src/gallium/drivers/r300/r300_vbo.c

   1 /*
   2  * Copyright 2009 Maciej Cencora <m.cencora@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
  24 /* r300_vbo: Various helpers for emitting vertex buffers. Needs cleanup,
  25  * refactoring, etc. */
  26
  27 #include "r300_vbo.h"
  28
  29 #include "pipe/p_format.h"
  30
  31 #include "r300_cs.h"
  32 #include "r300_context.h"
  33 #include "r300_state_inlines.h"
  34 #include "r300_reg.h"
  35 #include "r300_winsys.h"
  36
  37 static INLINE void setup_vertex_attribute(struct r300_vertex_info *vinfo,
  38                                           struct pipe_vertex_element *vert_elem,
  39                                           unsigned attr_num)
  40 {
  41     uint16_t hw_fmt1, hw_fmt2;
  42
  43     hw_fmt1 = r300_translate_vertex_data_type(vert_elem->src_format) |
  44         (attr_num << R300_DST_VEC_LOC_SHIFT);
  45     hw_fmt2 = r300_translate_vertex_data_swizzle(vert_elem->src_format);
  46
  47     if (attr_num % 2 == 0)
  48     {
  49         vinfo->vap_prog_stream_cntl[attr_num >> 1] = hw_fmt1;
  50         vinfo->vap_prog_stream_cntl_ext[attr_num >> 1] = hw_fmt2;
  51     }
  52     else
  53     {
  54         vinfo->vap_prog_stream_cntl[attr_num >> 1] |= hw_fmt1 << 16;
  55         vinfo->vap_prog_stream_cntl_ext[attr_num >> 1] |= hw_fmt2 << 16;
  56     }
  57 }
  58
  59 static void finish_vertex_attribs_setup(struct r300_vertex_info *vinfo,
  60                                         unsigned attribs_num)
  61 {
  62     uint32_t last_vec_bit = (attribs_num % 2 == 0) ?
  63         (R300_LAST_VEC << 16) : R300_LAST_VEC;
  64
  65     assert(attribs_num > 0 && attribs_num <= 16);
  66     vinfo->vap_prog_stream_cntl[(attribs_num - 1) >> 1] |= last_vec_bit;
  67 }
  68
  69 void setup_vertex_attributes(struct r300_context *r300)
  70 {
  71     struct pipe_vertex_element *vert_elem;
  72     int i;
  73
  74     for (i = 0; i < r300->vertex_element_count; i++) {
  75         vert_elem = &r300->vertex_element[i];
  76         setup_vertex_attribute(r300->vertex_info, vert_elem, i);
  77     }
  78
  79     finish_vertex_attribs_setup(r300->vertex_info,
  80         r300->vertex_element_count);
  81 }
  82
  83 static INLINE int get_buffer_offset(struct r300_context *r300,
  84                                     unsigned int buf_nr,
  85                                     unsigned int elem_offset)
  86 {
  87     return r300->vertex_buffer[buf_nr].buffer_offset + elem_offset;
  88 }
  89 #if 0
  90 /* XXX not called at all */
  91 static void setup_vertex_buffers(struct r300_context *r300)
  92 {
  93     struct pipe_vertex_element *vert_elem;
  94     int i;
  95
  96     for (i = 0; i < r300->aos_count; i++)
  97     {
  98         vert_elem = &r300->vertex_element[i];
  99             /* XXX use translate module to convert the data */
 100         if (!format_is_supported(vert_elem->src_format,
 101                                  vert_elem->nr_components)) {
 102             assert(0);
 103             /*
 104             struct pipe_buffer *buf;
 105             const unsigned int max_index = r300->vertex_buffers[vert_elem->vertex_buffer_index].max_index;
 106             buf = pipe_buffer_create(r300->context.screen, 4, usage, vert_elem->nr_components * max_index * sizeof(float));
 107             */
 108         }
 109
 110         if (get_buffer_offset(r300,
 111                               vert_elem->vertex_buffer_index,
 112                               vert_elem->src_offset) % 4) {
 113             /* XXX need to align buffer */
 114             assert(0);
 115         }
 116     }
 117 }
 118 #endif
 119 /* XXX these shouldn't be asserts since we can work around bad indexbufs */
 120 void setup_index_buffer(struct r300_context *r300,
 121                         struct pipe_buffer* indexBuffer,
 122                         unsigned indexSize)
 123 {
 124     if (!r300->winsys->add_buffer(r300->winsys, indexBuffer,
 125                                   RADEON_GEM_DOMAIN_GTT, 0)) {
 126         assert(0);
 127     }
 128
 129     if (!r300->winsys->validate(r300->winsys)) {
 130         assert(0);
 131     }
 132 }