src/gallium/drivers/r300/r300_context.c

   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 "draw/draw_context.h"
  24
  25 #include "tgsi/tgsi_scan.h"
  26
  27 #include "util/u_hash_table.h"
  28 #include "util/u_memory.h"
  29 #include "util/u_simple_list.h"
  30
  31 #include "r300_blit.h"
  32 #include "r300_context.h"
  33 #include "r300_emit.h"
  34 #include "r300_flush.h"
  35 #include "r300_query.h"
  36 #include "r300_render.h"
  37 #include "r300_screen.h"
  38 #include "r300_state_derived.h"
  39 #include "r300_state_invariant.h"
  40 #include "r300_texture.h"
  41 #include "r300_winsys.h"
  42
  43 static enum pipe_error r300_clear_hash_table(void* key, void* value,
  44                                              void* data)
  45 {
  46     FREE(key);
  47     FREE(value);
  48     return PIPE_OK;
  49 }
  50
  51 static void r300_destroy_context(struct pipe_context* context)
  52 {
  53     struct r300_context* r300 = r300_context(context);
  54     struct r300_query* query, * temp;
  55
  56     util_blitter_destroy(r300->blitter);
  57
  58     util_hash_table_foreach(r300->shader_hash_table, r300_clear_hash_table,
  59         NULL);
  60     util_hash_table_destroy(r300->shader_hash_table);
  61
  62     draw_destroy(r300->draw);
  63
  64     /* Free the OQ BO. */
  65     context->screen->buffer_destroy(r300->oqbo);
  66
  67     /* If there are any queries pending or not destroyed, remove them now. */
  68     foreach_s(query, temp, &r300->query_list) {
  69         remove_from_list(query);
  70         FREE(query);
  71     }
  72
  73     FREE(r300->blend_color_state.state);
  74     FREE(r300->clip_state.state);
  75     FREE(r300->rs_block);
  76     FREE(r300->scissor_state.state);
  77     FREE(r300->vertex_info);
  78     FREE(r300->viewport_state.state);
  79     FREE(r300->ztop_state.state);
  80     FREE(r300);
  81 }
  82
  83 static unsigned int
  84 r300_is_texture_referenced(struct pipe_context *pipe,
  85                            struct pipe_texture *texture,
  86                            unsigned face, unsigned level)
  87 {
  88     struct pipe_buffer* buf = 0;
  89
  90     r300_get_texture_buffer(pipe->screen, texture, &buf, NULL);
  91
  92     return pipe->is_buffer_referenced(pipe, buf);
  93 }
  94
  95 static unsigned int
  96 r300_is_buffer_referenced(struct pipe_context *pipe,
  97                           struct pipe_buffer *buf)
  98 {
  99     /* This only checks to see whether actual hardware buffers are
 100      * referenced. Since we use managed BOs and transfers, it's actually not
 101      * possible for pipe_buffers to ever reference the actual hardware, so
 102      * buffers are never referenced. */
 103     return 0;
 104 }
 105
 106 static void r300_flush_cb(void *data)
 107 {
 108     struct r300_context* const cs_context_copy = data;
 109
 110     cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
 111 }
 112
 113 #define R300_INIT_ATOM(atomname, atomsize) \
 114     r300->atomname##_state.name = #atomname; \
 115     r300->atomname##_state.state = NULL; \
 116     r300->atomname##_state.size = atomsize; \
 117     r300->atomname##_state.emit = r300_emit_##atomname##_state; \
 118     r300->atomname##_state.dirty = FALSE; \
 119     insert_at_tail(&r300->atom_list, &r300->atomname##_state);
 120
 121 static void r300_setup_atoms(struct r300_context* r300)
 122 {
 123     /* Create the actual atom list.
 124      *
 125      * Each atom is examined and emitted in the order it appears here, which
 126      * can affect performance and conformance if not handled with care.
 127      *
 128      * Some atoms never change size, others change every emit. This is just
 129      * an upper bound on each atom, to keep the emission machinery from
 130      * underallocating space. */
 131     make_empty_list(&r300->atom_list);
 132     R300_INIT_ATOM(invariant, 71);
 133     R300_INIT_ATOM(ztop, 2);
 134     R300_INIT_ATOM(blend, 8);
 135     R300_INIT_ATOM(blend_color, 3);
 136     R300_INIT_ATOM(clip, 29);
 137     R300_INIT_ATOM(dsa, 8);
 138     R300_INIT_ATOM(rs, 25);
 139     R300_INIT_ATOM(scissor, 3);
 140     R300_INIT_ATOM(viewport, 9);
 141 }
 142
 143 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 144                                          struct radeon_winsys* radeon_winsys)
 145 {
 146     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 147     struct r300_screen* r300screen = r300_screen(screen);
 148
 149     if (!r300)
 150         return NULL;
 151
 152     r300->winsys = radeon_winsys;
 153
 154     r300->context.winsys = (struct pipe_winsys*)radeon_winsys;
 155     r300->context.screen = screen;
 156
 157     r300->context.destroy = r300_destroy_context;
 158
 159     r300->context.clear = r300_clear;
 160     r300->context.surface_copy = r300_surface_copy;
 161     r300->context.surface_fill = r300_surface_fill;
 162
 163     if (r300screen->caps->has_tcl) {
 164         r300->context.draw_arrays = r300_draw_arrays;
 165         r300->context.draw_elements = r300_draw_elements;
 166         r300->context.draw_range_elements = r300_draw_range_elements;
 167     } else {
 168         r300->context.draw_arrays = r300_swtcl_draw_arrays;
 169         r300->context.draw_elements = r300_draw_elements;
 170         r300->context.draw_range_elements = r300_swtcl_draw_range_elements;
 171
 172         /* Create a Draw. This is used for SW TCL. */
 173         r300->draw = draw_create();
 174         /* Enable our renderer. */
 175         draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 176         /* Enable Draw's clipping. */
 177         draw_set_driver_clipping(r300->draw, FALSE);
 178         /* Force Draw to never do viewport transform, since we can do
 179          * transform in hardware, always. */
 180         draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 181     }
 182
 183     r300->context.is_texture_referenced = r300_is_texture_referenced;
 184     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 185
 186     r300->shader_hash_table = util_hash_table_create(r300_shader_key_hash,
 187         r300_shader_key_compare);
 188
 189     r300_setup_atoms(r300);
 190
 191     r300->blend_color_state.state = CALLOC_STRUCT(r300_blend_color_state);
 192     r300->clip_state.state = CALLOC_STRUCT(pipe_clip_state);
 193     r300->rs_block = CALLOC_STRUCT(r300_rs_block);
 194     r300->scissor_state.state = CALLOC_STRUCT(pipe_scissor_state);
 195     r300->vertex_info = CALLOC_STRUCT(r300_vertex_info);
 196     r300->viewport_state.state = CALLOC_STRUCT(r300_viewport_state);
 197     r300->ztop_state.state = CALLOC_STRUCT(r300_ztop_state);
 198
 199     /* Open up the OQ BO. */
 200     r300->oqbo = screen->buffer_create(screen, 4096,
 201             PIPE_BUFFER_USAGE_VERTEX, 4096);
 202     make_empty_list(&r300->query_list);
 203
 204     r300_init_flush_functions(r300);
 205
 206     r300_init_query_functions(r300);
 207
 208     /* r300_init_surface_functions(r300); */
 209
 210     r300_init_state_functions(r300);
 211
 212     r300->invariant_state.dirty = TRUE;
 213
 214     r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
 215     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 216     r300->dirty_hw++;
 217
 218     r300->blitter = util_blitter_create(&r300->context);
 219
 220     return &r300->context;
 221 }