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 "util/u_memory.h"
  26 #include "util/u_simple_list.h"
  27
  28 #include "r300_blit.h"
  29 #include "r300_context.h"
  30 #include "r300_emit.h"
  31 #include "r300_flush.h"
  32 #include "r300_query.h"
  33 #include "r300_render.h"
  34 #include "r300_screen.h"
  35 #include "r300_state_invariant.h"
  36 #include "r300_texture.h"
  37 #include "r300_winsys.h"
  38
  39 static void r300_destroy_context(struct pipe_context* context)
  40 {
  41     struct r300_context* r300 = r300_context(context);
  42     struct r300_query* query, * temp;
  43
  44     util_blitter_destroy(r300->blitter);
  45     draw_destroy(r300->draw);
  46
  47     /* Free the OQ BO. */
  48     context->screen->buffer_destroy(r300->oqbo);
  49
  50     /* If there are any queries pending or not destroyed, remove them now. */
  51     foreach_s(query, temp, &r300->query_list) {
  52         remove_from_list(query);
  53         FREE(query);
  54     }
  55
  56     FREE(r300->blend_color_state.state);
  57     FREE(r300->clip_state.state);
  58     FREE(r300->rs_block_state.state);
  59     FREE(r300->scissor_state.state);
  60     FREE(r300->vertex_format_state.state);
  61     FREE(r300->viewport_state.state);
  62     FREE(r300->ztop_state.state);
  63     FREE(r300);
  64 }
  65
  66 static unsigned int
  67 r300_is_texture_referenced(struct pipe_context *pipe,
  68                            struct pipe_texture *texture,
  69                            unsigned face, unsigned level)
  70 {
  71     struct pipe_buffer* buf = 0;
  72
  73     r300_get_texture_buffer(pipe->screen, texture, &buf, NULL);
  74
  75     return pipe->is_buffer_referenced(pipe, buf);
  76 }
  77
  78 static unsigned int
  79 r300_is_buffer_referenced(struct pipe_context *pipe,
  80                           struct pipe_buffer *buf)
  81 {
  82     /* This only checks to see whether actual hardware buffers are
  83      * referenced. Since we use managed BOs and transfers, it's actually not
  84      * possible for pipe_buffers to ever reference the actual hardware, so
  85      * buffers are never referenced. */
  86     return 0;
  87 }
  88
  89 static void r300_flush_cb(void *data)
  90 {
  91     struct r300_context* const cs_context_copy = data;
  92
  93     cs_context_copy->context.flush(&cs_context_copy->context, 0, NULL);
  94 }
  95
  96 #define R300_INIT_ATOM(atomname, atomsize) \
  97     r300->atomname##_state.name = #atomname; \
  98     r300->atomname##_state.state = NULL; \
  99     r300->atomname##_state.size = atomsize; \
 100     r300->atomname##_state.emit = r300_emit_##atomname##_state; \
 101     r300->atomname##_state.dirty = FALSE; \
 102     insert_at_tail(&r300->atom_list, &r300->atomname##_state);
 103
 104 static void r300_setup_atoms(struct r300_context* r300)
 105 {
 106     /* Create the actual atom list.
 107      *
 108      * Each atom is examined and emitted in the order it appears here, which
 109      * can affect performance and conformance if not handled with care.
 110      *
 111      * Some atoms never change size, others change every emit. This is just
 112      * an upper bound on each atom, to keep the emission machinery from
 113      * underallocating space. */
 114     make_empty_list(&r300->atom_list);
 115     R300_INIT_ATOM(invariant, 71);
 116     R300_INIT_ATOM(ztop, 2);
 117     R300_INIT_ATOM(blend, 8);
 118     R300_INIT_ATOM(blend_color, 3);
 119     R300_INIT_ATOM(clip, 29);
 120     R300_INIT_ATOM(dsa, 8);
 121     R300_INIT_ATOM(rs, 25);
 122     R300_INIT_ATOM(scissor, 3);
 123     R300_INIT_ATOM(viewport, 9);
 124     R300_INIT_ATOM(rs_block, 21);
 125     R300_INIT_ATOM(vertex_format, 26);
 126 }
 127
 128 struct pipe_context* r300_create_context(struct pipe_screen* screen,
 129                                          struct radeon_winsys* radeon_winsys)
 130 {
 131     struct r300_context* r300 = CALLOC_STRUCT(r300_context);
 132     struct r300_screen* r300screen = r300_screen(screen);
 133
 134     if (!r300)
 135         return NULL;
 136
 137     r300->winsys = radeon_winsys;
 138
 139     r300->context.winsys = (struct pipe_winsys*)radeon_winsys;
 140     r300->context.screen = screen;
 141
 142     r300->context.destroy = r300_destroy_context;
 143
 144     r300->context.clear = r300_clear;
 145     r300->context.surface_copy = r300_surface_copy;
 146     r300->context.surface_fill = r300_surface_fill;
 147
 148     if (r300screen->caps->has_tcl) {
 149         r300->context.draw_arrays = r300_draw_arrays;
 150         r300->context.draw_elements = r300_draw_elements;
 151         r300->context.draw_range_elements = r300_draw_range_elements;
 152     } else {
 153         r300->context.draw_arrays = r300_swtcl_draw_arrays;
 154         r300->context.draw_elements = r300_draw_elements;
 155         r300->context.draw_range_elements = r300_swtcl_draw_range_elements;
 156
 157         /* Create a Draw. This is used for SW TCL. */
 158         r300->draw = draw_create();
 159         /* Enable our renderer. */
 160         draw_set_rasterize_stage(r300->draw, r300_draw_stage(r300));
 161         /* Enable Draw's clipping. */
 162         draw_set_driver_clipping(r300->draw, FALSE);
 163         /* Force Draw to never do viewport transform, since we can do
 164          * transform in hardware, always. */
 165         draw_set_viewport_state(r300->draw, &r300_viewport_identity);
 166     }
 167
 168     r300->context.is_texture_referenced = r300_is_texture_referenced;
 169     r300->context.is_buffer_referenced = r300_is_buffer_referenced;
 170
 171     r300_setup_atoms(r300);
 172
 173     r300->blend_color_state.state = CALLOC_STRUCT(r300_blend_color_state);
 174     r300->clip_state.state = CALLOC_STRUCT(pipe_clip_state);
 175     r300->rs_block_state.state = CALLOC_STRUCT(r300_rs_block);
 176     r300->scissor_state.state = CALLOC_STRUCT(pipe_scissor_state);
 177     r300->vertex_format_state.state = CALLOC_STRUCT(r300_vertex_info);
 178     r300->viewport_state.state = CALLOC_STRUCT(r300_viewport_state);
 179     r300->ztop_state.state = CALLOC_STRUCT(r300_ztop_state);
 180
 181     /* Open up the OQ BO. */
 182     r300->oqbo = screen->buffer_create(screen, 4096,
 183             PIPE_BUFFER_USAGE_VERTEX, 4096);
 184     make_empty_list(&r300->query_list);
 185
 186     r300_init_flush_functions(r300);
 187
 188     r300_init_query_functions(r300);
 189
 190     /* r300_init_surface_functions(r300); */
 191
 192     r300_init_state_functions(r300);
 193
 194     r300->invariant_state.dirty = TRUE;
 195
 196     r300->winsys->set_flush_cb(r300->winsys, r300_flush_cb, r300);
 197     r300->dirty_state = R300_NEW_KITCHEN_SINK;
 198     r300->dirty_hw++;
 199
 200     r300->blitter = util_blitter_create(&r300->context);
 201
 202     return &r300->context;
 203 }