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_clear.h"
  32 #include "r300_context.h"
  33 #include "r300_flush.h"
  34 #include "r300_query.h"
  35 #include "r300_render.h"
  36 #include "r300_screen.h"
  37 #include "r300_state_derived.h"
  38 #include "r300_state_invariant.h"
  39 #include "r300_winsys.h"
  40
  41 static enum pipe_error r300_clear_hash_table(void* key, void* value,
  42                                              void* data)
  43 {
  44     FREE(key);
  45     FREE(value);
  46     return PIPE_OK;
  47 }
  48
  49 static void r300_destroy_context(struct pipe_context* context)
  50 {
  51     struct r300_context* r300 = r300_context(context);
  52     struct r300_query* query, * temp;
  53
  54     util_hash_table_foreach(r300->shader_hash_table, r300_clear_hash_table,
  55         NULL);
  56     util_hash_table_destroy(r300->shader_hash_table);
  57
  58     draw_destroy(r300->draw);
  59
  60     /* Free the OQ BO. */
  61     context->screen->buffer_destroy(r300->oqbo);
  62
  63     /* If there are any queries pending or not destroyed, remove them now. */
  64     foreach_s(query, temp, &r300->query_list) {
  65         remove_from_list(query);
  66         FREE(query);
  67     }
  68
  69     FREE(r300->blend_color_state);
  70     FREE(r300->rs_block);
  71     FREE(r300->scissor_state);
  72     FREE(r300->viewport_state);
  73     FREE(r300);
  74 }
  75
  76 static unsigned int
  77 r300_is_texture_referenced(struct pipe_context *pipe,
  78                            struct pipe_texture *texture,
  79                            unsigned face, unsigned level)
  80 {
  81     struct pipe_buffer* buf = 0;
  82
  83     r300_get_texture_buffer(texture, &buf, NULL);
  84
  85     return pipe->is_buffer_referenced(pipe, buf);
  86 }
  87
  88 static unsigned int
  89 r300_is_buffer_referenced(struct pipe_context *pipe,
  90                           struct pipe_buffer *buf)
  91 {
  92     /* This only checks to see whether actual hardware buffers are
  93      * referenced. Since we use managed BOs and transfers, it's actually not
  94      * possible for pipe_buffers to ever reference the actual hardware, so
  95      * buffers are never referenced. */
  96     return 0;
  97 }
  98
  99 static void r300_flush_cb(void *data)
 100 {
 101     struct r300_context* const cs_context_copy = data;
 102
 103     cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
 104 }
 105
 106 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 107                                          struct r300_winsys* r300_winsys)
 108 {
 109     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 110     struct r300_screen* r300screen = r300_screen(screen);
 111
 112     if (!r300)
 113         return NULL;
 114
 115     r300->winsys = r300_winsys;
 116
 117     r300->context.winsys = (struct pipe_winsys*)r300_winsys;
 118     r300->context.screen = screen;
 119
 120     r300_init_debug(r300);
 121
 122     r300->context.destroy = r300_destroy_context;
 123
 124     r300->context.clear = r300_clear;
 125
 126     if (r300screen->caps->has_tcl)
 127     {
 128         r300->context.draw_arrays = r300_draw_arrays;
 129         r300->context.draw_elements = r300_draw_elements;
 130         r300->context.draw_range_elements = r300_draw_range_elements;
 131     }
 132     else
 133     {
 134         assert(0);
 135     }
 136
 137     r300->context.is_texture_referenced = r300_is_texture_referenced;
 138     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 139
 140     r300->shader_hash_table = util_hash_table_create(r300_shader_key_hash,
 141         r300_shader_key_compare);
 142
 143     r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
 144     r300->rs_block = CALLOC_STRUCT(r300_rs_block);
 145     r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
 146     r300->viewport_state = CALLOC_STRUCT(r300_viewport_state);
 147
 148     /* Create a Draw. This is used for vert collation and SW TCL. */
 149     r300->draw = draw_create();
 150     /* Enable our renderer. */
 151     draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 152     /* Disable Draw's clipping if TCL is present. */
 153     draw_set_driver_clipping(r300->draw, r300_screen(screen)->caps->has_tcl);
 154     /* Force Draw to never do viewport transform, since (again) we can do
 155      * transform in hardware, always. */
 156     draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 157
 158     /* Open up the OQ BO. */
 159     r300->oqbo = screen->buffer_create(screen, 4096,
 160             PIPE_BUFFER_USAGE_VERTEX, 4096);
 161     make_empty_list(&r300->query_list);
 162
 163     r300_init_flush_functions(r300);
 164
 165     r300_init_query_functions(r300);
 166
 167     /* r300_init_surface_functions(r300); */
 168
 169     r300_init_state_functions(r300);
 170
 171     r300_emit_invariant_state(r300);
 172
 173     r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
 174     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 175     r300->dirty_hw++;
 176     return &r300->context;
 177 }