src/gallium/drivers/nv20/nv20_vbo.c

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