2 * Copyright 2008 Corbin Simpson <MostAwesomeDude@gmail.com>
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:
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
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. */
23 #include "util/u_math.h"
24 #include "util/u_pack_color.h"
26 #include "util/u_debug.h"
27 #include "pipe/internal/p_winsys_screen.h"
29 #include "r300_context.h"
31 #include "r300_state_inlines.h"
32 #include "r300_state_shader.h"
34 /* r300_state: Functions used to intialize state context by translating
35 * Gallium state objects into semi-native r300 state objects. */
37 /* Create a new blend state based on the CSO blend state.
39 * This encompasses alpha blending, logic/raster ops, and blend dithering. */
40 static void* r300_create_blend_state(struct pipe_context* pipe,
41 const struct pipe_blend_state* state)
43 struct r300_blend_state* blend = CALLOC_STRUCT(r300_blend_state);
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 |
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);
64 /* PIPE_LOGICOP_* don't need to be translated, fortunately. */
65 /* XXX are logicops still allowed if blending's disabled?
66 * Does Gallium take care of it for us? */
67 if (state->logicop_enable) {
68 blend->rop = R300_RB3D_ROPCNTL_ROP_ENABLE |
69 (state->logicop_func) << R300_RB3D_ROPCNTL_ROP_SHIFT;
73 blend->dither = R300_RB3D_DITHER_CTL_DITHER_MODE_LUT |
74 R300_RB3D_DITHER_CTL_ALPHA_DITHER_MODE_LUT;
80 /* Bind blend state. */
81 static void r300_bind_blend_state(struct pipe_context* pipe,
84 struct r300_context* r300 = r300_context(pipe);
86 r300->blend_state = (struct r300_blend_state*)state;
87 r300->dirty_state |= R300_NEW_BLEND;
90 /* Free blend state. */
91 static void r300_delete_blend_state(struct pipe_context* pipe,
98 * Setup both R300 and R500 registers, figure out later which one to write. */
99 static void r300_set_blend_color(struct pipe_context* pipe,
100 const struct pipe_blend_color* color)
102 struct r300_context* r300 = r300_context(pipe);
103 ubyte ur, ug, ub, ua;
105 ur = float_to_ubyte(color->color[0]);
106 ug = float_to_ubyte(color->color[1]);
107 ub = float_to_ubyte(color->color[2]);
108 ua = float_to_ubyte(color->color[3]);
110 util_pack_color(color->color, PIPE_FORMAT_A8R8G8B8_UNORM,
111 &r300->blend_color_state->blend_color);
113 /* XXX this is wrong */
114 r300->blend_color_state->blend_color_red_alpha = ur | (ua << 16);
115 r300->blend_color_state->blend_color_green_blue = ub | (ug << 16);
117 r300->dirty_state |= R300_NEW_BLEND_COLOR;
120 static void r300_set_clip_state(struct pipe_context* pipe,
121 const struct pipe_clip_state* state)
123 struct r300_context* r300 = r300_context(pipe);
125 draw_flush(r300->draw);
126 draw_set_clip_state(r300->draw, state);
130 r300_set_constant_buffer(struct pipe_context* pipe,
131 uint shader, uint index,
132 const struct pipe_constant_buffer* buffer)
134 struct r300_context* r300 = r300_context(pipe);
136 /* This entire chunk of code seems ever-so-slightly baked.
137 * It's as if I've got pipe_buffer* matryoshkas... */
138 if (buffer && buffer->buffer && buffer->buffer->size) {
139 void* map = pipe->winsys->buffer_map(pipe->winsys, buffer->buffer,
140 PIPE_BUFFER_USAGE_CPU_READ);
141 memcpy(r300->shader_constants[shader].constants,
142 map, buffer->buffer->size);
143 pipe->winsys->buffer_unmap(pipe->winsys, buffer->buffer);
145 r300->shader_constants[shader].user_count =
146 buffer->buffer->size / (sizeof(float) * 4);
148 r300->shader_constants[shader].user_count = 0;
151 r300->dirty_state |= R300_NEW_CONSTANTS;
154 /* Create a new depth, stencil, and alpha state based on the CSO dsa state.
156 * This contains the depth buffer, stencil buffer, alpha test, and such.
157 * On the Radeon, depth and stencil buffer setup are intertwined, which is
158 * the reason for some of the strange-looking assignments across registers. */
160 r300_create_dsa_state(struct pipe_context* pipe,
161 const struct pipe_depth_stencil_alpha_state* state)
163 struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
165 /* Depth test setup. */
166 if (state->depth.enabled) {
167 dsa->z_buffer_control |= R300_Z_ENABLE;
169 if (state->depth.writemask) {
170 dsa->z_buffer_control |= R300_Z_WRITE_ENABLE;
173 dsa->z_stencil_control |=
174 (r300_translate_depth_stencil_function(state->depth.func) <<
178 /* Stencil buffer setup. */
179 if (state->stencil[0].enabled) {
180 dsa->z_buffer_control |= R300_STENCIL_ENABLE;
181 dsa->z_stencil_control |=
182 (r300_translate_depth_stencil_function(state->stencil[0].func) <<
183 R300_S_FRONT_FUNC_SHIFT) |
184 (r300_translate_stencil_op(state->stencil[0].fail_op) <<
185 R300_S_FRONT_SFAIL_OP_SHIFT) |
186 (r300_translate_stencil_op(state->stencil[0].zpass_op) <<
187 R300_S_FRONT_ZPASS_OP_SHIFT) |
188 (r300_translate_stencil_op(state->stencil[0].zfail_op) <<
189 R300_S_FRONT_ZFAIL_OP_SHIFT);
191 dsa->stencil_ref_mask = (state->stencil[0].ref_value) |
192 (state->stencil[0].valuemask << R300_STENCILMASK_SHIFT) |
193 (state->stencil[0].writemask << R300_STENCILWRITEMASK_SHIFT);
195 if (state->stencil[1].enabled) {
196 dsa->z_buffer_control |= R300_STENCIL_FRONT_BACK;
197 dsa->z_stencil_control |=
198 (r300_translate_depth_stencil_function(state->stencil[1].func) <<
199 R300_S_BACK_FUNC_SHIFT) |
200 (r300_translate_stencil_op(state->stencil[1].fail_op) <<
201 R300_S_BACK_SFAIL_OP_SHIFT) |
202 (r300_translate_stencil_op(state->stencil[1].zpass_op) <<
203 R300_S_BACK_ZPASS_OP_SHIFT) |
204 (r300_translate_stencil_op(state->stencil[1].zfail_op) <<
205 R300_S_BACK_ZFAIL_OP_SHIFT);
207 dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
208 (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
209 (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
213 /* Alpha test setup. */
214 if (state->alpha.enabled) {
215 dsa->alpha_function =
216 r300_translate_alpha_function(state->alpha.func) |
217 R300_FG_ALPHA_FUNC_ENABLE;
218 dsa->alpha_reference = CLAMP(state->alpha.ref_value * 1023.0f,
221 dsa->z_buffer_top = R300_ZTOP_ENABLE;
227 /* Bind DSA state. */
228 static void r300_bind_dsa_state(struct pipe_context* pipe,
231 struct r300_context* r300 = r300_context(pipe);
233 r300->dsa_state = (struct r300_dsa_state*)state;
234 r300->dirty_state |= R300_NEW_DSA;
237 /* Free DSA state. */
238 static void r300_delete_dsa_state(struct pipe_context* pipe,
244 static void r300_set_edgeflags(struct pipe_context* pipe,
245 const unsigned* bitfield)
247 /* XXX you know it's bad when i915 has this blank too */
251 r300_set_framebuffer_state(struct pipe_context* pipe,
252 const struct pipe_framebuffer_state* state)
254 struct r300_context* r300 = r300_context(pipe);
256 draw_flush(r300->draw);
258 r300->framebuffer_state = *state;
260 r300->dirty_state |= R300_NEW_FRAMEBUFFERS;
263 /* Create fragment shader state. */
264 static void* r300_create_fs_state(struct pipe_context* pipe,
265 const struct pipe_shader_state* shader)
267 struct r300_context* r300 = r300_context(pipe);
268 struct r3xx_fragment_shader* fs = NULL;
270 if (r300_screen(r300->context.screen)->caps->is_r500) {
272 (struct r3xx_fragment_shader*)CALLOC_STRUCT(r500_fragment_shader);
275 (struct r3xx_fragment_shader*)CALLOC_STRUCT(r300_fragment_shader);
278 /* Copy state directly into shader. */
281 tgsi_scan_shader(shader->tokens, &fs->info);
286 /* Bind fragment shader state. */
287 static void r300_bind_fs_state(struct pipe_context* pipe, void* shader)
289 struct r300_context* r300 = r300_context(pipe);
290 struct r3xx_fragment_shader* fs = (struct r3xx_fragment_shader*)shader;
295 } else if (!fs->translated) {
296 if (r300_screen(r300->context.screen)->caps->is_r500) {
297 r500_translate_fragment_shader(r300, (struct r500_fragment_shader*)fs);
299 r300_translate_fragment_shader(r300, (struct r300_fragment_shader*)fs);
303 fs->translated = TRUE;
306 r300->dirty_state |= R300_NEW_FRAGMENT_SHADER;
309 /* Delete fragment shader state. */
310 static void r300_delete_fs_state(struct pipe_context* pipe, void* shader)
315 static void r300_set_polygon_stipple(struct pipe_context* pipe,
316 const struct pipe_poly_stipple* state)
321 static INLINE int pack_float_16_6x(float f) {
322 return ((int)(f * 6.0) & 0xffff);
325 /* Create a new rasterizer state based on the CSO rasterizer state.
327 * This is a very large chunk of state, and covers most of the graphics
328 * backend (GB), geometry assembly (GA), and setup unit (SU) blocks.
330 * In a not entirely unironic sidenote, this state has nearly nothing to do
331 * with the actual block on the Radeon called the rasterizer (RS). */
332 static void* r300_create_rs_state(struct pipe_context* pipe,
333 const struct pipe_rasterizer_state* state)
335 struct r300_rs_state* rs = CALLOC_STRUCT(r300_rs_state);
337 /* XXX this is part of HW TCL */
338 /* XXX endian control */
339 rs->vap_control_status = R300_VAP_TCL_BYPASS;
341 rs->point_size = pack_float_16_6x(state->point_size) |
342 (pack_float_16_6x(state->point_size) << R300_POINTSIZE_X_SHIFT);
344 rs->line_control = pack_float_16_6x(state->line_width) |
345 R300_GA_LINE_CNTL_END_TYPE_COMP;
347 /* Radeons don't think in "CW/CCW", they think in "front/back". */
348 if (state->front_winding == PIPE_WINDING_CW) {
349 rs->cull_mode = R300_FRONT_FACE_CW;
351 if (state->offset_cw) {
352 rs->polygon_offset_enable |= R300_FRONT_ENABLE;
354 if (state->offset_ccw) {
355 rs->polygon_offset_enable |= R300_BACK_ENABLE;
358 rs->cull_mode = R300_FRONT_FACE_CCW;
360 if (state->offset_ccw) {
361 rs->polygon_offset_enable |= R300_FRONT_ENABLE;
363 if (state->offset_cw) {
364 rs->polygon_offset_enable |= R300_BACK_ENABLE;
367 if (state->front_winding & state->cull_mode) {
368 rs->cull_mode |= R300_CULL_FRONT;
370 if (~(state->front_winding) & state->cull_mode) {
371 rs->cull_mode |= R300_CULL_BACK;
374 if (rs->polygon_offset_enable) {
375 rs->depth_offset_front = rs->depth_offset_back =
376 fui(state->offset_units);
377 rs->depth_scale_front = rs->depth_scale_back =
378 fui(state->offset_scale);
381 if (state->line_stipple_enable) {
382 rs->line_stipple_config =
383 R300_GA_LINE_STIPPLE_CONFIG_LINE_RESET_LINE |
384 (fui((float)state->line_stipple_factor) &
385 R300_GA_LINE_STIPPLE_CONFIG_STIPPLE_SCALE_MASK);
386 /* XXX this might need to be scaled up */
387 rs->line_stipple_value = state->line_stipple_pattern;
395 /* Bind rasterizer state. */
396 static void r300_bind_rs_state(struct pipe_context* pipe, void* state)
398 struct r300_context* r300 = r300_context(pipe);
399 struct r300_rs_state* rs = (struct r300_rs_state*)state;
401 draw_set_rasterizer_state(r300->draw, &rs->rs);
404 r300->dirty_state |= R300_NEW_RASTERIZER;
407 /* Free rasterizer state. */
408 static void r300_delete_rs_state(struct pipe_context* pipe, void* state)
414 r300_create_sampler_state(struct pipe_context* pipe,
415 const struct pipe_sampler_state* state)
417 struct r300_context* r300 = r300_context(pipe);
418 struct r300_sampler_state* sampler = CALLOC_STRUCT(r300_sampler_state);
422 (r300_translate_wrap(state->wrap_s) << R300_TX_WRAP_S_SHIFT) |
423 (r300_translate_wrap(state->wrap_t) << R300_TX_WRAP_T_SHIFT) |
424 (r300_translate_wrap(state->wrap_r) << R300_TX_WRAP_R_SHIFT);
426 sampler->filter0 |= r300_translate_tex_filters(state->min_img_filter,
427 state->mag_img_filter,
428 state->min_mip_filter);
430 lod_bias = CLAMP((int)(state->lod_bias * 32), -(1 << 9), (1 << 9) - 1);
432 sampler->filter1 |= lod_bias << R300_LOD_BIAS_SHIFT;
434 sampler->filter1 |= r300_anisotropy(state->max_anisotropy);
436 util_pack_color(state->border_color, PIPE_FORMAT_A8R8G8B8_UNORM,
437 &sampler->border_color);
439 /* R500-specific fixups and optimizations */
440 if (r300_screen(r300->context.screen)->caps->is_r500) {
441 sampler->filter1 |= R500_BORDER_FIX;
444 return (void*)sampler;
447 static void r300_bind_sampler_states(struct pipe_context* pipe,
451 struct r300_context* r300 = r300_context(pipe);
458 for (i = 0; i < count; i++) {
459 if (r300->sampler_states[i] != states[i]) {
460 r300->sampler_states[i] = (struct r300_sampler_state*)states[i];
461 r300->dirty_state |= (R300_NEW_SAMPLER << i);
465 r300->sampler_count = count;
468 static void r300_delete_sampler_state(struct pipe_context* pipe, void* state)
473 static void r300_set_sampler_textures(struct pipe_context* pipe,
475 struct pipe_texture** texture)
477 struct r300_context* r300 = r300_context(pipe);
485 for (i = 0; i < count; i++) {
486 if (r300->textures[i] != (struct r300_texture*)texture[i]) {
487 pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
489 r300->dirty_state |= (R300_NEW_TEXTURE << i);
493 for (i = count; i < 8; i++) {
494 if (r300->textures[i]) {
495 pipe_texture_reference((struct pipe_texture**)&r300->textures[i],
497 r300->dirty_state |= (R300_NEW_TEXTURE << i);
501 r300->texture_count = count;
504 static void r300_set_scissor_state(struct pipe_context* pipe,
505 const struct pipe_scissor_state* state)
507 struct r300_context* r300 = r300_context(pipe);
508 draw_flush(r300->draw);
510 r300->scissor_state->scissor_top_left =
511 (state->minx << R300_SCISSORS_X_SHIFT) |
512 (state->miny << R300_SCISSORS_Y_SHIFT);
513 r300->scissor_state->scissor_bottom_right =
514 (state->maxx << R300_SCISSORS_X_SHIFT) |
515 (state->maxy << R300_SCISSORS_Y_SHIFT);
517 r300->dirty_state |= R300_NEW_SCISSOR;
520 static void r300_set_viewport_state(struct pipe_context* pipe,
521 const struct pipe_viewport_state* state)
523 struct r300_context* r300 = r300_context(pipe);
524 /* XXX handing this off to Draw for now */
525 draw_set_viewport_state(r300->draw, state);
528 static void r300_set_vertex_buffers(struct pipe_context* pipe,
530 const struct pipe_vertex_buffer* buffers)
532 struct r300_context* r300 = r300_context(pipe);
534 memcpy(r300->vertex_buffers, buffers,
535 sizeof(struct pipe_vertex_buffer) * count);
537 r300->vertex_buffer_count = count;
539 draw_flush(r300->draw);
540 draw_set_vertex_buffers(r300->draw, count, buffers);
543 static void r300_set_vertex_elements(struct pipe_context* pipe,
545 const struct pipe_vertex_element* elements)
547 struct r300_context* r300 = r300_context(pipe);
549 draw_flush(r300->draw);
550 draw_set_vertex_elements(r300->draw, count, elements);
553 static void* r300_create_vs_state(struct pipe_context* pipe,
554 const struct pipe_shader_state* state)
556 struct r300_context* context = r300_context(pipe);
557 /* XXX handing this off to Draw for now */
558 return draw_create_vertex_shader(context->draw, state);
561 static void r300_bind_vs_state(struct pipe_context* pipe, void* state) {
562 struct r300_context* context = r300_context(pipe);
563 /* XXX handing this off to Draw for now */
564 draw_bind_vertex_shader(context->draw, (struct draw_vertex_shader*)state);
567 static void r300_delete_vs_state(struct pipe_context* pipe, void* state)
569 struct r300_context* context = r300_context(pipe);
570 /* XXX handing this off to Draw for now */
571 draw_delete_vertex_shader(context->draw, (struct draw_vertex_shader*)state);
574 void r300_init_state_functions(struct r300_context* r300)
576 r300->context.create_blend_state = r300_create_blend_state;
577 r300->context.bind_blend_state = r300_bind_blend_state;
578 r300->context.delete_blend_state = r300_delete_blend_state;
580 r300->context.set_blend_color = r300_set_blend_color;
582 r300->context.set_clip_state = r300_set_clip_state;
584 r300->context.set_constant_buffer = r300_set_constant_buffer;
586 r300->context.create_depth_stencil_alpha_state = r300_create_dsa_state;
587 r300->context.bind_depth_stencil_alpha_state = r300_bind_dsa_state;
588 r300->context.delete_depth_stencil_alpha_state = r300_delete_dsa_state;
590 r300->context.set_edgeflags = r300_set_edgeflags;
592 r300->context.set_framebuffer_state = r300_set_framebuffer_state;
594 r300->context.create_fs_state = r300_create_fs_state;
595 r300->context.bind_fs_state = r300_bind_fs_state;
596 r300->context.delete_fs_state = r300_delete_fs_state;
598 r300->context.set_polygon_stipple = r300_set_polygon_stipple;
600 r300->context.create_rasterizer_state = r300_create_rs_state;
601 r300->context.bind_rasterizer_state = r300_bind_rs_state;
602 r300->context.delete_rasterizer_state = r300_delete_rs_state;
604 r300->context.create_sampler_state = r300_create_sampler_state;
605 r300->context.bind_sampler_states = r300_bind_sampler_states;
606 r300->context.delete_sampler_state = r300_delete_sampler_state;
608 r300->context.set_sampler_textures = r300_set_sampler_textures;
610 r300->context.set_scissor_state = r300_set_scissor_state;
612 r300->context.set_viewport_state = r300_set_viewport_state;
614 r300->context.set_vertex_buffers = r300_set_vertex_buffers;
615 r300->context.set_vertex_elements = r300_set_vertex_elements;
617 r300->context.create_vs_state = r300_create_vs_state;
618 r300->context.bind_vs_state = r300_bind_vs_state;
619 r300->context.delete_vs_state = r300_delete_vs_state;