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 "r300_context.h"
  24
  25 #include "r300_flush.h"
  26 #include "r300_state_invariant.h"
  27
  28 static boolean r300_draw_range_elements(struct pipe_context* pipe,
  29                                         struct pipe_buffer* indexBuffer,
  30                                         unsigned indexSize,
  31                                         unsigned minIndex,
  32                                         unsigned maxIndex,
  33                                         unsigned mode,
  34                                         unsigned start,
  35                                         unsigned count)
  36 {
  37     struct r300_context* r300 = r300_context(pipe);
  38     int i;
  39
  40     for (i = 0; i < r300->vertex_buffer_count; i++) {
  41         void* buf = pipe_buffer_map(pipe->screen,
  42                                     r300->vertex_buffers[i].buffer,
  43                                     PIPE_BUFFER_USAGE_CPU_READ);
  44         draw_set_mapped_vertex_buffer(r300->draw, i, buf);
  45     }
  46
  47     if (indexBuffer) {
  48         void* indices = pipe_buffer_map(pipe->screen, indexBuffer,
  49                                         PIPE_BUFFER_USAGE_CPU_READ);
  50         draw_set_mapped_element_buffer_range(r300->draw, indexSize,
  51                                              minIndex, maxIndex, indices);
  52     } else {
  53         draw_set_mapped_element_buffer(r300->draw, 0, NULL);
  54     }
  55
  56     draw_set_mapped_constant_buffer(r300->draw,
  57             r300->shader_constants[PIPE_SHADER_VERTEX].constants,
  58             r300->shader_constants[PIPE_SHADER_VERTEX].count *
  59                 (sizeof(float) * 4));
  60
  61     draw_arrays(r300->draw, mode, start, count);
  62
  63     for (i = 0; i < r300->vertex_buffer_count; i++) {
  64         pipe_buffer_unmap(pipe->screen, r300->vertex_buffers[i].buffer);
  65         draw_set_mapped_vertex_buffer(r300->draw, i, NULL);
  66     }
  67
  68     if (indexBuffer) {
  69         pipe_buffer_unmap(pipe->screen, indexBuffer);
  70         draw_set_mapped_element_buffer_range(r300->draw, 0, start,
  71                                              start + count - 1, NULL);
  72     }
  73
  74     return TRUE;
  75 }
  76
  77 static boolean r300_draw_elements(struct pipe_context* pipe,
  78                                   struct pipe_buffer* indexBuffer,
  79                                   unsigned indexSize, unsigned mode,
  80                                   unsigned start, unsigned count)
  81 {
  82     return r300_draw_range_elements(pipe, indexBuffer, indexSize, 0, ~0,
  83                                     mode, start, count);
  84 }
  85
  86 static boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
  87                                 unsigned start, unsigned count)
  88 {
  89     return r300_draw_elements(pipe, NULL, 0, mode, start, count);
  90 }
  91
  92 static void r300_destroy_context(struct pipe_context* context) {
  93     struct r300_context* r300 = r300_context(context);
  94     struct r300_query* query, * temp;
  95
  96     draw_destroy(r300->draw);
  97
  98     /* Free the OQ BO. */
  99     context->screen->buffer_destroy(r300->oqbo);
 100
 101     /* If there are any queries pending or not destroyed, remove them now. */
 102     if (r300->query_list) {
 103         foreach_s(query, temp, r300->query_list) {
 104             remove_from_list(query);
 105             FREE(query);
 106         }
 107     }
 108
 109     FREE(r300->blend_color_state);
 110     FREE(r300->rs_block);
 111     FREE(r300->scissor_state);
 112     FREE(r300->viewport_state);
 113     FREE(r300);
 114 }
 115
 116 static unsigned int
 117 r300_is_texture_referenced( struct pipe_context *pipe,
 118                             struct pipe_texture *texture,
 119                             unsigned face, unsigned level)
 120 {
 121    /**
 122     * FIXME: Optimize.
 123     */
 124
 125    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 126 }
 127
 128 static unsigned int
 129 r300_is_buffer_referenced( struct pipe_context *pipe,
 130                            struct pipe_buffer *buf)
 131 {
 132    /**
 133     * FIXME: Optimize.
 134     */
 135
 136    return PIPE_REFERENCED_FOR_READ | PIPE_REFERENCED_FOR_WRITE;
 137 }
 138
 139 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 140                                          struct r300_winsys* r300_winsys)
 141 {
 142     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 143
 144     if (!r300)
 145         return NULL;
 146
 147     r300->winsys = r300_winsys;
 148
 149     r300->context.winsys = (struct pipe_winsys*)r300_winsys;
 150     r300->context.screen = r300_screen(screen);
 151
 152     r300_init_debug(r300);
 153
 154     r300->context.destroy = r300_destroy_context;
 155
 156     r300->context.clear = r300_clear;
 157
 158     r300->context.draw_arrays = r300_draw_arrays;
 159     r300->context.draw_elements = r300_draw_elements;
 160     r300->context.draw_range_elements = r300_draw_range_elements;
 161
 162     r300->context.is_texture_referenced = r300_is_texture_referenced;
 163     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 164
 165     r300->blend_color_state = CALLOC_STRUCT(r300_blend_color_state);
 166     r300->rs_block = CALLOC_STRUCT(r300_rs_block);
 167     r300->scissor_state = CALLOC_STRUCT(r300_scissor_state);
 168     r300->viewport_state = CALLOC_STRUCT(r300_viewport_state);
 169
 170     /* Create a Draw. This is used for vert collation and SW TCL. */
 171     r300->draw = draw_create();
 172     /* Enable our renderer. */
 173     draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 174     /* Disable Draw's clipping if TCL is present. */
 175     draw_set_driver_clipping(r300->draw, r300_screen(screen)->caps->has_tcl);
 176     /* Force Draw to never do viewport transform, since (again) we can do
 177      * transform in hardware, always. */
 178     draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 179
 180     /* Open up the OQ BO. */
 181     r300->oqbo = screen->buffer_create(screen, 4096,
 182             PIPE_BUFFER_USAGE_VERTEX, 4096);
 183
 184     r300_init_flush_functions(r300);
 185
 186     r300_init_query_functions(r300);
 187
 188     r300_init_surface_functions(r300);
 189
 190     r300_init_state_functions(r300);
 191
 192     r300_emit_invariant_state(r300);
 193     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 194     r300->dirty_hw++;
 195
 196     return &r300->context;
 197 }