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 "pipe/p_inlines.h"
  26
  27 #include "tgsi/tgsi_scan.h"
  28
  29 #include "util/u_hash_table.h"
  30 #include "util/u_memory.h"
  31 #include "util/u_simple_list.h"
  32
  33 #include "r300_clear.h"
  34 #include "r300_context.h"
  35 #include "r300_flush.h"
  36 #include "r300_query.h"
  37 #include "r300_screen.h"
  38 #include "r300_state_derived.h"
  39 #include "r300_state_invariant.h"
  40 #include "r300_winsys.h"
  41
  42 static boolean r300_draw_range_elements(struct pipe_context* pipe,
  43                                         struct pipe_buffer* indexBuffer,
  44                                         unsigned indexSize,
  45                                         unsigned minIndex,
  46                                         unsigned maxIndex,
  47                                         unsigned mode,
  48                                         unsigned start,
  49                                         unsigned count)
  50 {
  51     struct r300_context* r300 = r300_context(pipe);
  52     int i;
  53
  54     for (i = 0; i < r300->vertex_buffer_count; i++) {
  55         void* buf = pipe_buffer_map(pipe->screen,
  56                                     r300->vertex_buffers[i].buffer,
  57                                     PIPE_BUFFER_USAGE_CPU_READ);
  58         draw_set_mapped_vertex_buffer(r300->draw, i, buf);
  59     }
  60
  61     if (indexBuffer) {
  62         void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
  63                                         PIPE_BUFFER_USAGE_CPU_READ);
  64         draw_set_mapped_element_buffer_range(r300->draw, indexSize,
  65                                              minIndex, maxIndex, indices);
  66     } else {
  67         draw_set_mapped_element_buffer(r300->draw, 0, NULL);
  68     }
  69
  70     draw_set_mapped_constant_buffer(r300->draw,
  71             r300->shader_constants[PIPE_SHADER_VERTEX].constants,
  72             r300->shader_constants[PIPE_SHADER_VERTEX].count *
  73                 (sizeof(float) * 4));
  74
  75     draw_arrays(r300->draw, mode, start, count);
  76
  77     for (i = 0; i < r300->vertex_buffer_count; i++) {
  78         pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
  79         draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
  80     }
  81
  82     if (indexBuffer) {
  83         pipe_buffer_unmap(pipe->screen, indexBuffer);
  84         draw_set_mapped_element_buffer_range(r300->draw, 0, start,
  85                                              start + count - 1, NULL);
  86     }
  87
  88     return TRUE;
  89 }
  90
  91 static boolean r300_draw_elements(struct pipe_context* pipe,
  92                                   struct pipe_buffer* indexBuffer,
  93                                   unsigned indexSize, unsigned mode,
  94                                   unsigned start, unsigned count)
  95 {
  96     return r300_draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
  97                                     mode, start, count);
  98 }
  99
 100 static boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
 101                                 unsigned start, unsigned count)
 102 {
 103     return r300_draw_elements(pipe, NULL, 0, mode, start, count);
 104 }
 105
 106 static enum pipe_error r300_clear_hash_table(void* key, void* value,
 107                                              void* data)
 108 {
 109     FREE(key);
 110     FREE(value);
 111     return PIPE_OK;
 112 }
 113
 114 static void r300_destroy_context(struct pipe_context* context)
 115 {
 116     struct r300_context* r300 = r300_context(context);
 117     struct r300_query* query, * temp;
 118
 119     util_hash_table_foreach(r300->shader_hash_table, r300_clear_hash_table,
 120         NULL);
 121     util_hash_table_destroy(r300->shader_hash_table);
 122
 123     draw_destroy(r300->draw);
 124
 125     /* Free the OQ BO. */
 126     context->screen->buffer_destroy(r300->oqbo);
 127
 128     /* If there are any queries pending or not destroyed, remove them now. */
 129     foreach_s(query, temp, &r300->query_list) {
 130         remove_from_list(query);
 131         FREE(query);
 132     }
 133
 134     FREE(r300->blend_color_state);
 135     FREE(r300->rs_block);
 136     FREE(r300->scissor_state);
 137     FREE(r300->viewport_state);
 138     FREE(r300);
 139 }
 140
 141 static unsigned int
 142 r300_is_texture_referenced( struct pipe_context *pipe,
 143                             struct pipe_texture *texture,
 144                             unsigned face, unsigned level)
 145 {
 146    /**
 147     * FIXME: Optimize.
 148     */
 149
 150    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 151 }
 152
 153 static unsigned int
 154 r300_is_buffer_referenced( struct pipe_context *pipe,
 155                            struct pipe_buffer *buf)
 156 {
 157    /**
 158     * FIXME: Optimize.
 159     */
 160
 161    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 162 }
 163
 164 static void r300_flush_cb(void *data)
 165 {
 166     struct r300_context* const cs_context_copy = data;
 167
 168     cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
 169 }
 170
 171 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 172                                          struct r300_winsys* r300_winsys)
 173 {
 174     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 175
 176     if (!r300)
 177         return NULL;
 178
 179     r300->winsys = r300_winsys;
 180
 181     r300->context.winsys = (struct pipe_winsys*)r300_winsys;
 182     r300->context.screen = screen;
 183
 184     r300_init_debug(r300);
 185
 186     r300->context.destroy = r300_destroy_context;
 187
 188     r300->context.clear = r300_clear;
 189
 190     r300->context.draw_arrays = r300_draw_arrays;
 191     r300->context.draw_elements = r300_draw_elements;
 192     r300->context.draw_range_elements = r300_draw_range_elements;
 193
 194     r300->context.is_texture_referenced = r300_is_texture_referenced;
 195     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 196
 197     r300->shader_hash_table = util_hash_table_create(r300_shader_key_hash,
 198         r300_shader_key_compare);
 199
 200     r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
 201     r300->rs_block = CALLOC_STRUCT(r300_rs_block);
 202     r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
 203     r300->viewport_state = CALLOC_STRUCT(r300_viewport_state);
 204
 205     /* Create a Draw. This is used for vert collation and SW TCL. */
 206     r300->draw = draw_create();
 207     /* Enable our renderer. */
 208     draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 209     /* Disable Draw's clipping if TCL is present. */
 210     draw_set_driver_clipping(r300->draw, r300_screen(screen)->caps->has_tcl);
 211     /* Force Draw to never do viewport transform, since (again) we can do
 212      * transform in hardware, always. */
 213     draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 214
 215     /* Open up the OQ BO. */
 216     r300->oqbo = screen->buffer_create(screen, 4096,
 217             PIPE_BUFFER_USAGE_VERTEX, 4096);
 218
 219     r300_init_flush_functions(r300);
 220
 221     r300_init_query_functions(r300);
 222
 223     /* r300_init_surface_functions(r300); */
 224
 225     r300_init_state_functions(r300);
 226
 227     r300_emit_invariant_state(r300);
 228
 229     r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
 230     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 231     r300->dirty_hw++;
 232     make_empty_list(&r300->query_list);
 233     return &r300->context;
 234 }