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_texture.h"
  40 #include "r300_winsys.h"
  41
  42 static enum pipe_error r300_clear_hash_table(void* key, void* value,
  43                                              void* data)
  44 {
  45     FREE(key);
  46     FREE(value);
  47     return PIPE_OK;
  48 }
  49
  50 static void r300_destroy_context(struct pipe_context* context)
  51 {
  52     struct r300_context* r300 = r300_context(context);
  53     struct r300_query* query, * temp;
  54
  55     util_hash_table_foreach(r300->shader_hash_table, r300_clear_hash_table,
  56         NULL);
  57     util_hash_table_destroy(r300->shader_hash_table);
  58
  59     draw_destroy(r300->draw);
  60
  61     /* Free the OQ BO. */
  62     context->screen->buffer_destroy(r300->oqbo);
  63
  64     /* If there are any queries pending or not destroyed, remove them now. */
  65     foreach_s(query, temp, &r300->query_list) {
  66         remove_from_list(query);
  67         FREE(query);
  68     }
  69
  70     FREE(r300->blend_color_state);
  71     FREE(r300->rs_block);
  72     FREE(r300->scissor_state);
  73     FREE(r300->vertex_info);
  74     FREE(r300->viewport_state);
  75     FREE(r300);
  76 }
  77
  78 static unsigned int
  79 r300_is_texture_referenced(struct pipe_context *pipe,
  80                            struct pipe_texture *texture,
  81                            unsigned face, unsigned level)
  82 {
  83     struct pipe_buffer* buf = 0;
  84
  85     r300_get_texture_buffer(texture, &buf, NULL);
  86
  87     return pipe->is_buffer_referenced(pipe, buf);
  88 }
  89
  90 static unsigned int
  91 r300_is_buffer_referenced(struct pipe_context *pipe,
  92                           struct pipe_buffer *buf)
  93 {
  94     /* This only checks to see whether actual hardware buffers are
  95      * referenced. Since we use managed BOs and transfers, it's actually not
  96      * possible for pipe_buffers to ever reference the actual hardware, so
  97      * buffers are never referenced. */
  98     return 0;
  99 }
 100
 101 static void r300_flush_cb(void *data)
 102 {
 103     struct r300_context* const cs_context_copy = data;
 104
 105     cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
 106 }
 107
 108 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 109                                          struct radeon_winsys* radeon_winsys)
 110 {
 111     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 112     struct r300_screen* r300screen = r300_screen(screen);
 113
 114     if (!r300)
 115         return NULL;
 116
 117     r300->winsys = radeon_winsys;
 118
 119     r300->context.winsys = (struct pipe_winsys*)radeon_winsys;
 120     r300->context.screen = screen;
 121
 122     r300_init_debug(r300);
 123
 124     r300->context.destroy = r300_destroy_context;
 125
 126     r300->context.clear = r300_clear;
 127
 128     if (r300screen->caps->has_tcl) {
 129         r300->context.draw_arrays = r300_draw_arrays;
 130         r300->context.draw_elements = r300_draw_elements;
 131         r300->context.draw_range_elements = r300_draw_range_elements;
 132     } else {
 133         r300->context.draw_arrays = r300_swtcl_draw_arrays;
 134         r300->context.draw_elements = r300_draw_elements;
 135         r300->context.draw_range_elements = r300_swtcl_draw_range_elements;
 136
 137         /* Create a Draw. This is used for SW TCL. */
 138         r300->draw = draw_create();
 139         /* Enable our renderer. */
 140         draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 141         /* Enable Draw's clipping. */
 142         draw_set_driver_clipping(r300->draw, FALSE);
 143         /* Force Draw to never do viewport transform, since we can do
 144          * transform in hardware, always. */
 145         draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 146     }
 147
 148     r300->context.is_texture_referenced = r300_is_texture_referenced;
 149     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 150
 151     r300->shader_hash_table = util_hash_table_create(r300_shader_key_hash,
 152         r300_shader_key_compare);
 153
 154     r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
 155     r300->rs_block = CALLOC_STRUCT(r300_rs_block);
 156     r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
 157     r300->vertex_info = CALLOC_STRUCT(r300_vertex_info);
 158     r300->viewport_state = CALLOC_STRUCT(r300_viewport_state);
 159
 160     /* Open up the OQ BO. */
 161     r300->oqbo = screen->buffer_create(screen, 4096,
 162             PIPE_BUFFER_USAGE_VERTEX, 4096);
 163     make_empty_list(&r300->query_list);
 164
 165     r300_init_flush_functions(r300);
 166
 167     r300_init_query_functions(r300);
 168
 169     /* r300_init_surface_functions(r300); */
 170
 171     r300_init_state_functions(r300);
 172
 173     r300_emit_invariant_state(r300);
 174
 175     r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
 176     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 177     r300->dirty_hw++;
 178     return &r300->context;
 179 }