src/gallium/drivers/nv10/nv10_vbo.c

   1 #include "draw/draw_context.h"
   2 #include "pipe/p_context.h"
   3 #include "pipe/p_state.h"
   4 #include "pipe/p_inlines.h"
   5
   6 #include "nv10_context.h"
   7 #include "nv10_state.h"
   8
   9 #include "nouveau/nouveau_channel.h"
  10 #include "nouveau/nouveau_pushbuf.h"
  11
  12 void nv10_draw_elements( struct pipe_context *pipe,
  13                     struct pipe_buffer *indexBuffer,
  14                     unsigned indexSize,
  15                     unsigned prim, unsigned start, unsigned count)
  16 {
  17         struct nv10_context *nv10 = nv10_context( pipe );
  18         struct draw_context *draw = nv10->draw;
  19         struct pipe_screen *pscreen = pipe->screen;
  20         unsigned i;
  21
  22         nv10_emit_hw_state(nv10);
  23
  24         /*
  25          * Map vertex buffers
  26          */
  27         for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
  28                 if (nv10->vtxbuf[i].buffer) {
  29                         void *buf =
  30                                 pipe_buffer_map(pscreen, nv10->vtxbuf[i].buffer,
  31                                                 PIPE_BUFFER_USAGE_CPU_READ);
  32                         draw_set_mapped_vertex_buffer(draw, i, buf);
  33                 }
  34         }
  35         /* Map index buffer, if present */
  36         if (indexBuffer) {
  37                 void *mapped_indexes
  38                         = pipe_buffer_map(pscreen, indexBuffer,
  39                                           PIPE_BUFFER_USAGE_CPU_READ);
  40                 draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
  41         }
  42         else {
  43                 /* no index/element buffer */
  44                 draw_set_mapped_element_buffer(draw, 0, NULL);
  45         }
  46
  47         draw_set_mapped_constant_buffer(draw,
  48                                         PIPE_SHADER_VERTEX,
  49                                         nv10->constbuf[PIPE_SHADER_VERTEX],
  50                                         nv10->constbuf_nr[PIPE_SHADER_VERTEX]);
  51
  52         /* draw! */
  53         draw_arrays(nv10->draw, prim, start, count);
  54
  55         /*
  56          * unmap vertex/index buffers
  57          */
  58         for (i = 0; i < PIPE_MAX_ATTRIBS; i++) {
  59                 if (nv10->vtxbuf[i].buffer) {
  60                         pipe_buffer_unmap(pscreen, nv10->vtxbuf[i].buffer);
  61                         draw_set_mapped_vertex_buffer(draw, i, NULL);
  62                 }
  63         }
  64         if (indexBuffer) {
  65                 pipe_buffer_unmap(pscreen, indexBuffer);
  66                 draw_set_mapped_element_buffer(draw, 0, NULL);
  67         }
  68 }
  69
  70 void nv10_draw_arrays( struct pipe_context *pipe,
  71                        unsigned prim, unsigned start, unsigned count)
  72 {
  73         nv10_draw_elements(pipe, NULL, 0, prim, start, count);
  74 }
  75
  76
  77