tokens(shader->tokens);
297
298    tgsi_scan_shader(shader->tokens, &fs->info);
299
300    return (void*)fs;
301}
302
303/* Bind fragment shader state. */
304static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
305{
306    struct r300_context* r300 = r300_context(pipe);
307    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
308
309    if (fs == NULL) {
310        r300->fs = NULL;
311        return;
312    } else if (!fs->translated) {
313        r300_translate_fragment_shader(r300, fs);
314    }
315
316    fs->translated = TRUE;
317    r300->fs = fs;
318
319    r300->dirty_state |= R300_NEW_FRAGMENT_SHADER;
320}
321
322/* Delete fragment shader state. */
323static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
324{
325    struct r300_fragment_shader* fs = (struct r300_fragment_shader*)shader;
326    FREE(fs->state.tokens);
327    FREE(shader);
328}
329
330static void r300_set_polygon_stipple(struct pipe_context* pipe,
331                                     const struct pipe_poly_stipple* state)
332{
333    /* XXX no idea how to set this up, but not terribly important */
334}
335
336/* Create a new rasterizer state based on the CSO rasterizer state.
337 *
338 * This is a very large chunk of state, and covers most of the graphics
339 * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
340 *
341 * In a not entirely unironic sidenote, this state has nearly nothing to do
342 * with the actual block on the Radeon called the rasterizer (RS). */
343static void* r300_create_rs_state(struct pipe_context* pipe,
344                                  const struct pipe_rasterizer_state* state)
345{
346    struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
347
348    /* Copy rasterizer state for Draw. */
349    rs->rs = *state;
350
351    rs->enable_vte = !state->bypass_vs_clip_and_viewport;
352
353    /* If bypassing TCL, or if no TCL engine is present, turn off the HW TCL.
354     * Else, enable HW TCL and force Draw's TCL off. */
355    if (state->bypass_vs_clip_and_viewport ||
356            !r300_screen(pipe->screen)->caps->has_tcl) {
357        rs->vap_control_status = R300_VAP_TCL_BYPASS;
358    } else {
359        rs->rs.bypass_vs_clip_and_viewport = TRUE;
360        rs->vap_control_status = 0;
361    }
362
363    rs->point_size = pack_float_16_6x(state->point_size) |
364        (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
365
366    rs->point_minmax =
367        ((int)(state->point_size_min * 6.0) <<
368         R300_GA_POINT_MINMAX_MIN_SHIFT) |
369        ((int)(state->point_size_max * 6.0) <<
370         R300_GA_POINT_MINMAX_MAX_SHIFT);
371
372    rs->line_control = pack_float_16_6x(state->line_width) |
373        R300_GA_LINE_CNTL_END_TYPE_COMP;
374
375    /* Radeons don't think in "CW/CCW", they think in "front/back". */
376    if (state->front_winding == PIPE_WINDING_CW) {
377        rs->cull_mode = R300_FRONT_FACE_CW;
378
379        if (state->offset_cw) {
380            rs->polygon_offset_enable |= R300_FRONT_ENABLE;
381        }
382        if (state->offset_ccw) {
383            rs->polygon_offset_enable |= R300_BACK_ENABLE;
384        }
385    } else {
386        rs->cull_mode = R300_FRONT_FACE_CCW;
387
388        if (state->offset_ccw) {
389            rs->polygon_offset_enable |= R300_FRONT_ENABLE;
390        }
391        if (state->offset_cw) {
392            rs->polygon_offset_enable |= R300_BACK_ENABLE;
393        }
394    }
395    if (state->front_winding & state->cull_mode) {
396        rs->cull_mode |= R300_CULL_FRONT;
397    }
398    if (~(state->front_winding) & state->cull_mode) {
399        rs->cull_mode |= R300_CULL_BACK;
400    }
401
402    if (rs->polygon_offset_enable) {
403        rs->depth_offset_front = rs->depth_offset_back =
404            fui(state->offset_units);
405        rs->depth_scale_front = rs->depth_scale_back =
406            fui(state->offset_scale);
407    }
408
409    if (state->line_stipple_enable) {
410        rs->line_stipple_config =
411            R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
412            (fui((float)state->line_stipple_factor) &
413                R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
414        /* XXX this might need to be scaled up */
415        rs->line_stipple_value = state->line_stipple_pattern;
416    }
417
418    if (state->flatshade) {
419        rs->color_control = R300_SHADE_MODEL_FLAT;
420    } else {
421        rs->color_control = R300_SHADE_MODEL_SMOOTH;
422    }
423
424    if (!state->flatshade_first) {
425        rs->color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST;
426    }
427
428    return (void*)rs;
429}
430
431/* Bind rasterizer state. */
432static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
433{
434    struct r300_context* r300 = r300_context(pipe);
435    struct r300_rs_state* rs = (struct r300_rs_state*)state;
436
437    draw_flush(r300->draw);
438    draw_set_rasterizer_state(r300->draw, &rs->rs);
439
440    r300->rs_state = rs;
441    r300->dirty_state |= R300_NEW_RASTERIZER;
442}
443
444/* Free rasterizer state. */
445static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
446{
447    FREE(state);
448}
449
450static void*
451        r300_create_sampler_state(struct pipe_context* pipe,
452                                  const struct pipe_sampler_state* state)
453{
454    struct r300_context* r300 = r300_context(pipe);
455    struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
456    int lod_bias;
457
458    sampler->filter0 |=
459        (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
460        (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
461        (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
462
463    sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
464                                                   state->mag_img_filter,
465                                                   state->min_mip_filter);
466
467    lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
468
469    sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
470
471    sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
472
473    util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM,
474                    &sampler->border_color);
475
476    /* R500-specific fixups and optimizations */
477    if (r300_screen(r300->context.screen)->caps->is_r500) {
478        sampler->filter1 |= R500_BORDER_FIX;
479    }
480
481    return (void*)sampler;
482}
483
484static void r300_bind_sampler_states(struct pipe_context* pipe,
485                                     unsigned count,
486                                     void** states)
487{
488    struct r300_context* r300 = r300_context(pipe);
489    int i;
490
491    if (count > 8) {
492        return;
493    }
494
495    for (i = 0; i < count; i++) {
496        if (r300->sampler_states[i] != states[i]) {
497            r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
498            r300->dirty_state |= (R300_NEW_SAMPLER << i);
499        }
500    }
501
502    r300->sampler_count = count;
503}
504
505static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
506{
507    FREE(state);
508}
509
510static void r300_set_sampler_textures(struct pipe_context* pipe,
511                                      unsigned count,
512                                      struct pipe_texture** texture)
513{
514    struct r300_context* r300 = r300_context(pipe);
515    int i;
516
517    /* XXX magic num */
518    if (count > 8) {
519        return;
520    }
521
522    for (i = 0; i < count; i++) {
523        if (r300->textures[i] != (struct r300_texture*)texture[i]) {
524            pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
525                texture[i]);
526            r300->dirty_state |= (R300_NEW_TEXTURE << i);
527        }
528    }
529
530    for (i = count; i < 8; i++) {
531        if (r300->textures[i]) {
532            pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
533                NULL);
534            r300->dirty_state |= (R300_NEW_TEXTURE << i);
535        }
536    }
537
538    r300->texture_count = count;
539}
540
541static void r300_set_scissor_state(struct pipe_context* pipe,
542                                   const struct pipe_scissor_state* state)
543{
544    struct r300_context* r300 = r300_context(pipe);
545
546    if (r300_screen(r300->context.screen)->caps->is_r500) {
547        r300->scissor_state->scissor_top_left =
548            (state->minx << R300_SCISSORS_X_SHIFT) |
549            (state->miny << R300_SCISSORS_Y_SHIFT);
550        r300->scissor_state->scissor_bottom_right =
551            (state->maxx << R300_SCISSORS_X_SHIFT) |
552            (state->maxy << R300_SCISSORS_Y_SHIFT);
553    } else {
554        /* Offset of 1440 in non-R500 chipsets. */
555        r300->scissor_state->scissor_top_left =
556            ((state->minx + 1440) << R300_SCISSORS_X_SHIFT) |
557            ((state->miny + 1440) << R300_SCISSORS_Y_SHIFT);
558        r300->scissor_state->scissor_bottom_right =
559            ((state->maxx + 1440) << R300_SCISSORS_X_SHIFT) |
560            ((state->maxy + 1440) << R300_SCISSORS_Y_SHIFT);
561    }
562
563    r300->dirty_state |= R300_NEW_SCISSOR;
564}
565
566static void r300_set_viewport_state(struct pipe_context* pipe,
567                                    const struct pipe_viewport_state* state)
568{
569    struct r300_context* r300 = r300_context(pipe);
570
571    /* Do the transform in HW. */
572    r300->viewport_state->vte_control = R300_VTX_W0_FMT;
573
574    if (state->scale[0] != 1.0f) {
575        assert(state->scale[0] != 0.0f);
576        r300->viewport_state->xscale = state->scale[0];
577        r300->viewport_state->vte_control |= R300_VPORT_X_SCALE_ENA;
578    }
579    if (state->scale[1] != 1.0f) {
580        assert(state->scale[1] != 0.0f);
581        r300->viewport_state->yscale = state->scale[1];
582        r300->viewport_state->vte_control |= R300_VPORT_Y_SCALE_ENA;
583    }
584    if (state->scale[2] != 1.0f) {
585        assert(state->scale[2] != 0.0f);
586        r300->viewport_state->zscale = state->scale[2];
587        r300->viewport_state->vte_control |= R300_VPORT_Z_SCALE_ENA;
588    }
589    if (state->translate[0] != 0.0f) {
590        r300->viewport_state->xoffset = state->translate[0];
591        r300->viewport_state->vte_control |= R300_VPORT_X_OFFSET_ENA;
592    }
593    if (state->translate[1] != 0.0f) {
594        r300->viewport_state->yoffset = state->translate[1];
595        r300->viewport_state->vte_control |= R300_VPORT_Y_OFFSET_ENA;
596    }
597    if (state->translate[2] != 0.0f) {
598        r300->viewport_state->zoffset = state->translate[2];
599        r300->viewport_state->vte_control |= R300_VPORT_Z_OFFSET_ENA;
600    }
601
602    r300->dirty_state |= R300_NEW_VIEWPORT;
603}
604
605static void r300_set_vertex_buffers(struct pipe_context* pipe,
606                                    unsigned count,
607                                    const struct pipe_vertex_buffer* buffers)
608{
609    struct r300_context* r300 = r300_context(pipe);
610
611    memcpy(r300->vertex_buffers, buffers,
612        sizeof(struct pipe_vertex_buffer) * count);
613
614    r300->vertex_buffer_count = count;
615
616    draw_flush(r300->draw);
617    draw_set_vertex_buffers(r300->draw, count, buffers);
618}
619
620static void r300_set_vertex_elements(struct pipe_context* pipe,
621                                    unsigned count,
622                                    const struct pipe_vertex_element* elements)
623{
624    struct r300_context* r300 = r300_context(pipe);
625
626    draw_flush(r300->draw);
627    draw_set_vertex_elements(r300->draw, count, elements);
628}
629
630static void* r300_create_vs_state(struct pipe_context* pipe,
631                                  const struct pipe_shader_state* shader)
632{
633    struct r300_context* r300 = r300_context(pipe);
634
635    if (r300_screen(pipe->screen)->caps->has_tcl) {
636        struct r300_vertex_shader* vs = CALLOC_STRUCT(r300_vertex_shader);
637        /* Copy state directly into shader. */
638        vs->state = *shader;
639        vs->state.tokens = tgsi_dup_tokens(shader->tokens);
640
641        tgsi_scan_shader(shader->tokens, &vs->info);
642
643        /* Appease Draw. */
644        vs->draw = draw_create_vertex_shader(r300->draw, shader);
645
646        return (void*)vs;
647    } else {
648        return draw_create_vertex_shader(r300->draw, shader);
649    }
650}
651
652static void r300_bind_vs_state(struct pipe_context* pipe, void* shader)
653{
654    struct r300_context* r300 = r300_context(pipe);
655
656    draw_flush(r300->draw);
657
658    if (r300_screen(pipe->screen)->caps->has_tcl) {
659        struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
660
661        if (vs == NULL) {
662            r300->vs = NULL;
663            return;
664        } else if (!vs->translated) {
665            r300_translate_vertex_shader(r300, vs);
666        }
667
668        draw_bind_vertex_shader(r300->draw, vs->draw);
669        r300->vs = vs;
670        r300->dirty_state |= R300_NEW_VERTEX_SHADER;
671    } else {
672        draw_bind_vertex_shader(r300->draw,
673                (struct draw_vertex_shader*)shader);
674    }
675}
676
677static void r300_delete_vs_state(struct pipe_context* pipe, void* shader)
678{
679    struct r300_context* r300 = r300_context(pipe);
680
681    if (r300_screen(pipe->screen)->caps->has_tcl) {
682        struct r300_vertex_shader* vs = (struct r300_vertex_shader*)shader;
683
684        draw_delete_vertex_shader(r300->draw, vs->draw);
685        FREE(vs->state.tokens);
686        FREE(shader);
687    } else {
688        draw_delete_vertex_shader(r300->draw,
689                (struct draw_vertex_shader*)shader);
690    }
691}
692
693void r300_init_state_functions(struct r300_context* r300)
694{
695    r300->context.create_blend_state = r300_create_blend_state;
696    r300->context.bind_blend_state = r300_bind_blend_state;
697    r300->context.delete_blend_state = r300_delete_blend_state;
698
699    r300->context.set_blend_color = r300_set_blend_color;
700
701    r300->context.set_clip_state = r300_set_clip_state;
702
703    r300->context.set_constant_buffer = r300_set_constant_buffer;
704
705    r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
706    r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
707    r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
708
709    r300->context.set_edgeflags = r300_set_edgeflags;
710
711    r300->context.set_framebuffer_state = r300_set_framebuffer_state;
712
713    r300->context.create_fs_state = r300_create_fs_state;
714    r300->context.bind_fs_state = r300_bind_fs_state;
715    r300->context.delete_fs_state = r300_delete_fs_state;
716
717    r300->context.set_polygon_stipple = r300_set_polygon_stipple;
718
719    r300->context.create_rasterizer_state = r300_create_rs_state;
720    r300->context.bind_rasterizer_state = r300_bind_rs_state;
721    r300->context.delete_rasterizer_state = r300_delete_rs_state;
722
723    r300->context.create_sampler_state = r300_create_sampler_state;
724    r300->context.bind_sampler_states = r300_bind_sampler_states;
725    r300->context.delete_sampler_state = r300_delete_sampler_state;
726
727    r300->context.set_sampler_textures = r300_set_sampler_textures;
728
729    r300->context.set_scissor_state = r300_set_scissor_state;
730
731    r300->context.set_viewport_state = r300_set_viewport_state;
732
733    r300->context.set_vertex_buffers = r300_set_vertex_buffers;
734    r300->context.set_vertex_elements = r300_set_vertex_elements;
735
736    r300->context.create_vs_state = r300_create_vs_state;
737    r300->context.bind_vs_state = r300_bind_vs_state;
738    r300->context.delete_vs_state = r300_delete_vs_state;
739}
740