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